自动化毕业设计论文基于单片机的智能加料控制系统

基于单片机的智能加料控制系统

摘要

本文主要通过对智能加料控制系统的研究，重点掌握自动控制利用控制装置使控制对象的某个参数自行按既定规则运行的理论和方法。其中涉及到多种单片机技术的应用和LED电路的连接使用。基于单片机的自动控制技术，能使常规的人工加料转化为根据人为设计的自动加料并且具备防干扰功能。文中重点论述了89C51单片机的性能及技术参数和引脚分布等情况，以及与之相关的扩展电路。通过一个电机控制两条生产线来提高控制系统和电机的效率，从而实现控制自动化。

关键词：自动控制;89C51单片机；扩展电路

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Abstract

In this paper, through the study of intelligent feed control system, focusing on automatic control theory and method to master control device makes use of a parameter control object itself according to the established rules of operation. Which is connected to a variety of chip technology involves the application and use of LED circuit. Microcontroller-based automatic control technology, enabling conventional artificial feeding into the design based on human and automatic feeding with anti-interference function. This paper focuses on the performance and technical parameters and pinout 89C51 microcontroller, etc., and the associated expansion of the circuit. To improve the efficiency of the motor control system and a motor control through two production lines in order to achieve control automation.

Key words:Automatic control; 89C51 microcontroller; expansion circuit

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目录

摘要 ........................................................................................................................................... 1 ABSTRACT .................................................................................................................................. 1 第一章 绪论 .............................................................................................................................. 5 1.1 题目来源 ............................................................................................................................. 5 1.2 自动加料机控制系统的工作原理和技术要求 ................................................................. 5 第二章 方案论证 .................................................................................................................... 6 2.1 单片机的选择 ..................................................................................................................... 6 2.2 物位传感器的选择 ............................................................................................................ 6 2.3 存储器扩展电路的选择 ..................................................................................................... 7 2.3.1 24C01扩展 ................................................................................................................. 7 2.4 LED显示电路选择 .............................................................................................................. 8 2.5 键盘输入电路 ..................................................................................................................... 9 2.5.1 独立式按键接口......................................................................................................... 9 第三章 自动加料机主电路 ..................................................................................................... 10 3.1 系统结构原理图 ............................................................................................................... 10 3.2 主机电路核心器件介绍 ................................................................................................... 10 3.2.1 AT89C51 功能特性概述........................................................................................... 10 3.2.2 时钟振荡器 .............................................................................................................. 11 3.2.3编程方法 ..................................................................................................................... 12 3.3 显示电路 ........................................................................................................................... 12 3.3.3 键盘接口 .................................................................................................................. 14

3.3.4 8255A芯片介绍 ...................................................................................................... 15

3.3.5 8255A功能 ............................................................................................................... 15 3.4 外部存储器扩展电路 ....................................................................................................... 16 3.5看门狗MAX813L电路 ........................................................................................................ 17 第四章 系统的抗干扰及可靠性 ............................................................................................ 19 第五章 软件设计 .................................................................................................................. 20 第六章 结论语与心得 ......................................................................................................... 21

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