WaterWell Online Water Quality Management - CSD Fall 2008 WaterWell Solution Online Water Quality Management

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WaterWell Online Water Quality Management - CSD Fall 2008 WaterWell Solution Online Water Quality Management

WaterWell Online Water Quality Management - CSD Fall STATEMENT PROBLE M

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

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

WaterWell Online Water Quality Management - CSD Fall 2008 Previous Work

WaterWell Online Water Quality Management - CSD Fall CONTRIBUT ION UNIQUE

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

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

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

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

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

WaterWell Online Water Quality Management - CSD Fall 2008 How does it work ?

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

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

WaterWell Online Water Quality Management - CSD Fall 2008 Wake-Up Mechanism

Wake-up Mechanism Sensor

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?

WaterWell Online Water Quality Management - CSD Fall 2008 Experiment Set-up SenderReceiver 1000 packets (1, 40, 80, 120 bytes) -31dBm 100 different distances

WaterWell Online Water Quality Management - CSD Fall 2008 LQI Results PRR grows with LQI increases

WaterWell Online Water Quality Management - CSD Fall 2008 SAMPLES 15 Samples: tradeoff between network overhead and LQI accuracy

WaterWell Online Water Quality Management - CSD Fall 2008 CONCLUSION Use LQI Use min. 15 Samples

Power Experiment SenderReceiver 500 packets (containing output power value) -32 to 31 dBm 7 different distances

OUTPUT POWER vs LQI LQI dbm -24 dbm

POWER ADJUSTMENT Base station helps SunSPOT to adjust output power Speed up negotiation: –Adjust power between 22 power steps –Dichotomy

WaterWell Online Water Quality Management - CSD Fall 2008 Aspect 4.4. Business

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

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

WaterWell Online Water Quality Management - CSD Fall 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 Wake - Up Mechanism Athanasios Floros Manzoor Bahader Link Quality Experiment Tao Sun Zhichao Cao Design Documents Chen Huang Project Manager & Business Opportunities Gökhan Dogan

WaterWell Online Water Quality Management - CSD Fall 2008 WaterWell Solution Questions and Answers

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