Design of a smart LED lamp to monitor insect populations in an integrated pest management approach/Desenvolvimento de uma lampada LED inteligente para monitoramento de insetos no manejo integrado de pragas

HIGHLIGHTS: Study presents design and production of an LED lamp for photovoltaic light traps. The LED lamp switches on and off automatically, controls the battery charge and indicates the operating status of the system. The LED lamp is a superior substitute for the standard fluorescent lamps used in conventional light traps. This study aimed to present the design and field test results of an LED (light emitting diode) lamp for integrated pest management (IPM) and other entomological studies. The light spectrum of the LEDS was tuned to optimize insect attraction and lower energy consumption. An electronic circuit with control software was integrated with the lamp, enabling it to operate in standalone mode, automatically identify night and day, monitor and control the battery charge with energy from a photovoltaic solar panel, protect the battery against over-discharge, and provide feedback about the operating status of the system. Additionally, energy consumption is about five times ower than that of the fluorescent lamp, reducing the battery and solar panel size needed for its energy supply. In the 2017/2018 growing season, the smart LED lamp was installed in a Sonne light trap in an irrigated rice field, and the total number of insects captured was compared with the number collected in a conventional light trap fitted with a traditional 15 W black light fluorescent lamp. Total captures in the Sonne trap were approximately three times greater than in the conventional system. Key words: light trap, fauna survey, light source, photovoltaic, electronic control Objetivou-se neste estudo apresentar o projeto e os resultados de testes em campo de uma lampada de LEDs (light emitting diodes) para aplicacao em manejo integrado de pragas (MIP) e outros estudos entomologicos. O espectro de luz dos LEDs foi otimizado para aumentar a atratividade de insetos da lampada e reduzir o consumo de energia. Um circuito eletronico e um software de controle foram integrados a lampada, fazendo-a funcionar de modo autonomo, identificando noite e dia automaticamente, monitorando e controlando a carga da bateria com energia proveniente de um painel solar fotovoltaico, protegendo a bateria contra descarga profunda e apresentando ao usuario informacoes sobre o estado de funcionamento do sistema. Alem disso, seu consumo de energia e cinco vezes menor, reduzindo o tamanho da bateria e do painel solar necessario para alimentar a lampada. Na safra de arroz irrigado de 2017/2018, a lampada