Demo: Nano Power Draw in Duty-Cycled Wireless Sensor Networks

In this work we present a novel power management architecture for Wireless Sensor Network devices towards minimizing the power consumption when nodes remain in sleep state. Specifically, we propose the employment of an on-board timer circuit that consumes only few nano Amperes, along with a power switch that controls the power rail of the under consideration node. According to our principle, the node remains solely disconnected from power when in sleep state in an effort to minimize the quiescent draw, while the timer is responsible for reinforcing the node back in active mode when required. Our implementation achieves the minimization of power draw in sleep state down to 33 nA, while it can easily be integrated with any IoT platform.