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A Method for Extracting Acceleration Characteristic Parameters of Fetal Heart Monitoring

A technology of characteristic parameters and acceleration parameters, applied in the field of biomedical signal processing, can solve problems such as insufficient information extraction, and achieve the effects of reducing errors, simple and convenient steps, and improving interpretation efficiency.

Active Publication Date: 2017-10-13
BEIJING UNIV OF TECH +1
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Problems solved by technology

[0003] At present, the analysis of fetal heart rate acceleration is mainly to classify and count the acceleration by visual method, and the information contained in the acceleration of fetal heart rate signal is not sufficiently extracted.

Method used

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  • A Method for Extracting Acceleration Characteristic Parameters of Fetal Heart Monitoring
  • A Method for Extracting Acceleration Characteristic Parameters of Fetal Heart Monitoring
  • A Method for Extracting Acceleration Characteristic Parameters of Fetal Heart Monitoring

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Embodiment Construction

[0028] A more typical specific implementation manner of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] A typical application scenario of the present invention is to use the fetal heart rate monitoring heart rate signal to obtain characteristic parameters related to acceleration. Therefore, more objective and comprehensive information about the fetal heart rate signal can be obtained by using the existing mature technology of fetal heart rate signal collection and rich acceleration characteristic parameters.

[0030] Such as figure 2 As shown in , after the extraction process starts, the corresponding setting threshold is firstly selected according to the gestational age of the subject. Taking a subject who is 31 years old and has a gestational age of 39 weeks as an example, the gestational age is set in step T1. According to the setting in step T2, the system automatically selects the set threshold value for the...

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Abstract

An acceleration parameter acquisition method based on fetal heart rate signals in fetal heart rate monitoring, comprising a signal input detection module, an acceleration signal identification and extraction module, a unit acceleration rate calculation module, and an acceleration parameter output module. Among them: the signal input detection module includes signal preprocessing and effective signal extraction, the acceleration signal identification and extraction module includes baseline calculation, acceleration signal identification, acceleration signal extraction and acceleration signal preprocessing, and the unit acceleration calculation module includes calculation units Acceleration rate and number of acceleration grids per unit time. The method can use the fetal heart rate signal to obtain the characteristic parameters related to acceleration, reduce the errors mainly caused by the visual inspection method at present, and effectively improve the interpretation efficiency of the fetal heart rate monitoring map.

Description

technical field [0001] The invention relates to the field of biomedical signal processing, in particular to a method for extracting characteristic parameters of fetal heart rate acceleration in fetal heart rate monitoring. Background technique [0002] As an intrauterine monitoring technology that obtains fetal heart rate signals and maternal uterine contraction signals in real time, electronic fetal heart rate monitoring is currently widely used in obstetrics. Since the fetus is located in the womb of the mother's abdomen, the fetal heart sound signal is easily interfered by noise from the mother, sensors, and the external environment. At present, most fetal heart rate monitoring systems use the principle of ultrasonic Doppler and use autocorrelation algorithm to calculate the instantaneous heart rate of the fetus. As an important part of fetal electronic monitoring graphics, fetal heart rate acceleration is a phenomenon in which fetal heart rate rises rapidly, and it is s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0444A61B5/0245A61B5/344
Inventor 张松李广飞杨琳王妍李淑芳杨益民李旭雯
Owner BEIJING UNIV OF TECH
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