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:
Oct. 18, 2011
Filed:
Feb. 19, 2008
Tsutomu Kamizono, Nagoya, JP;
Shoichi Yamanaka, Anjo, JP;
Shinichi Kiribayashi, Anjo, JP;
Masahiro Ishikawa, Toyohashi, JP;
Tsutomu Kamizono, Nagoya, JP;
Shoichi Yamanaka, Anjo, JP;
Shinichi Kiribayashi, Anjo, JP;
Masahiro Ishikawa, Toyohashi, JP;
Denso Corporation, Kariya, JP;
Abstract
A capacitance-based occupant detection system accurately determines seat occupancy and a failure of an electrode and between electrodes and includes an impedance calculation section, a Re/Im part calculation section, and a determination section. A first impedance Zis calculated including a main-body impedance Za between a main electrode and a vehicle body. The Re/Im part calculation section calculates real and imaginary parts of the first impedance Zbased on the first impedance Zcalculated by the impedance calculation section. The determination section determines the presence or absence of destruction of the main electrode and a guard electrode based on an imaginary part of the first impedance Zcalculated by the Re/Im part calculation section.