SELECTING A WINDOW TREATMENT FABRIC
A fabric selection tool provides an automated procedure for recommending and/or selecting a fabric for a window treatment to be installed in a building. The recommendation may be made to optimize the performance of the window treatment in which the fabric may be installed. The recommended fabric may be selected based on performance metrics associated with each fabric in an environment. The fabrics may be ranked based upon the performance metrics of one or more of the fabrics. One or more of the fabrics, and/or their corresponding ranks, may be displayed to a user for selection. The recommended fabrics may be determined based on combinations of fabrics that provide performance metrics for various façades of the building. Using the ranking system provided by the fabric selection tool, the user may obtain a fabric sample and/or order one or more of the recommended fabrics.
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This application is a continuation of U.S. patent application Ser. No. 16/020,683 (now U.S. Pat. No. ______, which is a continuation of U.S. patent application Ser. No. 14/677,941 (now U.S. Pat. No. 10,032,112), which claims the benefit of U.S. Provisional Application No. 61/973,959, filed Apr. 2, 2014, and U.S. Provisional Application No. 62/002,666, filed on May 23, 2014, the disclosures of each of which are incorporated by reference herein in their entireties.
This application is related to commonly assigned U.S. patent application Ser. No. 14/677,936, filed Apr. 2, 2015, entitled SELECTING A WINDOW TREATMENT FABRIC; commonly assigned U.S. patent application Ser. No. 14/677,937, Apr. 2, 2015, entitled SELECTING A WINDOW TREATMENT FABRIC; and commonly assigned U.S. patent application Ser. No. 14/677,939, Apr. 2, 2015, entitled SELECTING A WINDOW TREATMENT FABRIC, the contents of each are hereby incorporated by reference herein in their entireties.
BACKGROUNDA typical window treatment, such as a roller shade, a drapery, a roman shade, and/or a venetian blind, may be mounted in front of a window or opening to control an amount of light that may enter a user environment and/or to provide privacy. A covering material (e.g., a shade fabric) on the window treatment may be adjusted to control the amount of daylight from entering the user environment and/or to provide privacy. The covering material may be manually controlled and/or automatically controlled using a motorized drive system to provide energy savings and/or increased comfort for occupants. For example, the covering material may be raised to allow light to enter the user environment and allow for reduced use of lighting systems. The covering material may also be lowered to reduce the occurrence of sun glare.
While current window treatments may be adjusted to provide energy savings and/or increased comfort for occupants, the type of fabric or covering material selected for installation with the window treatment is generally given little to no consideration. Instead, fabrics or covering materials are generally selected based solely on visual aesthetics.
SUMMARYAs described herein, a fabric selector tool may be used to assist a user in determining fabrics for automated or manual window treatment that, when implemented in an environment (e.g., building, office, home, etc.), may reduce an amount of power used by a load control system and/or increase the comfort of occupants in the environment. Different types of fabrics may be used with a window treatment. To choose a recommended fabric for implementation in a window treatment, the fabric selector tool may consider fabric characteristics, the environment in which the window treatment may be installed, and/or the performance of various fabrics in the environment in which the window treatment may be installed. The environment, for example, may include a building or a location in the building in which the window treatment may be installed.
A fabric selection wizard module may be implemented for collecting and/or computing input data. The input data may include the characteristics of the environment in which the window treatment may be installed. For example, the environmental characteristics associated with the building or the location in the building in which the recommended fabric may be installed may comprise a location of the building, a latitude of the building, a longitude of the building, an orientation of the building, at least one façade of the building on which the window treatment is to be installed, a buffer zone between a window in the building and an occupant's work space, a window size associated with a window in the building, a glass type associated with a window in the building, a window-to-wall ratio for a room in the building, a visible light transmittance for a window in the building, a daylight glare probability value that indicates an amount of time that daylight glare is probable at a location during a period of time or a maximum probable daylight glare intensity at a location over a period of time, a maximum daylight glare probability value that indicates a maximum threshold for the daylight glare probability value, a room color, depth of room in which the recommended fabric is to be installed, a type of space in the building in which the recommended fabric is to be installed, and/or automated window treatment control information. The fabric selection wizard module may receive some of the environmental characteristics as input data (e.g., from a user interface) and may compute fabric performance input data for determining performance characteristics based on these environmental characteristics. For example, the latitude and longitude of the building may be calculated based on the location of the building, the window-to-wall ratio may be calculated based on the window size, the visible light transmittance for the window may be calculated based on the glass type of the window in the building, and/or the daylight glare probability value or the maximum daylight glare probability value may be calculated based on the type of space in the building in which the recommended fabric is to be installed. The input data may be used to calculate fabric performance metrics at the fabric selection wizard module or another entity, such as a fabric performance engine module, for example. The performance metrics may be predicted based on environmental characteristics of the interior space in which the window treatment may be installed and/or fabric characteristics of the fabric used for the window treatment. The fabric performance metrics may be included in a fabric performance matrix or other output. The fabric performance metrics may indicate the performance of various types of fabric having various characteristics. The fabric performance metrics may be calculated by analyzing the characteristics of a fabric to determine the predicted performance of the fabric in various environments. The fabric characteristics may include an openness factor associated with the fabric that may indicate an amount of open space in the fabric, a visible light transmittance associated with the fabric that may indicate an amount of visible light allowed through the fabric, a solar heat gain associated with a fabric, combined solar heat gain coefficient associate with a combination of the solar heat gain for a glass and a fabric, a color group associated with the fabric, and/or a view clarity rating that may indicate an amount of visibility available through the fabric. The performance metrics for the fabric that may be calculated based on one or more of these characteristics may include the daylight glare probability value that indicates a maximum daylight glare intensity over a period of time, the maximum daylight glare probability value that indicates a predefined maximum threshold for the daylight glare probability, a spatial daylight autonomy value that may indicate an amount of floor space in the building where daylight alone may provide light over a period of time, a spatial daylight autonomy limit value that may indicate the maximum spatial daylight autonomy value for the fabrics with a glare summary score higher than zero, a view rating value that may indicate an amount (e.g., percentage) of the window that may be unobstructed by the fabric, a view limit rating value that may indicate the maximum spatial daylight autonomy value for the fabrics with a glare summary score higher than zero, a view clarity value that may indicate an amount of visibility available through the fabric, a view preservation rating value that may be based on a view rating of the fabric and may indicate an amount of the window that may be unobstructed by the window treatment and a view clarity rating of the fabric that indicates an amount of visibility available through the fabric, a direct glare score that may indicate the reduction in glare based on the fabric, and/or the minimum incident angle of the sun for each façade across the year.
The fabric selection wizard module may receive the predicted fabric performance metrics. The fabric selection wizard module may use the fabric performance metrics to determine a ranking of one or more fabrics for which the performance metrics are received. The ranking may be based on the fabric performance metrics corresponding to the environment in which the window treatment may be installed (e.g., indicated by the input data). The fabrics may be ranked based on a glare score that indicates a predicted amount of glare resulting in a building from use of at least one fabric in the window treatment, a daylight score that indicates a predicted amount of daylight resulting in the interior space from use of the fabric in the window treatment, and/or a view score that indicates an occupant's predicted amount of view out of the at least one window when the window treatment is installed. The fabrics may be ranked based on predefined window treatment recommendation criteria. The fabric selection wizard module may output one or more recommended fabrics and/or their ranking. For example, the fabric selection wizard may display one or more of the top-ranked fabrics.
Predefined window-treatment recommendation criteria may be used to calculate rankings. The predefined window-treatment recommendation criteria may be criteria that affect the amount of energy and/or comfort for an occupant in a load control environment. The predefined window-treatment recommendation criteria may be criteria for window treatments against which the performance of a window treatment may be compared. For example, the predefined window-treatment recommendation criteria may be threshold levels for the predefined predicted performance metrics and/or summary scores. The predefined window treatment recommendation criteria may be system and/or user defined. For example, the system and/or the user may select a threshold value or relative weighting criteria for one or more predefined window-treatment recommendation criteria. The system may use the performance summary scores to determine relative weighting criteria, for example, by computing a weighted average summary score with each performance rating weighted based on either room type or user defined weightings.
The fabric selection wizard module may determine combinations of fabrics that provide the performance metrics for various façades of the building, and use these combinations to rank the fabrics. For example, the environmental characteristics may indicate one or more façades of the building and the fabric performance may be predicted for each façade. Similarly, predicted performance metrics may be calculated for multiple façades. The fabric performance for each façade may be combined to get an overall score for multiple façades of the building. Fabric set scores may be calculated, for example, for different sets of fabrics for multiple facades. The fabric set score may indicate a performance of a set of fabrics when each fabric is used in a window treatment on a different façade of the building. Each fabric in a set of fabrics may have characteristics that are the same of different. For example, the fabrics in a set of fabrics may be of the same family or color group. If the same fabric or fabric family, color group, color and/or openness factor are used for the facades, the scores across the facades may be calculated, for example, when combining multiple facades. A fabric family may comprise a plurality of fabrics with the same material, same texture, or same manufacturer. A color group may comprise a plurality of fabrics with varying shades of a same color or a plurality of fabrics with a combination of colors including at least one color that is the same color. If the same fabric color is used for the facades, an openness factor (e.g., the best openness factor) may be selected by each façade, and the summary scores may be calculated across the facades, for example, when combining multiple facades. After the fabric selection wizard module ranks the plurality of different fabrics and displays one or more of the fabrics, the user may obtain a fabric sample and/or order the fabric.
The recommended fabric may comprises an openness factor that comprises an amount of open space within the fabric material and a visible light transmittance that comprises an amount of visible light allowed to transmit through the fabric material. The openness factor and the visible light transmittance of the fabric material may affect the daylight glare probability that may result from use of the fabric. The openness factor and the visible light transmittance of the recommended fabric may result in a daylight glare probability of less than 35% or 45%. For example, the openness factor and the visible light transmittance of the fabric material may result in a daylight glare probability of less than 35%. As the openness factor may vary from fabric to fabric, the recommended fabric material may comprises an openness tolerance of 1% or less (e.g., 0.5%) for variance of the openness factor. This may be to prevent a fabric having a selected openness factor of 35% or less from raising above 45%.
The recommended fabrics may optimize the automated operation and/or performance of the window treatment (e.g., to increase energy savings and/or improve occupant comfort). While various examples are provided herein for recommending fabrics or other covering materials for a window treatment, the examples are not meant to be limiting.
The foregoing summary, as well as the following detailed description, is better understood when read in conjunction with the appended drawings. The drawings are shown for purposes of illustration and are non-limiting.
The load control system 100 may comprise a load control device, such as a dimmer switch 120, for controlling a lighting load 122. The dimmer switch 120 may be adapted to be wall-mounted in a standard electrical wallbox. The dimmer switch 120 may comprise a tabletop or plug-in load control device. The dimmer switch 120 may comprise a toggle actuator 124 (e.g., a button) and/or an intensity adjustment actuator 126 (e.g., a rocker switch). Successive actuations of the toggle actuator 124 may toggle, e.g., turn off and on, the lighting load 122. Actuations of an upper portion or a lower portion of the intensity adjustment actuator 126 may respectively increase or decrease the amount of power delivered to the lighting load 122 and increase or decrease the intensity of the lighting load from a minimum intensity (e.g., approximately 1%) to a maximum intensity (e.g., approximately 100%). The dimmer switch 120 may further comprise a plurality of visual indicators 128, e.g., light-emitting diodes (LEDs), which may be arranged in a linear array and/or may be illuminated to provide feedback of the intensity of the lighting load 122. Examples of wall-mounted dimmer switches are described in greater detail in U.S. Pat. No. 5,248,919, issued Sep. 28, 1993, entitled LIGHTING CONTROL DEVICE, and U.S. patent application Ser. No. 13/780,514, filed Feb. 28, 2013, entitled WIRELESS LOAD CONTROL DEVICE, the entire disclosures of which are hereby incorporated by reference.
The dimmer switch 120 may be configured to receive digital messages from the system controller 110 via the RF signals 106 and to control the lighting load 122 in response to the received digital messages. Examples of dimmer switches operable to transmit and receive digital messages is described in greater detail in U.S. patent application Ser. No. 12/033,223, filed Feb. 19, 2008, entitled COMMUNICATION PROTOCOL FOR A RADIO-FREQUENCY LOAD CONTROL SYSTEM, the entire disclosure of which is hereby incorporated by reference. The dimmer switch 120 may also, or alternatively, be coupled to the wired digital communication link 104.
