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目的:在穿透非金属障碍物情况下,用生物雷达实现对人体的呼吸和体动信号的现场、实时、非接触监测。方法:设计基于超宽谱(UWB)生物雷达的实时监测系统和参数;采用多线程编程技术,通过无线网络方式实时采集携带人体微弱生命体征的生物雷达回波信号;实时对生物雷达回波信号进行处理。结果:从生物雷达的回波信号中能有效提取出微弱生命呼吸信号和体动信号,并实时显示波形。结论:该系统实现了在穿透障碍物情况下现场、实时、非接触监测人体微弱生命信号,为平、战时更有效地实施医学救援提供了一个新的方法和手段,对临床非接触监护的实现也具有一定意义。 相似文献
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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%。 相似文献
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目的:将无线局域网(wirelesslocalareanetworks,WLAN)技术应用于搜救生物雷达中,实现对被压埋人员生命体征的手持式实时监测。方法:使用C#语言,基于PocketPC平台,应用套接字(Socket)网络编程方法、多线程编程技术和图形设备接口(graphicsdeviceinterfaceplus,GDI+)技术实现生物雷达探测呼吸波形在个人数字助手(personaldigitalassistant、PDA)上的实时动态显示。结果:该系统实现了基于PDA的压埋人员微弱生命体征的实时监测,可为救援人员提供动态、翔实的生命特征,以便科学施救。结论:该系统可以克服以往探测过程中只能给出有无目标而不能对目标生理状态进行监测的缺点,为搜救人员制订救援方案提供参考。 相似文献
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A bio-radar system is presented for vital signs acquisition, using textile antennas manufactured with a continuous substrate that integrates the ground plane. Textile antennas were selected to be used in the RF (Radio Frequency) front-end, rather than those made of conventional materials, to further integrate the system in a car seat cover and thus streamline the industrial manufacturing process. The development of the novel substrate material is described in detail, as well as its characterization process. Then, the antenna design considerations are presented. The experiments to validate the textile antennas operation by acquiring the respiratory signal of six subjects with different body structures while seated in a car seat are presented. In conclusion, it was possible to prove that bio-radar systems can operate with textile-based antennas, providing accurate results of the extraction of vital signs. 相似文献
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