# US 12,222,341 B2 · Gas monitor and method of detecting gas, including a ripening monitor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,222,341 B2 - Document ID: US12222341B2 - Status: Granted - Kind: B2 - Application number: 17/760,377 - Filed: 2021-02-10 - Published: 2023-07-20 - Granted: 2025-02-11 - Earliest claimed: 2020-02-10 - Assignees: Post Harvest IP Pty Ltd - Applicants: Post Harvest IP Pty Ltd - Inventors: Michael Potas; Gennadiy Volkov; Alexander Hatzimihali; Joshua Dunford; Jonathan Shannon; Alex Matthews; Jason Robert Potas - Web page: https://patentgrep.com/patent/US12222341B2 ## CPC - G01N 33/0011: {Sample conditioning (preparing specimens for investigation G01N1/28)} - G01N 33/0014: {by eliminating a gas (by a chemical reaction G01N33/0013; a chemical reaction taking place or a gas being eliminated in one or more analysing channels G01N33/0024)} - G01N 1/405: {by adsorption or absorption} - G01N 33/0006: {Calibrating gas analysers} - G01N 33/0008: {Details concerning storage of calibration data, e.g. in EEPROM} - G01N 33/0019: {by preconcentration} - G01N 33/0031: {comprising two or more sensors, e.g. a sensor array} - G08B 21/14: Toxic gas alarms (G08B21/16 takes precedence) - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS ## Abstract A gas monitor configured to monitor at least one target gas in an environmental mixture, by separating and concentrating the target gas and then adjusting for the concentration factor. The adjustment may also take into account sensor sensitivities to other gases. Methods for adjustment of target gas results are described. ## Claims ### Claim 1 A method of measuring the concentration of a target gaseous or aerosolized compound in a gaseous environment, the method including the steps of: extracting a selected sample quantity of the gaseous environment into a target gas measurement system; separating the target gaseous or aerosolized compound from the quantity of sample gas, into a store; sensing, with a target gas sensor, the amount or concentration of the target gaseous or aerosolized compound from the store, sensing with a gas sensor, at least one second gas component selected from the group consisting of oxygen, carbon dioxide, carbon monoxide, and volatile organic compounds; receiving in a processor, data from the target gas sensor relating to the amount or concentration of the target gaseous or aerosolized compound; converting, in the processor, the target gas sensor data, with a conversion algorithm, to obtain environmental concentration data of the target gaseous or aerosolized compound by adjusting the concentration data with reference to a target sensor sensitivity to the at least one second gas component; and storing in a data store or displaying on a display, the environmental concentration data, or transmitting the environmental concentration data to a remote server or processor. ### Claim 2 (depends on 1) The method in accordance with claim 1 further including the step of measuring with a sample gas sensor the quantity of the gas sample in the gas measurement system. ### Claim 3 (depends on 1) The method in accordance with claim 1 including the step of receiving, into the processor, data relating to the selected quantity of sample gas. ### Claim 4 (depends on 1) The method in accordance with claim 1 wherein the algorithm takes into account data from a sample gas sensor relating to a sample gas quantity and/or one or more physical qualities taken from the group consisting of: temperature, volume, pressure, and humidity. ### Claim 5 (depends on 1) The method in accordance with claim 1, further comprising calculating, in the processor, a baseline-adjusted amount or concentration of the target gaseous or aerosolized compound by subtracting a baseline target gas amount from a peak target gas amount in the store, wherein the baseline corresponds to the gaseous environment. ### Claim 6 (depends on 1) The method in accordance with claim 1 wherein the amount or concentration of the target gaseous or aerosolized compound is calculated by measuring an area under a concentration data curve over time from release from the store. ### Claim 7 (depends on 1) The method in accordance with claim 1 further including the step of extracting the gas from the store to a target gas sensor unit, for sensing the amount of target gaseous or aerosolized compound. ### Claim 8 (depends on 1) The method in accordance with claim 1 further including the step of conditioning the selected sample quantity of gaseous environment to a selected physical state to provide a conditioned gas sample for input to the separation step. ### Claim 9 (depends on 8) The method in accordance with claim 8 wherein the conditioning step includes dehumidifying the gas sample. ### Claim 10 (depends on 1) The method in accordance with claim 1 wherein the separation step is conducted in a concentrator module, in which the store is disposed, to store a storage matrix. ### Claim 11 (depends on 10) The method in accordance with claim 10 wherein the storage matrix is activated carbon. ### Claim 12 (depends on 1) The method in accordance with claim 1 wherein ethylene is the target gaseous or aerosolized compound and the separation step is adsorption of ethylene. ### Claim 13 (depends on 1) The method in accordance with claim 1 wherein the sensing step includes desorption from the store of, and sensing in the target gas sensor of, ethylene. ### Claim 14 (depends on 1) The method in accordance with claim 1 further including an assessment step in which the processor compares the amount or concentration of the target gaseous or aerosolized compound to a threshold level or rate of increase. ### Claim 15 (depends on 14) The method in accordance with claim 14 further including an alarm actuation step in which a wireless module transmits an alarm to a display or loudspeaker and amplifier on a mobile device or computer. ### Claim 16 (depends on 15) The method in accordance with claim 15 wherein the alarm step is taken if the threshold level or rate of increase is exceeded. ### Claim 17 (depends on 1) The method of claim 1, wherein the conversion algorithm comprises applying a linear model to obtain an estimate of the concentration of the target gaseous or aerosolized compound, based on the sensed amount or concentration of the target gaseous or aerosolized compound from the store. ### Claim 18 A gas component monitor for monitoring the concentration of a target gaseous or aerosolized compound in a gaseous environment, the monitor system including: a pump for extracting from an environment a sample of gas of a selected or predetermined quantity from the environment; a concentrator module which includes a separator for separation of the target gaseous or aerosolized compound from the gas sample, the separator including a store for storage of a target gaseous or aerosolized compound; a target gas component sensor module configured to: sense the concentration or amount of the gaseous or aerosolized compound in the store; and sense at least one second gas component selected from the group consisting of: oxygen, carbon dioxide, carbon monoxide, and volatile organic compounds; and a processor connected to the target gas component sensor module, the processor configured to calculate the environmental concentration of the target gaseous or aerosolized compound based on a conversion algorithm that adjusts the concentration data with reference to a target sensor sensitivity to the at least one second gas component.