Research on Failure Processing of Axle Counter in CBTC System

Objective The communication-based train control (CBTC) system usually uses the axle counter to provide train auxiliary positioning functions. However, in the case of axle counter failure, if it is always processed as "occupied", the system operating efficiency will be significantly affected; while if it is chosen to be processed as "idle" when there is no vehicle in reality, this processing method should not reduce the system safety. So it is necessary to research how to process axle counter faults in CBTC system. Method Based on the requirements of IEEE 1474 series international standards and CZJS/T 0033—2015 Interface Specification of Communication Based Train Control System for Urban Rail Transit-Interface Specification for Interoperability-General System Requirements for Interoperability, the state processing of the axle counter section inside the CBTC system is analyzed, and the state machine model of the axle counter section inside the CBTC system is proposed, and the method of processing the axle count