Title
Agile lensing-based non-contact liquid level optical sensor for extreme environments
Abbreviated Journal Title
Opt. Commun.
Keywords
CRYOGENIC ENVIRONMENT; LASER-BEAM; FIBERS; SYSTEM; Optics
Abstract
To the best of the author's knowledge, demonstrated is the first opto-fluidic technology- based sensor for detection of liquid levels. An opto-fluidic Electronically Controlled Variable Focus Lens (ECVFL) is used to change the spatial intensity profile of the low power optical beam falling on the liquid surface. By observing, tuning and measuring the liquid surface reflected intensity profile to reach its smallest size, the liquid level is determined through a beam spot size versus ECVFL focal length calibration table. Using a 50 mu W 632.8 nm laser wavelength liquid illuminating beam, a proof-of-concept sensor is tested using engine oil, vegetable oil, and detergent fluid with measured liquid levels over a 75 cm range. This non-contact Radio Frequency (RF) modulation-free sensor is particularly suited for hazardous fluids in window-accessed sealed containers including liquid carrying vessels in Electromagnetic Interference (EMI) rich environments. (C) 2010 Elsevier B.V. All rights reserved.
Journal Title
Optics Communications
Volume
283
Issue/Number
18
Publication Date
1-1-2010
Document Type
Article
Language
English
First Page
3391
Last Page
3397
WOS Identifier
ISSN
0030-4018
Recommended Citation
"Agile lensing-based non-contact liquid level optical sensor for extreme environments" (2010). Faculty Bibliography 2010s. 686.
https://stars.library.ucf.edu/facultybib2010/686
Comments
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