The load control system 100 may further comprise one or more remotely-located load control devices, such as light-emitting diode (LED) drivers 130 for driving respective LED light sources 132 (e.g., LED light engines). The LED drivers 130 may be located remotely, for example, in the lighting fixtures of the respective LED light sources 132. The LED drivers 130 may be configured to receive digital messages from the system controller 110 via the digital communication link 104 and to control the respective LED light sources 132 in response to the received digital messages. The LED drivers 130 may be coupled to a separate digital communication link, such as an Ecosystem® or digital addressable lighting interface (DALI) communication link, and the load control system 100 may include a digital lighting controller coupled between the digital communication link 104 and the separate communication link. The LED drivers 132 may include internal RF communication circuits or be coupled to external RF communication circuits (e.g., mounted external to the lighting fixtures, such as to a ceiling) for transmitting and/or receiving the RF signals 106. The load control system 100 may further comprise other types of remotely-located load control devices, such as, for example, electronic dimming ballasts for driving fluorescent lamps.
The load control system 100 may further comprise a plurality of daylight control devices, e.g., motorized window treatments, such as motorized roller shades 140, to control the amount of daylight entering the building in which the load control system may be installed. A motorized roller shades 140 may comprise a covering material (e.g., a shade fabric). The covering material may be wound around a roller tube for raising and/or lowering the shade fabric. The motorized roller shades 140 may comprise electronic drive units 142. The electronic drive units 142 may be located inside the roller tube of the motorized roller shade. The electronic drive units 142 may be coupled to the digital communication link 104 for transmitting and/or receiving digital messages. The electronic drive units 142 may include a control circuit. The control circuit may be configured to adjust the position of a window treatment fabric, for example, in response to digital messages received from the system controller 110 via the digital communication link 104. Each of the electronic drive units 142 may include memory for storing association information for associations with other devices and/or instructions for controlling the motorized roller shade 140. The electronic drive units 142 may comprise an internal RF communication circuit. The electronic drive units 142 may also, or alternatively, be coupled to an external RF communication circuit (e.g., located outside of the roller tube) for transmitting and/or receiving the RF signals 106. The load control system 100 may comprise other types of daylight control devices, such as, for example, a cellular shade, a drapery, a Roman shade, a Venetian blind, a Persian blind, a pleated blind, a tensioned roller shade systems, an electrochromic or smart window, and/or other suitable daylight control device.
The load control system 100 may comprise one or more other types of load control devices, such as, for example, a screw-in luminaire including a dimmer circuit and an incandescent or halogen lamp; a screw-in luminaire including a ballast and a compact fluorescent lamp; a screw-in luminaire including an LED driver and an LED light source; an electronic switch, a controllable circuit breaker, or other switching device for turning an appliance on and off; a plug-in load control device, a controllable electrical receptacle, or a controllable power strip for controlling one or more plug-in loads; a motor control unit for controlling a motor load, such as a ceiling fan or an exhaust fan; a drive unit for controlling a motorized window treatment or a projection screen; motorized interior or exterior shutters; a thermostat for a heating and/or cooling system; a temperature control device for controlling a setpoint temperature of a heating, ventilation, and air conditioning (HVAC) system; an air conditioner; a compressor; an electric baseboard heater controller; a controllable damper; a variable air volume controller; a fresh air intake controller; a ventilation controller; hydraulic valves for use in radiators and radiant heating systems; a humidity control unit; a humidifier; a dehumidifier; a water heater; a boiler controller; a pool pump; a refrigerator; a freezer; a television or computer monitor; a video camera; an audio system or amplifier; an elevator; a power supply; a generator; an electric charger, such as an electric vehicle charger; and/or an alternative energy controller.
The load control system 100 may comprise one or more input devices, e.g., such as a wired keypad device 150, a battery-powered remote control device 152, an occupancy sensor 154, a daylight sensor 156, and/or a shadow sensor 158. The wired keypad device 150 may be configured to transmit digital messages to the system controller 110 via the digital communication link 104 in response to an actuation of one or more buttons of the wired keypad device. The battery-powered remote control device 152, the occupancy sensor 154, the daylight sensor 156, and/or the shadow sensor 158 may be wireless control devices (e.g., RF transmitters) configured to transmit digital messages to the system controller 110 via the RF signals 106 (e.g., directly to the system controller). For example, the battery-powered remote control device 152 may be configured to transmit digital messages to the system controller 110 via the RF signals 106 in response to an actuation of one or more buttons of the battery-powered remote control device 152. The occupancy sensor 154 may be configured to transmit digital messages to the system controller 110 via the RF signals 106 in response to detection of occupancy and/or vacancy conditions in the space in which the load control system 100 may be installed. The daylight sensor 156 may be configured to transmit digital messages to the system controller 110 via the RF signals 106 in response to detection of different amounts of natural light intensity. The shadow sensor 158 may be configured to transmit digital messages to the system controller 110 via the RF signals 106 in response to detection of an exterior light intensity coming from outside the space in which the load control system 100 may be installed. The system controller 110 may be configured to transmit one or more digital messages to the load control devices (e.g., the dimmer switch 120, the LED drivers 130, and/or the motorized roller shades 140) in response to the received digital messages, e.g., from the wired keypad device 150, the battery-powered remote control device 152, the occupancy sensor 154, the daylight sensor 156, and/or the shadow sensor 158. While the system controller 110 may receive digital messages from the input devices and/or transmit digital messages to the load control devices for controlling an electrical load, the input devices may communicate directly with the load control devices for controlling the electrical load.
The load control system 100 may comprise a wireless adapter device 160 that may be coupled to the digital communication link 104. The wireless adapter device 160 may be configured to receive the RF signals 106. The wireless adapter device 160 may be configured to transmit a digital message to the system controller 110 via the digital communication link 104 in response to a digital message received from one of the wireless control devices via the RF signals 106. For example, the wireless adapter device 160 may re-transmit the digital messages received from the wireless control devices on the digital communication link 104.
The occupancy sensor 154 may be configured to detect occupancy and/or vacancy conditions in the space in which the load control system 100 may be installed. The occupancy sensor 154 may transmit digital messages to the system controller 110 via the RF signals 106 in response to detecting the occupancy and/or vacancy conditions. The system controller 110 may be configured to turn one or more of the lighting load 122 and/or the LED light sources 132 on and off in response to receiving an occupied command and a vacant command, respectively. The occupancy sensor 154 may operate as a vacancy sensor, such that the lighting loads are turned off in response to detecting a vacancy condition (e.g., not turned on in response to detecting an occupancy condition). Examples of RF load control systems having occupancy and vacancy sensors are described in greater detail in commonly-assigned U.S. Pat. No. 8,009,042, issued Aug. 30, 2011, entitled RADIO-FREQUENCY LIGHTING CONTROL SYSTEM WITH OCCUPANCY SENSING; U.S. Pat. No. 8,199,010, issued Jun. 12, 2012, entitled METHOD AND APPARATUS FOR CONFIGURING A WIRELESS SENSOR; and U.S. Pat. No. 8,228,184, issued Jul. 24, 2012, entitled BATTERY-POWERED OCCUPANCY SENSOR, the entire disclosures of which are hereby incorporated by reference.
The daylight sensor 156 may be configured to measure a total light intensity in the space in which the load control system is installed. The daylight sensor 156 may transmit digital messages including the measured light intensity to the system controller 110 via the RF signals 106. The digital messages may be used to control an electrical load (e.g., the intensity of lighting load 122, the motorized window shades 140 for controlling the level of the covering material, the intensity of the LED light sources 132) via one or more control load control devices (e.g., the dimmer switch 120, the electronic drive unit 142, the LED driver 130). Examples of RF load control systems having daylight sensors are described in greater detail in commonly-assigned U.S. Pat. No. 8,410,706, issued Apr. 2, 2013, entitled METHOD OF CALIBRATING A DAYLIGHT SENSOR; and U.S. Pat. No. 8,451,116, issued May 28, 2013, entitled WIRELESS BATTERY-POWERED DAYLIGHT SENSOR, the entire disclosures of which are hereby incorporated by reference.
The shadow sensor 158 may be configured to measure an exterior light intensity coming from outside the space in which the load control system 100 may be installed. The shadow sensor 158 may be mounted on a façade of a building, such as the exterior or interior of a window, to measure the exterior natural light intensity depending upon the location of the sun in sky. The shadow sensor 158 may detect when direct sunlight is directly shining into the shadow sensor 158, is reflected onto the shadow sensor 158, or is blocked by external means, such as clouds or a building, and may send digital messages indicating the measured light intensity. The shadow sensor 158 may transmit digital messages including the measured light intensity to the system controller 110 via the RF signals 106. The digital messages may be used to control an electrical load (e.g., the intensity of lighting load 122, the motorized window shades 140 for controlling the level of the covering material, and/or the intensity of the LED light sources 132) via one or more control load control devices (e.g., the dimmer switch 120, the electronic drive unit 142, and/or the LED driver 130). The shadow sensor 158 may also be referred to as a window sensor, a cloudy-day sensor, or a sun sensor.
The load control system 100 may comprise other types of input device, such as: temperature sensors; humidity sensors; radiometers; pressure sensors; smoke detectors; carbon monoxide detectors; air quality sensors; motion sensors; security sensors; proximity sensors; fixture sensors; partition sensors; keypads; kinetic- or solar-powered remote controls; key fobs; cell phones; smart phones; tablets; personal digital assistants; personal computers; laptops; timeclocks; audio-visual controls; safety devices; power monitoring devices (such as power meters, energy meters, utility submeters, utility rate meters); central control transmitters; residential, commercial, or industrial controllers; or any combination of these input devices. These input devices may transmit digital messages to the system controller 110 via the RF signals 106. The digital messages may be used to control an electrical load (e.g., the intensity of lighting load 122, the motorized window shades 140 for controlling the level of the covering material, and/or the intensity of the LED light sources 132) via one or more control load control devices (e.g., the dimmer switch 120, the electronic drive unit 142, and/or the LED driver 130).
The system controller 110 may be configured to control the load control devices (e.g., the dimmer switch 120, the LED drivers 130, and/or the motorized roller shades 140) according to a timeclock schedule. The timeclock schedule may be stored in a memory in the system controller. The timeclock schedule may include a number of timeclock events. The timeclock events may have an event time and a corresponding command or preset. The system controller 110 may be configured to keep track of the present time and/or day. The system controller 110 may transmit the appropriate command or preset at the respective event time of each timeclock event. An example of a load control system for controlling one or more motorized window treatments according to a timeclock schedule is described in greater detail in commonly-assigned U.S. Pat. No. 8,288,981, issued Oct. 16, 2012, entitled METHOD OF AUTOMATICALLY CONTROLLING A MOTORIZED WINDOW TREATMENT WHILE MINIMIZING OCCUPANT DISTRACTIONS, the entire disclosure of which is hereby incorporated by reference.
The load control system 100 may be part of an automated window treatment control system. The system controller 110 may control the shades according to automated window treatment control information. For example, the automated window treatment control information may include the angle of the sun, sensor information, an amount of cloud cover, and/or weather data, such as historical weather data and real-time weather data. For example, throughout course of calendar day, the system controller 110 of the automated window treatment control system may adjust the position of the window treatment fabric multiple times, based on the calculated position of the sun or sensor information. For example, the system controller 110 of the automated window treatment control system may adjust the positions of the window treatments in response to at least one light intensity measured by a sensor. The automated window treatment control system may determine the position of the window treatments in order to affect a performance metric. The automated window treatment system may command the system controller 110 to adjust the window treatments to the determined position in order to affect a performance metric. For example, the system controller 110 of the automated window treatment control system may adjust the positions of the window treatments at intervals to minimize occupant distractions. The automated window treatment control system may operate according to a timeclock schedule. Based on the timeclock schedule, the system controller 110 may change the position of the window treatments throughout a calendar day. For example, the automated window treatment control system may determine a position of a window treatment based on a calculated angle of the sun to limit a sunlight penetration distance in an interior space of a building and indicate to the system controller 110 to adjust the window treatment to the determined position. The timeclock schedule may be set to prevent the daylight penetration distance from exceeding a maximum distance into an interior space (e.g., work space, transitional space, or social space). The maximum daylight penetration distance may be set to a buffer zone, which may be a distance between the window and the users workspace. The system controller 110 may adjust the position of the window treatments according to collected sensor information.
