EE Capstone Spring 2008 Team RFID Mike Gauthiere Mike Loptien Chris Reid Kirk Spowart Vincent Wu
What are RFID tags? <ul><li>Two different kinds: transponders and beacons </li></ul><ul><li>Passive tags or transponders a...
What are RFID tags? <ul><li>Beacons or active tags send a signal with a unique identifier at preset intervals, anywhere fr...
What will we do with RFID technology? <ul><li>We will create a General Purpose Handheld RFID reader </li></ul><ul><li>This...
What will we do with RFID technology? <ul><li>Audio information will also be output through a standard stereo jack on the ...
Artist’s Rendering #1 of RFID Reader
Artist’s Rendering #2 of RFID Reader
Artist’s Rendering #3 of RFID Reader
Real World Applications <ul><li>Museums </li></ul><ul><li>Zoos </li></ul><ul><li>Grocery Stores </li></ul><ul><li>GPS Trip...
Required Function List <ul><li>Sense and read all RFID tags in vicinity </li></ul><ul><li>Retrieve information tied to sen...
Optional Function List <ul><li>Standards compliant device, works with off-the-shelf standardized RFID tags </li></ul><ul><...
Block Diagram
Implementation of Hardware <ul><li>Processor:  ARM 7 </li></ul><ul><ul><li>May be needed to handle high data volume for sc...
Implementation of Hardware <ul><li>RFID tags: 125 kHz passive (ISO 18000-2) </li></ul><ul><ul><li>Simple to get started wi...
Implementation of Software <ul><li>Operating system </li></ul><ul><ul><li>Handle RFID data, touch device data, etc. </li><...
Project Budget
Schedule
Schedule <ul><li>PDR: initial design </li></ul><ul><li>CDR: order components, PCB design, board & processor familiarizatio...
Division of Responsibilities <ul><li>Embedded systems & microprocessors: Mike L/Mike G </li></ul><ul><li>Power & batteries...
Potential Risks of Project <ul><li>Risk #1:  No previous experience with RFID technology </li></ul><ul><li>Recovery plan #...
Potential Risks of Project <ul><li>Risk #3:  RFID and GPS technology can be expensive </li></ul><ul><li>Recovery plan #3: ...
Potential Risks of Project <ul><li>Risk #5: Possible touch screen feasibility issues </li></ul><ul><li>Recovery plan #5: u...
Feasibility of Project <ul><li>RFID communication is a simple concept, so our project can have various degrees of complexi...
Questions???
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512 kB PowerPoint - University of Colorado at Boulder

  1. 1. EE Capstone Spring 2008 Team RFID Mike Gauthiere Mike Loptien Chris Reid Kirk Spowart Vincent Wu
  2. 2. What are RFID tags? <ul><li>Two different kinds: transponders and beacons </li></ul><ul><li>Passive tags or transponders are activated when receiving a signal from a reader, such as the toll payment system on E-470 </li></ul><ul><li>Powered by the RFID reader </li></ul><ul><li>Range from centimeters (ISO 14443) to a few meters (ISO 18000-6) to possibly a few hundred meters with new Hitachi chip </li></ul><ul><li>Features non-volatile, writable EEPROM to store data </li></ul>
  3. 3. What are RFID tags? <ul><li>Beacons or active tags send a signal with a unique identifier at preset intervals, anywhere from once every few seconds to once a day depending on how important it is to know the location </li></ul><ul><li>The beacon’s signal is often picked up by at least three different reader antennas to give accurate location information </li></ul><ul><li>Powered by battery life of ~ 10 years </li></ul><ul><li>Range of hundreds of meters </li></ul><ul><li>Features non-volatile writable EEPROM with more functionality inside than passive tags </li></ul>
  4. 4. What will we do with RFID technology? <ul><li>We will create a General Purpose Handheld RFID reader </li></ul><ul><li>This reader will be able to read RFID tags placed in multiple locations </li></ul><ul><li>The reader will look up information related to these tags from a database stored on an SD card </li></ul><ul><li>If the information is not found in memory, the reader will attempt to download the information via WIFI connection </li></ul><ul><li>The information will be displayed in a user-friendly format on a touch screen LCD display </li></ul>
  5. 5. What will we do with RFID technology? <ul><li>Audio information will also be output through a standard stereo jack on the reader that can be used with headphones </li></ul><ul><li>There will be an option to select which tag’s information to display out of all those in proximity </li></ul><ul><li>Signal triangulation could be used to sense direction and distance to the detected tags </li></ul>
  6. 6. Artist’s Rendering #1 of RFID Reader
  7. 7. Artist’s Rendering #2 of RFID Reader
  8. 8. Artist’s Rendering #3 of RFID Reader
  9. 9. Real World Applications <ul><li>Museums </li></ul><ul><li>Zoos </li></ul><ul><li>Grocery Stores </li></ul><ul><li>GPS Trips through State/National Parks </li></ul><ul><li>Highway Signs </li></ul>
