传感技术学报2017，Vol.30Issue(6)：855-860,6.DOI:10.3969/j.issn.1004-1699.2017.06.009
采煤机无线监测装置压电换能元件参数匹配分析
Analysis of Parameter Matching of Piezoelectric Transducer in Shearer Wireless Monitoring Device
摘要
Abstract
The geometric parameters of the piezoelectric vibrator in the piezoelectric self powered device directly affect the resonance frequency,which affects the power generation of the piezoelectric self powered device. Therefore,it is necessary to set the optimal parameters of the piezoelectric vibrator according to the ambient excitation frequency. The wireless monitoring device of shearer based on piezoelectric self power supply is studied. Based on theoretical analy-sis,simulation and experimental methods,the generation of different cantilever beams under different external excita-tions is studied. The results show that the larger the mass and the length of cantilever beam,the lower the natural fre-quency of cantilever beam;With the increase of the thickness of the cantilever beam,the natural frequency of the can-tilever piezoelectric structure increases gradually. The best matching piezoelectric structure geometry parameters are selected for different monitoring positions of shearer,and the feasibility of the piezoelectric self powered wireless moni-toring device is verified by the monitoring of the working condition of the shearer.关键词
采煤机/无线监测装置/压电自供电/悬臂梁/压电发电Key words
coal mining machine/wireless monitoring device/self powered piezoelectric/cantilever beam/piezoelec-tric power generation分类
信息技术与安全科学引用本文复制引用
彭继慎,何武林..采煤机无线监测装置压电换能元件参数匹配分析[J].传感技术学报,2017,30(6):855-860,6.基金项目
辽宁省教育厅创新团队项目( LTJ2011101,LT20100047) （ LTJ2011101,LT20100047）