The system controller 110 may be operable to be coupled to a network, such as a wireless or wired local area network (LAN) via a network communication bus 162 (e.g., an Ethernet communication link), e.g., for access to the Internet. The system controller 110 may be connected to a network switch 164 (e.g., a router or Ethernet switch) via the network communication bus 162 for allowing the system controller 110 to communicate with other system controllers for controlling other electrical loads. The system controller 110 may be wirelessly connected to the network, e.g., using Wi-Fi technology. The system controller 110 may be configured to communicate via the network with one or more network devices, such as a smart phone (e.g., an iPhone® smart phone, an Android® smart phone, a Windows® smart phone, or a Blackberry® smart phone), a personal computer 166, a laptop, a tablet device, (e.g., an iPad® hand-held computing device), a Wi-Fi or wireless-communication-capable television, a server, and/or any other suitable wireless communication device (e.g., an Internet-Protocol-enabled device). The network device may be operable to transmit digital messages to the system controller 110 in one or more Internet Protocol packets. Examples of load control systems operable to communicate with network devices on a network are described in greater detail in commonly-assigned U.S. Patent Application Publication No. 2013/0030589, published Jan. 31, 2013, entitled LOAD CONTROL DEVICE HAVING INTERNET CONNECTIVITY, the entire disclosure of which is hereby incorporated by reference.
The operation of the load control system 100 may be programmed and/or configured using the personal computer 166 or other network device. The personal computer 166 may execute a graphical user interface (GUI) configuration software for allowing a user to program how the load control system 100 may operate. The configuration software may generate load control information (e.g., a load control database) that defines the operation and/or performance of the load control system 100. For example, the load control information may include information regarding the different load control devices of the load control system (e.g., the dimmer switch 120, the LED drivers 130, and/or the motorized roller shades 140). The load control information may include information regarding associations between the load control devices and the input devices (e.g., the wired keypad device 150, the battery-powered remote control device 152, the occupancy sensor 154, the daylight sensor 156, and/or the shadow sensor 158), and/or how the load control devices may respond to input received from the input devices. Examples of configuration procedures for load control systems are described in greater detail in commonly-assigned U.S. Pat. No. 7,391,297, issued Jun. 24, 2008, entitled HANDHELD PROGRAMMER FOR LIGHTING CONTROL SYSTEM; U.S. Patent Application Publication No. 2008/0092075, published Apr. 17, 2008, entitled METHOD OF BUILDING A DATABASE OF A LIGHTING CONTROL SYSTEM; and U.S. patent application Ser. No. 13/830,237, filed Mar. 14, 2013, entitled COMMISSIONING LOAD CONTROL SYSTEMS, the entire disclosure of which is hereby incorporated by reference.
The system controller 110 may be configured to automatically control the motorized window treatments (e.g., the motorized roller shades 140). The motorized window treatments may be controlled to save energy and/or improve the comfort of the occupants of the building in which the load control system 100 may be installed. For example, the system controller 110 may be configured to automatically control the motorized roller shades 140 in response to a timeclock schedule, the daylight sensor 156, and/or the shadow sensor 158. The roller shades 140 may be manually controlled by the wired keypad device 150 and/or the battery-powered remote control device 152.
The covering material or fabric of the window treatments may be characterized by an openness factor, a visible light transmittance (TV-FABRIC), a solar absorptance (AS), a solar transmittance (TS), a solar reflectance (RS), a solar heat gain coefficient (SHGCS), and/or combined solar heat gain coefficient (SHGCFABRIC-GLASS).
The openness factor and/or the visible light transmittance of the fabric TV-FABRIC may affect the energy savings of the load control system and/or the comfort of the occupants. For example, a fabric 200 having a higher openness factor may allow more of the natural light 212 to pass through. This higher openness factor may provide more energy savings for the load control system 100 since the lighting loads may be dimmed or turned off. A high visible light transmittance of the fabric TV-FABRIC may lead to conditions of high daylight glare.
The fabric of the window treatments of the load control system 100 may be selected using a fabric selection software. This selection may be performed prior to purchase and/or installation of the load control system, for example.
The fabric selection tool 300 may comprise a fabric selection wizard module 310. The fabric selection wizard module 310 may obtain data as input to a fabric performance engine 316. The fabric performance engine 316 may determine the performance of different covering materials and/or fabrics based on the basic input data 312 and/or the fabric performance input data 314. The fabric performance engine 316 may output a fabric performance output 320 (e.g., a fabric performance output matrix). The fabric performance output 320 may indicate predicted performance metrics of the fabrics in various load control environments (e.g., a building, an office, a home, etc.). The fabric selection wizard module 310 may analyze the predicted performance metrics from the fabric performance output 320 and may provide recommendations for fabrics that may provide energy savings and/or comfort to occupants (e.g., by reducing the possibility of glare from natural light) as compared to other fabrics.
The fabric selection wizard module 310 may comprise software and/or hardware. For example, the fabric selection wizard module 310 may comprise a user interface (e.g., a web-based or local graphical user interface (GUI)) that may receive information from a user of a network device. The fabric selection wizard module 310 may obtain data from other sources, such as a local or remote memory storage, input devices in the load control system, load control devices in the load control system, and/or other remote sources. The fabric selection wizard module 310 may reside locally on a network device and/or on one or more remote devices that may be accessed by the network device (e.g., the system controller 110). The functionality of the fabric selection wizard module 310 may reside on a single device or be distributed across multiple devices. For example, the fabric selection wizard module 310 may be accessed via a web browser running on the network device and displayed on a visual display of the network device. The network device may be a personal computer, a laptop, a tablet, a smart phone, and/or other suitable network device having a visual display or capable of communicating with a visual display.
The fabric performance engine 316 may comprise software and/or hardware for calculating the performance of covering materials and/or fabrics. The fabric performance engine 316 may receive input data from the fabric selection wizard module 310. The fabric performance engine 316 may obtain data from other sources, such as a local or remote memory storage, input devices in the load control system, load control devices in the load control system, and/or other remote sources. The fabric performance engine 316 may reside locally on a network device and/or on one or more remote devices (e.g., the system controller 110). The device or devices on which the fabric performance engine 316 resides may be the same as or different from the device or devices on which the fabric selection wizard module 310 may reside.
The fabric selection wizard module 310 may collect basic input data 312. The basic input data 312 may comprise information regarding a building in which window treatments may be installed. The basic input data 312 may comprise environmental characteristics associated with the building or a location in the building in which the window treatments may be installed. For example, the basic input data 312 may comprise information identifying a location of the building, an orientation of the building, a façade or façades of the building on the inside of which the window treatments may be located, buffer zones between windows and occupants' work spaces (e.g., desk, computer screen, etc.), a size and/or tint of the windows that the window treatments may be covering, a glass type of the windows, a space type (e.g., functional area, transition area, social area, etc.), a room color, depth of room in which the recommended fabric is to be installed, whether a façade is protected from direct sun (e.g., due to a building or other structure), and/or automated window treatment control information. The basic input data 312 may be manually entered by a user and/or received from another source, such as a remote computing device. Basic input data 312 may be received for one or more façades.
The fabric selection wizard module 310 may compute fabric performance input data 314 that may be used by the fabric performance engine 316 to determine the performance of fabrics. The computed fabric performance input data 314 may be computed based on the basic input data 312 and/or other input data that may be received from a user or from one or more remote external devices (e.g., network devices, remote computing devices, input devices, load control devices, etc.). As the computed fabric performance input data 314 may be computed based on the basic input data 312, the computed fabric performance input data 314 may comprise environmental characteristics associated with the building or the location in the building in which the window treatments may be installed. The computed fabric performance input data 314 may comprise, for example, a latitude and/or a longitude of the building, an amount of time the building receives daylight (e.g., a number of sunny hours per day, month, or year for the building), a window-to-wall ratio (WWR), a visible light transmittance of the glass of the windows (TV-GLASS), a daylight glare probability value, a maximum daylight glare probability value, an orientation that indicates a building façade (e.g., northern façade), and/or a fabric part number that indicates a unique number associated with the fabric.
The fabric performance wizard module 310 may receive predicted performance metric values, summary scores, information based on the summary scores, information based on the predicted performance metric values, basic input data 312, input data, computed fabric performance input data 314, output data, and/or output fabric performance data. The fabric performance wizard module 310 may calculate scores based on predicted performance metric values, information based on the predicted performance metric values, basic input data 312, input data, computed fabric performance input data 314, output data, and/or output fabric performance data. The fabric performance wizard module 310 may display predicted performance metric values, summary scores, information based on the summary scores, information based on the predicted performance metric values, basic input data 312, input data, computed fabric performance input data 314, output data, and/or output fabric performance data.
The window-to-wall ratio (WWR) indicates the area of a perimeter wall that is occupied by glass in a window. A larger window size may allow a greater daylight intensity into the room and may cause the shades to be closed more often. For example, the window-to-wall ratio may indicate a ratio (e.g., percentage) of the area of the glass in a window that occupies the space in the perimeter wall to the remaining area of the perimeter wall. The areas may be based on the height and width of the window and perimeter wall.
The daylight glare probability value may indicate the predicted amount of daylight glare or a predicted maximum daylight glare intensity over a period of time (e.g., total hours of predicted daylight glare or maximum daylight glare intensity at a location in a year). The maximum daylight glare probability value may indicate a maximum threshold for the daylight glare probability value. The daylight glare probability value and the maximum daylight glare probability value may be indicated as a percentage or ratio of a maximum daylight glare intensity. The maximum daylight glare probability value may be equal to or compared against industry standards for daylight glare probability. For example, the maximum daylight glare probability value may be set to a 35% maximum intensity, which may be the level at which an occupant may begin to recognize glare, or 45%, which may be the level at which an occupant may begin to be bothered by glare.
If one or more types of the computed fabric performance input data 314 and/or the basic input data 312 are not provided, the fabric selection wizard module 310 may provide a default value. For example, if the visible light transmittance of the glass of the windows TV-GLASS and/or the glass type is not provided in the basic input data 312, the fabric selection wizard 310 may provide a default visible light transmittance of the glass and/or glass type, respectively.
The daylight glare probability value and the maximum daylight glare probability value may be compared to control the daylight glare probability or to determine if the daylight glare probability has exceeded a predefined maximum threshold. The daylight glare probability value may be affected by location characteristics. For example, the daylight glare probability value may be determined based on a total number of hours of annual sunshine at a climate zone at a given location or latitude. While the daylight glare probability value may be indicated herein as a ratio or percentage of the maximum daylight glare intensity, the daylight glare probability value may also be indicated as a total number of hours of daylight glare or the total number of hours of daylight glare over a predefined value. The maximum daylight glare probability value may indicate a predefined maximum threshold for the amount of hours of daylight glare (e.g., where the daylight glare probability value indicates a total amount of hours of sunshine) or a maximum threshold for daylight glare intensity (e.g., where the daylight glare probability value indicates a total amount of hours of sunshine). While the maximum daylight glare probability value may be indicated herein as a ratio or percentage, the maximum daylight glare probability value may also be indicated as a maximum threshold number of hours of daylight glare or the maximum total number of hours of daylight glare over a predefined value. The maximum daylight glare probability value may change based on space type, location, etc.
The computed fabric performance input data 314 may be determined as a function of the basic input data 312. For example, the latitude and/or longitude may be determined as a function of the location indicated in the basic input data 312. The latitude and longitude may be output from a location map function or a lookup function that receives the location as input. The lookup function may be used to lookup a location in a lookup table and provide the latitude and longitude or provide the latitude and longitude of the closest location in the lookup table to the entered location. Equations 1 and 2 provide example lookup functions for looking up a latitude and a longitude, respectively, based on a location.
LAT=Lookup(Location) Equation 1:
LON=Lookup(Location) Equation 2:
The location map function may provide the latitude and longitude of a location on a map from a lookup table or otherwise determine the latitude and longitude of the location on a map based on the latitude and longitude of the closest locations in the lookup table (e.g., using triangulation). Equations 3 and 4 provide example location map functions for determining a latitude and a longitude, respectively, based on a location.