  10. 10. Required Function List <ul><li>Sense and read all RFID tags in vicinity </li></ul><ul><li>Retrieve information tied to sensed ID’s from database </li></ul><ul><li>Database stored on SD card or downloaded through WIFI connection </li></ul><ul><li>User-friendly graphical interface, possibly touch screen controlled </li></ul>
  11. 11. Optional Function List <ul><li>Standards compliant device, works with off-the-shelf standardized RFID tags </li></ul><ul><li>Ability to read both passive and active RFID tags </li></ul><ul><li>Ability to evaluate approximate distance from tags using signal strength or triangulation </li></ul><ul><li>Ability to read information from sensor type RFID tags </li></ul>
  12. 12. Block Diagram
  13. 13. Implementation of Hardware <ul><li>Processor: ARM 7 </li></ul><ul><ul><li>May be needed to handle high data volume for screen </li></ul></ul><ul><li>RFID transceiver: ID-12 </li></ul><ul><ul><li>125 kHz module w/ RS232 Interface & Built-in antenna </li></ul></ul><ul><li>Screen: Sharp 4.3” 24bit Sony PSP screen </li></ul><ul><ul><li>High resolution color screen for user friendlyness </li></ul></ul><ul><li>Touch sensor: 4-wire resistive layer </li></ul><ul><ul><li>Designed to match size of PSP screen </li></ul></ul><ul><li>Battery: 7.4 V 2000 mAH 2 cell LiPo </li></ul><ul><ul><li>Lightweight & space efficient, excellent capacity </li></ul></ul><ul><ul><li>Should be able to handle power needs & give good battery life </li></ul></ul>
  14. 14. Implementation of Hardware <ul><li>RFID tags: 125 kHz passive (ISO 18000-2) </li></ul><ul><ul><li>Simple to get started with </li></ul></ul><ul><ul><li>Would like to be able to read other standardized RFID tags after success with this one. (Active tags & other passive tags) </li></ul></ul><ul><li>Memory: 1 GB SD memory card </li></ul><ul><ul><li>Non-Volatile & ubiquitious </li></ul></ul><ul><li>To Be Determined: </li></ul><ul><ul><li>Audio controller/D to A converter </li></ul></ul><ul><ul><li>WIFI controller </li></ul></ul>
  15. 15. Implementation of Software <ul><li>Operating system </li></ul><ul><ul><li>Handle RFID data, touch device data, etc. </li></ul></ul><ul><li>User Interface </li></ul><ul><ul><li>Friendly </li></ul></ul><ul><ul><li>Graphics intensive </li></ul></ul><ul><ul><li>Interpretation of touch information </li></ul></ul><ul><li>Local Database: XML File </li></ul><ul><ul><li>Human Readable, Standardized </li></ul></ul><ul><li>Online Database </li></ul><ul><ul><li>Web Server Running PHP Interface to MySQL Database </li></ul></ul><ul><ul><li>Send HTTP Response, receive XML formated file </li></ul></ul>
  16. 16. Project Budget
  17. 17. Schedule
  18. 18. Schedule <ul><li>PDR: initial design </li></ul><ul><li>CDR: order components, PCB design, board & processor familiarization, begin hardware modules </li></ul><ul><li>Milestone 1: finish RFID transceiver, memory and screen interface, tag ID database </li></ul><ul><li>Milestone 2: finish touch screen interface, identify higher priority tags </li></ul><ul><li>Expo: finish WIFI interface, audio output, web database </li></ul>
  19. 19. Division of Responsibilities <ul><li>Embedded systems & microprocessors: Mike L/Mike G </li></ul><ul><li>Power & batteries: Chris/Mike G </li></ul><ul><li>RF & antennas: Kirk/Mike L </li></ul><ul><li>Circuit construction: Chris/Vince </li></ul><ul><li>Low level software: Kirk/Mike L </li></ul><ul><li>High level software: Vince/Mike G/Chris </li></ul><ul><li>Communications: Kirk </li></ul>
  20. 20. Potential Risks of Project <ul><li>Risk #1: No previous experience with RFID technology </li></ul><ul><li>Recovery plan #1: Professor Mihran has a lot of experience with RFID technology, so would be a good resource </li></ul><ul><li>Risk #2: Possible reader confusion in presence of many different RFID tags </li></ul><ul><li>Recovery plan #2: additional programming may be needed to create an anti-collision algorithm </li></ul>
  21. 21. Potential Risks of Project <ul><li>Risk #3: RFID and GPS technology can be expensive </li></ul><ul><li>Recovery plan #3: many possible sources of funding available such as UROP grants </li></ul><ul><li>Risk #4: Difficulty in calculating the distance between RFID reader and tag </li></ul><ul><li>Recovery Plan #4: Use other methods of assigning priority, could be left out if time is limited </li></ul>
  22. 22. Potential Risks of Project <ul><li>Risk #5: Possible touch screen feasibility issues </li></ul><ul><li>Recovery plan #5: use soft buttons instead of a touch screen </li></ul>
  23. 23. Feasibility of Project <ul><li>RFID communication is a simple concept, so our project can have various degrees of complexity depending on time </li></ul><ul><li>Many different options available such as touch screen interface, GPS integration, WIFI, etc. </li></ul><ul><li>Many RFID peripherals and reader chips exist and are easy to use </li></ul>
  24. 24. Questions???

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