基于K型热电偶的数字式测温仪设计  

Design of Digital Thermometric Instrument Based on K-thermocouple

作　　者：梁波[1] 何小刚[1] 

机构地区：[1]太原理工大学信息工程学院,山西太原030024

出　　处：《机械工程与自动化》2012年第3期117-118,共2页Mechanical Engineering & Automation

摘　　要：使用K型热电偶作为温度测量传感器,根据热电偶的冷端温度补偿设计制作数字式智能测温仪。把热电偶传来的信号进行放大及线性化处理,并通过矫正得到被测点的温度值。该温控器测温范围为-50℃～1 000℃,具有硬件电路简单、精度高、成本低、人机界面友好等优点。In this paper, a digital thermometric instrument based on K-thermocouple was designed,which adopted thermocouple cold junction compensation technique. The signal from thermocouple was magnified, linearized and rectified. The measure range of the thermometric instrument is from -50 ℃ to 1 000 ℃, which is of many advantages, such as simple circuit, high precision and low cost.

关 键 词：数字式测温仪 K型热电偶 冷端温度补偿 

分 类 号：TH811[机械工程—仪器科学与技术] TP273[机械工程—精密仪器及机械]