›› 2015, Vol. 28 ›› Issue (8): 81-.

• 论文 • 上一篇    下一篇

基于SSTDR的线缆故障检测算法

李乐乐,江洋,刘宇红   

  1. (贵州大学 大数据与信息工程学院,贵州 贵阳 550025)
  • 出版日期:2015-08-15 发布日期:2015-08-15
  • 作者简介:李乐乐(1988—),男,硕士研究生。研究方向:嵌入式微处理器应用。E-mail:gambx881105@126.com。江洋(1989—),男,硕士研究生。研究方向:嵌入式通信系统。刘宇红(1963—),男,教授,硕士生导师。研究方向:语音与图像处理,DSP与嵌入式微处理器的应用。
  • 基金资助:

    黔科平台基金资助项目([2012]4005)

Research on Cable Fault Detection Algorithm Based on SSTDR

LI Lele,JIANG Yang,LIU Yuhong   

  1. (College of Big Data and Information Engineering,Guizhou University,Guiyang 550025,China)
  • Online:2015-08-15 Published:2015-08-15

摘要:

针对目前线缆故障检测方法对定位结果准确性和可行性的影响,文中利用Matlab的Simulink仿真平台建立线缆故障模型,结合线缆特性建立系统模型,对扩散频谱时域反射方法进行了研究,采用直接序列扩频信号作为测试信号在线缆上传输,进行检测分析,并根据传输时间差等参数判断故障距离。对测试信号的不同调制方法进行仿真分析后,验证了该方法在线缆故障定位中的可行性,以及线缆故障测量中以BPSK和QPSK效果最佳。

关键词: 直接序列扩频, Simulink, SSTDR, 线缆故障

Abstract:

In view of the influence of the current accuracy of cable fault detection method for fault detection and localization results and feasibility,this paper uses the Simulink simulation platform for the establishment of Matlab cable fault model.The cable system model is established to study the spread spectrum time domain reflectometry (SSTDR) methods,using direct sequence spread spectrum signal as the testing signal on the cable transmission to judge the fault distance according to the time difference and other parameters.The feasibility of the cable fault location method is verified by simulation of different modulation methods,indicating that the cable fault location based on the BPSK and QPSK has the best effect.

Key words: direct sequence spread spectrum;Simulink;SSTDR;cable fault

中图分类号: 

  • N914.21