A battery operated normally-off computing technique for energy efficient sensor node applications

A Normally Off (Noff) Computing technique to get the higher energy efficiency and low power dissipation are remarkable technique for the both high performance computing and and the embedded computing. The Noff computing with DC power supply has been studied but there are no research about the Noff computing with battery operation for sensor network applications. This paper described the optimization of the battery operated Noff computing sensor node application. The battery life time characterization affected by the various current flow operation modes which had been reported. We analyze the theory of the battery life time and provide the battery life time estimation tool based on the theory and measured data of chemical battery. By combining the above tool and the Noff computing controlling method, we can get the optimized energy efficient managements for sensor node application.