面向光信息与能量同步传输的接收电路研究  

Study on a Receiver Circuit for Simultaneous Lightwave Information and Power Transfer

作　　者：涂俊轩 樊庭冰 倪慧琳 庄济舟 曹国洋 吴绍龙[1,2,3,4] 李孝峰 TU Junxuan;FAN Tingbing;NI Huilin;ZHUANG Jizhou;CAO Guoyang;WU Shaolong;LI Xiaofeng(School of Optoelectronic Science and Engineering,Soochow University,Suzhou 215006,China;Collaborative Innovation Center of Suzhou Nano Science and Technology,Soochow University,Suzhou 215006,China;Key Lab of Modern Optical Technologies of Education Ministry of China,Soochow University,Suzhou 215006,China;Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province,Soochow University,Suzhou 215006,China)

机构地区：[1]苏州大学光电科学与工程学院,江苏苏州215006 [2]苏州大学苏州纳米科技协同创新中心,江苏苏州215006 [3]苏州大学教育部现代光学技术重点实验室,江苏苏州215006 [4]苏州大学江苏省先进光学制造技术重点实验室,江苏苏州215006

出　　处：《光通信研究》2025年第2期20-25,共6页Study on Optical Communications

基　　金：国家自然科学基金资助项目(62075146,62120106001);江苏省自然科学基金资助项目(BK20231311)。

摘　　要：【目的】在光信息与能量同步传输(SLIPT)系统中,能量采集(EH)与信息传输(IT)两种功能相互制约,为了使SLIPT系统更高效地工作,需要对两者进行调控。【方法】文章首先测试了目前SLIPT系统中常用的接收电路,并依据测试结果对接收电路进行了优化。文章所设计的接收电路由解耦合电路、EH电路和信号处理电路3个电路组成,其中,解耦合电路由能量采集支路(EHB)、电流调控支路(CRB)和信息传输支路(ITB)3条支路组成,用于分离和调控光/电转换器件输出电流;EH电路由升压、能量管理和稳压电路组成,用于能量的采集管理和输出;信号处理电路由两级低通同相放大和阈值比较电路组成,用于信号的滤波放大和整形。然后,将接收电路应用于以发光二极管(LED)和光伏电池(PV)为光/电转换器件及以单片机为处理器的SLIPT系统中,文章归纳了EH和IT两个功能之间的制约关系和调控方式。【结果】测试结果表明,基于文章设计的电路,SLIPT系统能在EH、IT和信息与能量同时传输模式之间切换,通过调节接收电路的参数能够调控PV输出电流分配,从而调控输入到EHB的功率和ITB的信干比(SIR),进而实现能量的高效采集和信息的稳定传输,对应的能量存储功率和通信速率可由解耦合电路均衡与调控。【结论】接收电路能在无外加电源的情况下工作,同时具备最大功率点追踪、低功耗和工作模式可调等特点。【Objective】The two functions of Energy Harvesting(EH)and Information Transmission(IT)are mutually restricted in the Simultaneous Lightwave Information and Power Transfer(SLIPT)system.In order to make the SLIPT system work more efficiently,it is necessary to regulate these two functions.【Methods】The article firstly tests the commonly used receiver circuit in SLIPT system to optimize the receiver.The receiver circuit designed in this article consists of three circuits:decoupling,energy harvesting and signal processing.The decoupling circuit consists of three branches,including Energy Harvesting Branch(EHB),Current Regulation Branch(CRB)and Information Transmission Branch(ITB),which is used to separate and regulate the output current of the optoelectronic converter.The EH circuit consists of three parts:boost circuit,energy management circuit and voltage stabilizing circuit,which is used for EH management and output.The signal processing circuit consists of a two-stage low-pass filtered non-inverting amplifier circuit and a threshold comparison circuit,which is used for signal filtering,amplifying and shaping.Finally,the receiving circuit is applied in a SLIPT system that uses Light-Emitting Diodes(LEDs)and Photovoltaic cells(PV)as optical/electrical conversion devices,and a microcontroller as the processor.The constraints and control methods between the two functions of EH and IT are summarized.【Results】Experiment results show that the SLIPT system based on the as-designed circuit can be controlled to work in the EH mode,IT mode,or information-energy simultaneous transmission mode.By adjusting the parameters of the receiving circuit,the PV output current distribution can be regulated,thereby controlling the power input to the EHB and the Signal-to-Interference Ratio(SIR)of the ITB.This enables efficient energy harvesting and stable information transmission.The corresponding energy storage power and communication rate can be balanced and regulated by the decoupling circuit.【Conclusion】The receiving c

关 键 词：光信息与能量同步传输 光伏电池 能量采集 信息传输 电路设计 

分 类 号：O436[机械工程—光学工程]