Laboratory 7 Introduction to LabVIEW General Engineering Department Polytechnic University

Overview l Applications in EG101 l Sample interfaces l Remote Communication l Graphic-based/Text-based l Virtual Instruments (VIs) l Front Panel/Diagram Panel l Tools l Front Panel Controls l Controls and Indicators l Color Representation l Objectives l Program 1: Calculator l Program 2: Voltmeter l LabVIEW Proficiency Test l Conclusion

Without LabVIEW

With LabVIEW

Applications in EG101 l LAB 3: Microphone l LAB 7: LabVIEW l LAB 8: Vibrations, Waves and Spectra l LAB 10: Fiber Optics l TimeFreq l TwoChan l Filter l Record l Playback

Sample Interfaces

Remote Communication l Internet l Control Devices –Robotic Arm –Bridge

Graphics-based vs. Text-based GC++

Virtual Instruments (VIs) Appearance and operation imitates actual physical instruments

Front Panel and Diagram Panel

Tools

Front Panel Controls Terminal in diagram panel represents front panel object in source code

Controls and Indicators Two types of objects in front panel

Color Representation

Objectives l Learn basic, introductory commands l Input data (voltage) l Create two programs

Program 1: Calculator l Input –Keyboard –Input/Output board l Switch: 3 operations l 3 LEDs l 2 numeric controls l 1 indicator l Switch for input data l Case statement

Program 2: Voltmeter l Input from I/O block (±5 volts) l 7 LEDs: 7-segment display rounded to nearest integer l 1 negative sign LED l Case statement: control different combinations

LabVIEW Proficiency Test l 25-segment LED display with corresponding cases l 2 switches –binary-to-decimal –decimal-to-binary (inoperative) l Control l Warning function First 5 non-repeating letters and #s of name (last, first) and ID

Conclusions l Advantages –Saves money/space –Unlimited customized applications l More help –LabVIEW manuals –Help Team report Include: l Front/Diagram panels of both programs l Brief written explanations of implementation