指脉脉搏波自动识别及自动采集控制方法

Method of Finger Pulse Waveform Automatic Identification and Detection Automatic Control

提出一种指脉脉搏波自动识别及采集自动控制方法.以手指伸入传感器后脉搏波采样值的变化自动启动采集;通过对采集信号的模拟和数字滤波以及基线漂移的滤除,得到有效的脉搏波波形;利用差分阈值法提取脉搏波的起始点得到单个的脉搏波;依据单个脉搏波的异常类型对脉搏波进行自动识别;当连续3屏的脉搏波特征参数平均值绝对误差小于0.005时,自动停止脉搏波采集.实际测量实验表明:该方法能对脉搏波有效性进行判断和对脉搏波检测进行自动控制,可应用在指脉脉搏波检测中.

This paper presents a method of pulse waveform automatic judgment and detection automatic control. Pulse waveform detecting automatically started by the judgment of sampling value change caused by transducer clamping on finger. The effective pulse waveform was obtained after analog and digital filtering of pulse wave signal and removal of baseline drift. Single pulse waveform was obtained by the extraction of starting points utilizing the differential threshold method. Single pulse waveform was automatically identified based on classification of single pulse wave pulse waveforms. Pulse waveform detecting automatically stopped by the judgment of the absolute errors of continuous three-screen average pulse waveform characteristic values less than 0. 005. Results of actual measurement experiments show that pulse waveform can be effectively identified and detection of pulse waveform can be automatically controlled . This method has a wide range of applications in pulse wave detection.