Fetal health monitor based on multi-channel passive signal acquisition

Abstract

The invention discloses a fetal health monitor based on multi-channel passive signal acquisition, and the monitor comprises a reference signal acquisition device which is used for acquiring reference signals generated by heartbeat and respiration of a pregnant woman; a fetus signal acquisition device used for acquiring fetus signals; and a handheld control host used for calculating to obtain the heart rate of the fetus, extracting time-frequency characteristics of the reference signal S0, establishing a band-pass filter according to the time-frequency characteristics to remove interference signals generated by heartbeat and respiration of the pregnant woman, removing interference signals generated by physical activity of the pregnant woman in fetal signals by using a threshold filtering method, extracting fetal movement characteristic signals by using a cross-correlation analysis method, and calculating fetal movement times, achieving storage, filtering and feature extraction analysis of reference signals and fetal signals, and displaying the monitored fetal heart rate and fetal movement frequency. The device can be conveniently worn on the body of the pregnant woman, high-precision fetal heart rate monitoring and fetal movement counting are achieved, and the pregnant woman can know the health state 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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