Portable ultrasonic Doppler fetal heart rate monitor and controlling method thereof

Abstract

The invention provides a portable ultrasonic Doppler fetal heart rate monitor which is safe, is accurate in detection and has multiple functions and a controlling method thereof, belonging to the technical field of medical devices. The fetal heart rate monitor comprises an ultrasonic transmitting and receiving unit, a fetal heart rate signal extraction unit and a fetal heart rate signal processing unit, wherein an output end of the ultrasonic transmitting and receiving unit is connected with an input end of the fetal heart rate signal extraction unit; and an output end of the fetal heart ratesignal extraction unit is connected with an input end of the fetal heart rate signal processing unit. The controlling method of the fetal heart rate monitor comprises the following steps: 1, performing digital filter on a fetal heart rate signal extracted by the fetal heart rate extraction unit by adopting a wavelet packet mixed nose threshold denoising method based on the maximum entropy principle; and 2, adopting a generalized kernel correlated algorithm to performing heart rate detection on the fetal heart rate signal processed in the step 1.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a portable ultrasonic Doppler fetal heart rate monitor and a control method thereof. Background technique [0002] With the rapid development of science and technology and the continuous improvement of people's living standards, people clearly realize that the quality of life is closely related to physical health, and people's awareness of prenatal and postnatal care is also gradually strengthened. Improving birth quality and reducing perinatal morbidity and mortality is an important part of maternal and child health care. [0003] According to the World Health Report 2005 - Emphasizing the Health of Every Mother and Child issued by the Director-General of the World Health Organization in Geneva in 2005, it was pointed out that 3.3 million babies were stillborn, and more than 4 million babies died before the age of 28 days. death; at the same time, about 500,000 women di...

AI Technical Summary

Problems solved by technology

[0009] At present, the portable fetal heart rate monitors sold on the market have the following defects in varying degrees: 1. Limited functions, inaccurate detection, inconvenient portability, and inflexible use; 2. The power consumption of the system is large, and ordinary batteries are difficult to maintain for a long time. Time monitoring, while high power consumption will also increase the operating temperature of the system, affecting the working effect and service life of each part of the circuit; 3. The system has poor anti-interference ability

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