基于小波变换过零点表征的脉搏信号分析

目的 探索中医脉诊客观化的新方法。方法 根据小波变换过零点和信号突变点之间的关系．分别运用小波变换过零点表征检测脉象时域特征点和各特征点脉搏信号变化的快慢。结果 通过对20例健康人和20例孕妇脉象时域特征点过零点位置的统计及其变化快慢的计算，分析结果正好与实际相吻合。结论 应用这种方法可以比较准确地分析脉象信号所携带的大量生理信息，从而为中医脉诊客观化提供了一种新方法。

Analysis of Pulse Signal Based on Wavelet Transform Zero-crossing

Objective To find a new method of the objectification of pulse diagnosis. Method The time-domain characteristic point and change of signal saltation edge of pulse signal were examined, according to the relationship between wavelet zero-crossing and signal saltation edge, Result Pulse signal of 20 healthy women and 20 pregnant women were examined by statistic analysis of the time-domaln characteristic point zero-crossing position. The zero-crossing position of the pulse of the time-domain could be found accurately. Conclusion Using this method, a lot of information of the pulse signal can be found. It provides a new method for objectification of pulse diagnosis.