Recent Developments in Contactless Monitoring Vital Signs Using Radar Devices

TL;DR

This paper reviews recent advancements in contactless vital sign monitoring using radar technology, highlighting algorithms for movement recovery, interference mitigation, and adaptive estimation validated across simulations, office, and clinical settings.

Contribution

It introduces new algorithms and frameworks for contactless vital sign monitoring with radar, validated in diverse real-world scenarios.

Findings

Effective chest wall movement recovery algorithm

Interference mitigation technique improves accuracy

Adaptive estimation framework robust across environments

Abstract

Continuous monitoring of vital signs is of paramount importance. These critical physiological parameters play a crucial role in the early detection of conditions that affect the well-being of a patient. However, conventional contact-based devices are inappropriate for long-term monitoring. Besides mobility restrictions, they can cause epidermal damage, and even lead to pressure necrosis. In this paper we present a selection of recent works towards enabling the contactless monitoring of vital signs using radar devices. The selected contributions are threefold: an algorithm for recovering the chest wall movements from radar signals; a random body movement and interference mitigation technique; and a robust and accurate adaptive estimation framework. These contributions were tested in different scenarios, spanning ideal simulation settings, real data collected while imitating common working conditions in an office environment, and a complete validation with premature babies in a critical care environment.