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Development and evaluation of a piezoelectret insole for energy harvesting appl...
Amorim, Marcio L. M.; Ginja, Gabriel Augusto; Moreira, Melkzedekue de Moraes Alcântara Calabrese; Junior, Oswaldo Hideo AndoThis work presents the development and experimental validation of a low-cost, piezoelectret-based energy harvesting system integrated into a custom insole, as a promising alternative for future self-powered wearable electronics. The design utilizes eight thermoformed Teflon piezoelectrets, strategically positioned in high-impact regions (heel and forefoot), to convert footstep-induced mechanical motion into ele...
Low-cost/high-precision smart power supply for data loggers
Amorim, Marcio L. M.; Ginja, Gabriel Augusto; Carmo, João Paulo; Moreira, Melkzedekue Moraes Alcântara; Siqueira, Adriano Almeida GoncalvesThis paper presents a low-cost/high-precision smart power supply for application on data loggers. The microprocessor unit is the brain of the system and manages the events and was optimized to provide electrical energy to the electronic devices under normal operation and under the presence of disruptive events. The measurements showed that when switching either from battery to AC or from AC to battery, neither ...
Process optimization of the flaring gas for field applications
Ibañez-Gómez, Luisa Fernanda; Albarracín-Quintero, Sebastian; Céspedes-Zuluaga, Santiago; Montes-Páez, Erik; Ando Junior, Oswaldo HideoDuring petroleum industry operations, burning flammable gas components in the flaring stacks is common, normally a symbol for stable production, but flaring these components creates harmful emissions for the environment. This flaring gas has components with a high quantity of heating power, an important measurement that quantifies the energy that can potentially be obtained from this wasted resource. This paper...