电缆故障在线检测定位装置研究  

Research on Cable Fault Online Detecting and Locating Device

作　　者：高闯[1] 王莉[1] 杨善水[1] Gao Chuang;Wang Li;Yang Shanshui(College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211100,China)

机构地区：[1]南京航空航天大学自动化学院,南京211100

出　　处：《航空工程进展》2018年第3期447-450,共4页Advances in Aeronautical Science and Engineering

基　　金：国家自然科学基金(51277093)

摘　　要：电缆作为飞机电源系统的重要组成部分,实现电缆故障的在线诊断,可以提高其可靠性。采用扩展频谱时域反射法(SSTDR),基于FPGA技术,设计一种板级速率为500 MHz的飞机电缆故障在线检测和定位装置,并进行实验验证。结果表明:该装置能够实现电缆开路、短路以及间歇性电弧的在线检测和定位,具有定位精度高、实时性好等优点;利用该装置在线监测电缆的健康状态,实现难以复现的间歇性故障的检测,能够提高地面运营、维护效率,节省人力物力,具有较高的工程应用价值。As an important part of aircraft power supply system,cable is particularly important to realize cable fault online diagnosis.The cable reliability can be improved by using the spread spectrum time domain reflectometry（SSTDR）.Based on FPGA technology a cable fault online detecting and locating device with the 500 MHz board level rate is designed and verified by experiment.Results show that the instrument can realize the online detection and location of the open circuit,short circuit and intermittent arc of cables,and has the advantages of high positioning accuracy and good real-time performance.Using this device to monitor the health state of the cable fault on-line and realize the detection of the intermittent fault which is difficult to reappear.It can improve the efficiency of ground operation and maintenance,save a lot of manpower and material resources and has higher engineering value.

关 键 词：飞机电缆故障 电缆故障检测与定位 扩展频谱时域反射法 传输线理论 

分 类 号：TH89[机械工程—仪器科学与技术]