Design And Implement On Editable Equipment Library In Analog Circuit Virtual Experiment

With the development of computer technology, multi technology and network technology, development and researches on network-based virtual experiment becomes more and more concerned by education professor. And it becomes the hot topic of distance education.In the teaching process of analog circuit experiment, a widely rang of experiment equipments are needed.Many types of chips are emerged with the development of electronic technology and chip manufacturing technology. Therefore, in virtual experiment system, it is still difficult to meet users'request, though it provides many common equipments. Through investigating software for, circuit simulations in foreign countries have the function of sustain user to extend equipment library and can edit the equipment.But the software is so professional that it is not fit for education especial for analog circuit virtual experiment, and the editorial for equipment focused on the right equipment package.The method they can allow users to edit the equipment is that they add SPICE sentence to describe the device model,especially for describing the chip, using strings of SPICE. This method can not directly show the inner side of the chip.Too many virtual experiments in electronic and electrical class internal are still stay the edge that can not allow users to edit and extend the equipment library.Editable equipment library in analog circuit virtual experiment, the system that this paper design and accomplish, use Java for development language, Java Swing as the interface, Java2D technology as graph drawing in the system.Adopt the definition of SPICE to develop the simulation equipment, and based on this, use XML file as the storage carrier. And finally design and implement a system that can edit the equipments in the simulation equipment library for analog circuit virtual experiment.Editable equipment system in equipment library of analog circuit virtual experiment has friendly user face and easy operation, well positioned to meet the teaching analog circuit teaching requirements.It can improve students'experimental ability.Finally it resolved the problems such as user couldn't create new simulation equipments,user couldn't expand and manage the equipment library and so on.Equipment library editing system in the application of analog circuit virtual experiment has greatly enhanced the speed of developing equipment, and facilitated the expansion and management of equipment library. Teachers have been affirmed.