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).
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Publication number: 20250063467Abstract: A building controller stores a default configuration for a wireless interface. The wireless interface is configured with the default configuration and the building controller establishes a wireless network connection with a configuration tool via a default wireless access point. The building controller receives an updated configuration from the configuration tool. After receiving the updated configuration, the building controller configures the wireless interface with the updated configuration, and terminates the wireless network connection with the default wireless access point. With the wireless interface configured with the updated wireless configuration, the building controller attempts to establish a wireless network connection via the wireless interface with a remote device using the updated wireless configuration.Type: ApplicationFiled: August 2, 2024Publication date: February 20, 2025Inventors: Guy Zebrick, Rajat Saha, Ravi Bharathi Krishnan, Selvakumar P, Shyamsundhar Madhusudhan, Torsha Das, Vinoth Kumar Dellii
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Publication number: 20250063088Abstract: Information may be downloaded to one or more of a plurality of building control devices over a network. A method includes identifying IDs of each of the plurality of building control devices to receive the downloaded information. The information that is to be downloaded is divided into a number of packets. Each of the packets are sequentially broadcast over the network, wherein the packets if received collectively download the information to each of the plurality of building control devices. Which, if any, of the plurality of building control devices that did not acknowledge receiving one or more of the packets, is identified. When one or more of the plurality of building control devices did not acknowledge receiving one or more of the packets, one or more unicast messages are sent over the network addressed to those building control devices.Type: ApplicationFiled: August 16, 2023Publication date: February 20, 2025Inventors: Ankita Kulkarni, Lavanya Bhadriraju, Rajat Saha, Ravi Bharathi Krishnan, Shyamsundhar Madhusudhan
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Publication number: 20250063039Abstract: Batch configuration of digital certificates for building control devices that operate on a secure building control network using Certificate Based Authentication (CBA). A plurality of digital certificate files may be stored, wherein each of the digital certificate files includes a digital certificate and has a file name that includes a pattern that can be matched to a unique identifier of a respective one of the building control devices. A matching one of the digital certificate files may be automatically identified for each of the building control devices by matching the pattern in the file name of the matching digital certificate file with the unique identifier of the respective building control device. The matching digital certificate file may be batch uploaded to the respective building control device for subsequent use by the respective building control device when communicating over the building control network.Type: ApplicationFiled: August 2, 2024Publication date: February 20, 2025Inventors: Ravi Bharathi Krishnan, Shyamsundhar Madhusudhan
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Patent number: 12001179Abstract: 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: GrantFiled: October 19, 2021Date of Patent: June 4, 2024Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Paul Wacker, Michael A. Pouchak, Ravi Bharathi Krishnan
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Patent number: 11940786Abstract: 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: GrantFiled: May 18, 2021Date of Patent: March 26, 2024Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Ramprasad Yelchuru
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Patent number: 11929981Abstract: 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: GrantFiled: September 15, 2021Date of Patent: March 12, 2024Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Lavanya Bhadriraju, Ravi Bharathi Krishnan, John Hutchey, Shyamsundhar Madhusudhan
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Publication number: 20230350372Abstract: 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: ApplicationFiled: June 26, 2023Publication date: November 2, 2023Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Ramprasad Yelchuru
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Patent number: 11782410Abstract: 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: GrantFiled: May 18, 2021Date of Patent: October 10, 2023Assignee: 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
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Patent number: 11774127Abstract: 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: GrantFiled: June 15, 2021Date of Patent: October 3, 2023Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Michael A. Pouchak, Peter Lehman, Lou Jones, Todd D. Kreft, Ravi Bharathi Krishnan, John Hutchey
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Patent number: 11720074Abstract: 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: GrantFiled: May 18, 2021Date of Patent: August 8, 2023Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Ramprasad Yelchuru
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Publication number: 20230160592Abstract: 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: ApplicationFiled: January 10, 2023Publication date: May 25, 2023Applicant: Honeywell International Inc.Inventors: Michael A. Pouchak, Ravi Bharathi Krishnan, Paul Wacker
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Patent number: 11625018Abstract: 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: GrantFiled: May 18, 2021Date of Patent: April 11, 2023Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Shriram Sankaran
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Publication number: 20230082348Abstract: 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: ApplicationFiled: September 15, 2021Publication date: March 16, 2023Inventors: Lavanya Bhadriraju, Ravi Bharathi Krishnan, John Hutchey, Shyamsundhar Madhusudhan
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Patent number: 11566808Abstract: 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: GrantFiled: June 4, 2020Date of Patent: January 31, 2023Assignee: Honeywell International Inc.Inventors: Michael A. Pouchak, Ravi Bharathi Krishnan, Paul Wacker
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Publication number: 20220397299Abstract: 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: ApplicationFiled: June 15, 2021Publication date: December 15, 2022Inventors: Michael A. Pouchak, Peter Lehman, Lou Jones, Todd D. Kreft, Ravi Bharathi Krishnan, John Hutchey
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Publication number: 20220035325Abstract: 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: ApplicationFiled: October 19, 2021Publication date: February 3, 2022Applicant: Honeywell International Inc.Inventors: Paul Wacker, Michael A. Pouchak, Ravi Bharathi Krishnan
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Publication number: 20210382452Abstract: 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: ApplicationFiled: May 18, 2021Publication date: December 9, 2021Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Shriram Sankaran
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Publication number: 20210382474Abstract: 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: ApplicationFiled: May 18, 2021Publication date: December 9, 2021Inventors: Ravi Bharathi Krishnan, Suresh Vemuri, Vivek Ramachandran, Ramprasad Yelchuru
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Publication number: 20210382449Abstract: 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: ApplicationFiled: May 18, 2021Publication date: December 9, 2021Inventors: Ravi Bharathi Krishnan, Lavanya Bhadriraju, Suresh Vemuri, Suresh Khatri, Anand Ranganathan, Sathish Chidambaram Parameshwaran, Lakshminarayanan Rameya Shrenivas, Sugandhika Parida, Vivek Ramachandran, Ramprasad Yelchuru
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Patent number: 11175640Abstract: 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: GrantFiled: June 10, 2019Date of Patent: November 16, 2021Assignee: Honeywell International Inc.Inventors: Paul Wacker, Michael A. Pouchak, Ravi Bharathi Krishnan