摘要
针对脉搏波信号的标志点检测提出了一种基于小波变换的信号特征检测方法。该方法首先对脉搏波信号在小尺度上进行小波变换,然后利用系数中的极大极小值对来确定原始信号峰值的范围,进而返回原始信号定位峰值点。最后以原始信号的峰值为参照点提取出其他标志点的具体位置。采用此方法进行脉搏波信号的标志点定位,为进一步进行血流动力学参数的计算研究奠定了基础。
A new method based on wavelet transform for detecting sign points of pulse wave signal is presented. Firstly, the pulse wave is transformed on a small-scale using the wavelet transform. Secondly, by using the maximum/minimum pairs of coefficients, the range of original signal peaks is determined, and the peak point is marked on the original signal. Finally, taking the peak point as the reference point, the other sign points can be located. The basic sign points can be marked out by the method. It builds the foundation for the calculation of pulse hemodynamics and clinical application parameters.
出处
《数据采集与处理》
CSCD
北大核心
2006年第B12期40-43,共4页
Journal of Data Acquisition and Processing
基金
"985工程"信息化基础结构关键技术科技创新平台重点资助项目
关键词
脉搏波
小波变换
标志点
pulse wave
wavelet transform
sign point
