Fetal electrocardiogram circuit system

Abstract

The invention provides a fetal electrocardiogram circuit system. A double analog front-end chip AD8232 by ADI (Analog Devices, Inc.) is used to acquire a chest electrocardiogram signal and an abdominal electrocardiogram signals of a pregnant woman, and the acquired signals are filtered via low-path, high-pass and power-frequency trap circuits so as to filter disturbances of off-frequency signals among the electrocardiogram signals; the two signals are subjected to analog-digital conversion to form digital signals via an ultralow-power-consumption processor MSP430f5342, and baseline drift is removed from the two signals via median filter algorithm; the two signals are communicated via an SPI (serial peripheral interface) and stored by AT45DB081D, or are transmitted to a Bluetooth module via an UART (Universal Asynchronous Receiver / Transmitter) interface and then wirelessly transmitted to a cellphone APP or a computer, fetal electrocardiogram signals are extracted via adaptive filter algorithm or template matching method, waveform and heart rate are displayed, and a warning is provided for abnormal fetal electrocardiogram. The fetal electrocardiogram circuit system has the functions of flash notifications by a charge red indicator light and a lead drop green indicator light, low power consumption configuration of the module AD8232, and low power consumption configuration of the Bluetooth module; the fetal electrocardiogram circuit system has the advantages of portability, small size, good convenience of measurement and the like.

Description

technical field [0001] The invention belongs to the field of family health monitoring and relates to a fetal electrocardiogram detection circuit system. Background technique [0002] Fetal hypoxia is one of the main reasons that threaten the life of the fetus. Statistics show that at least 30% of cerebral palsy and severe mental retardation are caused by fetal hypoxia in the uterus, which leads to dysplasia or premature birth. Most of the mentally handicapped children in our country are caused by dysplasia or premature birth due to the distress state of hypoxia during the fetal growth process. Therefore, it is very necessary to monitor the pregnant women and fetuses during the perinatal period, so that not only the development status of the fetus can be understood, but also the problem of intrauterine hypoxia can be detected in time, so as to take effective measures to ensure the safety of pregnant women and fetuses. Fetal electrocardiographic monitoring plays an important ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fetal ECG detection circuit system to solve the problem of insufficient family monitoring

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