Title:
Sensor control device
Document Type and Number:
Japanese Patent JP6110262
Kind Code:
B2
Abstract:
A gas sensor control device (2) includes a digital control unit (31) (CPU 91 in detail) functioning as a digital filter unit (99). Even when high-frequency noise components are superimposed on an electrical signal transmitted to a digital control unit (31) from the electromotive force cell (24), the high-frequency noise components are eliminated by the digital filter unit (99). Therefore, a terminal voltage Vs across both terminals of the electromotive force cell (24) generated according to oxygen concentration can be suitably extracted. The digital control unit (31) can suitably perform feedback control of the pump current Ip based on the terminal voltage Vs generated across both terminals of the electromotive force cell (24) while suppressing the influence of high-frequency noise components.
Inventors:
Hiroshi Inagaki
Application Number:
JP2013187252A
Publication Date:
April 05, 2017
Filing Date:
September 10, 2013
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
G01N27/419
Domestic Patent References:
| JP2008008667A | ||||
| JP2000137018A | ||||
| JP2008203142A | ||||
| JP2004093386A | ||||
| JP2004144733A | ||||
| JP2000329730A |
Attorney, Agent or Firm:
Nagoya International Patent Service Corporation