1. Design and Implementation of a Java Based Distributed Control System over The Internet: A Tele-Laboratory System Dr. Onur Toker & Dr. Fouad Al-Sunni

2. Outline Web based systems: An overview Telelaboratory design alternatives Details of our design and implementation Some tele-experiments Conclusion

3. HTML document access

4. CGI document access

5. Servlet document access

6. Design alternative #1

7. Design alternative #2

8. Design alternative #3

9. Design alternative #4

10. Design alternative #5

11. Model selection Model #2 is selected Deterministic sampling time Dedicated DSP for control algorithm Dedicated DAQ for high speed data collection External DSP/DAQ communication

12. DAQ Board JNI drivers developed for this board

13. DSP Board JNI drivers developed for this board

14. Server PC

15. Server PC cards

16. A live camera Java Bean

17. Resource sharing issues Shared resources, therefore semaphores Time limit on resource locking Semaphores with time-out feature needed

18. Login Screen

19. Experiment Screen

20. Experiment Results

21. Conclusion Bandwidth is a problem for LiveCam Use a DSP for control algorithm Use a DAQ for data acquisition JNI driver development Servlet programming on the server side Applet programming on the client side