电子装备电缆故障检测及数模同步方法研究  

Research on Fault Diagnosis and Digital-model Synchronization Methods for Electronic Equipment Cables

作　　者：董静怡 米建伟[1] 韩冰 王萍 童杨 宋利 DONG Jingyi;MI Jianwei;HAN Bing;WANG Ping;TONG Yang;SONG Li(Xidian University,Xi’an 710071,China;AVIC Xi’an Aircraft Industry Group Co.,Ltd.,Xi’an 710089,China)

机构地区：[1]西安电子科技大学,陕西西安710071 [2]中航西安飞机工业集团股份有限公司,陕西西安710089

出　　处：《电子机械工程》2025年第2期58-64,共7页Electro-Mechanical Engineering

基　　金：陕西省自然科学基础研究计划(2024JC-DXWT-08)。

摘　　要：随着航空系统、舰船系统等复杂电子装备布线需求的日益增加,电缆网络更加复杂。电缆的使用时间延长,易受电、化学和机械应力影响而产生硬故障以及间歇性故障。电缆故障可能导致系统故障甚至事故,影响系统的安全性和可靠性。文中基于现场可编程门阵列(Field Programmable Gate Array,FPGA)技术,采用扩展频谱时域反射法(Spread Spectrum Time Domain Reflectometry,SSTDR)研究基于SSTDR的电缆故障定位方法。该方法可实现对电缆开路、短路以及间歇性故障的检测与定位。文中利用CATIA软件创建了三维线束模型,在三维线束模型中根据导线信息创建并突出显示故障点,便于线束检修,提高了检修效率。The increasing requirements for cabling of complex electronic equipment such as aerospace systems and ship systems have increased the complexity of cable networks.As the cable usage time grows,the cable is susceptible to hard faults and intermittent faults due to electrical,chemical and mechanical stresses.The cable faults may lead to system faults and even accidents,thus affect the safety and reliability of the system.Based on field programmable gate array(FPGA)technology,the spread spectrum time domain reflectometry(SSTDR)is used to study the cable fault location method based on SSTDR.With this method the cable open circuit,short circuit and intermittent faults can be detected and the faults can be located to the fault points.A three-dimensional wire harness model is built by CATIA software.The fault points are created according to the wire information and highlighted in the wire harness model,which provides convenience for wire harness maintenance and improves maintenance efficiency.

关 键 词：现场可编程门阵列 扩展频谱时域反射法 故障定位 线束设计 数模同步 

分 类 号：TH165.3[机械工程—机械制造及自动化]