| Nowadays, China’s high-speed rail has been able to achieve a momentum of rapid development in a short time. Due to increasingly sophisticated Chinese train control system, while the centralized traffic control system has been fully applied to high-speed rail and has been stepping into the optimization phase which in the layer of management in CTCSCTC provides a panoramic display of stations and sections for dispatchers and station attendants. It’s a real-time display of trains’ operating conditions for efficient dispatching jobs. Chinese Railway Corporation emphasized to add the function of train-occupancy lost alarm to TDCS/CTC in order to avoid similar accidents after the train crash of line Yongwen. The core principle of train-occupancy lost alarm is based on the technology of train tracking in CTC. The technology of train tracking is a difficulty in achieving the function of train-occupancy lost alarm.Based on the CTC upgrading project of Hainan East loop line, this paper analyzed the technical requirement of train tracking; designed the technology program through the study of maintenance of train number, train logic tracking and so onthe program can avoid train tracking error when the track circuit in failure; designed the program of train-occupancy lost alarm on the basis of achieving the right train tracking; and used the strong portability Linux operating system and object-oriented C++ language to achieve the functions of train tracking and train-occupancy lost alarm, and achieved the module of running simulation in interlocking simulation system which is required in test of functions by programming, and a test was done for the functions of train tracking and train-occupancy lost alarm.The testing result show that the realized functions of train tracking and train-occupancy lost alarm all can meet the requirements of design, and CTC got further optimization. At the same time the new function have played a positive role in the CTC upgrading project of Guangzhou-Shenzhen line. |
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