Abstract: A brokering system used in distributed building controls provides multiple tiers of storage. Data can be requested at any time during the processing of new data received from a building device. Complex event processors, low latency control, and/or display interfaces may request and be provided data from memory (e.g., tier one storage) of a message broker. Digital twins and/or optimization algorithms may wait until data is stored to local disk before information is obtained. Other applications may wait until data is saved in the remote database before using the data to perform calculations. Data may be compressed and stored in timeseries that are accessed by a single requested to the message broker.

Abstract: A building management system for generating a building model for a building and operating building equipment of the building based on the building model. The system includes a processing circuit configured to receive a context, wherein the context includes metadata defining the building model for the building and generate a building model editor interface for viewing and editing the received context, wherein the building model interface includes building elements for the building model, wherein the building elements are based on the received context and represent the building equipment. The processing circuit is configured to receive user edits of the context via the building model interface, wherein the user edits include edits to the building elements, generate an updated context based on the user edits of the context, and deploy the updated context to control environmental conditions of the building with the building equipment based on the updated context.

Abstract: Systems and methods are disclosed that create a deployment package for commissioning of a building control system. The deployment package may include a series of automated validation sequences that ensure each equipment and/or device is properly configured and installed. A validation sequence is performed, and the behavior is compared to expected behavior for the sequence. A brokering architecture facilitates the commissioning by providing a fixed schema to all applications communicating over the message bus, thus standardizing the deployment package and the validation sequences. Correlations between data may be found and used when data is missing in the same or similar equipment.

Abstract: A controller for heating, ventilation, or air conditioning (HVAC) equipment includes a communications interface configured to communicate with first HVAC equipment and second HVAC equipment and a processing circuit communicably coupled to the communications interface. The processing circuit is configured to detect a staging event for the first HVAC equipment occurring at a first time, obtain a delay time based on an estimated amount of time required to reach steady state after the staging event for the first HVAC equipment occurs at the first time, determine whether the delay time has elapsed since the staging event for the first HVAC equipment has occurred, and prevent the second HVAC equipment from staging in response to a determination that the delay time has not elapsed since the staging event for the first HVAC equipment has occurred.

Abstract: One or more message brokers configured to communicate over a message bus and provide one or more features and the one or more features are executed in response to a field in a first message communicated to a message broker of the one or more message brokers. The operations also include creating a second set of the one or more message brokers in a second set of isolated compute environments. The second set of the one or more message brokers capable of performing an additional feature in addition to the one or more features. The communications over the message bus include sending a structured data format. The second set of one or more message brokers are configured to execute extension instructions related to the additional feature in response to a second message containing a specified field in the structured data format. The second set of one or more message brokers are deployed to the message bus while the first set of one or more message brokers communicates over the message bus.

Abstract: A brokering architecture is disclosed. The brokering architecture focuses on storing changes to the building system. Measurements are quantized to an integer representation and encoded so that time series data is stored in a series of changes of value. The encoded timeseries may be compressed using compression schemes that advantageously make use of small changes between adjacent stored values of the timeseries. Compressed timeseries values allow more data to be stored in RAM or other short-term storage and provide a more responsive system to control physical systems like buildings. Timeseries compression may be provided through extensions accessed through a structured data format on the message bus. Extensions can cause the execution of certain instructions based on the fields in the structured data and may be used to provide functionality in addition to timeseries compression including BACnet communications, predictions, and simulations.

Abstract: A distributed control system is provided by a brokering architecture. Message brokers running within multiple compute environments coordinate communication and data storage for control applications. Control applications run in one compute environment send the results to the message broker which may store the data for future calculations and/or send the data to a remote data base. Control applications may be state-less and store all information in the message brokers. Data from one environment may be sent over a message bus to other environments to be used as inputs to calculations. The distributed control system is used to provide responsive control to various building equipment.

Abstract: Systems and methods are disclosed that create a deployment package for commissioning of a building control system. The deployment package may include a series of automated validation sequences that ensure each equipment and/or device is properly configured and installed. A validation sequence is performed, and the behavior is compared to expected behavior for the sequence. A brokering architecture facilitates the commissioning by providing a fixed schema to all applications communicating over the message bus, thus standardizing the deployment package and the validation sequences. Correlations between data may be found and used when data is missing in the same or similar equipment.

Abstract: A brokering system used in distributed building controls provides multiple tiers of storage. Data can be requested at any time during the processing of new data received from a building device. Complex event processors, low latency control, and/or display interfaces may request and be provided data from memory (e.g., tier one storage) of a message broker. Digital twins and/or optimization algorithms may wait until data is stored to local disk before information is obtained. Other applications may wait until data is saved in the remote database before using the data to perform calculations. Data may be compressed and stored in timeseries that are accessed by a single requested to the message broker.

Abstract: A distributed control system with bump-less failover and replay capability is disclosed. The distributed control system stores the state of each control application in a separate storage system. Each time the control applications runs it can store the results of the calculations required for a subsequent calculation. When a compute environment running the control applications fails another environment can begin performing the same operations. Replay capability is provided to facilitate the investigation of the control application's execution.

