摘要： 单片机系统的开发应用给现代工业测控领域带来了一次新的技术革命，自动化、智能化均离不开单片机的应用。单片机是一种集CPU、RAM、ROM、I/O接口和中断系统等部分于一体的器件，只需要外加电源和晶振就可实现对数字信息的处理和控制。单片机由于其微小的体积和极低的成本，广泛的应用于家用电器、工业控制等领域中。
温度控制系统是利用下位机设置温度上下限和实时温度的采集，并将结果传输到上位机。以达到对温度的比较、控制。本设计用ICE 52仿真头和ME830目标板为主要硬件，设计了包括温度采集，温度显示，系统控制，串口通信等外围电路。而且对所设计电路给出了相应的软件设计，包括硬件初始化，LED与7SEG等的驱动和显示，蜂鸣器的设置，LED1602的显示灯。在温度测量部分采用具有“一线总线”接口的数字传感器DS18B20，实现单线多点数据的采集。8886
多点温度检测与控制系统是典型的集散式控制系统。由下位机、上位机、和通讯网络三部分组成。下位机是基于单片机AT89S52和DS18B20的高精度温度采集系统，功能是对温度的检测与输出控制。上、下位机之间通过RS-232总线构成网络系统。
关键词： ME830，DS18B20，温度采集
Multi-channel Temperature monitor design
Abstract: The development and application of MCU (Micro Control Unit) have made a great change in many fields of modern industrial detect and control. Adopt Single-Chip Microcomputer is it control convenient, simple, flexibility advantage such as being heavy to have not merely to control to go on to temperature to come, and can raise by technical indicator not to accuse of temperature by a large margin, thus can big improvement quality and the quantity of products. Because of the small scale, low price and high efficiency of MCU, it is widely used in home appliances and industrial control.
The temperature control system is uses in the lower position machine establishment temperature the lower limit, with real-time temperature gathering, transmits to on position machine. By achieves to the temperature comparison, the control，This design uses ICE 52 Emulator and the ME830 as main hardware .In order to realize design goal this design including temperature gathering, the temperature demonstrated that, the systems control, strung together periphery electric circuit and so on mouth correspondence. Moreover to design the electric circuit to produce the corresponding software design, including timer initialization, LED, 7SEG and so on mouth initialization and data transmission. The 1-Wire bus digital thermometer DS18B20 is used to measure temperature. It can realize the 1-Wire multi-point collection.
Several points of temperature examination and control system is typically concentrate-disperse system. It consists of up a machine, bottom a machine, and communication network. Bottom a machine is a high accuracy data collection system that bases on the microcontroller AT89S52 and the DS18B20 system. Its function is to temperature and output the control. The up machine and bottom machines constitute of network system, via RS-232 bus.
Key words: ME830，DS18B20，Temperature Acquisition
目录
第一章  绪论    6
1.1 开题依据    6
1.2课题设计目的    7
1.3国内外研究现状和发展趋势    7
第二章  课题分析    8
2.1课题介绍    8
2.2 课题的基本准备工作    9
2.3 安装Keil仿真软件    9
2.4 安装ICE52仿真驱动系统    10
2.5 安装USB驱动    11
第三章  ME830目标板上的硬件资源    13
3.1 设计的软件和硬件及其介绍    13
3.2 硬件原理图的介绍    14 AT89S52+DS18B20多路温度监控器的设计+电路图:http://www.751com.cn/zidonghua/lunwen_7414.html