Electronic Circuit Virtual Laboratory Based on LabVIEW and Multisim

With the increase of students, electronic laboratories and instruments have become in critical need in many universities and colleges, thus the construction of virtual laboratory and virtual instruments have attracted attentions of many researchers. LabVIEW is the most widely used virtual instruments developing software with the most powerful functions, which can be used for virtual instruments developing, such as virtual oscilloscope, virtual signal generator, virtual spectrum analyzer, etc. Multisim is simulation tool for electronic circuit, which can be used for analog electronic circuit and digital electronic circuit simulation. This paper develops an electronic circuit virtual laboratory system with LabVIEW and Multisim 10.0 software. The system includes 5 main sub-systems: EDA experiment system, virtual instrument system, assistance teaching system, teaching management system and user management system. Data is transferred in the three-layer structure: user interface layer, business processing layer and data storage layer. Users can access the system through only web browsers. Constructing virtual laboratory on computers can make up for the experiment hardware shortage and improve the electronic circuit experiment teaching quality.