US 12,066,416 B2
Arithmetic device, arithmetic method, and gas detection system
Masashi Hattori, Tokyo (JP); Kenichi Shimomai, Tokyo (JP); and Yosuke Onda, Tokyo (JP)
Assigned to TAIYO YUDEN CO., LTD., Tokyo (JP)
Appl. No. 17/605,543
Filed by TAIYO YUDEN CO., LTD., Tokyo (JP)
PCT Filed Apr. 17, 2020, PCT No. PCT/JP2020/016840
§ 371(c)(1), (2) Date Oct. 21, 2021,
PCT Pub. No. WO2020/218179, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 2019-081287 (JP), filed on Apr. 22, 2019.
Prior Publication US 2022/0236225 A1, Jul. 28, 2022
Int. Cl. G01N 33/00 (2006.01); G01N 1/40 (2006.01); G01N 5/02 (2006.01); G01N 29/02 (2006.01); G01N 29/036 (2006.01); G01N 29/22 (2006.01); G01N 29/44 (2006.01)
CPC G01N 33/0027 (2013.01) [G01N 1/40 (2013.01); G01N 5/02 (2013.01); G01N 29/02 (2013.01); G01N 29/036 (2013.01); G01N 29/222 (2013.01); G01N 29/4463 (2013.01); G01N 2291/014 (2013.01); G01N 2291/021 (2013.01); G01N 2291/0215 (2013.01); G01N 2291/0256 (2013.01); G01N 2291/106 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A gas detection system comprising:
a gas sensor including a detection element that causes a resonant frequency change by adsorption of target gas; and
an arithmetic device including a calculator that calculates a correction coefficient on a basis of a resonant frequency change amount associated with a humidity change of the detection element in a degraded state and a resonant frequency change amount associated with a humidity change of the detection element in an initial state that was acquired in advance, and
corrects the resonant frequency change amount associated with the humidity change of the detection element in the degraded state by using the correction coefficient,
wherein the resonant frequency change amount associated with the humidity change of the detection element in the initial state that was acquired in advance is a resonant frequency change amount associated with the humidity change of the detection element in the initial state that is calculated in advance on the basis of a first resonant frequency detected when a first gas that has been dehumidified and deodorized from the target gas arrives at the detection element in the initial state, a second resonant frequency detected when a second gas that has been deodorized without being dehumidified from the target gas arrives at the detection element in the initial state, and humidity information on the target gas detected by a humidity sensor.