VTB LabView Interface

1
VTB LabView Interface
September 2003

• William McKay

2
Outline

• LabView
• Virtual Instruments and VTB
• Examples
• Future Directions
• Conclusion

3
VTB LabView Co-Simulation

• LabView Virtual Instruments (VIs) are widely used
  for measurement, monitoring and control
• Diverse methods of data acquisition
• Full graphical programming language
• Diverse methods for network communication
• Perfect environment for incorporating into VTB
  for measurement and testing

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VTB LabView Co-Simulation
LabView can export a VI as a dynamic link library
(.dll)

• As the simulation runs, the VI block executes
  acquiring data from the system simulated in VTB
• Output from the VI is sent to the VTB system

The LabView VI is inserted into a system defined
within the VTB Schematic Editor by wrapping it in
a VTB model
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LabView Wrapper Model

• Interface to the Dll created by Application
  Builder
• Three inputs/three outputs

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Local Measurement

• Low-pass filter model validation
• In the same building
• Not on the same floor

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VTB LabView Link Supports Remote Measurement

• Allows testing of complex systems before all
  components are physically assembled at one site
• Demonstration example remote testing of a power
  transformer

Internet
Power Transformer Sensors LabView RDA
Server Location Polytechnic of Milan, Italy
VI executed within VTB Visualization of acquired
data Location USC, USA
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Remote Model Validation
Simulated waveform matching experimental data
acquisition
Transformer output and reference signal are
measured in Italy and sent to the US for
comparison with the transformer model
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Future Directions

• Buffered input/output
• Natural way for data acquisition
• Grab n number of data points and stream them to
  VTB
• LabView 7 Express update

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Conclusion

• VTB can easily incorporate Virtual Instruments
  created in LabView
• LabViews rich data acquisition capabilities are
  available to VTB

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Contact Information

• Bill McKay - mckay_at_engr.sc.edu