Uma abordagem para redução de consumo de energia em nós sensores de redes de sensores sem fio: análise de caso do MICA2

Abstract

This dissertation presents a hardware solution to an effective reduction of power consumption in wireless sensor networks. Among the possible alternatives to reduce the power consumption the radio communication channel presented the best opportunity. A new solution that integrates the transmitted signal power control with the received information quality is presented in a dynamic mechanism. Several models were tested used to estimate battery residual capacity. The MICA2 wireless sensor platform was used in the experiments. Experiments show that the voltage-only based estimation is quite imprecise, and a new estimation technique is presented with minimal hardware intervention.