Simulation Test of High-speed EMU Network Topology Based on Time-sensitive Network
Ethernet communication provides the technical basis for the intelligence and multi-network convergence of high-speed rolling stock.In response to the excessive line load and line congestion that may result from multi-network convergence,it is necessary to verify the practicality of time-sensitive networks for Ethernet train control.Time-sensitive networks can prioritize data and ensure deterministic transmission of important data.Aiming at the multi-network convergence scenario of high-speed trainset,a network topology simulation model is constructed.By comparing the effects of turning on and off the TSN function when the line is unloaded and fully loaded in the simulation,it is shown that the TSN equipment can stabilize and reduce the time delay of data transmission when the line is fully loaded.Comparison of the performance of single-ring and dual-ring networks under normal and faulty conditions shows that both topologies can maintain communication in the event of a single point of failure,and that the single-ring network maintains its performance better than the dual-ring network under specific faults.Based on the single ring network architecture and TSN switches,a semi-physical simulation of traffic carrying test is carried out,which shows that the single ring network can meet the operational requirements of multi-network convergence.
time-sensitive networktrain communication networkcommunication network simulation
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