基于线性调频连续波雷达的呼吸信号检测技术研究  

Research on Respiratory Signal Detection Technology Based on LFMCW

作　　者：刘楚妍 杨天虹[1] 王昕宇 刘宇[1] LIU Chu-yan;YANG Tian-hong;WANG Xin-yu;LIU Yu(Shenyang Aerospace University,Shenyang Liaoning 110136)

机构地区：[1]沈阳航空航天大学,辽宁沈阳110136

出　　处：《数字技术与应用》2021年第6期22-23,共2页Digital Technology & Application

基　　金：大学生创新创业项目(X202010143082)。

摘　　要：本文主要研究线性调频连续波(LFMCW)雷达对呼吸信号的非接触式跟踪技术。首先由雷达发射线性调频连续波,采集含有人体生命体征信息的回波信号,然后进行滤波得到差拍信号,提取差拍信号的相位信息并进行展开,最后使用快速傅里叶变换来计算呼吸频率。This paper mainly studies the non-contact tracking technology of respiratory signal by linear frequency modulated continuous wave(LFMCW)radar.Firstly,the linear frequency modulated continuous wave is transmitted by the radar to collect the echo signal containing the vital signs of the human body,and then the beat signal is obtained by filtering,and the phase information of the beat signal is extracted and expanded.Finally,the fast Fourier transform is used to calculate the respiratory rate.

关 键 词：线性调频连续波雷达 呼吸频率监测 非接触式监测 距离跟踪 

分 类 号：TU17[建筑科学—建筑理论]