Design and Test of a Low-Cost RGB Sensor for Online Measurement of Microalgae Concentration within a Photo-Bioreactor

Sensors

Micaela Benavides²  Johan Mailier²  Anne-Lise Hantson²  Gerardo Muñoz³  Alejandro Vargas³  Jan Van Impe¹  Alain Vande Wouwer² 

[1] Department of Chemical Engineering, Catholic University of Leuven, 3001 Leuven, Belgium; E-Mail:;BioSys, University of Mons, Boulevard Dolez 31, 7000 Mons, Belgium; E-Mails:;Unidad Académica Juriquilla, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Querétaro 76230, Mexico; E-Mails:

关键词: biomass concentration;    microalgae;    bioprocess;    instrumentation;    state estimation;    monitoring;    Luenberger observer;    Arduino board;   

DOI  :  10.3390/s150304766

来源: mdpi

【 摘 要 】

In this study, a low-cost RGB sensor is developed to measure online the microalgae concentration within a photo-bioreactor. Two commercially available devices, i.e., a spectrophotometer for offline measurements and an immersed probe for online measurements, are used for calibration and comparison purposes. Furthermore, the potential of such a sensor for estimating other variables is illustrated with the design of an extended Luenberger observer.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.