Title:
GAS DETECTOR
Document Type and Number:
Japanese Patent JP2021004851
Kind Code:
A
Abstract:
To provide a gas detector capable of detecting a detection target gas accurately in substantially same measurement time as before deterioration of an MEMS semiconductor type gas detection element even if the gas detection element deteriorates.SOLUTION: The gas detector in the present invention comprises: an MEMS semiconductor type gas detection element 21; a gas detection part 2 outputting a change of the MEMS semiconductor type gas detection element 21 as a detection signal; and a control part 3. The control part 3 is configured to, with the gas detection part 2: obtain a plurality of detection signal intensities for a measurement target gas during a measurement time from heating start time of the MEMS semiconductor type gas detection element 21 to a predetermined detection time with time intervals; extrapolate a detection signal intensity at the measurement time after the predetermined detection time on the basis of the plurality of detection signal intensities obtained by the gas detection part 2; and determine whether the detection target gas is present or the concentration thereof on the basis of the extrapolated detection signal intensity.SELECTED DRAWING: Figure 1
Inventors:
ORITA YASUSHI
Application Number:
JP2019119966A
Publication Date:
January 14, 2021
Filing Date:
June 27, 2019
Export Citation:
Assignee:
NEW COSMOS ELECTRIC CO
International Classes:
G01N27/12
Attorney, Agent or Firm:
Asahina Patent Office