毕业设计(论文)-基于单片机的激光器温度控制系统设计

哈尔滨理工大学学士学位论文

- I -

激光器温度控制设计

摘要

温度是日常生活中无时不在的物理量，温度的控制在各个领域都有积极的意义。很多行业中都有大量的用电加热设备，如用于热处理的加热炉，用于融化金属的坩锅电阻炉及各种不同用途的温度箱等，采用单片机对它们进行控制不仅具有控制方便、简单、灵活性大等特点，而且还可以大幅度提高被控温度的技术指标，从而能够大大提高产品的质量。因此，智能化温度控制技术正被广泛地采用

本文主要从硬件和软件两方面介绍了绿光激光器的温度控制系统的设计思路，简单说明如何实现对激光器温度的控制，并对硬件原理图和程序框图作了简洁的描述。还介绍了在激光器温度控制系统的软硬件设计中的一些主要技术关键环节,该系统主要以MCS-51单片机为核心,由温度检测电路, 显示电路, 控制电路等构成。

用MCS-51单片机设计的激光器温度检测电路是本次设计的主要内容，是整个单片机温度控制系统设计中不可缺少的一部分，该系统对温度进行了实时采集与检测。通过温度传感器实现对激光器的温度采集，通过七段数码管来显示激光器的温度，通过小型风机以及加热器来控制激光器的温度的升降，本设计介绍的激光器温度自动控制系统的主要内容包括：系统方案、元器件选择、系统理论分析、硬件设计、软件设计、系统调试及主要技术性能参数。

关键词 单片机；温度传感器；激光器；温度控制

哈尔滨理工大学学士学位论文

- II -

The Design of Temperature Control For Laser

Component

Abstract

The temperature is constantly in the daily life of physical and temperature controls

in various fields have a positive meaning. A lot of businesses have a lot of power

heating equipment, such as that used for the heat treatment furnace, for melting metal

crucible resistance heaters and the various uses of temperature bins, SCM using their

right to control not only easy to control, simple, such as the characteristics of

flexibility, but can also significantly increase the temperature was charged with the

technical indicators, which can greatly enhance the quality of the products. Therefore,

intelligent temperature control technology is being widely adopted

The design of laser component’s temperature control system is introduced from

hardware and software, and simply explains how to achieve the temperature control.

The hardware principle and software case fig are described. Some important

techniques in a design scheme of the hardware and the software of the laser

component’s temperature control by single-chip microcomputer are introduced. The

system mostly takes 8051 single-chip microcomputer as a core， it is structured by

temperature testing circuit, display circuit, control circuit and so on.

The main content of this design is temperature testing circuit that uses AT89C51

single-chip microcomputer .It is a part of the whole design that cannot be lacked. The

system is used to collect and control laser component’s temperature in real time.

Through the led to display the number of the laser component. The temperature

automatic control system is based on single-chip microcomputer is described in the

article including system scheme，parts of an apparatus choice, theoretical analysis，the

design of hardware and software, system testing，and the main technical performance

parameters．

Keywords microcontroller; temperature sensor; laser component; temperature

control

哈尔滨理工大学学士学位论文

目录

摘要…… ............................................................................................................... I

Abstract ............................................................................................................... II

第1章 绪论 ........................................................................................................ 1

1.1 课题研究的目的与意义 ........................................................................... 1

1.2国内外文献综述 ........................................................................................ 1

1.3论文研究内容 ............................................................................................ 2

第2章 总体方案 ................................................................................................ 3

2.1 基本设计思路 ........................................................................................... 3

2.2 具体设计考虑 ........................................................................................... 3

2.2.1 电路的基本设计方案 ........................................................................ 3

2.2.2 各器件的功能 .................................................................................... 4

2.3 本章小结 ................................................................................................... 4

第3章 硬件设计 ................................................................................................ 5

3.1 单片机的选取 ........................................................................................... 5

3.1.1 AT89C51的主要特性 ........................................................................ 6

3.1.2 AT89C51的引脚功能 ........................................................................ 7

3.2 传感器的选取 ........................................................................................... 9

3.2.1 DS18B20的性能特点 ........................................................................ 9

3.2.2 DS18B20内部结构 .......................................................................... 10

3.2.3 DS18B20的工作原理 ...................................................................... 11