Research on Design Scheme for Key Points of Train Autonomous Control System Engineering Based on Vehicle-vehicle Communication
As a new generation of train control system for urban rail transit,the application of TACS in China is still in its early stage.In engineering practice,there are problems such as insufficient redundancy,poor compatibility,and lack of backup operation modes,which make it difficult to meet the operational requirements of high safety and high reliability of the TACS.Based on the signal system engineering of Shenzhen Metro Line 20,the key application problems of TACS,such as wireless communication technical scheme,backup mode,train control in depot and liaison line interface,are deeply studied to establish the design of key points of feasible engineering.The results show that LTE-A/B+WLAN scheme can increase the redundancy of wireless communication system,the backup mode of degraded operation system based on train autonomous positioning simplify system structure,the non-automated area of the car depot included in the control of the ATC system and the operation mode set as manned driving can realize double protection by the system and the driver,and the special interface module for the liaison line interface can effectively solve the problem of boundary management.All these research results provide some technical support for promoting the application of the TACS.
Urban rail transitTrain Autonomous Control System(TACS)CBTC SystemVehicle-vehicle communicationWireless communication systemBackup modeDepotLiaison line
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