摘要
利用铁路既有光缆搭建基于φ-OTDR原理的光纤干涉系统,通过小波信号分析、阈值化处理等信号处理方法,实现对铁路通信光缆安全的在线监测。在重点监测线路施工的同时,根据列车振动信号分析列车运行位置以及铁轨健康状态。在实验过程中,系统以小于3s的报警响应和零漏报率,且定位误差小于10m的实验结果,为铁路通信光缆的安全运用提供借鉴。
An optic interference system based onφ-〇TDR is build by using existing optical cable.By using wavelet signal analysis,threshold processing and other signal processing methods,online monitoring of the safety of railway optical cable is realized.During the test conducted from Baoding to Mancheng,it was validated that the system had alarm response of less than 3 seconds and zero false negative rate with positioning error of less than 10 meters,providing reference for the safe operation of railway cable.
作者
张睿
刘永魁
张昭
贺鑫
Zhang Rui;Liu Yongkui;Zhang Zhao;He Xin
出处
《铁道通信信号》
2019年第3期42-44,共3页
Railway Signalling & Communication
关键词
铁路
光纤传感
定位型
通信光缆
安全监测防护
Railway
Optical fiber sensing
Positioning type
Communication optical cable
Safety monitoring
Protection
