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.
Methods for selecting a clear current threshold for a railway track circuit
13.09.2017
Patent
Elektronische Ressource
Englisch
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
Methods for selecting a clear current threshold for a railway track circuit
Europäisches Patentamt | 2017
|Europäisches Patentamt | 2023
|