本论文概述了温控器的发展及基本原理，介绍了温度传感器的原理及特性。分析了DS18B20温度传感器的优劣。在此基础上描述了家庭集中空调控制系统研制的理论基础，温度采集等部分的电路设计，并对测温家庭集中空调控制系统的一些主要参数进行了讨论。同时在介绍温度控制家庭集中空调控制系统功能的基础上，提出了家庭集中空调控制系统的总体构成。针对测温家庭集中空调控制系统温度采集、接收、处理、显示部分的总体设计方案进行了论证，进一步介绍了单片机在家庭集中空调控制系统中的应用，分析了家庭集中空调控制系统各部分的硬件及软件实现。利用Proteus7.6进行了可行性的仿真，利用单片机开发板验证在实际电路中能起到的效果。试验证明，这套温度控制器具有较强的可操作性，很好的可拓展性，控制简单方便。

关键词：DS18B20   单片机  温度控制  1602液晶显示

In the automatic control area,temperature monitoring and controling have a very important position. The temperature monitoring system has a wildly applying in industry, agriculture, science reasearching and daily life of people. Therefore, the number of applying of the temperature monitoring comes first of all kinds of sensor. At present, the temperature monitoring is transformed from analog type to digital integrated type with a very fast speed.

This paper introduces the developing and fundamental of the temperature monitoring, including the character of this kind of sensor. It also analyses the advantage and disadvantage of the temperature monitoring which named DS18B20. On that basis, the paper also has a further analysis of the theoretical basis of the system developing and the circuit design of temperature monitoring. Besides, some discussions about the important parameters also took on desk. At the same time, the auther of this paper also puts forward the composition of totality about this system, which including the different function of the thermometer system. Then a detailed analysis which is about the applying of Microcontrollers and the applying of different parts made by different hardwares and softwares  in the system. In order to check the maneuverability and the expansibility of the Microcontrollers system, the auther used Proteus 7.6 to do the testing and got a pretty good result.

This system puts the temperature measured in normal situation as a confirm condition. All design and selection of component is also based on this suppose.

keywords: DS18B20, Microcontrollers, Temeperature Controling, 1602 Liquid Crystal Display