5.8 GHz microwave Doppler radar for heartbeat detection

Abstract

Non-contact and non-invasive heartbeat detection is one of various research objectives and current emerging technology in various fields, especially in health care service. The signal without noise, interference and irrelevant heartbeat respiration with proper distance and power level is more preferable in a system design to provide better health care monitoring system. The purpose of this paper is aimed to present a filtering technique using Matlab simulation tool to obtain a smooth and accurate heartbeat, and the correlation with distance of heartbeat detection based on Doppler Effect motion sensing principle. The measurement was taken at operating frequency 5.8GHz. The distance is varied from 1 feet to 4 feet. A comparative study is carried out based on experimental results. The measurements and Matlab simulation results provide a clear heartbeat detected signal and prove the relation in term of distance. The future work will focus on the different power level with fixed distance. The implication of this experimental work is to provide some information related to non-contact microwave heartbeat detection. The information shared is aimed to serve the similar scientific field and improve the system features.