Ambient energy harvester design for a wireless sensor network
solar cells, Structural health monitoring, super capacitors, wireless sensor network
IEEE International Conference on Electro Information Technology
The self-powered wireless sensor network (WSN) is an appealing approach for structural health monitoring applications. We present a solar energy harvesting hardware to store energy in supercapacitors that supply power to the wireless sensor nodes in a WSN based bridge monitoring system. A control circuit with the ultra-low power consumption components is designed to prevent further energy loss when the voltage dropped below a given cutoff voltage and to make sure the super capacitor charging circuit works close to the maximum power point of a solar panel and to the operating voltage of wireless sensor node. Design goals of the energy harvesting and storage circuit include low-cost, low-power consumption, and a simple design. The performance of the proposed circuit has been evaluated on the basis of the simulation and data logging through the deployed self-powered system prototype on the bridge. Results show that the designed harvesting hardware can achieve self-sustainability during the fluctuating light conditions and able to swift back to operation above cutoff voltage.
Original Publication Date
DOI of published version
Joshi, Ranjana and Zhu, Jin, "Ambient energy harvester design for a wireless sensor network" (2015). Faculty Publications. 1239.