A method for extracting fetal electrocardiogram signal

A technology of ECG signal and extraction method, which is applied in the field of biomedical signal processing, can solve the problems such as the difficulty of appropriate reference signal of fetal ECG signal and the effect of affecting the extraction effect, and achieve the effect of small dependence, small amount of calculation and clear signal
CN104161508BActive Publication Date: 2017-05-24HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN ENG UNIV
Publication Date
2017-05-24

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Abstract

The invention belongs to the technical field of biomedical signal processing, and in particular relates to a fetal electrocardiographic signal extraction method for extracting fetal electrocardiographic signals from mutually aliased maternal-fetal mixed electrocardiographic signals. The invention includes: firstly placing the electrodes of the test equipment on the abdominal wall of the mother, recording the potential difference data caused by the conduction of the electrocardiogram, recording multiple sets of data, and obtaining multiple maternal-fetal mixed electrocardiographic signals; and then constructing the reference signal of the maternal electrocardiographic signal , and then use the reference signal to extract the maternal ECG signal from the maternal-fetal mixed ECG signal; then remove the components related to the extracted maternal ECG signal from the maternal-fetal mixed ECG signal, so as to achieve the extraction of fetal ECG purpose of the signal. The fetal electrocardiographic signal extraction method of the present invention can effectively extract the fetal electrocardiographic signal from the mixed electrocardiographic signal of the mother and the fetus. The method has the advantages of small amount of calculation, low complexity, little dependence on parameters, and clear extracted signal, which achieves the expected purpose.
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Description

technical field

[0001] The invention belongs to the technical field of biomedical signal processing, and in particular relates to a fetal electrocardiographic signal extraction method for extracting fetal electrocardiographic signals from mutually aliased maternal-fetal mixed electrocardiographic signals. Background technique

[0002] Fetal ECG signal is an important objective indicator for the study of fetal heart physiological activity, which reflects the growth and health status of the fetus in the mother's body. Therefore, separating or extracting clear fetal ECG signals has become a very meaningful work.

[0003] Some current methods focus on the extraction of fetal ECG signals by using blind source separation. The existing methods mainly use the prior information of the fetal ECG signal to construct the corresponding reference signal, and then use the blind source separation algorithm based on gradient or negentropy to separate and extract the fetal ECG signal. This t...

Claims

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