Application of 10G Ethernet Communication in Train Autonomous Control System of Urban Rail Transit

The development of digitization and intelligence of train control and signal system of rail transit has improved the level of autonomy and transportation efficiency. However, the high-speed and low-delay transmission of big data has become a bottleneck that limits the development of autonomous train control. To overcome the above challenge, we propose an autonomous train control system of urban rail transit with simplified system architecture and refine resource allocation and optimized safety management based on 10 Gigabit Ethernet communication. And a case study was conducted on the key technologies of high-reliability, high-speed, and large-flow data communication in the train’s autonomous control system. The simulation is carried out by building a 10 Gigabit Ethernet data communication test platform based on FPGA (Field Programmable Gate Array). The results show that: FPGA GTX transceiver is used to transmit 1.0G bytes data at the communication rate of 10.0 Gbit/s and there is no received data error. Besides, the bit error rate (BER) is 2.835e-12 and the eye diagram has good openness, high signal integrity, and reliability, which provides technical support for the engineering of train autonomous control.