Analyzes the hazard to the low voltage equipment by the direct lightning, inductive lightning and lightning surge, puts forward the proposals on how to protect the railway signal equipment from damage of lightning.

This paper introduces the application of railway signal equipments and the teaching of railway signal in higher vocationalcolleges at present, and the opportunities for the development of vocational railway technological colleges.

With the rapid development of railway transportation, the schedule maintenance mode of railway signal equipment is turning into advanced condition based maintenance mode.

To facilitate management of the personnel responsible for the patrolling railway signal devices,a new patrol system was devised by incorporating GPS and RFID technologies.

Based on the project "Railway signal device troubleshooting decision support system", there are three modules in this thesis:Firstly, I make analysis on the mechanism and work processes of railway signal device failures maintenance, design and realized the railway signal device failures maintenance expert system, providing solutions and decision support for the signal device failures.

According to the goal in the Diagnose Expert System for railway station signal equipment,it was adopted object-orient structural knowledge representation in the design and implementation of knowledge database for Diagnose Expert System.

Development and study on Railway Intelligent Signal Simulation Case;