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:
Mar. 18, 2014
Filed:
Nov. 29, 2011
Masayoshi Satake, Okazaki, JP;
Hiroyuki Mori, Obu, JP;
Kouji Ootaka, Toyohashi, JP;
Hajime Nakagawa, Nagoya, JP;
Toshihiro Hattori, Okazaki, JP;
Noboru Maeda, Chiryu, JP;
Masayoshi Satake, Okazaki, JP;
Hiroyuki Mori, Obu, JP;
Kouji Ootaka, Toyohashi, JP;
Hajime Nakagawa, Nagoya, JP;
Toshihiro Hattori, Okazaki, JP;
Noboru Maeda, Chiryu, JP;
Denso Corporation, Kariya, JP;
Nippon Soken, Inc., Nishio, JP;
Abstract
A capacitive occupant detection apparatus comprising a sensor unit and a control unit is disclosed. The sensor unit includes a detection electrode and a periphery guard electrode. The control unit includes: a signal application circuit for applying an oscillation signal to the detection electrode; an operational amplifier for applying to the guard electrode a signal having the same phase and potential as the oscillation signal applied to the detection electrode; and a control circuit for receiving current and voltage values supplied to the detection and for determining a mounting state on a seat based on the inputted current and voltage values (including phase information). The periphery guard electrode is located to surround the detection electrode when viewed from an upper side of the detection electrode.