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ASSEM : A new concept of observatories for long term seabed monitoring

ASSEM : A new concept of observatories for long term seabed monitoring. JANV 2002 – DEC 2004. 5ème PCRD : contract EVK3-CT2001-00051.

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ASSEM : A new concept of observatories for long term seabed monitoring

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  1. ASSEM : A new concept of observatories for long term seabed monitoring JANV2002 – DEC 2004 5ème PCRD : contract EVK3-CT2001-00051 R. Person, IFREMER, J. Blandin, IFREMER, J.M. Strout, NGI, J. Ammann, IPGP, V. Ballu, IPGP, P. Briole, IPGP, G. Etiope, INGV, M. Masson, CAPSUM GmbH, V. Lykousis, HCMR, G. Ferentinos, Univ. Patras, S. Smolders, THALES Geosolutions Atelier Expérimentation Instrumentation 2004

  2. Institut Français de Recherche pour l ’Exploitation de la Mer - France - CAPSUM Technologie GmbH - Germany - Co-ordinator Hellenic Centre for Marine Research - Greece - Norwegian Geotechnical Institute - Norway - Institut de Physique du Globe de Paris - France - University of Patras - Greece - Thales Geosolutions - Belgium - Istituto Nazionale di Geofisica e Vulcanologia - Italy - Partnership Atelier Expérimentation Instrumentation 2004

  3. The ASSEM solution Deploy a selection of sensors on a seabed area (some km2) connected to standard nodes. Nodes are communicating between them by acoustic links or cable links. Sensors can be deployed by ROV or submersible. Nodes can be linked to a permanent data server on shore to achieve real-time connexion and data archiving. The sensors locations are determined from a detailed pre site survey Atelier Expérimentation Instrumentation 2004

  4. Principle sketch Atelier Expérimentation Instrumentation 2004

  5. Example of Monitoring Node 2,2 meters 600 kg Atelier Expérimentation Instrumentation 2004

  6. Provide a set of sensors with : • Energy • Communication channels with the external world • Local data logging resources Local comm. (CLSI) Acoust. comm. Data storage Wired comm. Measurements Sequencer Sensor n Sensor A Sensor C Sensor B ... Functions of a Monitoring Node Atelier Expérimentation Instrumentation 2004

  7. Backbone-bridge solution Sensors are connected to the internal bus by a “bridge” CANopen internal bus (backbone) power Sensor bridge SENSOR data specific standard Atelier Expérimentation Instrumentation 2004

  8. Backbone-bridge solution Communication devices are connected to the internal bus by a “bridge” CANopen internal bus (backbone) power Communi-cation bridge COMM. DEVICE data specific standard Atelier Expérimentation Instrumentation 2004

  9. Internal architecture Local comm. (CLSI) Acoust. comm. Wired comm. MN housekeeping Pop-up modules driver 1 GB bridge bridge bridge CAN/CANopen 64 MB 64 MB 64 MB 64 MB bridge bridge bridge bridge Sensor n Sensor A Sensor C Sensor B ... Atelier Expérimentation Instrumentation 2004

  10. COSTOF Local comm. (CLSI) Acoust. comm. Wired comm. COSTOF Pop-up modules driver 1 GB bridge bridge bridge CAN/CANopen 64 MB 64 MB 64 MB 64 MB bridge bridge bridge bridge Communication & Storage Front-end Sensor n Sensor A Sensor C Sensor B ... Atelier Expérimentation Instrumentation 2004

  11. Power pack replacement Installation / sensors replacement (Link between nodes) Underwater connection Innovations Atelier Expérimentation Instrumentation 2004

  12. Innovations Underwater connection Atelier Expérimentation Instrumentation 2004

  13. Underwater connection Innovations Atelier Expérimentation Instrumentation 2004

  14. Innovations Dispositions anti-chalutage Atelier Expérimentation Instrumentation 2004

  15. Innovations Dispositions anti-chalutage Atelier Expérimentation Instrumentation 2004

  16. Innovation / communication A. communication from a Sub (local) CLSI: ContactLess Serial Interface • Tests before launching • Tests after in-situ maintenance operations SSI COSTOF Atelier Expérimentation Instrumentation 2004

  17. Innovation / communication A. communication from a Sub (local) CLSI picture Atelier Expérimentation Instrumentation 2004

  18. B. communication from a Ship USER Innovation / communication UN: Underwater Network • Real time commands • Data transfer UN UN UN SSI COSTOF Atelier Expérimentation Instrumentation 2004

  19. Internet USER Innovation / communication C. communication from Shore Permanent Data Server SERVER Telecom segment • Periodic data transfers • Real time commands • Alarms GATEWAY STATION U.N. U.N. SSI U.N. COSTOF Atelier Expérimentation Instrumentation 2004

  20. Innovation / communication Adaptive acoustic network The first experiments with ASSEM nodes rely upon the use of and Local Adaptive Acoustic Network: data are transmitted from one point of the network to another one by using the best road. B C   A   D Atelier Expérimentation Instrumentation 2004

  21. Finneidfjord experiment This fjord was recently the location of an important landslide. The experiment will be oriented toward slope stability studies with the use of pore pressure sensors deployed in boreholes. Atelier Expérimentation Instrumentation 2004

  22. Sensors suite Atelier Expérimentation Instrumentation 2004

  23. Sensors suite Atelier Expérimentation Instrumentation 2004

  24. Corinth experiment HCMR Atelier Expérimentation Instrumentation 2004

  25. Sensors suite GEODESIC SENSORS Atelier Expérimentation Instrumentation 2004

  26. Sensors suite METHANE SENSOR Improvement: sensitivity 50nmole/l to 20 nmoles/l operating depth from 2000m to 4000m better response time antifouling membrane Atelier Expérimentation Instrumentation 2004

  27. Corinth experiment Station Aegion buoy A M2 M1 OR Sea level GSM Link Acoustic Links Atelier Expérimentation Instrumentation 2004

  28. Example ROSE project for ship wreck monitoring Evolutions Atelier Expérimentation Instrumentation 2004

  29. Conclusions ASSEM is a new concept of real time sea floor observatory ASSEM is a warning system ASSEM can be linked to another observatory system like GEOSTAR ASSEM concept could be applied in biological or environmental studies Atelier Expérimentation Instrumentation 2004

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