单片机八路无线抢答器.doc

河南理工大学毕业设计（论文）说明书 62 - 摘要 抢答器是为了保证在抢答过程中的公平、公正为竞赛参赛者答题时进行抢答而设计的一种优先判决器电路，广泛应用于学校、工厂、电视节目等各种智力竞赛的娱乐活动中。但是一些比较小的场合由于资金问题无法购买比较昂贵的抢答器，如果没有抢答器又会由于主持人的误判而使比赛缺乏准确性、公平性，所以自行设计一个抢答器是比较合理的，既能实现其应有功能使比赛公平又能降低成本，特别适合一些农村的学校和和比较小型的单位。 本次无线抢答器设计分为五个模块，分别为：主机控制模块、显示模块、报警模块、设置控制模块和无线收发模块。其中无线模块由发射端和接收端组成，发射端采用PT2262进行编码,接收端由PT2272解码将解码后信号送入单片机中。抢答选手通过手中的遥控按钮进行无线抢答，如果主持人还没有按下开始按钮，选手就进行抢答，则视为抢答犯规。蜂鸣器会一直响个不停直到主持人按下停止键。抢答结果通过单片机控制由显示模块显示出来。当抢答成功和倒计时时间到，都有蜂鸣器进行语音提示。 关键词：抢答器； 无线； 单片机 Abstract Responder is a priority decoder circuit that ensure the fairness and justice of the process when responder for contests participants vies to answer , widely be used in schools, factories and the television program various quiz entertainment activities. But it is so expensive to buy one contest editor in some small occasions.If no contest device the competition is lack of accuracy and fairness due to the hosts misjudgment, so it is so necessary to design a contest regulator . It not only realize its function to make the game fair but also reduce the costs, especially suitable for some rural schools and compare diminutive units. This wireless contest decoder is divided into five modules,respectively is: the mainframe control module, display module, alarm module, setting control module and wireless transceiver module. Wireless module is composed by launch and receiver, the launch end use PT2262 encoded , then the receiving end decode by PT2272 and signal be sent into SCM. Competitor answer question by remote button in the hands ,if the hosts have not press the start button before the player press the button in the hand, it will be regarded as foul. And the buzzer will ringing all the way until the host press the button of stop. Last contest results will be displayed by the display module through the single-chip microcomputer control .When contest success and countdown time is over, there are alarm to remin