Multi-Resident Non-Contact Vital Sign Monitoring Using Radar: A Review

Vital signs are inarguably accepted as important key constituents to improve the health condition. Worldwide medical institutions and clinical observations have emphasized the need for continuous monitoring of vital signs such as heart rate (HR) and respiration rate (RR) for better health management. Radars are investigated as one of the potential technologies for non-contact continuous monitoring of vital signs. This paper provides a comprehensive technological review on the current state-of-art of non-contact vital sign (NCVS) measurements using radar. We highlight the need to move towards higher frequency for high accuracy in a multi-resident environment and analyze the implications of mmWave exposure on human health and the effect of environmental attenuation. Significant challenges associated with hardware and signal processing algorithm are discussed in detail. Finally, we conclude the review with future directions and challenges associated with the detection of vital signs in a multi-resident indoor environment.

Automated summary

This paper comprehensively reviews the current state-of-art of non-contact vital sign measurements using radar, highlighting the need to move towards higher frequency for high accuracy in a multi-resident environment. It also analyzes the implications of mmWave exposure on human health and environmental attenuation, while discussing significant challenges associated with hardware and signal processing algorithm. Finally, the review concludes with future directions and challenges associated with detecting vital signs in a multi-resident indoor environment.