一种基于连续波生物雷达的人体步态非接触检测系统  

A New Approach for Human Gait Non-contact Detecting System Based on Continuous-wave Bio-radar

作　　者：王帅杰[1] 李钊[1] 张华[1] 王梦梦[1] 张自启[1] 王健琪[1] 路国华[1] WANG Shuai-jie;LI Zhao;ZHANG Hua;WANG Meng-meng;ZHANG Zi-qi;WANG Jian-qi;LU Guo-hua(Department of Medical Electronics,School of Biomedical Engineering, the Fourth Military Medical University, Xi’an Shaanxi 710032, China)

机构地区：[1]第四军医大学生物医学工程学院医学电子学教研室,西安陕西710032

出　　处：《中国医疗设备》2016年第12期26-30,共5页China Medical Devices

基　　金：国家科技支撑计划课题(2014BAK12B01);国家自然科学基金面上项目(61271102);陕西省自然科学基金面上项目(2014JM2-6087)

摘　　要：人体步态是一个全身肌肉骨骼协调运行的复杂机制,具有特异性,可以作为身份判别或临床疾病诊断的依据。本文介绍了一种基于连续波生物雷达的人体步态非接触检测系统,通过对人体走动时产生的雷达回波信号进行频谱分析,提取出人体步态信号的主要频率,并与加速度传感器获得的数据进行相干分析。实验结果表明生物雷达可以非接触地检测到人体的步态信号,并与加速度检测和视频监测结果具有较好的一致性。Human gait is a complex mechanism by which a variety of muscles and bones must worktogether in precise coordination to create characteristic human locomotion, which can be used as anidentification or clinical gait characterization for detecting pathological conditions. This article introduceda non-contact detecting system for human gait based on continuous-wave bio-radar. Through spectrumanalysis of the radar echo signal generated during human walking, main frequency of the human gaitsignal was extracted. Correlation analyses were made with the data obtained from the acceleration sensor.Experimental results show that the bio-radar can detect the gait signal of human walking without contact,and has good consistency with the results of acceleration and video monitoring.

关 键 词：人体步态分析 生物雷达 非接触检测系统 频谱分析 相干分析 疾病诊断 

分 类 号：R318[医药卫生—生物医学工程] TN957.51[医药卫生—基础医学]