LAT=Location_map(Location) Equation 3:
LON=Location_map(Location) Equation 4:
The window-to-wall ratio may be determined as a function of the window size (e.g., height and width) in the basic input data 312. For example, the window-to-wall ratio may be output from a lookup function that receives the window size as input. Equation 5 provides an example lookup function for determining a window-to-wall ratio based on the window size.
WWR=Lookup(WindowSize) Equation 5:
The visible light transmittance of the glass of the windows TV-GLASS may be determined as a function of the glass type in the basic input data 312. For example, the visible light transmittance of the glass of the windows TV-GLASS may be output from a lookup function that receives the glass type as input. Equation 6 provides an example lookup function for determining the visible light transmittance of the glass of the windows TV-GLASS based on the glass type.
TV-GLASS=Lookup(GlassType) Equation 6:
The daylight glare probability value and/or the maximum daylight glare probability value may be determined as a function of the space type in the basic input data 312. For example, the daylight glare probability value and/or the maximum daylight glare probability value may be output from a lookup function that receives the space type as input. Equations 7 and 8 provide example lookup functions for determining the maximum daylight glare probability value and the daylight glare probability value, respectively, based on the space type.
MaxDGPValue=Lookup(SpaceType) Equation 7:
DGPValue=Lookup(SpaceType) Equation 8:
The amount of time the building receives daylight may be calculated based on the location in the basic input data 312, such as the latitude and longitude of the location. For example, the amount of time the building receives daylight may be output from a lookup function that receives the location or latitude and longitude as input. Equation 9 provides an example lookup function for determining the number of hours the building receives daylight based on the location.
SunnyHours=Lookup(Location) Equation 9:
The amount of time the building receives daylight may also be calculated based on a weighted average of multiple other locations within proximity to a given location. For example, the distance between a building and multiple other locations may be determined. The amount of time the building receives daylight may be weighted, for example, according to the distance from each location and the amount of daylight received at each location (e.g., weighted average of daylight received at three closest cities).
The orientation of a façade may be determined based on the facade and the building rotation to determine the direction the façade is oriented. Each orientation of the building (e.g., north, south, east, west, northeast, northwest, southeast, southwest, etc.) may be assigned a value. The building orientation may be selected by the user.
The location information 402 may identify a latitude 416 and longitude 418 at various locations and/or the amount of daylight 420 received at each location. The façade orientation information 404 may identify the selectable façades of a building 422 and/or an orientation for each façade 424. The buffer zone information 406 may identify the types of buffer zones for workspaces in the building and/or the distance of a workspace from the window. The window size information may identify window types 426 and/or a window-to-wall ratio 428 for the window types 426. The glass type information 410 may identify the selectable types of glass 430 and/or the visible light transmittance TV-GLASS 432 of the types of glass. The types of glass 430 may identify a number of panes in the glass and/or an amount of tint in the glass. The space type information 412 may identify a selectable type of space 434, a maximum daylight glare probability value 436 for the selectable types of space 434, and/or a daylight glare probability value 438 for the selectable types of space 434. The room color information 414 may identify selectable shades of room colors or the actual room colors themselves.
The input table 400 may be used to determine the computed fabric performance input data 314 based on the basic input data 312. While
Referring back to
The color group of the fabric may indicate a solid color, a combination of multiple colors (e.g., a striped pattern), or a design (e.g., an image). The color groups may be within the same family of colors, combination of colors, and/or design. For example, the beige shades may be in one group and the grey shades may be in another. In another example, vertical striped shades may be in a different group than horizontal striped shades.
The view clarity rating may indicate an amount (e.g., percentage) of visibility available through the fabric. The view clarity rating may be based on one or more other types of information in the fabric data 318. For example, the view clarity rating may be based on the openness factor, the difference between the visible light transmittance of the fabric TV-FABRIC and the openness factor, and/or the color group. A greater view clarity rating may result from a higher openness factor, darker color group, and/or a lower difference between the visible light transmittance of the fabric TV-FABRIC and the openness factor.
The identifier may indicate the family name of which the identified fabric is a part, the color group, the openness factor, and/or the view clarity rating. The visible light transmittance of the fabric TV-FABRIC may be a function of the color group and/or the openness factor. The fabric data 318 may include multiple fabrics that have the same color group different openness factors and/or transmittances, such that the potential energy savings and/or daylight glare probability of each of the fabrics may differ. Each of these fabrics may be used for different façades in a building to keep the same shade colors, patterns, and/or designs in a room or floor of a building, while also allowing a fabric having different characteristics other than color to optimize comfort to an occupant and/or energy usage.
Using the basic input data 312, computed fabric performance input data 314, and/or the fabric data 318, the fabric performance engine 316 may generate performance metrics regarding the predicted performance of the window treatments and/or shades that may be installed in the building. The performance metrics may be included in the fabric performance output 320. The fabric performance output 320 may comprise a fabric output matrix. The fabric output matrix that may include one or more fabrics and the corresponding performance for each fabric. For example, the performances metrics of the fabric performance output 320 may include a daylight glare probability value, a maximum daylight glare probability value, a spatial daylight autonomy value, a view clarity rating (e.g., from the fabric data 318), and/or a view rating for each fabric.
The spatial daylight autonomy value may indicate an amount (e.g., percentage) of floor space where daylight alone may provide light over a period of time. For example, the spatial daylight autonomy value may indicate a percentage of floor space where daylight alone provides 300 lux or more for at least half of the work hours in a year. The spatial daylight autonomy value may be affected by the openness factor and/or the visible light transmittance TV-FABRIC. A higher openness factor and/or visible light transmittance TV-FABRIC may increase the spatial daylight autonomy value.
The daylight glare probability value may be affected by the openness factor and/or the visible light transmittance TV-FABRIC. A higher openness factor and/or visible light transmittance TV-FABRIC may increase the daylight glare probability value. The fabric color may affect the daylight glare probability value and/or the spatial daylight autonomy value. A lighter color fabric may increase the daylight glare probability value and/or the spatial daylight autonomy value.
The view rating may indicate an amount (e.g., percentage) of a window that may be unobstructed by window treatment material. For example, the view rating may indicate a window shade level (e.g., amount of window that is covered or not covered by the window shade). The view rating may be determined based on the basic input data 312 and/or the computed fabric performance input data 314. For example, the view rating may be higher for a location that receives less daylight or daylight glare and is able to keep the shades open at a higher level for a greater amount of time giving an occupant a greater view.
The view rating may be determined based on the control type. The control type may be a manual or automated control type. The level of the shades may be determined from the predicted automated control and/or manual control of the shades.
The view rating may be based on the view clarity rating. For example, the fabrics that have a greater view clarity rating may have a lower view rating. This may be because the shades with a greater view rating may have a greater openness factor, visible light transmittance TV-FABRIC, and/or a lighter color group, which may cause the shades to be lowered due to the amount of daylight that may be allowed in the space. The lower view rating may indicate the shades may be at a lower level to limit glare, thus obstructing the view. The fabrics at a façade angle and/or a building orientation that receive more daylight and/or a greater maximum daylight intensity level may be given a lower view rating, for example, because of the amount of light that may be allowed into the space.
The fabrics that may be used in a space that has a shorter buffer zone, and/or a lower window-to-wall ratio, may be given a higher view rating as the occupant may have a larger view when closer to a bigger window. These fabrics, however, may receive a lower view rating, or such view ratings may be mitigated, when the shades are lowered due to an increased amount of daylight. For example, a larger window size may allow a greater daylight intensity in the room and may cause the shades to be closed more often. When the glass type and/or the visible light transmittance of the glass TV-GLASS allows more visible light through, the fabrics may receive a higher view rating as a better view may be perceived through the glass. These fabrics, however, may receive lower view ratings, or such view ratings may be mitigated, when the shades are lowered due to the increased amount of daylight.
The performances metrics of the fabric performance output 320 may be generated for automated and/or manual control for each fabric. The performance metrics may be different for automated control of the fabric than for manual control. The performance metrics for manual shade control may be generated based on an assumption that the shades are kept in a single state during use. The shade state may be a fully-closed state or a position between the fully-closed state and a fully-opened state (e.g., partially-open, state). The performance metrics for manual shade control may be generated based on a predicted manual usage of the shades by an occupant. The predicted manual usage may be based on input data (e.g., basic input data 312 and/or computed fabric performance input data 314) and/or other data that indicates various thresholds at which an occupant may move their shades. For example, in a location and/or orientation that has a higher daylight glare probability value, occupants may close the shades to prevent glare more often than occupants at locations with a lower daylight glare probability value. The performance metrics for automated shade control may be generated based on a predicted automated control of the shades. Examples of methods for automated shade control on which the automated control of the shades may be predicted are described in greater detail in commonly-assigned U.S. Pat. No. 8,288,981, issued Oct. 16, 2012, entitled METHOD OF AUTOMATICALLY CONTROLLING A MOTORIZED WINDOW TREATMENT WHILE MINIMIZING OCCUPANT DISTRACTIONS, the entire disclosure of which is hereby incorporated by reference.
The fabric performance engine 316 may provide the performance metrics regarding the predicted performance of the window treatments back to the fabric selection wizard module 310. The fabric selection wizard module 310 may establish (e.g., receive) the performance metrics regarding the predicted performance of the window treatments for each of the plurality of different fabrics of the fabric data 318. The fabric selection wizard module 310 may receive the fabric performance output 320 and may analyze the data from the fabric performance output 320 to provide recommendations of one or more fabrics that may provide energy savings and/or maximize the comfort of occupants (e.g., by reducing the possibility of daylight glare). For example, the fabric selection wizard module 310 may rank fabrics having a low daylight glare probability value, a high spatial daylight autonomy value, and/or a high view rating above other fabrics. The fabric selection wizard module 310 may be configured to display the recommendations on a user interface to be viewed by a user.
As shown in
Referring to
In the site info input section 520, the user may select the location 522 and/or the façade orientation 524. The location may be indicated by the country, state, city, and/or zip code of the building in which the window treatments may be installed. The façade orientation 524 may be entered for one or more façades of the building. The user may select the orientations from a set of pre-determined orientations that may be provided (e.g., from north, south, east, west, northeast, northwest, southeast, southwest). Each of the orientations may be associated with a façade angle (e.g., north is 0°, south is 180°, etc.). The user may also, or alternatively, be able to enter the specific orientation angle for each façade.
A location window 526 may be displayed in the fabric selection input screen 500 to illustrate the site location. The location window 526 may be displayed next to the site info input section 520 as shown in
As shown in
The user may provide additional façades of the building for being characterized using the façade addition function 521. The user may add any number of façades of the building that shades may be installed. For example, the user may add the number of façades to match the number of façades of the building.
As shown in
The fabric selection wizard module 310 may use the selected space type 532 to determine a maximum daylight glare probability value and/or the daylight glare probability value. For example, the fabric selection wizard module 310 may set the maximum daylight glare probability value to 40% for a transitional area, to 35% for a functional area, and/or to 40% for a social area.
The room colors 534 may indicate the shade of the room colors, such as light, medium, and/or dark. The room colors 534 may also, or alternatively, include the room colors themselves, such as red, yellow, green, and/or the like.
The occupant's distance from a window 536 may indicate the distance of the occupant's work space from the window. The occupant's distance from a window 536 may be entered specifically or based on one or more predefined distances. The predefined distances may be identified by the distance type between the occupant and the window. For example, the user may select the occupant's distance from the window from the options: atrium, no aisle, small aisle, and/or large aisle. The fabric selection wizard module 310 may use the selected occupant's distance from the window to determine a buffer zone distance for the building, one or more façades of the building, or one or more rooms of the building. As an example, the buffer zone distance may be two feet for no aisle, five feet for small aisle, and/or eight feet for large aisle. Other predefined buffer zone distances may also be implemented.
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Referring to
The window size 552 may be indicated by a number of predefined window sizes. The window size 552 may be input specifically. The predefined window sizes may approximate the window size 552. The window size 552 may be based on how much of a wall may be occupied by the window, such as a curtain wall window, a mostly glass wall (e.g., greater than half), a half glass wall, a wall that has some glass (e.g., less than half), and/or the like. The actual window size may also, or alternatively, be entered. For example, a user may enter the window-to-wall ratio, the size of the window, the number of windows in the building, and/or the size of a façade that includes the windows. The window-to-wall ratio may be determined (e.g., at the fabric selection wizard module 310) based on the size of a window, the number of windows, and the size of the façade.
