基于Delphi平台的供水管网信息识别

文章针对供水管网计算所需的3类信息,以Delphi7为平台,提出了计算机进行信息识别的实现方法。在假定各管段流向基础上,通过判断节点与管段端点坐标,获得管网的衔接矩阵;利用Windows API对管网图形进行区域染色,通过判别各管段周围的颜色,识别管网的环路信息;利用多边形面积法,判断各环内管段流向的顺、逆时针方向,得到管网的回路矩阵。该识别方法准确可靠,且易于编程实现,能够有效提高管网计算的准确性,进而为管网的计算机模拟与控制提供了保证。

Information identification of water distribution networks based on Delphi

The methods for identifying the three kinds of information of water distribution networks are proposed based on Delphi 7.The incidence matrix can be identified by comparing the nodes' coordinates with those of pipe endpoints.The basic loops can be obtained by judging the colors around each pipe after district dyeing,which is implemented by calling for Windows API functions.And the direction of a pipe in a loop can be determined by calculating the polygon area as every basic loop can be regarded as a polygon.These proposed methods are accurate and easy to program,and they can dramatically improve the accuracy of network calculation,so the network simulation and control can be ensured as well.