投弃式温深测量仪高精度测温电路设计  

Design of high-accuracy temperature measurement circuit of an expendable bathythermograph

作　　者：雷卓[1] 贺海靖[1] 曲君乐[1] 刘杰[1] 

机构地区：[1]山东省海洋环境监测技术重点实验室,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》2014年第4期8-11,共4页Shandong Science

基　　金：国家高技术研究发展计划(863计划)(2012AA091904)

摘　　要：为提高投弃式温度深度测量仪(XBT)的测温精度,本文利用电桥测温的方法设计了高精度测温电路,提出了新的校准方法,并应用软硬件结合设计了可靠的入水检测模块。海试结果表明,该XBT测量的温度剖面与标准CTD剖面曲线相似度在0.9以上,测温平均误差小于0.2℃,在允许误差范围内,测温精度达到预期目标。This paper devises a high-accuracy temperature measurement circuit with a temperature measurement bridge to improve temperature measurement accuracy of an expendable bathythermograph （XBT）.A new calibration method is also presented.We further design a reliable water immersion detection module combined with software and hardware.Ocean experiment results indicate that the temperature curve measured by XBT has more than ninety percent similarity degree with standard CTD,less than 0.2 ℃ for average temperature measurement error.This is in the range of allowed error,so temperature measurement accuracy attains expected values.

关 键 词：投弃式温深仪 测温精度 入水检测 

分 类 号：P715.5[天文地球—海洋科学]