Fetus electrocardiosignal extracting method based on self-adaptation FLANN filter

Abstract

The invention discloses a fetus electrocardiosignal extracting method based on a self-adaptation FLANN filter, and belongs to the technical field of fetus electrocardiosignal detecting. The fetus electrocardiosignal extracting method solves the problem that due to the nonlinearity of a mother electrocardiosignal from the chest area to the abdomen area and the non-stability characteristic of the electrocardiosignal , the fetus electrocardiosignal is extracted inaccurately. A mother and fetus mixed electrocardiosignal is obtained through the lead of the abdomen of the mother, and the mother electrocardiosignal is obtained through the lead of the chest of the mother; two kinds of electrocardiosignals obtained from the body surface of the mother are respectively processed; the preprocessed mother and fetus mixed electrocardiosignal and the preprocessed mother electrocardiosignal are normalized to serve as an original input signal and a reference input signal of the self-adaptation FLANN filter; parameters of the self-adaptation FLANN filter are constantly updated through the self-adaptation LMS algorithm, and the non-linear relationship of the mother electrocardiosignal from the chest area of the mother and the abdomen area of the mother is estimated; an error output signal of the self-adaptation FLANN filter serves as an estimated fetus electrocardiosignal. The fetus electrocardiosignal extracting method is used for extracting the fetus electrocardiosignal.

Description

technical field [0001] The invention relates to a fetal electrocardiographic signal extraction method based on an adaptive FLANN filter, and belongs to the technical field of fetal electrocardiographic signal detection. Background technique [0002] Prenatal and postnatal care is an important measure to improve the quality of the country's population. With the continuous improvement of living standards, people's awareness of prenatal and postnatal care has been gradually strengthened. At the same time, the development of modern science and technology has also provided technical support for perinatal monitoring of pregnant women and fetuses. In the future, real-time monitoring of fetuses and pregnant women will receive more and more attention during the perinatal period. [0003] Fetal Electrocardiogram (FECG) is an objective indicator of fetal heart physiological activity, which reflects the growth and health status of the fetus during pregnancy, and can help early diagnosi...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the shortcoming and deficiency of existing method, provide a kind of fetal electrocardiogram signal extraction method based on self-adaptive FLANN filter, this method is used for clinical detection of fetal electrocardiogram signal, can solve the problem due to mother's electrocardiogram signal There are nonlinear and non-stationary characteristics of the ECG signal between the chest area and the abdominal area, resulting in inaccurate extraction of fetal ECG signals

Images