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A Radio Frequency Identification (RFID)-based wireless sensor device for drug compliance measurement
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A Radio Frequency Identification (RFID)-based wireless sensor device for drug compliance measurement

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Dave Parry

Dave Parry
School of Computing and Mathematical Sciences, Auckland University of Technology
(4/11/10, Square, 10.30)

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A Radio Frequency Identification (RFID)-based wireless sensor device for drug compliance measurement A Radio Frequency Identification (RFID)-based wireless sensor device for drug compliance measurement Presentation Transcript

  • A Radio Frequency Identification (RFID)-based wireless sensor device for drug compliance measurement Alan Montefiore, Anne Philpott, Dave Parry AURA Laboratory and School of Computing and Mathematical Sciences, Auckland University of Technology, Auckland [email_address]
  • Agenda
    • Why measure compliance ?
    • Technical requirements
    • Designs
    • Results
  • Compliance with drug therapy
    • 30%-50% of patients fail to comply completely with treatment , and this is a significant clinical issue.
    • “ Secondary” non-compliance in this case, Patients have the medication, but don’t take it
    • Compliance a particular problem in the elderly, and there is no “magic bullet”
  • Technical requirements
    • Reliably detect dispensing
      • No false positive from gross movements
      • No undercounting
      • Not operator dependent
      • Distinguish between different containers
    • Small impact on routine lifestyle
    • Cheap
  • The Intel WISP
    • Wireless Identification and Sensing platform
  • WISP technology
    • Communicates via standard EPC Gen2 protocol -UHF frequency
    • Includes temperature sensors, accelerometer, voltage sensor and microprocessor
    • Not yet commercially available, accessed via “WISP Challenge”
  • Approach to design
    • Rapid application development
    • Prototype, test, refine
    • Software running on WISP microprocessor, RFID reader and host computer.
    • Agile development for software.
  • Testing
    • Initial testing of different designs
    • Reliability measured in terms of accuracy of identifying dispensing, relibility of dispensing and lack of false positives
  • Prototypes Forcing recognizable movements to identify dispensing
  • Final Design
    • Two WISPS on dispenser.
    • One rotating when dispensing one not.
    • Based on “smint” dispenser
  • Results
    • 5 Users – 100% reliability of detection
    • Mechanical system does limit dispensing
  • Problems and issues
    • WISP not fully mature – processing while out of range hard to implement
    • Copyright/ Patent issues with this design ?
    • Increased robustness required.
    • Still can be fooled – dispense and flush
  • Conclusions
    • Simple mechanical systems can be used to control dispensing.
    • RFID- based devices can be used to record activity accurately and cheaply
    • Expensive infrastructure can be used for multiple purposes
  • Future work
    • Investigate methods of recording syringe-based drug delivery
    • Improve software to allow recording outside RFID reader detection area
    • Identify methods to improve reporting to user and others.
    • Develop more robust and reusable approach for production version