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首页> 外文会议>Conference on Advanced Biomedical and Clinical Diagnostic Systems >A remote and non-contact method for obtaining the blood-pulse waveform with a laser Doppler vibrometer
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A remote and non-contact method for obtaining the blood-pulse waveform with a laser Doppler vibrometer

机译：一种用于使用激光多普勒振动计获得血脉冲波形的远程和非接触方法

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The use of lasers to remotely and non-invasively detect the blood pressure waveform of humans and animals would provide a powerful diagnostic tool. Current blood pressure measurement tools, such as a cuff, are not useful for burn and trauma victims, and animals require catheterization to acquire accurate blood pressure information. The purpose of our sensor method and apparatus invention is to remotely and non-invasively detect the blood pulse waveform of both animals and humans. This device is used to monitor an animal or human's skin in proximity to an artery using radiation from a laser Doppler vibrometer (LDV). This system measures the velocity (or displacement) of the pulsatile motion of the skin, indicative of physiological parameters of the arterial motion in relation to the cardiac cycle. Tests have been conducted that measures surface velocity with an LDV and a signal-processing unit, with enhanced detection obtained with optional hardware including a retro-reflector dot. The blood pulse waveform is obtained by integrating the velocity signal to get surface displacement using standard signal processing techniques. Continuous recording of the blood pulse waveform yields data containing information on cardiac health and can be analyzed to identify important events in the cardiac cycle, such as heart rate, the timing of peak systole, left ventricular ejection time and aortic valve closure. Experimental results are provided that demonstrates the current capabilities of the optical, non-contact sensor for the continuous, non-contact recording of the blood pulse waveform without causing patient distress.
机译：使用激光器以远程和非侵入性地检测人类和动物的血压波形将提供强大的诊断工具。当前血压测量工具（例如袖带）对燃烧和创伤受害者无用，动物需要导管血压信息。我们的传感器方法和装置的目的是远程和非侵入性地检测动物和人类的血脉冲波形。该装置用于使用来自激光多普勒振动计（LDV）的辐射，监测动物或人体皮肤靠近动脉。该系统测量皮肤脉动运动的速度（或位移），指示与心动周期相关的动脉运动的生理参数。已经进行了测试用LDV和信号处理单元测量表面速度，通过包括复古反射点的可选硬件获得增强的检测。通过将速度信号集成到使用标准信号处理技术来获得表面位移来获得血脉冲波形。血脉冲波形的连续记录产生含有关于心脏健康信息的数据，并且可以分析以识别心脏循环中的重要事件，例如心率，峰收缩峰，左心室喷射时间和主动脉瓣闭合。提供了实验结果，表明光学，非接触式传感器的电流能力，用于血脉冲波形的连续，非接触式记录而不引起患者遇险。

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