Abstract: In a method of determining air humidity, a capacitive moisture measuring element (2) used in a moisture sensor for calculation operations is modelled by a parallel circuit of an ideal capacitor (C) and an ohmic resistance (Rp). Charging and/or discharging of the capacitive moisture measuring element (2) by way of a first measuring resistor (R1; RA) provides for ascertaining a first time constant or a first period duration of the charging and/or discharging operation, and charging and/or discharging of the moisture measuring element (2) by way of a second measuring resistor (R2; RA//R) provides for ascertaining a second one. The capacitance (C) of the moisture measuring element (2) is then calculated from the two time constants or the two period durations, a value for the moisture level finally being ascertained from the capacitance. This method achieves a higher level of measuring accuracy on the part of the moisture sensor.

Abstract: According to the present invention, a fail-safe circuit for controlling an actuator is provided with an input voltage which is rectified and converted to a DC voltage. The DC voltage is boosted to a high level, and high voltage storage capacitors are charged at this high voltage level resulting in smaller, less expensive capacitors. The high voltage from the storage capacitors is then converted back to a smaller DC voltage to drive the motor of the actuator. Reduced size and increased energy storage is based on the relationship between capacitance and voltage in the equation: E=½ CV2.

Abstract: An environmental control system is configured to accept network variable outputs from a plurality of sources on a single network variable input and the update values are stored in a data structure for the computation of control variable values. The system includes a sink controller having a network variable input and a plurality of sources, each having at least one network variable output coupled to the network variable input of the sink controller. A data structure is provided so that update values from the sources may be stored in the structure with reference to the sources that provided the update values. Aggregate values, such as a mean average, minimum value, maximum value, standard deviation, variance, sum, or product may be computed from the values stored in the data structure.

Abstract: A system and method generates test vectors and a corresponding test program to manipulate terminal units in a building system so pressure and flow measurements correspond to independent modeling equations. The pressure and flow responses of the building system to the test program manipulation may be used to compute loss coefficients for the modeling equations. The modeling equations may then be updated with the computed loss coefficients so a building simulation may be performed. The simulated static pressure response of the modeling equations may be compared to measured static pressures to evaluate the sufficiency of the modeling equations.

Abstract: The invention relates to a double valve with a valve housing (1), for housing two double-headed actuators (30, 31), whereby the double head actuators have differing head diameters (12, 13) and the flow of a fluid through the both actuators (30, 31) in the valve housing (1) is identical. The valve housing (1) is of one-piece design and a drive function for both actuators (30, 31) is not connected to the inner volume of the valve housing (1) with fluid flowing therein.

Abstract: The present invention includes a system (FIG. 4) for servicing messages between device controller nodes and control applications via a Lon Network, wherein the device controller nodes includes a plurality of network variables for defining parameters of the Lon Network. The system includes a server for servicing the messages from at least one control application, a proprietary communication value for indicating a network variable value from the control applications, and a Lon value for indicating a network variable value exposed on the Lon Network. There is also a method that includes the steps of reading a message from the control application, verifying whether the message is valid, determining the requested function for a specified network variable from the message when the message is valid, executing the requested function for the specified network variable, and sending subscribed reports in response to a change of value of the network variables independently of the foregoing steps (170).

Abstract: The smoke detector contains an optical measuring chamber, having a sensor arrangement (2) with at least one light source (12, 12?) and one light receiver (11), and a labyrinth system (7) with screens (16) arranged on the periphery of the measuring chamber. The light source (12, 12?) and the light receiver (11) are each arranged in a housing (14, 15: 13). The above-mentioned housings (14, 15; 13) have an elongated shape and a small window opening The at least one light source (12, 12?) and light receiver (12, 12?) are arranged in the rear part of their housings (14, 15; 13), so that between the window openings of the housings (14, 15; 13) and the light-penetrated optical surfaces of the at least one light source (12, 12?) and/or the lens of the light receiver (11) a relatively large gap is formed. This gap is preferably greater than the diameter of the above-mentioned optical surfaces, or of the above-mentioned lens.

Abstract: A method of displaying status information of a plurality of smoke detectors includes obtaining first data including a first measurement value representative of a maintenance condition of a first smoke detector, the first measurement value falling within a first range. The method also includes obtaining second data including a second measurement value representative of a maintenance condition of a second smoke detector, the second measurement value falling within a second range, the second range different from the first range. The method further includes displaying first information representative of the first measurement value and second information representative of the second measurement value, the first information and the second information falling within a uniform range.

Abstract: The fire detector comprises an insertable detector assembly which includes a sensor arrangement (2), an electronic evaluation system and a housing (3) which surrounds the sensor arrangement (2) and has openings to provide access by air and, when applicable, smoke to the sensor arrangement (2). The detector is of modular construction and is configured to accommodate detection modules having sensors for different fire parameters, all detection modules being compatible with a single housing (3). The detection module may be configured for optical, thermal or optical-thermal fire detection and/or for detecting combustion gases. The sensor arrangement (2) and the above-mentioned access openings are arranged substantially in one plane, whereby a shallow construction is achieved even in the case of a multi-criterion detector.