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The glass type 554 may include a number of panes 556 in a window in the façade, a tint of the glass 558, and/or a visible transmittance of the glass TV-GLASS 560. The tint of the glass 558 may be indicated by predefined levels, such as clear, medium tint, dark tint, etc. The tint of the glass 558 may be indicated more specifically, such as by using a percentage of tint. The visible light transmittance of the glass TV-GLASS 560 may indicate an amount of visible light transmittance that may be allowed through the glass. The visible light transmittance of the glass TV-GLASS 560 may be based on the number of panes in the window 556. The visible light transmittance of the glass TV-GLASS 560 may be based on the amount of tint of the glass 558. The visible light transmittance of the glass TV-GLASS 560 may be indicated as a specific amount (e.g., percentage) or in predefined levels.
The fabric selection wizard module 310 may use the selected glass type 554 for the windows to determine the visible light transmittance of the glass TV-GLASS 560. For example, the fabric selection wizard module 310 may use the number of panes in a window in the façade 556 and/or a tint of the glass 558 to determine the visible light transmittance of the glass TV-GLASS 560. The fabric selection wizard module 310 may use the number of panes in a window in the façade 556, the tint of the glass 558, and/or the visible light transmittance of the glass TV_GLASS 560 to determine the visible light transmittance of the fabric TV-FABRIC for the window treatments that may be installed in the building, one or more façades of the building, or one or more rooms of the building.
The user may indicate one or more types of certifications of which shade fabrics of interest may be classified in the shade certifications input section 570. The fabric selection wizard module 310 may use the input from the shade certifications input section 570 to filter out shades without the indicated certifications for recommendation. The shade certifications in the shade certifications input section 570 may include a polyvinyl chloride (PVC)-free certification, a lead-free certification, an anti-microbial/anti-fungal certification, a restriction of hazardous substance (RoHS) certification, an Oeko-Tex Standard 100 certification, a Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) certification, a cradle-to-cradle silver certification, a recyclable material certification, and/or a recycled content certification (e.g., indicating fabric is made of recycled content). The shade certifications may include fire ratings, such as the national fire protection association (NFPA) 701 certification, the California U.S. Title 19 certification, an M1 certification, and/or a B1 certification. The shade certifications may include Greenguard certifications, such as the Greenguard certification, the Greenguard Gold certification, and/or the Greenguard Children and Schools certification.
The user may actuate the recommended fabrics button 580 to enter the data on the fabric selection input screen 500 as basic input data 312 into the fabric selection wizard module 310 and/or the fabric performance engine 316. If one or more of the sections in the fabric selection input screen 500 are missing input data, the fabric selection input screen 500 may indicate that data is missing. The fabric selection wizard module 310 and/or the fabric performance engine 316 may determine fabric selection recommendations when data is missing by using default values for missing data or by using a zero or null value for the missing data that may not be considered by the fabric selection wizard module 310 and/or the fabric performance engine 316.
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The fabric selection wizard module 310 may also allow a user to save recommended or preferred fabrics and/or download or print fabric reports (e.g., fabrics specifications, summaries of recommended or preferred fabrics, technical reports for submittal documents, etc.). The user may take one or more of the reports to a window treatment dealer to order the window treatments having the desired fabric. The fabric selection wizard module 310 may provide a screen for ordering window treatments having one of the recommended fabric combinations.
The computed fabric performance input data 314 may be used for determining fabric performance data at 614. The fabric performance engine 316 may receive the computed fabric performance input data 314. The fabric performance engine 316 may use the computed fabric performance input data 314 to calculate the fabric performance output 320. For example, the fabric performance engine 316 may analyze one or more fabrics in the fabric data 318 according to the computed fabric performance input data 314 to generate the fabric performance output 320. The calculated fabric performance output 320 may include the daylight glare probability value, the maximum daylight glare probability value, the spatial daylight autonomy value, and/or the view rating. The fabric performance output 320 of each fabric may be calculated as a function of the computed fabric performance input data 314 and/or the fabric data 318 (e.g., the fabric openness factor (OF), the visible light transmittance of the fabric TV-FABRIC, the fabric color group, the control type, etc.). Example functions for calculating variables in the fabric performance output 320 are indicated in Equations 10 to 13 below.
DGPValue(FabricID)=f(Input;OF;TV-FABRIC;ColorGroup;ControlType) Equation 10:
sDA(FabricID)=f(Input;OF;TV-FABRIC;ColorGroup;ControlType) Equation 11:
MaxDGPValue(FabricID)=f(Input) Equation 12:
ViewRating(FabricID)=f(Input;ControlType) Equation 13:
The view rating may provide the average height that bottom of shade may be above the floor (e.g., in inches). For example, if a view rating value is 74, then on average, bottom of the fabric of the window treatment is 74 inches above floor. The view rating may also be quantified as the average percent of window unobstructed by a window treatment across a year. The average percent may be calculated by taking the daily average of window unobstructed by a window treatment during daylight hours for each day in a calendar year.
As illustrated in Equations 10 to 13, the calculated fabric performance output 320 for a given fabric may include the daylight glare probability value (e.g., as shown in Equation 10), a spatial daylight autonomy value (e.g., as shown in Equation 11), a maximum daylight glare probability value (e.g., as shown in Equation 12), a view rating (e.g., as shown in Equation 13), and/or a view clarity rating value. The fabric performance output 320 for a given fabric may be affected by input data (e.g., the basic input data 612 and/or the computed fabric performance input data 314), the fabric data 318 (e.g., openness factor, TV-FABRIC, and/or color group), and/or the type of control that may be used for controlling the window treatment (e.g., automated or manual control). The functions illustrated in Equations 10 to 13 may determine the respective values for a given fabric, which may be input as a fabric identifier, for example.
As illustrated in Equations 10 and 11, the resulting daylight glare probability value and/or the spatial daylight autonomy value of a fabric may be affected by the basic input data 612, the computed fabric performance input data 314, and/or the fabric data 318. The daylight glare probability value and/or the spatial daylight autonomy value may be higher for fabrics that have a greater openness factor, greater visible light transmittance TV-FABRIC, or lighter color group at a location (e.g., a latitude and longitude) that receives more daylight or a greater maximum daylight intensity level. The fabrics with a greater openness factor, greater visible light transmittance TV-FABRIC, or lighter color group may receive a higher score for the daylight glare probability value or the spatial daylight autonomy value when used at a façade angle or a building orientation that receives more daylight or a greater maximum daylight intensity level.
As illustrated in Equations 10-12, the resulting daylight glare probability value, the spatial daylight autonomy value, and/or the maximum daylight glare probability value of a fabric may be affected by the basic input data 612, the computed fabric performance input data 314, and/or the fabric data 318. The fabrics with a greater openness factor, greater visible light transmittance TV-FABRIC, or lighter color group may receive a higher score for the daylight glare probability value, for the maximum daylight glare probability value, and/or for the spatial daylight autonomy value when used in a space that has a shorter buffer zone or a lower window-to-wall ratio. The fabrics with a greater openness factor, greater visible light transmittance TV-FABRIC, or lighter color group may receive a higher score for the daylight glare probability value, for the maximum daylight glare probability value, and/or for the spatial daylight autonomy value when the glass type or visible light transmittance of the glass TV_GLASS allows more visible light through the glass. The fabrics with a greater openness factor, visible light transmittance TV-FABRIC, or lighter color group may receive a higher score for the daylight glare probability value, for the maximum daylight glare probability value, and/or for the spatial daylight autonomy value when the space type receives more visible light, the maximum amount of daylight glare at a space is higher, the amount of time the space receives daylight glare is higher, or the room colors are lighter. As described above, the increased score for the variables in Equations 10-12 may be used indicate an increased amount of daylight or daylight glare. Other scoring systems may also be used.
As illustrated in Equations 12 and 13, the maximum daylight glare probability value and/or the view rating for a fabric may be affected by the basic input data 612 and/or the computed fabric performance input data 314. For example, the view rating may differ based on space type. In a space type for which the view is less important, such as a transition area for example, the view rating may be lower because the view may be less important to an occupant. In a space type for which the view may be more important, such as a social area or a functional area for example, the view rating may be higher because the view may be more important to an occupant. The maximum daylight glare probability value may also differ based on space type. In a space type for which the amount of glare may be perceived for a shorter period of time by the occupant, such as a transition area for example, the maximum daylight glare probability value may be greater because it may be less noticeable or bothersome to the occupant. In a space type for which the amount of glare may be perceived for a longer period of time by an occupant, such as a social area or a functional area, the maximum daylight glare probability value may be lower because it may be more noticeable or bothersome to the occupant. The fabrics that receive a greater daylight glare probability value may have a higher view rating. This may be because the shades allow more light to pass through, thus increasing the view. Similarly, the fabrics that are used at a façade angle and/or a building orientation that receives more daylight and/or a greater maximum daylight intensity level may receive a lower view rating due to the lower shade level limiting the glare. The fabrics that may be used in a space that has a shorter buffer zone, and/or a lower window-to-wall ratio may receive a lower view rating, as the user may have a smaller view when closer to a bigger window. When the glass type and/or the visible light transmittance of the glass TV_GLASS allow more visible light through, the fabrics may receive a higher view rating as a better view may be perceived. These fabrics, however, may receive a lower view score, or such scores may be mitigated, when the shades are lowered due to the increased amount of daylight. As described above, the increased score for the variables in Equations 12 and 13 may be used indicate an increased maximum daylight glare probability value and view, respectively, but other scoring systems may be used.
The daylight glare probability value and/or the maximum daylight glare probability value may be calculated based on the originally received basic input data 612. For example, the basic input data 612 may be passed through the fabric selection wizard module 310 as an input for the fabric performance engine 316 without additional calculations being performed. The daylight glare probability value and/or the spatial daylight autonomy value may be calculated based on how an identified fabric in the fabric data 318 performs under the conditions indicated in the basic input data 612 and/or the computed fabric performance input data 314. The maximum daylight glare probability value and/or the view rating may be based on the basic input data 612 and/or the computed fabric performance input data 314. The daylight glare probability value, the spatial daylight autonomy value, the maximum daylight glare probability value, and/or the view rating may each be determined based on a manual or automated control of the shades, as described herein.
As described above, window treatments having the fabrics in the fabric data 318 may perform differently based on the basic input data 612 and/or the computed fabric performance input data 314. The fabric performance output 320 may include the performance metrics for each fabric in the fabric data 318 or a subset of the fabrics in the fabric data 318. The subset of fabrics may be based on input data on which the fabrics in the fabric data 318 may be filtered, such as fabrics with an identified openness factor, visible light transmittance TV-FABRIC, color or color group, view clarity rating, certification, and/or the like.
A given fabric may generate a different amount of daylight glare and/or a different spatial daylight autonomy rating depending upon the installation location in the building (e.g., the façade on which the window treatment is installed). The fabric performance engine 316 may analyze each fabric of the fabric data 318 at the different façades. The analysis may be performed based on the orientation angle of each façade. The fabric performance engine 316 may include performance metrics in the fabric performance output 320 regarding each of the façades along which the window treatments may be installed.
At 614, the fabric performance engine 316 may analyze each fabric of the fabric data 318 based on automated and/or manual control. The fabrics in the fabric data 318 may perform differently under automated (e.g., motorized) control than under manual control. Automated (e.g., motorized) control of the window treatments may provide for increased energy savings and/or comfort for the occupants. The fabric performance engine 316 may include performance information in the fabric performance output 320 that indicates the performance of the fabric when the fabric is in a window treatment performing under automated and/or manual control.
