1. Remote - DSP Lab for Distance Education
Kalantzopoulos Athanasios, Karageorgopoulos Dimitrios
Zigouris Evangelos
Electronics Laboratory, Electronics & Computer Div.,
Dept. of Physics, University of Patras, Greece

2. Remote Laboratories Advantages: Types of Remote laboratories:
Higher availability of lab equipment
Efficient exploitation of time
Sharing of hardware across institutions
Relatively low cost
Types of Remote laboratories:
Sensor
Batched
Interactive 2

3. R-DSP Lab A Remote Lab for DSP Systems Design
Introduction
R-DSP Lab’s Architecture
Main Web Server
Workstation
Security
Designed Toolkits based on LabVIEW
Remote Laboratory Exercises
R-DImPr Lab 3

4. R-DSP Lab Introduction
Is an interactive and user-friendly Remote Laboratory
Is focused on DSP Systems Design for Signal Processing
Is accessible through a common Web Browser
Has carefully designed GUIs in order to provide accurate representation of real instruments 4

5. R-DSP Lab’s Architecture5

6. R-DSP Lab’s Architecture6

7. Main Web Server (1/2) Undertakes the reception of the visitors
Secures the R-DSP Lab with authorization procedures
Redirects the authorized users to the workstations according to a distribution logic
Stores statistical information of the use of the R-DSP Lab 7

8. Main Web Server (2/2)
Technologies and tools used for the Main Web Server:
Apache Web Server
MySQL Database
PHP
HTML 8

9. R-DSP Lab’s Architecture9

10. Workstation (1/2)
Allows the communication between the authorized users and the lab equipment
The design and development is determined by:
the object of laboratory exercises
the lab equipment
Can serve up to three users simultaneously 10

11. Workstation (2/2) R-DSP Lab’s Workstation consists of:
A Windows based PC
A development platform DSK C6713 by Spectrum Digital based on TMS320C DSP of TI
A TDS 1012 Oscilloscope by Tektronix
A TG 2000 DDS Function Generator by TTi
A USB Webcam 11

12. Workstation’s Block Diagram12

13. Workstation (1/2)
In every R-DSP Lab’s Workstation three LabVIEW-based applications run in order to serve up to three users simultaneously. Each application:
Allows a single user to control the Workstation remotely through a Web Page
Has user-friendly Graphical User Interfaces – GUIs
Controls the Function Generator and Oscilloscope 13

14. Workstation (2/2)
In every R-DSP Lab’s Workstation three LabVIEW-based applications run in order to serve up to three users simultaneously. Each application:
Controls Code Composer Studio (CCS) v3.1 and DSK C6713 using the LabVIEW to CCS toolkit
Connects to MySQL database using the LabVIEW to MySQL toolkit
Captures images from a USB Webcam 14

15. Function Generator’s GUI Real Function Generator
R-DSP Lab’s GUIs (1/2)
R-DSP Lab’s GUIs were carefully designed in order to provide the most accurate representation of the features and operation of the real instruments:
Function Generator’s GUI
Real Function Generator 15

16. R-DSP Lab’s GUIs (2/2)
Oscilloscope's GUI
Real Oscilloscope 16

17. Laboratory Exercises
Students are asked to design a set of laboratory exercises:
FIR digital filters
IIR digital filters
512-point FFT
Students must:
Design and simulate their solution using a scientific software package
Write the code that implement their solution in C or Assembly language using the CCS and create the executable file
Login to the R-DSP Lab
Upload the executable file to the R-DSP Lab
Verify the correct function of their solution using an available Workstation 17

18. R-DSP Lab from User Side (1/4)18

19. R-DSP Lab from User Side (2/4)19

20. R-DSP Lab from User Side (3/4)20

21. R-DSP Lab from User Side (4/4)21