用毫米波雷达非接触同时监测多人生命体征，硬件加速提升性能。
Scalable Multisubject Vital Sign Monitoring With mmWave FMCW Radar and FPGA Prototyping
- 基于调频连续波雷达与FPGA实现多人体征非接触监测。
- 相比软件方案提速7400倍，计算资源占用降低18.4%。
- 适合医疗监护、智能养老等需无感持续监测的场景。
本文提出一种基于频率调制连续波（FMCW）雷达的创新方法，实现对多个人体的非接触式生命体征同步监测。传统监测方式存在穿戴不适、校准困难及接触设备传播感染等问题。本研究旨在解决多目标监测的硬件与理论挑战，展示系统在多种关键场景中的应用潜力。通过实验证明，基于FPGA的原型系统相较软件实现，具备2.7倍的执行速度提升和18.4%的查找表（LUT）资源节省，并实现超过7400倍的加速比，验证了其在便携式硬件解决方案上的可行性。
原文摘要 · Abstract (English)
In this work, we introduce an innovative approach to estimate the vital signs of multiple human subjects simultaneously in a non-contact way using a Frequency Modulated Continuous Wave (FMCW) radar-based system. Traditional vital sign monitoring methods often face significant limitations, including subject discomfort with wearable devices, challenges in calibration, and the risk of infection transmission through contact measurement devices. To address these issues, this research is motivated by the need for versatile, non-contact vital monitoring solutions applicable in various critical scenarios. This work also explores the challenges of extending this capability to an arbitrary number of subjects, including hardware and theoretical limitations. Supported by rigorous experimental results and discussions, the paper illustrates the system's potential to redefine vital sign monitoring. An FPGA-based implementation is also presented as proof of concept for a hardware-based and portable solution, improving upon previous works by offering 2.7x faster execution and 18.4% less Look-Up Table (LUT) utilization, as well as providing over 7400x acceleration compared to its software counterpart.
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