An array type fetal heart rate monitoring abdominal belt based on piezoelectric film sensor

Abstract

The invention provides an array fetal heart monitoring abdominal bandage based on a piezoelectric film sensor and relates to the field of monitoring on the heart of a fetus. The invention is used for solving the problems of serious error, 'invasion type' monitoring manner and low accuracy caused in the fact that a fetal heart sound stethoscope, an ultrasonic Doppler fetal heart sound instrument and a single sensor are used for fetal heart monitoring in the prior art. Magic pastes are respectively arranged at the two end parts of the abdominal bandage, and a piezoelectric film sensor array is arranged at the middle part of the abdominal bandage; a detection circuit is arranged on the abdominal bandage; and the detection circuit is composed of a preposed differential amplifying circuit, a filter circuit, an analog / digital conversion circuit, a DSP (digital signal processing) module, a storage module and an interface module. The adopted piezoelectric film sensor has the advantages of high response speed, high flexibility and good linearity, and high detection accuracy can be guaranteed; and the piezoelectric film sensor is light, soft and durable, so that the piezoelectric film sensor can be in fit with a human body well after being embedded into the abdominal bandage and a man-machine effect is good.

Description

technical field [0001] The invention relates to the field of monitoring the fetal heart. Background technique [0002] In the past, fetal heart rate monitoring was only used to speculate whether the fetus was alive or not. Now, fetal heart rate monitoring can be used to diagnose fetal energy reserve capacity and fetal health status. Fetal heart rate monitoring can not only diagnose the function of the fetal heart, but also the function of the central nervous system of the fetus, so as to avoid irreparable damage to the central nervous system of the fetus caused by the deterioration of the uterine environment of pregnant women. Fetal heart rate is an important indicator of fetal heart rate monitoring. [0003] Early fetal heart rate monitoring mostly uses fetal heart sound stethoscope to measure fetal heart rate, which has the disadvantages of large error, poor anti-interference ability, and manual operation by doctors or pregnant women. At present, ultrasonic Doppler fetal...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of array type fetal heart rate monitoring abdominal belt based on piezoelectric film sensor, in order to solve the existing fetal heart rate monitoring mostly utilize fetal heart sound stethoscope, ultrasonic Doppler fetal sound instrument, single sensor to carry out fetal heart rate monitoring. monitoring, they have the problem of large error or "invasive" monitoring or low accuracy

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