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Robust system and method for auto-location of tire-based sensors

  • US 9,522,578 B1
  • Filed: 11/11/2015
  • Issued: 12/20/2016
  • Est. Priority Date: 11/11/2015
  • Status: Active Grant
First Claim
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1. A tire sensor locating system for auto-location of tire-based sensors comprising:

  • a vehicle supported by a plurality of vehicle tires, each of the tires mounted to a wheel hub and each of the tires having a respective tire-based sensor operable to measure a tire air pressure;

    a receiver for receiving from one of the tire sensors a measured tire air pressure at an un-identified sensor location on the vehicle;

    a plurality of hub acceleration sensors mounted to the vehicle, each hub acceleration sensor operable to make a hub vertical acceleration measurement at a preset and known location on the vehicle for a respective one of the wheel hubs;

    a chassis acceleration sensor mounted to a chassis of the vehicle operable to make a chassis vertical acceleration measurement for the vehicle chassis;

    an estimator model for deriving a tire vertical stiffness estimation from the hub vertical acceleration measurements and the chassis vertical acceleration measurement;

    a look-up table correlating tire vertical stiffness estimation against measured air pressure;

    a processor operable to consult the look-up table and identify an assigned location of the one tire sensor from a correlation between the tire measured air pressure of the one tire and the tire vertical stiffness estimation of the one tire.

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