无线抢答器设计

无线抢答器设计

无线抢答器的设计

摘要

当代社会知识竞赛举办频繁，抢答器的使用也比较多。普通抢答器，在显示方面还存在不足，个人原因占据大部分，在竞赛活动中无法保证公平。所以针对这类现象采用

了无线抢答器。无线抢答器系统采用无线传输模块，连接选手电路和主持人电路。无线抢答器功能强大，可以根据比赛的要求显示抢答时倒计时，选手的分数，显示该题的分数。这样就可以保证比赛的公平和公正。一套标准无线抢答系统就可以为不同的比赛提供从抢答、评分、计时到屏幕显示分数、统计分数等功能。普通抢答器在活动现场安装比较复杂，而无线抢答器就比较方便，省去了布线的麻烦。举办方选用无线抢答器可以更大的节约成本，优化流程，减少失误，为活动带来更大的影响力。

关键词：无线抢答器无线传输模块倒计时

Abstract

In today's society,knowledge contest activities are more and more frequent.So the demand of Answer will become increasingly common. Answer devices such as ordinary, on display are still insufficient, individual reason occupies the majority,in the competition activities cannot assure fair. So for this phenomenon,we can use answer wireless device. Answer wireless device use wireless transmission module, links player circuit and host circuit.Answer wireless device is very good, it can according to match requirements display answer in the countdown, the players' scores, showed that the topic the scores . This would ensure fairness and justice of the match. A set of standard wireless answering system can provide for different matches from vies to answer first, score, timing to screen scores, statistical scores etc. Function.

Answer devices such as ordinary,in the active site installation is more complex, and the wireless answer device is more convenient,reduce the wiring of trouble. Host machine can choose wireless answer device can more cost savings, optimize the process, reduce mistakes for activities to bring greater influence.

Keywords：Answer wireless device Wireless transmission module Count down

目录

第一章绪论 .......................................................... - 1 -

1.1 研究无线抢答器的目的及意义 ....................................... - 1 - 1.2 研究无线抢答器的内容 ............................................. - 1 - 1.3 国内外的研究现状 ................................................. - 1 - 第二章系统方案 ...................................................... - 3 -

2.1 系统设计要求 ..................................................... - 3 - 2.2 设计框图及方案 ................................................... - 3 - 2.3 通信方案选择 .................................................... - 4 - 第三章电路元器件介绍 ................................................ - 5 -

3.1 单片机89C51 ...................................................... - 5 - 3.1.1 单片机89C51的概述............................................ - 5 - 3.1.2 单片机89C51引脚图............................................ - 5 - 3.1.3单片机89C51引脚说明.......................................... - 5 - 3.1.4 单片机89C51主要性能.......................................... - 7 - 3.2 无线通信 ......................................................... - 8 - 3.2.1 无线信号发射模块.............................................. - 8 - 3.2.2 无线信号接收模块.............................................. - 8 - 3.3 555定时器........................................................ - 9 - 3.4 多谐振荡器 ...................................................... - 10 - 第四章电路设计 ..................................................... - 12 -

4.1 设计选手电路 .................................................... - 12 - 4.2 设计主持人电路 .................................................. - 13 - 4.3复位电路......................................................... - 14 - 4.4 时钟电路 ........................................................ - 14 - 第五章系统的软件设计 ............................................... - 16 -

5.1控制流程图....................................................... - 16 - 5.2 电路功能 ........................................................ - 17 - 第六章整体电路的调试 ............................................... - 18 - 总结 ................................................................ - 19 - 致谢 ................................................................ - 20 - 参考文献 ............................................................ - 21 - 附录 ................................................................ - 22 -