Robert Rebich Brandon Aldecoa Anas Hussain Sponsored by:

Robert RebichBrandon Aldecoa

Anas Hussain

Sponsored by:

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

Design Budget: ~$2000 Keep total system cost under $150

Stand alone scanner vs. embedded scanner

Various types Optical Thermal Capacitive Electric field

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)

Possible options Zener diode voltage regulation

Off the shelf regulator

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

QUESTIONS OR COMMENTS?