Patents by Inventor Ravi Bharathi Krishnan

Ravi Bharathi Krishnan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11940786
    Abstract: A virtual controller is configured to send control commands to an edge controller such as in I/O module that is connected to a building management system component. The IO module is configured to communicate with the virtual controller and to provide local control commands to the building management system component that are based upon the control commands from the virtual controller when communication with the virtual controller is determined by the IO module to be functioning normally and are based upon one or more fail-safe commands generated by the IO module when communication with the virtual controller is determined by the IO module to not be functioning normally.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: March 26, 2024
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Ramprasad Yelchuru
  • Patent number: 11929981
    Abstract: A method of assigning IP addresses to devices of a building control network includes receiving a selection of selected devices of a plurality of devices from a user interface. The selected devices are displayed in a predetermined order on a display. A proposed static IP address for a first device in the predetermined order of the selected devices is received from the user interface. A static IP address is sequentially assigned to each of the selected devices following the first device in accordance with the predetermined order, assuming the subnet mask has been confirmed as valid. The selected devices in the predetermined order along with the assigned static IP addresses for each of the selected devices are displayed on the display. The assigned static IP address for each of the selected devices are downloaded to the corresponding one of the selected devices.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: March 12, 2024
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Lavanya Bhadriraju, Ravi Bharathi Krishnan, John Hutchey, Shyamsundhar Madhusudhan
  • Publication number: 20230350372
    Abstract: 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.
    Type: Application
    Filed: June 26, 2023
    Publication date: November 2, 2023
    Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Ramprasad Yelchuru
  • Patent number: 11782410
    Abstract: A distributed building management system for controlling a building control device of a building includes a virtual controller that is hosted on a computing device and an edge controller that is associated with the building control device. The virtual controller includes a virtual container or a virtual machine that has control logic that generates control commands for controlling the building control device. The edge controller includes control logic that is configured to at least selectively provide closed loop control of one or more functions of the building control device. The edge controller is in operative communication with the virtual controller and is configured to receive and execute the control commands generated by the virtual controller.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: October 10, 2023
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ravi Bharathi Krishnan, Lavanya Bhadriraju, Suresh Vemuri, Suresh Khatri, Anand Ranganathan, Sathish Chidambaram Parameshwaran, Lakshminarayanan Rameya Shrenivas Harijanardhanan, Sugandhika Parida, Vivek Ramachandran, Ramprasad Yelchuru
  • Patent number: 11774127
    Abstract: An HVAC controller provides control values to or more output ports of the HVAC controller. Operation of the HVAC controller is monitored for one or more irregularities. When one or more irregularities in the operation are identified, a hold mode is entered. The hold mode includes holding the one or more current control values on the one or more output ports of the HVAC controller until the one or more irregularities in the operation of the HVAC controller are corrected or a predetermined hold time expires, whichever occurs first. When the one or more irregularities in the operation of the HVAC controller are not corrected before the predetermined hold time expires, a back off mode is entered. The back off mode includes setting each of one or more control values on one or more output ports of the HVAC controller to a corresponding configurable back off value.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: October 3, 2023
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Michael A. Pouchak, Peter Lehman, Lou Jones, Todd D. Kreft, Ravi Bharathi Krishnan, John Hutchey
  • Patent number: 11720074
    Abstract: 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.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: August 8, 2023
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Ramprasad Yelchuru
  • Publication number: 20230160592
    Abstract: A powerful direct digital control (DDC) and integration control platform that is scalable and easy to use and meet building owners and contractors' desires for a highly secure and robust technical solution. One may combine heating, ventilation and air conditioning (HVAC) DDC control with the embedded workstation platform, and DDC controllers with embedded workstation platform software design. An embedded workstation platform event-driven approach (such as a Windows operating system (OS) or Unix OS environment) is not necessarily easily suited to real-time common in HVAC DDC control. The present system may solve an issue of combining high-power event needs for HVAC DDC Controls.
    Type: Application
    Filed: January 10, 2023
    Publication date: May 25, 2023
    Applicant: Honeywell International Inc.
