【原创】【毕业设计论文-范本】基于plc的声光智能抢答器控制系统设计与实现.doc

基于 PLC 的声光智能抢答器控制系统设计与实现

目　　录

摘　　要 .....................................................I

1 PLC 声光智能抢答器的介绍....................................1

1.1 PLC 声光智能抢答器概述 ..................................1

2.5 PLC 的用途 .............................................14

3 系统硬件设计 ..............................................17

3.1 控制系统选取 ..........................................17

3.2 控制系统的硬件组成 ....................................18

3.3 系统控制要求 ..........................................19

3.4 控制系统 I/O 分配表 ....................................20

3.5 系统硬件连接图 ........................................22

4 系统软件设计 ..............................................24

4.1 整体设计 ..............................................24

4.2 PLC 声光智能抢答器控制程序梯形图 .......................24

5.2 程序的现场调试 ........................................32

致 谢 ....................................................32

参考文献 ....................................................33

个指示灯。由于抢答时要显示组号和倒计时故还需要三个数码管，以上

的器件价格不贵并且容易买到，另外 PLC 具有可靠性高、体积小、通用

性、使用方便等优点，因此，我决定选用 SIMATIC S7-200 系列的 CPU226

和数字量扩展模块 EM222 作为本次设计的 PLC。另外，系统设计可分硬件

设计和软件设计，并采用手动控制一种方式，具有方便灵活，维护使用

方便等特点。

PLC 智能抢答器以其结构简单、操作方便、安全可靠、造价低、发展

前景广阔、功能强大等优点，在国内市场占有绝对优势的市场份额并逐

年成上升趋势。抢答器广泛用于电视台、商业机构及学校，为竞赛增添

了刺激性、娱乐性，在一定程度上丰富了人们的业余生活。抢答器在竞

Abstract

This design is the use of PLC (Programmable Logic Controller) on

the six-way Responder Smart sound and light control. Taking into account

only six groups of control smart Responder, enter the port need 10 output

ports need to be 30, so the need for a CPU226 module and two EM222 digital

expansion module, taking into account the need to achieve the sound and light

features two A speaker and three indicators. When the answer in the

countdown to display group number, and it also requires three digital control,

these inexpensive and readily available device, another PLC with high

reliability, small size, versatility, ease of use, so I decided to SIMATIC

absolute advantage in the domestic market share and the market tended to

increase year by year. Responder is widely used in television, commercial

organizations and schools for the competition has added exciting, entertaining,

to a certain extent, enrich people's leisure life. Responder in the contest

accurate, fair and visually determine the answer in person 1. The indicator

shows through the Responder, digital display and warning beeps and other

means to indicate the answer in person 1. If slightly modified the external

circuit, or by adding a branch in the system program, you can change the

six-way Responder Responder more roads. If you remove the systems

interlock and limit functions can be changed Responder pager, can be used in

hospitals, hotel rooms, office office, factory, workshop and other places.

Key words: intelligent answer in, sound and light show, PLC, automatic