Recent developments in mmWave radar technologies have enabled the truly non-contact heart-rate (HR) and breath-rate (BR) measurement approaches, which provides a great ease in patient monitoring. Additionally, these technologies also provide opportunities to simultaneously detect HR and BR of multiple patients, which has become increasingly important for efficient mass monitoring scenarios. In this work, a frequency modulated continuous wave (FMCW) mmWave radar based truly non-contact multiple patient HR and BR monitoring system has been presented. Furthermore, a novel approach is also proposed, which combines multiple processing methods using a least squares solution to improve measurement accuracy, generalization, and handle measurement error. The proposed system has been developed using Texas Instruments' FMCW radar and experimental results with multiple subjects are also presented, which show >97% and >93% accuracy in the measured BR and HR values, respectively.

翻译：毫米波雷达技术的最新进展使得真正非接触式心率（HR）与呼吸率（BR）测量方法成为可能，为患者监护带来了极大便利。此外，该技术还提供了同时监测多名患者HR与BR的能力，这对于高效的大规模监护场景日益重要。本研究提出了一种基于调频连续波（FMCW）毫米波雷达的真正非接触式多患者HR与BR监测系统。进一步地，本文还提出了一种创新方法，该方法通过最小二乘解融合多种处理技术，以提升测量精度、增强泛化能力并处理测量误差。该系统采用德州仪器的FMCW雷达开发完成，并展示了多受试者的实验结果，其测量的BR与HR准确率分别超过97%和93%。