公开(公告)号：US20200292480A1

公开(公告)日：2020-09-17

申请号：US16610678

申请日：2018-05-04

Applicant: ROYAL MELBOURNE INSTITUTE OF TECHNOLOGY

Inventor： Adam CHRIMES ,  Kyle BEREAN ,  Nam HA ,  Kourosh KALANTAR-ZADEH

IPC: G01N27/12

Abstract: Disclosed herein is a method for determining a type and corresponding concentration of at least one gas in a multi-gas mixture, the method including: exposing a gas sensitive element of a gas sensor to the multi-gas mixture; modulating a drive signal supplied to a temperature control element of the gas sensor to cause a temperature of the gas sensitive element to change from an initial temperature; recording a transient impedance response of the gas sensitive element while the temperature of the gas sensitive element changes to obtain a transient impedance response that is characteristic of the multi-gas mixture; using the transient impedance response to determine a type and corresponding concentration of at least one gas in the multi-gas sample from a database including calibration data corresponding to the at least one gas. Also disclosed herein is a method of calibrating a multi-gas sensing system, a multi-gas sensing system, and related methods for determining a type and corresponding concentration of at least one gas in a multi-gas mixture.