Introduction to LabVIEW 8 in 3 Hours.pdf

Introduction to LabVIEW

3-Hour Hands-On

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Contents

Introduction

Virtual Instrumentation .................................................................................................................................3

Section IÏLabVIEW Environment

A. Getting Data into Your Computer

Data Acquisition Devices...............................................................................................................10

NI-DAQ..........................................................................................................................................12

Simulated Data Acquisition ...........................................................................................................14

Sound Card.....................................................................................................................................16

B. LabVIEW Environment

Front Panel/Block Diagram............................................................................................................18

Toolbar/Tools Palette .....................................................................................................................21

C. Components of a LabVIEW Application

Creating a VI ..................................................................................................................................24

Data Flow Execution......................................................................................................................25

Debugging Techniques...................................................................................................................26

D. Additional Help

Context Help ..................................................................................................................................32

Tips for Working in LabVIEW ......................................................................................................33

Section IIÏElements of Typical Programs

A. Loops

While Loop.....................................................................................................................................36

For Loop.........................................................................................................................................36

B. Functions and SubVIs

Types of Functions .........................................................................................................................38

Searching the Functions Palette .....................................................................................................40

Creating Custom SubVIs................................................................................................................41

C. Decision Making and File I/O

Case Structure ................................................................................................................................47

Select (If Statement).......................................................................................................................47

File I/O ...........................................................................................................................................48

Section IIIÏPresenting Your Results

A. Displaying Data on the Front Panel

Controls and Indicators ..................................................................................................................52

Graphs and Charts ..........................................................................................................................53

Arrays .............................................................................................................................................55

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Introduction to LabVIEW Hands-On

Loop Timing...................................................................................................................................58

B. Signal Processing

Textual Math ..................................................................................................................................61

MathScript......................................................................................................................................62

Section IVÏAdvanced Data Flow Topics (Optional)

A. Additional Data Types

Clusters...........................................................................................................................................70

Waveforms .....................................................................................................................................73

B. Data Flow Constructs

Shift Register..................................................................................................................................74

Local Variables ..............................................................................................................................75

C. Large Application development

Navigator Window .........................................................................................................................76

LabVIEW Project...........................................................................................................................77

Additional Help Resources..........................................................................................................................78

LabVIEW Certification ...............................................................................................................................79

Electronics Workbench and Multisim.........................................................................................................80

Multisim Integrated with LabVIEW ...........................................................................................................81

Exercise Solutions .......................................................................................................................................83

Exercises

Exercise 1..............................................................................................................................................12

Exercise 2..............................................................................................................................................27

Exercise 3.1...........................................................................................................................................43

Exercise 3.2...........................................................................................................................................45

Exercise 3.3...........................................................................................................................................49

Exercise 4.1...........................................................................................................................................60

Exercise 4.2...........................................................................................................................................64

Exercise 5..............................................................................................................................................68

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Introduction to LabVIEW Hands-On

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Introduction to LabVIEW

3-Hour Hands-On

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Introduction to LabVIEW Hands-On

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