Optimization algorithm for fetal heart rate detecting based on ultrasonic sensor

HUANG Xin-an

doi:10.13873/J.1000-9787(2016)04-0144-04

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Optimization algorithm for fetal heart rate detecting based on ultrasonic sensor

更新时间：2025-09-11

- Optimization algorithm for fetal heart rate detecting based on ultrasonic sensor
- Vol. 35, Issue 4, Pages: 144-147(2016)
- 作者机构：
  
  江南大学物联网工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2016)04-0144-04
  CLC： TH77;TP212
- Published：2016
- 稿件说明：
移动端阅览
[1]黄新安.基于超声传感器的胎心率检测优化算法[J].传感器与微系统,2016,35(04):144-147.

HUANG Xin-an. Optimization algorithm for fetal heart rate detecting based on ultrasonic sensor[J]. 2016, 35(4): 144-147.
[1]黄新安.基于超声传感器的胎心率检测优化算法[J].传感器与微系统,2016,35(04):144-147. DOI： 10.13873/J.1000-9787(2016)04-0144-04.

HUANG Xin-an. Optimization algorithm for fetal heart rate detecting based on ultrasonic sensor[J]. 2016, 35(4): 144-147. DOI： 10.13873/J.1000-9787(2016)04-0144-04.

摘要

获得胎心率信号的方法有多种

而以超声传感器检测法应用最广。然而如何在嵌入式实时系统中快速、准确地从含有噪声干扰的超声多普勒回波信号中提取胎心率信号成为一个难点。针对该难点

提出了一种基于经验模态分解（EMD）与提升小波变换相结合的去噪方法

再将去噪后的胎心信号采用希尔伯特变换提取信号包络

最后通过自相关运算得出胎心率。实验结果表明:采用这种方法能够有效提取到胎心率信号

使得胎心率计算耗时大大减少

同时

计算的准确性得到提高。

Abstract

There are many ways to obtain FHR signal

and the most common way is to use ultrasonic sensor.However

it is a challenge to quickly and accurately extract pure fetal heart signal from Doppler fetal heart echo signal which has a lot of noise interference in embedded real time system. Considering the difficulty

a new kind of denoising method based on empirical mode decomposition（ EMD） and lifting wavelet transform is constructed.Then use the Hilbert transform to extract envelope of signal and get fetal heart rate through autocorrelation operation. The experimental results show that the algorithm can effectively extract fetal heart rate signal

greatly reduce heart rate calculation time and improved veracity of calculation.

关键词

Keywords

references

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