Draft Project Summary by dandanhuanghuang

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									                     ECE4884 / 4007 Project Summary

Project Title        Buzzcard Group

Team Members         Derek Bankieris (Computer Engineering)
(names and majors)   Roger Chiou (Electrical Engineering)
                     Avi Haim (Electrical Engineering)
                     Steven Kim (Electrical Engineering)
                     Jared Krichko (Computer Engineering)


Advisor / Section    Professor Whit Smith / Section L01


Semester             2008 Fall

Project Abstract               The BuzzCard Access System (BAS) will allow members of the
(250-300 words)      Westminster Christian Fellowship (WCF) to access the building using a magnetic
                     stripe card, such as a BuzzCard or ATM card. A BAS-enabled door would permit
                     users to swipe a valid card, open the door within five seconds, and enter the
                     building. A secure, off-site database will monitor system activity by keeping an
                     audit trail of access attempts. System administrators will be able to modify the list
                     of approved users by adding new or removing existing cards. In the event of a
                     power failure, the system will be supported by a backup battery.
                               Users of the WCF need a more efficient method of access control than
                     currently employed. The standard lock and key system requires monitoring the
                     distribution of keys and periodic replacement of locks and lost or stolen keys. The
                     BAS will provide WFC administrators with better control over which users are
                     granted access and allow users to utilize cards that they already carry with them.
                                This complete service can be installed at the WCF on three doors for
                     $15,700, with parts and equipment totaling $1,000 and labor costs totaling $14,700.
                     There are no maintenance related expected costs. An expansion of the system
                     would cost approximately $550 per door, including parts and labor.
Project Title               Buzzcard Group

List codes and                 Cards must adhere to ISO standards 7810, 7811, 7813, and 4909, which define
standards that                  magnetic card formats.
significantly affect your      The system will adhere to the National Electric Code NFPA 70, which governs
                                the installation of electronics.
project. Briefly describe      Ethernet wires will meet ANSI Category 5e requirements.
how they influenced            The supply power will be standard 120V AC.
your design.                   Data storage format will be comma delimited ASCII text.
                               The internet interface will employ HTTP, FTP, and SSH.




List at least two           Door threshold is made of metal making it difficult to install electric strike door
significant realistic       locks. Card type flexibility needed to be incorporated because not all users have
                            Buzzcards.
design constraints that
applied to your project.
Briefly describe how
they affected your
design.




Briefly explain two         Choice between electric door strike or magnetic lock needed to be decided. Since
significant trade-offs      the threshold was metal and hard to cut for recessed electric strikes, the magnetic
                            lock was chosen. Magnetic stripe versus RFID access was based on convenience
considered in your          and cost. The magnetic stripe reader is cheaper than the RFID reader. If a person
design, including           needs to get close to the RFID reader to deactivate the lock, one might as well
options considered and      swipe the card.
the solution chosen.




Briefly describe the        A software spin-lock is used to wait for activity from the card readers. This has the
computing aspects of        advantage of being simple, but consumes more power than using hardware
                            interrupts.
your projects,
specifically identifying    Cross compilation was used to port applications to the board as opposed to putting
hardware-software           a compiler on the board itself to save on memory resources.
tradeoffs, interfaces,
and/or interactions.

Complete if applicable;
required if team includes
CmpE majors.

								
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