Abstract: A masterless building device system for controlling an environmental condition of a building, includes a first building device and a second building device. The first building device includes a first processing circuit configured to determine, via a first sensor of the first building device, a first environmental condition value of the environmental condition. The first processing circuit is configured to broadcast the first environmental condition value to a second building device via a network. The first processing circuit is configured to receive, via the network, a second environmental condition value broadcast by the second building device, generate a calculated environmental condition value based on the first environmental condition value and the second environmental condition value, and control the environmental condition based on the calculated environmental condition value.

Abstract: A building management system includes building equipment, a metric generation system, and a visualization engine. The building equipment is configured to generate data samples. The metric generation system is configured to collect the data samples and generate key performance indicators. The visualization engine is configured to create a scorecard that displays the key performance indicators. The scorecard comprises a building energy overview widget that displays total consumption of a building, a consumption by space widget that displays consumption of a plurality of subspaces of the building, and a consumption by commodity widget that displays consumption of the building categorized by commodity. In some embodiments, the scorecard also includes an energy density by space widget that displays consumption per unit area per day for the subspaces of the building.

Abstract: An induction motor for a chiller assembly is provided. The induction motor includes a housing and a stator having a cylindrical shape with a first end, a second end, an interior surface, and an exterior surface. The cylindrical shape defines a central axis. The induction motor further includes a rotor and a shaft with a first end and a second end. The rotor and the shaft are configured to rotate within the interior cylindrical surface of the stator about the central axis. The induction motor additionally includes a first bearing assembly located proximate the first end of the shaft, a second bearing assembly located proximate the second end of the shaft, a first nozzle ring and a second nozzle ring. The first and second nozzle rings are configured to direct a cooling fluid between the interior surface of the stator and the rotor.

Abstract: A processor is configured to receive an electronic item comprising an object signature and corresponding to a building infrastructure item, such as space, equipment, monitoring point, etc. The processor is configured to validate the object signature, including determining, based on the object signature, a data source associated with the building infrastructure item. For each of the plurality of data objects from the data source, where each data object corresponds to a particular installation of the building infrastructure item, the processor is configured to determine a signature suffix associated with a current version and/or current configuration of the particular installation. The processor is configured to generate a validated object signature, including appending the signature suffix to the object signature. The processor is configured to identify a target computing system and transmit the validated object signature to the target computing system (e.g.

Abstract: A housing for an electronic device includes a rear wall with an exterior surface, a top wall, a ledge with an exterior surface, and an air outlet formed between the top wall and the ledge. The ledge is positioned below the top wall. The exterior surface of the ledge is positioned at an exterior angle less than 90° relative to the exterior surface of the rear wall.

Abstract: A configuration management system for a heating, ventilation, and air conditioning (HVAC) system includes a controller having a memory storing a baseline configuration of the HVAC system. The baseline configuration of the HVAC system indicates that the HVAC system is an air conditioning system or a heat pump system. Additionally, the controller is configured to determine a current configuration of the HVAC system based on detecting whether a reversing valve is present in the HVAC system. The current configuration of the HVAC system includes an air conditioning system configuration or a heat pump system configuration. The controller is also configured to perform a control action in response to determining that the current configuration is different than the baseline configuration.

Abstract: A building management system includes a first device of building equipment, a camera, and a user interface system. The camera collects a first camera feed displaying an image of the first device of building equipment. The user interface system is configured to receive the camera feed displaying the image of the first device. The user interface system is also configured to generate an augmented user interface by overlaying onto the camera feed a first selectable option associated with a first command to be performed on the first device. The user interface system is also configured to perform the first command on the first device in response to a user selecting the first selectable option via the augmented user interface.

Abstract: An HVAC system includes, an electronic expansion valve (EEV), and a controller in communication with the EEV. The controller determines a minimum EEV setpoint position value based on a comparison of a superheat error value to a setpoint error threshold. The controller determines a maximum EEV setpoint position value based on a comparison of a second superheat error value to a second setpoint error threshold. The controller calculates an average setpoint value based on the maximum EEV setpoint position value and the minimum EEV setpoint position value. The controller configures the EEV to a position corresponding to the average setpoint value and operate the EEV for a predetermined amount of time. The controller operates the EEV according to a PID algorithm.

Abstract: A system for monetizing deployment of building management software configured to operate an HVAC device includes one or more processors coupled to non-transitory memory. The one or more processors are configured to create a service task for a field technician including information identifying the building management software to be installed on an end device. The one or more processors are further configured to generate a unique product key and attach the unique product key to the service task, transmit the service task to a field technician platform configured to be accessed by the field technician, validate bound data received from the field technician platform, the bound data comprising end device fingerprint information and the unique product key. The one or more processors are further configured to generate a license file configured to complete installation of the building management software.

Abstract: A method for executing computations in parallel for a building management system of a building includes receiving a computing job request to determine values for one or more particular properties, receiving a property model indicating dependencies between a plurality of properties, the plurality of properties including the one or more particular properties, wherein the plurality of properties include building data for the building, and generating one or more computing threads based on the property model, wherein each computing thread includes a sequence of computations for determining values for the plurality of properties. The method further includes executing the computing threads in parallel to determine the values for the particular properties.

Abstract: A building system for operating a building and managing private building information includes a processing circuit configured to receive a request for information for a building entity of a building entity database. The processing circuit is configured to select one of the mask templates from the entity database based on access values associated with the requesting device and a relational link between the building entity and the mask templates, retrieve private information for the building entity in response to a reception of the request for the information, and generate a masked information data structure based on the private information and the one of the mask templates.

