LabVIEW for Instrumentation & Control System


LabVIEW  =  Laboratory  +  Virtual Instrument Engineering Workbench

.         Lab VIEW is a graphical programming language that uses icons instead of lines of text to create programs.

.         LabVIEW program called Virtual Instrument  produced by National Instruments in 1988.

.         LabVIEW is a much loved tool of the scientist and engineer.

.         Jeff Kodosky is the “Father of LabVIEW”.

Virtual Instrument:

.         Lab VIEW programs are called virtual instruments, or VIs, because their appearance and operation imitate physical instruments, such as oscilloscopes and multimeters etc.

.         After build the user interface, add code using VIs and structures to control the front panel objects. The block diagram contains this code.

Elements of DAS:

  1. Transducer: A device that converts a physical phenomenon such as light, temperature, pressure, or sound into a measurable electrical signal such as voltage or current.
  2. Signal: The output of the transducer.
  3. Signal conditioning: Hardware that you can connect to the DAQ device to make the signal suitable for measurement or to improve accuracy or reduce noise.
  4. DAQ hardware: Hardware you use to acquire, measure, and analyze data.
  5. Software: NI application software is designed to help you easily design and program your measurement and control application (LABVIEW).

DAQ Device Properties:

  • DAQ devices have four standard elements:
  1. Analog input (AI)
  2. Analog output (AO)
  3. Digital I/O (DIO)
  4. Counter/Timers


Advantages of LabVIEW

.    Easy to learn, use, maintain, and upgrade

.    One tool for design, prototyping and deployment

.    Multi-disciplinary use(Instr. Elect. Control…)

.    Multiplatform (Windows, Mac OS, Linux, RTOSs)

.    Multicore-ready design and support for different      hardware  acceleration technologies.(DSP, FPGA…)

.    Ability to solve and execute complex algorithms in real time.



Applications of LabView in Various Industries

.         Instrumentation

.         Process Control

.         Electronics

.         Communication

.         Biomedical

.         Robotics

.         Image Processing

.         Research…………………


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