US 11,867,676 B2
Multi-gas sensing system and method
Radislav Alexandrovich Potyrailo, Niskayuna, NY (US); Richard St. Pierre, Clifton Park, NY (US); and Bruce Courtney Amm, Clifton Park, NY (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Mar. 9, 2020, as Appl. No. 16/812,613.
Prior Publication US 2021/0278384 A1, Sep. 9, 2021
Int. Cl. G01N 33/00 (2006.01)
CPC G01N 33/0031 (2013.01) [G01N 33/0006 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A multi-gas sensing system comprising:
a sensing circuit comprising one or more sensing elements, each of the one or more sensing elements comprising a sensing material configured to detect at least one gas analyte;
a management circuit configured to excite the one or more sensing elements with an alternating current at one or more predetermined frequencies, the management circuit configured to measure one or more electrical responses of the one or more sensing elements responsive to exciting the one or more sensing elements with the alternating current at the one or more predetermined frequencies, the management circuit configured to determine one or more characteristics of the sensing circuit based on the one or more electrical responses of the one or more sensing elements, wherein the one or more characteristics of the sensing circuit comprises a temperature of the one or more sensing elements; and
one or more processors configured to receive the one or more electrical responses of the one or more sensing elements and the one or more characteristics of the sensing circuit, wherein the one or more processors are configured to determine a concentration of the at least one gas analyte based on the one or more electrical responses of the one or more sensing elements and the one or more characteristics of the sensing circuit.