基于VLC的无线导览系统的设计和实现  

Design and implementation of wireless navigation system based on visible light communication technology

作　　者：徐子轩[1] 梁海莲[1] 钟镇[2] 何磊[2] 顾晓峰[1] 

机构地区：[1]江南大学电子工程系轻工过程先进控制教育部重点实验室,江苏无锡214122 [2]中国科学院苏州纳米技术与纳米仿生研究所,江苏苏州215123

出　　处：《光通信技术》2012年第3期56-59,共4页Optical Communication Technology

基　　金：中央高校基本科研业务费专项资金项目(JUSRP20914,JUD-CF10031)资助;轻工过程先进控制教育部重点实验室开放课题资助项目(APCLI1001)资助

摘　　要：提出了一种基于可见光通信技术的新型无线导览系统。在需要安装导览系统的地方对LED照明系统进行合适的改造,使LED发射带有识别码的可见光。当带有光电二极管的终端进入光照范围时,直接接受识别码,并经过跨阻放大器、滤波电路、电平判决器等电路处理后生成数字信号发送给后级微处理器,再通过解码、识别码比对等处理实现目标定位和无线导览的功能。利用FPGA开发套件及可见光发射机、接收机搭建了一个采用Manchester编解码和OOK调制方式的最简无线导览系统,并通过测试验证了系统的可行性。A novel wireless navigation system based on the visible light communication technology has been proposed.After appropriate modification of the light emitting diode（LED） illumination system at the place where the navigation system is installed,LEDs can emit visible light with the identification information.When the terminal equipped with the photodiode detector enters the illuminated area,the received identification information is converted by transimpedance amplifier,filter and level judgment circuits to digital signals,which are sent to the microprocessor.The positioning and wireless navigation functions can then be realized after decoding and comparing the identification information.A simplest wireless navigation system based on the Manchester encoding and decoding and the OOK modulation is built by using FPGA development kits,visible light transmitter and receiver.The feasibility of the demonstration system is verified by testing results.

关 键 词：可见光通信 室内无线导览系统 发光二极管 

分 类 号：TN929.1[电子电信—通信与信息系统]