| 摘要 |
PURPOSE:To get rid of any crossing closure time of more than necessity by calculating a braking distance from the braking performance of a train and some conditions of a route, and determining the extent of control timing in a control point by the braking distance, train speed and a distance of up to the train and this control point. CONSTITUTION:A sensor 2 on a train detects the speed of its own train in succession, and an operational part 6 calculates a braking distance from speed, braking performance and route data at that time. On the other hand, an integrating part 3 integrates the extent of output from the speed sensor 2 successively, recognizing the current position, and the current position of a train, the current speed and the braking distance are all transmitted to the ground from the onboard via a transmitting apart 9 and a transmitting antenna 10. In this constitution, control timing in a control point is determined at such timing as satisfying those of relations of xd=xb+v/3.6Xt1 between time t1 till elimination of an obstacle after control starting is checkable and a distance xd between crossing and train as well as between a train speed V and a train braking distance xb. |
