LED 顯示屏設計

電氣自動化論文編號:ZD791    論文字數:19449,頁數:45

 目 錄
摘要 ……………………………………………………………………………...I
Abstract…………………………………………………………………………..Ⅱ
第1章 引言……………………………………………………………………...1
 1.1LED顯示屏的發展及現狀…………………………………………………...1
1我國LED顯示屏的發展歷史………………………………………… 1
        1.1.2我國LED顯示屏的發展現狀………………………………………… 2
 1.21LED顯示屏研究的目的和意義……………………………………………..4
 1.2.1課題研究的目的…………………………………………………….. 4
 1.2.2課題研究的意義…………………………………………………….. 5
第2章 LED器件工作原理………………………………………………………  6
 2.1半導體發光基本原理……………………………………………………….6
 2.2LED器件的參數……………………………………………………………7
 2.3LED器件的驅動……………………………………………………………9
 2.4LLED器件使用注意事項………………………………………………….. 13
第3章 LED點陣圖文顯示屏…………………………………………………14
 3.1LED顯示屏的特點…………………………………………………………14
 3.2LED顯示屏的基本結構…………………………………………………….15
 3.3LED顯示屏的硬件設計…………………………………………………….17
    3.3.1 單片機概述…………………………………………………………17
 3.3.2RS232串口…………………………………………………………..24
     3.3.3顯示屏驅動電路……………………………………….…….27   

3.3.4用TPIC6B595構成LED顯示屏……………………………………... 30
第4章 LED顯示屏軟件設計……………………………………………………. 32
 4.1軟件設計思想……………………………………………………………..32
 4.2顯示屏程序清單…………………………………………………………...33
 4.2系統程序流程圖………………………………………………………….. 40
致謝……………………………………………………………………………..42
參考文獻………………………………………………………………………..43
附錄……………………………………………………………………………. .45

摘  要

 LED顯示屏是在信息領域里廣泛應用的工具，本文首先介紹了我國LED顯示屏的發展現狀，以及LED顯示屏的發展歷史，并且從多個方面分析了LED顯示屏的發展前景。
 第二章中主要介紹了LED器件的工作原理和LED器件的主要參數，然后又介紹了LED器件的幾種驅動電路。
 而設計的主要內容是硬件的選擇和軟件的編譯，從而實現顯示屏的顯示功能，本系統是以單片機的基本語言匯編語言來進行軟件設計，指令的執行速度快，節省存儲空間。為了便于擴展和更改，軟件的設計采用模塊化結構，使程序設計的邏輯關系更加簡潔明了。使硬件在軟件的控制下協調運作。
 正文中第三章簡單描述系統硬件工作原理，且附以系統硬件設計框圖，論述了本次畢業設計所應用的各硬件接口技術和各個接口模塊的功能及工作過程, 并具體描述了8051、8031的硬件結構圖和管腳功能。對TI公司的TPIC6B595進行了詳細的介紹。其次闡述了程序的流程和實現過程。本文撰寫的主導思想是軟、硬件相結合，以硬件為基礎，來進行各功能模塊的編寫。
 最后對我所開發的用單片機實現LED顯示屏控制原理的設計思想和軟、硬件調試作了詳細的論述。

關鍵詞：顯示屏；單片機；驅動電路；

THE DESIGN OF the LED DISPLAY

Abstract

 LED display is widely used in the field of information technology (IT). This paper first introduced the present domestic development of LED display, and its historical development, then analyzed the future in many-sided ways.
 The chapter 2 mainly introduces the details of LED and their principles and major parameters, then gives some driving circuits.
While the chief content rest to selecting hardware and to compiling the software to accomplish the functions of the display. The software is compiled by assembler language, whose instruction is fast executed, saving the space of storage. In order to make it convenient to extend or revise, the software is designed in cube mode. In this way, the logic relation of the program becomes briefer and clearer, and hardware can performance coordinately under the software’s control.
The third chapter of the content describes the working principle of the hardware, enclosing the bloke diagram of the system designed. And then discusses the technology of each access and the function and process of work of the cubed access, following the description of the pins and hardware structures of 8051 and 8031 MCU. Finally the TPIC6B595 of TI Corporation is introduced and the procedure and achievement of the program are stated. The main ideology of the contest is to combine the software and the hardware together, the latter compiled under the functions of the former which is the base.
At last, the paper detailed discusses the ideology and the test of the software and hardware of the LED display which is exploded to achieve in the MCU methods.
Key words: display; MCU (microcomputer unit); driving circuit