文档介绍：摘 要
随着现代高科技的发展，住房和办公用楼都已经逐渐向高层发展。电梯是高层宾馆、商店、住宅、多层仓库等高层建筑不可缺少的垂直方向的交通运输工具。由于传统的电梯运行逻辑控制系统采用的是继电器逻辑控制线路，存在易出故障、维护不便、运行寿命较短、占用空间大等缺点。所以由可编程控制器（PLC）或微型计算机组成的电梯运行逻辑控制系统所代替，正以很快的速度发展着。
本次设计的主要内容是以单片机为主控制器的五层楼的电梯控制系统。主控芯片选用89C51型单片机，通过单片机输出电平控制变频器调节电梯速度。电梯控制系统是比较复杂的一个大型系统，在计算机诞生的几十年里，继电器控制系统为电梯控制的发展做了巨大的贡献，但在性能上和PLC还是有本质上的差距。在科技的不断发展下，我想单片机控制系统很快可以解决抗扰性，成为方便有效的电梯控制系统。
关键词：单片机 89C51 电梯控制 变频器
Abstract
With modern high-tech development, housing and office floor level have been gradually developing. Elevator high-rise hotels, shops, residential, multi-storey high-rise buildings such as warehouses vertical indispensable means of transport. The logic of traditional elevator control system is used in relay logic control circuits, is apt to fail, to maintain the inconvenience, running short-lived, large, etc space. So by the programmable logic controller (PLC) or micro-computer to run the composition of the elevator instead of the logic control system, is developing a rapid rate.
The design of microcomputer-based controller is mainly five-storey building of the elevator control system. Use the main chip 89C51 MCU by MCU adjust the output level control elevator speed converter. Elevator control system is a complex of a large system, the computer was born several decades, the relay control system for elevator control has done a great contribution to development, but in performance and the PLC is in essence the gap. The continuous development of science and technology, I would like to single chip control system can be solved very soon immunity, a convenient and effective elevator control system.
Keywords: 89C51 Microcontroller elevator control inverter
目 录
1 绪 论 1
1
2
4
2 方案的比较和确定 5
继电器控制系统 5
PLC控制系统 6
7
电梯控制系统的确定 8
3 硬件系统的设计 10
硬件结构图 10
89C51单片机的内部结构 11
单片机引脚及功能 12
单片机外围电路的设计 15
震荡器和时钟电路 15
看门狗复位电路 15
变频器的选定 18
输入模块的设计 21
输出模块设计 27