EMC problem in a train control system based on wireless communications

A wireless locomotive signal system (WLSS) is the kernel of a new train control system. Applying the wireless communication system as a flat roof of information transmission, the system has achieved bipolar transmission between the vehicle and the console of the railway station. Different from the traditional locomotive signal system that uses track circuits as information transmitting channels, a WLSS has the advantages that the functions of communications and control are integrated and the capacity of information transmitting is large. The author attended to the research work of the system. Based on the working principles of the system, this paper mainly discusses the EMC problems in the system and puts forward the solutions.