Abstract
The intrusion alarm system of fiber optic fence perimeter realizes the early warning of intrusion by sensing the vibration of the defense area. How to detect the intrusion correctly, improve the system alarm accuracy and reduce the false alarm rate is the key problem to be explored. In view of the large amplitude of the jump of the intrusion signal and the discontinuous action process, and the disturbance generated by the environment is generally random and disorderly. In this paper, the method based on mean filtering and contrast detection is adopted to detect the intrusion signal. Through the actual data verification, this method can accurately realize the alarm of the intrusion signal and has strong robustness.
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