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Hot rail wheel bearing detection system and method

  • US 8,157,220 B2
  • Filed: 05/16/2008
  • Issued: 04/17/2012
  • Est. Priority Date: 05/17/2007
  • Status: Active Grant
First Claim
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1. A method for detecting a moving hot bearing or wheel of a rail car comprising:

  • (a) establishing features of sensor signals in a multidimensional decision space;

    (b) establishing a multidimensional threshold for discriminating between abnormally hot bearings or wheels and bearings or wheels that are not abnormally hot, wherein the multidimensional threshold is based on an average power of the sensor signals and a normalized fourth moment of the sensor signals;

    (c) receiving signals representative of temperature of the moving bearing or wheel; and

    (d) determining whether the bearing or wheel is likely hotter than desired based upon the multidimensional threshold and the signals.

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