文档介绍：武汉工业学院
硕士学位论文
基于嵌入式的GPRS远程控制的大屏幕LED显示系统的研究
姓名:葛洲
申请学位级别:硕士
专业:机械设计及理论
指导教师:秦实宏
20080601
摘要

近年来,LED 显示屏作为一种高科技产品广泛应用于诸多领域,日益引起
人们的重视。尽管目前 LED 显示屏的应用范围越来越广,但是在应用中也存在
着诸多不便之处。例如 LED 显示屏需要现场编程更新数据等。本文研究讨论了
一种基于 GPRS 无线通信的低成本 LED 文字显示屏的控制系统,并研究了一种
无线远程控制的大屏幕显示系统的软硬件方案。
文章首先介绍了 LED 显示屏的工作原理,提出了本显示系统的结构组成,
然后具体阐述系统的硬件和软件设计过程;介绍了 GPRS 技术,并分析了其在
无线远程控制大屏幕显示屏上的应用;接着又分析了嵌入式 CPU ARM 的用于
显示系统的技术情况。这个 32 位的 RISC 处理器,负责接收上位机发送的指令
集并解析指令集、产生字模数据和提供显存相关的操作,并与 FPGA 通信;FPGA
则用于 LED 显示屏的扫描驱动电路设计,重点介绍了其内部的功能模块;最后
简要的介绍了绘制 PCB 板时的原则。本文方案实现了大屏幕字符信息的动态显
示,是一种具有实际应用价值的远程可控的 LED 大屏幕显示系统。

关键词:大屏幕,LED,嵌入式,ARM,FPGA,GPRS,远程控制

II
ABSTRACT

As a high technology production, LED(Light Emitting Diode)display screen
attracts more and more people in recent years. With the LED display screen widely
used in many fields, there exposed some new problems in the application: for
example, it is necessary to program in field to control a LED display screen, etc. In
this paper, a method is proposed which can control the low cost LED display screen
remotely without in field. The control system had been give one based on GPRS, a
munication mode, and an integrated and feasible solution of hardware
design.
Firstly,the paper introduces the operating Principle of LED display screen and
Puts forward originally position. Secondly,the paper explains the
hardware and software design process of LED display system. ARM is 32 bits RISC
processor. It is responsible for receiving instruction and analyzing it, supporting the
operation about display memory, municating with FPGA. FPGA is
responsible for scanning and driving circuit of LED display. Finally, some keys of
drawing PCB are given. The display system realizes the dynamic display of letters
and pictures. In word,it is remote control LED screen display system which is
worthy of real application.

Key words: Lattice Display, LED, Embedded, ARM, FPGA, GPRS, Remote

III