基于多普勒效应雷达的非接触实时体征信息检测系统

Non-contact real-time physical information detection system based on Doppler effect radar

体温、心率、呼吸和血压等,是人体生命活动的基本表现,其中呼吸率和心率更是人体重要的生理参数,能够实时监测呼吸率与心率有着重要意义。利用超宽带雷达实现对体动监测与体征信息的实时分析。通过采集雷达输出的数据,提取幅值信号,通过频域转换,对频谱图进行体动分析,并对原始数据采用数字滤波、特征点提取和频域分析等方法来分析并获取体征信息。通过验证实验样本检查了获取体征信息的平均正确率达到97.6%,实验验证了该方法的测量结果准确,可以用于实时监测目标体动信息与体征信息。

Body temperature,heart rate,respiration and blood pressure are the basic manifestations of human life activities,respiratory rate and heart rate are important physiological parameters of the human body. It is important to monitor the respiratory rate and heart rate in real time. This paper uses UWB radar to realize real-time analysis of body motion monitoring and physical signs information. By collecting the data output by the radar,the amplitude signal is extracted,and the spectrum analysis is performed by frequency domain conversion. The original data is analyzed by digital filtering,feature point extraction and frequency domain analysis to obtain the vital information. By verifying the experimental samples,the average correct rate of the acquired physical information is 97.6%. The experiment verifies that the measurement results of the method are accurate and could be used to monitor the target body motion information and physical signs information in real time.