无线抢答器设计

下载之后可以联系QQ1074765680索取图纸，PPT，翻译=文档摘要当今的社会竞争日益激烈，评选优胜，知识竞赛之类等活动愈加频繁，因此抢答器的应用与需求也就愈来愈普遍。而现在市场上的一些抢答器成本高、体积大、线路多，而且操作和安装都很复杂。比如普通抢答器，它是由通用集成电路制成，价格高、显示方式简单、性价比较差，人为因素也较大，在知识竞赛活动中无法精确保证公平公正。因此针对各类赛事活动而设计了无线抢答器。此无线抢答器具有安装操作简单，功能强大，稳定可靠等优点。一套标准配置系统就能为不同类型的比赛提供从抢答、评分、记分、计时到出题答题、屏幕显示、分数统计等所需功能，且采用了无线通信技术，减少现场步线的麻烦。可满足不同赛事活动的不同需求，适用于学校、教育部门、企事业工会组织、俱乐部等单位组织举办各种知识、技术竞赛及文娱活动时作抢答之用。能提高活动档次，简化工作流程，减轻工作量、减少人工失误、节约竞赛成本。关键字：无线抢答定时抢答无线发射和接收TheDesignofwirelessAnswerAbstractIntoday'sincreasinglycompetitivesociety,awardwinning,knowledgecontestsandotheractivitiessuchasmorefrequent,sotheApplicationofAnsweranddemandwillbecomeincreasinglycommon.NowAnswerthemarketsomeofthehighcostdevices,thesizeoflarge,multi-line,butalsoverycomplextooperateandinstall.Answerdevicessuchasordinary,whichismadebythegeneralintegratedcircuits,highprices,showingsimple,lowcost,man-madefactorsarealsogreatercompetitionintheknowledgecannotbeprecisetoensureafairandimpartial.ThustheactivitiesofalltypesofeventsdesignedtoAnswerwirelessdevice.Answerthiswirelessdevicewiththeinstallationofsimple,powerful,stableandreliableandsoon.SystemwillbeabletoconfigureasetofstandardsfordifferenttypesofgamesfromAnswer,score,points,timetoanswerquestions,thescreenshowedthatscoresofstatisticsrequiredforfunctionanduseofwirelesscommunicationstechnology,whichreducesthestep-by-steplineofthesceneoftrouble.Differentactivitiestomeetthediverseneedsofeventsforschools,educationdepartments,enterprisesandtradeunionorganizations,clubsandotherunitstoorganizeallkindsofknowledge,technology,competitionandculturalactivitiesforAnsweronly.Canimprovetheactivitylevel,streamlinetheworkflowandreducingtheworkloadandreducemanualerrors,savingthecostofcompetition.Keywords:wirelessAnswertiminganswerwirelesstransceiver目录引言................................................................................................................................1一系统方案与论证......................................................................................................11.1基本要求.............................................................................................................11.2系统方案选择.....................................................................................................11.2.1系统基本结构框图......................................................................................11.2.2通信方案论证与选择..................................................................................2二系统硬件设计..........................................................................................................22.189S52单片机......................................................................................................32.1.1引脚结构.......................................................................................................32.1.2功能特性描述..............................................................................................32.1.3管脚说明....................................................................................................302.2编码解码芯片PT2262/2272..............................................................................62.2.1发射芯片PT2262........................................................................................72.2.2接收芯片PT2272........................................................................................82.2.3PT2262/2272芯片的地址码设定和修改..................................................102.3选手电路...........................................................................................................112.4主持人电路.......................................................................................................122.5315MHZ带2272解码接收电路......................................................................13三电路功能及控制流程............................................................................................13结束语..........................................................................................................................15致谢..............................................................................................................................15参考文献......................................................................................................................16附图一..........................................................................................................................17附录二..........................................................................................................................18引言为完成竞赛抢答任务，该系统分为两大部分：选手电路、主持人控制电路，选手电路和主持人控制电路部分之间的联系，采用无线通信。主持人控制电路采用交流供电，选手电路采用蓄电池供电，基本做到自由移动无线通行。各部分都采用单片机作为控制核心；采用无线收发模块，作为无线通信器件，具有电路简洁可靠的优点。数据的传输，采用帧结构对要传输的数据进行打包。帧结构的起始位采用特殊实用的结构，既可包含发送对象的地址信息，又具有很强的抗干扰能力，使已传送的数据显示十分稳定可靠。抢答显示部分的倒计时，可根据情况从0——99秒任意设定。一系统方案与论证1.1基本要求（1）系统容量：为满足竞赛抢答的要求，系统容量定位为16路。（2）系统能完成：倒计时指令发送与接收；抢答对别信息发送与接收；（3）抢答倒计时可在0-99秒内根据需要任意调整。（4）所有信息交换都采用无线通信。（5）抢答指令发出和抢答成功要有提示音。1.2系统方案选择1.2.1系统基本结构框图图1基本系统结构框图系统工作流程：主持人电路通电后，2位数码管不断加1，以示电路可以正常工作。主持人按下控制开关后，电路进入倒计时预设状态，设置好后再按一下控制开关，则完成预设，数码管显示预设数。当主持人按下开始按钮后，选手可以抢答，同时数码管显示倒计时读秒，如有选手按下抢答键，数码管显示该选手的序号，同时封锁其他的抢答信号，蜂鸣器