用于耳戴式心率监测的灵活、低噪声反射式 PPG 传感器平台

2009 Sixth International Workshop on Wearable and Implantable Body Sensor Networks Pub Date : 2009-06-03 DOI:10.1109/BSN.2009.16

J. Patterson, D. McIlwraith, Guang-Zhong Yang

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引用次数: 75

摘要

本文介绍了一种新型耳戴式反射式光敏血压计（PPG）传感器，该传感器解决了传感器与皮肤表面耦合的机械复杂性问题，其检测电路可最大限度地减少环境噪声伪影。灵活的光电传感器结构可适应各种皮肤表面轮廓。发光二极管（LED）调制和独特的集成光电流解调器可降低对宽带噪声的敏感性，并可从所需的 PPG 信号中减去环境光。实验结果表明，灵敏度对传感器位置和应用压力变化的影响很小。模拟还表明，光电检测方法对高水平的宽带噪声有很强的抗干扰能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Flexible, Low Noise Reflective PPG Sensor Platform for Ear-Worn Heart Rate Monitoring

This paper presents a novel ear-worn reflective photoplethysmography (PPG) sensor that addresses the mechanical complexities of coupling the sensor to the surface of the skin and a detection circuit that minimises ambient noise artefacts. The flexible optoelectronic transducer structure can adapt to a variety of skin surface contours. Light emitting diode (LED) modulation and a unique integrating photocurrent demodulator reduce susceptibility to wideband noise and allow subtraction of ambient light from the desired PPG signal. Experimental results demonstrate that the sensitivity is robust to sensor location and application pressure variations. Simulations also show that the photodetection method is resilient against high levels of wideband noise.

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2009 Sixth International Workshop on Wearable and Implantable Body Sensor Networks

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