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Passenger detection system and detection method

  • US 6,559,555 B1
  • Filed: 09/13/1999
  • Issued: 05/06/2003
  • Est. Priority Date: 09/02/1999
  • Status: Expired due to Term
First Claim
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1. A passenger detection system comprising:

  • an array of at least three spaced-apart antenna electrodes disposed on a seat, at least two of said antenna electrodes arranged in a linear row and one antenna electrode offset from said linear row;

    an electric field generation device connectable to said at least three spaced-apart antenna electrodes for generating an electric field around at least one antenna electrode of said at least three spaced-apart antenna electrodes;

    a switching circuit for selecting a particular antenna electrode from said at least three spaced-apart antenna electrodes and connecting said selected antenna electrode to said electric field generation device to produce said electric field around said selected antenna electrode;

    an information detection circuit for detecting said electric field around said selected antenna electrode, and obtaining information related to a current flowing in said selected antenna electrode resulting from said electric field around said selected antenna electrode; and

    a control circuit for receiving signal data from said information detection circuit and determining passenger seating conditions on said seat according to said signal data.

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