【作者】 张龙；

【导师】 杨江；

【作者基本信息】 浙江大学 ， 检测技术与自动化装置， 2012， 硕士

【摘要】 最近几年我国城市水源地突发性污染事件日益增加,自动监测站由于位置固定难以实时发现和跟踪污染,国内常用的移动监测设备多为人工驾驶的水质监测车和水质监测船,不仅成本高而且存在二次污染,现有的无人监测船存在体积大、携带不方便等缺点。低成本的便携式移动在线水质监测设备是一个急待解决的问题。本文在分析国内外移动在线水质监测系统应用现状和先进技术的基础上,设计了小型移动在线水质监测系统。该系统可用于水质污染事件的应急监测和跟踪,以及水源地水质的日常巡检,具有体积小、成本低、检测速度快、远程数据传输等优点。本文的主要内容如下：(1)介绍了国内外移动在线水质监测系统的发展状况、典型产品及其不足之处,分析了现有产品中所使用的先进技术。(2)完成了小型移动在线水质监测系统的整体设计。系统由采样模块、监测终端、监控中心和手持终端所组成。单个采样模块支持接入最多8路水质传感器,能实现水质快速检测、高精度采样和实时在线安全评价。采用无线数据通信和GPS定位的方法。(3)完成了系统各组成模块的硬件电路设计和软件设计,包括高精度采样电路和多通道水质传感器接口。(4)在监控中心服务器上编写了水质安全评价软件,能够根据移动监测系统提供的实时数据,实现对饮用水水源地的水质实时在线评价。本文的主要特色或创新点如下：(1)所设计的小型移动在线水质监测系统,具有成本低、体积小、便携性好和操作简便等优点,适用于对地表水源地进行移动监测以及实时跟踪突发性污染。(2)移动平台采用电子罗盘和GPS进行组合导航,不仅方便运动控制,同时也能进行自主导航。(3)采用快速响应的水质传感器,满足移动检测的需要。(4)采用基于水厂工艺的水质评价方法对水质采样数据进行实时评价,同时提供预警信息。更多还原

【Abstract】 In recent years, the sudden pollution incidents of urban source water in China have increased and they are hard to be detected and tracked in time by automatic monitoring stations because of their fixed positions. Besides these automatic monitoring stations, the commonly mobile monitoring equipments are water quality monitoring trucks or vessels which are manned drived, they need high cost and may bring secondary pollution. What’s more, some unmanned monitoring vessels have the shortcomings of large size and bad portability. Therefore, the low-cost and portable mobile online monitoring equipment for water quality is urgent to be developed.Based on the analysis of national and international mobile water quality monitoring system applications and their advanced techniques, a small mobile online water quality monitoring system was designed in this paper with the advantages of small size, low cost,fast detection and remote data transmission. It can be used for emergency monitoring and tracking of water pollution incidents, as well as the daily water quality inspection of the source water.The main contents of this paper are as follows.(1)The development, typical products and disadvantages of the national and international mobile water quality monitoring system were described, and the advanced techniques of the existing products were analyzed.(2) The small mobile water quality monitoring system was designed, it consists of the sampling module, monitoring terminal, monitoring center and handheld terminal and it can achieve rapid detection of water quality, high-precision water quality sampling and online evaluation. One sampling module supports the interface of 1 to 8 water quality sensors. The communication and positioning of this system was based on the wireless/GPS.(3) The hardware and software of the system had been completed, especially the high-precision sampling circuit and multi-channel water quality sensor interface.(4) The water quality evaluation software was finished in the monitoring center server, it could evaluate the source of drinking water based on the real time data which were provided by the mobile online monitoring system.The main innovations of this paper are as follows.(1) The designed small mobile online water quality monitoring system has some advantages such as small size, low cost, good portability and easy to be operated. It is suitable for mobile monitoring of the surface source water and real-time tracking of unexpected contamination.(2) The electronic compass and GPS were used for navigation, which are not only convenient for moving control, but also capable of autonomous navigation.(3) The water quality sensors with fast responses meet the needs of mobile testing.(4) The water quality evaluation method which is based on water plant process can provide real-time evaluation and early warning information based on the water quality sampling data.更多还原