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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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team organization
Team Organization
  • Milad Gougani

Project Manager

  • Zachary BlairSoftware Engineer
  • Amir TavakoliQuality Assurance Engineer
  • Datis DaneshElectronics Engineer
  • Rahm LavonMechanical Engineer
project
Project
  • First generation of smart bicycles
  • Hydraulic ABS equipped
  • Advanced features
    • Interactive menu
    • Speedometer
    • Odometer
motivation
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

overview
Overview
  • System Overview
  • Speed Sensor
  • Electronic Control Unit (ECU)
  • Hydraulic Control Unit (HCU)
  • Business Case
  • Conclusion
speed sensor hardware
Speed Sensor - Hardware

No power consumption !

speed sensor software
Speed Sensor - Software

distance

Speed =

time

time

distance

speed sensor alternatives
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
ecu hardware
ECU - Hardware
  • Data Acquisition
    • processing the sensor signal
  • Brake Actuation
    • driving Hydraulic Control Unit
  • User Interface
    • interfacing the system with the user
data acquisition
Data Acquisition
  • A/D is done by utilizing a comparator (Schmitt trigger)

more stable switching against rapid triggering by noise

brake actuation
Brake Actuation
  • interfacing HCU (pump/valve) to the microcontroller
ecu hardware cont d
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
user interface
User Interface
  • interfacing information to the user
ecu software
ECU - Software
  • Brake Actuation
    • implementing control algorithm
  • User Interface
    • interfacing information to the LCD
user interface features
User Interface Features
  • Menu-driven interface with softkeys
  • Button debouncing and typematic key repeat
  • Programmable backlight intensity
  • Configuration stored in non-volatile memory
hydraulic brake alternatives
Hydraulic Brake – alternatives
  • Cable brake
  • Hydro viscous brake
  • Eddy current brake
business case
Business Case
  • Market
  • Cost
  • Financing
  • Competition
need in the market
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
financing
Financing
  • We covered all the costs
    • Believe in the product
    • Start business
    • Keep the product loyalty
competition
Competition
  • There is no similar product in the market
  • It is a Unique design
  • The Hydraulic ABS system will give us an edge
potential market for bicycle abs
Potential Market for Bicycle ABS
  • Professional Athletes
    • training bicycle
  • Novice Cyclist
  • Everyday Commuters
  • Electric scooters
other potential market
Other potential market
  • Mountain Bike Riders
  • Youth
  • Bicycle rental retail stores
lessons learned
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
future plan
Future Plan
  • light weight
  • lower power consumption
  • autonomous
  • more features
    • front-wheel speed monitoring
    • heart rate monitor
    • statistics
    • USB interface
    • rear view camera
references
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].