交通系统中LED光通信技术研究  

Research on LED optical communication technology in traffic system

作　　者：段颖妮[1] 韩佐军[1] 

机构地区：[1]西安文理学院物理与机械电子工程学院,西安710065

出　　处：《光通信技术》2015年第2期56-59,共4页Optical Communication Technology

基　　金：国家自然科学基金项目(61071001)资助;陕西省科技厅工业攻关计划项目(2013k07-47)资助;西安市科技局科技计划项目(CX12189 WL13)资助

摘　　要：针对智能交通中通过实现车辆个别指挥缓解交通拥堵目标,十字路口交通灯在信号指示同时和移动车体间采用LED光通信发布指挥命令和服务信息提高路网通行效率。该通信系统发射端采用2FSK高速调制光载波传输信息实现恒定光功率输出避免通信时交通灯亮度不均。接收端通过锁相环解调还原信息。Aiming at the target of reducing traffic congestion by realizing vehicle individual command, in this paper, that traffic lights at a crossroads publish the command and service information to mobile vehicle by using LED optical communication and at the same time realize the traffic signal indicating to improve the efficiency of traffic network is presented. The transmitting terminal of the communication system can transmit information by taking 2FSK high-speed modulating optical carrier to achieve the constant light power output, in order to avoid the communication traffic lights uneven brightness. Receiver restores information through the PLL demodulation.

关 键 词：智能交通 LED光通信 2FSK高速调制 锁相环解调 

分 类 号：E271.7[军事—军事理论]