基于PLC六路抢答器控制系统设计(S7-200)(含CAD接线图梯形图,组态王)

基于PLC六路抢答器控制系统设计(S7-200)(含CAD接线图梯形图,组态王)(论文说明书23000字,外文翻译,CAD图4张,组态王,组态王视频)
摘要
在科技高速发展的21世纪，人才成为最重要的社会资源之一。竞争日益激烈，人才选拔，评选择优的活动越加频繁，而在这些活动当中，往往分为几组选手参加，针对主持人提出的问题，如果用举手的方式抢答，往往会因主持人判断的误差，造成比赛的不公平性。本着公平公正的原则，就需要有一种稳定、准确的工具，因此数字竞赛器应运而生，当今的社会竞争日益激烈，选拔人才，评选优胜，知识竞赛之类的活动愈加频繁，那么也就必然离不开抢答器。因此抢答器是机关学校、电视台等单位开展智力竞赛活动必不可少的设备，通过抢答者的按键、数码显示等能准确、公正、直观地判断出优先抢答者。本产品采用了数字显示器直接指示，自动锁存显示结果，并自动复位的设计思想，由数字电路以及外围电路组成，分为六路抢答；在抢答同时附有声音输出接口，提示主持人此时已完成这次的抢答。不仅如此，为了方便不同场合的智力竞赛活动，为需要定时答题者提供可调计时器，无需人工参与。与其他抢答器电。相比TRACT较有分辨时间短、结构清晰、成本低、易操作、制作方便等优点。
关键词：竞赛活动；抢答器；复位；可调倒计时

Design of responder control system based on PLC
Abstract
In the 21st century, with the rapid development of science and technology, talents have become one of the most important social resources. Competition is increasingly fierce, talent selection, selection activities are more frequent, and in these activities, often divided into several groups of players to participate, in response to the host's questions, if you raise your hand to answer, often due to the host's error in judgment, resulting in the unfairness of the game. In line with the principle of fairness and justice, there is a need for a stable and accurate tool, so the digital contest came into being, today's social competition is increasingly fierce, the selection of talent, the selection of excellence, knowledge competition and other activities are increasingly frequent, then it is inevitable that the answer machine. Therefore, the first responder is an essential equipment for institutions such as schools and TV stations to carry out intelligence competition activities. It can accurately, fairly and intuitively judge the first responder through the buttons and digital display of the first responder. This product USES the digital display direct instruction, the automatic lock display result, and the automatic reset design thought, by the digital circuit and the peripheral circuit composition, is divided into six ways to answer; At the same time with a sound output interface, prompt the host has completed this answer. Not only that, in order to facilitate the intelligence competition activities in different occasions, for the need to time respondents to provide adjustable timer, without the need for human participation. Compared with other responder circuits, it has the advantages of very short resolution time, clear structure, low cost, easy operation and convenient production.
Key words: competition; canswer; lock; reset; adjustable countdow
 

目录
摘要    i
Abstract    ii
1 引言    1
1.1  PLC的简介    1
1.2  PLC的用途与特点    2
1.2.1  PLC的用途    2
1.2.2  PLC 的特点    2
1.3  PLC 的分类    4
1.3.1  按 I/O 点数容量分类    4
1.3.2  按结构形式分类    5
1.4  可编程控制器概述    5
1.4.1  PLC基本结构    5
1.4.2  PLC的性能指标    5
1.5  抢答器的设计要求    6
2  整体方案的选择    7
2.1  整体功能介绍    7
2.2  竞赛抢答器的控制要求    7
2.3  抢答器控制系统的工作原理    8
2.4  用单片机和PLC分别做系统的比较    8
3  硬件电路设计    11
3.1  控制特点分析    11
3.2  PLC机型的选择步骤与原则    12
3.3  流程图(见附图)    37
3.4  西门子S7-200系列PLC的编程元件的介绍    14
3.4.1  取指令与输出指令的使用说明    15
3.4.2  S7-200 PLC的基本组成    15
3.4.3  CPU模块结构    15
3.5  应用系统的可靠性措施    16
4  设计梯形图的程序    21
4.1  梯形图程序的设计（见附录）    21
4.2  梯形图的介绍    21
4.3  电器原理图的绘制（见附图）    23
5  软件设计    25
5.1  软件I/O分配    25
5.2程序指令    26
5.3  SETP7编程软件的使用与安装    29
5.4程序的下载与调试    29
参考文献    33
附录    35
DesignandImplementofResponderBasedonFreescaleHCS12SingleChipMicrocomputer    46
中文文献    55
致谢    62