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Capacitance type sensor and occupant detection system having the same

  • US 20050275202A1
  • Filed: 06/14/2005
  • Published: 12/15/2005
  • Est. Priority Date: 06/14/2004
  • Status: Active Grant
First Claim
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1. A capacitance type sensor comprising:

  • a first electrode arranged inside any one of a seating portion and a backrest portion of a seat in a vehicle;

    a second electrode arranged adjacent to the first electrode inside any one of the seating portion and the backrest portion of the seat, whichever the first electrode is arranged, and forming an electric field together with the first electrode therebetween in a wetness determination mode in which a wet condition of the seat is determined; and

    a third electrode that forms an electric field together with the first and the second electrode therebetween in an occupant determination mode in which an occupant in the seat is determined.

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