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Title:
静電容量型センサ装置
Document Type and Number:
Japanese Patent JP4336066
Kind Code:
B2
Abstract:
In a capacitive sensor apparatus, a capacitive sensor includes a plurality of physical-quantity-detection capacitors each having a movable electrode and a fixed electrode. A conversion device operates for converting an output signal of the capacitive sensor into an apparatus output signal. Each of the physical-quantity-detection capacitors is selectively connected and disconnected to and from the conversion device. A determination is made as to whether or not each of the physical-quantity-detection capacitors fails in response to the sensor output signal. When it is determined that first one of the physical-quantity-detection capacitors fails, the first one is disconnected from the conversion device and second one of the physical-quantity-detection capacitors is connected to the conversion device.

Inventors:
Noriichi Ota
Keiichi Shimaoka
Hirofumi Funabashi
Seiichiro Ishio
Yasutoshi Suzuki
Ito Ito
Yasuaki Makino
Application Number:
JP2001211099A
Publication Date:
September 30, 2009
Filing Date:
July 11, 2001
Export Citation:
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Assignee:
株式会社豊田中央研究所
株式会社デンソー
International Classes:
G01L1/14; G01D3/08; G01P15/125; G01L13/06; G01R27/26
Domestic Patent References:
JP2000199726A
JP3042539A
JP5501159A
JP10239196A
JP4232436A
Attorney, Agent or Firm:
Hideo Kodama
Hiroaki Murase
Makoto Abe
Tomoya Suzuki