摘要
通过对超声无线输能系统的声电转换通道进行理论分析,利用电声传输线类比法构建了声电转换通道的一维仿真模型,并利用有限元仿真软件进一步构建了声电转换通道的有限元仿真模型,提高了模型的精确度和适用范围。进行了超声无线输能的实验,并将仿真结果与实验测量结果进行对比,仿真模型的有效性得到验证。利用所建仿真模型分析了负载阻抗对系统能量传输效率的影响规律,对声电转换通道进行了优化,确定了系统的共振频率和最佳负载阻抗。在以上研究基础上建立的超声无线输能实验系统,能够成功透过8 mm厚的铜板点亮20 W灯泡,能量传输效率达到57%,实验证明了利用超声透过金属板进行能量无线传输是切实可行的。
Through the theoretical analysis of the acoustic-electrical conversion channel of the ultrasonic wireless power transmission,one-dimensional simulation models were constructed using the electro-acoustic transmission line analogy method.To improve the accuracy and scope of application of the simulation,a finite element simulation model of the acoustic-electrical conversion channel was constructed using the finite element simulation software as well.Comparing the simulation results with the experimental results,the validity of the method was verified,and the influence of the load impedance on the energy transmission efficiency of the system was analyzed to optimize the acoustic-electric conversion channel.Based on this,an ultrasonic wireless energy transmission experiment system was designed.Ultrasound was successfully used to light 20 W bulbs through 8 mm thick copper plates,and the energy transmission efficiency reached 57%,which proved that it is feasible to transport electric energy through a metal wall by acoustic waves.
作者
王俊
张敏
张碧星
黄娟
阎守国
WANG Jun;ZHANG Min;ZHANG Bixing;HUANG Juan;YAN Shouguo(State Key Laboratory of Acoustics,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190;University of Chinese Academy of Sciences,Beijing 100049)
出处
《声学学报》
EI
CSCD
北大核心
2020年第1期117-123,共7页
Acta Acustica
基金
国家自然科学基金项目(11574343,11474308,11774377)资助.
