Paper
2 June 2011 A discrete liquid level sensor based on fiber Bragg grating
Dongcao Song, Jilin Zou, David Low, Josephine Armando, Tom Koscika, Hongliang Cui
Author Affiliations +
Abstract
A discrete liquid level sensor based on fiber Bragg grating (FBG) that is suitable for liquid level monitoring is proposed. FBG (fiber Bragg grating) is embedded in a cantilever beam which is made of carbon fiber composite. And an iron sheet is bonded with the end of cantilever beam. For the float, a magnet is bonded with the float. When the liquid level rises or fall, the float will move up or down. The cantilever beam will bend downward or upward, it will induce strain on the FBG. Therefore, the Bragg wavelength of FBG will shift. An extra reference grating was utilized for temperature compensation.
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Dongcao Song, Jilin Zou, David Low, Josephine Armando, Tom Koscika, and Hongliang Cui "A discrete liquid level sensor based on fiber Bragg grating", Proc. SPIE 8028, Fiber Optic Sensors and Applications VIII, 80280H (2 June 2011); https://doi.org/10.1117/12.883049
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KEYWORDS
Fiber Bragg gratings

Liquids

Sensors

Carbon

Composites

Fiber optics sensors

Iron

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