波形
雷达
极高频率
脉冲波
可穿戴计算机
声学
脉搏(音乐)
噪音(视频)
脉冲多普勒雷达
电子工程
信号(编程语言)
计算机科学
物理
工程类
雷达成像
电信
嵌入式系统
人工智能
探测器
抖动
图像(数学)
程序设计语言
作者
Jessi E. Johnson,Oliver Shay,Chris Kim,Catherine Liao
标识
DOI:10.1109/tbcas.2019.2948581
摘要
Wearable monitors for measuring vital signs such as blood pressure will greatly impact the medical field. This work presents a millimeter-wave, radar-based system for performing accurate measurements of arterial pulse waveforms without contacting the region that is pulsing. Electromagnetic and radar-system simulation models are utilized to demonstrate the viability and safety of this approach. This is followed by hardware/software implementation and a study on 12 human subjects. Measured radial arterial waveforms exhibit signal strengths that are well above the noise floor of the system and a morphology that would be expected in an arterial pulse. Finally, comparison of the radar-based signals with a reference tonometer indicates a strong correlation between waveforms, as well as similar spectral signatures. The results observed suggest a millimeter-wave based approach for arterial pulse detection is very promising for future applications in pulse wave analysis and pulse transit time measurement for blood pressure tracking.
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