基于谐波通讯的无线电能与反向信号同步传输技术OA北大核心CSTPCD

This paper proposes a simultaneous wireless power and reverse signal transmission(SWPRST)technology based on harmonic communication to address the issues of existing SWPRST systems,which typically face issues such as high reactive power,susceptibility of load voltage to signal transmission,or the necessity of incorporating additional high-frequency signal sources.The proposed method realizes reliable SWPRST without requiring an external high-frequency signal transmission circuit.First,the structure of the proposed SWPRST system based on harmonic communication is presented,and its working mode and basic principle are analyzed.Next,the equivalent mathematical model of the system is established.The mutual interference between the signal and the power transmission is analyzed.Then,the modulation and demodulation circuit of the signal are designed,and the influence of the signal detection channel parameters on the signal transmission rate is analyzed.Finally,an experimental platform is built to verify the theoretical analysis.The experimental results show that proposed method effectively achieves SWPRST,and the signal has an error free transmission rate of up to 5 kbps.At the same time,the system has the advantages of low reactive power and almost no fluctuation in output load voltage(voltage fluctuation rate of 0.33%).This method uses harmonics as the signal carrier,having great significance on the design and study of SWPRST in multi-frequency utilization,and has good theoretical significance and practical engineering application value.