Application Study Based On The Virtual Experiment Secondary Vocational Schools' Teaching Equipments

This subject comes from upgrading and reforming of electrical labs in a secondary vocational school.To reduce experiment costs and to improve students' level of theory and practice are the important purposes of upgrading and reforming of school labs, which can solve the long-standing problem that secondary vocational schools are short of teaching equipment. This subject aims to build a virtual experimental system under a network platform by introducing virtual instruments and network technology, which reduces building and operating costs of school labs, and increase students' learning interest and efficiency, so as to promote the development of vocational education.On the basis of full use of previous research findings and careful analysis of users' needs, the design makes a all-round account of building a virtual lab from three layers, which are theoretical research, technical approach, and application development. It focuses on analyzing module designs of virtual lab units , designs and realization of virtual experimental systems under the LabVIEW software platform, presents a object-oriented modular solution, and make a brief account of its achieving process by the example of" virtual experiment systems of electrical disciplines in secondary vocational schools."The virtual oscilloscope, virtual voltmeter, virtual power meter, virtual multi-purpose function generator, virtual spectrum analyzer and other virtual instruments designed under the LabVIEW software platform , as well as series of virtual experiments developed based on LabVIEW ,of electrical basis, analog electronic circuits digital electronic circuit and other vocation school subjects have been delivered. With the design being put into use, the school has upgrades to the next level of experiment and teaching results have been improved significantly.