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Vehicle wheel auto-location using wheel phase angle information

  • US 8,332,103 B2
  • Filed: 09/22/2010
  • Issued: 12/11/2012
  • Est. Priority Date: 09/22/2009
  • Status: Active Grant
First Claim
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1. A method for performing auto-location of a wheel in a vehicle using wheel phase angle information, comprising the steps of:

  • arranging a wheel unit to be associated with a wheel of the vehicle, the wheel unit comprising a tire pressure monitoring sensor and a wheel phase angle sensor and the wheel unit transmitting tire pressure measured by the tire pressure monitoring sensor;

    arranging an antilock brake system (“

    ABS”

    ) sensor to be associated with each wheel of the vehicle, the ABS sensor producing ABS data indicative of the wheel phase angle;

    upon rotation of the wheel, measuring a wheel phase angle at a first time (T1) and at a second time (T2) with the wheel phase angle sensor;

    at the second time (T2), transmitting from the wheel unit a frame of data comprising wheel phase angle information and an identification of the tire pressure monitoring sensor;

    at an electronic control unit (“

    ECU”

    ), receiving the frame of data and calculating, by a processor, the first time (T1) based on a predetermined time delay;

    receiving the ABS data associated with each wheel;

    correlating, by the processor., the wheel phase angle information with the ABS data at the calculated first time (T1) and the second time (T2); and

    assigning the identification to a location of the wheel whose ABS data matches with the wheel phase angle information.

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