[工学]基于PLC和组态王的全自动洗衣机控制系统设计.doc

河南理工大学 本科毕业设计（论文） 题目：基于PLC的全自动洗衣机控制系统设计 学 院：xxxxxxxx 专业班级：xxxxx 姓 名：xxxxx 学 号：xxxxx 指导教师：xxxxx 2012 年 06月06日 摘 要 随着科技日新月异，人民生活水平不断提高，消费者对家庭电器自动化的需求不断加大，其中全自动洗衣机占很重要的位置。总体看来，高效节能、节水以及环保的全自动洗衣机一直在市场上占主导地位。 传统的洗衣机采用继电器控制，而大多数继电器的优点是装置结构简单、价格便宜、抗干扰能力强，但其容易损坏，产生噪音，耗能大。PLC的优点是：可靠性高，耗电少，适应性强，运行速度快，寿命长，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。 本设计采用西门子公司的S7-200系列的PLC作为核心控制部件，利用其特点，对按钮、电磁阀、开关等其他一些输入/输出点进行控制，实现了洗衣机洗衣过程的自动化。本文对全自动洗衣机的控制系统进行了分析，进行了流程图和梯形图的设计，并进行仿真测试。为了能更直观的显示出整个自动控制过程，本设计运用组态王软件建立了一个全自动洗衣机的监控系统画面。 关键词：PLC； 全自动洗衣机； 组态王 Abstract Along with the development of the science and technology, peoples standard of living rises ceaselessly, and the demand of household appliances increases, in which full automatic washing machine occupies a very important position.Overall, full automatic washing machine with high efficiency and energy saving, water conservation and environmental protection in the market has been held the dominant position. The traditional washing machine use relay control, most of the relays have the advantages of simple structure, price cheap device and strong anti-interference ability, but they are easy to be damaged, produce noise, and consume huge amount of energy. The characteristics of PLC are high reliability, less consumption, strong adaptability, fast operation and long life. This design used the Siemens S7-200 PLC as the key control components. According to its characteristics, it controlled the button, solenoid valve, switch, or some other input/output point,while realizing the automation of washing machine. In this paper, the automatic washing machine control system was analyzed, the flow chart and ladder diagram were designed. In order to show the automatic control process more intuitively, the design used King view to establish a picture of the full automatic washing machine control system. Key words: PLC; full automatic washing machine; King view 目录 1 绪论 1 1.1选题背景 1 1.2洗衣机的发展概况和现状 1 1.3毕业设计的研究内容及意义 2 2 系统总