Desenvolvimento de um protótipo de luminária de emergência com tecnologia LED

Abstract

This work presents the design and implementation of a 5W non-permanent emergency luminaire prototype using LEDs. A review of LEDs was carried out, discussing their physical and electrical characteristics and presenting some basic concepts about lighting technician. The use of the LEDs in the emergency lighting was discussed and a revision of the norm NBR 10898/1999 was made to know about the minimum requirements required for the application of emergency lighting. The blocks that make up a luminaire and its objectives was presented, as well as the drive circuits for LEDs and a brief review on non-isolated basic converters. The boost converter modeling was performed demonstrating the equations that result in the values of the components used for implementation. The other blocks, such as the battery charger and the power sensor, was designed and implemented. Finally, a comparison was made between the prototype and a commercial luminaire assessing its respective luminous fluxes, the autonomy of the battery of the prototype and the loss of luminosity of the prototype in the minimum period of autonomy required by norm, in order to validate the executed project.