摘  要:在电子技术迅速发展的今天，PLC被非常广泛的使用于电气工程及其自动化设备中，很多行业也离不开PLC的控制，PLC在向微型化，网络化和开放性方向发展，PLC在很长的一段时间内都处于工业控制自动化领域的主导地位，为各种各样的自动化控制设备提供了可靠，安全的控制方案。本设计主要针对基于PLC控制的面包机控制系统做出了设计。随着经济时代的到来，人们的生活水平逐渐提高，但是相应的，生活节奏加快，导致人们没什么时间来好好的经营自己的生活，特别是上班一族，在饮食方面的时间更是少之又少；西方“面包加牛奶”式的饮食习惯受到了人们的追捧，在此基础上，各种面包类商家应运而生，但是传统的手工制作无法满足广大顾客的需求，面包机的加工适应了市场产出的需求，全面满足了人们对面包的需求。工业化生产面包也可以满足顾客个性化的口味，即使糖尿病人也可以吃到无糖面包。它无需专业技能，可轻松操作，使用起来非常简便，而且做的面包卫生，比传统烘烤面包更经济实惠，更重要的是，让顾客可以吃到新鲜的、可口的、营养的面包。 

　　本课题研究的面包机采用PLC控制，用户只需要将原料放入面包机并选取对应按钮就可以了，面包机自动完成制作、烘烤、包装面包的全过程，实现流水线生产面包，完全满足现代化生活需求以及上班族忙碌的生活节奏，省时、省力又省心。

关键词：面包机：PLC；流水线

ABSTRACT:Nowadays ，the rapid development of electronic technology , PLC is widely used in electrical engineering and automation equipment，there are a lot of industrys depend on PLC . PLC becomes in the direction of miniaturization, networking and opening . In a very long period of time，PLC is in the leading position in the field of industrial control system. Providing a reliable, safe control scheme ,for various automation control equipment. My design  mainly study on the control system for the bread machine based on PLC control.

　　　With the development of economy, the living standard has improved, but the corresponding, to speed up the pace of life, people have no time to have a good result in the management of their own lives, especially the gens going to work, in the diet of the time is less and less; western "bread and milk" type of diet by the people eventually, on the basis of this, all kinds of bakery business emerge as the times require. But the traditional handmade cannot meet the demands of the customers, to adapt to the market demand for processing output of bread machine, fully meet the demand for bread.

　　　Industrial production of bread can also satisfy customer individual taste, even diabetes can eat sugar-free bread. It requires no professional skills, easy operation, use rise very convenient, but also make bread health, than the traditional baking bread is more economical, more important is, let the customer can eat fresh, delicious, nutritious bread. 

　　Bread machine this research adopts PLC control, the user only needs to ingredients into the bread machine and select the corresponding button, automatically making, baking bread, packaging the entire process of bread machine, realize the production of bread, fully meet the needs of modern life and the rhythm of life of workers busy, time saving, labor saving and worry.

Keywords: bread machine；PLC；pipeline