基于光电传感技术的海水盐度计研究  

Research on seawater salinometer based on photoelectric sensor technology

作　　者：陈世哲[1] 曹乃锋[2] 赵勇[3] 胡开博[3] 

机构地区：[1]山东省科学院海洋仪器仪表研究所,山东青岛266001 [2]中国海洋大学工程学院,山东青岛266003 [3]清华大学自动化系,北京100084

出　　处：《光电子．激光》2009年第12期1622-1625,共4页Journal of Optoelectronics·Laser

基　　金：国家"863"计划资助项目(2007AA09Z102)

摘　　要：提出了基于位置敏感器件(PSD)的差动折射率测量方案,建立了数学模型,设计了传感探头结构,制作了原理样机。在反复实验的基础上,测定了盐度标定曲线,并对系统的稳定性和影响因素进行了测量,盐度检测的分辨率达到1.67‰,稳定性好于±1.25‰,温度和扰动引起的误差分别为0.038‰/℃和±2.58‰。对系统误差进行了分析,并提出了相应的解决办法。Under the elaborate survey of recent development of the seawater salinity measurement technology,we systematically proposed a measurement principle,based on differential refractive-index and PSD （Position Sensitive Device）,and built a mathematical model,designed the structure of sensing probe,produced a prototype.On the basis of numerous experimental data,we determined the salinity calibration curve,the system stability and interfering factors were also measured.Experimental results indicate the salinity resolution of 1.67‰ and stability error better than ±1.25‰,errors caused by temperature and Perturbation are 0.038‰/℃ and ±2.58‰.The results also showed the feasibility of system principle and structural design.Then,errors which could affect the system performance were discussed and analyzed in detail,and some improved methods were suggested.

关 键 词：海水盐度 光电检测 差动测量 位置敏感器件(PSD) 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]