Low-power multi-sensor system with task scheduling and autonomous standby mode transition control for IoT applications

Abstract

The low-power multi-sensor system with task scheduling and autonomous standby mode transition control for IoT applications are proposed, which achieves almost zero standby power at the no-operation modes. A power management scheme with activity localization can reduce the number of transitions between power-on and power-off modes with re-scheduling and bundling task procedures. And autonomously standby mode transition control selects the optimum standby mode of microcontrollers, reducing total power consumption. We demonstrate with evaluation board as a use case of IoT applications, observing 91% power reductions by adopting task scheduling and autonomously standby mode transition control combination.