Design And Implementation Of Network Virtual Circuit Laboratory Server

Along with the fast development of network technology, Virtual realization technology based on Network has become the hot research topics of many universities, and it has become a very important method in the experiment teaching innovation to replace the traditional laboratory.On the basis of advanced circuit-teaching experience and network technology, Expermental Teaching Center of Electrotechnics & Electronics of Harbin Engineering University has studied to establish a virtual network circuit laborotary on net. It is a new attempt of the software and hardware's design and realization.According to the computer and network technology and status of current circuit experiment teaching, it has put forward a design scheme of network virtual circuit laboratory's server. At first, we explain the whole frame of the network virtual circuit laboratory's server as well as the multithreading program flow of the sever system and the synchronization of double thread. Then we study the problem of the server's communications with the client. Based on TCP/IP, we design the protocol and realization method of data transmission between the server and the client. It solved the problem of identity validation and data exchange. The keypoints of this paper is to realize the measure experimental data with software. It introduces the principle of circuit netlist, analysis and resolution course, and how to realize the server's control over the hardware configuration circuit and the virtual instrument.