Chapter 47 Design of a Fetal Heartbeat Detector

摘要

Fetal Doppler is an electronic tool that serves as a standard instalment to assess the health of pregnant mother and her fetus. This tool particularly detects the fetal heartbeat in the womb using ultrasound waves. In this paper, we proposed a prototype of fetal heartbeat detector which can detect fetal heartbeat directly without using ultrasonic waves. This detector uses Chebyshev bandpass filter circuit for passing a frequency of 2-3 Hz.