全自动洗衣机PLC控制3稿.doc

学 士 学 位 论 文 姓 名： 学 号： 指导教师： ： 专 业： 完成日期： 年月日 学 士 学 位 论 文 姓 名： 学 号： 指导教师： ： 专 业： 完成日期： 年月日  摘 要 随着社会经济的发展和科学技术水平的提高，家庭电器全自动化成为必然的发展趋势。随着国家开展家电下乡、扩大内需的政策，洗衣机企业将目光均投向了拥有较大消费潜力的农村市场。。 Abstract With the development of social economy and the improvement of science and technology, household appliances all become inevitable trend of the development of automation. As the country to carry out the policy of home appliances to the countryside and to expand domestic demand, the washing machine enterprise to look to the rural market has a large consumption potential. The washing machine popularization, people is higher and higher to the functional requirement of the washing machine. Full-automatic washing machine PLC control can meet the requirements of people, so it becomes particularly important. A more automated and humanized design of PLC control system research, has far-reaching practical significance. Based on the fully automatic washing machine job indicator light displays a status with the full-automatic washing machine working state design based on PLC automatic control system, mainly small Siemens S7-200 PLC as the core, the use of light emitting diode simulation full-automatic washing machine work lights, button switch for the control signal, the control function of the system is realized by using ladder diagram programming, through the simulation software to simulate the circuit, the design of the full-automatic washing machine including startup, water, washing, drainage, dehydration, alarm, etc. Key words：S7-200small PLC Light-emitting diode ladder diagram 目 录 第1章 绪 论 1 1.1 概述 1 1.2 国内外研究现状 1 1.3 全自动洗衣机控制电路的研究内容 2 第2章 全自动洗衣机控制分析以及设计步骤 3 2.1 全自动洗衣机设备控制要求 3 2.2 工作原理 3 2.3 步骤设计 4 第3章 系统硬件的设计 5 3.1 可编程控制器 5 3.2 继电器 6 3.3 PLC的外围接线图设计 7 3.4 输入地址分配 8 3.5 输出地址分配 8 3.6 内部元件地址分配 9 第4章 系统软件设计 10 4.1 编程软件 10 4.2 程序流程图设计 10 4.3 梯形图编写 13 第5章 系统的仿真 2