Title:
ガスセンサ
Document Type and Number:
Japanese Patent JP6939817
Kind Code:
B2
Abstract:
A gas sensor includes a first sensor part that can detect the concentration of the mixture of a first gas and a second gas, a second sensor part having higher detection sensitivity with respect to the second gas than with respect to the first gas, and a signal processing circuit that subtracts the concentration of the second gas detected by the second sensor part from the mixture concentration detected by the first sensor part to derive the concentration of the first gas. The concentration of the second gas detected by the second sensor part is subtracted from the concentration of the mixture concentration detected by the first sensor part, so that it is possible to cancel the influence of the second gas which is miscellaneous gas to thereby work out a correct value of concentration of the first gas to be detected.
Inventors:
Yoshio Kaita
Application Number:
JP2018562893A
Publication Date:
September 22, 2021
Filing Date:
November 09, 2017
Export Citation:
Assignee:
tdk Corporation
International Classes:
G01N27/16; G01N27/18
Domestic Patent References:
| JP7260730A | ||||
| JP2002323468A |
Foreign References:
| US20120047995 |
Attorney, Agent or Firm:
Mitsuhiro Washito
Ogata Japanese
Ogata Japanese