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Occupant position system and method using ultrasonic technology

  • US 6,271,762 B1
  • Filed: 02/27/1999
  • Issued: 08/07/2001
  • Est. Priority Date: 02/27/1999
  • Status: Expired due to Fees
First Claim
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1. A method of detecting one or more objects including an occupant of a vehicle and identifiable parts of the occupant, comprising the steps of:

  • a) transmitting a first pulse having a determinable signature in the direction of an occupant;

    b) establishing a received signal threshold;

    c) sensing a received signal reflected from an object including a received signal reflected from the targeted occupant;

    d) determining when the amplitude of the received signal exceeds the threshold and storing numbered time increments during which the received signal exceeds the threshold;

    e) evaluating the stored increments and grouping contemporaneous increments together, each group of increments being indicative of one target which reflected the first pulse;

    f) determining a first group of increments, from those grouped in step e, corresponding to the highest numbered increments and correlating same with the position of the torso of the occupant.

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