www.intel.com/research RFID and Sensor Networks


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www.intel.com/research RFID and Sensor Networks

  1. 1. RFID and Sensor Networks Ralph Kling Joshua Smith Intel Corporation Research
  2. 2. Environment <ul><li>Commercial RFID infrastructure is rapidly being built </li></ul><ul><ul><li>Standards have emerged </li></ul></ul><ul><li>Sensor Networks are a few years behind RFID in commercial rollouts </li></ul><ul><ul><li>Standards are still in flux </li></ul></ul><ul><li>There are numerous similarities between the two: </li></ul><ul><ul><li>Distributed data collection and database management </li></ul></ul><ul><ul><li>Opportunity for Sensor Network developers to learn from the RFID experiences and to achieve synergy wrt. standards </li></ul></ul>
  3. 3. Synergy between RFID and SN <ul><li>RFID readers can be viewed as yet another type of sensor within a Sensor Network </li></ul><ul><ul><li>Many existing RFID installations also use other sensors </li></ul></ul><ul><ul><li>There is a need for correlation of the different data streams </li></ul></ul><ul><li>There is a hierarchy of increasing capabilities starting with passive RFID tags via active tags all the way to Motes and Gateways </li></ul><ul><ul><li>Application developers can choose what fits their needs best </li></ul></ul><ul><ul><li>Software infrastructure should support this seamlessly </li></ul></ul><ul><li>RFID tags can act as sensors as well </li></ul>
  4. 4. Convergence Examples <ul><li>Intel Research Seattle wireless Data Glove </li></ul><ul><ul><li>The data glove is a combination of a Mote and a low power RFID reader </li></ul></ul><ul><ul><li>Future: Networks of RFID readers and other sensors </li></ul></ul><ul><ul><ul><li>Distributed software that integrates and processes multi-sensor data streams </li></ul></ul></ul>
  5. 5. Convergence Examples <ul><li>Intel Research Seattle Wireless Identification and Sensing Project (WISP) </li></ul><ul><ul><li>WISP is a family of EPC-compatible RFID sensors that work today </li></ul></ul><ul><ul><li>Future: WISPnets </li></ul></ul><ul><ul><ul><li>Protocols to support sensing & ID anti-collision </li></ul></ul></ul>RFID 2 RFID 1 Antenna Hg Hg
  6. 6. WISP Project Phases <ul><li>Practical integration of RFID & Sensors that works now </li></ul><ul><li>Step 0:  WISP wireless, battery-free one bit accelerometer </li></ul><ul><ul><li>Acceleration or tilt causes unit to return a different ID </li></ul></ul><ul><li>Step 1: ID Modulation. Sensor tag switches between two IDs in pattern over time. This enables new sensing functionality, while maintaining compatibility with existing readers & protocols. </li></ul><ul><li>Step 2: WISPnets. Tags, readers, and protocols that support both Identification (anti-collision) and Sensing </li></ul>
  7. 7.  -WISP working Blue trace: X-axis acceleration as measured by wired commercial accelerometer Red trace: One bit X-axis acceleration as measured by  -WISP
  8. 8. ID Modulation <ul><li>915 MHz power harvesting circuit </li></ul><ul><li>Ultra low power  Controller connected to sensor </li></ul><ul><li>Two EPC-standard RFID chips </li></ul><ul><li>By enabling/disabling tag 1 / tag 0, controller can embed sensor data in pre-existing, standards-compliant RFID channel </li></ul>RFID Tag 1 RFID Tag 2 Microcontroller & Sensor Power Harvesting WISP “ ID 1” “ ID 2” “” erasure No ID 1 0 e Time (s)
  9. 9. Relevant Intel Products and Research Platforms <ul><li>Intel Motes </li></ul><ul><ul><li>ARM and XScale based advanced Sensor Network nodes </li></ul></ul><ul><li>Intel Gateway “Stargate” </li></ul><ul><ul><li>XScale based gateway for Sensor Networks </li></ul></ul><ul><li>Sensor Network Software </li></ul><ul><ul><li>TinyOS and Linux based SW infrastructure to support RFID and Sensor Networks </li></ul></ul>Stargate Intel ® Mote
  10. 10. Heterogeneous networking I I I I S I I I I I I I I I I I I I I I I S S I I I I I I I I S Imote Stargate 802.11 BT
  11. 11. Summary and Outlook <ul><li>Intel is conducting research and investigating product opportunities for the combined RFID and Sensor Network space </li></ul><ul><li>Platforms such as the Intel Motes and Gateway can be used to develop pilot applications in this area </li></ul><ul><li>Intel would like to participate in the industry standardization process for combined RFID and Sensor Network applications </li></ul>