水质残留物浓度检测方法的研究

发布时间：2018-03-06 06:52

本文选题：水质检测　切入点：朗伯-比尔定律　出处：《华北水利水电大学》2016年硕士论文　论文类型：学位论文

【摘要】：水是人类赖以生存的宝贵资源,水质安全关乎国运民生。我国是个严重缺水的国家,近年来,我国人口急剧增加,伴随着工业化进程推进,大量废水被排放到江河湖海中。随着污染的加剧,水体中污染物残留物种类及浓度逐渐增长,严重威胁到人类健康。常规水质检测方法在检测精度,测试参数范围等方面已不能满足越来越高的要求。随着光学、电子等技术的发展,越来越多水质检测方法被提出并应用到水体检测产品中。目前,水质检测仪器所采用检测方法还存在一些缺点,不能快速检测水体中化学成分的浓度且仪器结构复杂。本研究在水质检测仪器智能化和小型化的发展趋势下,对现有检测技术方法进行研究,提出利用颜色传感器及快速测试管进行溶液浓度检测的新方法,设计了一套水质检测系统对溶液颜色进行检测,研究溶液颜色与浓度的变化关系。经实际测试,溶液颜色检测结果一致性好,测试参数随浓度呈线性变化趋势,证实了该检测方法的正确性。利用该方法建立颜色与浓度关系的数据库,满足多种参数测试要求。论文提出基于朗伯-比尔定律的光学水质快速检测技术方案,实现仪器快速、小型、多参数技术要求。为了实现系统设计目标,提出以白光LED作为光源,全光谱色度分析方法的快速检测技术方案,针对水体中存在的多种化学物质进行检测。首先对水质检测仪器原理和结构进行分析,提出了溶液浓度测试的总体方案。在确定测试方案基础上利用模块化设计思路进行硬件设计,结合新型颜色传感器TCS3200和STM32F107单片机对KBC快速测试管内溶液进行色度检测。最后,对单片机进行编程,编写人机界面显示程序及其他功能模块驱动程序。经测试,该方法对水中多种残留物检测快速准确。
[Abstract]:Water is a precious resource on which human beings depend for survival, and the safety of water quality is related to the people's livelihood of the country. China is a country with serious water shortage. In recent years, the population of our country has increased dramatically, with the advancement of industrialization. A large amount of waste water is discharged into rivers, lakes and seas. With the increase of pollution, the types and concentrations of residual pollutants in water gradually increase, which seriously threatens human health. With the development of optics, electronics and other technologies, more and more water quality detection methods have been put forward and applied to water detection products. There are still some shortcomings in the methods used in water quality detection instruments, such as the concentration of chemical components in water can not be detected quickly and the structure of the instruments is complex. In this paper, the development trend of intelligent and miniaturized water quality detection instruments is presented. A new method of solution concentration detection by using color sensor and fast test tube is put forward, and a water quality detection system is designed to detect the color of solution. The relationship between the color and the concentration of the solution is studied. The results of the actual test show that the results of the color detection of the solution are in good agreement, and the testing parameters show a linear trend with the concentration of the solution. The correctness of the method is verified. The database of the relationship between color and concentration is established by using this method, which meets the requirements of various parameter tests. In this paper, an optical water quality rapid detection scheme based on Lamber-Beer 's law is proposed, which can realize the rapid measurement of water quality. Small, multi-parameter technical requirements. In order to realize the design goal of the system, a rapid detection scheme with white LED as light source and full spectral chromaticity analysis method is proposed. First of all, the principle and structure of the water quality detection instrument are analyzed. The overall scheme of solution concentration measurement is put forward. On the basis of determining the test scheme, the hardware is designed by modularization, and the colorimetric measurement of the solution in the KBC tube is carried out by combining the new color sensor TCS3200 and STM32F107 microcontroller. Finally, The single-chip microcomputer is programmed, the man-machine interface display program and other function module driver are compiled. The test results show that the method is fast and accurate for detecting various residues in water.
【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：R123.1

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