A fetal health monitor based on multi-channel passive signal acquisition

Abstract

The invention discloses a fetal health monitor based on multi-channel passive signal collection, a reference signal collection device for collecting reference signals generated by pregnant women's heartbeat and breathing; a fetal signal collection device for collecting fetal signals; a hand-held control host computer for calculating Obtain the fetal heart rate; extract the reference signal S 0 According to the time-frequency characteristics, a band-pass filter is established to remove the interference signals generated by the pregnant woman's heartbeat and respiration, the threshold filtering method is used to remove the interference signals caused by the pregnant woman's physical activities in the fetal signal, and the fetal movement characteristics are extracted by cross-correlation analysis signal and calculate the number of fetal movements; realize the storage, filtering, feature extraction and analysis of reference signals and fetal signals, and display the monitored fetal heart rate and fetal movement times. The present invention can be worn on the body of a pregnant woman in a portable manner to realize high-precision fetal heart rate monitoring and fetal movement counting, and the pregnant woman can know the health status of the fetus at any time.

Description

technical field [0001] The invention belongs to the technical field of medical monitoring, and in particular relates to a fetal health monitor based on multi-channel passive acquisition signals. Background technique [0002] With the development of modern society, more and more attention has been paid to population and fertility issues. It has always been everyone's relentless pursuit to reduce the risk of childbirth and improve the healthy birth rate of fetuses. With the rapid development of electronic information technology and the leapfrog progress of sensor technology, more and more researchers are trying to use MEMS and other new sensors to carry out monitoring research on fetal health during pregnancy. Fetal heart rate and fetal movement are important vital signs of the fetus, and they are also important object of monitoring. [0003] The fetal heart rate reflects the activity of the fetal heart, which is regulated by the heart's own rhythm, central nervous system and...

AI Technical Summary

Problems solved by technology

Moreover, the signal collected by a single sensor is prone to interference, and the monitoring error is large, which cannot accurately reflect the health status of the fetus.

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