智能二线制温度变送器的研究  

An Intelligent Two-Wire Temperature Transducer

作　　者：李迎[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150040

出　　处：《自动化技术与应用》2004年第6期67-70,共4页Techniques of Automation and Applications

摘　　要：本文介绍了一种基于Microchip的低功耗单片机PIC16F877新型智能二线制热电阻 (Pt10 0 0 )温度变送器的电路设计。文章分析了系统设计的理论依据和软硬件实现方案 ,采用温度补偿算法使补偿后的精度等级达到 0 .1%FS。该智能式变送器具有精度高、可靠性好、现场显示 ,生产调试方便等特点 ,是老式二线制温度变送器的理想替代产品 ,具有广泛的应用前景。A new two-wire temperature transducer with heat resistors (Pt1000) based on low-power single chip processor PIC16F877 is introduced in this paper.The software and hardware circuits of the system are also analyzed.By using a software algorithm of temperature compensation, the precision of the device is of 0.1%FS.It has advantages such as high accuracy, high reliability, field display, easy debugging and so on and it is an ideal product to replace the old one.

关 键 词：温度变送器 二线制 单片机 电路设计 系统设计 温度补偿算法 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]