Fiber optic sensor for the measurement of respiratory chest circumference changes
Fiber optic sensor for the measurement of respiratory chest circumference changes
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DOI：
10.1117/1.429909
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发表时间：
1999-04-01
影响因子：
3.5
通讯作者：
Nitzan, M
中科院分区：
文献类型：
--
作者：
Babchenko, A;Khanokh, B;Nitzan, M
用于测量呼吸深度的光纤传感器已经开发出来。该传感器由弯曲光纤组成，连接到胸带的弹性部分，使其曲率半径在呼吸过程中因呼吸胸围变化（RCCC）而变化。通过弯曲光纤的光传输测量提供了有关其曲率变化的信息，因为较高部分的光通过弯曲至较低曲率半径的光纤的芯包层表面逸出。该传感器可以定量测量 RCCC，尽管是相对而言的，并且它足够灵敏，可以检测由于心跳而引起的胸围变化。 RCCC 的测量与光电体积描记法 (PPG) 同时进行，PPG 是通过光吸收心脏引起的组织中的血容量变化进行测量，并且发现 RCCC 和 PPG 信号的某些参数之间存在显着相关性。光纤呼吸深度传感器能够对呼吸引起的心血管参数变化进行定量评估，(C) 1999 年光电仪器工程师学会。 [S1083-3668(99)00402-5]。
A fiber optic sensor for the measurement of the respiratory depth has been developed. The sensor is composed of a bent optic fiber which is connected to an elastic section of a chest belt so that its radius of curvature changes during respiration due to respiratory chest circumference changes (RCCC). The measurement of light transmission through the bent fiber provides information on its changes in curvature since a higher fraction of Light escapes through the core-cladding surface of a fiber bent to a lower radius of curvature. The sensor can quantitatively measure the RCCC, although in relative terms, and it is sensitive enough to detect changes of the chest circumference due to the heart beat. Measurements of the RCCC were simultaneously performed with photoplethysmography (PPG)-the measurement by light absorption of the cardiac induced blood volume changes in the tissue-and a significant correlation was found between the RCCC and some parameters of the PPG signal. The fiber optic respiratory depth sensor enables a quantitative assessment of the respiratory induced changes in the cardiovascular parameters, (C) 1999 Society of Photo-Optical Instrumentation Engineers. [S1083-3668(99)00402-5].