Digital Door Assistant DDA

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Digital Door Assistant (DDA)
Senior Design May 7, 2002
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DDA Design Team Senior Design Group 11

• Technical Advisor
• Professor Hong Man

• Group Leader
• David Labarbera

• Group Members
• Cindy Budhu
• Brian Iovino
• Joseph Rafaniello

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Bioscrypt
TM
We would like to give a special thanks to
Bioscrypt for donating the Software Development
Kit (SDK), OEM support, and other meaningful
advice.
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Abstract

• Basic home security has not changed.
• Lock and key system is archaic.
• New technologies can help security move beyond
  the antiquated system of lock and key.
• Memorization adds security.
• Passwords can be forgotten, shared, observed

• Most effective security is Biometrics.
• Fast and user-friendly authentication
• High level of accuracy

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Design Objectives

• Improve home security and accessibility.
• Provide a reliable and more secure substitute for
  key.
• Digital Door Assistant
• Alternative to archaic key-entry door systems
• Utilize accurate fingerprint identification
• Perform as an embedded system

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FLOWCHART
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Project Components

• Fingerprint Scanner
• Code
• Electronics
• Doorbell
• Lock
• Keypad

Final assembly
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Fingerprint Scanner

• Bioscrypt only sent us a 11 verify unit
• The algorithm goes through each template and
  verifies the finger versus it.
• This causes the delay while verifying.
• Even with the verify unit, this prototype is
  usable for most households of 6 or less.
• Baud rate
• Default rate 57600
• MCU doesnt support 57600
• Firmware
• An update from Bioscrypt was needed

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Code
Assembly programming

• C
• Easier to program with
• More robust
• Not Compatible with hardware
• Assembly
• Lower level language
• More coding
• Compatible with hardware

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Problems encountered with code

• Had no display on HC11
• PC simulators help debug algorithms
• Not able to view MV1200 response packet
• Problems with C Compiler
• Troubleshooting took up too much time
• Troubles with C compiler interfacing with
  hardware
• Delays in assembly

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Electronics
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Prototype Performance and Evaluation

• Fully functional prototype
• Delays
• More users more delays
• Limitations
• Weather
• Power supply

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Future Developments

• Utilize the Identify MV1200 unit
• Add a LCD display to show status and
  administration
• Add a 0-9 keypad to allow for numbering of users
• Record data log of door access
• Weatherproofing
• Aesthetics

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Project Budget
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Project Schedule
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Conclusion

• Project works and is original
• Plan on developing it further
• Talks about a patent

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Any Questions?