摘要
针对光电复合缆断点隐蔽、路径复杂等因素导致的断点定位困难问题,文中设计了一种OTDR-Sagnac融合检测的光电复合缆光纤断点定位仪。通过分析OTDR和Sagnac的基本原理,设计了信号采集与脉冲触发模块、信号处理模块、LCD显示与触摸控制模块,并通过光开关实现OTDR和Sagnac的灵活切换。设计采用OTDR初步测量光纤断点以缩小断点定位范围,结合直线型Sagnac振动传感器对比分析振动波形特征,实现光纤断点精确定位。装置实现了100 km的光纤长度测量和0.1~20 kHz频率范围的振动检测。实验结果表明:定位仪断点检测误差在±2 m以内,为光电复合缆光纤断点的快速精确定位提供了技术支持。
Aiming at the difficulty of locating breakpoints caused by hidden breakpoints and complex paths of photoelectric composite cables,this paper designed a fiber breakpoint locator for photoelectric composite cables with OTDR-Sagnac fusion detection.By analyzing the basic principles of OTDR and Sagnac,the signal acquisition and pulse triggering module,signal processing module,and LCD display and touch control module were designed to realize the flexible switching of OTDR and Sagnac through optical switch.This design used OTDR to initially measure the fiber breakpoint to narrow down the breakpoint location range,and combined the linear Sagnac vibration sensor to compare and analyze the vibration waveform characteristics to achieve the precise location of the fiber breakpoint.The device achieved 100 km fiber length measurement and vibration detection in the frequency range of 0.1~20 kHz.The experimental results show that the locator breakpoint detection error is within±2 m,which provides technical support for the rapid and precise location of fiber breakpoints in photoelectric composite cables.
作者
于文杰
高妍
张红娟
靳宝全
YU Wenjie;GAO Yan;ZHANG Hongjuan;JIN Baoquan(College of Electrical and Power Engineering,Taiyuan University of Technology;College of Electronic Information Engineering,Taiyuan University of Technology;Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education,Taiyuan University of Technology)
出处
《仪表技术与传感器》
北大核心
2025年第7期37-42,120,共7页
Instrument Technique and Sensor
基金
中央引导地方科技发展资金项目(YDZJSX20231B004)
山西省科技创新团队项目(201805D131003)。