Abstract: A space controller includes processors and non-transitory computer-readable media storing instructions that, when executed by the processors, cause the processors to perform operations. The operations include obtaining a power consumption model that defines a change in power consumption of HVAC equipment that operate to provide heating or cooling to a space as a function of a change in temperature setpoint for the space and model parameters that represent thermal properties of the space. The operations include estimating values of the model parameters based on training data including values of the power consumption of the HVAC equipment, the temperature setpoint for the space, and outdoor air temperature at multiple times within a training period. The operations include using the power consumption model and the values of the model parameters to predict a change in the power consumption of the HVAC equipment expected to result from a change in the temperature setpoint.

Abstract: A method for managing a retail environment includes identifying a plurality of shopping carts traveling through an aisle of a retail environment; retrieving information of respective times of the plurality of shopping carts entering the aisle, and respective times of the plurality of shopping carts leaving the aisle; associating the plurality of shopping carts with respective transaction identifications; generating a database comprising the transaction identifications and respective items, the items of each transaction identification comprising at least a dwell time class, respective purchase states of one or more products deployed along the aisle, and respective query states of the one or more product; calculating a respective product conversion rate of each of the transaction identifications based on the database; and providing an aisle product conversion rate for managing product placements in the retail environment based on the respective product conversion rate of each of the transaction identifications.

Abstract: An HVAC system for a building includes a heat exchanger configured to transfer heat from a chilled fluid circuit to a cooling tower circuit to provide cooling for a chilled fluid in the chilled fluid circuit, a cooling tower configured to remove heat from the cooling tower circuit to provide cooling for a coolant in the cooling tower circuit, one or more pumps configured to circulate the coolant between the cooling tower and the heat exchanger via the cooling tower circuit, and a free cooling controller. The controller is configured to determine an optimal flowrate of the coolant in the cooling tower circuit, determine an optimal flowrate of air through the cooling tower, and operate the one or more pumps and the cooling tower to achieve the optimal flowrate of the coolant in the cooling tower circuit and the optimal flowrate of the air through the cooling tower.

Abstract: Systems and methods for identifying at risk building sites. The security system includes a processing circuit configured to receive building security data from the plurality of building sites, the building security data indicating one or more vulnerability time periods for each of the plurality of building sites and determine an average vulnerability time period associated with each of the plurality building sites based on the one or more vulnerability time periods. The processing circuit can also be configured to determine a tunable threshold associated with the average vulnerability time period; determine whether each of the plurality of building sites are at risk by determining whether a current vulnerability time period for each building site is greater than the tunable threshold associated with the average vulnerability time period; and generate a report indicating one or more of the plurality of building sites that are at risk.

Abstract: Systems and methods for reducing false alarms of a building are disclosed. The system includes a processing circuit configured to receive building security data of the building, the building security data comprising one or more events and identify a plurality of satisfied rules of a plurality of rules based on the one or more events, wherein each of the plurality of rules is associated with a particular sequence of one or more particular events. The processing circuit is also configured to select one satisfied rule of the plurality of satisfied rules based on a rule hierarchy, wherein the rule hierarchy indicates a classification level of each of the plurality of satisfied rules and generate a recommendation for reducing a false alarm associated with the one satisfied rule, wherein the recommendation comprises an indication of a root cause of the false alarm.

Abstract: In one embodiment of the present disclosure, a heating, ventilating, and air conditioning (HVAC) system includes a refrigerant circuit configured to flow a refrigerant. The refrigerant circuit includes a compressor configured to compress the refrigerant, a condenser configured to receive the refrigerant from the compressor and to condense the refrigerant, a valve configured to receive a first portion of the refrigerant from the condenser and to decrease a pressure of the first portion of the refrigerant, and an evaporator configured to receive the first portion of the refrigerant from the condenser and configured to evaporate the first portion of the refrigerant. The refrigerant circuit also includes a refrigerant sub-circuit configured to receive a second portion of the refrigerant from the condenser and to convert thermal energy of the second portion of the refrigerant to electrical energy.

Abstract: In an embodiment of the present disclosure, a method for determining power consumption of a unit of a heating, ventilating, and air conditioning (HVAC) system includes providing conditioned air to the unit from an HVAC unit of the HVAC system. The method also includes receiving power data indicative of a total power consumed by the HVAC unit, receiving airflow data indicative of a rate of the conditioned air received by the unit from the HVAC unit, determining a power consumption of the unit based on the power data and the airflow data, and outputting the power consumption of the unit.

Abstract: A model predictive maintenance system for building equipment that performs operations including obtaining an objective function defining a cost of operating and performing maintenance on the equipment as a function of operating and maintenance decisions for time steps within a time period of a life cycle horizon and including performing a first computation of the objective function under a first scenario where maintenance is performed on the equipment during the period, a result of the first computation indicating a first cost. The operations include performing a second computation under a second scenario in which maintenance is not performed during the period, a result indicating a second cost. The operations include initiating an automated action to perform maintenance on the equipment in accordance with decisions defined by the first scenario if the first cost is less than or equal to the second cost.

Abstract: A method includes measuring a plurality of temperatures corresponding to a plurality of servers located in a data center, determining a subset of the plurality of servers as high-temperature servers based on the plurality of temperatures, and reassigning tasks from at least a portion of the subset of the plurality of servers to one or more other servers of the plurality of servers.