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Method for detecting the state of a tire

  • US 8,332,092 B2
  • Filed: 04/23/2007
  • Issued: 12/11/2012
  • Est. Priority Date: 06/21/2006
  • Status: Expired due to Fees
First Claim
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1. A computer-implemented method of a tire monitoring system having at least one computer processor for detecting a state of a vehicle tire and a roadway, the method comprising:

  • generating, using at least one acceleration sensor disposed in a tire interior, a signal that represents periodically alternating phases of a centripetal acceleration and is assigned to physical variables of the vehicle tire and the roadway in those phases in which the signal drops below a lower limit value; and

    determining a tire state and characteristics of the roadway based on the signal;

    wherein a signal spectrum is obtained from the signal, and wherein the determined signal spectrum at least partially includes vibrations that are generated by a movement of a part of a running surface of the vehicle tire adjacent to the acceleration sensor when rolling on the roadway;

    wherein a vehicle tire is assigned a setpoint signal strength and a setpoint frequency spectrum of the signal spectrum, and an actual signal strength and an actual frequency spectrum of the signal spectrum are determined, and a profile height and material characteristics of the vehicle tire are determined by a comparison of the actual signal strength with the setpoint signal strength and the actual frequency spectrum with the setpoint frequency spectrum.

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