U-Shaped Plastic Fiber Optic Sensor for Measuring Adulteration in Liquids via RGB Color Changes

Advances in fiber technology have enabled the integration of plastic optical fibers (POFs) with light-emitting diodes (LEDs) for the development of simple, cost-effective, and sensitive sensing systems. The aim of this letter was to develop a low-cost device for measuring adulteration in liquids. In...

Full description

Saved in:
Bibliographic Details
Published in:IEEE sensors letters 2021-12, Vol.5 (12), p.1-4
Main Authors: Filoteo-Razo, Jose, Vera-Duarte, Oscar, Estudillo-Ayala, Julian, Hernandez-Garcia, Juan, Jauregui-Vazquez, Daniel, Martinez-Angulo, Jose, Elizondo-Leal, Juan, Rojas-Laguna, Roberto
Format: Article
Language:English
Subjects:
Change detection
Color sensitivity
Composition
Evanescent waves
evanescent waves (EWs)
fiber optic sensors
Fiber optics
Fiber technology
Image color analysis
Light emitting diodes
Light sources
Liquids
Low cost
Measuring instruments
Optical fiber sensors
Optical fibers
Optoelectronics
Photodiodes
Plastic fibers
plastic optical fiber (POF)
RGB color
Sensor systems
Sensors
Spirits
System effectiveness
Tequila
U-shaped
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Advances in fiber technology have enabled the integration of plastic optical fibers (POFs) with light-emitting diodes (LEDs) for the development of simple, cost-effective, and sensitive sensing systems. The aim of this letter was to develop a low-cost device for measuring adulteration in liquids. In this letter, we present a low-cost optoelectronic system based on a U-shaped POF intrinsic sensor to measure the changes in RGB composition of light transmitted as an evanescent wave through liquid solutions (tequila-water mixtures). The system comprises a 3 W white LED as the light source, a 20-cm-long U-shaped POF, and an RGB photodiode (PD) array that detects changes in the RGB composition of light propagating through the POF. An uncoated 5-mm-long U-shaped POF is in contact with the analyte solution during the measurements. The system is tested using tequila-water mixtures of different concentrations. The RGB PD response is recorded digitally, which improves the efficiency and accuracy of the measurement while reducing the sensitivity of the sensor to external disturbances. The results indicate a system resolution of 0.3 wt% with respect to the tequila concentration, as well as red, green, and blue color sensitivities of 0.1, 0.6, and 0.4 8-bits/wt%, respectively. These findings can contribute to the development of an automated system that efficiently measures adulteration in liquids such as distilled spirits.
ISSN:2475-1472
2475-1472
DOI:10.1109/LSENS.2021.3128291