海洋硝酸盐原位检测系统的设计与开发

发布时间：2018-11-01 15:11

【摘要】：海洋中的硝酸盐浓度是海洋环境检测时的重要参数,获取海水中硝酸盐的时空分布数据对海洋生态系统研究、海洋水质评估等具有非常重要的意义。国内的海洋硝酸盐检测主要依靠人工采样到实验室进行实验,达不到原位检测的需求；而购买国外的原位检测仪器需要花费大量财力,且仪器维护不方便。因此研制出具有我国自主知识产权的高精度、低功耗、高稳定性的原位硝酸盐检测仪器具有重要的意义。本论文在分析了国内外先进的硝酸盐检测仪器技术发展现状的基础上,综合运用光学、物理学、机械学、电子学以及计算机科学技术等各个学科知识,基于紫外分光光度法检测方法进行原位检测仪器的设计,包括机械光路、电子电路、算法以及软件界面,自主研制出基于紫外分光光度法的精度高、功耗低、稳定性好的硝酸盐原位检测装置。实验结果表明：海洋硝酸盐原位检测仪器的检测精度可达0.5μmol/1；线性度高达0.9988,检测线性范围为1-320μmol/1；稳定性好,均方差为0.009551。该系统具有很好的性能,达到同类硝酸盐原位检测仪的国际水平。本论文一共六章：第一章首先阐述了论文的研究背景以及意义,介绍了硝酸盐的常用检测方法,以及运用于水体的硝酸盐检测方法,最后提出了一套基于紫外分光光度法的海洋硝酸盐原位检测方案。第二章介绍了紫外分光光度法进行物质的光谱分析的原理,以及常见海洋物质的紫外光谱。第三章介绍了海洋硝酸盐原位检测系统的设计,包括系统总设计、机械设计、硬件设计等。第四章介绍了海洋硝酸盐原位检测系统软件的设计,包括软件需求说明、系统软件设计、界面设计、通讯设计、数据的算法设计等。第五章介绍了实验设计部分,以及实验结果分析等。第六章是总结与展望。
[Abstract]:The concentration of nitrate in the ocean is an important parameter in the detection of marine environment. It is very important to obtain the temporal and spatial distribution data of nitrate in sea water for the study of marine ecosystem and the evaluation of marine water quality. In China, the detection of marine nitrate mainly depends on manual sampling to the laboratory for experiments, which can not meet the demand of in-situ detection, but it takes a lot of money to purchase foreign in-situ detection instruments, and the maintenance of the instruments is not convenient. Therefore, it is of great significance to develop a high precision, low power consumption and high stability in situ nitrate detection instrument with independent intellectual property rights in China. On the basis of analyzing the development of advanced nitrate detection instruments at home and abroad, this paper synthetically applies the knowledge of optics, physics, mechanics, electronics and computer science and technology, etc. The design of in situ detection instrument based on ultraviolet spectrophotometry, including mechanical optical circuit, electronic circuit, algorithm and software interface, has been developed with high precision and low power consumption. A stable in-situ nitrate detection device. The experimental results show that the detection accuracy of the marine nitrate in situ detection instrument is as high as 0. 9988 渭 mol/1;, the linear range of detection is 1-320 渭 mol/1; and the mean square deviation is 0. 009551. The system has good performance and reaches the international level of the same kind of nitrate in situ detector. There are six chapters in this paper: the first chapter describes the research background and significance of the thesis, introduces the common detection methods of nitrate, and the nitrate detection method used in water body. Finally, a set of marine nitrate in situ detection scheme based on ultraviolet spectrophotometry is proposed. In the second chapter, the principle of ultraviolet spectrophotometry and the ultraviolet spectrum of common marine substances are introduced. The third chapter introduces the design of marine nitrate in situ detection system, including system design, mechanical design, hardware design and so on. The fourth chapter introduces the software design of marine nitrate in-situ detection system, including software requirement description, system software design, interface design, communication design, data algorithm design and so on. The fifth chapter introduces the design of the experiment and the analysis of the experimental results. The sixth chapter is the summary and prospect.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH766.5

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