Table of Contents
ISRN Sensor Networks
Volume 2012, Article ID 618136, 7 pages
Research Article

Polymer Optical Fiber Intensity-Based Sensor for Liquid-Level Measurements in Volumetric Flasks for Industrial Application

Electronics Technology Department, Carlos III University of Madrid, Avenida de la Universidad 30, Leganés, 28911 Madrid, Spain

Received 22 March 2012; Accepted 8 May 2012

Academic Editors: T.-S. Chen, J.-F. Myoupo, L. Reggiani, and Y.-C. Wang

Copyright © 2012 D. S. Montero and C. Vázquez. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A low-cost intensity-based polymer optical fiber (POF) sensor for liquid detection applied to volumetric flasks is presented. Experimental results demonstrate the viability of the POF-based sensor system in a high-accuracy liquid level measurement scenario. Moreover, a wireless mesh sensor network based on ZigBee specification protocol to address multiplexed POF-based sensor is also developed. Experimental results demonstrate the feasibility to address a high number of optical sensors in an industrial process framework by means of this low-cost wireless solution.