每0.001采集1个数据，前150个数据全为零，然后采集到20个为1的数据，之后又采集到50个为零的数据，对上述数据进行数字FFT分析，然后给出源信号与频谱信号的图-0.001 per 1 data collection, the first 150 data all zero, then the collected data from 20 to 1, followed by 50 zero collected data on the number of FFT analysis of the data, and then gives the source signal and Spectrum Signal Chart