Abstract: A valve body is provided that be used as a balanced normally open valve, a balanced closed valve, or as a three way valve. The valve body incorporates a valve plug provided with a pressure port such that pressure chambers are created in the valve body when the valve is being used as either a normally open valve or a normally closed valve.

Abstract: A building control system, such as an HVAC system, has a field unit incorporating a control panel (a field panel) with a local user interface allowing user changes and/or modifications (events) to be made at the field panel to various objects or control points of the field panel, such as the point database, control programs, configurations and other data. A log of the changes made at the control panel is maintained, compiled and/or stored locally (i.e. at the field control panel level). The local log maintains the changes as events. The local log identifies data regarding the change itself, who made the change and when the change was made (identification data). The local log can be viewed locally or uploaded to a workstation where it can be stored, viewed and combined with a system wide log.

Abstract: A system and method for providing data to a model of a building system includes a building control system with a communications network, a control subsystem for generating module deployment data and transmitting the module deployment data over the communications network, a memory for storing a three dimensional model of at least a portion of a building and a computer. A computer program executed by the computer includes computer instructions for associating module deployment data received from the communications network with the three dimensional model and modifying the three dimensional model based upon the module deployment data.

Abstract: A method and apparatus uses a stored model of a building system to render an image showing a condition sensed of the building control system on a mobile display unit. The mobile display unit may be wirelessly integrated into the building control system. The mobile display unit may operate based upon voice commands and/or eye tracking.

Abstract: Automatic operation of a blower burner (5) suitable for liquid and/or gaseous fuels for the generation of heat energy in a furnace (1) is monitored by an automatic regulating device (35). The automatic regulating device (35) comprises an automatic firing device array (26) and an actuating drive (27) located in a common housing (29). The automatic regulating device (35) is connected to a furnace control device (1A), monitoring probes (39) and a fuel feeding and dosing device (12) by means of a terminal sleeve (36) in the housing (29). Based on the signals from the monitoring probes (39), the automatic regulating device (35) regulates the amount of air flowing into the combustion chamber (7) depending on the amount of fuel required for heat output so that optimal fuel combustion takes place in the combustion chamber (7) (for instance combined electronic control).

Abstract: A user interface for controlling and displaying information about devices in a system is disclosed. The user interface is designed to meet the needs for different types of users. A user with no familiarity with the system is provided with a customized message on the display of the user interface. A user with limited experience using the interface may be provided with one or more dedicated input devices for obtaining further information about the system. For a more experienced user, a touch screen is provided allowing the user to control devices from the user interface.

Abstract: A device driver for a system controller having a plurality of pre-programmed controller operating functions for controlling at least one device operatively connected to the system controller. The device driver may set an operating mode of the device from a plurality of predetermined device operating modes, select the device operating mode in accordance with one of the controller operating functions, and define the select controller operating functions based on user specified predetermined system operating modes.

Abstract: A controller for controlling a plurality of end devices in a control network includes a space controller for monitoring and receiving data from a space being maintained by the controller, a supervisory controller in communication with the space controller and a device driver. The device driver includes a first selector for selecting a plurality of first output signals from a plurality of first input signals, a second selector for selecting at least one second output signal from the first output signals, and a third selector for selecting an operating mode of the end device from a plurality of predefined operating modes based on the second output signal.

Abstract: The signals of a danger detector that has at least one sensor (2, 3, 4) for monitoring danger parameters and an electronic evaluation system (1) assigned to the at least one sensor (2, 3, 4) are compared with specified parameters. In addition, the signals are analysed with regard to whether they occur increasingly frequently or regularly, and signals that occur increasingly frequently or regularly are classified as interference signals. The classification of signals as interference signals triggers an appropriate adjustment of the parameters. If interference signals occur, the validity of the result of the analysis of the signals of the at least one sensor (2, 3, 4) is checked prior to the adjustment of the parameters, and the parameters are adjusted as a function of the result of said validity test.

Abstract: An interface component (10) for a universal in-/output module with connection points (X0, M) for field devices includes an analog-to-digital converter (ADC), a digital-to-analog converter (DCA), a power source (25) and a combinational circuit, through which, as required, the analog-to-digital converter (ADC), the digital-to-analog converter (DAC) or the power source (25) are each able to be automatically connected to connection points of the interface component (10). The interface component (10) is able to be connected via a microcomputer to a digital data bus of a control and/or regulation device. A connection point (X0, M) for a field device includes a terminal (X0) able to be configured via the interface component (10) for the field device as an input and/or as an output for bidirectional signals.

Abstract: Method for controlling or regulating a burner (5) to which a defined air quantity (3) and fuel quantity (4) are fed, the exhaust gas (6) formed during the combustion being fed to a sensor (7), and the actual value (8) detected by the sensor being compared with a desired value (9), and a control deviation being obtained from the difference between desired value and actual value, which control deviation is converted into a control variable (11) which is independent of the burner power, characterized in that a power-dependent control variable (15) is generated from the power-independent control variable (11) and from burner-specific parameters (13) which are determined during setting of the burner for the respective power points of the burner, and in that the power-dependent control variable (15) is converted into a control signal (17, 18) in order to influence the ratio of the air quantity (3) to the fuel quantity (4).