光纤传感器在铁路周边安全监控中的应用

Application of Optical Fiber Sensor in Safety Monitoring of Railway Perimeter

铁路具有地域分散,沿线距离长,自然环境复杂多变的特点,通常难以保证其周界安全。建立有效的安全监测系统,准确识别铁路周界的威胁因素,具有重要的理论和应用价值。本文介绍了当前主流的周边安全技术,分析了M-Z干涉传感器的工作原理,设计了铁路光纤周边安全监控系统,重点研究了多通道数据的采集与处理以及入侵振动数据的提取。结果表明,该系统的整体传感精度高达92.2%,可以满足实际应用要求。

Railway exhibits the characteristics of geographical dispersion,long distance along the line,complex and changeable natural environment,and its perimeter safety is usually difficult to be guaranteed.It has important theoretical and application value to build an efficient safety monitoring system to accurately identify the security risks of railway perimeter.This paper introduces the current mainstream perimeter security technology,analyzes the working principle of M-Z interference sensor,designs a railway optical fiber perimeter security monitoring system,and focuses on multichannel data acquisition and processing and intrusion vibration data extraction.The results show that the overall sensing accuracy of the system can reach 92.2%,which can meet the practical application requirements.