基于FPGA的点阵汉字显示.doc

基于FPGA的点阵汉字显示
摘要:本课程设计主要研究基于FPGA的点阵汉字动态显示。首先介绍了LED点阵显示汉字的原理,然后通过编程控制可以显示中英文字符、图形及视频动态图形。LED显示以其组构方式灵活、亮度高、技术成熟、成本低廉等特点在证券、运动场馆及各种室内外显示场合得到广泛的应用。本实验结合实例运用基于FPGA的VHDL语言编程使其循环显示“武汉理工大学信息工程学院庞锦”这几个字。论文描述了基于现场可编程门阵(FPGA)的硬件电路,以及点阵显示汉字的原理;然后介绍在单个16X16 LED点阵上滚动汉字的原理;最后给出了描述其功能的VHDL语言程序设计方法。通过编程、调试、仿真、下载正确地实现了汉字滚动显示扫描结果,其硬件系统的实验验证也获得了与软件模拟仿真结论相吻合的结果。
关键词:FPGA VHDL语言点阵汉字显示
The dot matrix characters display based on FPGA
Abstract: This course design is primary research based on VHDL of the dot-matrix characters displayed. Firstly introduces the principle of LED dot-matrix display characters, Then through the programming control can show Chinese and English characters, graphics and video dynamic graphics. LED display with its group structure flexible, high brightness, mature technology and low cost characteristics widely used in the securities, sports venues and a variety of indoor and outdoor show occasion. In this study, with examples using VHDL language programming of FPGA-based make the cyclic display "wu han university of science and technology information engineering college Pang Jin” the words. The papers first described based on field programmable gate array (FPGA) hardware circuit, as well as the principle character dot matrix display; and then in a single 16X16 LED scrolling LED dot matrix on the principles of Chinese characters; Finally, the VHDL description language program of its functions design. Through programming, debugging, simulation, download the correct character scroll achieved scan results, the experimental verification of its hardware and software are also obtained findings consistent with simulation results.
Keywords: FPGA; VHDL language; Dot matrix characters display;
一、引言
随着世界和我国经济的高速发展,在公共场所动态显示信息已相当显眼,利用LED点阵滚动显示汉字的出现正好适应了这一市场需求,已经成为信息传播的一种重要手段。采用传统方法设计的汉字滚动显示器尽管有单片机软件的支持较为灵活,但是由于受硬件资源的限制,未来对设计的变更和升级,总是难以避免要付出较多研发经费和较长投放市场周期的代价。随着电子设计自动化技术的进展,可编程FPGA器件进行系统芯片集成的新设计方法,也正在快速地取代基于PCB板的传统设计方式。因此,本文主要阐述 VHDL语言实现在16*16点阵上的汉字滚动显示问题。
目前,国内从事LED显示屏生产