BuzzCard Access System for Westminster Christian Fellowship Ayush Samantroy Dan van Kley Adam Sakautzky Matt 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 Specifications Proposed 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 SBC Door Strike Magnetic Card Reader 12V 5V 12V 5V Data Power

Capture and Compare Hash Magnetic card is swiped SBC 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

Power Schematic

Demonstration Objectives: Allow access with valid card only Generate accurate access log Administer system via web browser Operate system on battery backup Quality 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

Budget ComponentProjectedActual 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 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

Questions?