buzzcard access system for westminster christian fellowship ayush samantroy dan van kley adam...
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BuzzCard Access System for Westminster Christian Fellowship
Ayush SamantroyDan van Kley
Adam SakautzkyMatt Habib
ECE 4007 L01
April 23, 2008
Overview
• Magnetic card access system• Scheduling abilities• Database of active users• Audit trail• Web-based administration• Total cost for 5 doors including labor: $8,299
Technical SpecificationsProposed
• ISO 7810/7811 compliance• 5 second response time• 5% false negative rate• Automated offsite backup• 12 hour battery backup
Achieved• ISO 7810/7811 compliance• 1 second response time• 3% false negative rate• Manual offsite backup• 12 hour battery backup• Scheduling
System Layout
Power Source
Regulator Circuit
SBCDoor Strike
Magnetic Card
Reader
12V 5V
12V5V
Data
Power
Capture and Compare HashMagnetic card
is swipedSBC receives
card information and generates
MD5 hash
Compare hash to access list
Log Entry and Access Control
Hash and entry information is logged
If entry is allowed, strike will open for
5 seconds
Enter User Information
Have user swipe magnetic card at door
Obtain swipe information via entry log and add to
user list
Demonstration
Objectives:• Allow access with valid card only• Generate accurate access log• Administer system via web browser• Operate system on battery backupQuality Assurance:• Test false positive/negative rate
Schedule
• 1/28 – 2/18 : Configured SBC– Interfaced with laptop over FTP/Telnet
• 2/20 – 4/14 : Developed backend program– Wrote C code for integration with readers/strikes
• 3/10 – 4/16 : Developed web interface– Set up web server to interact with CSV files
• 4/23 – 5/2 : Installation– Install SBC, card readers, and door strikes
BudgetComponent Projected Actual
Magnetic Card Reader $150 (ea.) $117 (ea.)
Technologic TS-7250 SBC $150 $119
Electric locking mechanism $150 (ea.) $24 (ea.)
Electric wiring $100 $25
Conduit $50 $50
Enclosure $180 $150
Backup lead-acid battery $60 $50
Labor Cost ($30/hour x 30 hours/week x 8 weeks) $9,600 $7,200
TOTAL (for one door) $10,440 $7,735
TOTAL (for five doors) $11,640 $8,299
Current Status
Completed:• Fully featured backend
program• Web interface• Testing of integrated
system for multiple doors in lab
Pending:• Repair/replace
malfunctioning SBC• Install hardware at WCF• Establish automated
offsite backup• Test installed system for
all doors
Future Improvements
• Implement a SQL database on SBC• Implement hardware interrupts• RFID integration• Integrate with alarm system at building• Add a magnetic lock with egress system