Design of the reliable collection and control scheme of the relay node status of the train carborne control system

Train operation control system is the core of urban rail transit system, and the train carborne control system is an important part of the whole train operation control systems, and its reliability will directly affect the safety of the train. In this paper, two out of three closed-loop dynamic input detection technology and hardware dynamic two out of two voting output technology and time synchronization technology were used to design relay node status acquisition and control scheme of the train carborne control system respectively, and effectively guaranteed the reliability of relay node status acquisition and control of the train carborne control system and therefore ensure the safety of operation of the train.