用k波段雷达传感器检测呼吸存在时的多普勒心电图

Shuqin Dong, Changzhan Gu, L. Ran, Jun-Fa Mao
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引用次数: 1

摘要

在这项工作中,设计了一个k波段24 ghz交流耦合多普勒雷达传感器,用于测量人类呼吸存在时的多普勒心电图(DCG)。交流耦合架构避免了直流调谐,硬件实现简单。此外,提出了一种新的DCG提取算法,在受试者无需屏住呼吸的情况下,从胸壁皮肤散射的多普勒雷达信号中提取准确的DCG。同时采用PPG传感器作为参考。实验结果表明,本工作得到的DCG与PPG记录的心脏活动吻合良好。它还有许多特征点,包含心脏的速度和力量信息,非常适合长期的个人日常保健。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Doppler Cardiogram Detection in the Presence of Respiration with a K-band Radar Sensor
In this work, a K-band 24-GHz ac-coupled Doppler radar sensor was designed to measure the Doppler Cardiogram (DCG) in the presence of human respiration. The AC coupling architecture avoids dc-tuning and has simple hardware implementation. In addition, a novel DCG extraction algorithm was proposed to extract the accurate DCG from the Doppler radar signals scattered by the skin of the chest wall with no need for subject holding his/her breath. A PPG sensor was simultaneously employed as the reference. Experimental results show that the DCG obtained in this work is aligned well with the cardiac activities recorded by PPG. It also has many characteristic points which contain the velocity and strength information of the heart, which is highly desirable for long-term personal daily healthcare.
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