PLC在电梯控制中取的应用.doc

摘 要 PLC（可编程控制器）作为一种工业控制微型计算机，它以其编程方便、操作简单尤其是它的高可控性等优点，在工业生产过程中得到了广泛的应用。它应用大规模集成电路，微型机技术和通讯技术的发展成果，逐步形成了具有多种优点和微型，中型，大型，超大型等各种规格的系列产品，应用于从继电器控制系统到监控计算机之间的许多控制领域。随着社会的不断发展，楼房越来越高，而电梯成为了高层楼房的必须设备。 电梯从手柄开关操纵电梯、按钮控制电梯发展到了现在的群控电梯，为高层运输做出了不可磨灭的贡献。PLC在电梯升降控制上的应用主要体现在它的逻辑开关控制功能。由于PLC具有逻辑运算，计数和定时以及数据输入输出的功能。在电梯升降过程中，各种逻辑开关控制与PLC很好的结合，很好的实现了对的控制。 关键词：PLC；电梯控制系统；应用 Abstract PLC ( programmable logic controller ) as an industrial control computer, with its programming convenient, simple operation and in particular its high controllability and other advantages, in the industrial production process has been widely used. It applies the large scale integrated circuit, the miniature machine technology and the communication technology development achievement, gradually formed a variety of advantages and micro, medium, large, super large specifications of the various series of products, applied from the relay control system to the monitoring computer between many control field. With the continuous development of society, more and more high buildings, but the elevator became the high-rise building to the equipment. The elevator from the handle switch operation elevator, elevator button control to the development of the present group control elevator, as a high transport made an indelible contribution. The PLC control in the elevator the application is mainly reflected in its logical switch control function. Because PLC has the logic operation, counting and timing and data input / output function. In the elevator in the process, each logical switch control and the PLC very good union, very good realization to control. Key words：PLC ； elevator control system； application 目　录 摘要 2 第1章　概述 4 1.1可编程控制器的产生及发展趋势 4 1.2可编程控制器的结构和特点 9 1.3可编程控制器的主要性能指标及工作原理 13 1.4可编程控制器的应用领域 15 第2章　电梯控制系统及接口电路的设计 18 2.1电梯控制系统的构成 18 2.2电梯控制系统的特点 20 2.3可编程控制器控制系统设计思路 22 第3章　控制方案的选择 24 3.1继电器控制 24 3.2微机控制 26 3.3可编程控制器控制 28 第4章　可编程控制器控制电梯形图的设计 32 4.1电梯控制系统对楼层信号的处理 32 4.2 电梯控制系统对指令、召唤的处理 34 4.3电梯控制系统对选向功能的处理