Method of movement authority calculation for communications-based train control system

摘要

The present invention discloses a calculation method of movement authority for communications-based train control system, comprising: handling a route information for a train, and determining a searching range of the train according to the route information; initializing the limit of movement authority with the end position of the searching range; searching for static obstacles within the searching range, and successively determining whether each static obstacle meets the safety requirements for train operating, if not, setting the position of the last static obstacle within the searching range as the limit of the movement authority; if so, modifying the limit of movement authority as the end of route having been matched; searching for dynamic obstacles within the searching range, and determining whether there is a train, if so, modifying the end of movement authority as the beginning point of the track section where the train is occupying; if there is no dynamic obstacle within the searching range, modifying the final end of movement authority as the position of the last static obstacle within the searching range. In accordance with the present invention, it is possible to increase line capacity and improve traffic fluidity for rail transit.

主权项

1. A method of movement authority calculation for communications based train control system, characterized in that, it comprises:
step A1, handling a route information for a train by a zone controller, and determining a searching range of the train according to the route information; step A2, initializing the end of movement authority with the position of the terminal point of the searching range; step A3, searching for static obstacles within the searching range, and successively determining whether each of the static obstacles meets the demand for safe train operation; if not, setting the position of the last static obstacle within the searching range as the end of movement authority; if so, modifying the end of movement authority as the end of the route having been matched; step A4, searching for dynamic obstacles within the searching range, and determining whether there is any train tracking; if so, modifying the end of movement authority as the start point of the track section where the train locates; if there is no dynamic obstacle within the searching range, modifying the final end of movement authority as the position of the last static obstacle within the searching range wherein the step A4 further comprises: step A41, searching for leading trains according to a sequence of train operation; step A42, determining whether there is a leading train within the searching range, if so, performing step A43, determining whether the leading train is a communication train, otherwise, then performing step A43′, setting the position of the last obstacle within the searching range as the final end of movement authority; step A43, determining whether the leading train is a communication train; if so, performing step A44, determining whether the leading train served as a communication train carries an undetermined flag at the rear, otherwise, then performing step A44′, withdrawing the movement authority set in step A34, which sets the end of movement authority of the last static obstacle as the end of the route having been matched, according to a separation principle for train control; and step A44, determining by the zone controller whether the leading train served as a communication train carries an undetermined flag at the rear; if so, performing step A45′, setting the start point of the track section where the train locates as the end of movement authority, otherwise, then performing step A45, determining by the controller the movement authority according to a position reported by the leading train and moving the train to the end of the movement authority determined by the zone controller.