US 12,265,069 B2
Gas concentration measurement system
Masanori Masuda, Tokyo (JP); and Yuta Takagi, Tokyo (JP)
Assigned to Asahi Kasei Microdevices Corporation, Tokyo (JP)
Filed by Asahi Kasei Microdevices Corporation, Tokyo (JP)
Filed on Mar. 20, 2023, as Appl. No. 18/186,191.
Claims priority of application No. 2022-057668 (JP), filed on Mar. 30, 2022; and application No. 2023-036062 (JP), filed on Mar. 8, 2023.
Prior Publication US 2023/0349876 A1, Nov. 2, 2023
Int. Cl. G01N 21/3504 (2014.01); G01N 21/31 (2006.01); G01N 33/00 (2006.01)
CPC G01N 33/0062 (2013.01) [G01N 21/3504 (2013.01); G01N 2021/3181 (2013.01); G01N 2201/062 (2013.01); G01N 2201/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A gas concentration measurement system comprising:
a gas concentration measurement section including a light-emitting element and a first sensor element;
a light-emitting element drive section that drives the light-emitting element;
a signal acquisition section that acquires at least an output signal of the first sensor element, a first drive signal that is a first voltage value or a first current value of the light-emitting element, and a second drive signal that is a second voltage value or a second current value of the light-emitting element; and
a computation section that computes a gas concentration based on signals acquired by the signal acquisition section, wherein
the computation section, based on the first drive signal and the second drive signal, corrects the output signal of the first sensor element and computes the gas concentration.