At 614, the fabric selection wizard module 310 may choose the performance characteristics from the fabric performance output 320 that may be relevant to the configurations of the building in which the window treatment may be installed. For example, the fabric performance engine 316 may provide the fabric performance output 320 to the fabric selection wizard module 310 that conforms to the environment in which the window treatment may be installed (e.g., location, façade orientation, buffer zone, window size, glass type, space type, window-to-wall ratio, the visible light transmittance of the glass TV_GLASS, etc.). In another example, the fabric performance engine 316 may provide fabric performance output 320 that includes performance data for various environments (e.g., location, façade orientation, buffer zone, window size, glass type, space type, window-to-wall ratio, the visible light transmittance of the glass TV_GLASS, etc.) to the fabric selection wizard module 310. The fabric selection wizard module 310 may select the data in the fabric performance output 320 that conforms to the environment in which the window treatment may be installed. The environment in which the window treatment may be installed may be determined based on the basic input data 612 and/or the computed fabric performance input data 314.
Since the fabric data 318 may include multiple fabrics within the same family and color group, but other different characteristics (e.g., openness factors and/or transmittances), the fabric selection wizard module 310 may analyze the performance metrics for the fabrics having a given family and/or color group across the different façades of the building. The fabric selection wizard module 310 may generate a combination matrix that has an entry for each unique combination of fabrics that may exist on the multiple façades of the building at 614. Each unique combination of fabrics may have the same family and/or color group. For example, if the building has four façades, each entry of the combination matrix may have four identifiers (e.g., a fabric for each of the four façades). The identifiers indicate fabrics having the same family and/or color group, but possibly differing openness factors and transmittances.
For each entry in the combination matrix, the fabric selection wizard module 310 may calculate a combined daylight glare probability value, a combined spatial daylight autonomy value, a combined maximum daylight glare probability value, and/or a combined view rating for the four identifiers in that entry of the combination matrix. The combined daylight glare probability value may be an average of the daylight glare probability value for each façade. The combined daylight glare probability value may be based on the worst case daylight glare probability value across the façades. The combined spatial daylight autonomy value may be an average of the spatial daylight autonomy value for each façade. The combined spatial daylight autonomy value may be based on the worst case spatial daylight autonomy value across the façades. The combined maximum daylight glare probability value may be an average of the maximum daylight glare probability value for each façade. The combined maximum daylight glare probability value may be based on the worst case daylight glare probability value across the façades. The combined view rating may be an average of the view rating for each façade. The combined view rating maybe based on the worst case view rating across the façades. The fabric selection wizard module 310 may store the combined daylight glare probability value, the combined spatial daylight autonomy value, and/or the combined view rating in each entry of the combination matrix.
At 616, the fabric selection wizard module 310 may compute one or more summary scores based on the entries in the fabric performance output 320. For example, the fabric selection wizard module 310 may compute a glare score, a daylight score, and/or a view score. The fabric selection wizard module 310 may also compute a direct glare score for one or more fabrics in the fabric performance output 320. The glare score, the daylight score, and/or the view score may be calculated based on a combined score for the building that may be stored in the combination matrix. The glare score may be calculated based on the combined daylight glare probability value for each fabric in the combination matrix. The daylight score may be calculated based on the combined spatial daylight autonomy value for each fabric in the combination matrix. The daylight score may be the same and/or may be used interchangeably with the daylight score. The view score may be calculated based on the combined view rating and/or view clarity rating. The glare score, the daylight score, and/or the view score may be calculated for automated and/or manual window treatments.
In another example, the summary scores may be calculated for each façade. Similarly, predicted performance metrics may be calculated for each façade. The summary scores may also be calculated for multiple facades. Similarly, predicted performance metrics may be calculated for multiple façades. The scores for the façades may be calculated using each fabric. Fabric set scores may be calculated, for example, for different sets of fabrics for multiple facades. The fabric set score may indicate a performance of a set of fabrics when each fabric is used in a window treatment on a different façade of the building. Each fabric in a set of fabrics may have characteristics that are the same of different. For example, the fabrics in a set of fabrics may be of the same family or color group. If the same fabric or fabric family, color group, color and/or openness factor are used for the facades, the scores across the facades may be calculated, for example, when combining multiple facades. A fabric family may comprise a plurality of fabrics with the same material, same texture, or same manufacturer. A color group may comprise a plurality of fabrics with varying shades of a same color or a plurality of fabrics with a combination of colors including at least one color that is the same color. If the same fabric color is used for the facades, an openness factor (e.g., the best openness factor) may be selected by each façade, and the summary scores may be calculated across the facades, for example, when combining multiple facades.
The glare score may indicate a predicted amount of glare resulting in a building from use of the at least one fabric in the window treatment. The fabric selection wizard module 310 may set the glare score at a relatively higher level if the daylight glare probability value for the entry in the fabric performance output 320 is lower than a predefined high level threshold. The high level threshold may be the maximum daylight glare probability value. The fabric selection wizard module 310 may set the glare score at a relatively lower level if the daylight glare probability value for the entry in the fabric performance output 320 is equal to or greater than a predefined low level threshold. The fabric selection wizard module 310 may set the glare score at a level between the high level and the low level, for example, if the daylight glare probability value for the entry in the fabric performance output 320 is between the high level and low level thresholds.
In an example in which the daylight glare probability value indicates a number of hours of daylight glare over a period of time, the fabric selection wizard module 310 may set the glare score equal to 100% if the average daylight glare probability value for the entry in the combination matrix is at zero hours. The fabric selection wizard module 310 may set the glare score equal to 50% if the average daylight glare probability value is less than or equal to the allowed annual hours of potential glare (e.g., from the basic input data 612 and/or the computed fabric performance input data 314). The fabric selection wizard module 310 may set the glare score equal to zero if the average daylight glare probability value is greater than the allowed annual hours of potential glare.
The glare score may also, or alternatively, be a function of the maximum daylight glare probability value from the basic input data 612 and/or the computed fabric performance input data 314 computed at 610. For example, the fabric selection wizard module 310 may set the glare score equal to 100 if the daylight glare probability value is less than the maximum daylight glare probability value. If the daylight glare probability value is greater than the maximum daylight glare probability value, but is less than the maximum daylight glare probability value plus ten percent, then the fabric selection wizard module 310 may set the glare score as illustrated in Equation 14.
GlareScore(FabricID)=100−(DGPValue(FabricID)−MaxDGPValue(FabricID))*1000 Equation 14:
If the daylight glare probability value is greater than or equal to the maximum daylight glare probability value, then the fabric selection wizard module 310 may set the glare score to zero indicating a poor glare score.
The glare score may be calculated based on the daylight glare probability value for each façade of a building. The glare score may be based on the daylight glare probability value, the average daylight glare probability value, the hours a daylight glare probability value is exceeded annually, and/or the maximum daylight glare probability value. The maximum daylight glare probability value may be based on an industry recommended value for the daylight glare probability value of a fabric. The daylight glare probability value and/or maximum daylight glare probability values may be space specific. For example, daylight glare probability value and/or maximum daylight glare probability values may change depending upon whether the space is a work space, a transitional space, or a social space. For example, a 30% daylight glare probability value is optimal for a work space, while a 35% daylight glare probability value is optimal for a social space or a transitional space. The glare score may indicate the visual discomfort that is perceived when a high intensity of diffuse light is transmitted through a fabric. The glare score may indicate the visual discomfort that is perceived when a high intensity of diffuse light is transmitted through a fabric.
Using a calculated glare score, the fabric selection wizard module 310 may calculate a direct glare score. A direct glare score may indicate the reduction in glare based on the fabric. The direct glare score may be based on the glare score and/or the direct glare adjustment score. The direct glare adjustment score may be based on the maximum direct visual transmittance of a fabric (Direct TV-MAX). The Direct TV-MAX (may be a variable indicating when the sun is at its lowest angle relative to the façade. The Direct TV-MAX variable may be a calculated according to Equation 15, and may be a function of the openness factor of the fabric and the input.
Direct TV-MAX=f(Input;OF) Equation 15:
The Direct TV-MAX may increase as the openness factor of the fabric increases. The input in the Direct TV-MAX variable may include the visual transmittance of the glass, the orientation of façade and/or latitude and longitude of the façade. Based on the inputs, the angle of the sun may be determined relative to the façade. Using the angle of the sun relative to the building and the light transmitted through the glass and the fabric at that angle, the percentage of sun rays that pass through the fabric and glass may be determined. The direct glare adjustment score may also be based on a maximum visual transmittance direct (MAX(TV-DIRECT)) variable of the fabric. The MAX(TV-DIRECT) variable may be a modifier for the Direct TV-MAX variable based on the space type (e.g., work space, transitional space, social space). The MAX(TV-DIRECT) may indicate the ideal limit for direct sun glare such that the average occupant perceives no visual discomfort. Using the Direct TV-MAX and MAX(TV-DIRECT), the direct glare adjustment score may be calculated. For example, an equation for calculating the direct glare adjustment score may be illustrated in Equation 16 below.
Direct Glare Adjustment Score=(Direct TV-MAX(fabric)−MAX(TV-DIRECT)*50 Equation 16:
The direct glare adjustment score may indicate the reduction in overall glare score to account for glare from direct view of the sun orb. The factor of 50 represents a scaling factor. For example, since the MAX(TV-DIRECT) changes with space type, in a work space, the MAX(TV-DIRECT) may be equal to 1. The Direct TV-MAX may be between 1 to 3, with 1 being the best and 3 being the worst, to ideally obtain a zero glare adjustment score. In a transitional space or social space, however, the MAX(TV-DIRECT) may be equal to 2. The Direct TV-MAX may be between 2 to 4, with 2 being the best and 4 being the worst, to ideally obtain a zero glare adjustment score.
The direct glare score may indicate the reduction in glare based on metrics computed for closed shades for maximal glare control, or metrics computed based on automated shades. The fabric selection wizard module 310 may calculate the direct glare score based on the glare score and the direct glare adjustment. For example, an equation for calculating the direct glare score may be illustrated in Equation 17 below.
Direct Glare Score=Glare Score−Direct Glare Adjustment Equation 17:
The glare score for each façade may be combined (e.g., averaged or based on the lowest glare score for each façade) to determine the glare score for the building. For example, an equation for calculating the glare combined score is illustrated in Equation 18 below.
GlareCombined=(Σ(Direct Glare Score)1+ . . . +(Direct Glare Score)n)/n Equation 18:
The combined glare score may be calculated using the average direct glare scores for each faCade or the worst calculated direct glare scores for each façade. In Equation 18, the average of the direct glare scores is computed, such that n equals the total number of glare summary scores, which is equal to the number of facades.
The daylight score may be calculated based on the spatial daylight autonomy value for each façade of the building. To compute the daylight scores, the fabric selection wizard module 310 may set the daylight scores based on the spatial daylight autonomy value of the fabrics. The daylight scores for each fabric may be determined based on the glare score for the fabric. The fabric selection wizard module 310 may determine the fabric that has the highest spatial daylight autonomy value of the fabric when combined with a glare score. For example, the fabrics with the highest daylight scores having a glare score of 100% may be assigned a daylight score of 100%. As the spatial daylight autonomy value decreases for the fabrics at each glare score, the daylight score also decreases. The daylight scores may similarly decrease as the glare scores decrease, for example, when values other than 100% for the glare score are used.
The fabric selection wizard module 310 may set the daylight scores for the other fabric combinations by normalizing the spatial daylight autonomy ratings as compared to the spatial daylight autonomy rating of the fabric combination having the daylight score of 100%. For example, the fabric selection wizard module 310 may set the daylight score of each other fabric combination equal to the spatial daylight autonomy rating of that combination divided by the spatial daylight autonomy rating of the fabric combination having the daylight score of 100%. The fabric selection wizard module 310 may limit the daylight scores to 100% or less.
TABLE 1 illustrates an example for calculating the daylight score based on the glare score and the spatial daylight autonomy value.
As shown in TABLE 1, the spatial daylight autonomy values that are associated with the highest glare score (e.g., a glare score of 100%) may set the upper limit for the daylight score. In the example shown in TABLE 1, the shade fabric having a 40% spatial daylight autonomy value may receive the upper limit for the daylight score (e.g., daylight score of 100%). In TABLE 1, the spatial daylight autonomy values above the spatial daylight autonomy that is determined to be the upper limit may receive the highest daylight score (e.g., 100%), regardless of glare score. The spatial daylight autonomy values below the upper limit may receive a fraction of the highest daylight score, regardless of glare score. For example, in TABLE 1, as the spatial daylight autonomy value moves down by 10%, the daylight score moves down by 25%. In other examples, the daylight score may change by different amounts relative to the spatial daylight autonomy value, or the spatial daylight autonomy value and the glare score may each be considered to determine each daylight score. For example, the spatial daylight autonomy value and the glare score may be added or averaged to determine each daylight score.
