Cyclic Technologies Bicycle Anti
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Transcript Cyclic Technologies Bicycle Anti
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
• First generation of smart bicycles
• Hydraulic ABS equipped
• Advanced features
Interactive menu
Speedometer
Odometer
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
•
•
•
•
•
•
System Overview
Speed Sensor
Electronic Control Unit (ECU)
Hydraulic Control Unit (HCU)
Business Case
Conclusion
System Overview
[2]
System Overview
ECU
speed
ECU
module
HCU
Hydraulic
valve &
pump
Instantaneous rear
wheel speed
Instantaneous front
wheel speed
Sensor
Hydraulic
disk
brake
Front and
rear
wheels
Speed Sensor - Hardware
No power consumption !
Speed Sensor - Software
distance
Speed =
distance
time
time
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
• Data Acquisition
• processing the sensor signal
• Brake Actuation
• driving Hydraulic Control Unit
• User Interface
• interfacing the system with the user
Data Acquisition
• A/D is done by utilizing a comparator (Schmitt trigger)
more stable switching against rapid triggering by noise
Brake Actuation
• interfacing HCU (pump/valve) to the microcontroller
Brake Actuation
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
• interfacing information to the user
ECU - Software
• Brake Actuation
• implementing control algorithm
• User Interface
• interfacing information to the LCD
Brake Actuation
User Interface
User Interface Features
• Menu-driven interface with softkeys
• Button debouncing and typematic key repeat
• Programmable backlight intensity
• Configuration stored in non-volatile memory
Hydraulic Control Unit
Hydraulic Control Unit
Hydraulic Brake – alternatives
• Cable brake
• Hydro viscous brake
• Eddy current brake
Business Case
• Market
• Cost
• Financing
• Competition
No Recession for Bicycle Makers
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
Cost
Date
Oct. 16
Oct. 24
Nov. 12
Nov. 20
Nov. 27
Nov. 28
Dec. 10
Dec. 12
Dec. 13
Description
Hydraulic
Bleed Kit
Brake
Avid Juicy 5 Hydraulic
Disc Brake
$ 180.00
Valve
Mech.
Parts
LCD
Circuitry
Magnets
MicroContoller
$ 100.00
Circuit Components
& Magnets
Pump received from
Flight Works Inc.
Avid Juicy Hydro Line
Kit
Circuit Components
& Mechanical
Components
Pump
Misc.
$ 38.00
$ 25.00
$ 10.84
$
318.00
$
66.57
$
236.70
$
80.08
$
32.38
$
9.23
$
105.84
$
62.49
$
35.88
Subtotal $
947.17
$ 30.73
$ 236.70
$ 47.20
$ 32.88
$ 7.64
Circuit Components
Valvereceived
From
Peter Paul Valves &
Mechanical
Pump Misc.
Components received
Mechanical
Components
$ 13.74
$
$ 80.71
$ 11.00
9.23
$ 13.17
$ 11.96
$ 62.49
$ 32.18
$ 227.20
$ 100.00
$ 299.19
$ 80.71
$ 52.99
$ 3.70
$ 25.00
$ 33.81
$ 30.73
$ 11.00
Total
$ 86.54
Advances
Total $ 947.17
Financing
• We covered all the costs
Believe in the product
Start business
Keep the product loyalty
Competition
• There is no similar product in the market
• It is a Unique design
• The Hydraulic ABS system will give us an edge
Estimated Product Cost
Potential Market for Bicycle ABS
• Professional Athletes
• training bicycle
• Novice Cyclist
• Everyday Commuters
• Electric scooters
Professional Athletes
Professional Athletes
Novice cyclists
Everyday Commuters
Electric Scooters
Other potential market
• Mountain Bike Riders
• Youth
• Bicycle rental retail stores
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
• light weight
• lower power consumption
• autonomous
• more features
front-wheel speed monitoring
heart rate monitor
statistics
USB interface
rear view camera
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].
Questions ?
System Block Diagram
Overall Electronics
Schematic
Team Work