连续波生物雷达体征检测装置与实验研究  

CW Bio-radar Vital Sign Detector and Experiment Study

作　　者：胡巍[1,2] 王云峰[2] 赵章琰[2] 张海英[1,2] 

机构地区：[1]中国科学技术大学信息科学技术学院电子科学与技术系,合肥市230027 [2]中国科学院微电子研究所,北京市100029

出　　处：《中国医疗器械杂志》2014年第2期102-106,共5页Chinese Journal of Medical Instrumentation

摘　　要：非接触式的生命体征检测技术能够为健康监护提供一种有效辅助手段。该文使用微波雷达技术研制人体生命体征检测装置。根据多普勒原理设计连续波雷达电路实现人体微动信号检测;采用短时傅里叶变换与插值算法实现人体心率和呼吸频率参数提取;引入嵌入式平台实现装置的小型化设计和集成;编制嵌入式信号处理软件实现实时的信号处理、记录和显示。通过利用模拟装置和人体进行实验研究与性能评测,结果表明:检测系统可有效检测单个静止人体目标的生命体征,工作距离范围达90 cm,心率识别率达96%。Non-contact vital sign detection technique provides an effective usage in health monitoring applications. A vital sign detector was designed based on microwave bio-radar technique. Using Doppler principle, continuous wave bio-radar was designed for tiny body movement detection, short-time Fourier transform and interpolation algorithm were adopted for heart and respiration rate extraction, embedded system was used for system integration, real-time signal processing software was designed on it. Experiments were done by using simulation device and human body for research and performance evaluation. The result shows that the proposed prototype can be used for single target vital signs detection at the distance of 90 cm, and the heart rate result shows a 96%recognition rate.

关 键 词：生物雷达 生命体征检测 连续波雷达 短时傅里叶变换 

分 类 号：R318.6[医药卫生—生物医学工程]