plc在多组抢答系统的应用.doc

 PLC在多组抢答系统的应用

摘 要

随着电子技术的发展，PLC在社会生活中应用越来越广泛。鉴于此，结合社会生活，为了方便学校和各级组织知识竞赛，设计了一个智力抢答器。在借鉴别人成果的基础之上，又设计了一段惩罚程序，应用经验设计法，使程序看上去更加简洁、易懂。惩罚程序的加入使竞赛更加具有竞争意味，体现竞赛的宗旨。数字显示和检测灯双重显现，确保抢答组的显现的准确无误。数字显示是利用两个七段数码管和BCD指令实现的，应用数字显示和分组灯同时显示抢答组数可以防止在数码管损坏或分组灯有一个损坏的情况下准确显示抢答组。
抢答器的程序是用GX-Developer软件的指令完成，将各个输入/输出端子和实际控制系统中的按扭、所需控制设备正确连接，完成硬件的安装。正常工作时程序存放在存储卡中，若要修改程序，先将PLC设定在STOP状态下，运行GX-Developer编程软件，打开抢答器程序，即可在线调试，也可用编程器进行调试。此次下载安装了GX-simulator三菱编程模拟仿真软件，对程序进行了虚拟调试。并进行了拼写检查，程序能够实现预定的效果。

关键词：智力竞赛，数字显示，抢答器 
 
THE APPLICATION OF PLC IN MULTIPLE ANSWER SYSTEM

ABSTRACT

With the development of electronic technology, the applications of PLC in the social life are more and more widely. Combining with social life, I design a mental Responder for the schools and organizations at all levels to facilitate knowledge competition. Learning from others in the basis of the results, I design a punishment procedure by using the method of experience design and make the program looks more concise. You can understand it easily. Punishment procedure was added, means that races is more competitive, reflecting the purpose of competition. Dual digital display and test lights are to ensure the accuracy of the answer in group show. Two seven-segment digital displays are the use of digital control and BCD instructions implementation, and application of digital display and grouping a few lights at the same time display answering group can prevent damage to in groups in the digital tube lights have a case of damage accurately display answering group.
I use the instructions of GX-Developer to complete the producer. With each input/output terminals and the actual control system of the button connected. You complete the correct installation. During normal working procedures, if stored in memory, the first revision procedures set in the PLC operation condition, Stop      GX-Developer  programming software, open contest, online testing program, usable also programmer debugging. Then download and install the simulator GX - simulation software ladder program, and makes a spell checking, the program can achieve the expected results.

KEY WORDS: Quiz, statistics, Responder
 
目　录

前　言 1
第1章 PLC相关知识 2
1.1  PLC的由来 2
1.2 系统程序指令 3
第2章 抢答器的PLC选型及控制要求 5
2.1 选择PLC类型 5
2.1.1 PLC系统设备选型 5
2.2  I/O分配 6
2.3 系统控制要求 7
第3章 抢答器的数字显示 9
3.1 译码器 9
3.1.1 七段显示译码器 9
3.1.2 译码器 10
3.2 显示器件 10
3.2.1 七段共阳极数码管 10
3.2.2 译码器与数码管的连接 12
第4章 抢答程序设计 13
4.1 程序设计 13
4.1.1 违例程序设计 13
4.1.2 抢答程序设计 13
4.1.3 数码显示 13
4.2 程序流程图 13
4.3 控制面板 15
4.4 梯形图程序 16
第5章 程序仿真调试 19
5.1 调试软件 19
5.2 调试状态 19
结　论 25
谢 辞 26
参考文献 27
附　录 28
外文资料翻译 33