摘要
设计并实现了一种基于标签法的LED(发光二极管)室内可见光定位系统。在满足基本照明需求的同时,将当前的位置信息循环加载到LED光源上,通过无线光链路传输到移动终端,系统根据移动终端接收到的信息解析出其在环境中的相对位置,还可将位置映射到地图上并映射出与当前位置相关的提示指令,最终实现可见光定位。利用Stm32处理器作为系统主控制器,设计了一种适用于可见光定位的编码协议,以灵活可靠地传输位置信息。发射端测试了LED光源特性及驱动电路,可保证基本的照明与通信;接收端利用C#语言设计上位机软件以实现移动终端在地图上的映射及实时更新功能;结果表明,该系统定位效果理想。
This paper designs and realizes an indoor visible light localization system based on identification method. The system first loads the current position information to the LED light sources. Then the information will be transmitted to the mobile terminal through the wireless optical link, which calculate their relative positions in the environment according to the received information from the mobile terminal, and mapped to the map. Therefore, the system can achieve visible light positioning function, which meets the basic requirements of the lighting at the same time. We use the Stm32 processor as the main con- troller of the system, and design a kind of coding protocol, which can be used to transmit the position information in the visible light communication process. The characteristics and driving circuits of LED light sources are tested at the transmitter, which can guarantee the basic lighting and communication. The receiver uses Cgt language to compile the software of the host com- puter in order to realize the function of mapping and real-time updating of the mobile terminal＇s position. The results show that the system can achieve ideal positioning performance.
出处
《光通信研究》
北大核心
2016年第6期63-67,共5页
Study on Optical Communications
基金
辽宁省研究生教育创新计划资助项目(辽教发[2014]154)
辽宁省普通高等教育本科教学改革立项资助项目(UPRP20140139)
辽宁省教育厅科学技术研究资助项目(L2013213)
大连市科技计划资助项目(2014A11GX050
2014A11GX052)
关键词
可见光通信
室内定位
标签法
位置信息
Stm32处理器
visible light communication
indoor positioning
identification method
position information
Stm32 processor
