A clear current threshold for a track circuit is defined as a current above which a section of track is considered to be unoccupied. During periods of precipitation the current is reduced from a normal baseline even when the track is unoccupied which can lead to false alarms. The method includes receiving weather data for the vicinity of the track at a number of points in time, possibly from a simple rain gauge or online data over several days; and receiving corresponding current data from which a first level of current is identified that is likely to pass through the track circuit in the absence of a train and in the absence of precipitation. A clear current threshold is selected based on this data and the threshold may also be modified to take account of a drying track.


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    Title :

    Methods for selecting a clear current threshold for a railway track circuit


    Contributors:

    Publication date :

    2017-09-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



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