Browsing by Author "Catarino, Rui Pedro Teixeira de Pina"
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- IoT architecture for sustainable monitoring and management of smart aquaponics systems in urban environmentsPublication . Catarino, Rui Pedro Teixeira de Pina; Soares, Christophe; Moreira, Rui SilvaAquaponic systems provide a sustainable combination of fish and vegetable farming, i.e., join fishes in tanks (aquaculture) together with growing plants without soil (hydroponics). Fishes provide natural water fertilisation for the plants, and plants help purify the water for fishes. Aquaponic systems are therefore sustainable solutions to provide fresh fish and vegetables to families, communities or even be explored as future enterprise businesses in any climate. Aquaponic farming systems take advantage of the symbiosis between fishes and vegetables, thus becoming more sustainable and allowing to grow more food with less water, land, and labor than traditional agriculture. However, one of the problems in aquaponic systems is the presence of high levels of ammonia that is toxic to most fish. For this reason, it is essential to measure the levels of ammonia weekly. The IoT system presented in this research provides an intelligent way to measure the toxicity of the ammonia in an aquaponics system, as a function of the ammonia concentration and the pH present in the system. The proposed solution combines the use of colorimetric tests commonly used in the measurement of ammonia, with computer vision and pH sensors, to automate the detection of information about the toxicity of the ammonia in water samples. The developed solution was also integrated in an IoT Cloud Computing architecture for supporting the autonomous management of aquaponics systems and their sustainable use in urban environments.