Array fetal heart monitoring abdominal bandage based on piezoelectric film sensor
A technology of sensor arrays and piezoelectric films, applied in sensors, diagnostic recording/measurement, medical science, etc., can solve problems such as large errors, low monitoring or precision, and achieve small quality, good ergonomics, and good linearity Effect
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[0015] Specific implementation mode one: as figure 1 , figure 2 As shown, it is composed of abdominal belt 1, piezoelectric film sensor array 2, and detection circuit 3;
[0016] The two ends of the abdominal belt 1 are respectively provided with Velcro 1-1, the piezoelectric film sensor array 2 is arranged in the middle of the abdominal belt 1; the detection circuit 3 is arranged on the abdominal belt 1; the detection circuit 3 is amplified by the front differential Composed of circuit 3-1, filter circuit 3-2, analog / digital conversion circuit 3-3, DSP module 3-4, memory module 3-5, and interface module 3-6; the signal output bus connection of piezoelectric film sensor array 2 The signal input bus of the pre-differential amplifier circuit 3-1, the signal output bus of the pre-differential amplifier circuit 3-1 is connected to the signal input bus of the filter circuit 3-2, and the signal output bus of the filter circuit 3-2 is connected to the analog / digital conversion The...
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