| 基于表层温盐传感器的标定分析 |
| |
| 引用本文： | 孙成龙,魏玉超,冯林强,徐俊臣.基于表层温盐传感器的标定分析[J].海洋技术,2015,34(1):100-105. |
| |
| 作者姓名： | 孙成龙 魏玉超 冯林强 徐俊臣 |
| |
| 作者单位： | 国家海洋技术中心,天津,300111 |
| |
| 基金项目： | 2013年海洋动力环境观测仪器设备综合测试平台技术研究与应用示范 |
| |
| 摘 要： | 感应式温盐传感器基于电导率法测盐,可以实现现场测量与实时测量。测量盐度时需要首先计算海水温度、海水电导率和海水压力,表层感应式温盐传感器对压力量不予考虑,温度、电导率的精度却直接关系到盐度测量结果的准确度,因此使用传感器前必须进行温度和盐度的标定。分析了温盐传感器的工作原理,设计温度、电导率的标定校准步骤,包括回归曲线的选择和回归方程系数的计算,其中温度、电导率和温度补偿的标定回归曲线采用多项式形式,用实验室高精度盐度计和铂电阻温度仪测得5~7组数据,然后对多项式最小二乘法回归,电导率回归过程中由温度和盐度求电导率用到了二分法,最后论述了标定回归方程的误差范围。
|
| 关 键 词： | 温盐传感器 电导率法 标定 最小二乘法 回归方程 |
Analysis on the Calibrating Methods Based on Surface Temperature and Salinity Sensors |
| |
| SUN Cheng-long,WEI Yu-chao,FENG Lin-qiang,XU Jun-chen.Analysis on the Calibrating Methods Based on Surface Temperature and Salinity Sensors[J].Ocean Technology,2015,34(1):100-105. |
| |
| Authors: | SUN Cheng-long WEI Yu-chao FENG Lin-qiang XU Jun-chen |
| |
| Abstract: | The inductive temperature and salinity sensor measures salinity based on the conductance method and has the advantage of real-time field measuring. Seawater temperature, conductance and pressure need to be determined before measuring the salinity. When using the surface inductive temperature and salinity sensor, the pressure value needs not to be taken into account, and the precisions of temperature and conductance directly determine the accuracy of salinity measuring, so calibrating temperature and salinity is necessary before using the sensor. This paper analyzes the operational principle of the sensor and designs the calibrating process, including the regression equation selection and coefficient calculation. The regression equations of temperature, conductance and temperature compensation are in multinomial format, the coefficients are calculated with the least square method using 5 to 7 groups of experiment data from high-precision salimeter and platinum resistance thermometer, and the regression of conductance is calculated with the dichotomy method in which conductance is derived with temperature and salinity. Finally, a series of experiments demonstrate the error range of calibrating regression equation. |
| |
| Keywords: | temperature and salinity sensor conductance method calibration least square method regression equation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《海洋技术》浏览原始摘要信息 |
| 点击此处可从《海洋技术》下载免费的PDF全文 |
|
