RGB color sensor implemented with LEDs

J. D. Filoteo-Razo; J. M. Estudillo-Ayala; J. C. Hernández-Garcia; M. Trejo-Durán; A. Muñoz-Lopez; D. Jauregui-Vázquez; R. Rojas-Laguna

doi:10.1117/12.2188243

8 September 2015 RGB color sensor implemented with LEDs

J. D. Filoteo-Razo, J. M. Estudillo-Ayala, J. C. Hernández-Garcia, M. Trejo-Durán, A. Muñoz-Lopez, D. Jauregui-Vázquez, R. Rojas-Laguna

Author Affiliations +

Proceedings Volume 9571, Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems; 95710V (2015) https://doi.org/10.1117/12.2188243
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

This paper presents the design and implementation of an optical sensor to detect color changes in fruit by means of white light reflection to measure fruit ripeness in industrial and agricultural applications. The system consists of a LED RGB array including photodetectors, a power source and plastic optic fiber (POF). By means of Labview ® graphic interface we can control the power emission of the diodes digitally mixing the colors at different intensities until we achieve white light to be used as a source for the color sensor. We used an ATmega2560 microcontroller as a data collection device to monitor the colors obtained and to show them as color models using Matlab ®. We show results from tests conducted using two guava samples, observing the evolution of the color change on the fruit skin until they became overripe.

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J. D. Filoteo-Razo, J. M. Estudillo-Ayala, J. C. Hernández-Garcia, M. Trejo-Durán, A. Muñoz-Lopez, D. Jauregui-Vázquez, and R. Rojas-Laguna "RGB color sensor implemented with LEDs", Proc. SPIE 9571, Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems, 95710V (8 September 2015); https://doi.org/10.1117/12.2188243

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