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Cyclic Technologies™ Bicycle Anti-lock Braking System

Cyclic Technologies™ Bicycle Anti-lock Braking System. ENSC 440/ 305 Fall 2008. Team Organization. Milad Gougani Project Manager Zachary Blair Software Engineer Amir Tavakoli Quality Assurance Engineer Datis Danesh Electronics Engineer Rahm Lavon Mechanical Engineer. Project .

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Cyclic Technologies™ Bicycle Anti-lock Braking System

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  1. Cyclic Technologies™Bicycle Anti-lock Braking System ENSC 440/ 305 Fall 2008

  2. Team Organization • Milad Gougani Project Manager • Zachary BlairSoftware Engineer • Amir TavakoliQuality Assurance Engineer • Datis DaneshElectronics Engineer • Rahm LavonMechanical Engineer

  3. Project • First generation of smart bicycles • Hydraulic ABS equipped • Advanced features • Interactive menu • Speedometer • Odometer

  4. Motivation • Transport Canada recorded 60 bicyclist fatalities and thousands of bicyclist injuries in 2001 [1] • Helmets are used to protect cyclists in the event of an accident, but keeping safe on a bike is largely about avoiding accidents in the first place  need for safety • Bicycle is one of the few vehicles on the road with no or little improvement since its invention • Market potential (one-of-a-kind system)  an opportunity to make money

  5. Overview • System Overview • Speed Sensor • Electronic Control Unit (ECU) • Hydraulic Control Unit (HCU) • Business Case • Conclusion

  6. System Overview [2]

  7. System Overview

  8. Speed Sensor - Hardware No power consumption !

  9. Speed Sensor - Software distance Speed = time time distance

  10. Speed Sensor – alternatives • Hall effect sensor • a transducer that varies its output voltage in response to changes in magnetic field • Optical sensor • a light-emitting diode illuminating a phototransistor

  11. ECU - Hardware • Data Acquisition • processing the sensor signal • Brake Actuation • driving Hydraulic Control Unit • User Interface • interfacing the system with the user

  12. Data Acquisition • A/D is done by utilizing a comparator (Schmitt trigger) more stable switching against rapid triggering by noise

  13. Brake Actuation • interfacing HCU (pump/valve) to the microcontroller

  14. Brake Actuation

  15. ECU – Hardware cont’d • Atmel ATmega 162 microcontroller • 16 kB of program memory. ~ 40% used • 4 timers, input capture, PWM • EEPROM for storing config • HD44780 LCD display • Industry standard controller

  16. User Interface • interfacing information to the user

  17. ECU - Software • Brake Actuation • implementing control algorithm • User Interface • interfacing information to the LCD

  18. Brake Actuation

  19. User Interface

  20. User Interface Features • Menu-driven interface with softkeys • Button debouncing and typematic key repeat • Programmable backlight intensity • Configuration stored in non-volatile memory

  21. Hydraulic Control Unit

  22. Hydraulic Control Unit

  23. Hydraulic Brake – alternatives • Cable brake • Hydro viscous brake • Eddy current brake

  24. Business Case • Market • Cost • Financing • Competition

  25. No Recession for Bicycle Makers

  26. Need in the Market • Bicycles have little or no protection • Big demand for safety • Helmets, gloves, goggles, knee pads, … • Protect cyclist in an accidents • Do not prevent accidents

  27. Cost

  28. Financing • We covered all the costs • Believe in the product • Start business • Keep the product loyalty

  29. Competition • There is no similar product in the market • It is a Unique design • The Hydraulic ABS system will give us an edge

  30. Estimated Product Cost

  31. Potential Market for Bicycle ABS • Professional Athletes • training bicycle • Novice Cyclist • Everyday Commuters • Electric scooters

  32. Professional Athletes

  33. Professional Athletes

  34. Novice cyclists

  35. Everyday Commuters

  36. Electric Scooters

  37. Other potential market • Mountain Bike Riders • Youth • Bicycle rental retail stores

  38. Lessons learned … • Systematic approach to circuit design is needed to ensure a robust product • Buy a lot of spare parts • Do not underestimate Integration of working modules

  39. Future Plan • light weight • lower power consumption • autonomous • more features • front-wheel speed monitoring • heart rate monitor • statistics • USB interface • rear view camera

  40. References [1] Canada. Transport Canada, “Road Safety in Canada – 2001”, Transport Canada. [Online]. Available: http://www.tc.gc.ca/roadsafety/tp/tp13951/2001/page7.htm [Accessed: Sept. 21, 2008] [2]“Anti-lock Braking System” in Wikipedia, History, Sept. 18, 2008. [Online]. Available: http://en.wikipedia.org/wiki/Anti-lock_braking_system [Accessed: Sept. 21, 2008].

  41. Questions ?

  42. System Block Diagram

  43. Overall Electronics Schematic

  44. Team Work

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