무선계측센서 구동을 위한 병렬 연결된 압전 에너지 하비스터

Abstract

As most infrastructure have low natural frequency for vibration, an energy harvester to operate wireless sensors for them should be aimed to low frequency and have high output efficiency. This study proposes the energy harvester with parallel-connected single crystal ceramic for low frequency in order to gain enhanced efficiency. The performance is confirmed by the experiment using the acceleration data of hangers in Yeongjong Bridge.