Fiber optic system to measure adulteration in liquids using an RGB detection
In this paper, we propose a fiber optic system to measure the changes in the RGB composition of light in liquid solutions using a plastic optical fiber (POF) as an intrinsic sensor. The measurement system is composed of a 3 W white light-emitting diode as the light source, a 20 cm long U-shaped POF,...
Saved in:
Published in | Suplemento de la Revista Mexicana de Física Vol. 2; no. 1 Jan-Mar; pp. 98 - 102 |
---|---|
Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
31.03.2021
|
Online Access | Get full text |
Cover
Loading…
Summary: | In this paper, we propose a fiber optic system to measure the changes in the RGB composition of light in liquid solutions using a plastic optical fiber (POF) as an intrinsic sensor. The measurement system is composed of a 3 W white light-emitting diode as the light source, a 20 cm long U-shaped POF, and an RGB photodiode array that allows us to detect the changes in the RGB composition of the light propagating through the POF. The U-shaped POF has a length of 5 mm without coating, which remains in contact with the liquid solutions. The tests were performed with different concentrations of a mixture of tequila and water. The results obtained with the RGB photodiode array showed that the system has a resolution of 0.39 % and a color change sensitivity of 0.1, 0.6, and 0.4 8–bits/% of sample for red, green, and blue colors, respectively. These results will allow us to design a low-cost prototype to measure the amount of adulteration in liquids. |
---|---|
ISSN: | 2683-2585 2683-2585 |
DOI: | 10.31349/SuplRevMexFis.2.1.98 |