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本科学生毕业论文论文题目：基于图像的小区智能道闸系统设计学生姓名：王国昌院别：信息与通信工程学院专业：电子信息工程指导教师：吴健辉2013年4月28日I摘要针对车辆出入仍采用人工管理方式的场所，尤其是车辆出入频繁的住宅小区，设计了这种基于图像的小区智能道闸管理系统。该系统以STC89C51单片机为整个系统的控制核心，采用车牌智能识别技术，分别对业主与非业主车辆进行智能管理，实现车辆不停车出入小区的功能。该系统包括车牌信息采集触发模块、车牌智能识别模块、单片机控制模块、道闸电机驱动模块以及电源稳压模块，用多种传感器及其控制电路，实现小区道闸系统的智能识别车牌、自动开启、智能报警等功能。经多次实验证明，正常光照(100～8流明)条件下，对车牌的综合识别概率不低于99.5%。可以满足智能道闸对于车牌识别等应用要求，具有一定的理论与现实意义。整个系统的电路结构简单，可靠性能高，测试结果满足功能要求。关键词图像；单片机；住宅小区；智能道闸；系统设计IIAbstractFortheoccasionthatstilladoptmanualmanagementinvehicleaccess,especiallyintheresidentialareaofthefrequentvehicleaccess,designedandverifiedtheintelligentmanage-mentsystembasedonimagetorecognizelicenseplate.ThecontrolofentiresystembasedonSTC89C51microcontrollercore,throughusingthelicenseplateintelligentrecognitiontechnologytomanageownersandnon-ownersofvehicles,completevehiclesnon-stopoutofthetheresidentialarea.Thesystemincludethelicenseplateinformationacquisitiontrig-germodule,licenseplateintelligentrecognitionmodule,microcontrollercontrolmodule,thedrivemotorcircuit,apowerregulator-circuit,andthebuzzercircuit,andavarietyofsensorandcontrolcircuit,.theentiresystemautomaticallyhunt,intelligentdetectionandala-rmfunction.Afterrepeatedexperimentsprovethatundernormallightconditions(100~80lumens),thelicenseplaterecognitionprobabilityofnotlessthan99.5%.TomeetthesmartBarrierapplicationrequirementsforlicenseplaterecognition,hasacertaintheoreticalandpracticalsignificance.Thewholesystemisasimplecircuitstructure,highreliability,thetestresultsmeetthefunctionalrequirements.KeywordsImage;STC89C51;Residentialarea;Intelligentbarrier;Managementsystem目录摘要............................................................................................................................................IAbstract...................................................................................................................................II1绪论.......................................................................................................................................11.1引言............................................................................................................................11.2道闸概述....................................................................................................................11.3道闸的发展历史及现状............................................................................................21.4论文研究内容及章节安排........................................................................................32小区智能道闸系统总体设计及工作原理...........................................................................32.1小区智能道闸管理系统实现的功能........................................................................32.2小区智能道闸系统所需要的硬件设备....................................................................42.3基于图像的小区智能道闸系统总体设计................................................................53基于图像的智能道闸系统硬件结构设计...........................................................................53.1智能道闸硬件的基本结构........................................................................................63.2车牌信息采集触发模块............................................................................................63.2.1触发模块的主要原理.....................................................................................63.2.2触发模块的分析与论证.................................................................................73.3车牌智能识别模块设计............................................................................................83.3.1车牌识别模块的组成.....................................................................................83.3.2车牌识别的主要流程.....................................................................................93.3.3车牌图像信息处理的主要原理...................................................................103.3.4车牌识别模块的分析与论证.......................................................................113.4单片机控制模块......................................................................................................143.4.1单片机电路图...............................................................................................143.4.2车牌信息核对模块.......................................................................................153.4.3点阵显示模块...............................................................................................163.4.4声光报警模块...............................................................................................173.5道闸电机驱动模块..................................................................................................183.5.1道闸电机驱动模块.......................................................................................183.5.2道闸电机控制电路.......................................................................................193.6电源稳压模块..........................................................................................................203.6.1电源稳压电路图...........................................................................................203.6.2电源稳压结构分析.......................................................................................213.7硬件原理图.....