毕业设计（论文）-基于单片机的多路温度采集系统设计.doc

ANYANG INSTITUTE OF TECHNOLOGY
本科毕业论文

基于单片机的多路温度采集系统设计
Based on Single Chip Multi-channel Temperature Acquisition System Design 
系(院)名称: 电子信息与电气工程系
专业班级: 04级自动化3班
学生姓名:
指导教师姓名:
指导教师职称: 讲师
2008 年 05月
基于单片机的多路温度采集系统设计
专业班级: 04级自动化3班学生姓名:
指导教师: 职称: 讲师
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MCS-51单片机为主要硬件,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,包括定时器初始化,串行口初始化和数据传输等程序。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。
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AT89C52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:MCS-51;DS18B20;温度采集;RS-232
Based on Single Chip Multi-channel Temperature Acquisition S
ystem 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 puter is it control convenient, simple, flexibility advantage such as being heavy to have not merely to control to go on to temperature e, 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 parison, the control,This design uses MCS-51
The monolithic integrated circuit is the 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 co