高精度温度测量电路设计  

Design of a high-precision temperature measurement circuit

作　　者：刘孟德[1,2] 贺海靖[2] 杜立彬[2] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001 [2]山东省科学院海洋仪器仪表研究所,山东青岛266001

出　　处：《山东科学》2012年第2期72-75,共4页Shandong Science

摘　　要：针对海洋环境监测中广泛应用的铂电阻和热敏电阻温度传感器,设计了一种以恒流源激励的温度测量电路,解决了因传感器自加热和恒流源波动产生的测量误差。经现场测试,温度测量的精度、一致性都达到设计要求,满足海洋环境监测的实际应用需要。We design a high-precision temperature measurement circuit excited by a constant current source with RTD and thermistor commonly employed in ocean environment detection. We also reduce the measurement error caused by current variation and self-heating. Scene test shows that the circuit satisfies the requirement of ocean environment detection.

关 键 词：铂电阻 热敏电阻 AD7793 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]