Colorimeter construction of a low cost for use in agricultural product

Authors

  • Jedman Dantas Mota Universidade Federal de Campina Grande, Campina Grande, Paraíba, Brasil.
  • Alexandre José de Melo Queiroz Universidade Federal de Campina Grande, Campina Grande, Paraíba, Brasil.
  • Rossana Maria Feitosa de Figueirêdo Universidade Federal de Campina Grande, Campina Grande, Paraíba, Brasil.
  • Karla dos Santos Melo de Sousa Universidade Federal do Vale do São Francisco, Petrolina, Pernambuco, Brasil.

DOI:

https://doi.org/10.14295/cs.v6i3.697

Keywords:

Instrumental analysis, Color, Reflectance

Abstract

This work aimed to build a low cost colorimeter was constructed, whose operation principle consists of determining a sample reflectance respecting a White Standard and compute the coordinates of L*a*b* color space using the CIE (Comission Internationale d’Eclairage – International Illumination Commission) equations. The equipment was constructed with wood pressed, and operates with 21 LED’s divided into 7 groups according to their color. The sensor has a similar response to the human eye is ideal for applications in photometry. The performance of the instrument was compared to a commercial model CR-10, in which a linear relationship was obtained between the chromaticity coordinates of the two units, with the calibration performed with 60 samples of colored powder.

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References

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V6N3

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Published

2015-12-29

How to Cite

Mota, J. D., Queiroz, A. J. de M., Figueirêdo, R. M. F. de, & Sousa, K. dos S. M. de. (2015). Colorimeter construction of a low cost for use in agricultural product. Comunicata Scientiae, 6(3), 373–384. https://doi.org/10.14295/cs.v6i3.697

Issue

Vol. 6 No. 3 (2015)

Section

Original Article

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