System and method for measuring heart rate of fetus

Abstract

The invention relates to a system and method for measuring a heart rate of a fetus. The system for measuring the heart rate of the fetus comprises a maternal electrocardiosignal acquisition unit, a belly mixed signal acquisition unit, an electrocardiosignal processing unit and a fetus heart rate calculating unit, wherein the maternal electrocardiosignal acquisition unit is used for acquiring a maternal electrocardiosignal from a mother body, the belly mixed signal acquisition unit is used for acquiring a belly mixed signal which comprises the maternal electrocardiosignal and a fetus electrocardiosignal from the belly of the mother body, the electrocardiosignal processing unit is configured to receive the maternal electrocardiosignal from maternal electrocardiosignal acquisition unit and the belly mixed signal from the belly mixed signal acquisition unit, the electrocardiosignal processing unit identifies the position of an R wave of the maternal electrocardiosignal and determines a QRS wave band signal of the maternal electrocardiosignal based on the position of the R wave of the maternal electrocardiosignal, the electrocardiosignal processing unit removes the QRS wave band signal of the maternal electrocardiosignal from the belly mixed signal to obtain the fetus electrocardiosignal, and the fetus heart rate calculating unit is configured to identify the position of an R wave of the fetus electrocardiosignal, and calculates the heart rate of the fetus according to the time interval between two adjacent R waves of the fetus electrocardiosignal.

Description

technical field [0001] The present invention relates to the field of heart rate measurement, in particular to a system and method for measuring fetal heart rate. Background technique [0002] Fetal heart rate (FHR) is an important indicator for monitoring the growth and development of the fetus. The fetal heart rate can be obtained to determine whether there is an abnormality in the growth and development of the fetus, so that remedial measures can be taken early to ensure the health and safety of the fetus and pregnant women. At present, the fetal heart rate is mainly detected by the method of Doppler ultrasound. For example, various Doppler fetal heart rate instruments are widely used to monitor the fetal heart rate. The ultrasound diagnosis of the fetal heart rate is based on the Doppler effect, so that the fetal heart rate can be obtained. heart rate. [0003] In the prior art, various devices and methods for measuring fetal heart rate using Doppler ultrasound method ha...

AI Technical Summary

Problems solved by technology

This method can not only calculate the fetal heart rate, but its main purpose is to obtain a clear and accurate complete FECG signal, and monitor the fetal heart activity by enhancing and analyzing the complete FECG signal, so its algorithm is relatively complicated

And because the average MECG signal is still somewhat different from the MECG signal of each segment, if all the MECG signals are removed from the maternal abdominal mixed signal, additional errors may be caused, which is not conducive to the calculation of fetal heart rate, resulting in fetal Decreased accuracy of heart rate calculation

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