VIRTUAL INSTRUMENTATION (PE – III) B.Tech. IV Year I Semester JNTUH R-18

• Explain the historical perspective of virtual instrumentation.

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• Historical perspective of virtual instrumentation

• Discuss the advantages of virtual instrumentation over traditional instrumentation.

• Describe the block diagram and architecture of a typical virtual instrument.

• Compare and contrast data-flow programming with conventional programming techniques.

Unit II: VI Programming Techniques

• Explain the concept of virtual instruments (VIs) and sub-VIs.

• Describe how to use loops and charts in VI programming.

• Explain the use of arrays, clusters, and graphs in VI programming.

• Discuss the different case and sequence structures available in LabVIEW.

• Explain the use of formula nodes, local and global variables, and string and file I/O in VI programming.

• Describe the role of instrument drivers and mathscript in VI development.

Unit III: VI Interface Requirements

• Explain the working principle of common instrument interfaces like current loop, RS-232C/RS485, and GPIB.

• Discuss the different types of bus interfaces used in virtual instrumentation, such as USB, PCMCIA, VXI, SCSI, PCI, PXI, and Firewire.

• Explain the role of PXI system controllers and Ethernet control in PXI systems.

• Describe the VISA and IVI standards for virtual instrument communication.

• Discuss the importance of data acquisition hardware in virtual instrumentation systems.

Unit IV: Application of Virtual Instrumentation

• Explain how virtual instruments can be used for instrument control using RS-232C and IEEE488 interfaces.

• Describe the process of developing a virtual instrument using a graphical user interface (GUI).

• Discuss the use of virtual instruments in real-time systems and embedded controllers.

• Explain the concept of OPC and its role in virtual instrumentation.

• Describe how to use ActiveX programming to publish measurement data on the web.

Unit V: VI Toolsets

• Explain the use of distributed I/O modules in virtual instrumentation systems.

• Describe the capabilities of the LabVIEW Control Design and Simulation toolkit.

• Discuss the use of the LabVIEW Digital Signal Processing toolkit for signal processing applications.

• Explain how the LabVIEW Image Acquisition and Processing toolkit can be used for image processing tasks.

• Describe the use of the LabVIEW Motion Control toolkit for controlling motors and other actuators.