摘要
脉搏波速度(PWV)是心血管病变的重要指标,因此PWV的测量对血管疾病的预防和治疗有很大的帮助。测量系统采集的脉搏信号中的噪声、量化误差以及参考点的选取,直接影响测量结果的精度。本文利用小波变换去除脉搏信号中的干扰,平滑重构脉搏信号后用波形上升沿的斜率最大值点作为波速参考点,提高了PWV测量系统的精度。
Pulse wave velocity（PWV） is a vital index of the cardiovascular pathology,so that the accurate measurement of PWV can be of benefit for prevention and treatment of cardiovascular diseases.The noise in the measure system of pulse wave signal,rounding error and selection of the recording site all cause errors in the measure result.In this paper,with wavelet transformation to eliminate the noise and to raise the precision,and with the choice of the point whose slope was maximum as the recording site of the reconstructing pulse wave,the measuring system accuracy was improved.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2011年第1期54-57,共4页
Journal of Biomedical Engineering
关键词
脉搏波速度
小波去噪
波速参考点
斜率最大值
Pulse wave velocity（PWV）
Wavelet de-noising
The recording site of pulse wave velocity
Line of greatest slope
