Abstract
This thesis describes EcoMicro, a miniature, wireless sensor node with energy harvesting ca- pability. It is capable of measuring motion using a 9-DoF (degree-of-freedom) inertial sensor and communication over Bluetooth Low Energy (BLE) protocol. It is self-powered by a solar cell using a maximum power point tracker (MPPT) and a rechargeable energy storage suited for energy har- vesting. The system also includes a real-time clock (RTC) for not only tracking time but also for power management. Experimental results show that EcoMicro to operate correctly and efficiently for a class of wireless sensing applications where the previous system failed to apply due to size or power constraints.