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微灌工程CAD软件研究
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摘要
本文通过对国内外现有灌溉工程辅助设计软件的调查,结合微灌工程规划设计的特点,采用Visual Basic对AutoCAD进行二次开发,对微灌工程CAD系统作了研究。该系统集成了Microsoft Visual Basic、AutoCAD、Microsoft Access、Microsoft Excel等应用软件,充分利用了VB集成开发环境、CAD绘图、Excel电子表格计算、Access数据库等相应功能。在一个比较高的起点上,结合微灌工程规划设计的要求,实现了微灌工程规划设计的自动化。系统功能包括了工程规划图绘制、管网的层次分析、管网的水力计算、管径的确定、水泵及配套电机的选择、设备清单与概算表的自动生成等。在系统优化方面,本文采用以包括灌水器、管网、水泵、电机等设备在内的微灌系统的年费用最小为目标函数,利用遗传算法求解。最后应用该系统对一小型住宅微喷灌工程进行了规划设计,很方便地获得了该微喷灌系统的计算结果、概算表等。软件明显提高了设计的效率,具有较高的实用性。
This paper customize AutoCAD by using Visual Basic in order to study micro-irrigation computer aided design software, after investigating the present irrigation software of domestic market and overseas'. The character of micro-irrigation was also taking into account. This software integrated Visual Basic, AutoCAD, Microsoft Access, Microsoft Excel and other software, making full use of the integrated development environment of Visual Basic, the plot function of AutoCAD, the calculation function of Excel, the database function of Access. We achieved automate design of the micro-irrigation project. The software has functions such as drawing the layout of micro-irrigation project, analyzing the levels of the pipeline network, hydraulic calculation, defining the diameter of the pipeline, selecting water pump and outfitting electromotor, forming the bill of equipment and budgetary estimate table. For the optimization of the water distribution pipeline network system, we use the least annual cost of the whole micro-irrigation system, the variables include nozzle, pipeline, water pump, electromotor and so on, genetic algorithm was applied. Finally, by using this software, we designed a small residential sprinkler irrigation project. We got the result of the calculation and budgetary estimate conveniently. The software improved the efficiency remarkably and has preferable practicability.
引文
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