LED大屏幕显示控制系统设计.doc

LED大屏幕显示控制系统设计
摘要
LED显示屏是集微电子技术、光电子技术、计算机技术、信息处理技术于一体的大型显示系统。它以其适用范围广、寿命长,工作性能稳定,功耗低、亮度高,而日渐在显示领域中得到广泛应用,如广告、车站、码头、证券、银行等信息传播、信息发布方面,是目前国际上比较流行的显示媒体。
本文介绍了一种全新的LED显示屏控制解决方案,主要使用Altera cyclone飓风FPGA和16位凌阳单片机SPCE061A作为主控器件,采用较普遍的74LS595作为LED 显示屏显示驱动芯片。实验表明按照本系统的设计出的电路简单,控制方便,屏幕显示稳定,效果佳,是现代LED 电子屏的一种很好的解决方案。
文中首先描述了LED 的结构原理、模块、分类、亮度控制方式和电子屏的组成,对cyclone 飓风FPGA的配置模式进行了简要的介绍。对Altera公司编程软件Quartus Ⅱ+PLUS Ⅱ相比独有的特点及新技术进行了比较详细的分析,以便对它有一个比较清晰的了解,并采用此软件为以后的系统设计提供参考。
最后以本系统的192x128的单色(红色)点阵屏为模板,详细的介绍系统电路的设计及在大屏幕上显示汉字和图形的原理及各种显示方式的算法,及如何让屏幕显示的更稳定、清晰做了些探讨。
关键词:LED显示屏; 配置; Quartus Ⅱ; 凌阳单片机; 飓风FPGA
Abstract
LED panels are a large-scale display system, which consist of microelectronics technique, photoelectron technique, computer technique, and information handles technique. With it’s wide application scope, long life span, stable work function, low power consumes, high bright degree, gradually, LED panels e extensive application in display field as the information transmission and announcement measures, Such as advertise, the station, wharf, stock certificate, bank etc. it is popular display medium.
This thesis introduced a kind of all new LED panels control solution. The Mainly control unit use one Altera cyclone EP1C6 and one 16-bit lingyang single-chip processor SPCE061A, which both is popular in current industry control field, use mon 74LS595 as the LED display driver chip. The experiment result according to this system shows that it is a good solution with the characteristics of simplified circuit, conveniently control, stably display and good effect.
this thesis first described the LED’s construction principle, module, and classification. Then gives out a brief introduction of the configuration mode for cyclone FPGA(this system adapts active mode), and gives out a detail description about the programmer software Quartus Ⅱ and it's unique features pared with the MAX+PLUS Ⅱ, which provides reference for new system design.
At last, takes Monochromatic lat