电子学报2025，Vol.53Issue(1)：1-13,13.DOI:10.12263/DZXB.20240674
可重构智能超表面辅助的非视距人体生命体征感知
Non-Line-of-Sight Human Vital-Sign Sensing Aided by Reconfigurable Intelligent Surfaces
摘要
Abstract
This paper proposes a contactless human vital-sign sensing method in non-line-of-sight(NLoS)scenarios,which integrates reconfigurable intelligent surfaces(RISs)into wireless human sensing,and achieves NLoS human vital-sign sensing by utilizing the flexible manipulation capability of RISs over electromagnetic waves.Firstly,through a visual-aided mechanism,this paper locates human targets using the deep learning model Yolo-v7.Then,the metasurface optimizes the coding matrix based on the estimated human location,thereby altering the propagation path of sensing signals to achieve human sensing in non-line-of-sight scenarios.Additionally,addressing the shortcomings of traditional variational mode de-composition(VMD)algorithms in human vital-sign sensing,we further propose an improved VMD algorithm to achieve precise estimation of breathing rate and heartbeat rate.Experimental results demonstrate that the visual-aided module can ac-curately locate the position of human chest,thus enabling precise beamforming controlled by the intelligent metasurface.The proposed filtering-based VMD algorithm can achieve precise estimation of human vital signs,with average estimation errors of 0.6 RPM for respiration and 5.3 BPM for heartbeat,respectively.Furthermore,further analysis also demonstrates the effectiveness and accuracy of the RIS-based sensing scheme for human vital-sign sensing in NLoS scenarios.关键词
可重构智能超表面/非视距感知/人体无线感知/生命体征探测/变态模式分解/视觉辅助Key words
reconfigurable intelligent surface(RIS)/non-line-of-sight perception/wireless signal-based human sens-ing/vital-sign detection/variational model decomposition/visual assistance分类
电子信息工程引用本文复制引用
李新羽,张静远,蔡子轩,秦世龙,马骞,游检卫,崔铁军..可重构智能超表面辅助的非视距人体生命体征感知[J].电子学报,2025,53(1):1-13,13.基金项目
国家重点研发计划(No.2023YFB3813100) （No.2023YFB3813100）
国家自然科学基金(No.62101124,No.62301149,No.62288101) （No.62101124,No.62301149,No.62288101）
江苏省自然科学基金(No.BK20210209,No.BK20230820) （No.BK20210209,No.BK20230820）
111项目(No.111-2-05) （No.111-2-05）
东南大学科研启动基金(No.RF1028623244) National Key Research and Development Program of China(No.2023YFB3813100) （No.RF1028623244）
National Natural Science Foundation of China(No.62101124,No.62301149,No.62288101) （No.62101124,No.62301149,No.62288101）
Natural Science Foundation of Jiangsu Province(No.BK20210209,No.BK20230820) （No.BK20210209,No.BK20230820）
111 Project(No.111-2-05) （No.111-2-05）
Start-up Research Fund of Southeast University(No.RF1028623244) （No.RF1028623244）
