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Train detection

  • US 6,848,658 B2
  • Filed: 08/26/2002
  • Issued: 02/01/2005
  • Est. Priority Date: 09/25/2001
  • Status: Expired due to Term
First Claim
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1. A train location arrangement comprising at least a first train detection means and a second train detection means;

  • said first train detection means comprising a plurality of track circuits;

    said second train detection means comprising a plurality of axle counters;

    each of said plurality of track circuits and each of said plurality of axle counters being in sections, and interleaved such that each track circuit section is offset from each axle counter section;

    wherein the location of a train may be determined to within a length of track smaller than the length of either a track circuit section or an axle counter section by combining detection signals from both the first train detection means and the second train detection means.

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