Optimization of Interface Content between Shanghai Rail Transit Audio Video Unified Information Service System and Signaling System

Objective To improve the real-time, accuracy, and efficiency of information services, and enhance the operational service efficiency and quality of Shanghai rail transit, it is essential to optimize the interface content between the audio video unified information service system and the signaling system. Method Starting from the architecture and deficiencies of the interface content between the existing audio video unified information service and the signaling system of Shanghai Rail Transit, the requirements for interface content optimization and the architecture of the optimized interface content are sorted out. By incorporating typical operational scenarios, the optimized primary functions of interface content are discussed. Result & Conclusion By adopting a primary-backup redundant dual-link transmission architecture, the optimized interface content enhances both redundancy and security of the interface. When partial adjustments are needed during operations, using unified interface content to define terminal stations could eliminate the risk of broadcast errors. For FAO (fully automatic operation) scenarios, a first and last train marker function added in the interface content reduces the workload for manual updates, allowing the signaling and the audio video unified information service systems to adapt to adjustments in operation diagram automatically.