1. PermaSense Data Management Jan Beutel, Mustafa Yuecel, Roman Lim, Tonio Gsell, ETH Zurich

2. What we have today: PermaSense Starting Points

3. Low-power Wireless Sensors Static, low-rate sensing (2 min) Temperatures, crack meters, resistivity 3 years operation < 0.1 Mbyte/node/day

4. Base Station for Data Collection

5. High Resolution Imaging – Mountainview Camera Dual network (TinyNode, WLAN) 12 Megapixel D-SLR imager Calibrated optics Remotely configurable ~ 1 Gbyte/camera/day

6. Long-haul Communication 7.5 km from weather radar on Klein Matterhorn Leased fiber/DSL from Zermatt Bergbahnen AG Collaboration with APUNCH/CCES

7. Data Backend Integration and Tools Based on GSN (EPFL research project) Collaboration with SwissEx/EPFL Slowly gaining in-house knowledge Limited visualization capabilities Many different other components necessary for 24/7 operation and debugging

8. The Big Picture – Network System Integration

9. Data Management Tools and Dataflow

10. Data Management – Online Semantic Data Global Sensor Network (GSN) –Data streaming framework from EPFL –Organized in “virtual sensors”, i.e. data types/semantics –Hierarchies and concatenation of virtual sensors enable on-line processing –Translates data from machine representation to SI values –Adds metadata PrivatePublic Metadata ============== Position Sensor type … Import from field GSN Web export

11. Multi-site, Multi-station Data Integration

12. TinyOS Multiplexing Data Flow

13. Example: Sensor Network and Backlog/CoreStation

14. Example: Private GSN Data Intake

15. Example: Public GSN Data Mapping and Conversion

16. Sensor Type Mapping

17. Sensor Node DAQ Routines

18. Simple - One Sensor Type - One Usage - One Packet

19. Harder - Two Packets, Multiple Sensor Types

20. Complex - Multiple Configs, Reuse of MUX resource

21. Position/Type Mapping: XYZ_nodepositions.xls

23. Open Problems

24. Open Problems - Random Order Merging of multi-packet data (ADCMUX1/2) Multi-sink deployments –Upstream/downstream data (protocol and control issue) Multi-core station integration (proposal) Visualization Integration of further processing steps Documentation …