The fabric selection wizard module 310 may calculate the daylight score based on the automated spatial daylight autonomy value for each façade of the building. The daylight score may indicate a predicted amount of daylight resulting in the interior space from use of the fabric in the window treatment. The fabric selection wizard module 310 may calculate the summary daylight score based on the spatial daylight autonomy limit value. The spatial daylight autonomy limit value may be the maximum spatial daylight autonomy value for the fabrics with a glare summary score higher than zero. An example equation for calculating the daylight autonomy summary score is illustrated in Equation 19 below.
Daylight Score=sDA/sDALIMIT Equation 19:
The daylight score for each façade may be combined (e.g., averaged or based on the lowest daylight score for each façade) to determine the daylight score for the building. For example, an equation for calculating the daylight combined score is illustrated in Equation 20 below.
DaylightCombined=(Σ(sDA/sDALIMIT)1+ . . . +(sDA/sDALIMIT)n)/n Equation 20:
In Equation 20, the average of the daylight summary scores is computed, such that n equals the total number of daylight summary scores, which is equal to the number of façades.
The view scores for each fabric may be determined based on the glare score for the fabric. The view score may indicate an occupant's predicted amount of view out of the at least one window when the window treatment is installed. The fabric selection wizard module 310 may determine the fabric that has the highest view preservation rating when combined with a glare score. For example, the fabrics with the highest view scores having a glare score of 100% may be assigned a view score of 100%. As the view preservation rating decreases for the fabrics at each glare score, the view score may also decrease. The view scores may similarly decrease as the glare scores decrease when values other than 100% for the glare score are used.
TABLE 2 illustrates an example for calculating the view score based on the glare score and the view preservation rating.
As shown in TABLE 2, the view preservation ratings that are associated with the highest glare score (e.g., a glare score of 100%) may set the upper limit for the view score. In the example shown in TABLE 2, the shade fabric having a 60% view preservation rating may receive the upper limit for the view score (e.g., view score of 100%). In TABLE 2, the view preservation values above the view preservation value that is determined to be the upper limit may receive the highest view score (e.g., 100%), regardless of glare score. The view preservation ratings below the upper limit may receive a fraction of the highest view score, regardless of glare score. As the view preservation rating moves down, the view score may move down according to a predetermined percentage. In other examples, the view score may change by different amounts relative to the view preservation rating, or the view preservation rating and the glare score may each be considered to determine each view score. For example, the view preservation rating and the glare score may be added or averaged to determine each view score.
The fabric selection wizard module 310 may set the view scores for the other fabric combinations by normalizing the view preservation ratings as compared to the view preservation rating of the fabric combination having the view score of 100%. For example, the fabric selection wizard module 310 may set the view score of each other fabric combination equal to the view preservation rating of that combination divided by the view preservation rating of the fabric combination having the view score of 100%. The fabric selection wizard module 310 may limit the view scores to 100% or less.
The view score may be calculated based on the view rating and/or view clarity rating for each façade of the building. The view score for each façade may be combined (e.g., averaged or based on the lowest view score for each façade) to determine the view score for the building. The view preservation rating may be calculated based on an automated view. To compute the view preservation rating, the fabric selection wizard module 310 may use the percent openness of the fabric, the view score, and the view limit score. The percent openness of the fabric may be calculated based on the typical shade position and the WWR. For example, an equation for calculating the percent openness of the fabric is illustrated in Equation 21 below.
% Open(Fabric)=(TypicalShadePosition(Fabric)−WindowHeight)/(WWR(Fabric)−CeilingHeight) Equation 21:
As illustrated in Equation 21, the percent openness of a fabric may be affected by the typical shade position of the fabric as well as the WWR for the fabric. The typical shade position may be determined by averaging the shade position measured during every daylight hour in a calendar year. In Equation 21, the ceiling height may be estimated (e.g., an estimated height of 120 inches). Based on the actual height of the ceiling, the ceiling height variable may change to represent the actual height of the ceiling. Similarly, in Equation 21, the distance between the floor and the bottom of the window may be estimated (e.g., an estimated height of 30 inches). Based on the actual distance between the floor and the bottom of the window, the window height variable may change to represent the actual distance between the floor and bottom of the window.
The view score may also, or alternatively, be calculated based on a view preservation rating. The view preservation rating may be a combination of the view rating and the clarity rating. To compute the view scores, the fabric selection wizard module 310 may use the view rating, the view clarity rating, and/or the view preservation rating. For example, the fabric selection wizard module 310 may calculate the view preservation rating based on a combination of the view rating and the view clarity. The view preservation rating may indicate a total amount of a window view that may be preserved when a window treatment is used. For example, the view preservation rating may be 100% when a window treatment is fully open (e.g., same as the view rating) and may be 10% when the window treatment is fully closed (e.g., the same as the view clarity rating). The 10% rating when fully closed may indicate that the fabric allows a small amount of view to the outdoors even when closed due to the openness factor. Specifically, 10% may indicate that a typical person would see 10% as well through the fabric as without it there. The view preservation rating may be based on the combined view rating and the combined view clarity rating for a building, or the view preservation rating may be determined for each façade. The fabric selection wizard module 310 may calculate the view rating based on the percent openness of the fabric and the view clarity score for the fabric. For example, an equation for calculating the view rating of the fabric is illustrated in Equation 22 below.
ViewRating(Fabric)=% Open(Fabric)+(1−% Open(Fabric))*ViewClarity(Fabric) Equation 22:
As illustrated in Equation 22, the view rating for the fabric may be affected based on the percent openness score and the view clarity. The view rating score may be used interchangeably with the view score, and vice versa.
The view clarity rating may indicate the amount of visibility available through a fabric. For example, an equation for calculating the view clarity rating of the fabric is illustrated in Equation 23 below.
VCI=1.36*(OF)0.51+0.68*(OF/TV-FABRIC1.19−0.18 Equation 23:
The view limit rating may be calculated based on the view rating and the glare summary scores for the fabrics. For example, an equation for calculating the view limit rating is illustrated in Equation 24 below.
ViewLimitRating=MAX(View Score The Fabrics with Direct Glare Score>0) Equation 24:
The view limit rating value may indicate the maximum spatial daylight autonomy value for the fabrics with a glare summary score higher than zero. The view limit rating value may be the highest value that can be obtained without resulting in a high perceived glare. As shown in Equation 25, the view limit rating may change based on the fabrics selected, as well as the direct glare score for the fabrics. Using Equations 21-24, the fabric selection wizard module 310 may calculate the view score. For example, an equation for calculating the view score is illustrated in Equation 25 below.
View Score=ViewRating(Fabric)/ViewLimitRating Equation 25:
The view score for each façade may be combined (e.g., averaged or based on the lowest view score for each façade) to determine the view score for the building. For example, an equation for calculating the view combined score is illustrated in Equation 26 below.
ViewCombined=(Σ(ViewPreservSum(Fabric))1+ . . . +(ViewPreservSum(Fabric))n)/n Equation 26:
In Equation 26, the average of the view scores is computed, such that n equals the total number of view preservation summary scores, which is equal to the number of façades.
The fabric selection wizard module 310 may assign each of the fabric combinations of the combination matrix an overall rating based on the glare score and/or the daylight score of the respective fabric combination. The overall rating may comprise, for example, a star rating between five and zero stars, with five stars being the best rating. For example, the fabric selection wizard module 310 may assign the overall ratings to a fabric combination as follows:
5.0 Stars if Glare Score=100% & Daylight Score ≥90%;
4.5 Stars if Glare Score=100% & Daylight Score ≥80%;
4.0 Stars if Glare Score=100% & Daylight Score ≥70%;
3.5 Stars if Glare Score=100% & Daylight Score ≥50%;
3.0 Stars if Glare Score=100% & Daylight Score <50%;
2.5 Stars if Glare Score=50% & Daylight Score ≥90%;
2.0 Stars if Glare Score=50% & Daylight Score ≥80%;
1.5 Stars if Glare Score=50% & Daylight Score ≥70%;
1.0 Stars if Glare Score=50% & Daylight Score ≥50%;
0.5 Stars if Glare Score=50% & Daylight Score <50%; and
0 Stars if Glare Score=0%.
In another example, the fabric selection wizard module 310 may assign the overall ratings to a fabric combination using a glare score and/or a daylight-view score of each fabric combination. The daylight-view score may indicate the daylight score, the view score, or a combination thereof. The daylight-view score may be based on the space type. For example, when the space type is a functional area, the daylight-view score may be an average of the daylight score and the view score. When the space type is a transition area, the daylight-view score may be equal to the daylight score. When the space type is a social area, the daylight-view score may be equal to the view score. For example, the fabric selection wizard module 310 may assign the overall ratings to a fabric combination using the daylight-view score as follows:
5.0 Stars if Glare Score=100% & Daylight-View Score ≥90%;
4.5 Stars if Glare Score=100% & Daylight-View Score ≥80%;
4.0 Stars if Glare Score=100% & Daylight-View Score ≥70%;
3.5 Stars if Glare Score=100% & Daylight-View Score <70%;
3.0 Stars if Glare Score >66% & Daylight-View Score ≥90%;
2.5 Stars if Glare Score >66% & Daylight-View Score ≥80%;
2.0 Stars if Glare Score >66% & Daylight-View Score ≥70%;
1.5 Stars if Glare Score >66% & Daylight-View Score <70%;
1.0 Stars if Glare Score >33% & Daylight-View Score ≥90%;
0.5 Stars if Glare Score >33% & Daylight-View Score <90%; and
otherwise, 0 Stars.
In another example, the fabric selection wizard module 310 may assign the overall ratings to a fabric combination using a glare score and/or a daylight/view score of each fabric combination. The daylight/view score may be based on the space type. For example, when the space type is a functional area, the daylight/view score may be an average of the daylight score and the view score. When the space type is a transition area, the daylight/view score may be equal to two-thirds of the daylight score added to one-third of the view score. When the space type is a social area, the daylight/view score may be equal to one-third of the daylight score added to two-thirds of the view score. For example, the fabric selection wizard module 310 may assign the overall ratings to a fabric combination using the daylight/view score as follows:
5.0 Stars if Glare Score=75% & DaylightNiew Score=MAX(Best);
4.5 Stars if Glare Score=75% & DaylightNiew Score ≥90V MAX(Best);
4.0 Stars if Glare Score=75% & DaylightNiew Score ≥80V MAX(Best);
3.5 Stars if Glare Score=75% & DaylightNiew Score <70V MAX(Best);
3.0 Stars if Glare Score >75% & DaylightNiew Score ≥70V MAX(Best);
2.5 Stars if Glare Score >50% & DaylightNiew Score MAX(Good);
2.0 Stars if Glare Score >50% & DaylightNiew Score ≥90V MAX(Good);
1.5 Stars if Glare Score >50% & DaylightNiew Score <70V MAX(Good);
1.0 Stars if Glare Score >50% & DaylightNiew Score ≥70V MAX(Good);
0.5 Stars if Glare Score >25% & DaylightNiew Score Not Applicable
0 Stars if Glare Score <25% & Daylight/View Score Not Applicable
Five to three stars may indicate that the fabric is in the Best range, while 2.5-1 star may indicate a fabric is in the Good range. The daylight and view score may be a function of the maximum daylight and view score in the associated range (e.g., Best, Good). While scores of 1-100 percent and stars from 0-5 are used herein, other similar scoring systems may be used.
Referring again to
If the user has not pre-selected a fabric at step 620 (e.g., using the pre-selected fabric input section 510 of the fabric selection input screen 500 shown in
If the user has pre-selected a fabric at step 620 (e.g., using the pre-selected fabric input section 510 of the fabric selection input screen 500 shown in
With regard to the recommended fabric, the fabric characteristics may vary. The variation in fabric characteristics may affect the environment in which the window treatment may be installed. The openness factor and/or the visible light transmittance of a fabric TV-FABRIC may affect the daylight glare probability value. For example, a fabric with a 5% openness factor and a 13% visible light transmittance of a fabric TV-FABRIC may have a 20% daylight glare probability value. As the openness factor and/or the visible light transmittance of a fabric TV-FABRIC increase or decrease, the daylight glare probability value may also increase or decrease, respectively. An occupant of a room may begin to observe daylight glare at about a 35% glare level. The daylight glare may begin to be uncomfortable to the occupant at about a 45% glare level. As a result, a fabric may be manufactured that causes a daylight glare probability value of less than 35%, such as a 33% daylight glare probability value for example. The openness factor and/or the visible light transmittance of a fabric TV-FABRIC may affect the daylight glare probability value. A fabric may be used that prevents the daylight glare probability from reaching the 35% daylight glare probability value, or at least a 45% daylight glare probability value, to avoid making the occupant uncomfortable.
