1. Electrical & Computer Engineering Mid-Course Design Review Anh-Vu Huynh Timothy Levernoch Samuel Patterson Christopher Ramonetti Advisor: Professor Siqueira RFID Locator

2. 2 Electrical & Computer Engineering Background & Motivation  The idea that “smaller is better” Cell phones MP3 players  The loss of smaller-sized objects has always been a concern.  Already existing solutions None of them are economical  RFID Locator Proliferation of cell phones and PDA’s Inexpensive to implement

3. 3 Electrical & Computer Engineering Existing Technology  Non-RF Response to whistle or clap False alarms Short distances Requires batteries for tags Tag only a few items per locator  RF Expensive Require base station and many readers

4. 4 Electrical & Computer Engineering Why is this Hard/Interesting?  Portability Small enough to carry around  Power Sensor has a long battery life Limit the amount of transmissions and transmission size Measure response power Tags do not require batteries  Transmission collisions  Cost Under-cut current solutions

5. 5 Electrical & Computer Engineering MDR Specifications  Refined specifications and design schematic for the RFID "black box"  Specific model numbers for major components of "black box"  Model of tag with operating frequency  Outline of software for Blackberry with flow chart  Software prototype for Blackberry software

6. 6 Electrical & Computer Engineering Principles of Operation  RFID Locator interfaces with a Blackberry 7290 smartphone via USB port.  An object is associated with the tag’s ID through the Blackberry by the user.  Upon the user’s request, the RFID Locator will indicate the approximate location through an audible and visual signal.

7. 7 Electrical & Computer Engineering Block Diagram RF Front-end EM4298 RFID Reader IC USB Cable “RFID Reader” RFID Tag Air Interface USB Controller Blackberry Smartphone PIC18LF4220 Microcontroller User Input USB Port Keyboard Power Meter & Audio Signal Software Legend Information Signal Control Signal

8. 8 Electrical & Computer Engineering Hardware Design

9. 9 Electrical & Computer Engineering Software Flow Chart

10. 10 Electrical & Computer Engineering Software Outline

11. 11 Electrical & Computer Engineering Hardware Design Expenses ItemCost (Single)Cost (Bulk) Atmega327.904.60 PDIUSBD123.491.94 Alien Gen2 Tag0.460.22 EM429810.157.86 Oscillators, Filters, and amplifiers for RF network <20.00 USB-bus w/power supply and clock 19.99N/A Additional Passive Components <2.00 Total

12. 12 Electrical & Computer Engineering Future Tasks  Board Layout  RF network Antenna Design  Verify Interfaces  Create Power Sensing Software

13. 13 Electrical & Computer Engineering QUESTIONS OR COMMENTS?