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Title:
GAS SENSOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/087609
Kind Code:
A1
Abstract:
To address the problem of suppressing responsiveness decrease and enhancing measurement accuracy under conditions of extreme environmental change, this gas concentration sensor device comprising a thermal sensor element having a heating element formed on a thin film part of a substrate is provided with a signal processing unit that processes the signal of the thermal sensor element and outputs a signal that has been shifted in the minimum value direction of the input signal. As a result, it is possible to obtain a signal with low measurement error from a signal having measurement error superimposed thereon.

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Inventors:
NAKANO HIROSHI (JP)
MATSUMOTO MASAHIRO (JP)
HOSHIKA HIROAKI (JP)
HOSOKAWA TAKEO (JP)
Application Number:
PCT/JP2018/034734
Publication Date:
May 09, 2019
Filing Date:
September 20, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
G01N25/62; G01F1/68; G01N25/18
Domestic Patent References:
WO2018190060A12018-10-18
Foreign References:
JPS5640718A1981-04-17
JP6177384B12017-08-09
JP2000310551A2000-11-07
JP2016011889A2016-01-21
JP2007205916A2007-08-16
JPS59148821A1984-08-25
JP2002323362A2002-11-08
JP2000320391A2000-11-21
US20060224298A12006-10-05
Attorney, Agent or Firm:
TODA Yuji (JP)
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