Honeywell International Inc.

Suresh Vemuri

Paul C Wacker

Gutha Stalin Sanghamitra

Ravi Bharathi Krishnan

Vivek Ramachandran

Michael Andrew Pouchak

Todd D Kreft

Ramprasad Yelchuru

Shriram Sankaran

Louis A Ferraro

A system for light commercial building solutions (LCBS). Solutions and other systems may incorporate lightweight alerting service, auto-adjustment of gateway poll rates based on the needs of various consuming applications, detecting loss of space comfort control in a heating, ventilation and air conditioning (HVAC) system, HVAC capacity loss alerting using relative degree days and accumulated stage run time with operational equivalency checks, and HVAC alerting for loss of heat or cool capacity using delta temperature and dependent system properties. Also, incorporated may be triggering s subset of analytics by automatically inferring HVAC equipment details from controller configuration details, ensuring reliability of analytics by retaining logical continuity of HVAC equipment operational data even when controllers and other parts of the system are replaced, and an LCBS gateway with workflow and mechanisms to associate to a contractor account.

System for auto-adjustment of gateway poll rates

A control system for controlling operation of a plurality of building control devices includes a pool of virtual controllers that are hosted on one or more computing device and are configured to provide control commands for controlling one or more associate building control devices of the plurality of building control devices. Each of a plurality of edge controllers are associated with at least one building control device and are configured to receive and execute control commands from one or more of the virtual controllers to control the associated one or more building control devices. An orchestrator is configured to monitor one or more operational characteristics of each of the virtual controllers and to modify one or more aspects of the pool of virtual controllers when one or more of the operational characteristics of one or more of the virtual controllers meets predetermined characteristics.

Method and system for managing virtual controllers in a building management system

A distributed building management system includes a virtual controller and an edge controller for controlling a building control device using a distributed control logic that is distributed between the virtual controller and the edge controller. A programming tool displays a graphical representation of the distributed control logic and identifies which portions of the distributed control logic are considered critical and which portions of the distributed control logic are considered not critical to a fail-safe operation of the building control device should the edge controller stop receiving control commands from the virtual controller. The portions of the distributed control logic that are identified as being critical are assigned to the edge controller for execution and the portions of the distributed control logic that are not identified as being critical are assigned to the virtual controller for execution.

Method and system for configuring virtual controllers in a building management system

A building controller includes a plurality of inputs, a plurality of outputs and a plurality of manually-actuated HAND-OFF-AUTO (HOA) switches each having a HAND (H) position, an OFF (O) position and an AUTO (A) position, wherein each of the plurality of HOA switches is associated with but not directly coupled to a corresponding output of the plurality of outputs. A controller is operatively coupled to the plurality of inputs, the plurality of outputs, and the plurality of HOA switches and is configured to recognize a position of each of the plurality of HOA switches, and to control one or more of the plurality of outputs in accordance with the recognized position of each of the plurality of HOA switches as well as a plurality of programmed configuration settings associated with the plurality of HOA switches.

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Bengaluru, India

Suresh Vemuri