Research on key technologies for fault diagnosis of wireless communication timeout in CTCS-3 train control system

In China's core operation guarantee system for high-speed railways, the CTCS-3 train operation control system based on the GSM-R network is a key technical support for realizing high-speed, safe and efficient train operation. With the rapid development of high-speed railways, the CTCS-3 wireless communication timeout fault has become a prominent hidden danger affecting the operation quality of high-speed railways. This paper selects the Guangzhou-Shantou High-speed Railway, Wuhan-Guangzhou High-speed Railway and Ganzhou-Shenzhen High-speed Railway as the research objects. A large amount of data on wireless communication timeout faults of the CTCS-3 train control system on these lines is obtained from the three interfaces and air interface monitoring data. After massive data cleaning and feature extraction, the FP-Growth algorithm is used for efficient data analysis, and a relevant model is established based on the CART decision tree algorithm. Finally, the verification curve confirms that the model has good generalization ability, realizing accurate fault diagnosis.