基于CS架构的雷电流信号智能检测系统设计  

Design of lightning current signal intelligent detection system based on CS architecture

作　　者：李路[1] 冉亮[1] LI Lu;RAN Liang(Chorujing Lightning protection center,Chonqing 401147,China)

机构地区：[1]重庆市防雷中心

出　　处：《自动化与仪器仪表》2019年第7期80-83,共4页Automation & Instrumentation

基　　金：重庆市气象局软科学研究项目:防雷检测服务规范化管理流程研究(自主项目No.2019【02】)

摘　　要：为了提高对雷电流的智能检测能力,提出一种基于CS架构的雷电流信号智能检测系统设计方案,系统设计分为信号检测算法设计和检测系统的硬件设计。采用非平稳时变信号模型进行雷电流信号建模,提取雷电流信号的扫频特征量,经门限检测后定位到突发电流输出位置,在信号的时域分布上提取雷电流信号的矩峰度系数,结合雷电信号的冲激响应特征量进行频谱特征分离,使用带宽因子进行检测门限设计,实现对雷电流信号的窄带干扰检测:在C/S构架下进行雷电流信号智能检测系统的硬件开发设计,结合DSP进行信号集成处理芯片开发,硬件模块分为信号采集模块、信号滤波检波模块、信号调制解调模块等。测试结果表明,采用该方法进行雷电流信号检测的准确性较高,抗干扰性较好。In order to improve the intelligent detection ability of lightning current,a design scheme of lightning current signal intelligent detection system based on CS architecture is proposed.The system design is divided into signal detection algorithm design and hardware design of detection system.The non-stationary time-varying signal model is used to model the lightning current signal,the sweep characteristic of the lightning current signal is extracted,the output position of the burst current is output after the threshold detection,and the moment kurtosis coefficient of the lightning current signal is extracted in the time domain distribution of the signal.Combined with the impulse response characteristic of lightning signal,the spectrum characteristic is separated,and the detection threshold is designed by using bandwidth factor to detect the narrowband interference of lightning current signal.The hardware design of the intelligent detection system of lightning current signal is carried out under the framework of C/S,and the integrated signal processing chip is developed with DSP.The hardware module is divided into signal acquisition module,signal filter detection module,signal modulation and demodulation module and so on.The test results show that the method is accurate and anti-jamming.

关 键 词：CS架构 雷电流信号 检测 抗干扰 硬件设计 

分 类 号：TP274.5[自动化与计算机技术—检测技术与自动化装置]