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Conference Paper
Fabrication and Characteristics Analysis of Piezoelectric Energy Scavenger based on Piezoelectric Single Crystal for Self-Powered Sensor Node
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- Authors
- S. E. Moon, N-J. Choi, W. S. Yang, J. K. Kwon
- Issue Date
- 2013-09
- Citation
- International Conference on Surfaces, Coatings and Nanostructured Materials (NanoSMat) 2013, pp.67-67
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, we present the results and analysis of the vibration energy harvesting performances based on PMN-PT piezoelectric single crystal beam. A novel piezoelectric beam cantilever structure is used to scavenge energy from the abandoned environmental vibration energy. The piezoelectric energy scavenger having capability of about 3 mW based on piezoelectric single crystal, which operates at a vibration frequency of 60 Hz, was designed by calculation and simulation by using the earlier reported works1,2 and commercial finite element method (FEM) software and measured mechanical damping ratio and electro-mechanical coupling coefficient of the device. The fabricated device, based on a bimorph cantilever structure with a proof mass, showed that a few tens of AC open voltages and about 2 mW power maximum were achieved at 0.1 grms vibration. The charging energy characteristics into secondary batter were measured with commercial power control board and the prototype of the selfpowered sensor node was fabricated.
- KSP Keywords
- 60 Hz, Bimorph cantilever, Cantilever structure, Characteristics analysis, Charging energy, Damping ratio, Electro-mechanical coupling coefficient, Energy characteristics, Energy scavenger, Environmental vibration, Finite Element(FE)