Vehicle classification and axle counting sensor system and method

  • US 20020140924A1
  • Filed: 10/16/2001
  • Published: 10/03/2002
  • Est. Priority Date: 01/08/1999
  • Status: Abandoned Application
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First Claim
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1. A method for determining a vehicle profile useful in classifying the vehicle and for counting the number of axles carried by the vehicle, the method comprising the steps of:

  • scanning a laser range finder beam transversely across a vehicle traveling through a sensing zone of the sensor for determining the range for a plurality of points on the vehicle;

    determining an orientation of the beam for each of the plurality of points on the vehicle;

    determining a vehicle speed;

    processing the ranges and corresponding beam orientations for forming a set of two dimensional cross-sectional profiles of the vehicle;

    positioning the profiles based on the vehicle speed;

    providing a three-dimensional representation of the vehicle for classification thereof; and

    emitting a laser beam toward the vehicle for determining the number of axles carried by the vehicle.

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