# US 10,375,625 B1 · System and method for triangulating location of wireless process automation transmitter for use by smart glass device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,375,625 B1 - Document ID: US10375625B1 - Status: Granted - Kind: B1 - Application number: 16/198,091 - Filed: 2018-11-21 - Granted: 2019-08-06 - Earliest claimed: 2018-11-21 - Assignees: Endress + Hauser GmbH + Co. KG - Applicants: Endress+Hauser SE+Co. KG - Inventors: Eric Birgel; Tareq Al Qaisi; Gautham Karnik; Matthew Krygier - Web page: https://patentgrep.com/patent/US10375625B1 ## CPC - H04W 48/10: using broadcasted information - G01S 5/02213: {Receivers arranged in a network for determining the position of a transmitter} - G01S 5/06: Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements (G01S5/12 takes precedence) - G06F 3/011: {Arrangements for interaction with the human body, e.g. for user immersion in virtual reality (blind teaching G09B21/00)} - G01S 5/0284: {Relative positioning} - G01S 2205/01: specially adapted for specific applications - H04W 4/026: {using orientation information, e.g. compass} - H04W 4/027: {using movement velocity, acceleration information} - H04W 4/80: Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication - H04W 48/16: Discovering, processing access restriction or access information - H04W 48/20: Selecting an access point - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks - H04W 88/18: Service support devices; Network management devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A system for triangulating a location of a wireless process automation transmitter for use by a smart glass device is provided. A wireless process automation transmitter transmits a join request signal, and a plurality of network receivers receive the join request signal and transmit time of arrival information to a network manager. The network manager uses the information, including network receiver information and corresponding location information, to triangulate a location of the wireless process automation transmitter. A smart glass device location is triangulated in a similar manner but may also use the wireless process automation transmitter to receive a join request signal and transmit time of arrival information to the network manager. With the location information of both devices, along with an orientation angle of the smart glass device, the network manager determines if the wireless process automation transmitter is in a field of view of the smart glass device. ## Claims ### Claim 1 A system for triangulating a location of a wireless process automation transmitter for use by a smart glass device, comprising: a network manager in communication with a database of network receiver information and corresponding location information; a first wireless process automation transmitter configured to transmit a first join request signal; a plurality of network receivers configured to receive the first join request signal and transmit a first set of time of arrival information to the network manager; the network manager configured to triangulate a location of the first wireless process automation transmitter based on the location information of the network receivers and the first set of time of arrival information; the smart glass device configured to transmit a second join request signal; the plurality of network receivers configured to receive the second join request signal and transmit a second set of time of arrival information to the network manager; the network manager configured to triangulate a location of the smart glass device based on the location information of the network receivers and the second set of time of arrival information; the smart glass device configured to transmit an orientation angle of the smart glass device to the network manager; the network manager configured to determine if the first wireless process automation transmitter is in a field of view of the smart glass device based on the location of the first wireless process automation transmitter, the location of the smart glass device, and the orientation angle; and a display of the smart glass device configured to display information corresponding to the first wireless process automation transmitter when the first wireless process automation transmitter is in the field of view of the smart glass device. ### Claim 2 (depends on 1) The system of claim 1, further comprising: a second wireless process automation transmitter; wherein the network manager is configured to triangulate a location of the second wireless process automation transmitter based on the location information of the receivers and the location of the first wireless process automation transmitter. ### Claim 3 (depends on 2) The system of claim 2, wherein the network manager is configured to reconfigure the first wireless process automation transmitter to a receive mode when the second wireless process automation transmitter transmits a join request signal. ### Claim 4 (depends on 3) The system of claim 3, wherein the network manager is configured to reconfigure the first wireless process automation transmitter to a report sensor value mode after the location of the second wireless process automation transmitter is determined. ### Claim 5 (depends on 1) The system of claim 1, further comprising: a plurality of wireless process automation transmitters; wherein the network manager is configured to triangulate locations of the plurality of wireless process automation transmitters and transmit information to the smart glass device corresponding to each of the plurality of wireless process automation transmitters in the field of view of the smart glass device. ### Claim 6 (depends on 5) The system of claim 5, wherein the network manager is configured to update the locations of the plurality of wireless process automation transmitters and transmit information to the smart glass device at a predetermined frequency. ### Claim 7 (depends on 1) The system of claim 1, wherein the network manager is configured to update the location of the smart glass device at a predetermined frequency. ### Claim 8 (depends on 7) The system of claim 7, wherein the network manager is configured to determine if the first wireless process automation transmitter is in the field of view of the smart glass device at a predetermined frequency. ### Claim 9 (depends on 1) The system of claim 1, wherein the smart glass device is configured to determine the orientation angle using an accelerometer of the smart glass device. ### Claim 10 (depends on 1) The system of claim 1, wherein the first wireless process automation transmitter is at least one of a pressure sensor, a level sensor, and a flow sensor. ### Claim 11 A method for triangulating a location of a wireless process automation transmitter for use by a smart glass device, comprising steps of: storing receiver information, including location information, for a plurality of receivers in a network; transmitting a first join request signal from a wireless process automation transmitter; receiving the first join request signal at the receivers and transmitting a first set of time of arrival information to the network manager; triangulating a location of the wireless process automation transmitter by the network manager based on the location information of the receivers and the first set of time of arrival information; transmitting a second join request signal from a smart glass device; receiving the second join request signal at the receivers and transmitting a second set of time of arrival information to the network manager; triangulating a location of the smart glass device based on the location information of the receivers and the second set of time of arrival information; transmitting an orientation angle of the smart glass device from the smart glass device to the network manager; determining if the wireless process automation transmitter is in a field of view of the smart glass device based on the location of the wireless process automation transmitter, the location of the smart glass device, and the orientation angle; and displaying information corresponding to the wireless process automation transmitter on a display of the smart glass device if the wireless process automation transmitter is in the field of view of the smart glass device. ### Claim 12 (depends on 11) The method of claim 11, further comprising triangulating a location of a second wireless process automation transmitter based on the location information of the receivers and the location of the first wireless process automation transmitter. ### Claim 13 (depends on 12) The method of claim 12, further comprising reconfiguring the first wireless process automation transmitter to a receive mode when the second wireless process automation transmitter transmits a join request signal. ### Claim 14 (depends on 13) The method of claim 13, further comprising reconfiguring the first wireless process automation transmitter to a report sensor value mode after the location of the second wireless process automation transmitter is determined. ### Claim 15 (depends on 11) The method of claim 11, further comprising triangulating locations of the plurality of wireless process automation transmitters; and transmitting information to the smart glass device corresponding to each of the plurality of wireless process automation transmitters in the field of view of the smart glass device. ### Claim 16 (depends on 15) The method of claim 15, further comprising updating the locations of the plurality of wireless process automation transmitters; and transmitting information to the smart glass device at a predetermined frequency. ### Claim 17 (depends on 11) The method of claim 11, further comprising updating the location of the smart glass device at a predetermined frequency. ### Claim 18 (depends on 17) The method of claim 17, further comprising determining if the first wireless process automation transmitter is in the field of view of the smart glass device at a predetermined frequency. ### Claim 19 (depends on 11) The method of claim 11, further comprising determining the orientation angle using an accelerometer of the smart glass device. ### Claim 20 (depends on 11) The method of claim 11, wherein the first wireless process automation transmitter is at least one of a pressure sensor, a level sensor, and a flow sensor.