长 春 工 业 大 学
毕业设计、毕业论文
题 目 电冰箱温度测控系统 学 院 电气与电子工程学院 专业班级 自动化 080302 指导教师 王 霆 姓 名 徐井超
2012年 6 月 11 日
摘 要
近年来，随着计算机在社会领域的渗透，单片机的应用正在不断的走向深入，同时带动传统控制检测日新月异不断更新。在实时监测和自动控制的单片机应用系统中，单片机往往是作为一个核心部件来使用，以作完善。
电冰箱的温度控制系统是利用温度传感器AD590来采集电冰箱的冷冻室和冷藏室的温度。通过高级微控制器AT89C51单片机进行数字信号处理，从而达到智能控制的目的。本系统可实现电冰箱冷藏室和冷冻室的温度设置、电冰箱手动除霜等功能。
本文在第一章介绍了电冰箱的发展状况及背景，第二章论述了本系统控制所要求的技术参数和各种元器件的选择论证，第三章给出了各种系统的硬件电路设计，第四章阐述了本控制系统的软件部分。
通过对电冰箱系统的分析与改进，基本实现了电冰箱的温度控制，且使电冰箱能根据使用条件的变化迅速合理的调节制冷量，并且节能效果良好。
关键字 温度控制系统 AD590 AT89C51
I
Temperature Measurement and Control System
Abstract
In recent years, with the development of computer penetration in the social sphere, SCM applications are constantly deepening, led the traditional control test change rapidly and continuously updated. In real-time monitoring and automatic control of the SCM application system, the microcontroller is often used as a core component, to make perfect.
Refrigerator temperature control system is the use of temperature sensor AD590 to collect the refrigerator freezing chamber and a refrigerating chamber temperature. Through advanced microcontroller SCM AT89C51digital signal processing,
so as to achieve the purpose of intelligent control. This system may realize the electric refrigerator refrigerating chamber and the freezing chamber of the refrigerator temperature setting, manual defrost function.
The first chapter introduces the development and background of the refrigerator, the second chapter discusses the system control the required technical parameters and various components of the selection and demonstration, the third chapter gives a variety of system hardware circuit design, the fourth chapter elaborated the control system software part.
Based on the analysis and improvement of the refrigeration system, the basic realization of the refrigerator temperature control, and the refrigerator to conditions change rapidly and reasonable regulation of cooling capacity, and good energy-saving effect.
Key word temperature control system AD590 AT89C51
II