| Compared to traditional power transmission, wireless power transmission technology has many advantages, such as avoiding wire wear, aging, ensure the safety of power supply;applied to electronic products greatly reduce its waste battery pollution to the environment. The electromagnetic coupling resonance wireless transmission technology is the most promising, with a moderate transmission distance, high transmission efficiency, less harmful to environment and human body, attracting a large number of scientific research personnel.At present, this technology has some certain research results, but most in the theory research and the basic experimental stage, has not yet seen the specific application of products. This topic selects wireless mouse as an object, studies the electromagnetic coupling resonance wireless transmission technology, including the system transmission characteristics analysis, hardware design, verifies the feasibility of this technology used in wireless mouse, for the specific application of this technology provide certain basis.Firstly, this paper introduces three kinds of wireless transmission technology, expounds the research status at home and abroad of electromagnetic coupling resonant wireless power transmission. Establishes system analysis model based on coupled mode theory and circuit theory, obtains the system output power, transmission efficiency expression, By Matlab and Pspice software detailed analyses resonant frequency, load resistance, coupling coefficient, loop impedance how to affect the system transmission characteristics, which provides the theoretical foundation for the overall system design.Secondly, completes the hardware design of this system, including:class E inverter module design, resonant coil design, rectifier voltage regulator module design. Based on Pspice software analyses the overall system, verifies the correctness of design.Finally, on the basis of the system hardware design, verifies the transmission characteristics of this system, the experimental results agree with the theoretical analysis, verifies the feasibility of electromagnetic coupling resonance wireless transmission used in wireless mouse, at the resonant frequency of1.5MHz and the coil diameter of10cm, transmission distance up to30cm, can realize the transmission distance three times to the coil diameter, verifies the electromagnetic coupling resonant wireless transmission mouse has a great degree can be achieved. |
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