基于单片机的多路温度测控系统设计毕业论文.docx

基于单片机的多路温度测控系统设计 摘要  随着社会的发展，温度的测量及控制变得越来越重要，温度是生产过程和科学 实验中普遍而且重要的物理参数。本文利用单片机结合传感器技术而开发设计了这一多 路温度监控系统。本文详细地讲述了基于 AT89S52 单片机和温度传感器 DS18B20 的温 度监控系统的设计方案与软硬件实现方案。温度采集采用数字温度传感器 DS18B20 采 集环境温度，采集到的温度通过 LCD1602 液晶显示器显示温度数据，数据显示精度达 到 0.1°，通过按键可以 1℃的步进改变温度设定值，设置温度的上下限。当温度低于设 定的下限温度或者高于设定的上限温度时蜂鸣器发声和 LED 发光报警。本文设计出了 系统总体框架，电路图及程序，经过调试并在硬件平台上实现了所设计的功能。 关键词 单片机 多路温度测量 温度控制  DS18B20 温度传感器 word 文档 可自由复制编辑 temperature detecting system design Based on MCU Abstract  With the society’s development, control and measuringemperatureis becoming more and more important as temperature is an general and signal physical parameter. This article exploits and designs a temperature monitoring system through the technology of combined with sensor. It describes the design achieving scheme of temperature monitoring system basing on AT89S52 and temperature sensor DS18B20. device takes use of digital temperature sensor DS18B20. The main from shows the figure through LCD1602, and change the set value of temperature by 1 ℃ via key to set the bound. When the actual temperature value is lower than the lower limit or higher than the upper limit, buzzer sounds with LED flashes. The essay gives a general fame work of the system, circuit diagram and procedure, and after debugging it achieves all designed functions on hardware platform. Keywords  MCU, temperature monitoring system,  temperature detection ，  temperature sensorDS18B20, 目录 word 文档 可自由复制编辑 1 引言 ........................................................................................................................................ 5 2  概述 ...................................................................................................................................... 6 2．1 2．2 2．3  课题背景与研究意义 .............................................. 6 系统设计要求 .................................................... 6 系统设计方案 .................................................... 7 2.3.1 2.3.2  系统设计方案论证 ............................................ 7