无线智能八路抢答器的设计.docVIP

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 20043050018 指导教师 年 月 日 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 Topic：The wireless intelligent Chinese red army soldier snatches theanswering design Higher professional technical institute Guide Teacher: qin gong Jianghan University School of Physics Information Engineering Abstract： In this paper, Introduces the wireless machine of grabbing for replying and displaying theresult , which has the functionof judgment with 8 channels of grabbing for replying. It does need to distribute the electrical wire , so it is movedexpediently. Chooses the familiar coding - decoding chip PT2262/ 2272 that forms the data coding2decoding circuit . Thewireless emitter is composed of the FM modulate circuit , and the wireless receiver is composed of the FM demodulationchip MC3362. The electric circuit and designing thought of an answering racer based on the common-used series of 74 IC with 8-wire is introduced, and its function is also described. The answering race’s function includes timing, counting, and alarming, besides the basic function of an answering racer. The host sets the provided time for the answering race through the time-setting switch, after this the system will count down the time automatically. If anybody answer the question on time, the counting of time will stop; If nobody answer the question on time, the alarm will give out some sound, helping the host know the race in this turn is of no use, so the function of alarming is achieved. Keywords: The Chinese red army soldier snatches answering , Wireless lau