Optical Camera Communication as an Enabling Technology for Microalgae Cultivation

Optical Camera Communication (OCC) systems have a potential application in microalgae production plants. In this work, a proof-of-concept prototype consisting of an artificial lighting photobioreactor is proposed. This reactor optimises the culture’s photosynthetic efficiency while transmitting on-o...

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Main Authors: Cristo Jurado-Verdu, Victor Guerra, Vicente Matus, Carlos Almeida, Jose Rabadan
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/21/5/1621
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author Cristo Jurado-Verdu
Victor Guerra
Vicente Matus
Carlos Almeida
Jose Rabadan
author_facet Cristo Jurado-Verdu
Victor Guerra
Vicente Matus
Carlos Almeida
Jose Rabadan
author_sort Cristo Jurado-Verdu
collection DOAJ
description Optical Camera Communication (OCC) systems have a potential application in microalgae production plants. In this work, a proof-of-concept prototype consisting of an artificial lighting photobioreactor is proposed. This reactor optimises the culture’s photosynthetic efficiency while transmitting on-off keying signals to a rolling-shutter camera. Upon reception, both signal decoding and biomass concentration sensing are performed simultaneously using image processing techniques. Moreover, the communication channel’s theoretical modelling, the data rate system’s performance, and the plant distribution requirements and restrictions for a production-scale facility are detailed. A case study is conducted to classify three different node arrangements in a real facility, considering node visibility, channel capacity, and space exploitation. Finally, several experiments comprising radiance evaluation and Signal-to-Noise Ratio (SNR) computation are performed at different angles of view in both indoor and outdoor environments. It is observed that the Lambertian-like emission patterns are affected by increasing concentrations, reducing the effective emission angles. Furthermore, significant differences in the SNR, up to 20 dB, perceived along the illuminated surface (centre versus border), gradually reduce as light is affected by greater dispersion. The experimental analysis in terms of scattering and selective wavelength attenuation for green (<i>Arthrospira platensis</i>) and brown (<i>Rhodosorus marinus</i>) microalgae species determines that the selected strain must be considered in the development of this system.
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spelling doaj.art-861c46aac2fe4ebc973083344a2a96662023-12-11T18:28:15ZengMDPI AGSensors1424-82202021-02-01215162110.3390/s21051621Optical Camera Communication as an Enabling Technology for Microalgae CultivationCristo Jurado-Verdu0Victor Guerra1Vicente Matus2Carlos Almeida3Jose Rabadan4Institute for Technological Development and Innovation in Communications (IDeTIC), Universidad de Las Palmas de Gran Canaria (ULPGC), 35017 Las Palmas de Gran Canaria, Canary Islands, SpainInstitute for Technological Development and Innovation in Communications (IDeTIC), Universidad de Las Palmas de Gran Canaria (ULPGC), 35017 Las Palmas de Gran Canaria, Canary Islands, SpainInstitute for Technological Development and Innovation in Communications (IDeTIC), Universidad de Las Palmas de Gran Canaria (ULPGC), 35017 Las Palmas de Gran Canaria, Canary Islands, SpainSpanish Bank of algae (BEA), Instituto de Oceanografía y Cambio Global (IOCAG), Fundación Canaria Parque Científico y Tecnológico, Universidad de Las Palmas de Gran Canaria (ULPGC), 35230 Las Palmas de Gran Canaria, Canary Islands, SpainInstitute for Technological Development and Innovation in Communications (IDeTIC), Universidad de Las Palmas de Gran Canaria (ULPGC), 35017 Las Palmas de Gran Canaria, Canary Islands, SpainOptical Camera Communication (OCC) systems have a potential application in microalgae production plants. In this work, a proof-of-concept prototype consisting of an artificial lighting photobioreactor is proposed. This reactor optimises the culture’s photosynthetic efficiency while transmitting on-off keying signals to a rolling-shutter camera. Upon reception, both signal decoding and biomass concentration sensing are performed simultaneously using image processing techniques. Moreover, the communication channel’s theoretical modelling, the data rate system’s performance, and the plant distribution requirements and restrictions for a production-scale facility are detailed. A case study is conducted to classify three different node arrangements in a real facility, considering node visibility, channel capacity, and space exploitation. Finally, several experiments comprising radiance evaluation and Signal-to-Noise Ratio (SNR) computation are performed at different angles of view in both indoor and outdoor environments. It is observed that the Lambertian-like emission patterns are affected by increasing concentrations, reducing the effective emission angles. Furthermore, significant differences in the SNR, up to 20 dB, perceived along the illuminated surface (centre versus border), gradually reduce as light is affected by greater dispersion. The experimental analysis in terms of scattering and selective wavelength attenuation for green (<i>Arthrospira platensis</i>) and brown (<i>Rhodosorus marinus</i>) microalgae species determines that the selected strain must be considered in the development of this system.https://www.mdpi.com/1424-8220/21/5/1621optical camera communicationsvisible light communicationsmicroalgae cultivationartificial lightinglight managementsmart farming
spellingShingle Cristo Jurado-Verdu
Victor Guerra
Vicente Matus
Carlos Almeida
Jose Rabadan
Optical Camera Communication as an Enabling Technology for Microalgae Cultivation
Sensors
optical camera communications
visible light communications
microalgae cultivation
artificial lighting
light management
smart farming
title Optical Camera Communication as an Enabling Technology for Microalgae Cultivation
title_full Optical Camera Communication as an Enabling Technology for Microalgae Cultivation
title_fullStr Optical Camera Communication as an Enabling Technology for Microalgae Cultivation
title_full_unstemmed Optical Camera Communication as an Enabling Technology for Microalgae Cultivation
title_short Optical Camera Communication as an Enabling Technology for Microalgae Cultivation
title_sort optical camera communication as an enabling technology for microalgae cultivation
topic optical camera communications
visible light communications
microalgae cultivation
artificial lighting
light management
smart farming
url https://www.mdpi.com/1424-8220/21/5/1621
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AT carlosalmeida opticalcameracommunicationasanenablingtechnologyformicroalgaecultivation
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