基于单片机的DS18B20温度传感器测温系统设计_毕业设计.doc

河南科技学院 HENANKEJIXUEYUAN  毕 业 论 文（设 计） 中文题目:基于单片机的DS18B20温度传感器测温系统设计 英文题目:A Design of the DS18B20 Temperature Test System Based on MCU PAGE II 基于单片机的DS18B20温度传感器测温系统设计 摘要 随着社会的进步和工业技术的发展，人们越来越重视温度因素，许多产品对温度范围要求严格，而目前市场上普遍存在的温度检测仪器大都是单点测量，同时有温度传递不及时、精度不够的缺点，不利于工业控制者根据温度变化及时作出决定。在这样的形式下，开发一种能够同时测量多点，并且实时性高、精度高，能够综合处理多点温度信息的测量系统就很有必要。 本课题以AT89C52单片机系统为核心，能对多点温度进行实时巡检。DS18B20是一种可组网的高精度数字式温度传感器，由于其具有单总线的独特优点，可以使用户轻松的组建起传感器网络，并可使多点温度测量电路变得简单、可靠。本文结合实际使用经验，介绍了DS18B20数字温度传感器在单片机下的硬件连接及软件编程，并给出了软件流程图。 关键词：DS18B20 多点测温 单片机 LCD1602 Abstract As the industry and the society developing, the temperature becomes more and more important and a lot of products are sensitive to temperature. However, temperature measuring apparatus in the market now only can check and measure the temperature of one point, at the same time, the temperature information is not real time and the precision is low. It takes a great of troubles for the industry-controllers to make decision .In this situation, design and implement one applicable system which can watch measure and control the temperature and the measuring results is real time and the precision is great is more essential. In order to meeting this application, this paper talk about The Multiple-Point’s temperature Measuring System. This system based on single chip computer, can inspect and control multiple temperatures in real time.?As a kind of high-accuracy digital net temperature sensor，DS18 B20 can be used building a sensor net easily. It can also make the net simple and reliable with its special 1-wire interface .This paper introduces the application of DS18B20 with single chip processor. Key words：DS18B20 Multi-point temperature MCU LCD1602 目录 TOC \o 1-2 \h \z \u 摘要 h I Abstract h II 第一章? 绪论 h 1 1.1 课题背景 h 1 1.2 本课题研究意义 h 2 1.3 本课题的任务 h 2 1.4 系统整体目标 h 3 第二章 方案论证比较与选择 h 3 2.1 引言 h 3 2.2 方案设计 h 3 2.3 方案的比较与选择 h 4 第三章 硬件设计 h 4 3.1 STC89C52单片机简