For more info, please visit us at singaren.sg

1. For more info, please visit us atwww.singaren.net.sg

2. Virtual Reality Interface for Web-Based Remote Experimentation Virtual Reality Interface for Web-Based Remote Experimentation Ko Chi Chung, Ben M. Chen, Cheng Chang Dong, Chen Jianping Department of Electrical and Computer Engineering National University of Singapore Singapore 117576 URL: http://vlab.ee.nus.edu.sg/vlab Email: elekocc@nus.edu.sg For more information, please visit http://vlab.ee.nus.edu.sg/vlab

3. Virtual Reality Interface for Web-Based Remote Experimentation 1. Objectives 2. Features 3. Hardware Infrastructure 4. Software Architecture and Tools 5. Experiments with 2D-Based Interface 5.1 Coupled Tank Control Experiment 5.2 Frequency Modulation Experiment 5.3 Frequency Modulation Experiment Using Webcast 5.4 Oscilloscope Experiment 5.5 Helicopter Control Experiment 5.6 Robotic Soccer Experiment 6. Experiments with Virtual Reality Interface 6.1 3D-Based Oscilloscope Experiment 7. Key Techniques in this project 8. Current works 9. Impacts on Education For more information, please visit http://vlab.ee.nus.edu.sg/vlab

4. Virtual Reality Interface for Web-Based Remote Experimentation Objectives • Perform the experiments any time anywhere through the Internet • Perform an actual experiment physically over Internet • Share some expensive instruments • Have a natural hands-on experience of using these instruments For more information, please visit http://vlab.ee.nus.edu.sg/vlab

5. Virtual Reality Interface for Web-Based Remote Experimentation Features • Use a standard Java-enabled browser such as Microsoft Internet Explorer or Netscape Communicator • Adopt some relevant real instruments in the laboratory instead of simulating the experiment result on the client computer • Provide real-time live video even audio capture on the actual happenings in the laboratory • Give a more realistic feel of the instrument in manipulating control buttons and knobs of the instrument For more information, please visit http://vlab.ee.nus.edu.sg/vlab

6. Virtual Reality Interface for Web-Based Remote Experimentation Hardware Infrastructure For more information, please visit http://vlab.ee.nus.edu.sg/vlab

7. Virtual Reality Interface for Web-Based Remote Experimentation Software Architecture and Tools For more information, please visit http://vlab.ee.nus.edu.sg/vlab

8. Virtual Reality Interface for Web-Based Remote Experimentation Experiments with 2D-Based Interface For more information, please visit http://vlab.ee.nus.edu.sg/vlab

9. Virtual Reality Interface for Web-Based Remote Experimentation 1. Coupled Tank Control Experiment To study control theory and test control algorithm For more information, please visit http://vlab.ee.nus.edu.sg/vlab

10. Virtual Reality Interface for Web-Based Remote Experimentation 1. Coupled Tank Control Experiment (Cont) Logon successfully Select control model Input control parameters Real time live video Observe the experiment Data retrieved Download the result Write the report Four control models are available PID Control (MIMO) Manual Control General State-Space Control (MIMO) Fuzzy Logic Control (MIMO) For more information, please visit http://vlab.ee.nus.edu.sg/vlab

11. Virtual Reality Interface for Web-Based Remote Experimentation 2. Frequency Modulation Experiment To study frequency spectra of frequency modulated signals For more information, please visit http://vlab.ee.nus.edu.sg/vlab

12. Virtual Reality Interface for Web-Based Remote Experimentation 2. Frequency Modulation Experiment (Cont) Logon success Adjust parameters Record experimental data Retrieve data Calculate results Write report For more information, please visit http://vlab.ee.nus.edu.sg/vlab

13. Virtual Reality Interface for Web-Based Remote Experimentation 3. Frequency Modulation Experiment Using Webcast Allow several observing users to view an existing remote experimental session while it is being conducted by a main user For more information, please visit http://vlab.ee.nus.edu.sg/vlab

14. Virtual Reality Interface for Web-Based Remote Experimentation 4. Oscilloscope Experiment To teach students circuits and the use of an oscilloscope For more information, please visit http://vlab.ee.nus.edu.sg/vlab

15. Virtual Reality Interface for Web-Based Remote Experimentation 2. Oscilloscope Experiment (Cont) Logon successful Adjust parameters Real time live video Record experimental data Data retrieved Calculate the result Write the report For more information, please visit http://vlab.ee.nus.edu.sg/vlab

16. Virtual Reality Interface for Web-Based Remote Experimentation 5. Helicopter Control Experiment Study control theory and test control algorithm Manual Control PID Control (MIMO) Decoupled PID Control (MIMO) State Space Control (MIMO) For more information, please visit http://vlab.ee.nus.edu.sg/vlab

