Fetal heart detection method based on fetal heart position guiding

Abstract

The invention discloses a fetal heart detection method based on fetal heart position guiding. The method comprises the steps of ultrasonic transducer design, fetus-voice meter ultrasonic probe design, fetal heart signal feature extraction algorithm design and fetal heart position guiding algorithm design. By means of the fetal heart detection method, the fetal heart position searching function can be achieved, fetal heart orientation information can be given, a pregnant woman without fetal heart measurement experience can be guided to find an accurate fetal heart measurement position, and therefore the accurate fetal heart rate is obtained. The problems of large fetal heart rate counting error, fuzzy fetal heart sound and the like caused by inaccurate fetal heart measurement position are solved, the fetal heart signal detection range is large, the fetal heart rate is accurately measured and calculated, the operation is simple, and the fetal heart detection requirement in a family scene can be met.

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 are 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 su...

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.

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