非接触呼吸与心跳监护装置的研制

摘要

Physiological monitoring devices in modern clinical area are basical y used electrodes or sensors directly touching the surface of human subject body, which wil increase physiological and psychological load of the subjects. In order to realize non-contact monitoring of respiration and heartbeat, firstly, the micro bioradar was used to detect human body motion signal. Then, the respiration signal and heartbeat signal was extracted from the body-motion signal by using signal and conditioning circuits, digital filter and signal processing. Final y, the results of heart rate and breathing rate was wirelessly transmitted. The experimental results showed that the device for non-contact monitoring of respiration and heartbeat waveforms has advantages of smal volume, low power consumption, which can realize the monitoring of physiological parameters in real time.%目前，临床上所使用的生理参数监护装置均采用电极或传感器直接接触人体，增加了被测者生理和心理负荷。为了实现非接触呼吸和心跳检测，首先利用微型化生物雷达实现了对人体体动信号的非接触检测，然后对体动信号进行信号调理，从中提取出呼吸信号与心动信号，最后将呼吸和心跳监测波形进行无线传输。实验结果表明，该非接触呼吸与心跳波形监护装置体积小、功耗低，可以实现临床生理参数的实时监测。