robert rebich brandon aldecoa anas hussain sponsored by:
TRANSCRIPT
New cars use keyless entry Bring bikes up with that trend Remove the need for keys, cards... etc. Biometrics are getting cheaper Fingerprints are the most reliable
Implement fingerprint scanner to be used for ignition of a motorcycle
Train multiple users Reliability Ability to withstand road conditions Security
Thermal Scanner 3.3 V power input Scanner operative range (-40 to 85⁰C) Module operating range (0 to 70⁰C) Store 1900 Unique Finger Prints
Currently working with ATmega48 AVR series very similar: code easily
ported Flexibility with memory, I/O, cost Operating voltage range (2.7V – 5.5V)
Interfaces between AVR and scanner DSP Toggling GPIO pins (on DSP) Serial communication
RS422 or RS485 Commands
Send (AVR to DSP) Enroll Identify Delete
Receive (DSP to AVR) Succeed Fail
SupremaDSP
SupremaDSP
ATMEL AVRATMEL AVR
Enroll, Identify, DeleteSuccess, Failure
Use RF Engage relay Start the bike
Ease installation Replace starter relay Wirless: no problem because cable too short
Possible back up system Downside: Cost
Linx modules cost $8 to $10 per receiver and $5 to $7 per transmitter
Unique code with every unit inputs code using the keypad
begin the enroll process
User trained: system ready for use New user: repeat enrolling
Early stage Decision about choice of AVR chip
Number of I/O ports Size of final program
Placing Under seat Keypad over the rest of the electronics
Possibly removable Packaged
Survive harsh environmental conditions Easy to mount Hidden scanner Small size
Length of the ribbon cable Currently Suprema only has a two inch cable Would like to extend length to about 1ft Suprema doesn’t have longer cable Longer cable not recommend Communication issues with extended length
Heat tolerance of Suprema DSP chip Atmel AVR chips and scanner have industrial
temp. ratings, Suprema DSP doesn’t