毕业设计说明书.doc

摘要电梯作为现代化的产物,早在上个世纪就进入了我们的生活之中。本设计就是基于电子设计自动化( Electronic Design Automation )技术中的甚高速集成电路硬件描述语言( Very High Speed Integrated Circuit Hardware Descri ption Language ) 语言所开发的三层电梯控制程序。 VHD L 具有与具体硬件电路无关和设计平台无关的特性,并且具有良好的电路行为描述和系统描述的能力,并在语言易读性和层次化结构化设计方面,表现了强大的生命力和应用潜力。本文介绍了基于 VHDL 语言设计的电梯控制器,并进行了电路综合和仿真。该控制器遵循方向优先的原则,提供 6 个楼层多用户的载客服务并指示电梯的运行情况。通过程序调试及运行仿真,结果表明,本程序可以完成:电梯运行所在楼层指示、电梯运行方向指示、关门延时设置、看门狗报警、超载报警、故障报警等。关键词: VHDL 、控制器、 EDA 、电梯 Abstract The lift , as the modernized result, are entered inour life in last century. This thesis designs the three - floor lift control on the basis of the electron basic on the electronic design automation(EDA) technology ’s the very high-speed integrated circuit hardware describe language(VHDL). VHDL has with the concrete hardware electric circuit has nothing todo with and designs the characteristic which the platform has nothing todo with, and has the good electric circuit behavior description and the system description ability, and in language legible and has orderliness the structurization design aspect, has displayed the formidable vitality and the application potential. Introduced based on the VHDL language design elevator controller, and has carried on the electric circuit synthesis and the simulation. This controller follows the direction first principle, provides 6 floors multi user to carry passengers to serve and to instruct the elevator the movement situation. Through testing the connection of the EDA case, realize the following main functions: The lift ‘s floor shows, the lift operation direction shows; closes prolonging the dog reports to the police; overloads reporting to the police fault alarm ,etc.. Key word : VHDL, controller, EDA, elevator 1引言 选题背景随着科学技术的发展、近年来,我国的电梯生产技术得到了迅速发展. 一些电梯厂也在不断改进设计、修改工艺。更新换代生产更新型的电梯, 电梯主要分为机械系统与控制系统两大部份,随着自动控制理论与微电子技术的发展,电梯的拖动方式与控制手段均发生了很大的变化,交流调速是当前电梯拖动的主要发展方向。目前电梯控制系统主要有三种控制方式: 继电路控制系统( 早期安装的电梯多位继电器控制系统)、 FPGA/CPLD 控制系统、微机控制系统。继电器控制系统由于故障率高、可靠性差、控制方式不灵活以及消耗功率大等缺点,目前已逐渐被淘汰。微机控制系统虽在智能控制方面