通过VISA与串行接口仪器通信，用Labview做核心处理部分，实时显示出脉搏信号波形，并将数据进行分析和处理，得到人体脉搏跳动的幅值和频率。-Through VISA and serial interface communication instrument, using Labview do core processing part, real-time display the pulse signal waveform, and the data analysis and processi