基于磁耦合谐振式海下无线电能与信息共享耦合线圈分时传输方法

Time-sharing Transmission Method of Undersea Wireless Power and Information Shared Coupling Coil Based on Magnetic Coupling Resonance

磁耦合谐振式无线电能传输和电场感应式无线电能传输是当前研究热点。能量传输往往伴随着信息传输,所以海下无线信息的传输也逐渐受到重视并发展。为此提出一种具有共享通道的无线电能与信息传输系统,使功率和信息可以在同一信道进行传输。在一个开关周期中,电能在前半个开关周期传输,数据在后半个开关周期传送。数据通过频移键控FSK(frequency-shift keying)调制方法进行调制,功率传输的频率设置为285.02 kHz。采用二进制频移键控2FSK(binary frequency-shift keying)调制方法,2个信号载波的频率分别设置为1 MHz和2 MHz。水槽实验平台采用35%盐水模拟海水环境。仿真和实验结果很好地验证了理论分析和计算,证实了电能和信息共享通道进行无线传输的系统对海下电气设备进行供电和数据传输的可行性。

At present,inductive wireless power transfer and capacitive wireless power transfer are becoming research hotspots.Since the power transmission is usually accompanied by information transmission,the undersea wireless information transmission gradually attracts attention and is able to develop further.A wireless power and information transmission system with shared channel is proposed,which allows power and information to be transferred through the same signal channel.In one switching cycle,power and data are transmitted in the first and second half of cycle,respectively.Data is modulated using the frequency-shift keying(FSK)method.The frequency for power delivery is set as 285.02 kHz.Using the binary frequency-shift keying(2FSK)modulation method,the frequencies of two signal carriers are set as 1 and 2 MHz,respectively.A water tank experimental platform was built with 35%salt water to simulate sea water,and simulation and experimental results verified the theoretical analysis and calculation well,indicating the feasibility of the wireless power and information transmission system with shared channel in supplying power and transmitting data for undersea electrical equipment.