Full-color LED display of traffic guidance fiber transmission system

LI Shuang; WANG Rui-guang; YAN Fei

doi:10.3788/OPE.20122008.1854

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Full-color LED display of traffic guidance fiber transmission system

更新时间：2020-08-12

- Full-color LED display of traffic guidance fiber transmission system
- Optics and Precision Engineering Vol. 20, Issue 8, Pages: 1854-1861(2012)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20122008.1854
  CLC： TN312.8;TN919.8
- Received：27 January 2012，
  
  Revised：01 March 2012，
  
  Published：10 August 2012
- 稿件说明：
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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,(8): 1854-1861

LI Shuang, WANG Rui-guang, YAN Fei. Full-color LED display of traffic guidance fiber transmission system[J]. Editorial Office of Optics and Precision Engineering, 2012,(8): 1854-1861
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,(8): 1854-1861 DOI： 10.3788/OPE.20122008.1854.

LI Shuang, WANG Rui-guang, YAN Fei. Full-color LED display of traffic guidance fiber transmission system[J]. Editorial Office of Optics and Precision Engineering, 2012,(8): 1854-1861 DOI： 10.3788/OPE.20122008.1854.

摘要

设计了光纤传输系统以实现交通诱导屏图像数据的远距离实时传输。针对原光端机的诸多缺点

提出了传输系统的设计方案

构建了完整的系统结构。依据以太网相关传输协议对物理层和数据链路层的设计思想进行了分析

给出了系统中重要模块的设计方法

并对内存寻址和带宽估计进行了精确计算。测试结果表明:利用单芯光纤可完成最大分辨率为1 024 pixel×768 pixel

刷新频率为60 Hz的图像源的实时传输

最大传输速率达1.5 Gbps

距离为5~10 km。与原传输方案相比

该方案减少了额外光端机设备

光纤利用率提高了80%

并利用接收端级联减少了光纤铺设成本。系统能够满足城市交通指挥中心对诱导屏实时信号的传输要求

传输性能可靠

已应用于现行交通诱导系统中。

Abstract

An optical fiber transmission system was designed to implement the long-distance and real-time 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 pixel?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 transmission task of real-time image data from a traffic command center to the guidance LED display in most of the cities.

关键词

Keywords

references

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