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Robert Rebich Brandon Aldecoa Anas Hussain. Sponsored by:. Team ThumbStart. 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. Project Background.
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Robert Rebich Brandon Aldecoa Anas Hussain Sponsored by: Team ThumbStart
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 Project Background
Implement fingerprint scanner to be used for ignition of a motorcycle Train multiple users Reliability Ability to withstand road conditions Security Project Definition
Project Costs • Design Budget: ~$2000 • Keep total system cost under $150
Stand alone scanner vs. embedded scanner • Various types • Optical • Thermal • Capacitive • Electric field Various Scanners
Thermal Scanner 3.3 V power input Scanner operative range (-40 to 85⁰C) Module operating range (0 to 70⁰C) Store 1900 Unique Finger Prints SFM3010-FC
Currently working with ATmega48 AVR series very similar: code easily ported Flexibility with memory, I/O, cost Operating voltage range (2.7V – 5.5V) ATMEL AVR
Voltage Regulation • Possible options • Zener diode voltage regulation • Off the shelf regulator • LM2937IMP-3.3CT-ND
Interfaces between AVR and scanner DSP • Toggling GPIO pins (on DSP) • Serial communication • USART0 • Commands • Send (AVR to DSP) • Enroll • Identify • Delete • Receive (DSP to AVR) • Succeed • Fail Communication Suprema DSP Success, Failure Enroll, Identify, Delete ATMEL AVR
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 Radio Frequency Ignition Control
Unique code with every unit • inputs code using the keypad • begin the enroll process • User capable of programming own unique code • User trained: system ready for use • New user: repeat enrolling Training
Early stage • Decision about choice of AVR chip • Number of I/O ports • 11-13 I/O • Size of final program • Choose ATMEGA48 • Placing • Under seat • Keypad over the rest of the electronics • Possibly removable • Packaged • Survive harsh environmental conditions • Easy to mount • Hidden scanner • Small size Packaging and Positioning
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 On Going Issues
QUESTIONS OR COMMENTS? Thank You