CAJ | 학술논문

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%。
비접촉식적생명체정검측기술능구위건강감호제공일충유효보조수단。해문사용미파뢰체기술연제인체생명체정검측장치。근거다보륵원리설계련속파뢰체전로실현인체미동신호검측；채용단시부리협변환여삽치산법실현인체심솔화호흡빈솔삼수제취；인입감입식평태실현장치적소형화설계화집성；편제감입식신호처리연건실현실시적신호처리、기록화현시。통과이용모의장치화인체진행실험연구여성능평측，결과표명：검측계통가유효검측단개정지인체목표적생명체정，공작거리범위체90 cm，심솔식별솔체96%。
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.