The Research And Development Of Electric CAD System

With the development of CAD (Computer Aided Design), CAD is increasingly integrated into the electric design. However, the early electric design was developed by the common CAD software system. It increased the efficiency of the electric design, but it didn't meet the requirement of the increasingly development in electric design because of the complexity and universality in electric design. Therefore, professional electric CAD system should be developed to meet some special users. Now, some electric CAD software has arose in the domestic market, such as EPlan21, IDq, SuperWORKS. It's a great help to electric design.By studying the current electric CAD software system, the electric CAD software system is developed with the concept of integrated design by Visual C++ platform based on the Jhcad2003. This system absorbs the advantages of current electric CAD software system.In the function design, after having analyzed and studying the characteristic of the electric elements and the electric symbol, the open electric symbolic database is developed, which offers the method of drawing elements, modifying and maintaining the symbolic database. What's more, the toolbar of the electric elements symbolic database is designed to be convenient for the users. With the concept of integrated design, a structure is developed to integrated manage in engineering project. By analyzing the design characteristic of the circuit diagram, a network topology model is built to determine the connection between the electric elements. By using the method of integrated management, some functions are designed on the base of the circuit diagram, such functions as developing the list of electric element, automatically labeling the code name of component kinds and line, and finding components and lines.It has verified that this program has succeeded in realizing above-mentioned functions, which prove the correctness and feasibility of this method.