| 摘要 |
PROBLEM TO BE SOLVED: To detect an own train position as a moving distance with each train by dispensing with a wayside coil. SOLUTION: In a state where the train moves from a track circuit 3T toward a track circuit 5T, a train detection signal TD1 is sent from the boundary between the track circuits 3T and 5T to the respective track circuits 3T and 5T, and the train detection signal TD1 is received by the train, the signal strength rapidly and largely decreases just after the axle of the train passes through the boundary between the track circuits 3T and 5T. This condition allows the train to be determined to pass through the boundary between the track circuits 3T and 5T. Therefore, when absolute positional information of the track circuit 5T is previously held by the train, the own train position can be easily detected as the moving distance by correcting (substituting) the moving distance calculated from a pulse output from a speed power generator to the absolute positional information of the track circuit 5T, and after that updating it with the pulse output. COPYRIGHT: (C)2005,JPO&NCIPI
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