Method and device for detecting instant heart rate of fetus on basis of Shanon envelope

A Shannon envelope, instantaneous heart rate technology, applied in the measurement of pulse/heart rate, medical science, acoustic wave diagnosis, etc., can solve problems such as insufficient effect and difficult detection of autocorrelation function waveform, and achieve reliable performance, simple structure, and easy application. Effect

Inactive Publication Date: 2015-02-25
GUANGDONG UNIV OF TECH
View PDF7 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using the autocorrelation method to extract the fetal heart rate signal, the effect is not good enough, mainly because the fetal heart sound signal is periodic, but not a deterministic periodic signal, and the fetal heart sound signal w...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for detecting instant heart rate of fetus on basis of Shanon envelope
  • Method and device for detecting instant heart rate of fetus on basis of Shanon envelope
  • Method and device for detecting instant heart rate of fetus on basis of Shanon envelope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] The present invention will be further described below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0063] Such as figure 1 Shown, a kind of fetal instantaneous heart rate detection method based on Shannon envelope, comprises the following steps:

[0064] S1. collect fetal heart sound signal, figure 2 is the fetal heart sound signal collected by the ultrasonic Doppler fetal heart rate meter, wherein the sampling frequency f s =2205Hz;

[0065] S2. pre-processing, the collected fetal heart sound signal is filtered by a Butterworth low-pass filter, and the cut-off frequency f of the filter is c =882Hz, then normalize the signal amplitude, find the maximum value of the absolute value of the signal, divide all the signals by the maximum value in turn, and obtain the preprocessed signal, such as image 3 shown;

[0066] S3. Calculate the Shannon envelope according to the obtained preprocessing sig...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method and device for detecting the instant heart rate of a fetus on the basis of a Shanon envelope. The method comprises the steps of collecting the heart sound signals of the fetus; carrying out smoothing and normalization on the collected signals so as to obtain pre-processed signals; calculating the Shanon envelope according to the pre-processed signals, and drawing a Shanon envelope curve; calculating the instant heart rate of the fetus according to the Shanon envelope curve. The method is simple, the result is accurate, and the method can better serve clinic fetal monitoring. The device comprises a data collection unit, a pre-processing unit, a Shanon envelope drawing unit, an instant heart rate calculating unit, a display unit and a printing unit. The device is simple in structure, reliable in performance and convenient to use, and results are displayed directly.

Description

technical field [0001] The invention relates to the field of fetal heart rate monitoring, and more specifically, to a method and device for detecting fetal instantaneous heart rate based on Shannon envelope. Background technique [0002] Fetal heart rate monitoring is the most common method of fetal monitoring to predict the health of the fetus in utero. As early as the beginning of the 19th century, obstetricians used fetal heart auscultation to estimate the status of the fetus in the uterus. With the development of ultrasonic Doppler technology, electronic fetal monitoring (EFM) has become the most commonly used fetal monitoring. method. A healthy fetus undergoes subtle changes at different moments in the uterus, and changes in the fetal heart rate are a manifestation of the regulation of the circulatory system and the central nervous system. The internal reserve capacity and hypoxia tolerance can greatly reduce the distress caused by hypoxia and ischemia, resulting in f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B8/02
CPCA61B8/02A61B8/488
Inventor 谢胜利于宣福蔡坤冯爱王赛红尧永贤
Owner GUANGDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap