动态脉搏信号的采集与处理

Dynamic Pulse Signal Acquisition and Processing

为实现脉搏信号的实时采集与处理,根据动态脉搏信号的噪声特点,设计了整系数陷波、低通滤波器,并提出了包络滤波法。应用MATLAB仿真软件进行验证,并通过简化编程,在DSP上实现对脉搏信号的实时滤波。通过DSP系统对脉搏信号进行时域和频域分析,实时计算其波高、脉率并对其进行FFT变换。结果表明,设计的系统能有效抑制脉搏信号中的噪声,可实现动态脉搏信号的实时检测与处理。

In order to obtain and process pulse signal in real-time the integer coefficients notch, low-pass filters and an envelope filtering method were designed in consideration of the characteristics of disturbances in pulse signal, and then were verified by MATLAB. The pulse signal was processed on DSP in time domain and frequency domain after simplifying the programming. The pulse wave height and pulse rate were calculated in real-time, and the pulse signal＇ s spectrum was illustrated by FFT. The results show that the filters can effectively suppress the interference in pulse signal, and the system can detect and analyze the dynamic pulse signal in real-time.