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Abstract(s)
A presente dissertação tem como objetivo a investigação e aplicação do conceito de Vibration Energy Harvesting aplicado à medição dos níveis de água em reservatórios. Recorreu-se à impressão 3D para a implementação do transdutor eletromagnético para efetuar a conversão da energia cinética das vibrações em energia elétrica útil. Foram contruídos dois protótipos de transdutores eletromagnéticos com características diferentes e realizada a sua validação, optando pelo que teve melhor desempenho dos dois. Tendo como base o kit Energy Harvesting DC2080A foi desenha e ajustada a eletrónica de regulação, e o respetivo PCB, para a ligação com o microprocessador e o sensor capacitivo. Com o foco nos reservatórios de água e as condutas, foi contruído um protótipo de um sensor capacitivo com o objetivo de medir os níveis de água contida nos reservatórios, evitando assim o desperdício de água por extravasamento, que é um dos principais problemas que ocorrem nos reservatórios de água. Através da energia produzida pelo transdutor eletromagnético, tendo como origem as vibrações induzidas nas condutas de água que se encontram sob pressão com a passagem da água, todo o sistema de medida é alimentado autonomamente.
This dissertation aims to investigate and explore the concept of Vibration Energy Harvesting applied to the measurement of water levels in reservoirs. A 3D printer was use to fabricate na electromagnetic transducer to convert the kinetic energy of vibrations into useful electric Energy. Two prototypes of electromagnetic transducers were build, with different characteristics. From the validation procedure the most eficiente was selected. Based on the kit Energy Harvesting DC2080A the regulation electronics was designed and adjusted resulting in a electronic circuit implemented in a PCB. This electronic allow to convert and regulate the Energy for the microprocessor and the capacitive sensor. With the focus on water reservoirs and pipelines, a prototype of a capacitive sensor was made with the objective of measuring the levels of water present in the reservoirs, thus avoiding the waste of water through extravasation, which is one of the main problems occurring in water reservoir. Through the energy that is produced by the electromagnetic transducer and by the induction of vibration in the water pipes that are under pressure with the passage of the water, the whole system is completely autonomous.
This dissertation aims to investigate and explore the concept of Vibration Energy Harvesting applied to the measurement of water levels in reservoirs. A 3D printer was use to fabricate na electromagnetic transducer to convert the kinetic energy of vibrations into useful electric Energy. Two prototypes of electromagnetic transducers were build, with different characteristics. From the validation procedure the most eficiente was selected. Based on the kit Energy Harvesting DC2080A the regulation electronics was designed and adjusted resulting in a electronic circuit implemented in a PCB. This electronic allow to convert and regulate the Energy for the microprocessor and the capacitive sensor. With the focus on water reservoirs and pipelines, a prototype of a capacitive sensor was made with the objective of measuring the levels of water present in the reservoirs, thus avoiding the waste of water through extravasation, which is one of the main problems occurring in water reservoir. Through the energy that is produced by the electromagnetic transducer and by the induction of vibration in the water pipes that are under pressure with the passage of the water, the whole system is completely autonomous.
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Keywords
Conversor Ac/Dc Mems Microprocessador Recolha de Energia Sensor Capacitivo Transdutores Eletromagnéticos Veh