毕业设计（论文）-基于PLC控制的物料运送系统精选.doc

四川省高等教育自学考试机械制造与自动化专业 毕业论文 论文题目 基于PLC控制的物料运送系统 指导老师 学生姓名 准考证号 2011年 9 月 14 日 基于PLC控制的物料运送系统Material transport system is an important component of logistics, it is not direct human intervention in the case of automatic access to the goods. It is a modern industrial society, the development of high-tech products, to accelerate the flow of logistics and cost of great significance. In recent years, with consumption levels, more and more businesses realize the improvement of logistics and transport systems and reasonable development of the business is very important, but for some small supermarkets often have to classify the goods stored, and the establishment of related goods information, always follow, easy to stock information on the master, if only by manual, so that is time-consuming and not easy to business development. The main subject of the above problems of the classification system for access control design: the first is the artificial establishment of a goods information database. Goods in storage, the use of bar code scanning incoming goods information in the computer, and finishing instructions will be passed to the corresponding PLC. And PLC controlled pneumatic system according to instructions, the stepper motor movement, the goods stored in the specified location; in the pickup, the control and inventory is roughly the same idea, in order to achieve the classification of goods and access functions. Are met throughout the process to obtain first principle of pre-existing goods. Keywords: PLC, bar code scanner, stepper motors, Pressure system, sensors 目 录 第一章 绪论 1 1.1引言 1 1.2 题的目的和意义 1 1.3总体方案 1 1.3.1 系统的总体方案 1 1.3.2 系统的特点 2 1.4 本文研究内容 2 第二章 物料运输控制系统的原理 3 2.1 PLC简介 3 2.1.1 PLC的概述及发展 3 2.1.2 PLC的应用特点 4 2.1.3 PLC的应用领域 5 2.2计算机 6 2.2.1计算机的定义 6 2.2.2 计算机的应用领域 6 2.3 EAN码及条码扫描仪 6 2.3.1 EAN码介绍 6 2.3.2 条码扫描器MS-890特点 7 2.3.3 MS-890的应用领域 8 第三章 物料运输控制系统的硬件设计 8 3.1