继电器试验中高频信号采集技术的研究

Study on High Speed Data Collection System in Contactor Testing

介绍了数据采集系统的工作原理,对系统中各个环节的参数进行了分析计算。以DSP为核心组成了高速数据采集系统板,充分利用易扩展的优点,继电器分析电路时产生的过电压信号进行采集,应用当时的数字信号处理知识,数字滤波及快速傅立叶变换,对所采集的信号进行幅值与频率的分析与处理,并与记忆示波器所测得的波形进行验证比较,得出实际的过电压波形。

This paper.based on DSP,introduces high-speed data collection system and its working principles . The parameter of each segment in the system is analyzed and calculated. The high-speed data collection board based on DSP has such advantages as easy to expand fully of DSP,and use this board to collect over-voltage,use the current digital signal to pro鏴ss knowledge,such as FFT and digital filter.to analyze frequency and amplitude.and to get the true over-voltage waveform.