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Tire inflation pressure detecting apparatus with function of identifying running and spare wheels

  • US 20070205883A1
  • Filed: 03/02/2007
  • Published: 09/06/2007
  • Est. Priority Date: 03/02/2006
  • Status: Active Grant
First Claim
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1. A wheel identifying apparatus comprising:

  • a transmitter located on a body of a vehicle and working to transmit a signal during running of the vehicle;

    a signal strength determiner located on a wheel of the vehicle away from a rotational axis of the wheel, the signal strength determiner working to determine strength of the signal thereat;

    a variation determiner working to determine a variation in the strength of the signal determined by the signal strength determiner; and

    a wheel identifier configured to identify the wheel as being located on the body of the vehicle when the variation determined by the variation determiner is substantially zero.

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