毕业论文--电梯自动控制系统设计.doc

摘 要 本设计根据电梯自动控制之要求利用欧姆龙系统完成设计。主要介绍了3层电梯的PLC的特点、PLC的功能、发展趋势、PLC控制电梯的软、硬件设计。在示意图、接线图、电梯的控制梯形图、指令表、和程序流程图的基础之上提出了PLC的编程方法。 可编程控制系统（Programmable Logic Controller）是一种专门为在工业环境下应用而设计的数字运算操作电子系统。它采用一种可编程的存储器，通过数字式或模拟式的输入输出来控制各种类型的机械设备或生产过程。 可编程控制器是计算机技术与自动化控制技术相结合而开发的一种适用工业环境的新型通用自动控制装置，是作为传统继电器的替换产品而出现的。随着微电子技术和计算机技术的迅猛发展，可编程控制器更多地具有了计算机的功能，不仅能实现逻辑控制，还具有了数据处理、通信、网络等功能。由于它可通过软件来改变控制过程，而且具有体积小、组装维护方便、编程简单、可靠性高、抗干扰能力强等特点，已广泛应用于工业自动化控制控制的各个领域，大大推进了机电一体化的进程。 电梯是高层建筑不可缺少的运输工具，用于垂直运送乘客和货物，传统的电梯控制系统主要采用继电器--接触器进行控制，其缺点是触点多，故障率高、可靠性差、维修工作量大等，而采用 PLC组成的控制系统可以很好地解决上述问题，使电梯运行更加安全、方便、舒适。目前在电梯行业已得到广泛应用。在层数和控制功能较少的场合，采用PLC控制较为有利。 [关键词] PLC功能及特点 硬件设计 软件设计  Abstract according to the design of mechanical and electrical integration Jinzhou Vocational and Technical College 2004 graduating class -- a design requirement of the use of OMRON elevator control system complete the design. Lift the three-storey main features of the PLC, the PLC function, development trends, the soft PLC control elevator. hardware design. In maps, wiring plans, the elevator control Tally order table on the basis of a process flow chart and PLC programming. Programmable control system is a specialized application designed in industrial environments for the operation of electronic digital computing system. A programmable memory of it. Through digital or analogue input and output of various types of machinery and equipment, or to control the production process. PLC is the combination of computer technology and automation technology and the development of a new generic application control devices in industrial settings. As the replacement of traditional products and the relay. With the rapid development of microelectronics and computer technology, more programmable controller with the functions of a computer, Not only can be realized logic control, but also with the data processing, telecommunications, the Internet and other functions. Because it can be changed by software to control the process, but also has the