{"title":"Design of off-line led control system based on 4G-LTE","authors":"唐娜娜, Tang Na-na, 郑喜凤, Zheng Xifeng, 武金忠, Wu Jinzhong, 陈浩, Chen Hao, 李宏侠, Liang Hongxia","doi":"10.3788/yjyxs20183301.0055","DOIUrl":null,"url":null,"abstract":"目前市场上常用的脱机LED显示屏控制方式主要为有线通信。随着移动通信技术的快速发展，4G开始进入普及阶段。与传统有线通信方式相比，4G技术不受地点的限制，在工程成本、环境适应性、网络扩展性及设备维护等方面有明显优势。为了解决工程上有线LED显示屏受地理位置、通信距离、安装方式限制无法安装的问题，本文设计实现了基于4G-LTE的脱机LED控制系统。系统以i.MX6Q微控制器为核心，4G全网通模块为无线通信基础，FPGA芯片为LED显示屏扫描控制单元，实现了ARM+FPGA+4G的全新脱机控制系统架构，并设计了基于TCP/IP网络通信协议的上位机软件。该脱机控制系统通过4G网络可以实现高质量图像、视频的无线传输，满足256级灰度全彩色LED脱机屏图文、视频的显示要求。经过测试，系统能够稳定高效运行，具有较强的实用性和较高的传输速率。","PeriodicalId":10128,"journal":{"name":"液晶与显示","volume":"33 1","pages":"55-60"},"PeriodicalIF":0.7000,"publicationDate":"2018-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"液晶与显示","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.3788/yjyxs20183301.0055","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}
The commonly used offline LED display screen control method in the current market is mainly wired communication. With the rapid development of mobile communication technology, 4G has entered the popularization stage. Compared with traditional wired communication methods, 4G technology is not limited by location and has significant advantages in engineering costs, environmental adaptability, network scalability, and equipment maintenance. In order to solve the problem that wired LED display screens cannot be installed due to geographical location, communication distance, and installation method limitations in engineering, this article designs and implements an offline LED control system based on 4G-LTE. The system is based on an i. MX6Q microcontroller, a 4G all network communication module as the wireless communication foundation, and an FPGA chip as the LED display screen scanning control unit. It implements a new offline control system architecture of ARM+FPGA+4G, and designs upper computer software based on TCP/IP network communication protocol. The offline control system can achieve wireless transmission of high-quality images and videos through a 4G network, meeting the display requirements of 256 level grayscale full color LED offline screen graphics and videos. After testing, the system can operate stably and efficiently, with strong practicality and high transmission rate.
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