Laboratory 7 Introduction to LabVIEW

Laboratory 7Laboratory 7Introduction to Introduction to

LabVIEWLabVIEW

General Engineering General Engineering DepartmentDepartment

Polytechnic University Polytechnic University

OverviewOverview Applications in EG101Applications in EG101 Sample interfacesSample interfaces Remote CommunicationRemote Communication Graphic-based/Text-basedGraphic-based/Text-based Virtual Instruments (VIs)Virtual Instruments (VIs) Front Panel/Diagram PanelFront Panel/Diagram Panel ToolsTools Front Panel ControlsFront Panel Controls Controls and IndicatorsControls and Indicators Color RepresentationColor Representation

ObjectivesObjectives Program 1: Program 1:

CalculatorCalculator Program 2: Program 2:

VoltmeterVoltmeter LabVIEW Proficiency LabVIEW Proficiency

TestTest ConclusionConclusion

Without LabVIEWWithout LabVIEW

With LabVIEWWith LabVIEW

Applications in EG101Applications in EG101

LAB 3: MicrophoneLAB 3: Microphone LAB 7: LabVIEWLAB 7: LabVIEW LAB 8: Vibrations, LAB 8: Vibrations,

Waves and SpectraWaves and Spectra LAB 10: Fiber OpticsLAB 10: Fiber Optics

TimeFreqTimeFreq TwoChanTwoChan FilterFilter RecordRecord PlaybackPlayback

Sample InterfacesSample Interfaces

Remote CommunicationRemote Communication InternetInternet Control Control

DevicesDevices

– Robotic Robotic ArmArm

– BridgeBridge

Graphics-based vs. Text-Graphics-based vs. Text-basedbased

GGC+C+++

Virtual Instruments Virtual Instruments (VIs)(VIs)

Appearance and operation imitates

actual physical instruments

Front Panel and Diagram Front Panel and Diagram PanelPanel

•

ToolsTools

Front Panel ControlsFront Panel Controls

Terminal in diagram panel represents front panel object

in source code

Controls and IndicatorsControls and Indicators

Two types of objects in front panel

Color RepresentationColor Representation

ObjectivesObjectives

Learn basic, Learn basic, introductory introductory commandscommands

Input data Input data (voltage)(voltage)

Create two Create two programsprograms

Program 1: CalculatorProgram 1: Calculator

InputInput– KeyboardKeyboard– Input/Output boardInput/Output board

Switch: 3 operationsSwitch: 3 operations 3 LEDs3 LEDs 2 numeric controls2 numeric controls 1 indicator1 indicator Switch for input dataSwitch for input data Case statementCase statement

Program 2: VoltmeterProgram 2: Voltmeter

Input from I/O block Input from I/O block (±5 volts)(±5 volts)

7 LEDs: 7-segment 7 LEDs: 7-segment display rounded to display rounded to nearest integernearest integer

1 negative sign LED1 negative sign LED Case statement: Case statement:

control different control different combinationscombinations

LabVIEW Proficiency LabVIEW Proficiency TestTest

25-segment LED display 25-segment LED display with corresponding caseswith corresponding cases

2 switches2 switches– binary-to-decimalbinary-to-decimal– decimal-to-binary decimal-to-binary

(inoperative)(inoperative) ControlControl Warning functionWarning function

First 5 non-repeating letters and #s of name (last, first) and IDFirst 5 non-repeating letters and #s of name (last, first) and ID

ConclusionsConclusions

AdvantagesAdvantages– Saves money/spaceSaves money/space– Unlimited customized Unlimited customized

applicationsapplications More helpMore help

– LabVIEW manualsLabVIEW manuals– HelpHelp

Team reportTeam reportInclude:Include: Front/DiagramFront/Diagram

panels of bothpanels of bothprogramsprograms

Brief written Brief written explanations ofexplanations ofimplementationimplementation