1、 毕业设计（论文）报告毕业设计（论文）报告 题 目 基于基于PLC的三人智力抢答器的三人智力抢答器 设计设计 院 系 中德机电学院 专 业 机电一体化技术 班 级 学生姓名 学 号 指导教师 2013 年 04 月 基于 PLC 的三人智力抢答器设计 i 基于基于 PLCPLC 的三人智力抢答器设计的三人智力抢答器设计 摘要：摘要：随着我国经济和文化实业的发展，在很多公开竞争场合要求有公正的竞 争裁决，诸如证券、股票交易及各种智力竞赛等，因此出现了抢答器。最初的抢 答器是由优先权编码器构成的逻辑电路， 其运算速度慢， 线路复杂， 可靠性不高， 功能也比较简单，特别是当抢答路数很多时，实现起来就
2、更加困难。因此，一种 能够体现竞赛的公开、公平、公正性的知识竞赛抢答器成为一种需求。 本设计将以 PLC 为核心设计了系统结构图、程序指令、梯形图以及输入输 出端子的分配方案， 在保留了原始抢答器的基本功能的同时又增加一系列的实用 功能并简化其电路结构，其将以其控制方便，灵活，只要改变输入 PLC 的控制 程序， 便可改变竞赛抢答器的抢答方案， 从而使得竞赛不断完善其公平、 公正性。 关键词关键词：PLC、三人智力抢答器、LED 基于 PLC 的三人智力抢答器设计 ii Three people of intelligence Responder design based on Three p
3、eople of intelligence Responder design based on PLCPLC Abstract：With the development of our country economy and cultural industry,public competition requires a fair adjudgement in many occasions,such as securities and ruling stock trading and various intelligence contest etc, resulting in various re
4、sponder. First vies to answer first is composed of priority encoder which is constiuted by logic circuit, the speed and reliability of it is not high and the circuit is complex, but the function is simple. especially when there are many responders, it is more difficult to achieve. Therefore, a respo
5、nder to reflect a kind of openness, fairness and impartiality of the knowledge competition is a kind of demand occupations. The core of this design is based on PLC ,it is composed of system structure diagram, procedures, ladder-diagram and the allocation of input and output terminals,the design not
6、only retains the basic function of the the original responder but increases a series of practical function and simplifies the circuit structure, it will be easy and flexible to its control, as long as change the PLC control procedures, you are able to change the program of the competition responder, making the competition fair and justice. Key words：PLC、 Three the knowledge competition responder 、LED 基于 PLC 的三人智力抢答器设计 iii 目录目录 前言 1 第一章 可编程控制器概论 3
