基于可见光通信的零能耗光标签  

Zero power light labeling based on visible light communication

作　　者：马天洋 陈雄斌[1,3] 徐义武 MA Tianyang;CHEN Xiongbin;XU Yiwu(Key Laboratory of Opto-Electronic Materials and Devices,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 101408,China)

机构地区：[1]中国科学院半导体研究所光电子材料与器件重点实验室,北京100083 [2]中国科学院大学材料科学与光电技术学院,北京100049 [3]中国科学院大学电子电气与通信工程学院,北京101408

出　　处：《电信科学》2023年第5期20-27,共8页Telecommunications Science

基　　金：国家自然科学基金资助项目(No.61875183)。

摘　　要：为了实现可见光标签的零能耗,利用MATLAB、MULTISIM对接收机的阻抗匹配进行了仿真,使一阶均衡电路的输入阻抗与太阳能电池面板内阻相匹配,在拓展系统带宽的同时保证太阳能电池面板输出功率达到最高。仿真结果表明,均衡电路输入阻抗与太阳能电池面板内阻匹配时,相比常见的50Ω不匹配状态,输出功率提高了86.2%。搭建了可见光零能耗光标签原型系统,使用15 W的发光二极管(light emitting diode,LED)灯以115200 Baud发送字符,1.3 m远处的碲化镉太阳能电池面板收集能量并接收信号,低功耗单片机通过模数转换(analog-to-digital converter,ADC)计算进行数据恢复后,使用有机发光二极管(organic light-emitting diode,OLED)屏幕显示接收到的标签字符。接收机的信号接收、处理计算与屏幕显示的能量均由太阳能电池面板提供,不需要电池或外接电源供电,实现了零能耗的可见光标签显示业务。In order to achieve zero energy consumption of visible light labels,MATLAB and MULTISIM were used to simulate the impedance matching of the receiver,matching the input impedance of the first-order equalization circuit with the internal resistance of solar panel,while expanding the system bandwidth and ensuring the highest output power of the solar panel.The simulation results show that the output power of the solar panel is increased by 86.2%when the input impedance of the equalization circuit matches solar panel,compared to the common 50Ω.The prototype system of zero-energy optical label of visible light was built.A 15 W LED lamp was used to send characters at 115200 Baud,and a cadmium telluride solar panel was used to collect energy and receive signals at a distance of 1.3 m.Low-power microcontroller was used to recover data through ADC and computation,and OLED screens were used to display the received label characters.The signal reception,processing computing,and screen display energy of the receiver were all provided by solar panel,without the need for batteries or external power supply.The visible light label display service with zero energy consumption has been implemented.

关 键 词：物联网 零能耗 可见光通信 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]