随着我国经济的发展，城市中涌现出越来越多的高层建筑，而与之配套的电梯已成为人们日常生活中不可缺少的工具。同时，由于国家老龄化问题目益突出，低层住宅建筑（一般5层左右）同样也有使用电梯的要求。所以电梯控制的研究在现代社会有着很重要的作用，作为一名电专业的学生，这些正是自动化专业所学习的内容，又是自己的兴趣所在。为了以后更好的工作和更深入的理解基于单片机的电梯控制系统，所以选择了该课题。
本课题是五层乘客电梯的模拟控制系统，其主要具有如下功能：
1．两部电梯由一组按键控制，当有人按下按键时，空闲的那一部电梯作出响应，若两部电梯均处于空闲的状态，两部电梯同时响应。实现控制和实时显示（上升、下降状态、当前处于哪一层、在哪一层停止等信息）。
2．电源接通后,若有人按下某一层的按键，它就会在相应的那一层停止4秒钟，并伴有开门和关门的声音提示。
关键词：AT89S51
；按键扫描；数码管显示；电梯控制；
Abstract
With the development of China's economy, the city has emerged more and more high-rise buildings, and with the ancillary elevator has become an indispensable tool in daily life. At the same time, due to the problem of national aging prominent, low-rise residential buildings (usually about 5 layers) also use the requirements of the elevator. Therefore, the study of elevator control in modern society has a very important role, as an electric professional students, these are the automation of professional learning content, but also their own interests. In order to better work later and more in-depth understanding of the elevator control system based on single-chip, so the choice of the subject.
This topic is a five-story passenger elevator simulation control system, which has the following functions:
1. The two elevators are controlled by a set of keys, and when one presses the button, the idle elevator responds, and if the two elevators are in an idle state, the two elevators respond at the same time. To achieve control and real-time display (rising, falling state, which layer is currently in which layer to stop and other information).
2. When the power is turned on, if someone presses a layer of the button, it will stop in the corresponding layer of 4 seconds, accompanied by open and close the door of the voice prompts.
Key words: AT89S51; key scan; digital tube display; elevator control;
