【作者】 陈秀宏；

【导师】 钱东平； 杨世凤；

【作者基本信息】 河北农业大学 ， 农业机械化工程， 2006， 硕士

【摘要】 水是人类最宝贵的自然资源之一。随着生产的发展以及人口的增长,水的需求量在急剧增加。地下水是可直接利用的淡水资源的重要组成部分,具有水质好、分布广、供水量稳定、可持续利用的时间长等特点。地下水已成为人民生活和生产的最重要的水源,是我国可持续发展的一个重要制约因素。近年来降雨量的减少,严重影响着地下水的补给,一些地区盲目的超量开采地下水。由于地下水的长期过量开采,导致了一系列生态环境问题。 为了控制并合理开发地下水资源,必须要对地下水进行实时监测。地下水监测主要是对地下水的水位、水温等长期定时的观测,以便掌握其规律,为合理开采、科学调节和管理地下水提供科学依据。以往,我国对地下水的监测绝大部分以人工观测为主,这使得部分监测资料缺乏可靠性,监测数据也得不到及时处理,制约了地下水监测工作的深入开展。随着社会的不断发展,提高地下水监测数据的准确性和及时性,加强地下水自动监测系统的建设,实现由人工观测向自动监测的转变显得更加重要。 地下水监测的数据采集工作全部都是在野外进行的,所以需要性能出色,移动性好,待机时间长的电脑。本系统采用携带方便的掌上电脑作为数据采集的上位机,采用监测仪作为下位机,掌上电脑具有体积小、功耗低、操作方便、功能强大等特点。本系统的软件开发使用了目前掌上电脑的主流操作系统Windows Mobile,软件开发环境Visual Studio.NET 2003,并使用基于.NET框架的C#作为开发语言,系统实现了数据采集、文件管理,分析显示等功能。并采用RS232串行通讯作为掌上电脑与下位机监测仪的通讯接口,利用多线程设计来完成串行端口的通讯。系统采用标准化、基于文本的XML方式存储数据。 本课题研究是针对地下水监测应用中的实际问题,由于系统充分考虑了掌上电脑的特点,采用简洁的窗口界面,操作简单,非常适合于野外的现场工作。结果证明该系统便于操作,工作可靠,测量误差满足要求,且造价低廉,运行稳定。更多还原

【Abstract】 Water is one of mankind precious natural resources. With the development of production and the increase of population, the quantity of water demand is increasing rapidly. Groundwater is an important part of freshwater resources that can directly utilized by mankind, with many advantages such as good quality, abroad distribution, stable water supply amount and long time of the sustainable use and so on. Groundwater plays an important role in people’s life and production, in the meantime it is also a restrict factor on our country’s sustainable development. In recent years the reduction of rainfall amount seriously influence supply of groundwater, some local blindly and excess exploit groundwater, Due to long-term excess exploitation groundwater, a series of ecological environment problems have been caused.In order to control and the reasonable development ground water resources, real-time monitoring must be carried on to groundwater. Groundwater monitoring is mainly the observation of long-term timing to level and temperature of groundwater, in order to grasp its law and offer scientific basis for rational exploitation, scientific regulating and management of groundwater resources. In the past, groundwater monitoring of our country was mostly by manual observation. So some partial monitoring data lack reliability, and the monitoring data also could not be processed in time. This has restricted the in-depth development of groundwater monitoring. With the constant development of society, it is more important to enhance the accuracy and timeliness of groundwater monitoring data, strengthen the construction of groundwater auto-monitoring system, and realize the transition from manual observation to auto-monitoring.Because data acquisition of groundwater monitoring is completely carried on in the field, it needs computer of excellent performance, good mobility and working for a long time. The system adopted the portable Pocket PC as host computer of data acquiring and monitor is adopted as lower machine, Pocket PC has the characteristic of small size, low power dissipation, convenient operations, and powerful function and so on. This system software development has used Windows Mobile, which was prevalent operating system of Pocket PC now, software development environment Visual Studio.NET 2003, and C# as the developing language based on .NET framework, and it has realized the function of data acquiring, file management, and analysis and displaying. It has adopted serial port RS232 as the communication interface between smart device and lower machine and utilizedmulti-threading to achieve serial port communication. The system adopted the standardized and textual XML mode to store the data.This research is an actual problem based on the groundwater monitoring application. In virtue of fully considered the characteristic of Pocket PC, it has adopted the succinct window interface, simple operation, and it is very fit for field work. The result has proved that the system is not only convenient for the operation, the work is reliable and measuring error answers the purpose, but also cost is cheap and the run is stable.更多还原