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Method and device for estimating a profile depth of a tire

  • US 9,513,192 B2
  • Filed: 07/18/2013
  • Issued: 12/06/2016
  • Est. Priority Date: 07/24/2012
  • Status: Active Grant
First Claim
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1. A method for estimating a profile depth of a tire of a vehicle during an operation of the vehicle, which comprises the steps of:

  • measuring signals of a piezoelectric element disposed on an inside of the tire in a region that is deformed when passing through a contact area;

    deriving the actual data from the signals measured by determining a first summation value by accumulating signals corresponding to a gentler curvature of the piezoelectric element than a normal curvature of the piezoelectric element or determining a second summation value by accumulating signals corresponding to a tighter curvature of the piezoelectric element than the normal curvature of the piezoelectric element;

    comparing the actual data derived from the signals with comparison data, the comparison data containing records that indicate expected actual data for each of a plurality of profile depths; and

    estimating the profile depth based on a comparison of the signals or the actual data with the comparison data.

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