摘要
目的:利用生物雷达实现对心率的检测。方法 :通过提取雷达I-Q输出端的数据,采用基于LM(levenbergmarquardt)算法的参数估计来获取心率。结果:对静止呼吸以及伴有体动正常呼吸这2种情况下采集到的数据进行了分析,得到了理想的实验结果。I-Q双通道雷达系统无需相位展开操作,对于信噪比非常小的生物信号较为有利。结论:生物雷达可以在非接触的状态下实现对心率的检测,对于临床诊断具有重要的应用价值。
Objective To realize heart rate detection by bioradar. Methods A parameter optimization method was used to detect heart rate based on the nonlinear Levenberg-Marquardt（LM） algorithm with a remote millimeter wave （mmW） I-Q sensor, Results The data acquired at static respiration and respiration with body movement were analyzed to obtain the results. I-Q two-channel radar system could be used to detect the biosignals with little SNR, without the need of phase. Conclusion Bioradar realizes con- tact-free heart rate detection, and thus is worth applying for clinical diagnosis.
出处
《医疗卫生装备》
CAS
2014年第3期10-13,共4页
Chinese Medical Equipment Journal
基金
陕西省攻关项目(2011K12-05-09)
军队"十二五"重点项目(BWS11Z011)
关键词
心率
LM
生物雷达
非接触
心动
heart rate
LM
bioradar
contact-free
heartbeat
