A Self-Powered Engine Health Monitoring System Based on L-Shaped Wideband Piezoelectric Energy Harvester
| Autor: | Chongyu Shi, Shuxin Shi, Xin Luo, Zhang Zuwei, Shan Lu, Jun Yuan, Jielin Zhou, Hua Yu, Zhang Xiaokun, Qiuqin Yue |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Automotive engine
Power management Cantilever Computer science lcsh:Mechanical engineering and machinery wireless sensors nodes 02 engineering and technology 01 natural sciences Article lcsh:TJ1-1570 Electrical and Electronic Engineering Wideband business.industry Mechanical Engineering 010401 analytical chemistry Energy conversion efficiency Electrical engineering 021001 nanoscience & nanotechnology L-shaped wideband vibration energy harvester Piezoelectricity 0104 chemical sciences Power (physics) Vibration Control and Systems Engineering engine health monitoring power management 0210 nano-technology business |
| Zdroj: | Micromachines Volume 9 Issue 12 Micromachines, Vol 9, Iss 12, p 629 (2018) |
| ISSN: | 2072-666X |
| Popis: | Engine health monitoring is very important to maintain the life of engines, and the power supply to sensor nodes is a key issue that needs to be solved. The piezoelectric vibration energy harvester has attracted much attention due to its obvious advantages in configuration, electromechanical conversion efficiency, and output power. However, the narrow bandwidth has restricted its practical application. A self-powered engine health monitoring system was proposed in this paper, and an L-shaped wideband piezoelectric energy harvester was designed and implemented. The L-shaped beam-mass structure and the piezoelectric bimorph cantilever beam structure was combined to form the wideband piezoelectric energy harvester configuration, which realized effective output at both resonance points. The theoretical model and finite element simulation analysis of the wideband piezoelectric energy harvester were proposed and the parameters were optimized based on that to meet the requirement of the vibration frequency of the engine. The experimental results show that the proposed energy harvester can be applied into the automobile engine health monitoring system. Engine signal analysis results also demonstrate that the proposed system can be used for engine health monitoring. |
| Databáze: | OpenAIRE |
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