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Device for locating a vehicle tied to a roadway

  • US 8,067,933 B2
  • Filed: 07/06/2006
  • Issued: 11/29/2011
  • Est. Priority Date: 07/06/2006
  • Status: Expired due to Fees
First Claim
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1. A system for locating a vehicle tied to a guideway, comprising:

  • a plurality of reference markers disposed on the guideway at a given spacing distance along the guideway;

    a scanning device mounted to the vehicle and generating an output signal when said scanning device passes a reference marker as the vehicle travels along the guideway;

    said scanning device having a plurality of individual sensors and extending in a direction of travel with an average scanning length, the average scanning length being equal to or greater than the given spacing distance between mutually adjacent said reference markers;

    said individual sensors disposed next to one another being configured to generate output signals with mutually different signs as said individual sensors travel over a reference marker;

    said individual sensors being disposed in two rows of sensors next to one another and extend in the direction of travel;

    said two rows of sensors being disposed with an offset relative to one another in the direction of travel;

    said offset being equal to half a dimension of said reference markers in the direction of travel; and

    said scanning device being configured to continuously read said plurality of reference markers located along the guideway.

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