The Casting Demonstrator. Using the Raspberry Pi for graphics and simulated floor heating
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The document describes a demonstrator project implementing a floor heating controller on a Raspberry Pi. It uses the Homeport middleware to connect simulated and real devices. A graphical user interface displays temperature readings in real-time from a Simulink simulation running on the Raspberry Pi, but graphics performance is limited due to the Raspberry Pi's hardware.
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The Casting Demonstrator. Using the Raspberry Pi for graphics and simulated floor heating
- 1. Cassting Demonstrator Mads Kronborg Kim G. Larsen Marco Muniz Petur Olsen Thomas Pedersen Arne Skou Jiri Srba Center for Embedded Software Systems Aalborg University, Denmark petur@cs.aau.dk InfinIT, November 3, 2016
- 2. Introduction Demonstrator Raspberry Pi Conclusion Introduction Cassting demonstrator Implementation on Raspberry Pi 2/21 petur@cs.aau.dk Cassting Demonstrator
- 3. Introduction Demonstrator Raspberry Pi Conclusion Overview European research project System synthesis Floor heating controller Demonstrator Real and simulated devices 3/21 petur@cs.aau.dk Cassting Demonstrator
- 4. Introduction Demonstrator Raspberry Pi Conclusion 4/21 petur@cs.aau.dk Cassting Demonstrator
- 5. Introduction Demonstrator Raspberry Pi Conclusion 5/21 petur@cs.aau.dk Cassting Demonstrator
- 6. Introduction Demonstrator Raspberry Pi Conclusion Homeport Middleware for heterogeneous home automation networks Abstracts underlying physical devices Adapters RESTful interface Real and simulated devices 6/21 petur@cs.aau.dk Cassting Demonstrator
- 7. Introduction Demonstrator Raspberry Pi Conclusion Adapter1 Adapter2 ... Adaptern HomePort API Discovery Service Event Handler Request Handler Data Model Application1 Application2 ... Applicationm Logging Service Daemon Service Devices Devices Devices... Clients Clients Clients... 7/21 petur@cs.aau.dk Cassting Demonstrator
- 8. Introduction Demonstrator Raspberry Pi Conclusion Tool Chain Architecture Uppaal- Stratego HomePort GUI Seluxit adapters temperature readings valve control data strategy weather forecast current data temperature set-point 8/21 petur@cs.aau.dk Cassting Demonstrator
- 9. Introduction Demonstrator Raspberry Pi Conclusion Tool Chain Architecture Uppaal- Stratego HomePort GUI temperature readings valve control d dt Ti (t) = n j=1 Ad i,j (Tj (t) − Ti (t)) + Bi (Tenv(t) − Ti (t)) + Hv j,i · vj data strategy weather forecast current data temperature set-point 8/21 petur@cs.aau.dk Cassting Demonstrator
- 10. Introduction Demonstrator Raspberry Pi Conclusion Tool Chain Architecture Uppaal- Stratego HomePort GUI temperature readings valve control d dt Ti (t) = n j=1 Ad i,j (Tj (t) − Ti (t)) + Bi (Tenv(t) − Ti (t)) + Hv j,i · vj data strategy weather forecast current data temperature set-point 8/21 petur@cs.aau.dk Cassting Demonstrator
- 11. Introduction Demonstrator Raspberry Pi Conclusion HomePort Library Rest Webservice Simulink to Seluxit Seluxit Adapter House GFX (SDL2) Simulink ERT Adapter Forecast Adapter Controller Simulink Model LCD ScreenUPPAAL STRATEGO Seluxit Gateway Setpoint Ctrl Relay Box Valve1..n 9/21 petur@cs.aau.dk Cassting Demonstrator
- 12. Introduction Demonstrator Raspberry Pi Conclusion HomePort Library Rest Webservice Simulink to Seluxit Seluxit Adapter House GFX (SDL2) Simulink ERT Adapter Forecast Adapter Controller Simulink Model LCD ScreenUPPAAL STRATEGO Seluxit Gateway Setpoint Ctrl Relay Box Valve1..n 10/21 petur@cs.aau.dk Cassting Demonstrator
- 13. Introduction Demonstrator Raspberry Pi Conclusion 11/21 petur@cs.aau.dk Cassting Demonstrator
- 14. Introduction Demonstrator Raspberry Pi Conclusion Implementation on Raspberry Pi Not Uppaal Homeport with adapters Matlab/Simulink Code Generation GUI - C++/SDL2 12/21 petur@cs.aau.dk Cassting Demonstrator
- 15. Introduction Demonstrator Raspberry Pi Conclusion Matlab/Simulink Thermodynamics simulation Four times per second Homeport adapter Sends new values to Homeport Received values from Homeport Code generation out-of-the-box 13/21 petur@cs.aau.dk Cassting Demonstrator
- 16. Introduction Demonstrator Raspberry Pi Conclusion Graphical User Interface Simple DirectMedia Layer C++ OpenGL Game development Simple game loop - event, update, render Dynamic rendering 14/21 petur@cs.aau.dk Cassting Demonstrator
- 17. Introduction Demonstrator Raspberry Pi Conclusion 15/21 petur@cs.aau.dk Cassting Demonstrator
- 18. Introduction Demonstrator Raspberry Pi Conclusion 16/21 petur@cs.aau.dk Cassting Demonstrator
- 19. Introduction Demonstrator Raspberry Pi Conclusion 17/21 petur@cs.aau.dk Cassting Demonstrator
- 20. Introduction Demonstrator Raspberry Pi Conclusion Performance issues Runs at about 2-3 FPS CPU utilization about 40% Vast majority of CPU time spent waiting for drawing Grid tiles 96x54 = 5184 18/21 petur@cs.aau.dk Cassting Demonstrator
- 21. Introduction Demonstrator Raspberry Pi Conclusion Possible solution Pre-render background Bake rooms Did not help 19/21 petur@cs.aau.dk Cassting Demonstrator
- 22. Introduction Demonstrator Raspberry Pi Conclusion Possible solution Pre-render background Bake rooms Did not help Full HD 1920x1080 Proves to much for the graphics chip 19/21 petur@cs.aau.dk Cassting Demonstrator
- 23. Introduction Demonstrator Raspberry Pi Conclusion Possible solution Pre-render background Bake rooms Did not help Full HD 1920x1080 Proves to much for the graphics chip No graphics upgrade in new Raspberry Pi 19/21 petur@cs.aau.dk Cassting Demonstrator
- 24. Introduction Demonstrator Raspberry Pi Conclusion Conclusion Excellent platform for the demonstrator (Mostly) Easy to develop on Prototyping with Matlab/Simulink Very good performance, except Lacking graphics performance 20/21 petur@cs.aau.dk Cassting Demonstrator
- 25. Introduction Demonstrator Raspberry Pi Conclusion Questions? 21/21 petur@cs.aau.dk Cassting Demonstrator