智能化仪器及原理应用课程设计设计题目：专业班级：姓名：组员：指导老师：日期：DS18B20数字温度计的设计10自动化1班2012-11-26word格式-可编辑-感谢下载支持目录一、摘要·········································································································1二、方案论证···································································································2三、电路设计···································································································21、设备整机结构及硬件电路框图·····································································22、单片机的选择··························································································33、温度显示电路··························································································34、温度传感器·····························································································45、软件设计································································································56、系统所运用的功能介绍：···········································································8四、系统的调试及性能分析：··············································································8附件：DS18B20温度计C程序·············································································8一、摘要本设计的主要内容是应用单片机和温度传感器设计一个数字温度表，DS18B20是一种word格式-可编辑-感谢下载支持可组网的高精度数字温度传感器，由于其具有单总线的独特优点，可以使用户轻松地组建起传感器网络，并可使多点温度测量电路变得简单、可靠。本设计基于数字温度传感器DS18B20，以AT89C51片机为核心设计此测试系统，具有结构简单、测温精度高、稳定可靠的优点。可实现温度的实时检测和显示，本文给出了系统的硬件电路详细设计和软件设计方法，经过调试和实验验证，实现了预期的全部功能。二、方案论证方案一：由于本设计是测温电路，可以使用热敏电阻之类的器件利用其感温效应，在将随被测温度变化的电压或电流采集过来，进行A/D转换后，就可以用单片机进行数据的处理，在显示电路上，就可以将被测温度显示出来，这种设计需要用到A/D转换电路，感温电路比较麻烦。方案设计框图如下：方案二：考虑到用温度传感器，在单片机电路设计中，大多都是使用传感器，所以这是非常容易想到的，所以可以采用一只温度传感器DS18B20，此传感器，可以很容易直接读取被测温度值，进行转换，就可以满足设计要求。从以上两种方案，很容易看出，采用方案二，电路比较简单，软件设计也比较简单，故采用了方案二。热敏电...
