【作者】 潘跃峰；

【导师】 王平；

【作者基本信息】 浙江大学 ， 生物医学工程， 2007， 硕士

【摘要】 本文论述了一种水污染动态监测的电子舌分析仪的仪器结构设计以及上位机端软件的设计与实现。该仪器可以同时快速检测工业和生活污水中多种重金属离子(Zn、Cd、Pb、Cu、As、Hg、Fe)的浓度。首先介绍了重金属离子污染的现状以及目前常用的检测技术的研究进展。然后论述了介绍了仪器所采用的检测方法：电化学溶出伏安检测技术和光寻址电位传感器检测技术。在仪器的整体结构上，采用可分离式结构，即分为上位机部分、电子舌(即电极和检测电路)部分、泵和阀等水路部分以及溶液支持部分。这样有利于减小干扰保证仪器的稳定性，也有利于仪器的拆卸及维修。在水路的设计上，为3个测试系统设计互不相关的水路，可分别独立工作，减少影响。上位机端软件的设计上，在数据处理模块部分，论文针对噪声去除、平滑滤波、曲线拟合等多种算法做了叙述。采用自定义的文件格式(.tee)保存当前数据曲线。还使用BCB自带的控件实现了本地ACCESS数据库的建立和应用。实验结束时可以自动保存数据。利用WINDOWS消息驱动机制实现了多线程通讯。利用MSComm组件实现了RS232接口通讯，解决了上位机和下位机的通讯问题。论文还介绍了仪器的实际应用，通过大量实验，对仪器的性能指标进行了初步的测试和分析。结果说明，仪器不但操作简单，而且非常适合现场检测水中重金属元素。更多还原

【Abstract】 The paper introduces the design and application of the portable eTongue for realtime water pollution detection. The instrument can detect several trace metals (Zn, Cd,Pb, Cu, As, Hg, Fe) in water quickly.Firstly, the status of heavy metal pollution and the development of commondetection technology are introduced. The instrument adopts multiple measurementtechniques such as light-addressable potentiametric sensor and differential pulsestripping voltammetry.The instrument can be divided into four parts: the computer, the eTongue(including the electrodes and the electro circuit), the waterway (including the pumps,valves and pipes) and the system of supporting solution. The system features highreliability, high integrity, flexible configuration and wonderful extensibility. And thewaterway is designed to three sections, which are independent from each others.The software system is consisted of several modules including data processing,data communication, process control and data storage etc. The data processingmodule uses several methods such as outlier detection and correction, digitalfilters, curve correction, etc, to process the raw data and then store these results.The communication between the computer and the instrument is based onserial port RS232, and the message mechanism in Windows is used to implementthe communication among the modules in the software system.Finally, a lot of experiments are carried out to test the instrument. The resultsshow that the instrument, which consists of automatic sample injection and analysis,is not only brief but also quite suitable for measurement of trace heavy metals inwater.更多还原