TELELAB is a remote monitoring and control system that allows experiments to be observed and controlled from a web browser without being physically present. A centralized server connects multiple remote PCs running experiments to clients over the internet. This reduces costs and facilitates collaboration between laboratories. The system uses MATLAB to program controllers that can be automatically uploaded to remote PCs to guarantee real-time performance during remote experiments.

1. A Remote Monitoring and Control System TELELAB Presented by : Avinash Pathak Dron Sharma

2. What TELELAB is ?? TELELAB is a system designed for remote monitoring and controlling which may be required in scientific research, testing and experimentation. It provides the observer with the data he/she requires without him/her being physically present at the place where the actual experiment is being conducted.

3. BLOCK DIAGRAM

4. Features of TELELAB Designed controller (Simulink file) is automatically converted as a real-time executable and uploaded on a remote PC connected to one or more processes, guaranteeing hard real-time performance The experiments are controlled by a standard web browser allowing a full modification of controller parameters and observing signals on real-time plots. Since a centralized server is employed to handle the remote PC’s, experiments can be easily shared among different laboratories or even different departments/universities, so reducing costs and facilitating the birth of laboratory consortia Much more practical and industrial oriented program.

5. HOW WE WILL ACHIEVE IT !!!!

6. Integrator ATMEL MEGA 8L SERVER TCP/IP CLIENT 2 CLIENT 3 CLIENT 4 CLIENT 1 Through DB9 Port LAN N/W Model of implementation

7. Components List

8. Components List contd..

9. MATLAB WORKING

10. Applications of MATLAB Math and computation Algorithm development Data acquisition Modeling, simulation, and prototyping Data analysis, exploration, and visualization Scientific and engineering graphics Application development, including graphical user interface building

11. Interfacing b/w PCs DB-25 PORT It is the parallel port. 2-9 are bi-directional data pins pins 10-13 and 15 are output pins (status pins) pins 1,14,16,17 are input pins. pins 18-25 are Ground pins.

12. Interfacing b/w PCs contd… DB-09 PORT This is the serial port. Pin 3 is the Transmit (TX) pin, pin 2 is the Receive (RX) pin and pin 5 is Ground pin. Other pins are used for controlling data communication in case of a modem.

13. How access the Parallel port ?? MATLAB has an adaptor to access the parallel port . To access the parallel port in MATLAB, define an object >> parport= digitalio('parallel','LPT1'); obtain the port address using, >> get(parport,'PortAddress') >> daqhwinfo('parallel'); % To get data acquisition hardware information We have to define the pins 2-9 as output pins, by using addline function >> addline(parport, 0:7, 'out') Now put the data which you want to output to the parallel port into a matrix; e.g. >> dataout = logical([1 0 1 0 1 0 1 1]); Now to output these values, use the putvalue function >> putvalue(parport,dataout); Alternatively, you can write the decimal equivalent of the binary data and output it. >> data = 23; >> putvalue(parport,data);

14. Serial IO with MATLAB The following steps are required for serial data communication Create serial port object. Use MATLAB command serial Configure serial port object. get and set commands Connect to the device. Fopen Configure if required. get and set commands Write data with fprintf command. Read data with fscanf command. Disconnect device on transmission over. Use fclose

15. Serial Read

16. Serial write

19. Atmel mega 8L Pin Diagram :

20. Block Diagram of Atmel mega 8L

21. Block Diagram of Atmel mega 8L contd..

22. How hex code is burn

23. Showing the window of client & server of Telelab

27. REFERENCES [1] Matlab help. http://www.mathworks.com/academia/ [2] ‘tcp udp ip’ toolbox for Matlab. http //www.mathworks.com/matlabcentral/f ileexchange/ loadF ile.do?objectI d = 345 [3] Instrument Control Toolbox for Matlab. http : //www.mathworks.com/access/helpdesk [4] WinAvr help. [5] Atmel Avr Manuals mega8 and some appnotes. http : //atmel.com/dyn/resources [6] Real Systems in the Virtual Lab 2000. [Online]. Available: http://prt.fernunihagen.de/rsvl [7] Remote Lab Experiment RC Oscillator for Learning of Control. S. Uran, D. Hercog and K. Jezernik. University of Maribor, Faculty of Electrical Engineering and Computer Science, Maribor, Slovenia [8] S. Dormido, Control Learning: Present and Future, In Proc. 15 IFAC World Congres on Automatic Control,Barcelona, Spain, 2002. [9] M. Casini, et all, The Automatic Control Telelab, IEEE Control Systems Magazine, vol. 24, No. 3, 2004, pp.36-44.