17. Virtual Reality Interface for Web-Based Remote Experimentation 6. Robotic Soccer Experiment Teach robot control principles and methodology For more information, please visit http://vlab.ee.nus.edu.sg/vlab

18. Virtual Reality Interface for Web-Based Remote Experimentation Experiments with Virtual Reality Interface For more information, please visit http://vlab.ee.nus.edu.sg/vlab

19. Virtual Reality Interface for Web-Based Remote Experimentation 1. 3D Oscilloscope Experiment To obtain much more realistic feel in conducting the oscilloscope experiment For more information, please visit http://vlab.ee.nus.edu.sg/vlab

20. Virtual Reality Interface for Web-Based Remote Experimentation 1. 3D Oscilloscope Experiment (cont) To observe the experiment through real time video feedback For more information, please visit http://vlab.ee.nus.edu.sg/vlab

21. Virtual Reality Interface for Web-Based Remote Experimentation 1. 3D Oscilloscope Experiment (cont) To walk around the whole virtual laboratory while conducting experiment For more information, please visit http://vlab.ee.nus.edu.sg/vlab

22. Virtual Reality Interface for Web-Based Remote Experimentation Key Techniques in this project • Design Components Include button, knob, slider, connector, screen, wall, window, etc. • Design navigating behavior To view instruments and experiment from different angles. • Design picking behavior To manipulate control components on virtual instruments. • Design outdoor scene To simulate outdoor scene. For more information, please visit http://vlab.ee.nus.edu.sg/vlab

23. Virtual Reality Interface for Web-Based Remote Experimentation Current works • Auto-programming for constructing of virtual instrument Graphical configuration Auto-creation Java3D source code Compile Java3D target code For more information, please visit http://vlab.ee.nus.edu.sg/vlab

24. Virtual Reality Interface for Web-Based Remote Experimentation Current works (cont) • Adaptive transmission for real time video in 3D environment Client side Server side Player on the client Transmitter Video server Color Compression rate Frame rate Size For more information, please visit http://vlab.ee.nus.edu.sg/vlab

25. Virtual Reality Interface for Web-Based Remote Experimentation Current works (cont) • Test network transmission for 3D-based web pages Ethernet Bandwidth controller Traffic models Tunnel For more information, please visit http://vlab.ee.nus.edu.sg/vlab

26. Virtual Reality Interface for Web-Based Remote Experimentation Impacts on Education • Oscilloscope experiment was launched in 1999, and has served over 1000 engineering students in NUS more than 2500 times • Coupled tank apparatus was launched in 2000, and has been serving served two years of third-year engineering undergraduates over 5000 times • Frequency modulation experiment was launched towards the end of 2000, and it enables 800 undergraduate students to have a natural hand-on experience of using an expensive spectrum analyser over 4000 times • The two-degree-of-freedom helicopter and robotic soccer have launched recently, and they have been utilized for the purpose of course demonstrations in NUS For more information, please visit http://vlab.ee.nus.edu.sg/vlab

27. Virtual Reality Interface for Web-Based Remote Experimentation Impacts on Education (cont) Some of the universities used or visited sites Sir Syed University Of Engineering And Technology Polytechnic Zagreb Monash University Madras University Loughborough University Institute of Experimental Physics Hugh Baird College BTH, Sweden Ajman University Adelaide University Hokkaido Tokai University American University of Sharjah Indian Institute of Technology delhi Narvik university college Kathmandu University University of Adelaide Waterford Institute of Technology, Ireland University of Virginia Delft University of Technology Strathclyde University Purdue University University of Plymouth Oxford University Nanyang Technology University NgeeAnn Polytechnic University Of Malaya Massachusetts Institute of Technology Universidad Nacional de Ingenieria The University of Hong Kong Universidad del Biobio Anna University, India University of Adelaide University of Warwick University of Regina, Canada South China Normal University For more information, please visit http://vlab.ee.nus.edu.sg/vlab

28. Virtual Reality Interface for Web-Based Remote Experimentation Impacts on Education (cont) An example Frequency Modulation Experiment American University of Sharjah (AUS), 44 times Delft University of Technology (TUD), 42 times Oscilloscope Experiment American University of Sharjah (AUS), 134 times Delft University of Technology (TUD), 22 times For more information, please visit http://vlab.ee.nus.edu.sg/vlab

29. Virtual Reality Interface for Web-Based Remote Experimentation Thank you! For more information, please visit http://vlab.ee.nus.edu.sg/vlab