摘 要
随着社会经济的发展和科学技术水平的提高，家庭电器甚至工业全自动化成为了必然的发展趋势。全自动洗衣机的产生极大的方便了人们家庭的生活，洗衣机是我国国内电器行业唯一不打价格战的行业，经过多年的发展，我国国产洗衣机不仅在功能上而且在质量上都和世界领先水平同步。纵观洗衣机市场，行业追求的一直都是高效、节能、节水、环保型洗衣机。
根据全自动洗衣机的工作原理，本文介绍并实现了一种基于PLC的全自动洗衣机控制系统，对全自动洗衣机的控制系统进行了分析，在此基础上提出了基于PLC控制的全自动洗衣机控制方案，并对方案进行了论证。利用可编程控制器PLC实现控制，说明了PLC控制的原理方法，特点及控制洗衣机的特色。PLC的优点是：可靠性高，耗电少，适应性强，运行速度快，寿命长等，为了进一步提高全自动洗衣机的功能和性能，避免传统控制的一些弊端，就提出了用PLC来控制全自动洗衣机这个课题。
关键词：PLC；梯形图；全自动洗衣机控制
ABSTRACT
With the development of social economy and the improvement of science and technology, household appliances and industrial automatic into to the inevitable development trend. Fully automatic washing machine produce great convenience to people's life in the family, and the washing machine is not only our domestic electrical appliances industry price war industry, after years of development, our country domestic washing machine not only in function but also in quality and world advanced level synchronization. Throughout the washing machine market, industry pursuit has been the high efficiency, energy saving, water saving and environmental friendly washing machine.
According to the working principle of automatic washing machine, this paper introduces and implements a full automatic washing machine control system based on PLC, to fully automatic washing machine control system was analyzed, and based on this, advances the automatic washing machine control scheme based on PLC control, and the solution. Using the programmable controller PLC control, illustrates the principle of PLC control method, characteristic and control characteristic of the washing machine. PLC is: the advantages of high reliability, less power consumption, strong adaptability, running speed, long service life, etc., in order to further improve the functionality and performance of the washing machine, avoid some disadvantages of traditional control, is proposed to use PLC to control the automatic washing machine is the subject.
KEY WORDS：PLC, Ladder diagram, fully automatic washing machine control
目 录
第一章 绪论 ....................................................... 5 1.1课题的研究背景 ................................................ 5 1.2 洗衣机发展概况和现状 .......................................... 5 1.3 课题研究的目的与意义 ......................................... 6 1.4 本课题研究的主要内容 ......................................... 7 第二章 概述 ........................................................ 8 2.1 PLC定义 ...................................................... 8 2.2 PLC的特点 .................................................... 8 2.2.1可靠性高................................................... 8 2.2.2使用方便灵活............................................... 8 2.2.3编程容易................................................... 9 2.3 PLC的分类 .................................................... 9 2.3.1小型PLC ................................................... 9 2.3.2中型PLC ................................................... 9 2.3.3大型PLC ................................................... 9 2.4 PLC的组成 .................................................... 9 2.4.1中央处理单元（CPU）....................................... 10 2.4.2输入输出模块（I/O模块） .................................. 10 2.4.3编程器.................................................... 11 2.4.4电源...................................................... 11 2.5 PLC的工作方式 ............................................... 12 2.5.1自诊断.................................................... 12 2.5.2通讯服务.................................................. 12
基于PLC的全自动洗衣机控制系统设计(机械CAD图纸)
