小波变换在胎心率检测中的应用

Application of Wavelet Transform in Fetal Heart Rate Detection

针对胎心原始信号成分复杂、干扰严重、胎心率提取困难的问题,提出一种新的胎心信号处理方法——基于二进制小波变换模极大值的胎心率检测方法。仿真结果表明,该方法能准确地从超声多谱勒信号中提取胎心率,成功地解决了现有的胎心监护仪存在的加倍、减半的问题。

The components of the original signals of fetal heart rate （FHR） are complex which are seriously interfered by many factors, thus it is difficult to abstract FHR. A new method for detecting FHR-the local modulus maxima of binary wavelet transform method is proposed. Simulation results indicate that the method can detect FHR from the Doppler ultrasonic signals and solve the problems of frequency doubling and halving.