基于生物电容的视觉假体无线能量传输系统建模及效率优化

Visual Prosthesis Wireless Power Transfer System Modeling Based on Biological Capacitance and Its Efficiency-Optimization

为了解决视觉假体无线能量传输系统设计过程中参数选取的问题,本文进行了基于生物电容的视觉假体无线能量传输系统精确建模,并在该模型的基础上对次级线圈回路进行了优化,使能量传输效率较传统谐振耦合方法有明显提高.文中采用大、小两组线圈进行比较分析和验证,所得实验数据和建模仿真数据吻合度高,验证了所建模型的准确性及优化方案的可行性,为视觉假体临床应用线圈的选取和无线能量传输系统的设计提供了理论参考.

To solve the parameter selection problem in the design of visual prosthesis w ireless pow er transfer system,this paper precisely models visual prosthesis w ireless pow er transfer system on the basis of biological capacitance. Based on this model,the secondary coil circuit of the w ireless pow er transfer system is optimized,w ith w hich the energy transfer efficiency is improved obviously compared to the traditional resonant coupling method. Experimental measurement data from the comparison and analysis betw een two different-sized coils highly match the simulation data in the modeling,and it verifies the correctness of the modeling and the feasibility of the optimization scheme,providing theoretical reference to the coil option of visual prosthesis clinical application and the design of wireless energy transfer system.