Abstract: A brokering architecture is disclosed. The brokering architecture focuses on storing changes to the building system. Measurements are quantized to an integer representation and encoded so that time series data is stored in a series of changes of value. The encoded timeseries may be compressed using compression schemes that advantageously make use of small changes between adjacent stored values of the timeseries. Compressed timeseries values allow more data to be stored in RAM or other short-term storage and provide a more responsive system to control physical systems like buildings. Timeseries compression may be provided through extensions accessed through a structured data format on the message bus. Extensions can cause the execution of certain instructions based on the fields in the structured data and may be used to provide functionality in addition to timeseries compression including BACnet communications, predictions, and simulations.

Abstract: A controller for heating, ventilation, or air conditioning (HVAC) equipment includes a communications interface configured to communicate with first HVAC equipment and second HVAC equipment and a processing circuit communicably coupled to the communications interface. The processing circuit is configured to detect a staging event for the first HVAC equipment occurring at a first time, obtain a delay time based on an estimated amount of time required to reach steady state after the staging event for the first HVAC equipment occurs at the first time, determine whether the delay time has elapsed since the staging event for the first HVAC equipment has occurred, and prevent the second HVAC equipment from staging in response to a determination that the delay time has not elapsed since the staging event for the first HVAC equipment has occurred.

Abstract: A controller for heating, ventilation, or air conditioning (HVAC) equipment includes a communications interface configured to communicate with first HVAC equipment and second HVAC equipment and a processing circuit communicably coupled to the communications interface. The processing circuit is configured to detect a staging event for the first HVAC equipment occurring at a first time, obtain a delay time based on an estimated amount of time required to reach steady state after the staging event for the first HVAC equipment occurs at the first time, determine whether the delay time has elapsed since the staging event for the first HVAC equipment has occurred, and prevent the second HVAC equipment from staging in response to a determination that the delay time has not elapsed since the staging event for the first HVAC equipment has occurred.

Abstract: Systems and methods for modeling and controlling entities of a building system are provided. An exemplary method includes comparing an input indicating a new entity or connection between entities of a building system to a data model for the building system to determine whether the new entity or connection is represented in the data model, extending the data model to define the new entity or connection in response to determining that the new entity or connection is not represented in the data model, and using the data model with the new entity or connection in a control strategy to generate control decisions for the entities of the building system.

Abstract: A controller for heating, ventilation, or air conditioning (HVAC) equipment includes a communications interface configured to communicate with first HVAC equipment and second HVAC equipment and a processing circuit communicably coupled to the communications interface. The processing circuit is configured to detect a staging event for the first HVAC equipment occurring at a first time, obtain a delay time based on an estimated amount of time required to reach steady state after the staging event for the first HVAC equipment occurs at the first time, determine whether the delay time has elapsed since the staging event for the first HVAC equipment has occurred, and prevent the second HVAC equipment from staging in response to a determination that the delay time has not elapsed since the staging event for the first HVAC equipment has occurred.

Abstract: Systems and methods for modeling and controlling entities of a building system are provided. An exemplary method includes comparing an input indicating a new entity or connection between entities of a building system to a data model for the building system to determine whether the new entity or connection is represented in the data model, extending the data model to define the new entity or connection in response to determining that the new entity or connection is not represented in the data model, and using the data model with the new entity or connection in a control strategy to generate control decisions for the entities of the building system.

Abstract: A controller for heating, ventilation, or air conditioning (HVAC) equipment includes a communications interface configured to communicate with first HVAC equipment and second HVAC equipment and a processing circuit communicably coupled to the communications interface. The processing circuit is configured to detect a staging event for the first HVAC equipment occurring at a first time, obtain a delay time based on an estimated amount of time required to reach steady state after the staging event for the first HVAC equipment occurs at the first time, determine whether the delay time has elapsed since the staging event for the first HVAC equipment has occurred, and prevent the second HVAC equipment from staging in response to a determination that the delay time has not elapsed since the staging event for the first HVAC equipment has occurred.

Abstract: Systems and methods for implementing an economic strategy such as a model predictive control (EMPC) strategy. An EMPC tool is configured to present to receive sinks and connections between central plant equipment. The EMPC tool also includes a data model extender configured to extend a data model to define new entities and/or relationships. The EMPC tool also includes a high level EMPC algorithm configured to generate an optimization problem and an asset allocator configured to solve the resource optimization problem in order to determine optimal control decisions used to operate the central plant.

Abstract: A controller for heating, ventilation, or air conditioning (HVAC) equipment includes a communications interface configured to communicate with first HVAC equipment and second HVAC equipment and a processing circuit communicably coupled to the communications interface. The processing circuit is configured to detect a staging event for the first HVAC equipment occurring at a first time, obtain a delay time based on an estimated amount of time required to reach steady state after the staging event for the first HVAC equipment occurs at the first time, determine whether the delay time has elapsed since the staging event for the first HVAC equipment has occurred, and prevent the second HVAC equipment from staging in response to a determination that the delay time has not elapsed since the staging event for the first HVAC equipment has occurred.

Abstract: A controller for multiple groups of equipment detects a staging event for a first group of equipment and determines when the staging event occurs. The controller determines whether a predetermined time period has elapsed since the staging event for the first group of equipment has occurred and prevents a second group of equipment from staging in response to a determination that the predetermined time period has not elapsed since the staging event for the first group of equipment has occurred. Preventing the second group of equipment from staging reduces peak energy consumption during the predetermined time period and reduces a demand charge based on the peak energy consumption.