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IntelliSki: Portable Ski Data Tool Prototype - Senior Project Report

Explore the development of IntelliSki, a portable tool for skiers to obtain trail data. The report covers design goals, components, algorithms, results, and future work. Details include operational constraints, user base, key components like GPS and microcontroller, algorithm functions, prototype modifications, and issues faced. It delves into the code, data points, and possible additions for enhancement. The project's conclusions, challenges, achievements, and acknowledgments are also highlighted.

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IntelliSki: Portable Ski Data Tool Prototype - Senior Project Report

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  1. Senior Project Steve Dumais & Joe Fisher EER/CPE 199 Saturday March, 6th 2005

  2. Outline: • What is IntelliSki? • Design Goals & Constraints • Components & Interfaces • Algorithms • Results • Future Work & Conclusion

  3. What is IntelliSki? • IntelliSki,is a portable, multifunctional tool used to acquire data that is interesting to the typical skier. 

  4. Design Goals • IntelliSki Indicates: • Skier’s current trail name and difficulty. • Altitude • Temperature • Total vertical feet skied • Number of Runs

  5. Constraints • Operational Temperature (0º to 70º F) • Battery Life ( > 12 hours) • Size (Pocket Size) • Weight (< 1 pound) • Retail Cost (< $250)

  6. Who will use IntelliSki? • Beginners • Skiers in poor weather conditions • Avid skiers • Ski Resorts

  7. How will it work? Jiminy Peak

  8. Components: • LCD Display • Programmable Microcontroller • GPS System • Serial Port Interface (future addition) • Temperature Sensor (future addition)

  9. Block Diagram:

  10. Microcontroller: • Key Factors: • Size • Power Consumption • Operating Temperature • Cost • Selection of Ports

  11. U-Blox SAM-LS GPS Antenna • Key Factors: • Size • Power Consumption • Operating Temperature • Fast Update Rate

  12. LK204-25E • Key Factors: • Size • Operating Temperature • Screen Dimensions

  13. I2C Protocol Master Transmitter Mode

  14. RS232 Protocol

  15. RS232 w/ UART0 • SCON0: UART control Register • Set to Mode 1: • 8-bit UART • Variable Baud Rate

  16. Interface Problems: • I2C • Could not get ACK from LCD • Would not change states • Signal level • RS232 • Incompatible signal levels • UART • GPS antenna was too low level. • Power/pin interface

  17. Prototype Model • Modifications: • Removed Microcontroller • Use 2 RS232 comm ports • Switched to handheld Garmin GPS Device

  18. Algorithm: Start Up Get GPS Data Find Nearest Point Output Run Data Output Trail Data

  19. GPS Data @050217145934N4249221W07352839S015+00148E0000N0000U0000 Latitude: 4249221 -> 42° 49m 22.1s Longitude: 07352839 -> 73° 52m 83.9s Altitude: 00148 -> 148 ft Master[7] = {Lat_Deg, Lat_Min, Lat_Sec, Lon_Deg, Lon_Min, Lon_Sec, Alt}

  20. Algorithm: Start Up Get GPS Data Find Nearest Point Print Run Data Print Trail & Diff.

  21. Finding The Nearest Point: Lat_Min = 32 Lat_Min = 33 Search Lat_Sec Return Found Search Lon_Sec Make Candidate Array Return Closest Match If only 1 match Else

  22. Algorithm: Start Up Get GPS Data Find Nearest Point Print Run Data Print Trail & Diff.

  23. Print Trail Data

  24. Algorithm: Start Up Get GPS Data Find Nearest Point Print Run Data Print Tail & Diff.

  25. Print Run Data

  26. Algorithm: Start Up Get GPS Data Find Nearest Point Print Run Data Print Tail & Diff.

  27. Code: • Executable Code Size = 26.5 kb • 1200 Lines of Code • 216 Data Points • 4 Data Storage Arrays • 1 Search Array

  28. Possible Additions: • Temperature Sensor • Date/Time • Log of trails skied • PC interface • GPS Beacon

  29. Conclusions: • Problems: • Interfacing with microcontroller • Signal levels • Receiving ACK from LCD • Accomplishments: • Fully functional software! • Interpreted and displayed data. • Successful algorithms to parse data and find closest points

  30. Acknowledgements: Thank You: Professor Traver Professor Spinelli Professor Hedrick Professor Spallholz Gene Davison

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