1. WaterWell Final Presentation  Athanasios Floros  Chen Huang  Gökhan Dogan  Manzoor Bahader  Tao Sun  Zhichao Cao Csd 2008 Fall http://www.tslab.ssvl.kth.se/csd/projects/0821006/

2. WaterWell Online Water Quality Management - CSD Fall 2008 Midterm Summary

3. WaterWell Online Water Quality Management - CSD Fall 2008 WaterWell Solution Online Water Quality Management http://www.tslab.ssvl.kth.se/csd/projects/0821006

4. WaterWell Online Water Quality Management - CSD Fall 2008 1.1. STATEMENT PROBLE M

5. WaterWell Online Water Quality Management - CSD Fall 2008 Blantyre, Malawi

6. 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

7. WaterWell Online Water Quality Management - CSD Fall 2008 Previous Work

8. WaterWell Online Water Quality Management - CSD Fall 2008 Reading Serial Data

9. 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

10. WaterWell Online Water Quality Management - CSD Fall 2008 Real-Life

11. WaterWell Online Water Quality Management - CSD Fall 2008 Consumption 3.3. POWER

12. 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

13. WaterWell Online Water Quality Management - CSD Fall 2008 System Diagrams Sequence DiagramState Transition Diagram

14. WaterWell Online Water Quality Management - CSD Fall 2008 Power Consumption Issues Problems: Sustainability Sensors’ Power Solutions: Solar Panel Wake Up Mechanism Power Adjustment

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 SenderReceiver 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 SenderReceiver 500 packets (containing output power value) -32 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 4.4. Business

26. WaterWell Online Water Quality Management - CSD Fall 2008 BUSINESS Assessment Report B

27. WaterWell Online Water Quality Management - CSD Fall 2008 Nästa: Implementation Investigation Marco’s Tasks Design Documents T Solar Panel Business Opportunities Implementation Final Reports Testing

28. WaterWell Online Water Quality Management - CSD Fall 2008 Midterm Results  WSN offers many possibilities  Sun SPOT Rocks !  LQI is the best !  Min. 15 Samples  Deep Sleep Mode

29. WaterWell Online Water Quality Management - CSD Fall 2008 The Story of Lonely Machines  SunSPOT  90-FLT and Sensor Probes  eSerial converter

30. WaterWell Online Water Quality Management - CSD Fall 2008 SunSPOT

31. WaterWell Online Water Quality Management - CSD Fall 2008 Anatomy of a SunSPOT  Two types Base station Free Range devices  SunSPOT Parts Sensor Board Processor Board Battery

32. WaterWell Online Water Quality Management - CSD Fall 2008 90-FLT

33. WaterWell Online Water Quality Management - CSD Fall 2008 Sensor Probes  TDS, PH, mV, Turbidity, Conductivity, Dissolved oxygen and Temperature

34. WaterWell Online Water Quality Management - CSD Fall 2008 eSerial converter

35. WaterWell Online Water Quality Management - CSD Fall 2008  RS232 Interface  Connects SunSPOT & 90-FLT eSerial converter

36. WaterWell Online Water Quality Management - CSD Fall 2008 Schematic of the Connection

37. WaterWell Online Water Quality Management - CSD Fall 2008 How did we come together? Base Station Free Range SPOT Sensor Probes 90-FLT Meter

38. WaterWell Online Water Quality Management - CSD Fall 2008 We need Software  Software – Classes  Software – Communication  Software – System Life Loop

39. WaterWell Online Water Quality Management - CSD Fall 2008 Software-Classes  HostStation Class Runs on PC Data center and configure center  WSNNode Class Runs on free-range Sun SPOT Data fetcher and transmitter  Node Class Represent WSN nodes  Message Classes Carrier of radio signal Five types: Hello, Syn, Ack, Data, ConfTime

40. WaterWell Online Water Quality Management - CSD Fall 2008 Software-Communication

41. WaterWell Online Water Quality Management - CSD Fall 2008 Software-System Life Loop  Wake Up Mechanism

42. WaterWell Online Water Quality Management - CSD Fall 2008 We Consume Power  SunSPOT Power Consumption  System Power Consumption

43. WaterWell Online Water Quality Management - CSD Fall 2008 Sun SPOT Power Consumption  Power adjustment mechanism Adjust radio output power for saving energy  Sun SPOT power consumption experiment To test if output power affects whole power consumption a lot 50000 and 100000 packets Broadcast and Unicast In 0m distance With Max(31) and Min(-32) power SenderReceiver

44. WaterWell Online Water Quality Management - CSD Fall 2008 Sun SPOT Power Consumption Conf. BroadcastUnicast Transmission power 50000 packets 100000 packets 50000 packets 100000 packets -32 dbm 11.356 mAh 21.843 mAh 16.108 mAh 30.918 mAh +31 dbm 11.496 mAh 22.023 mAh 16.610 mAh 31.615 mAh  Limited energy is saved Radio consumes Besides, CPU, memory control, E-demoboard consumes energy  Power adjustment mechanism is unworthy

45. WaterWell Online Water Quality Management - CSD Fall 2008 System Power Consumption Conf.  Wake-up mechanism is the only way  Test objects Basestation Sun SPOT powered by PC Level Converter powered by Free-range Sun SPOT Only power consumption of Free-range Sun SPOT and 90-FLT meter is consıdered  Test scenario Test for 4 days continuously 60 measurements per day With and without wake-up mechanism

46. WaterWell Online Water Quality Management - CSD Fall 2008 System Power Consumption Conf.

47. WaterWell Online Water Quality Management - CSD Fall 2008 System Power Consumption Conf.  System life depends on Sun SPOT life  Normally, the system works for more than 3 weeks Sun SPOT and 90-FLT lives in days

48. WaterWell Online Water Quality Management - CSD Fall 2008 Features  System Life Lasts for approximately 3 weeks  Wake-up Mechanism Synchronization Periodically wake up

49. WaterWell Online Water Quality Management - CSD Fall 2008 Features Cont.  Automation No human interaction is needed  Node Feedback Node status: able to detect node failure Battery information: both Sun SPOT and 90-FLT

50. WaterWell Online Water Quality Management - CSD Fall 2008 Features Cont.  Packet Retransmission  MAC layer (unicast only) and Application layer  Cope with instability and abnormality of radio.  Fragmentation  MAC layer fragmentation always causes delay when deep sleeping.  Large packet is fragmented.  Fragment out of order.

51. WaterWell Online Water Quality Management - CSD Fall 2008 Market Overview Of WSN

52. WaterWell Online Water Quality Management - CSD Fall 2008 Customers in Malawi

53. WaterWell Online Water Quality Management - CSD Fall 2008 Whole Product

54. WaterWell Online Water Quality Management - CSD Fall 2008  The Swedish Environmental Protection Agency (SEPA)  Swedish University of Agricultural Sciences, Department of Environmental Assessments (SUAS)  Åbro to analyze the water quality for beer-brewing.  Alfa Laval to use in wastewater treatment and analyze the waste water. Potential Customers in Sweden

55. WaterWell Online Water Quality Management - CSD Fall 2008 How did we achieve ?  Website “Really excited to have my own place to post my latest activities.” Cao  Sub-Teams Member Rotation  Write it down! Deliverables  Walk the Extra Mile ! Scientific Paper

56. WaterWell Online Water Quality Management - CSD Fall 2008 30 Sec Recap.  Automated and Reliable  Sun SPOT battery is not sustainable  Wake-up Mechanism saves power  WSN is not mature yet  Happy New Year !

57. WaterWell Online Water Quality Management - CSD Fall 2008 Q & A