高精度温度测量系统的设计  

Design of High Precision Temperature Measurement System

作　　者：郭海斌[1] 李艾华[1] 朱政伟[1] 

机构地区：[1]第二炮兵工程学院研究生3队,陕西西安710025

出　　处：《兵工自动化》2007年第7期76-77,85,共3页Ordnance Industry Automation

摘　　要：温度补偿和测量系统,由DS1820温度传感器和AT89C2051单片机组成。系统主机控制DS1820完成温度转换,每次读写前均对DS1820进行复位和预定操作。系统程序完成对DS1820调用中断管理、测量温度值的计算和显示等。复位要求主CPU将数据线下拉500,然后释放。DS1820收到信号后等待16～60μs后,再发出低脉冲。主CPU收到此信号后复位成功,才对DS1820进行操作。The temperature compensation and measurement system consists of DS1820 temperature sensor and AT89C2051 SCM. The host computer controls DS1820 to realize temperature transition and carries out restoration and schedule operation of DS1820 before read and write. The system program carries out calling intermit management for DS1820, calculating and displaying measurement temperature. When restoring, the host CPU draws data line to 500 and releases. After receiving signal, DS1820 will wait 16-60μs to generate low pulse. When the host CPU receives low pulse signal, the restoration is realized, then DS 1820 is carried out.

关 键 词：温度测量系统 AT89C2051单片机 DS1820温度传感器 

分 类 号：TP212.11[自动化与计算机技术—检测技术与自动化装置]