Research on Data Storage Unit for Interoperation CBTC System

To overcame the shortcoming that the CBTC interoperable system cannot deal with temporary speed limit informaiton across ZC control zone, a new interoperable DSU structure incorporated into the existing CBTC is studied and designed. Interface between subsystems and Data Storage Unit (DSU) systems changes are illustrated and analyzed, and also the interactions between subsystems are given. Based on characteristics of interoperation CBTC system, a novel DSU system architecture is designed, its modules are divided into the temporary speed restriction module, line database module and system maintenance module. Performance test of DSU system is conducted in the interoperation test platform in Chongqing. The results show that DSU system can meet the requirement that trains can cross the line and improve the efficiency of interoperable operation.