| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To make an operation management center side predict a train position at the interruption of a general-purpose radio telephone, so that the train position can be always continuously grasped even in the operation management center. <P>SOLUTION: The train position synchronization system is provided with an in-vehicle device 60 mounted in the train 20, performing train position detection (34) based on GPS position measurement (33) and transmitting position information by data communication (VPN) utilizing a general-purpose radio telephone network (63) at all times; and a center processing device 51 for grasping the position of the train 20 by obtaining the position information of the train 20 from the in-vehicle device 60 by the data communication (VPN) utilizing the general-purpose radio telephone network (52). The center processing device 51 retains the operation information 73 of the train 20 previously data-set and continuously grasps the position of the train 20 by estimating (71) the position of the train 20 based on the operation information 73 at the interruption of data communication (VPN). <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
