摘要
针对光电跟踪设备已有在线故障监测存在的盲点,对线缆信号传输故障检测方法进行了研究。利用线缆在故障位置阻抗不匹配原理,设计一种抗干扰性强和具有良好相关性的测试信号,通过信号发生器注入测试信号,利用数据采集卡采集反射信号,并消除因信号叠加产生的交叉项后,最后通过测试信号和采集的信号的相关性分析来确定线缆故障位置和故障类型,得到设备的故障单元。通过实验并与扩展频谱时域反射法进行性能对比,验证该方法的检测性能、稳定性及工程实用性。
Aiming at the blind spot of on-line fault monitoring of photoelectric tracking equipment,the cable signal transmission fault detection method is studied.The cable detection is based on the principle of impedance mismatch at the fault location,and on the basis of the reflection method,a design with strong anti-interference and no communication influence and good correlation with the test signal,using the signal generator and the data acquisition system to inject the signal and collect the reflected signal,and eliminating the cross term caused by the signal superposition of the collected signal,and finally determining the cable fault location and fault type by the correlation analysis of test signal and the collected signal,and obtaining the fault unit of the equipment.Verifying the detection performance,stability and engineering practicability of this method by comparing performance with the spread spectrum time domain reflectance method.
作者
刘红
周国忠
Liu Hong;Zhou Guozhong(Key Laboratory of Optical Engineering,Chinese Academy of Sciences,Chengdu 610209,China;Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China;University of Chinese Academy of Sciences,Beijing 101400,China)
出处
《电子测量技术》
北大核心
2021年第7期100-106,共7页
Electronic Measurement Technology
关键词
光电跟踪设备
线缆
阻抗
测试信号
photoelectric tracking equipment
cable
impedance
test signal
