智能型二线制温度变送器  

Study on intelligent two-wire temperature transducer

作　　者：牟晓光[1] 徐军[1] 袁丽英[1] 李宝林[2] 

机构地区：[1]哈尔滨理工大学计算机与控制学院,黑龙江哈尔滨150080 [2]齐齐哈尔造纸有限公司,黑龙江齐齐哈尔161005

出　　处：《哈尔滨商业大学学报（自然科学版）》2004年第4期472-475,478,共5页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：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(Pt1000)温度变送器的电路设计.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.结果表明: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.This paper has introduced new two-wire temperature transducer with heat resistors (Pt1000) based on low-power single chip processor PIC16F877 of Microchip . And also analysed the theory, software and hardware circuits of system . Using a software algorithm of temperature compensation in practical measurement, the precision degree can arrive 0.1%FS. This device has many advantages such as high accuracy, high reliability, field display, easy debugging and so on .So it is ideal product of replacement for old two-wire temperature transducer,with good prospect.

关 键 词：低功耗单片机 二线制 智能式变送器 高精度 温度补偿算法 电源管理 

分 类 号：TP212.11[自动化与计算机技术—检测技术与自动化装置]