电工技术学报  2018, Vol. 33 Issue (zk2): 263-269    DOI: 10.19595/j.cnki.1000-6753.tces.L80028
电工理论与新技术 |
基于扩频编码的电磁探测系统研究
张来福1, 李士强2, 刘国强2,3, 李艳红2, 杨虹1
1. 山西省电力科学研究院 太原 030001;
2. 中国科学院电工研究所 北京 100190;
3. 中国科学院大学 北京 100049
Research on Electromagnetic Detection System for Spread Spectrum Code
Zhang Laifu1, Li Shiqiang2, Liu Guoqiang2,3, Li Yanhong2, Yang Hong1
1. Shanxi Electric Power Research Institute Taiyuan 030001 China;
2. Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China;
3. University of the Chinese Academy of Sciences Beijing 100049 China
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摘要 输电线路下采空区易造成地表塌陷、地面不均匀沉降等灾害,对地表电力设施构成巨大威胁,对采空区进行有效勘探和评价,能够很大程度降低事故发生的概率。输电线路下采空区相较于一般采空区具有复杂的电磁环境,传统探测方法如高密度电法和瞬变电磁法一般采用加大发射功率的方法来提高信噪比,存在仪器笨重的问题,不利于野外探测。本文基于通信领域扩频编码技术,对发射信号频率进行扩宽处理并结合相关扩频算法,设计一套扩频编码电磁探测系统,该系统能够实现在不加大发射功率的情况下获得较强的抗干扰能力,从而提高探测效率和探测准确度。
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张来福
李士强
刘国强
李艳红
杨虹
关键词 输电线路采空区扩频编码电磁探测系统    
Abstract:The goaf under the transmission line is prone to natural disasters such as surface subsidence and uneven surface subsidence, which poses a great threat to the surface power facilities. The effective exploration and evaluation of goaf can greatly reduce the probability of occurrence of accidents. The goaf under the transmission line has a complicated electromagnetic environment compared with the general goaf. Traditional methods, such as high-density resistivity method and transient electromagnetic method, usually increase transmitted power to improve signal-to-noise ratio, which will make the instrument bulky and not conducive to detection in wild. Based on spread spectrum code technology in communication field, an electromagnetic detection system is studied and designed by widening the frequency of transmitted signal and combining the correlation algorithm of spread spectrum, which can achieve better anti-interference ability without increasing power and improve the detection efficiency and accuracy.
Key wordsTransmission line    goaf    spread spectrum code    electromagnetic detection system   
收稿日期: 2018-05-16      出版日期: 2019-02-15
PACS: TM621.3  
基金资助:国家电网公司科学技术项目(52053016000X)和国家自然科学基金项目(51677181)资助
通讯作者: 李士强 男,1983年生,副研究员,硕士生导师,研究方向为智能电磁探测与成像技术。E-mail: lsq07@mail.iee.ac.cn   
作者简介: 张来福 男,1967年生,博士,研究方向为高压电力设备电气性能及健康状态的检测技术。E-mail: zhanglaifu479@163.com
引用本文:   
张来福, 李士强, 刘国强, 李艳红, 杨虹. 基于扩频编码的电磁探测系统研究[J]. 电工技术学报, 2018, 33(zk2): 263-269. Zhang Laifu, Li Shiqiang, Liu Guoqiang, Li Yanhong, Yang Hong. Research on Electromagnetic Detection System for Spread Spectrum Code. Transactions of China Electrotechnical Society, 2018, 33(zk2): 263-269.
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