A Fetal Heart Detection Method Based on Fetal Heart Position Guidance

Abstract

The invention discloses a fetal heart detection method based on fetal heart position guidance, comprising: design of an ultrasonic transducer, design of an ultrasonic probe for a fetal heart rate instrument, design of a fetal heart signal feature extraction algorithm, and design of a fetal heart position guidance algorithm. The fetal heart rate detection method of the present invention can realize the function of searching for the fetal heart position and give the fetal heart position information, and can guide pregnant women who have no experience in fetal heart rate measurement to find an accurate fetal heart rate measurement position, thereby obtaining accurate fetal heart rate and solving the problem Inaccurate fetal heart rate measurement position leads to large errors in fetal heart rate counting and fuzzy fetal heart sounds. Its fetal heart rate signal has a large detection range, accurate measurement and calculation of fetal heart rate, and simple operation, which can meet the fetal heart rate in family scenarios. Testing needs.

Description

technical field [0001] The invention belongs to the technical field of fetal heart detection, and in particular relates to a fetal heart detection method based on fetal heart position guidance. Background technique [0002] With the improvement of people's living standards and the concept of prenatal and postnatal care becoming more and more popular, people's demand for health monitoring is increasing, and the health problems of pregnant women and fetuses have become the focus of society. Fetal heart rate monitoring is an important means of fetal health monitoring, which can effectively protect the health of fetuses and pregnant women. Traditional fetal heart rate monitoring methods cannot achieve independent and continuous daily monitoring. At present, most household fetal heart rate detectors use single-transducer, single-frequency ultrasonic Doppler detection technology. Although this type of fetal heart rate monitor is easy to use and low in price, it has problems such a...

AI Technical Summary

Problems solved by technology

The EU patent with the publication number WO9747242A1 proposes a fetal heart detection method for adjusting the ultrasonic energy level. By increasing the sensitivity of the probe, the detection range of the probe is improved; although this method expands the detection range of the fetal heart to a certain extent, the improvement of the ultrasonic energy May affect the fetus, there is a certain safety hazard

The literature [Smith L, Seyed-Bolorforosh M, Thomenius K, et al. Fetal heart rate monitor with wide search area: U.S. Patent Application 12 / 649,735 [P]. 2011-6-30] proposed multiple transducers and acoustic lenses Combined fetal heart rate detection method to increase the effective detection range of the ultrasonic probe, using acoustic lens to expand the detection range of a single transducer, multiple transducers are used to detect the fetal heart rate in groups, and select the best signal-to-noise ratio A good combination method is used to detect fetal heart rate signals; although this method expands the effective detection range to a certain extent, the ultrasonic probe is too large due to the large number of transducers, which does not meet the needs of small and portable home fetal heart rate instruments

Based on the same concept, the Chinese patent with the publication number CN102499673A proposes a method for detecting fetal heart rate with a multi-chip ultrasonic transducer, which collects the fetal heart signal by grouping, and selects the chip group with the best signal quality for signal collection. Although this method expands the effective detection range, the system is complicated and the manufacturing cost is high. It is mainly aimed at large-scale medical fetal monitors, and it is difficult to realize home use and miniaturization.

[0005] In the above-mentioned existing fetal heart rate detection methods, there are problems such as relatively complicated system, large equipment volume, high cost, etc., which do not meet the needs of home fetal heart rate monitors.

Images