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Tire tread detection and measurement of physical variables of a tire on a moving vehicle

  • US 7,762,129 B2
  • Filed: 09/25/2007
  • Issued: 07/27/2010
  • Est. Priority Date: 09/25/2007
  • Status: Expired due to Fees
First Claim
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1. A tire tread sensing system, comprising:

  • a magnetic field source configured to magnetize magnetizable particles embedded in a tire tread, wherein the magnetic field source is not embedded in the tire tread; and

    a magnetic field sensor configured to measure a magnetic field strength associated with the magnetic field source and the magnetizable particles, wherein the magnetic field strength is indicative of a tire tread depth.

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