An Analysis Of Heartbeat Monitoring Using Microwave Doppler Technique

Nadia, Baharuddin (2013) An Analysis Of Heartbeat Monitoring Using Microwave Doppler Technique. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This Final Year Project (FYP) refers to technical work and report writing experience that is relevant to professional development prior to graduation. One of the Universiti Teknikal Malaysia Melaka requirements for the award of Bachelor of Electronic Engineering (Wireless Communication) is that a student should complete his/her Final Year Project (FYP) and report. In order to that, my Final Year Project (FYP) titled “An Analysis of Heartbeat Monitoring Using Microwave Doppler Technique”. This thesis discussed the possibility of detecting heartbeats using Doppler radar technique. The previous technology in detecting heartbeat like ECG is obstructive and not effective in certain situation where the subject doesn't cooperate. To overcome this problem, the Doppler radar technique is used. This technique works by transmitting continuous wave to targeted subject chest using one antenna and measure the reflecting signal using a vector network analyzer (VNA). The received reflected signal and transmitted signal is measured in term of the differentiation of the signal phase, the phase variation of the signal containing information about respiration activity and heartbeat signal. To separate these two signal, wavelet method and simple filter for filtering unnecessary signal have been used. The experiment is conducted using 2.4GHz frequency and several transmitted power. The results show that using wavelet methods from MATLAB software prove that the heartbeat signal can be detected using a single antenna. The results also show that the reduction of transmitting power significantly reduces the ability to detect a heartbeat signal. The significance of this research gives information about the minimal power needed to accurately detect the heartbeat signal.

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