| 摘要 |
PROBLEM TO BE SOLVED: To provide a train length calculating method considering an error in speed information. SOLUTION: An onboard element 5 reads the ID of a ground element 7, and an onboard controller 2 calculates the present position from map data of tracks for a track DB3 from the ID. The head position accompanying the traveling of a train is calculated by adding a moving distance for which the speed information of a speedometer 6 is integrated from the positional information. A length for which the train length is added to the head position becomes an occupied section of the train during traveling, and the ATACS manages it as the on-track position of the train. In this case, by taking the error in the speed information under consideration, a value for which a margin value (a train length compensating value) of a specified ratio is respectively added to the head position and the tail position of the train to an actual train length is made the train length which is used for the control. The train length compensating value is reset by detecting the ground element 7. COPYRIGHT: (C)2006,JPO&NCIPI
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