Waterwell Midterm Presentation

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

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Waterwell Midterm Presentation

  1. 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. 2. WaterWell Online Water Quality Management - CSD Fall 2008 1 . STATEMENT PROBLEM
  3. 3. WaterWell Online Water Quality Management - CSD Fall 2008 Blantyre, Malawi
  4. 4. WaterWell Online Water Quality Management - CSD Fall 2008 Technology vs. Problem K.O <ul><li>WSN </li></ul><ul><li>Sensors </li></ul><ul><li>Sun SPOTs </li></ul><ul><li>Solar Panel </li></ul><ul><li>Automation </li></ul><ul><li>Accurate Results </li></ul><ul><li>Wide-Area </li></ul><ul><li>Power Source </li></ul>
  5. 5. WaterWell Online Water Quality Management - CSD Fall 2008 Previous Work
  6. 6. WaterWell Online Water Quality Management - CSD Fall 2008 2 . CONTRIBUTION UNIQUE
  7. 7. WaterWell Online Water Quality Management - CSD Fall 2008 Reading Serial Data
  8. 8. WaterWell Online Water Quality Management - CSD Fall 2008 Testing The Connection <ul><li>Two Java Programs (NetBeans) </li></ul><ul><ul><li>To read data from sensor through serial port, forward to base station and vice versa </li></ul></ul><ul><ul><li>To switch on & off the level converter (Sensor) through H0 pin </li></ul></ul>
  9. 9. WaterWell Online Water Quality Management - CSD Fall 2008 Real-Life
  10. 10. WaterWell Online Water Quality Management - CSD Fall 2008 Consumption 3 . POWER
  11. 11. WaterWell Online Water Quality Management - CSD Fall 2008 WaterWell System <ul><li>Host Station </li></ul><ul><li>Send HELLO </li></ul><ul><li>Synchronization </li></ul><ul><li>Configuration </li></ul><ul><li>Gathering data </li></ul><ul><li>WSN Node </li></ul><ul><li>Reading data from sensor </li></ul><ul><li>Sending data to base station </li></ul>
  12. 12. WaterWell Online Water Quality Management - CSD Fall 2008 How does it work ?
  13. 13. WaterWell Online Water Quality Management - CSD Fall 2008 System Diagrams Sequence Diagram State Transition Diagram
  14. 14. WaterWell Online Water Quality Management - CSD Fall 2008 Power Consumption Issues <ul><li>Problems: </li></ul><ul><ul><li>Sustainability </li></ul></ul><ul><ul><li>Sensors’ Power </li></ul></ul><ul><li>Solutions: </li></ul><ul><ul><li>Solar Panel </li></ul></ul><ul><ul><li>Wake U p M echanism </li></ul></ul><ul><ul><li>Power A djustment </li></ul></ul>
  15. 15. WaterWell Online Water Quality Management - CSD Fall 2008 Wake-Up Mechanism
  16. 16. Wake-up Mechanism Sensor
  17. 17. WaterWell Online Water Quality Management - CSD Fall 2008 Link Quality Experiment <ul><li>PRR: Packet Received Ratio </li></ul><ul><li>The real link quality </li></ul><ul><li>Parameters: </li></ul><ul><li>LQI: Link Quality Indicator </li></ul><ul><li>RSSI: Received Signal Strength Indication </li></ul><ul><li>CORR: Correlation </li></ul><ul><li>Which one is the best? </li></ul><ul><li>How many samples? </li></ul>
  18. 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. 19. WaterWell Online Water Quality Management - CSD Fall 2008 LQI Results PRR grows with LQI increases
  20. 20. WaterWell Online Water Quality Management - CSD Fall 2008 SAMPLES 15 Samples : tradeoff between network overhead and LQI accuracy
  21. 21. WaterWell Online Water Quality Management - CSD Fall 2008 <ul><li>CONCLUSION </li></ul><ul><li>Use LQI </li></ul><ul><li>Use min. 15 Samples </li></ul>
  22. 22. Power Experiment Sender Receiver 5 00 packets ( containing output power value ) -3 2 to 31 dBm 7 different distances
  23. 23. OUTPUT POWER vs LQI LQI 200 -25 dbm -24 dbm
  24. 24. <ul><li>POWER ADJUSTMENT </li></ul><ul><li>Base station helps SunSPOT to adjust output power </li></ul><ul><li>Speed up negotiation: </li></ul><ul><ul><li>Adjust power between 22 power steps </li></ul></ul><ul><ul><li>Dichotomy </li></ul></ul>
  25. 25. WaterWell Online Water Quality Management - CSD Fall 2008 Aspect 4 . Business
  26. 26. WaterWell Online Water Quality Management - CSD Fall 2008 BUSINESS Assessment Report B
  27. 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. 28. 30 Second Summary <ul><li>WSN offers many possibilities </li></ul><ul><li>Sun SPOT Rocks ! </li></ul><ul><li>LQI is the best ! </li></ul><ul><li>Min. 15 Samples </li></ul><ul><li>Deep Sleep Mode </li></ul><ul><li>Everything is under control </li></ul>WaterWell Online Water Quality Management - CSD Fall 2008
  29. 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. 30. WaterWell Solution Questions and Answers WaterWell Online Water Quality Management - CSD Fall 2008

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