Stonehurst Regatta Race Team

1. Multidisciplinary Engineering SeniorDesignStonehurst Regatta RaceProject 05511Sponsor: John Bowen Photon Gear Inc.Mentor: Mr. Garsin

2. Stonehurst Regatta Race Team • Douglas Carr (Team Leader) • Robert Magnant • Juan Gonzalez • Jeffrey Lisco • Jacob Johnson

3. Agenda • Background • Project Requirements & Specs • Concept Development • Feasibility • Final Design • Problems • Lessons Learned

4. Background • The Race • A collegiate regatta • Actually 2 races in 1 • How is the race timed now? • Seiko S129 Printing Stopwatches • What are the problems with this method? • Not the timers themselves but… • Miscommunications & human errors in reporting the results over the phone

5. The Race Site

6. The Race Site

7. AM Race • 5000 meters • Endurance style “Head Race” • Aprox 15-25 minutes PM Race • 1500 meters • All out “Sprint Race” • Aprox 4-7 minutes

8. Race Results • Start and finish line Stopwatches are synced, creating a global race clock. • Boats crossing the start have their global time recorded, second time taken at finish. • At the Results Booth: • tam + (3 * tpm) = ttotal t finish - t start = trace

9. The Finish Line

10. Project Requirements & Specs

11. Needs Assessment • Major errors occur during data entry • Project should prevent timing errors from occurring in the future • Design must be able to survive in Rochester weather • Must be easy to use - volunteers • Appropriate documentation for future use • Current system preserved (backup) • $500 Budget

12. Specifications • Capture start and finish times without distorting 1/10th a second accuracy • 1/10000 failure rate should not be jeapordized • System must handle multiple boats and the start finish line • Weather-proof • Operating Temperatures 15 to 100 °F • 10 hour minimum battery life

13. Specifications (Cont.) • User feedback to verify functionality is desired. (“On” and “Sync” lights etc.) • Wireless data transfer from collection sites to results booth.

14. Concept Development

15. Start Time Capture Start Line Record Transmit Receive Processing Results Booth Transmit Record Finish Line Finish Time Capture

16. Design Brainstorm • Microcontrollers on Each boat • Passive RFID tags on each boat • Stopwatch data outputted to a laptop • Embedded Real Time Clock Design

17. Qty Part # Description Price 1 P-7550 Control Module w/RS-232 $ 236.84 $ 236.84 1 P-7548 Remote Antenna RFM $ 248.88 $ 248.88 3 P-7549 Antenna Tuning Module $ 82.01 $ 246.03 1 P-7552 Multiplexer Module $ 162.44 $ 162.44 100 P-7039 Transponder 85mm R/W $ 7.19 $ 719.00 1 Cable 500ft $ 150.00 $ 150.00 3 P-7223 Antennas $ 210.81 $ 632.43 Total $2,395.62 RFID Concept • Passive RFID system with Wireless Interface • RFID’s triggered by underwater emitter • Triggered tags emit coded boat number • Heard by antennae and recorded by a laptop • High part volume and cost make infeasible

18. Stopwatch Data Interface • Utilize “Data Output Jack” for electronic data capture • Problems upon inspection: • Proprietary, non-standard connector • Unknown output protocol • Alternative: • “Manual Trigger” jack, simple 2 pin connector • Requires only a short to trigger stop watch

19. Feasibility Assessment • Factors Considered: • Team has sufficient skills and resources • Cost within budget? • Two quarters sufficient time? • Ability to Complete and create a working unit • Ease of use by race volunteers

20. Feasibility Study

21. Final Design

22. Synthesis • Essentially 2 Stop Watches in parallel • Seiko SW Prints a data hardcopy • Senior’s SW records data electronically • Both SW triggered by one signal • Feedback to the user via LED’s • Data can be exported to external storage via FTP data transfer whenever appropriate

23. Hardware Flow • Button press triggers stopwatch and a PIC interrupt • PIC retrieves time from RTC, sends to CPU • LED’s indicate system functions

24. Timing System Flowchart

25. OOM Cost Analysis:

26. What will the end Product be?

28. Timing Device Layout

29. Program Flowchart

30. Software Application: GUI

31. Problems • Real Time Clock IC incompatible with PCB • Adapter necessary • PIC programmer incompatible • Old programmer, New PIC • Budget constraints prevent buying new programmer • RS232 Data Transfer • How to properly capture?

32. Switch to Stamp Microcontroller • Stamp developers readily available • Equipment easily obtainable • Easily accessable functionality • Simple integration

33. Desired vs Actual Outcomes • PCB and PIC implementation • Project completed before CDR • Keep to Budget • Basic Stamp • Final integration will occur before June 1st, 2005 • Project and modifications will still be under budget.

34. Lessons Learned • Clear definition of goals and specifications is critical. • Identify key parameters right away, such as budget. • Plan for the unexpected. • Have prototype hardware in hand as early as possible.

35. Questions?

36. References • http://pdfserv.maxim-ic.com/en/ds/DS232A.pdf • http://pdfserv.maxim-ic.com/en/ds/DS1390-DS1393.pdf • http://ww1.microchip.com/downloads/en/DeviceDoc/40044b.pdf • http://www.designserver.rit.edu