Train marking protection system based on fixed-point dual-channel redundant train-ground communication

Abstract

The invention discloses a train marking protection system based on fixed-point dual-channel redundant vehicle-to-ground communication, which is characterized in that it includes: a vehicle-mounted subsystem and a trackside subsystem; wherein: the vehicle-mounted subsystem includes a vehicle-mounted host and A vehicle-ground communication unit LCU; the trackside subsystem includes three LCUs, denoted as LCU_A, LCU_B, and LCU_C; when the train stops at the starting point of the protection area, the vehicle-mounted LCU and LCU_A establish communication, and communicate with each other by transmitting information Detect the status of the other party's equipment; when the vehicle-ground equipment is in good condition, the protection system starts the protection function; when the train is running towards the protection area and receives the speed protection information from LCU_B, the train speed distance protection function of the protection system is triggered; if the train is not in the If the vehicle stops before reaching the end of the protection area, it will receive the position protection information from LCU_C, and trigger the position protection function of the protection system to perform emergency braking on the train. By adopting the system disclosed by the invention, the perfect area protection function can be realized on the basis of not disturbing the protection of the existing railway signal system.

Description

technical field [0001] The invention relates to the technical field of rail transit safety, in particular to a train marking protection system based on fixed-point dual-channel redundant vehicle-to-ground communication. Background technique [0002] In the field of urban rail transit, the train control system based on the digital track circuit, the positioning function of the train is based on the occupancy detection of the track circuit. When passing through a section of track circuit with poor shunt or due to other reasons, the occupancy detection is abnormal, and the train has a fault of inaccurate positioning. When the train is under the automatic operation mode of the non-driver's manual control, when this failure occurs, if it cannot stop at the expected stop, it will cause the occurrence of the train rushing mark (crossing the stop mark) event. If the position of this preset parking spot is special, such as the stall position at the end of the elevated line, the trai...

AI Technical Summary

Problems solved by technology

[0010] The speed sensor has high speed measurement accuracy, but it is difficult to add a new speed sensor to the existing on-board equipment, and it is difficult to require the train to provide an additional axle (usually the speed sensor needs to be installed at the end of the axle of the train). The existing equipment shares the speed sensor to avoid the possible negative impact on the existing train control system due to equipment access

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