Quasi-distributed liquid level measurement with adaptable optical fiber transducers

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URI: http://hdl.handle.net/10902/2359
ISSN: 1996-756X
ISSN: 0277-786X
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Autoría
Lomer Barboza, Mauro MatíasAutoridad Unican; Quintela Incera, AntonioAutoridad Unican; Quintela Incera, María ÁngelesAutoridad Unican; Cobo García, AdolfoAutoridad Unican; López Higuera, José MiguelAutoridad Unican
Fecha
2007-07-04
Derechos
© 2007 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Publicado en
Proceedings of SPIE, 2007, vol. 6619, 661917
Third European Workshop on Optical Fibre Sensors, Nápoles, 2007
Editorial
SPIE Society of Photo-Optical Instrumentation Engineers
Palabras clave
Liquid level measurement
Side-polishing
Bend losses fiber
Plastic optical fiber
Resumen/Abstract
A level and flexible quasi-distributed liquid sensor based on the changes in the light transmittance in a plastic optical fiber cable is proposed. The measurement points are constituted by small areas created by side-polishing on a curved fiber and the removal of a portion of the core. These points are distributed and adapted on each full-turn of a spire of fiber built on a cylindrical tube vertically positioned in a tank. The changes between the refractive indexes of air and liquid generate a signal power proportional to the position and level of the liquid. The sensor system was successfully demonstrated in the laboratory and experimental results of three prototypes with 10, 8, and 5 measurement points and with bend radius of 5mm are presented in this paper.
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