Fetal heart rate detection method based on PC

Abstract

The invention relates to a fetal heart rate detection method based on a PC, which comprises the following steps: a fetal heart probe is connected to the PC; an excitation circuit generates a signal, and the signal is transmitted to the belly of a pregnant woman by the transmitting end of an ultrasonic transducer, and then input to an analog multiplier as a carrier; the receiving end of the ultrasonic transducer receives reflected waves, converts the reflected waves into an electric signal and inputs the electric signal to the analog multiplier; the analog multiplier demodulates the signal, the output differential electric signal is processed by an amplifying circuit and a filter circuit, and a singlechip carries out AD sampling; the PC sends out an acquisition start command, and the singlechip transmits the processed signal to the PC; and the fetal heart probe resets after stopping acquisition. The invention adopts an integrated fetal heart probe and solves the problem of on-line working between the fetal cardiotachometer and the PC. The invention can record, store, display and print the fetal heart rate in real time, and can also have the functions of automatic alarming and forgery prevention.

Description

technical field [0001] The invention relates to the field of fetal heart rate detection, in particular to a PC-based fetal heart rate detection method. Background technique [0002] With the development of social economy and the improvement of people's living standards, people pay more and more attention to the health care of women during pregnancy. Among the various indicators of pregnancy inspection, the detection of fetal heart rate is particularly important. Existing fetal heart rate detection method is to detect by ultrasonic Doppler fetal heart rate meter, which can achieve real-time monitoring of fetal heart rate, and has the advantages of portability, but still has the following disadvantages in actual use, because it cannot achieve the optimal Best use effect: [0003] 1. The results measured by existing independent fetal heart rate monitors can only be picked up by earphones or external speakers. Some of them can display fetal heart rate through LCD and other dis...

AI Technical Summary

Problems solved by technology

Existing fetal heart rate detection method is to detect by ultrasonic Doppler fetal heart rate meter, which can achieve real-time monitoring of fetal heart rate, and has the advantages of portability, but still has the following disadvantages in actual use, because it cannot achieve the optimal Best use effect:

[0003] 1. The results measured by existing independent fetal heart rate monitors can only be picked up by earphones or external speakers. Some of them can display fetal heart rate through LCD and other display interfaces, but because of the lack of communication interface, the heart rate data cannot be effectively and permanently saved and cannot be played back. The fetal heart rate waveform cannot record the relevant information of the tested object (the tested object's age, gestational age, name, etc.), and cannot print out the results as daily monitoring data and provide it to the doctor as a reference for diagnosis;

[0004] 2. The existing technology does not have a good human-machine interface, and the user cannot set the alarm limit by himself, so when the measured fetal heart rate exceeds the set normal range, the alarm cannot be activated in a timely and effective manner;

[0005] 3. Even if a data interface is simply added to the existing technology, due to the lack of PC software support, only the stored heart rate data can be uploaded or the fetal heart sound can be recorded by using a recording tool. It is still difficult to upload the measurement data in real time

[0006] This shows that the above-mentioned existing fetal heart rate detection method obviously still has inconvenience and defects in composition and use, and needs to be further improved urgently.

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