基于ATMEGA16L⁃8PL单片机的线阵LED图文显示  

Linear array LED image⁃text display based on ATMEGA16L⁃8PL

作　　者：吴琎[1] WU Jin(Nanchang Institute of Technology,Nanchang 330044,China)

机构地区：[1]南昌理工学院,江西南昌330044

出　　处：《现代电子技术》2021年第1期181-186,共6页Modern Electronics Technique

基　　金：江西省教育厅科技项目(GJJ181001)。

摘　　要：通常的LED图文显示往往存在LED数量较多、控制相对繁复的问题。针对这一问题,提出一种新型的以ATMEGA16L⁃8PL单片机为基础的线阵图文显示装置。以达到显示精准、抗干扰性强的目的,从而进一步显著提升LED显示屏的显示效果。系统主要的模块组成包括电池、单片机、标志杆、电机以及相应的稳压电源等。单片机为线阵LED图文显示装置主要的控制核心,LED的亮度自动调节通过对应的光敏三级管完成。同时,通过按键控制切换不同的工作状态,相应的程序编写通过C语言完成。编写的各个子程序主要实现的功能包括同心圆的显示、相应字符的显示以及指针式秒表的显示,通过按键次数的不同实现不同子程序的调用。同时,能够在外界环境不同光照强度下进行亮度的自动调节。经过实践检测,LED屏显示清晰稳定,性能更佳。In general,problems like the quantity of LEDs is too large and the control is complicated often occur to LED image⁃text display.Therefore,a new linear array image⁃text display device based on ATMEGA16l⁃8PL is designed to achieve accurate display and strong anti⁃interference,so as to further improve the display effect of LED display screen.The main modules of the system include battery,single chip microcomputer,marker pole,motor and corresponding regulated power supply.The single chip microcomputer is the main control core of linear array LED image⁃text display device.The LED brightness is automatically adjusted by corresponding photosensitive transistor.The key control is used to switch different working states,and the corresponding programming is compiled in C language.The main functions of each compiled subroutine include the display of concentric circle,the display of corresponding characters and the display of pointer stopwatch.Different subroutines are called by different keystrokes.The device can adjust the brightness automatically under different ambient illumination intensity.The result of practical test shows that the display of LED screen is clear and stable.

关 键 词：线阵LED 图文显示 亮度调节 程序设计 电路设计 计算分析 

分 类 号：TN710-34[电子电信—电路与系统]