Respiration and Heart Movement Monitoring Using AM Continuous-Wave Radar

Abstract

AbstractA wireless and contactless device senses chest move-ments and measures the respiration and heart rates. A signal is sent toward the body, which will cause a reflected signal. This signal is recorded via the receiver antenna and the information is extracted from its amplitude and phase.Safwan H. Ibrahim, Abdullah A. Zayat, Ali H. Muqaibel, Tarig Ballal and Tareq Y. Al-NaffouriRespiration and Heart Movement MonitoringUsing AM Continuous-Wave RadarMotivationWireless & Contactless Monitoring:Multiple people at the same timeLow-costLess noisyFlexibilityMethodSet-upSample ResultsConclusionReferences The proposed system was able to measure respiration and heart rates with high accuracy compared to con-tact devices. The system seems to have a harmonics problem coming from chest movement and multipath reflections. In future, the work will be focused on canceling the harmonics and monitoring multi-targetsFig.2: A comparison between the system results and the ground-truth (Oximeter)———Maximum AccuracyMinimum AccuracyHeart Rate98.6%95.3%Breathing Rate100%97.2Table.1: Maximum and Minimum Accuracy of the system compared to the OximeterFig.3: User Interface of the system (LabVIEW)Fig.1: The system diagram and the mathematical equations