智能仪器课程设计08.doc

内蒙古科技大学
智能仪表综合训练设计说明书
题目:基于DS18B20的测温仪设计
学生姓名:张超
学号:0867112337
专业:测控技术与仪器
班级:2008-3
指导教师:王志春副教授
基于DS18B20的测温仪设计
摘要:温度是一种基本的环境参数,人民的生活与环境的温度息息相关,在工业生产过程中需要实时测量温度,在农业生产中也离不开温度的测量。因此研究温度的测量方法和装置具有重要意义。测量温度的关键是温度传感器,温度传感器的发展经历了三个发展阶段:传统的分立式温度传感器、模拟集成温度传感器、智能集成温度传感器。目前,国际上新型温度传感器正从模拟式向数字式,集成化向智能化、网络化的方向飞速发展。本文所介绍的智能温度测量系统是基于DS18B20型数字式温度传感器,在89C52单片机的控制下,对环境温度进行实时控制的装置。该系统测量范围宽、测量精确度高,该系统可广泛适用于人民的日常生活和工、农业生产的温度测量。
关键词:DS18B20;测温仪
Solar thermometer design based on DS18B20
Temperature is one of the basic parameters of the environment, people's lives and the environment temperature is closely related to, in the process of industrial production needs of real-time measurement of temperature, in agricultural production can not be separated from the temperature measurement. The study of temperature measurement method and the device has important significance. Measurement of temperature is the key to the temperature sensor, the temperature sensor development experienced three stages of development: the traditional separation of temperature sensor, analog integrated temperature sensor, intelligent integrated temperature sensor. At present, the new temperature sensor from analog to digital, integrated to the intelligent, networked direction of rapid development. This paper introduces the intelligent temperature measuring system based on DS18B20 type digital temperature sensor, in the 89C51 under the control of a single-chip puter, the ambient temperature real-time control device. The system with wide measuring range, high measurement accuracy, the system can be widely used in people's daily life and industrial and agricultural production, temperature measurement.
Key words: DS18B20; thermometer
目录
前言 1
第一章设计任务及方案分析 3
设计目的和要求 3
3
3
系统的性能指标 4
第二章电路组成及工作原理 5
5
STC89C52单片机 8
74LS164移位寄存器 12
13
13
14
第三章软件设计 15
15
16
Ds18b20采集温度子程序 18
参考文献 20
附录A: 21
附录B: 22
前言