光学精密工程2012，Vol.20Issue(8)：1854-1861,8.DOI:10.3788/OPE.20122008.1854
全彩发光二极管交通诱导屏光纤传输系统
Full-color LED display of traffic guidance fiber transmission system
摘要
Abstract
An optical fiber transmission system was designed to implement the long-distance and realtime transmission of traffic guidance image data. To overcome the defects of traditional optical terminal machines,a complete system architecture was built according to the needs of the transmission system. The design ideas of a physical layer and a data link layer were analyzed based on Ethernet relative protocol, some design principles of the important modules were also given,then the memory addressing and bandwidth estimation were calculated in details. The test results show that the image data with a maximum resolution of 1 024 pixelX 768 pixel, and refresh rate of 60 Hz can be transferred in a single optical fiber in real-time with a maximum transmission rate of 1. 5 Gbps and the distance of 5 ?10 km. Compared to the original system,the proposed system reduces additional optical equipment and the fiber utilization rate is increased by 80%. Moreover,the cascade function of the receiver end has reduced the laying costs. With reliable performance, the system can implement the transmissiontask of real-time image data from a traffic command center to the guidance LED display in most of the cities.关键词
光纤通信/LED诱导屏/图像传输/现场可编程门阵列Key words
optical fiber communication/ LED guidance display/ image transmission/ Field Programming Gate Array(FPGA)分类
信息技术与安全科学引用本文复制引用
李爽,王瑞光,严飞..全彩发光二极管交通诱导屏光纤传输系统[J].光学精密工程,2012,20(8):1854-1861,8.基金项目
国家科技支撑计划资助项目(No.2009BAE73B01) （No.2009BAE73B01）
