小型水平传送带输送机构控制系统设计摘要随着时代的进步，继电器控制系统的时代已经过去，PLC以其安全，可靠，灵活，易编程等多个特点成为了新时代的宠儿，使得工业自动化更加完全。经过几十年的发展，LC在国内工业中得到了广泛的运用。本设计是运用西门子S7-200PLC这款小型控制器控制传送带系统的运行，实现自动化生产运输。本文设计介绍了PLC的特点，整个传送带系统的运行过程的工作原理以及PLC的编程。经过设计检测，证明了PLC能很好的联接传送带系统的各个工作环节，实现自动化的生产，并且能够自动检测，大大提升了传送带的性能，提高了整个传送带系统的工作效率，节约了劳动力，节约了生产成本。关键词：小型传送带，PLC,自动化控制Design of control system for small horizontalconveyor belt conveyorAbstractWith the progress of the times,the time of the relay control system has passed,on account of the safety,reliable,flexible,easy programming and other features PLChas become the darling of the new era,leading to the industrial automation more fully.After decades of development,in the industry of our country,PLC has been widelyused.This design is using Siemens S7-200,a small PLC,control the running ofconveyor belt mechanism,to realize the automation of production and transportation.The design introduced the characteristics of PLC,the working principle oftransmission belt of the running process of the system and PLC programming.Afterthe detection of design,proving the PLC can be a very good connecting transmissionBelt feeding system of the various aspects of the work,to realize the automation ofproduction,and can automatically detect,greatly enhance the performance of theconveyor belt,to improve the whole conveyor belt system work efficiency,savinglabor,saving the cost of production.Key Words:Small conveyor belt ;PLC;automatic control目录第一章绪论1.1选题背景及目的.1.2国内外研究现状…1.3本论文主要内容1.4论文主要应用场景.…1.5本章小结.…第二章输送机构控制系统的整体设计.2.1系统的整体框图及传感器介绍…2.2工作原理及设计要求…第三章输送机构控制系统的硬件设计.…3.1控制系统主电路设计…3.2PLC控制回路的接线设计.113.3主要元器件选型….123.3.1PLC的选型.….133.3.2机械手的选型3.3.3交流接触器3.3.4热继电器.…3.3.5空气开关..163.4本章小结.第四章输送机构控制系统的软件设计4.1系统流程图.4.2PLC的I/O分配表194.3各部分程序…4.3.1启动保持停止电路..204.3.2置位与复位电路…214.3.3定时器电路.22