    Inventors: Michael A. Pouchak, Ravi Bharathi Krishnan, Paul Wacker
  • Patent number: 11625018
    Abstract: 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.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: April 11, 2023
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Shriram Sankaran
  • Publication number: 20230082348
    Abstract: A method of assigning IP addresses to devices of a building control network includes receiving a selection of selected devices of a plurality of devices from a user interface. The selected devices are displayed in a predetermined order on a display. A proposed static IP address for a first device in the predetermined order of the selected devices is received from the user interface. A static IP address is sequentially assigned to each of the selected devices following the first device in accordance with the predetermined order, assuming the subnet mask has been confirmed as valid. The selected devices in the predetermined order along with the assigned static IP addresses for each of the selected devices are displayed on the display. The assigned static IP address for each of the selected devices are downloaded to the corresponding one of the selected devices.
    Type: Application
    Filed: September 15, 2021
    Publication date: March 16, 2023
    Inventors: Lavanya Bhadriraju, Ravi Bharathi Krishnan, John Hutchey, Shyamsundhar Madhusudhan
  • Patent number: 11566808
    Abstract: A powerful direct digital control (DDC) and integration control platform that is scalable and easy to use and meet building owners and contractors' desires for a highly secure and robust technical solution. One may combine heating, ventilation and air conditioning (HVAC) DDC control with the embedded workstation platform, and DDC controllers with embedded workstation platform software design. An embedded workstation platform event-driven approach (such as a Windows operating system (OS) or Unix OS environment) is not necessarily easily suited to real-time common in HVAC DDC control. The present system may solve an issue of combining high-power event needs for HVAC DDC Controls.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: January 31, 2023
    Assignee: Honeywell International Inc.
    Inventors: Michael A. Pouchak, Ravi Bharathi Krishnan, Paul Wacker
  • Publication number: 20220397299
    Abstract: An HVAC controller provides control values to or more output ports of the HVAC controller. Operation of the HVAC controller is monitored for one or more irregularities. When one or more irregularities in the operation are identified, a hold mode is entered. The hold mode includes holding the one or more current control values on the one or more output ports of the HVAC controller until the one or more irregularities in the operation of the HVAC controller are corrected or a predetermined hold time expires, whichever occurs first. When the one or more irregularities in the operation of the HVAC controller are not corrected before the predetermined hold time expires, a back off mode is entered. The back off mode includes setting each of one or more control values on one or more output ports of the HVAC controller to a corresponding configurable back off value.
    Type: Application
    Filed: June 15, 2021
    Publication date: December 15, 2022
    Inventors: Michael A. Pouchak, Peter Lehman, Lou Jones, Todd D. Kreft, Ravi Bharathi Krishnan, John Hutchey
  • Publication number: 20220035325
    Abstract: A pseudo determinism control subsystem for event-driven integration framework of a controller system with application relative to various parameters such as, for instance, energy consumption. Pseudo determinism, near real time and/or direct digital control combined with event driven control along with strong security and high speed throughout the controller system.
    Type: Application
    Filed: October 19, 2021
    Publication date: February 3, 2022
    Applicant: Honeywell International Inc.
    Inventors: Paul Wacker, Michael A. Pouchak, Ravi Bharathi Krishnan
  • Publication number: 20210382449
    Abstract: A distributed building management system for controlling a building control device of a building includes a virtual controller that is hosted on a computing device and an edge controller that is associated with the building control device. The virtual controller includes a virtual container or a virtual machine that has control logic that generates control commands for controlling the building control device. The edge controller includes control logic that is configured to at least selectively provide closed loop control of one or more functions of the building control device. The edge controller is in operative communication with the virtual controller and is configured to receive and execute the control commands generated by the virtual controller.
