大功率LED顯示屏設計與制作

電子信息工程論文編號:DZXX216  論文字數:10024,頁數:30

目錄

摘要 I
ABSTRACT II
第1章 引言 1
1.1 背景 1
1.2 課題內容與目標 1
1.3 研究方法 2
第2章 方案和器件的選擇 3
2.1 LED器件驅動方式的選擇 3
 2.1.1 直流驅動 3
 2.1.2 恒流驅動 3
 2.1.3 脈沖驅動 4
 2.2 主控CPU的選擇 5
 2.3 各種元器件的選擇及相應介紹 6
2.3.1 74HC595 6
2.3.2 74HC138 6
2.3.3 74HC245 7
 2.3.4 74HC4953 7
 2.3.5 ARM920T(s3c2410a) 7
第3章 硬件控制電路的設計與制作 10
3.1 單片機系統及外圍電路 11
3.2 行驅動器 12
3.3 列驅動器 13
第4章 系統程序的設計 14
 4.1 顯示驅動程序 14
 4.2 系統主程序 15
 4.3 系統完成連接 15
第5章 結束語 17
第6章 致謝 18
參考文獻 19
附錄 源代碼 20

摘要

 目前LED顯示屏已經廣泛應用到銀行,郵電,稅務,機場,車站,證券市場及其它交易市場,醫院,電力,海關,體育場等需要進行公告,宣傳的場合。
 本次設計的LED顯示屏是利用發光二極管點陣模塊組成的平面式顯示屏幕.采用單片機方案,控制功能的實現在硬件和軟件兩反面進行互補。單片機及相應軟件主要負責存儲(或生成)顯示數據,安排控制信號的定時與順序,上位機進行通訊等。硬件電路是對單片機驅動能力不足的補充,大體可以分為:微機本身的硬件、顯示驅動電路、控制信號電路三部分。
 關鍵詞 ：單片機、LED發光二極管、掃描驅動 
 
ABSTRACT
 It has been widely applied to many occasions that need to be announced and publicized, such as bank, posts, tax administration, airport, securities market and other trading markets, hospital, electricity, customs and stadium in recent years.
 The LED display designed this time is a flat screen that is made up of light emitting diode dot matrix module. Single-chip was adopted. The implementation of control function is to combine the advantages of both the hardware and the software. Single-chip and relevant software are mainly used for storage (or generate) display data, arranging the timing and sequence of control signals and the communication with the upper computer, etc. The hardware circuit is the supplement of the single-chip with its limited driving ability. It can be divided into three parts: the hardware of the computer itself, the display driving circuit and the signal control circuit.
 Keywords: Single chip, Light emitting diode, Scan driving mechanism