文档介绍：基于PLC的四层电梯控制系统设计
摘要
随着国民经济的飞速发展,现代化程度日益提高,高层建筑越来越多,电梯也随之增多。电梯产品在人们物资文化生活中的地位得到了提高,成为重要的运输设备之一。国内传统的电梯控制一是由继电器、接触器构成。它不仅存在着可靠性差、成本高、故障率高等缺点,而且在层数增加时,配线变化给制造及安装带来诸多不便。若用PLC控制就解决了以上的不足。
本设计就以PLC作为工具对升降电梯的各种操作进行控制。先对四层电梯的硬件部分作分析,看需要什么样的开关,电机,信号灯等。然后,画出它的控制面板图,再根据控制面板图估计一下I/O点数,这样可以确定所选机型,然后再设计软件,写出流程图,梯形图,写出语句。
最后是进行调试,看看此程序是否可行。
Based on PLC four layers of elevator control system design
ABSTRACT
The rapid development of the national economy, the increasing degree of modernization, more and more high-rise buildings, elevators also will be increased, Elevator products in people′s material and cultural life of the status has been enhanced to e one of the important transport equipment. Traditional domestic elevator control from the first relay , a contactor .Traditional domestic elevator control from the first relay, a contactor . It is not only poor in the reliability ,high cost, high failure rate ings, but also in layers increases, changes to the wiring and installation of manufacturing has brought many unchanged, If the control by PLC to address the above ings.
The design of the PLC as a tool to the elevators for various operating control. Elevator on the first four parts of the hardware analysis, the need to see what kind of switches, motors, lights, etc...Then, the control panel draw maps, plans, under the control panel is estimated to I/O points, so certain selected models, and then software design. Write flowchart. Ladder diagram. Write statements.
Finally, debugging and look at the feasibility of this procedure.
前言
有了电梯,摩天大楼才得以崛起,现随着城市建设的不断发展,高层建筑的不断增多,电梯作为高层建筑中垂直运行的交通工具已与人们的日常生活密不可分。
电梯就是用于高层建筑物中的固定式升降运输设备,它有一个装载乘客的轿厢,沿着垂直或倾斜角度小于15°的导轨在各楼层间运行,是垂直运行的电梯(通常也简称为电梯)、倾斜方向运行的自动扶梯、倾斜或水平方向运行的自动人行道的总称。随着城市建设的不断发展,高层建筑不断增多,电梯在国民经济和生活中有着广泛的应用。
代城市才得以长高。据估计,截至2002年,全球在用电梯约635万台,其中垂直电梯约610万台,自动扶梯和自动人行道约25万台。电梯已成为人类现代生活中广泛使用的人员运输工具。
进入九十年代,随着科学技术的发展和计算机技术的广泛应用,人们对电梯的安全性、可靠性的要求越来越高,(PLC)是根据顺序逻辑控制的需要而发展起来的,,目前,电梯