光容积图
耳垂
光电二极管
光纤
材料科学
信号(编程语言)
光学
光纤传感器
生物医学工程
光电子学
计算机科学
电信
物理
医学
病理
程序设计语言
无线
作者
Aisha Morley,John J. Davenport,Michelle J. Hickey,Justin P. Phillips
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2017-11-30
卷期号:56 (11): 1-1
被引量:2
标识
DOI:10.1117/1.oe.56.11.117111
摘要
Photoplethysmography (PPG) is a widely used technique for measuring blood oxygen saturation, commonly using an external pulse oximeter applied to a finger, toe, or earlobe. Previous research has demonstrated the utility of direct monitoring of the oxygen saturation of internal organs, using optical fibers to transmit light between the photodiode/light emitting diode and internal site. However, little research into the optimization and standardization of such a probe has yet been carried out. This research establishes the relationship between fiber separation distance and PPG signal, and between fiber core width and PPG signal. An ideal setup is suggested: 1000-μm fibers at a separation distance of 3 to 3.5 mm, which was found to produce signals around 0.35 V in amplitude with a low variation coefficient.
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