FBG Water-Level Transducer Based on PVC-Cantilever and Rubber-Diaphragm Structure

Vorathin, E. and Hafizi, Z.M. and Ismail, Nurazima and Loman, M. and Aizzuddin, A.M. and Lim, Kok Sing and Ahmad, Harith (2019) FBG Water-Level Transducer Based on PVC-Cantilever and Rubber-Diaphragm Structure. IEEE Sensors Journal, 19 (17). pp. 7407-7414. ISSN 1530-437X, DOI https://doi.org/10.1109/JSEN.2019.2916469.

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Official URL: https://doi.org/10.1109/JSEN.2019.2916469


The use of FBG sensors in water level monitoring has shown great advantages over the use of conventional electrical sensors. However, much effort is still required to increase their sensitivity towards water level measurement with eliminated sensitivity towards temperature. Here, the FBG was bonded on a PVC polymer plastic cantilever beam and rubber diaphragm structure. The sensing mechanism was based on the differential FBG method. Variations of the water level from 0 to 100 cm obtained the sensitivity of 0.0639 nm/cm with the linearity of 98.06%. The poor linearity was mainly due to the manual fabrication errors. However, this uncertainty can be overcome through the polynomial regression fit in determining the water level measurement. The measured water level was closed to the actual water level at a tolerance of ±2 cm. For temperature effects, the sensitivity was inconspicuous, recorded at only 0.0003 nm/°C across the range of 10 °C to 60 °C. © 2001-2012 IEEE.

Item Type: Article
Uncontrolled Keywords: Fiber Bragg grating (FBG); temperature compensation; water level
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Photonics Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 03 Dec 2019 04:59
Last Modified: 03 Dec 2019 04:59
URI: http://eprints.um.edu.my/id/eprint/23194

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