发明申请
- 专利标题: CAPACITIVE OCCUPANT DETECTION APPARATUS
- 专利标题(中): 电容式检测装置
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申请号: US13306168申请日: 2011-11-29
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公开(公告)号: US20120161793A1公开(公告)日: 2012-06-28
- 发明人: Masayoshi Satake , Hiroyuki Mori , Kouji Ootaka , Hajime Nakagawa , Toshihiro Hattori , Noboru Maeda
- 申请人: Masayoshi Satake , Hiroyuki Mori , Kouji Ootaka , Hajime Nakagawa , Toshihiro Hattori , Noboru Maeda
- 申请人地址: JP Nishio-city JP Kariya-city
- 专利权人: Nippon Soken, Inc.,DENSO CORPORATION
- 当前专利权人: Nippon Soken, Inc.,DENSO CORPORATION
- 当前专利权人地址: JP Nishio-city JP Kariya-city
- 优先权: JP2010-267121 20101130; JP2011-239081 20111031
- 主分类号: G01R27/26
- IPC分类号: G01R27/26
摘要:
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.
公开/授权文献
- US08674710B2 Capacitive occupant detection apparatus 公开/授权日:2014-03-18