3FSK能量调制式无线功率与信息同步传输技术  

3FSK Energy Modulated Simultaneous Wireless Power and Information Transfer Technology

作　　者：宋纯 柴琳[1] 陆江华 马伯乐 SONG Chun;CHAI Lin;LU Jianghua;MA Bole(School of Information Science and Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学信息科学与工程学院,武汉430081

出　　处：《电源学报》2023年第6期66-73,共8页Journal of Power Supply

基　　金：湖北省教育厅科学研究计划青年项目(Q20211101)。

摘　　要：针对无线功率与信息同步传输SWPIT(simultaneous wireless power and information transfer)技术中出现的共享通道传输可用谐振频率少,无法保证载波传输效率的问题,提出了一种基于双LCC电路实现3FSK调制的三频谐振的SWPIT技术。相较于传统的2FSK调制电路,所提电路优势在于:采用三谐振频带,系统载波均使用谐振频率,避免了对系统谐振频率的利用率低、传输效率低等缺陷;使系统在3种频率下正常工作,可实现全双工,提高了工作效率。所做的工作包括:低阶及高阶电路谐振腔的谐振条件分析;参数设计及频率选择;解调信号。同时,通过Simulink仿真及实验样机搭建了150、177和48 kHz的实验平台,验证了所提3FSK能量调制式技术的可行性。实验样机显示,在3种频率下,接收侧输出电压稳定且幅值为直流输入电压的4/π倍,达到恒电压输出的目标。Aimed at the problem of limited available resonant frequencies in shared channel transmission and inability to ensure the carrier transmission efficiency in the simultaneous wireless power and information transfer(SWPIT)technology,a three-frequency resonant SWPIT technology based on double-LCC circuit is proposed to achieve 3FSK modulation.Compared with the traditional 2FSK modulation circuit,the proposed circuit has the following advantages.First,three-frequency resonant frequency bands are adopted and all the system carriers use resonant frequencies,which avoids the defects such as a low utilization rate of system resonant frequency and a low transmission efficiency.Second,the system is enabled to operate normally at three frequencies,thus achieving full duplex and improving the working efficiency.The work includes an analysis of resonant conditions for low-and high-order circuit resonators,parameter design and frequency selection,and demodulation of signals.In addition,150 kHz,177 kHz and 48 kHz experimental platforms were built by Simulink simulation and an experimental prototype,thereby verifying the feasibility of the proposed 3FSK energy modulated technology.The experimental prototype showed that at three frequencies,the output voltage on the receiving side was stable and its amplitude was 4/πtimes that of DC input voltage,achieving the goal of constant-voltage output.

关 键 词：无线功率与信息同步传输 LCC 3FSK 谐振 

分 类 号：TM724[电气工程—电力系统及自动化] TN92[电子电信—通信与信息系统]