LABVIEW

What is LabVIEW?

LABVIEW ⇛   Laboratory Virtual Instrument Engineering  workbench.                       

Ø  LabVIEW is a graphical programming language that uses icons instead of lines of text to create applications.

Ø  When compared with text-based programming languages that use instructions to determine the order of program execution, LabVIEW uses dataflow programming.

Ø  In data flow programming, the flow of data through the nodes on the block diagram determines the execution order of the VIs and functions.

Ø  VIs, or virtual instruments, are LabVIEW programs that imitate physical instruments.

Ø  LabVIEW code files have extension “.vi’’, which stands for “virtual instrument”.

Ø  They also offer additional Add-ons and toolkits.

Ø  The graphical program is names “G” .Originally lunched for the Apple Macintosh in 1986.

Let’s have a look at LabVIEW image.

⇔ Integrate Hardware            Visualize Data     ⇔   Accelerate Engineering.

LabVIEW is commonly used for

ü Data Acquisition (Acquire data from instruments)

ü Instrument Control (Control instruments and equipment)

ü Industrial Automation

LabVIEW for Engineers:

§  LabVIEW makes it possible to bring the data /information Form the outside world and to perform calculations based on the acquired data.

§  The processed data is sent back to the real world so that equipment/device produces favourable output, with respect to the given input.

   Cool features of labVIEW:

v  People with limited coding experience can develop labVIEW program. (for example take me, I am not a LabVIEW professional but I help others by sharing my knowledge.)

v  Fast and extensive hardware integration.

v  Graphical approach of programing.

v  Parallel programing.

v  Add-ons to improve and simplify your task.

v  LabVIEW programing software is easily available.

v  Examples program help us to understand programs and there functions.

LabVIEW Versions:

Base package                                  ♧       Reduced mathematical functionality.

Full package                                   ♧      Complete set of mathemathical functions.

  Student Edition                  ♧    Full package with a watermark in the lower right corner.

Professional package         ♧   we can create stand-alone applications.

NI Developer suit               ♧   Include extra add-ons and toolkit.

 Construct a simple program using Labview:

Ø 
Start your labVIEW using start menu.

Ø  Start menu      ↠     All programs       ↠    National instruments LabVIEW.

Ø  Now a days people use windows 10 which makes easy to lunch LabVIEW you have to just search it or just use the shortcut icon which is available on your desktop.

Ø  This image shows how to lunch LabVIEW

Ø  Once u open LabVIEW you can either create a new project or open the existing project which you might program in future.

Ø  LabVIEW programs are called VI’s.

Ø  Let’s start, use shortcut “Ctrl + N” to create a new project.

Ø  While programing I prefer to split your screen into two as shown.

Ø  Use “CTRL + T” to make both the windows parallel.

Ø A LabVIEW VI has two main parts:

                                I.            Front panel – which displays the control ( Knob, Button, graph, etc.) and represents the Graphical interface for VI.

                              II.            Block diagram – holds the programming elements called Blocks functions or sub Vis, there are wired together to build the Graphical program.

Ø  Right click inside the front panel to open control palette.

Ø  Next click numeric to place Numeric control and Numeric indicator.

Ø  Control – input.

Ø  Indicator – output.

Ø  Right click inside the Block diagram.

Ø  Next click numeric and place “add” (for adding two number) icon.

Ø  For addition we need two integers for adding so you need to place another control.

Ø  Finally wire them all to make your own program which can add two numbers.

Ø  There is no need to compile you have to just run it using “run button”.

Ø  If your program contains error you will see a broken arrow.

Ø  When your program is free from error desired out will be obtained.

Ø  Indicator will display your output.

Ø  Press “Ctrl + U” to make the program sketch cleaned up I mean to make it Professional.

      I would like to finish this tutorial. Wait for my next blog, In my next post I will

Teach you how to use Boolean function. For simplicity I will upload the same on youtube.


LabVIEW program file
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