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Occupant classification system

  • US 8,818,637 B2
  • Filed: 01/26/2007
  • Issued: 08/26/2014
  • Est. Priority Date: 01/26/2006
  • Status: Active Grant
First Claim
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1. An occupant classification system comprising:

  • a sensing element in a vehicle seat, the sensing element comprises a sensing electrode;

    a measurement circuit that is configured to measure a property associated with the sensing electrode;

    at least one wire that connects at least one additional conductor to a chassis ground;

    a circuit that is configured to determine if the at least one additional conductor is grounded to the chassis ground; and

    a controller that is configured to classify an occupant by using measurements of the measurement circuit;

    wherein the controller includes a mechanism that provides an alternative grounding path to a circuit ground for the at least one additional conductor when circuit determines that the at least one additional conductor is not grounded to the chassis ground.

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