Allocation of Fetal Heart Tones During Non-stop Monitoring of Pregnant Women

摘要

The article is to study the system of non-stop daily monitoring of the state of the maternal and the fetal circulatory systems using acoustic sensors. After preliminary preparation of the phonocardiogram heart tones of the fetus and the pregnant woman were extracted using Shannon energy. The obtained data was separated, followed by calculation of the heart beats. As a result, software algorithms for calculating heart beats at a particular time (30 seconds to 6 hours) have been developed and implemented. The measurement error ranges from 1 to 6 beats per minute. The accuracy of the software and algorithmic support was estimated by comparing the results obtained during parallel cardiotocography, taken as the reference method.