Design And Realization On The Electronics Information Teaching Testing System Of Virtual Instrumets Based On LabVIEW

The high school experiment teaching with traditional instruments is slow to demands of information ages and real engineering.The delayed experiment instruments can not satisfy the requirement on the modern testing technology:high-speed,well-responded and the good interface between human and the device.And it is difficult to use traditional instruments to realize capability extension and the resource sharing.Virtual instrument(Ⅵ),which is based on the core of computer,exploits software to combine hardware resource of computer and instrument hardware. It makes use of the strong software capability of computer to carry out the operation,analysis and processing of the signal data.The new instrument have not only basic capability of traditional instrument but also own special capability.When traditional instrument is replaced byⅥ,it will satisfy the experiment teaching of clectronic information,raise the instrument usage greatly,realize the resource sharing and cut down the experiment set-up budget.What is more,user could define new capability of instrument according his own demands.The nucleus is the development of software in the design and realization of virtual instruments.This paper has the method of module and uses many papers to describe the whole building process of filter,it also offers the panels and the diagrams of virtual signal frequency spectrum analytical instrument,virtual filter,virtual signal generation instrument,virtual integrator and differentiator regulator.These virtual instruments,which are composed of the teaching testing system,can be applied to basic experiment teaching courses,for instance circuit theory,electronic technical basis,signal and system engineering,antomation control theory.The paper studies several popular architectures and environments ofⅥs. And it tells the ways and the experiences of the design with theⅥ,which are valuable to exploitⅥs.