Visual prosthesis wireless energy transfer efficiency optimization and modeling

Since the wireless energy transfer technology has wide range of applications, it is concerned by the extensive domestic and external scholars. This paper conducts the theoretical analysis on the influence of the different resonant coupling circuit structures to the energy transfer efficiency, based on taking full account of the factors such as biological tissue, parasitic capacitance, the coil high-frequency equivalent resistance, signal source resistance and so on. On this basis, in order to solve the problem of the energy transfer efficiency variation with different visual prosthesis load, the matching network method used in the high-frequency circuit is introduced to the visual prosthesis wireless energy transfer system, through the matching network the equivalent impedance optimization under the condition of any load and any energy transfer carrier frequency could be achieved, accordingly the visual prosthesis wireless energy transfer efficiency optimization and modeling could be conducted. Finally, the correctness of the design ideas and the feasibility of the wireless visual prosthesis wireless energy transfer efficiency maximization are verified by the simulation and experimental results. The Optimization and Modeling has high clinical guiding significance. 1553-9105/Copyright © 2014 Binary Information Press