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大型动感霓虹灯设计论文.doc

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大型动感霓虹灯设计论文.doc

本科毕业论文(设计)论文题目大型动感霓虹灯设计学生姓名所在院系机电学院所学专业应用电子技术教育导师姓名完成时间摘要该动感霓虹灯设计是基于8031单片机、串口联级新型的共阴极驱动芯片MAX7219霓虹灯扫描控制器,采用环保节能LED及LED灯组以实现个性化的动态显示效果。该设计的动感霓虹灯,整体上可以分为电源模块、显示模块和控制模块三个部分。电源模块采用变压器、桥式整流滤波电路和7805稳压芯片构成,为CPU、EPROM及MAX7219等弱电电路供电。显示模块采用LED及LED灯组,灯线采用独立LED有序排列形成,灯字则采用LED灯组来实现,并用MAX7219来实现恒流驱动,整体效果动感十足,醒目形象。控制模块包括单片机8031、程序存储器EPROM2732、地址锁存器74LS373、地址锁存器74LS138等,完成向显示驱动模块输送扫描花样信号的任务。设计采用新型扫描控制器及MAX7219驱动,具有较高的通用性及很大的实用价值,显示则采用LED实现动感效果,节能环保,经济实用。整体设计成本低廉,实用性强,节能环保,有较高的通用性。关键词LED,动感霓虹灯,单片机,扫描控制,软件设计TheDesignofLargescaleDynamicNeonAbstractThisdesignofdynamicNeonlightisbasedon8031SingleChipMicyoco,theserialportassociationlevelnewcommoncathodedrivestomovethechipMAX7219neonlightscanningcontroller,usesLEDandtheLEDlampbankrealizesthepersonalizeddynamicdemonstrationeffect.Thisarticleintroducedthedesignofdynamicneonlight,divideintothepowersourcemodule,thedemonstrationmoduleandthecontrolmoduleroughly.Thepowersourcemoduleusesthetransformer,thebridgetyperectificationfiltercircuitand7805constantvoltagechipconstitution,isCPU,EPROMandMAX7219andsoontheweakelectricityelectriccircuitpowersupply.ThedemonstrationmoduleusesLEDandtheLEDlampbank,thelampwireusestheindependentLEDorderarrangementformation,thelampcharacterusestheLEDlampbanktorealize,andrealizestheconstantflowactuationwithMAX7219,theoveralleffectprojectisfull,strikingimage.Thecontrolmoduleincludingthemonolithicintegratedcircuit8031,programmemoryEPROM2732,addresslatch74LS373,addresslatch74LS138andsoon,completestothedemonstrationactuationmoduletransportationscanningpatternsignalduty.ThedesignusesthenewscanningcontrollerandtheMAX7219actuation,hasthehighversatilityandtheverygreatpracticalvalue,demonstratedusestheLEDtorealizedynamiceffect,theeconomyispractical.Theoveralldesigncostisinexpensive,usable,theenergyconservationenvironmentalprotection,hasthehighversatility.KeywordsLED,DynamicNeon,SingleChipMicyoco,ScanContronl,SoftwareDesign目录1绪论............................................................................................................................12系统方案设计............................................................................................................12.1系统方框图.........................................................................................................22.2动感效果图.........................................................................................................23系统原理概述及仿真................................................................................................33.1电源模块.............................................................................................................33.2显示模块.............................................................................................................43.2.1发光二极管的工作特性..............................................................................53.2.2发光二极管的工作原理..............................................................................53.2.3发光二极管的驱动电路..............................................................................73.2.4PWM脉宽调制调光技术...........................................................................83.3控制模块.............................................................................................................93.3.1单片机8031最小化系统............................................................................93.3.2程序存储器EPROM2732.........................................................................113.3.3功率输出板................................................................................................134软件程序设计..........................................................................................................144.1主程序流程图...................................................................................................144.2程序编制...........................................................................................................164.2.1顺序扫描程序............................................................................................164.2.2PWM调光程序.........................................................................................175结束语......................................................................................................................17致谢..............................................................................................................................18参考文献......................................................................................................................19附录1驱动电路.........................................................................................................20附录2显示程序.........................................................................................................21

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