A portable multiple fetal ECG monitor and monitoring method thereof

Abstract

The invention relates to a portable fetal heart rate monitor and a monitoring method thereof, belonging to the field of medical equipment. The device includes a bioelectric sensor, signal amplification and filter, A / D converter, embedded microcontroller, memory, LCD display, rechargeable battery, clock frequency module, bluetooth and NFC module; the device detection method includes steps: Collect bioelectrical signals from the abdomen; use adaptive filtering algorithm to filter out myoelectric signals and noise interference; use wavelet algorithm to extract MECG signals; add Gaussian white noise to FECGErr signals to perform ensemble empirical mode decomposition; The IMF signal of X is subjected to singular value decomposition to obtain k singular values ​​of matrix X; and the k singular values ​​are sorted; the number of fetuses is predicted. The present invention only uses one maternal abdominal wall signal to realize the separation of maternal and fetal electrocardiographic signals, and can be used for the first time after 5 gestational weeks of pregnancy, and can estimate the number of fetuses.

Description

technical field [0001] The invention belongs to the field of medical equipment monitoring, and relates to a portable multifetal electrocardiogram monitor and a monitoring method thereof. Background technique [0002] Around the world, more than 3 million fetuses die during pregnancy each year, and more than 4 million babies die within the first four weeks after birth. In China alone, tens of millions of pregnant women and about 20 million newborns are born every year. In 2002, the infant mortality rate in Beijing alone was about 0.59%. In 2007, the perinatal mortality rate in Zhejiang Province was about 1.174%. In poverty-stricken areas, the average neonatal mortality rate is even higher, about 3.976%. It can be seen that in order to improve the quality and survival rate of newborns, early detection and early prevention are very important. The main content of prenatal examination is fetal health monitoring. Fetal health monitoring can detect abnormal conditions such as hea...

AI Technical Summary

Problems solved by technology

And the current fetal ECG signal extraction algorithm does not consider the situation of multiple births

Therefore, the current fetal heart rate monitors are only suitable for use in hospitals, and are not suitable for portable operating environments at home.

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