1. 1 Ali Salehi,Karl Aberer,Manfred Hauswirth, Andreas Wombacher, Yongluan Zhou, Lei Shu, Antonio Aguilar,Gearoid Hynes, et al. http://gsn.sourceforge.net

2. 2 Today’s Isolated Sensor Networks: Set of nodes Ad-hoc routing One or more sink node Base computer Research focus:  Mote level, energy saving, routing, etc. Global Sensor Networks http://gsn.sourceforge.net ?

3. 3 Where is GSN? Sensor Network:  Sensing  In network Data/query Processing Filtering Aggregation Data Management:  Data: Management. Publishing. Expensive processing. Archives. Global Sensor Networks http://gsn.sourceforge.net Data Management Sensor Network

4. 4 Just reinventing the wheel ?  Different abstractions, hard to share.  Isolated networks, hard to republish. Global Sensor Networks http://gsn.sourceforge.net

5. 5 Global Sensor Networks http://gsn.sourceforge.net Players: Web servers (IIS/…) Web documents. Contents: ASP/HTML/CSS/… Internet

6. 6 Global Sensor Networks http://gsn.sourceforge.net Sensor Internet Players: Sensor servers (GSN). Sensor networks. Contents: Virtual sensors.

7. 7 IIS Server, container for HTML/ASP pages. GSN, container for virtual sensors. A virtual sensor, produces the content,  a real sensor, a wireless camera, a desktop computer, GPS sensor, network traffic, etc.  combination of other virtual sensors.  Logical view of the sensor network. Global Sensor Networks http://gsn.sourceforge.net

8. 8 5140 GSN Various Applications GSN Global Sensor Networks http://gsn.sourceforge.net Apache server => Web applications. GSN server => Sensor network applications.

9. 9 Global Sensor Networks http://gsn.sourceforge.net Internet: Web pages. Web services composition. Sensor Internet: Streaming sensor data. Virtual sensor composition. Sensor Data Composition

10. 10 Global Sensor Networks http://gsn.sourceforge.net Sensor Data Composition

11. 11 Integrity Service Access Control GSN/Web/Web-Services Notification Manager Query Processor Query Repository Storage Manager Virtual Sensor Manager Input Stream Manager Stream Quality Manager Life Cycle Manager Pool Of Sensing Devices Global Sensor Networks http://gsn.sourceforge.net Sensor Server Processing and/or filtering. Storage, archive. Access to sensor network hardware. Easy setup, easy to change. Goal: Publishing streams generated by sensor networks. GSN: Reference Implementation

12. 12  Virtual Sensor: Functional/non-function properties.  Storage, data integrity, filters, pre-processors,etc. Described in a XML file. Global Sensor Networks http://gsn.sourceforge.net Source 1 Source 2 … Source n Application logic and processing Output Virtual Sensor

13. 13 Global Sensor Networks http://gsn.sourceforge.net BC143 room monitoring tinybox.epfl.ch 9001 select * from WRAPPER <stream-source alias="temperature1“ storage-size="1m“ sampling-rate=“1”> temperature BC143-N select AVG(temp1) as T1 from WRAPPER <stream-source alias="temperature2“ storage-size="1m“> temperature BC143-S select AVG(temp2) as T2 from WRAPPER select cam.picture as image, temperature.T1 as temp from cam, temperature1 where temperature1.T1 > 30 AND temperature1.T1 = temperature2.T2

14. 14 GSN, generic middleware for sensor networks Black box!  Produces streams.  Consumes control/feedback cmds. Inside sensor network:  In network processing (e.g.,TinyDB)  Any routing protocol.  Any MAC protocol. Global Sensor Networks http://gsn.sourceforge.net Sensor Network Stream Control/ Feedback

15. 15 Global Sensor Networks http://gsn.sourceforge.net GSN Hardware Support: HTTP generic wrapper  devices accessible via HTTP GET or POST requests, e.g., the AXIS206W wireless camera Serial forwarder wrapper  enables interaction with TinyOS compatible motes (standard access in TinyOS) USB camera wrapper  local USB connection.  supports cameras with OV518 and OV511 chips. RFID wrapper  Texas Instruments Series 6000 S6700 multi-protocol RFID readers  Alien Technologies long range RFID reader 8950. Generic UDP wrapper  any device using the UDP protocol Generic serial/bluetooth wrapper  supports sensing devices which send data through the serial port, e.g., EPuck robots, etc.

16. 16 Part 2: GSN and Sensor Map Together Global Sensor Networks MSR Sensor Map

17. 17 Integration:  Goal 1: SensorMap, channel for finding virtual sensors. meta data and sensor description, location, type, etc. Global Sensor Networks MSR Sensor Map

18. 18 Integration:  Goal 2: SensorMap, channel for accessing sensor data. Pulling for data from GSN servers. Global Sensor Networks MSR Sensor Map

19. 19 Latest updates on integration:  Goal 1: Using sensor map for finding sensors. Automatic virtual sensor registration to sensor map. Tightly integrated with GSN configuration. Example: Global Sensor Networks http://gsn.sourceforge.net

20. 20 Latest updates on integration:  Goal 2: pulling for sensor data from GSN. GeoRSS interface for GSN/SensorMap. Using GSN as the data hub. Example: Global Sensor Networks http://gsn.sourceforge.net

21. 21 Sensor Map:  Portal for finding virtual sensors. meta data and sensor description, location, type, etc.  Pulling for data when needed. GSN:  Sensor data publishing.  Sensor data management and archival.  Expensive client-side data processing. Handling sophisticated visualizations. Global Sensor Networks http://gsn.sourceforge.net

22. 22 GSN Team (as of today)  Ali Salehi (PhD)  Prof. Karl Aberer  Prof. Manfred Hauswirth  Dr. Andreas Wombacher  Dr. Yongluan ZHOU  Oana Jurca (PhD)  Lei Shu (PhD)  Antonio Aguilar (PhD)  Gearoid Hynes (PhD)  Clement Beffa (MSc) Global Sensor Networks http://gsn.sourceforge.net GSN  SensorMap Sensor data publishing. Data filtering/processing. Visualization. Data archival. Easy to setup and use. Looking up sensors. Meta data. Data aggregating.

23. 23 GSN status as of today  8 releases, latest version 0.95  ~50K visitors.  downloads > 1K. Global Sensor Networks http://gsn.sourceforge.net Users Community 3/5/2007-9/5/2007