(本科毕业论文设计)基于单片机的自动售货机的系统设计

本科毕业论文（设计）基于单片机的自动售货机的系统设计

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基于单片机的自动售货机的系统设计

摘 要

本文设计了一种以STC89C52单片机为核心，采用集中控制方式实现了对自动售货机全过程的自动控制。本系统选择3×3矩阵式键盘作为控制按键，实现货物的掉出、退币以及货币数的LCD显示等功能。

关键词： STC89C52，自动售货机，键盘控制，LCD显示

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Design of automatic system of vending machine based on

Microcontroller

Abstract

This paper introduces a design of STC89C52 microcontroller as the core, adopts the centralized control method to realize the automatic control of the whole process of automatic vending machine. In this system, 3 * 3 matrix keyboard as the control button, realize the goods out of, the coin and currency number LCD display and other functions.

Keywords：STC89C52, vending machine, keyboard control, LCD display

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目 录

1 绪 论 ............................................................................................................................................. 1 2 自动售货机系统总体设计方案 ........................................................................................... 2 2.1 工作原理 ....................................................................................................................................... 2 2.2 项目要求 ....................................................................................................................................... 3 2.2.1 硬件设计要求 ........................................................................................................................ 3 2.2.2 软件设计要求 ........................................................................................................................ 4 3 控制系统的硬件电路设计 ...................................................................................................... 5 3.1 硬件设计概述 ............................................................................................................................ 5 3.2 微控制器 ....................................................................................................................................... 5 3.3 货币识别系统 ............................................................................................................................ 6 3.3 LCD显示系统模块 .................................................................................................................. 8 3.4 提示程序模块 ............................................................................................................................ 9 4 控制系统的软件设计 .............................................................................................................. 10 4.1软件设计概述............................................................................................................................ 10 4.2 主程序 .......................................................................................................................................... 10 4.3 键盘程序设计 .......................................................................................................................... 12 4.4 字符型液晶显示模块程序设计 ..................................................................................... 13 4.5 提示模块程序设计 ................................................................................................................ 16 5 结 论 ........................................................................................................................................... 18 致 谢 ................................................................................................................................................. 19 参考文献 .............................................................................................................................................. 20 附 录1 主函数程序 ................................................................................ 错误！未定义书签。 附 录2 TC1602AL显示程序............................................................. 错误！未定义书签。 附 录3 提示程序 ..................................................................................... 错误！未定义书签。 附 录4 总原理图 ..................................................................................... 错误！未定义书签。

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