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Waterwell Midterm Presentation

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Midterm Presentation of WaterWell Project: http://www.tslab.ssvl.kth.se/csd/projects/0821006

Midterm Presentation of WaterWell Project: http://www.tslab.ssvl.kth.se/csd/projects/0821006

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  • 1. WaterWell Solution Online Water Quality Management WaterWell Online Water Quality Management - CSD Fall 2008 http://www.tslab.ssvl.kth.se/csd/projects/0821006
  • 2. WaterWell Online Water Quality Management - CSD Fall 2008 1 . STATEMENT PROBLEM
  • 3. WaterWell Online Water Quality Management - CSD Fall 2008 Blantyre, Malawi
  • 4. WaterWell Online Water Quality Management - CSD Fall 2008 Technology vs. Problem K.O
    • WSN
    • Sensors
    • Sun SPOTs
    • Solar Panel
    • Automation
    • Accurate Results
    • Wide-Area
    • Power Source
  • 5. WaterWell Online Water Quality Management - CSD Fall 2008 Previous Work
  • 6. WaterWell Online Water Quality Management - CSD Fall 2008 2 . CONTRIBUTION UNIQUE
  • 7. WaterWell Online Water Quality Management - CSD Fall 2008 Reading Serial Data
  • 8. WaterWell Online Water Quality Management - CSD Fall 2008 Testing The Connection
    • Two Java Programs (NetBeans)
      • To read data from sensor through serial port, forward to base station and vice versa
      • To switch on & off the level converter (Sensor) through H0 pin
  • 9. WaterWell Online Water Quality Management - CSD Fall 2008 Real-Life
  • 10. WaterWell Online Water Quality Management - CSD Fall 2008 Consumption 3 . POWER
  • 11. WaterWell Online Water Quality Management - CSD Fall 2008 WaterWell System
    • Host Station
    • Send HELLO
    • Synchronization
    • Configuration
    • Gathering data
    • WSN Node
    • Reading data from sensor
    • Sending data to base station
  • 12. WaterWell Online Water Quality Management - CSD Fall 2008 How does it work ?
  • 13. WaterWell Online Water Quality Management - CSD Fall 2008 System Diagrams Sequence Diagram State Transition Diagram
  • 14. WaterWell Online Water Quality Management - CSD Fall 2008 Power Consumption Issues
    • Problems:
      • Sustainability
      • Sensors’ Power
    • Solutions:
      • Solar Panel
      • Wake U p M echanism
      • Power A djustment
  • 15. WaterWell Online Water Quality Management - CSD Fall 2008 Wake-Up Mechanism
  • 16. Wake-up Mechanism Sensor
  • 17. WaterWell Online Water Quality Management - CSD Fall 2008 Link Quality Experiment
    • PRR: Packet Received Ratio
    • The real link quality
    • Parameters:
    • LQI: Link Quality Indicator
    • RSSI: Received Signal Strength Indication
    • CORR: Correlation
    • Which one is the best?
    • How many samples?
  • 18. WaterWell Online Water Quality Management - CSD Fall 2008 Experiment Set-up Sender Receiver 1000 packets (1, 40, 80, 120 bytes) -31dBm 100 different distances
  • 19. WaterWell Online Water Quality Management - CSD Fall 2008 LQI Results PRR grows with LQI increases
  • 20. WaterWell Online Water Quality Management - CSD Fall 2008 SAMPLES 15 Samples : tradeoff between network overhead and LQI accuracy
  • 21. WaterWell Online Water Quality Management - CSD Fall 2008
    • CONCLUSION
    • Use LQI
    • Use min. 15 Samples
  • 22. Power Experiment Sender Receiver 5 00 packets ( containing output power value ) -3 2 to 31 dBm 7 different distances
  • 23. OUTPUT POWER vs LQI LQI 200 -25 dbm -24 dbm
  • 24.
    • POWER ADJUSTMENT
    • Base station helps SunSPOT to adjust output power
    • Speed up negotiation:
      • Adjust power between 22 power steps
      • Dichotomy
  • 25. WaterWell Online Water Quality Management - CSD Fall 2008 Aspect 4 . Business
  • 26. WaterWell Online Water Quality Management - CSD Fall 2008 BUSINESS Assessment Report B
  • 27. WaterWell Online Water Quality Management - CSD Fall 2008 N ä sta: Implementation Investigation Marco’s Tasks Design Documents T Solar Panel Business Opportunities Implementation Final Reports Testing
  • 28. 30 Second Summary
    • WSN offers many possibilities
    • Sun SPOT Rocks !
    • LQI is the best !
    • Min. 15 Samples
    • Deep Sleep Mode
    • Everything is under control
    WaterWell Online Water Quality Management - CSD Fall 2008
  • 29. WaterWell Online Water Quality Management - CSD Fall 2008 Wake - Up Mechanism Athanasios Floros Manzoor Bahader Link Quality Experiment Tao Sun Zhichao Cao Design Documents Chen Huang Project Manager & Business Opportunities Gökhan Dogan
  • 30. WaterWell Solution Questions and Answers WaterWell Online Water Quality Management - CSD Fall 2008