Computer Aided Design of Relay Control Circuit System

The characteristics of secondly circuit diagram are analyzed and the network topological coding system is used to describe the connected relationships in the diagram.The paper also puts forward the way of identifying the logical relation of electrical apparatus,automatic matching d of electrical apparatus and the method to calculate the shortest cable length between electrical devices.By using the methods,the electrical device terminal array and cable list can be generated automatically,meanwhile,the design result is optimized. The developed CAD software can automatically accomplish most work that was done manually before,it improves the design efficiency and optimizes the design result.