Plastic optical fibre sensor for spine bending monitoring with power fluctuation compensation

Mohd Anwar, Zawawi and O’Keeffe, Sinead and Lewis, Elfed (2013) Plastic optical fibre sensor for spine bending monitoring with power fluctuation compensation. Sensors, 13 (11). pp. 14466-14483. ISSN 1424-8220. (Published)

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This paper presents the implementation of power fluctuation compensation for an intensity-based optical fibre bending sensor aimed at monitoring human spine bending in a clinical environment. To compensate for the light intensity changes from the sensor light source, a reference signal was provided via the light reflection from an aluminum foil surface fixed at a certain distance from the source fibre end tips. From the results, it was found that the investigated sensor compensation technique was capable of achieving a 2° resolution for a bending angle working range between 0° and 20°. The study also suggested that the output voltage ratio has a 0.55% diversion due to input voltage variation between 2.9 V and 3.4 V and a 0.25% output drift for a 2 h measurement. With the achieved sensor properties, human spine monitoring in a clinical environment can potentially be implemented using this approach with power fluctuation compensation

Item Type: Article
Uncontrolled Keywords: Plastic optical fibre sensor; Spine monitoring; Power fluctuation compensation; Intensity modulation technique
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Electrical & Electronic Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 10 Dec 2019 01:14
Last Modified: 10 Dec 2019 01:14
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