The Design And Development Of Web Virtual Instrument Laboratory

With the development of information technology education, network development and therapid spread of teaching, teaching has been the experimental network weaknesses, thus building atraditional constraints, no time and geographical limitations of a virtual laboratory networksbecome urgent need to address the important issue. This presented a Web-based virtual laboratory,in the detailed design laboratory management system based on the use of Web technology toachieve virtual laboratory spectrum analysis system, focus on resolving the browser for virtualreal-time spectrum analysis of the experimental operation of the operation, to establish an openlaboratory to make initial attempts.First, the papers will computer network technology and virtual instrumentation technologyorganically integrated in the existing hardware and software development spectrum analysis basedvirtual laboratory testing network systems for users with networking, open laboratory environment.Virtual laboratory research in the analysis of the status and problems of building on the basis of adetailed design of structural systems, the system used C/S/B structure, based on VBscript, ASPtechnology a platform, users need only have a basic computer and network conditions can visit anyvirtual laboratory. Use of programming language LabVIEW graphical development simulation,and analysis of network spectrum measurements experiments using SQL Server DataSockettechnology and the development of data handling procedures, the completion of the experimentaldata transmission and preservation. IP-MAC joint accreditation system introduced mechanisms toachieve shared hardware resources and make common share and support students experimenthardware systems, and networks and distributed test system experiments Components experiment.Secondly, the establishment of a database based on SQL Server laboratory informationmanagement system (LIMS), the system uses its dynamic Web database applications of thethree-tier structure, from browsers, Web server devices, database servers composition B/Sthree-tier model, users can achieve management, resource management, data management,equipment management and laboratory management systems, laboratories, clients and the externalenvironment, organically constitute a whole, to ensure that virtual laboratory automation systemoperation and healthy development.Virtual Web laboratory experiments in education not only can save the input and, moreimportantly, the institutions can improve the existing education system and raise the level ofteaching institutions and the quality of teaching and promote learning autonomy, developing andenhancing the capacity of students involved and innovation. Its completion will enable collegesand universities teaching experiments to a new stage of modernization. But as a new type ofexperiment, although not completely replace traditional experiments, but it is more flexible thantraditional experiments diverse manifestations, in raising the quality of students and promote thedevelopment of innovative experimental teaching techniques will play an important role.