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Occupant detection apparatus

  • US 20110285408A1
  • Filed: 05/18/2011
  • Published: 11/24/2011
  • Est. Priority Date: 05/19/2010
  • Status: Abandoned Application
First Claim
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1. An occupant detection apparatus comprising:

  • a capacitive sensor having an electrode;

    a signal applying circuit configured to apply a voltage amplitude signal to the electrode during a first time period and configured not to apply the voltage amplitude signal to the electrode during a second time period, the voltage amplitude signal having a voltage with a varying amplitude;

    a signal detector configured to detect a change in an electric current flowing through the capacitive sensor during the first time period; and

    a voltage applying circuit configured to apply a predetermined voltage to the electrode during the entire first time period and during at least part of the second time period.

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