# US 12,604,164 B2 · System and methods for hydrogen plant condition monitoring using a wireless modular sensor system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,164 B2 - Document ID: US12604164B2 - Status: Granted - Kind: B2 - Application number: 18/438,221 - Filed: 2024-02-09 - Published: 2024-08-15 - Granted: 2026-04-14 - Earliest claimed: 2023-02-09 - Assignees: Ohmium International, Inc. - Applicants: Ohmium International, Inc. - Inventors: Rasool Aghatehrani; Arne Ballantine - Web page: https://patentgrep.com/patent/US12604164B2 ## CPC - H04W 4/38: for collecting sensor information - G01D 21/02: Measuring two or more variables by means not covered by a single other subclass - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR ## Abstract A system for monitoring a hydrogen plant includes a plurality of wireless sensor modules, each wireless sensor module including at least one sensor configured for monitoring for at least one condition and a wireless interface configured for transmitting data concerning the at least one condition via a wireless network to a remote station when the at least one condition is detected by the at least one sensor, wherein the plurality of wireless sensor modules cooperatively extend the wireless network to an area of the hydrogen plant wider than a range of an individual wireless interface. ## Claims ### Claim 1 A system for monitoring a hydrogen plant, comprising: a first mobile wireless hydrogen flame sensor module including: a first hydrogen flame sensor configured for detecting a hydrogen flame indicative of a hydrogen leak within the hydrogen plant; a first wireless interface configured for transmitting data concerning the hydrogen leak via a wireless network to a second mobile wireless hydrogen flame sensor module when the hydrogen leak is detected by the first hydrogen flame sensor; a first drive system including a motor, drive train, and controller that moves the first mobile wireless hydrogen flame sensor module along a surface; and a first navigation system that controls movement of the first mobile wireless hydrogen flame sensor module; and the second mobile wireless hydrogen flame sensor module including: a second hydrogen flame sensor; a second wireless interface configured for transmitting the data concerning the hydrogen leak via the wireless network to a remote station when the hydrogen leak is detected by the first hydrogen flame sensor; a second drive system including a motor, drive train, and controller that moves the second mobile wireless hydrogen flame sensor module along the surface; and a second navigation system that controls movement of the second mobile wireless hydrogen flame sensor module; wherein the first mobile wireless hydrogen flame sensor module is movable by the first drive system beyond a wireless communication range of the remote station in response to communication from the remote station through the second wireless interface and the first wireless interface. ### Claim 2 (depends on 1) The system of claim 1, wherein the first mobile wireless hydrogen flame sensor module further includes a humidity sensor configured to detect a humidity level within the hydrogen plant that is outside a prescribed level that increases a risk of a hydrogen leak, wherein the first wireless interface is configured for transmitting data concerning the detected humidity via the wireless network to the second mobile wireless hydrogen flame sensor module, and wherein the second wireless interface is configured for transmitting the data concerning the detected humidity via the wireless network to the remote station. ### Claim 3 (depends on 1) The system of claim 1, wherein the first and second mobile wireless hydrogen flame sensor modules are configured to cooperatively produce a mesh network. ### Claim 4 (depends on 1) The system of claim 1, wherein the first hydrogen flame sensor includes at least one a flame rod sensor or a combination of the flame rod sensor and an ultra-violet sensor. ### Claim 5 (depends on 1) The system of claim 1, wherein the first mobile wireless hydrogen flame sensor module includes a vibration sensor for detecting vibrations within the hydrogen plant that increase a risk of a hydrogen leak, wherein the first wireless interface is configured for transmitting data concerning the detected vibrations via the wireless network to the second mobile wireless hydrogen flame sensor module, and wherein the second wireless interface is configured for transmitting the data concerning the detected vibrations via the wireless network to the remote station. ### Claim 6 (depends on 1) The system of claim 1, wherein the first mobile wireless hydrogen flame sensor module further includes a snow level measurement sensor for detecting a snow level within the hydrogen plant, wherein the first wireless interface is configured for transmitting data concerning the detected snow level via the wireless network to the second mobile wireless hydrogen flame sensor module, and wherein the second wireless interface is configured for transmitting the data concerning the detected snow level via the wireless network to the remote station. ### Claim 7 (depends on 1) The system of claim 1, wherein the first mobile wireless hydrogen flame sensor module further includes a movement detection sensor configured to detect movement of the first mobile wireless hydrogen flame sensor module relative to its original position and generate an alert in response to a detected movement, wherein the first wireless interface is configured for transmitting the alert via the wireless network to the second mobile wireless hydrogen flame sensor module, and wherein the second wireless interface is configured for transmitting the alert via the wireless network to the remote station. ### Claim 8 (depends on 7) The system of claim 7, wherein the movement detection sensor includes at least one of a gyroscope, an accelerometer, or a global positioning system (GPS) sensor. ### Claim 9 (depends on 1) The system of claim 1, wherein the first mobile wireless hydrogen flame sensor module includes a camera for capturing images within the hydrogen plant, wherein the first wireless interface is configured for transmitting the images via the wireless network to the second mobile wireless hydrogen flame sensor module, and wherein the second wireless interface is configured for transmitting the images via the wireless network to the remote station. ### Claim 10 (depends on 1) The system of claim 1, wherein the first mobile wireless hydrogen flame sensor module includes a machine learning system for detecting the hydrogen flame based on input from the first hydrogen flame sensor. ### Claim 11 (depends on 10) The system of claim 10, wherein the machine learning system comprises a trained neural network. ### Claim 12 (depends on 1) The system of claim 1, wherein the first mobile wireless hydrogen flame sensor module includes a GPS module to determine at least one of a time, a date, or a location of the first mobile wireless hydrogen flame sensor module, and wherein the first wireless interface is configured for transmitting the at least one of the time, the date, or the location via the wireless network to the second mobile wireless hydrogen flame sensor module, and wherein the second wireless interface is configured for transmitting the at least one of the time, the date, or the location via the wireless network to the remote station. ### Claim 13 (depends on 1) The system of claim 1, wherein at least one of the first and second mobile wireless hydrogen flame sensor modules comprises: a housing; and a magnet coupled to the housing for attaching the at least one of the first and second mobile wireless hydrogen flame sensor module to a metal structure for which hydrogen flame monitoring thereof is required.