Objective Coupling and uncoupling technology enables dynamic adjustment of train formations. However, its practical operation is constrained by platform alignment challenges arising from different train formations. Therefore, it is necessary to study the interface design between the TACS (train autonomous circumambulation system) and PSDS (platform screen door system), with the aim of improving operational reliability and efficiency.

Method By analyzing the hardwire and network interface characteristics between TACS and PSDS, also considering train docking methods and stopping position information during forward and reverse operation, two interface design proposals are put forward, i.e. adding platform door opening and closing relays corresponding to different train formations and enhancing network interface information.

Result & Conclusion When a train stops only aligned with the center of the platform or is fixed to stop aligned with one end of the platform, only platform door opening and closing relays corresponding to the train formation need to be added on each side of the platform. After the train arrives at the station and stops accurately, the TACS issues platform door opening and closing commands corresponding to the train formation, and the PSDS controls the opening and closing of the corresponding platform doors. When trains stop aligned with the end of the platform rather than being fixed at one end, meanwhile considering the forward and reverse operation directions, an additional set of platform door opening and closing relays must be separately configured on each side of the platform for shorter train formations. The solution of enhancing network interface information imposes higher security requirements on the network interface. Moreover, since the PSDS determines which platform doors should open or close, modifications to its door control logic and relevant safety certifications are required.