The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2013
Filed:
Oct. 26, 2010
Heewon Jeong, Tokyo, JP;
Kiyoko Yamanaka, Tachikawa, JP;
Yasushi Goto, Kokubunji, JP;
Toshiaki Nakamura, Hitachinaka, JP;
Masahide Hayashi, Mito, JP;
Heewon Jeong, Tokyo, JP;
Kiyoko Yamanaka, Tachikawa, JP;
Yasushi Goto, Kokubunji, JP;
Toshiaki Nakamura, Hitachinaka, JP;
Masahide Hayashi, Mito, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A technique in which a false detection and a wrong diagnosis can be suppressed in a capacitance sensor represented by an acceleration sensor is provided. A first capacitative element and a second capacitative element, which configure a capacitance detection unit, and a third capacitative element and a fourth capacitative element, which configure a forced oscillation generation unit, are electrically separated from each other. That is, the diagnosis movable electrode that configures the third capacitative element and the fourth capacitative element is formed integrally with the movable part. On the other hand, the diagnosis fixed electrode and the diagnosis fixed electrode are electrically separated from the detection fixed electrode and the detection fixed electrode.