EI 1004 VIRTUAL INSTRUMENTATION 3 0 0 100AIM
To obtain comprehensive knowledge in virtual instrumentation and some of its applications.
i. To review background information required for studying virtual instrumentation.
ii. To study the basic building blocks of virtual instrumentation.
iii. To study the various techniques of interfacing of external instruments of PC.
iv. To study the various graphical programming environment in virtual instrumentation.
v. To study a few applications in virtual
1. REVIEW OF DIGITAL INSTRUMENTATION 6
Representation of analog signals in the digital domain – Review of quantization in amplitude and time axes, sample and hold, sampling theorem, ADC and DAC.
2. FUNDAMENTALS OF VIRTUAL INSTRUMENTATION 10
Concept of virtual instrumentation – PC based data acquisition – Typical on board DAQ card – Resolution and sampling frequency - Multiplexing of analog inputs – Single-ended and differential inputs – Different strategies for sampling of multi-channel analog inputs. Concept of universal DAQ card - Use of timer-counter and analog outputs on the universal DAQ card.
3. CLUSTER OF INSTRUMENTS IN VI SYSTEM 10
Interfacing of external instruments to a PC – RS232, RS 422, RS 485 and USB standards - IEEE 488 standard – ISO-OSI model for serial bus – Introduction to bus protocols of MOD bus and CAN bus.
4. GRAPHICAL PROGRAMMING ENVIRONMENT IN VI 10
Concepts of graphical programming – Lab-view software – Concept of VIs and sub VI - Display types – Digital – Analog – Chart – Oscilloscopic types – Loops – Case and sequence structures - Types of data – Arrays – Formulae nodes –Local and global variables – String and file I/O.
5. ANALYSIS TOOLS AND SIMPLE APPLICATIONS IN VI 9
Fourier transform - Power spectrum - Correlation – Windowing and filtering tools – Simple temperature indicator – ON/OFF controller – P-I-D controller - CRO emulation - Simulation of a simple second order system – Generation of HTML page.
L = 45 Total = 45
1. S. Gupta and J.P Gupta, ‘PC Interfacing for Data Acquisition and Process Control’,
Instrument society of America, 1994.
2. Peter W. Gofton, ‘Understanding Serial Communications’, Sybex International.
3. Robert H. Bishop, ‘Learning with Lab-view’, Prentice Hall, 2003.
1. Kevin James, ‘PC Interfacing and Data Acquisition: Techniques for Measurement, Instrumentation and Control’, Newness, 2000.
2. Gary W. Johnson, Richard Jennings, ‘Lab-view Graphical Programming’, McGraw Hill Professional Publishing, 2001.
Note: To offer this elective, multi-user licensed copy of Lab-view software should be available.