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1、二○○七届学生毕业论文（设计）存档编号：毕业论文（设计）论文题目无线智能八路抢答器设计学院高等职业技术学院专业电子信息工程姓名学号指导教师年月日20无线智能八路抢答器的设计摘要:介绍的无线抢答计分器,具有8路无线抢答判断功能,无须布线,具有移动方便灵活等优点。无线抢答部份选用专用的编解码芯片PT2262/2272构成数据加解密,用FM调制电路构成无线发射器,用FM解调芯片MC3362构成无线数据接收器,构成了无线编解码抢答电路,使得系统在使用时更可靠,性能价格比方面的指标也得到了加强。控制部份采用74
2、系列常用集成电路设计的数码显示八路抢答器的电路组成、设计思路及功能。该抢答器除具有基本的抢答功能外，还具有定时、计时和报警功能。主持人通过时间预设开关预设供抢答的时间，系统将完成自动倒计时。若在规定的时间内有人抢答，则计时将自动停止；若在规定的时间内无人抢答，则系统中的蜂鸣器将发响，提示主持人本轮抢答无效，实现报警功能。关键词:八路抢答器,，无线发射接收，编码、声光控制20Topic：ThewirelessintelligentChineseredarmysoldiersnatchestheanswe
3、ringdesignStudent:huyijieJianghanUniversitySchoolofHigherprofessionaltechnicalinstituteGuideTeacher:qingongJianghanUniversitySchoolofPhysics&InformationEngineeringAbstract：Inthispaper,Introducesthewirelessmachineofgrabbingforreplyinganddisplayingtheresu
4、lt,whichhasthefunctionofjudgmentwith8channelsofgrabbingforreplying.Itdoesneedtodistributetheelectricalwire,soitismovedexpediently.Choosesthefamiliarcoding-decodingchipPT2262/2272thatformsthedatacoding2decodingcircuit.ThewirelessemitteriscomposedoftheFMm
5、odulatecircuit,andthewirelessreceiveriscomposedoftheFMdemodulationchipMC3362.Theelectriccircuitanddesigningthoughtofanansweringracerbasedonthecommon-usedseriesof74ICwith8-wireisintroduced,anditsfunctionisalsodescribed.Theansweringrace’sfunctionincludest
6、iming,counting,andalarming,besidesthebasicfunctionofanansweringracer.Thehostsetstheprovidedtimefortheansweringracethroughthetime-settingswitch,afterthisthesystemwillcountdownthetimeautomatically.Ifanybodyanswerthequestionontime,thecountingoftimewillstop
7、;Ifnobodyanswerthequestionontime,thealarmwillgiveoutsomesound,helpingthehostknowtheraceinthisturnisofnouse,sothefunctionofalarmingisachieved.Keywords:TheChineseredarmysoldiersnatchesanswering,Wirelesslaunchreceive，Code，Acousto-opticcontrol20目录1绪论·······
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