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Automotive cargo space occupant detector

  • US 6,339,376 B1
  • Filed: 10/11/2000
  • Issued: 01/15/2002
  • Est. Priority Date: 10/26/1999
  • Status: Expired due to Fees
First Claim
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1. An abnormality alarm apparatus, comprising:

  • at least one electrically conductive member provided in a load-carrying compartment isolated from a passenger compartment of a vehicle;

    an oscillator circuit that is connected to the at least one electrically conductive member and that changes an oscillating frequency based on a change in capacitance of a space near the at least one electrically conductive member;

    a frequency change detection circuit that detects a moving object in the space near the at least one electrically conductive member based on a change in the oscillating frequency of the oscillator circuit; and

    an alarm device that produces an alarm based on a result of detection by the frequency change detection circuit, wherein the alarm device produces the alarm when the frequency change detecting circuit detects the moving object during stoppage of the vehicle.

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