Abstract: In order to perfect the perimeter invasion alarm system for high speed railway, the front-end monitoring technology of the perimeter intrusion system was compared and analyzed. Through investigating the use of the system in the test section, from the perspective of accumulating feature data, improving the ability of emergency response, reducing the blind area of the camera, and reducing the false alarm rate, the problems existing in the trial stage of the system were analyzed, and according to the current situation of national standards and industry standards, the relevant suggestions were put forward. The analysis shows that this system can effectively reduce the intrusion of foreign objects into the boundary of high-speed railways by collecting, analyzing, tracking, and manually calculating the target′s behavior, and making intelligent video analysis based on computers, so as to achieve the purpose of judging and warning the invading things. However, further optimization is still needed.

Key words: high speed railway, perimeter invasion, sending an alarm, vibration fiber, prevention