# US 2019/0356513 A1 · Smart gateway devices, systems and methods for providing communication between hvac system networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0356513 A1 - Document ID: US20190356513A1 - Status: Published application - Kind: A1 - Application number: 16/531,249 - Filed: 2019-08-05 - Published: 2019-11-21 - Earliest claimed: 2016-09-09 - Assignees: Johnson Controls Technology Company - Applicants: Johnson Controls Technology Company - Inventors: Shawn D. Schubert; Donald A. Gottschalk; Daniel M. Curtis - Web page: https://patentgrep.com/patent/US20190356513A1 ## CPC - H04L 12/66: Arrangements for connecting between networks having differing types of switching systems, e.g. gateways - H04L 12/2816: {Controlling appliance services of a home automation network by calling their functionalities (arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station; in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q9/00)} - H04L 12/2832: {Interconnection of the control functionalities between home networks (single bridge functionality H04L12/4625)} - H04L 67/08: specially adapted for terminal emulation, e.g. Telnet - H04L 67/12: specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks - H04L 67/53: using third party service providers - H04L 2012/2847: {characterised by the type of home appliance used} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A smart gateway device for providing communications between multiple networks associated with a building management system (BMS). The device includes a first network interface circuit in communication with a first network associated with a building management system (BMS). The device further includes a second network interface circuit in communication with a second network associated with a subsystem of the BMS, wherein the second network is not compatible with the first network. The second network interface circuit is configured to detect a physical device associated with the second network, and to receive a data packet associated with the physical device. The data packet is transmitted to the first network interface circuit. The first network interface circuit is configured to receive the data packet and to generate a virtual device based on the received data packet. The virtual device is configured to represent the physical device on the first network. ## Claims ### Claim 1 A smart gateway device for providing communications between a first network associated with a building management system (BMS) and a second network associated with a subsystem of the BMS, the smart gateway device comprising: one or more processing circuits configured to: discover a physical device on the second network; receive data comprising a device identifier from the physical device; generate a new virtual device responsive to a determination that the device identifier does not match any device identifiers in a virtual device registry, the virtual device registry providing mapping between the new virtual device and the physical device, one or more data points of the new virtual device corresponding to one or more data points of the physical device; receive data values for the one or more data points of the physical device; and update the one or more data points of the new virtual device with the data values obtained from the physical device, the virtual device configured to represent the physical device on the first network. ### Claim 2 (depends on 1) The smart gateway device of claim 1, further comprising a webserver that provides web pages for accessing the first network or the second network to a user device. ### Claim 3 (depends on 1) The smart gateway device of claim 1, the one or more processing circuits further configured to poll the physical device to receive the data comprising the device identifier from the physical device. ### Claim 4 (depends on 1) The smart gateway device of claim 1, the one or more processing circuits further configured to expose the new virtual device to the first network. ### Claim 5 (depends on 1) The smart gateway device of claim 1, further comprising a serial communication driver configured to provide an interface between the physical device and the smart gateway device. ### Claim 6 (depends on 1) The smart gateway device of claim 1, further comprising a wireless radio that allows a user device to access the smart gateway device. ### Claim 7 (depends on 1) The smart gateway device of claim 1, wherein the first network comprises a BACnet network and the second network comprises an H-Link network. ### Claim 8 A method for providing communications between a first network associated with a building management system (BMS) and a second network associated with a subsystem of the BMS, the method comprising: discovering a physical device on the second network; receiving data comprising a device identifier from the physical device; generating a new virtual device responsive to a determination that the device identifier does not match any device identifiers in a virtual device registry, the virtual device registry providing mapping between the new virtual device and the physical device, one or more data points of the new virtual device corresponding to one or more data points of the physical device; receiving data values for the one or more data points of the physical device; and updating the one or more data points of the new virtual device with the data values obtained from the physical device, the virtual device configured to represent the physical device on the first network. ### Claim 9 (depends on 8) The method of claim 8, further comprising providing web pages for accessing the first network or the second network to a user device. ### Claim 10 (depends on 8) The method of claim 8, further comprising polling the physical device to receive the data comprising the device identifier from the physical device. ### Claim 11 (depends on 8) The method of claim 8, further comprising polling the physical device to receive the data values for the one or more data points of the physical device. ### Claim 12 (depends on 11) The method of claim 11, wherein polling the physical device to receive the data values for the one or more data points of the physical device comprises polling the physical device to receive new data values at regular intervals. ### Claim 13 (depends on 8) The method of claim 8, further comprising exposing the new virtual device to the first network. ### Claim 14 (depends on 8) The method of claim 8, wherein the first network comprises a BACnet network and the second network comprises an H-Link network. ### Claim 15 A system for providing communications between a first network associated with a building management system (BMS) and a second network associated with a subsystem of the BMS, the system comprising: one or more computer-readable storage media having instructions stored thereon that, when executed by one or more processors, cause the one or more processors to implement operations comprising: discovering a physical device on the second network; receiving data comprising a device identifier from the physical device; generating a new virtual device responsive to a determination that the device identifier does not match any device identifiers in a virtual device registry, the virtual device registry providing mapping between the new virtual device and the physical device, one or more data points of the new virtual device corresponding to one or more data points of the physical device; receiving data values for the one or more data points of the physical device; and updating the one or more data points of the new virtual device with the data values obtained from the physical device, the virtual device configured to represent the physical device on the first network. ### Claim 16 (depends on 15) The system of claim 15, the operations further comprising providing web pages for accessing the first network or the second network to a user device. ### Claim 17 (depends on 15) The system of claim 15, the operations further comprising polling the physical device to receive the data comprising the device identifier from the physical device. ### Claim 18 (depends on 15) The system of claim 15, the operations further comprising polling the physical device to receive the data values for the one or more data points of the physical device. ### Claim 19 (depends on 18) The system of claim 18, wherein polling the physical device to receive the data values for the one or more data points of the physical device comprises polling the physical device to receive new data values at regular intervals. ### Claim 20 (depends on 15) The system of claim 15, the operations further comprising exposing the new virtual device to the first network.