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Passenger detection system

  • US 6,356,187 B2
  • Filed: 06/23/1998
  • Issued: 03/12/2002
  • Est. Priority Date: 06/23/1997
  • Status: Expired due to Term
First Claim
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1. A passenger detection system for detecting seating status of a passenger on a seat of a vehicle by placing a plurality of electrodes apart on the upper side of the seat and generating a weak alternating electric field between a transmission electrode selected from the electrodes and reception electrodes other than the transmission electrode and detecting displacement currents passing in the reception electrodes caused by the weak alternating electric field, wherein:

  • an electrode structure is preliminarily formed by fixing the electrodes a predetermined distance apart on an electrical insulating base material, and the electrode structure is placed between a cushion material and a covering material of the seat.

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