用VHDL语言设计电梯控制器

石家庄经济学院数字逻辑课程设计报告

题目电梯控制器的设计

姓名meng hao

学号

班号 3 班

指导老师

成绩

2011年6月

目录

1. 课程设计目的···································································································································

2.设计任务

3.开发工具选择···································································································································3. 设计方案 ·········································································································································4．模块描述 ··········································································································································

5. VHDL实现·······································································································································

6. 调试仿真 ···········································································································································

7. 课程设计回顾总结 ······················································································································参考文献 ··········································································································································

1. 课程设计目的

1) 使学生更好地巩固和加深对基础知识的理解，学会设计中小型数字系统的方法，独立完成调试过程，增强

学生理论联系实际的能力，提高学生电路设计和分析的能力。

2) 通过实践教学引导学生在理论指导下有所创新，为后继专业课的学习和日后工程实践奠定基础。

2、设计要求

1)

综合应用课程中学到的理论知识，独立完成一个设计任务。 2) 根据所要完成的设计任务，采用硬件描述语言 VHDL 进行描述，依靠计算机，借助EDA 开发工具，实现系

统功能。

3) 整理设计报告及相关的文档（包括总体设计思想，设计说明，程序源代码，仿真结果图、设计总结等）。 3 . 设计任务

任务和要求：可使用拨键开关输入欲到达的楼层。要求有数码管显示当前楼层，目标楼层，并且可以输入三个目标楼层，按输入的顺序达到，达到时有开门指示灯。在电梯移动时，有相应的指示灯显示其方向。

注意：电梯经过一个楼层和在楼层停留应各自设定一个固定时间。

4．开发工具选择

quarters Ⅱ 5.1

5.设计方案

实验要求设计一个3层的电梯的梯控制器，采用状态机来实现，这样思路清晰，便于理解。可以分为10个状态，为“一楼”、“等待状态1”、 “等待状态2”、“等待状态3”、 “等待状态4”、 “开门”、“关门”、“上升”、“下降”、“停止”。各状态之间按需要转换。由状态机进程和信号指示灯进程一起控制。

输入由电梯外部的请求，电梯内部的请求，时钟信号组成。输出由指示灯和电梯位置组成。

6.模块描述

分为4各部分

人员输入模块为按键模块

电梯控制模块为电梯条件判断状态模块

信号灯指示模块为指示灯显示模块 电梯终端模块为电梯服务模块

7. VHDL 实现

代码分为实体，结构体两大块；

结构体中又分为电梯进程和指示灯进程；

电梯进程为10个状态机之间转换的代码；

指示灯进程为内外部请求指示灯的代码。

library ieee;

use ieee.std_logic_1164.all;

use ieee.std_logic_arith.all;

use ieee.std_logic_unsigned.all;

entity sandianti is

port(anclk:in std_logic; --按键时钟信号

ticlk:in std_logic; --电梯时钟信号

reset:in std_logic; --复位

fiup:in std_logic; --1楼外部上升请求

seup:in std_logic; --2楼外部上升请求

sedn:in std_logic; --2楼外部下降请求

thdn:in std_logic; --3楼外部下降请求

uplight:buffer std_logic_vector(3 downto 1);---上升请求指示灯

dnlight:buffer std_logic_vector(3 downto 1);---下降请求指示灯

yilou,erlou,sanlou:in std_logic;----停站请求

splight:buffer std_logic_vector(3 downto 1);--停站请求指示灯

weizhi:buffer integer range 1 to 3;---位置指示

door:out std_logic; ---门状态指示

updown:buffer std_logic);--上升下降状态指示

end sandianti;

architecture menghao of sandianti is

type lift_state is ----状态机

(lift1,dooropen,doorclose,wait1,wait2,wait3,wait4,up,down,stop); signal meng:lift_state;

signal clearup:std_logic; ----清除上升状态