韩春霞

摘 要： 通过对雷击信号的实时准确检测，为高压电气等设备的防雷击监测奠定基础。传统的雷击信号检测方法采用时频参量估计方法，在强电磁干扰下检测性能差。提出一种基于无线传感网络的雷击信号检测平台设计方法。通过无线传感器网络进行原始的雷击信号参量等数据信息的采集，设计的雷击信号的检测平台的硬件电路，包括A/D采样电路、信号滤波电路、雷击信号的时钟控制电路、程序加载电路、接口电路等；进行雷击信号检测平台的软件开发，基于Qt/Embedded的应用软件开发雷击信号检测平台的脚本，设计波形数据存储界面，进行可视化模块设计，通过雷击信号的波形输出和人机交互，完成雷击信号检测平台设计。仿真结果表明，该平台进行雷击信号检测的性能较好，准确检测概率较高。

关键词： 雷击信号检测； 无线传感网络； 实时检测； 防雷击监测

中图分类号： TN915?34； TN911 文献标识码： A 文章编号： 1004?373X（2016）24?0162?05

Design of lightning signal detection platform based on wireless sensor network

HAN Chunxia

（Information Engineering College， Tongren University， Tongren 554300， China）

Abstract： A foundation for the lightning protection monitoring of high voltage electrical equipments was laid by using the real?time accurate detection of lightning signal. The time?frequency parameter estimation is adopted in the traditional lightning signal detection method， whose detection performance is poor under strong electromagnetic interference. A design method of the lightning signal detection platform based on wireless sensor network is proposed in this paper. The original lightning signal parameters are collected through the wireless sensor network （WSN）. The hardware circuit of the designed lightning signal detection platform includes A/D sampling circuit， signal filter circuit， clock control circuit of lightning signal， program loaded circuit， interface circuit， etc. Software of the lightning signal detection platform was developed. The waveform data storage interface was designed on the basis of the application software development of lightning signal detection platform based on Qt/Embedded script to realize visualization module design. The lightning signal detection platform design was completed by lightning signal waveform output and human?computer interaction. The simulation results show that the lightning signal detection platform has a good performance and accurate detection probability.

Keywords： lightning signal detection； wireless sensor network； real?time detection； lightning protection monitoring

0 引 言

高压电气设备在受到雷击后，会产生强烈的放电脉冲，释放出的高频电流导致电气设备的损坏，需要对雷击脉冲信号进行准确的预测和判断。通过对雷击信号的强度、周期、频谱等参量的准确估计，提高对雷击灾害的预防和监测能力。在雷击监测系统中，对雷击信号的准确检测是预防雷击的重要环节，对雷击信号检测平台进行合理有效设计，可以准确检测雷击信号，具有重要的现实意义。

传统方法对雷击信号进行检测主要采用基于时频分析的信号检测方法、基于分数阶傅里叶变换的雷击信号检测方法和基于小波分析的雷击信号检测方法等[1?4]。……