电气工程及其自动化本科生毕业论文

本科生毕业论文学院电气信息工程学院专业电气工程及其自动化届别2008届题目基于通信协议的LED屏ActiveX控件设计学生姓名学号指导教师目录摘要....................................................................3前言....................................................................4第一章绪论............................................................51.1选题的目的和意义...............................................................................................................51.2LED发光原理........................................................................................................................51.3LED特点...............................................................................................................................6第二章LED的发展及其应用................................................62.1LED结构...............................................................................................................................62.2LED的发展...........................................................................................................................82.2.1LED的发光强度、效率、功率............................................................................82.3LED灯................................................................................................................................102.4LED的应用.........................................................................................................................102.4.1LED的静态显示...................................................................................................102.4.2LED的静态应用...................................................................................................102.4.3LED的动态显示...................................................................................................112.4.4LED的动态应用...................................................................................................112.5LED发展趋势....................................................................................................................12第三章控件开发........................................................133.1VB开发ActiveX控件........................................................................................................133.1.1ActiveX控件简介..................................................................................................133.1.2ActiveX控件的运行周期......................................................................................133.1.3ActiveX控件运行周期内的关键事件..................................................................143.1.4创建ActiveX控件的三种模式.............................................................................143.1.5开发ActiveX控件的基本步骤.............................................................................153.2LED屏控件开发..................................................................................................................163.2.1通信协议.................................................................................................................173.2.2LED屏ActiveX控件开发.....................................................................................183.2.3LED条屏的组成......................................................................................................233.2.4条屏的连接..............................................................................................................25第四章力控开发.......................................................274.1力控介绍.............................................................................................................................284.2ActiveX控件在力控中的应用.........................................................................................28第五章总结...........................................................31致谢...................................................................32参考文献...............................................................32基于通信协议的LED屏ActiveX控件设计郭正红云南民族大学电气信息工程学院摘要在现代信息社会中各种信息实时的公开发布变的越来越重要。在更好的、方便的获取信息过程中，LED显示屏发挥了巨大的作用。LED作为一种新型的节能、环保的绿色光源产品，受到人们越来越多的关注。LED行业对经济增长贡献越来越大。各个国家已把LED行业做为重要行业来发展。本文首先讲述了LED的原理、应用、实现方法。其次基于VB开发了适用用于通用LED显示屏的ActiveX控件实现了LED屏幕内容的动态更新。最终将该控件应用于三维力控中。关键字：LED显示屏；ActiveX控件；通信协议ThedesignofActiveXforLEDScreenwiththeConmmunicationProtocolGuozhenghongYunnanNationalitiesUniversitySchoolofElectronicEngineeringElectricalengineeringandautomation2008AbstractReal-timereleaseallkindsofinformationinthemoderninformationsocietyhasbecomeincreasinglyimportant.TheLEDdisplayhasplayedahugeroletomorebettertoaccesstoinformation..TheLEDTechnologyasaclearlightsourceforanewtypeofenergysaving,environmentalprotection,hasbeentakedmoreandmoreattentionbythepeople.TheLEDindustryisgrowingcontributiontoeconomicgrowth.EachcountryhastheLEDindustryasanimportantindustrytodevelop.Inthisarticle,firstlydiscussestheprincipleoftheLED,applications,andimplementation.Secondly,basedonthecommunicationprotocoltheActiveXwasdesignedforgeneral-purposeLEDscreen,thentheinformationwhichdisplayonLEDscreencanbedynamicallyupdated.UltimatelytheActiveXtobeappliedinForceControlSoftwaresurrounding.Keywords：LEDDisplayScreen;ActiveX;CommunicationProtocol前言随着电子工业的飞速发展，在20世纪60年代