Though fabrics may be recommended that may have less than a 35% or a 45% daylight glare probability value, the openness factor of the fabric may vary. The variation of the openness factor of the fabric may cause the visible light transmittance of a fabric TV-FABRIC and the daylight glare probability value to also vary. For example, a 1% change in the openness factor of the fabric may cause up to about a 10% change in the daylight glare probability value. To prevent the daylight glare probability value from raising above a level of 35% or 45%, the recommended fabrics may be manufactured within a tolerance for openness and/or the recommended fabrics may have a lower maximum daylight glare probability value to offset the variance in openness. For example, the fabric's tolerance for openness may be less than 1% for fabrics that are recommended with less than a 35% daylight glare probability value to prevent the daylight glare probability value from raising to 45% due to variance in openness. The fabric's tolerance for openness may be 0.5% or less to prevent the daylight glare probability value from coming within 5% of the 45% daylight glare probability value. The openness tolerance may be more critical for fabrics with a lower openness. As a result, the openness tolerance may be selected based on the change in daylight glare probability value for fabrics with a lower openness (e.g., 1%-5%).
Fabric recommendations may limit the openness factor and/or the visible light transmittance TV-FABRIC to prevent a daylight glare probability value from reaching a predefined comfort limit or maximum daylight glare probability value (e.g., a 35% maximum daylight glare probability value). For example, a set of input parameters may lead to a recommended fabric with a rated openness of 3% and a visible light transmittance TV-FABRIC of 6%. To prevent the occupant from perceiving glare, the fabric tolerance may be set to +/−0.5%. An example of tolerances and the maximum daylight glare probability values that may result from those tolerances is provided below in TABLE 3.
Recommended fabric may be restricted in openness factor and/or visible light transmittance TV-FABRIC, for example, to prevent the daylight glare probability value from raising above a level of 35% or 45%. For example, the openness on a recommended fabric may be restricted to between 1% and 10%, the openness tolerance may be restricted to 0.5% or less, and the visible light transmittance TV-FABRIC may be restricted to between 1% and 30%, which may result in a daylight glare probability value of approximately 15% to approximately 35%. If the correct limits are selected for the openness factor, the TV-FABRIC, and/or the tolerance, the resulting daylight glare probability value will be 15% to 35%. The resulting daylight glare probability value will depend on the level of restriction of the openness factor, the TV-FABRIC, and/or the tolerance. The maximum daylight glare probability value for a recommended fabric may also, or alternatively, be less than 35% to prevent the openness variance from reaching a noticeable or uncomfortable level for the occupant. For example, the maximum daylight glare probability value for a recommended fabric may be about 33%.
The project information section 710 of the fabric selection output screen 700 may list information regarding the project for the building in which the window treatments may be installed, e.g., the basic input data 312 received by the fabric selection input screen 500 shown in
The selected recommended fabric information section 730 may include an image 732 or other representation of the selected recommended fabric combination 722, such that the user may make decisions on which fabric to purchase based on the aesthetic appearance of the fabric. The selected recommended fabric information section 730 may include a ranking 734 of the selected recommended fabric combination 722, an openness factor 736 for the selected recommended fabric combination 722, and/or performance scores 738 for the selected recommended fabric combination 722. As indicated in
Referring to
The daylight score section 760 may display the useful daylight zone 766 and a daylight score 764. The useful daylight zone may identify a distance into a room from the window that includes an amount of useful daylight. The useful daylight zone may be calculated using the spatial daylight autonomy value and the depth of the room (e.g., 40 feet). An example equation for calculating the useful daylight zone may be illustrated in Equation 27 below.
Useful Daylight Zone=sDA*(RoomDepth) Equation 27:
The daylight score section 760 may display a representation of a room depicting the useful daylight in the room associated with the selected recommended fabric for manual shades and automated shades. For example, in
The glare score section 770 may include a representation of the glare score level for the manual shades 740 and automated shades 750. The glare score section 770 may be based on the glare score. As shown in
The view score section 780 may include a view score 782, a visual representation 784 of the shade level, and/or the typical shade position 786. The visual representation 784 of the shade level may show the typical shade position 786, from which the view score 782 may be based. The view score section 780 may include a view clarity through the fabric (not shown) and/or other information for both the manual shades 740 and automated shades 750.
Referring back to
The user may actuate the button 729, or a similar function, to display THEIA™ Compliant fabrics. As shown in
The user may enlarge a recommended fabric combination and/or show additional information regarding the fabric combination displayed in the recommended fabrics list 720. For example,
Referring again to
As shown in
The comparison of the selected recommended fabric information 731, may include the categories 791a, 791b, 791c and part numbers 792a, 792b, 792c for the respective selected recommended fabric combinations 722, 723, 724. The comparison of the selected recommended fabric information 731 may provide the user the option to add one or more of the selected recommended fabric combinations 722, 723, or 724 to a project or to a sample request by actuation of the respective request buttons 797a, 797b, or 797c. The comparison of the selected recommended fabric information 731 may provide the user the option to generate a report one or more of the selected recommended fabric combinations 722, 723, or 724 upon actuation of the respective report generating buttons 799a, 799b, or 799c. The comparison of the selected recommended fabric information 731 may allow the user to view the fabric information for one or more of the selected recommended fabric combinations 722, 723, or 724 by actuating a respective view fabric info button 739a, 739b, or 739c. If a user actuates the view fabric info button 739a, 739b, or 739c, the user may be taken to an enlarged recommended fabric combination section 790 for the corresponding fabric, for example, as shown in
The control circuit 802 may store information in and/or retrieve information from the memory 808. The memory 808 may include a non-removable memory and/or a removable memory for storing computer-readable media. The non-removable memory may include random-access memory (RAM), read-only memory (ROM), a hard disk, and/or any other type of non-removable memory storage. The removable memory may include a subscriber identity module (SIM) card, a memory stick, a memory card (e.g., a digital camera memory card), and/or any other type of removable memory. The control circuit 802 may access the memory 808 for executable instructions and/or other information that may be used by the network device 800. The control circuit 802 may store the unique identifiers (e.g., serial numbers) of the control devices to which the network device 800 is associated in the memory 808. The control circuit 802 may access instructions in the memory 808 for executing the fabric selector tool, or portions thereof. The control circuit 802 may store the basic input data 312, the computed fabric performance input data 314, the fabric performance output 320, the fabric data 318, the recommendation scores, the fabric recommendations, and/or other information that may be used by the fabric selector tool in the memory 808.
The network device 800 may comprise a network communication circuit 804, which may be adapted to performed wired and/or wireless communications (e.g., with the system controller device 110 or another device over a network) on behalf of the network device 800. The network communication circuit 804 may be a wireless communication circuit, for example, including an RF transceiver coupled to an antenna 812 for transmitting and/or receiving RF signals (e.g., the RF signals 106 shown in
The network device may comprise an actuator 806. The control circuit 802 may be responsive to the actuator 806 for receiving a user input. For example, the control circuit 802 may be operable to receive a button press from a user on the network device 800 for making a selection or performing other functionality on the network device 800.
The network device may comprise a display 810. The control circuit 802 may be in communication with a display 810 for displaying information to a user. The communication between the display 810 and the control circuit 802 may be a two way communication, as the display 810 may include a touch screen module capable of receiving information from a user and providing such information to the control circuit 802.
The network device 800 may comprise a power supply 814 for generating a DC supply voltage VCC for powering the control circuit 802, the network communication circuit 804, the memory 808, the display 810, and/or other circuitry of the network device 800. The power supply 814 may be a battery or another source of power for the network device 800.
One or more of the components illustrated in the network device 800 may be similarly included in another remote computing device, such as a network server for example. The functionality of the fabric selection tool 300 may be included in the network device 800 and/or may be distributed between the network device 800 and one or more remote computing devices. For example, the fabric performance engine 316 may be executed on a remote computing device, while the fabric selection wizard module 310 may be executed by the network device 800.
The wireless control device 900 may comprise a wireless communication circuit 916, for example, including an RF transceiver coupled to an antenna for transmitting and/or receiving RF signals (e.g., the RF signals 106 shown in
The control circuit 910 may be responsive to an actuator 920 for receiving a user input. For example, the control circuit 910 may be operable to associate the wireless control device 900 with one or more control devices of the load control system 100 in response to actuations of the actuator 920 during a configuration procedure of the load control system 100. The wireless control device 900 may comprise additional actuators to which the control circuit 910 may be responsive.
The control circuit 910 may store information in and/or retrieve information from the memory 918. The memory 918 may include a non-removable memory and/or a removable memory for storing computer-readable media. The non-removable memory may include random-access memory (RAM), read-only memory (ROM), a hard disk, and/or any other type of non-removable memory storage. The removable memory may include a subscriber identity module (SIM) card, a memory stick, a memory card (e.g., a digital camera memory card), and/or any other type of removable memory. The control circuit 910 may access the memory 918 for executable instructions and/or other information that may be used by the wireless control device 900. The control circuit 910 may store the unique identifiers (e.g., serial numbers) of the control devices to which the wireless control device 900 is associated in the memory 918. The control circuit 910 may access instructions in the memory 918 for executing the fabric selector tool, or portions thereof. The control circuit 910 may store the basic input data 312, the computed fabric performance input data 314, the fabric performance output 320, the fabric data 318, the recommendation scores, the fabric recommendations, and/or other information that may be used by the fabric selector tool in the memory 918.
The control circuit 910 may illuminate a visual indicator 922 to provide feedback to a user of the load control system 100. For example, the control circuit 910 may blink or strobe the visual indicator 922 to indicate a fault condition. The control circuit 910 may be operable to illuminate the visual indicator 922 different colors to indicator different conditions or states of the wireless control device 900. The visual indicator 922 may be illuminated by, for example, one or more light-emitting diodes (LEDs). The wireless control device 900 may comprise more than one visual indicator.
The wireless control device 900 may comprise a power supply 924 for generating a DC supply voltage VCC for powering the control circuit 910, the network communication circuit 912, the wireless communication circuit 916, the memory 918, and/or other circuitry of the wireless control device 900. The power supply 924 may be coupled to a power supply connector 926 (e.g., a USB port) for receiving a supply voltage (e.g., a DC voltage) and/or for drawing current from an external power source.
One or more of the components illustrated in the wireless control device 900 may be similarly included in another computing device, such as the network device 800 or a network server for example. The functionality of the fabric selection tool 300 may be included in the wireless control device 900 and/or may be distributed between the wireless control device 900 and one or more remote computing devices. For example, the fabric performance engine 316 may be executed on the wireless control device 900, while the fabric selection wizard module 310 may be executed by the network device 800.
Although features and elements have been described in relation to particular embodiments, many other variations, modifications, and other uses are apparent from the description provided herein. For example, while various types of hardware and/or software may be described for performing various features, other hardware and/or software modules may be implemented. The disclosure herein may not be limited by the examples provided.
Claims
1. A method comprising:
- presenting a recommendation to a user for a window treatment, wherein the recommendation is based on a position of the window treatment and are controlled by the automated window treatment control system.
Type: Application
Filed: Apr 26, 2022
Publication Date: Aug 11, 2022
Applicant: Lutron Technology Company LLC (Coopersburg, PA)
Inventors: Edward J. Blair (Telford, PA), Samuel F. Chambers (Gwynedd Valley, PA), Laura M. Gabriel (Harleysville, PA), Michelle L. Greene (Bethlehem, PA), Andrew J. Lawler (Macungie, PA), Joseph Roy Parks (Emmaus, PA), Brent Protzman (Easton, PA), Staci L. Quirk (Oxford, NJ)
Application Number: 17/729,348