    Type: Application
    Filed: May 18, 2021
    Publication date: December 9, 2021
    Inventors: Ravi Bharathi Krishnan, Lavanya Bhadriraju, Suresh Vemuri, Suresh Khatri, Anand Ranganathan, Sathish Chidambaram Parameshwaran, Lakshminarayanan Rameya Shrenivas, Sugandhika Parida, Vivek Ramachandran, Ramprasad Yelchuru
  • Publication number: 20210382474
    Abstract: A virtual controller is configured to send control commands to an edge controller such as in I/O module that is connected to a building management system component. The IO module is configured to communicate with the virtual controller and to provide local control commands to the building management system component that are based upon the control commands from the virtual controller when communication with the virtual controller is determined by the IO module to be functioning normally and are based upon one or more fail-safe commands generated by the IO module when communication with the virtual controller is determined by the IO module to not be functioning normally.
    Type: Application
    Filed: May 18, 2021
    Publication date: December 9, 2021
    Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Ramprasad Yelchuru
  • Publication number: 20210382452
    Abstract: 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.
    Type: Application
    Filed: May 18, 2021
    Publication date: December 9, 2021
    Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Shriram Sankaran
  • Patent number: 11175640
    Abstract: A pseudo determinism control subsystem for event-driven integration framework of a controller system with application relative to various parameters such as, for instance, energy consumption. Pseudo determinism, near real time and/or direct digital control combined with event driven control along with strong security and high speed throughout the controller system.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: November 16, 2021
    Assignee: Honeywell International Inc.
    Inventors: Paul Wacker, Michael A. Pouchak, Ravi Bharathi Krishnan
  • Publication number: 20210344572
    Abstract: An integrated unitary internet protocol (IP) control system with a rapid spanning tree protocol (RSTP), multi-port high speed switch, supervisor, web display and/or an expansion plant input/output (TO) capabilities. The system may have communication modules associated with encrypted file subsystems integrated with an IO network. A resulting secure IP based communication network may be connected between a software framework and the hardware IO network.
    Type: Application
    Filed: July 6, 2021
    Publication date: November 4, 2021
    Applicant: Honeywell International Inc.
    Inventors: Michael A. Pouchak, Ravi Bharathi Krishnan
  • Patent number: 11125458
    Abstract: A building controller includes a housing, a plurality of inputs, a plurality of outputs and a programmable reset button. A memory stores programmable instructions pertaining to the programmable reset button. A controller is operably coupled to the memory, the plurality of inputs, the plurality of outputs, and the programmable reset button. The controller is configured to receive signals from the plurality of inputs and to provide control signals to the plurality of outputs that are based at least in part on the received signals from the plurality of inputs. The controller is further configured to implement one or more actions that are based upon the programmed instructions pertaining to the programmable reset button that are stored in the memory when the programmable reset button is activated by a user.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: September 21, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Louis A. Ferraro, John Hutchey, Michael A. Pouchak, Ravi Bharathi Krishnan
  • Patent number: 11108649
    Abstract: An integrated unitary internet protocol (IP) control system with a rapid spanning tree protocol (RSTP), multi-port high speed switch, supervisor, web display and/or an expansion plant input/output (IO) capabilities. The system may have communication modules associated with encrypted file subsystems integrated with an IO network. A resulting secure IP based communication network may be connected between a software framework and the hardware IO network.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: August 31, 2021
    Assignee: Honeywell International Inc.
    Inventors: Michael A. Pouchak, Ravi Bharathi Krishnan
  • Publication number: 20200386432
    Abstract: A building controller includes a housing, a plurality of inputs, a plurality of outputs and a programmable reset button. A memory stores programmable instructions pertaining to the programmable reset button. A controller is operably coupled to the memory, the plurality of inputs, the plurality of outputs, and the programmable reset button. The controller is configured to receive signals from the plurality of inputs and to provide control signals to the plurality of outputs that are based at least in part on the received signals from the plurality of inputs. The controller is further configured to implement one or more actions that are based upon the programmed instructions pertaining to the programmable reset button that are stored in the memory when the programmable reset button is activated by a user.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 10, 2020
    Inventors: Louis A. Ferraro, John Hutchey, Michael A. Pouchak, Ravi Bharathi Krishnan