数字温度传感器在热电偶冷端补偿中的应用  

Application of a digital temperature sensor in the cold terminal compensation of thermocouple

作　　者：凌振宝[1] 王君[1] 朱凯光[1] 张瑞鹏[1] 

机构地区：[1]吉林大学电子科学与工程学院,吉林长春130026

出　　处：《传感器技术》2003年第6期45-46,共2页Journal of Transducer Technology

摘　　要：介绍了热电偶冷端补偿的原理和方法以及DS18B20数字式温度传感器的工作原理和特点,提出了用DS18B20实现热电偶冷端补偿的方法,解决了传统热电偶冷端温度补偿的型号匹配,提高了测量准确度,简化了补偿电路。The principle and method of the cold terminal compe ns ation of thermocouple is introduced.Basing on the principle and characteristic o f DS18B20 digital temperature sensor,the method of the cold terminal compensatio n of thermocouple using DS18B20 is proposed.It solves the traditional problem of type match,meanwhile it improves the measurement accuracy and simplifies the co mpensation circuit.Key words:?digital tempera ture sensor; thermocouple; cold terminal compensation 

关 键 词：数字温度传感器 热电偶 冷端补偿 应用 DSl8B20 工作原理 

分 类 号：TH811[机械工程—仪器科学与技术] TP212.11[机械工程—精密仪器及机械]