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OBSERVATORIO SUBMARINO EXPANDIBLE Expandable Seafloor Observatory Main Research Fields Biology Geology Geophysics Meteorology Physical Processes Water Quality System architecture • • • Power Supply Land Station up to 1500Vdc Node Power Supply 300Vdc • Attached DC/DC converter 1500 to 300 Vdc Oceanographic Instruments 12 or 48 Vdc Up to 8 Oceanographic Instruments Land Station Cabled Sensor Next submarine stations 1 Buoy Integrated Sensor 12 or 48Vdc Main cylinder 2 Up to 1500Vdc up to 1500Vdc 0,8 Amps Marine Hybrid cable: 1. Copper tube at -1500Vdc (neg) 2. Aluminum screen at 0Vdc (pos) parallel connection to ground OBSEA – Expandable Seafloor Observatory Up to 1500Vdc 300Vdc High Voltage Power Supply 1500v to 300v DC/DC converter First submarine station Next submarine stations Data Management Software Diagram WebCam WebCam GIS Clients Clients Clients Seafloor Node PC - Linux Ground Station UDP Oceanographic Instrumentation Conversor Server - Linux Store Store Store Store Store Store Interroga Interroga Query Eth/Serie File File File Geo Server Maps Config Config Config Equipment CTD Camera LDAP SQL Manager Eth Switch Eth Switch Ethernet Eth/xx Other Interroga UDP Interroga replicator Config Config Config WWW Server LDAP WebCam Clients WebCam Clients Telnet Clients Real Time RAW User Database Configuration Database Zone Minder WebCam Clients WebCam Clients Web Clients HTTP / CGI SQL TCP Server WebCam Clients WebCam Clients WebCam Clients • Instruments transmit under UDP protocol • Non-permanente data storage at the main node • User and equipment configuration are stored in a Database • Data is stored in a database at the land station • Historical data through Internet with a web browser • Real Time Data through custom application or Telnet Measurements Database Ethernet phisical conection OBSEA – Expandable Seafloor Observatory UDP logic connection System architecture / Oceanographic Sensors Initial Prototype First stage To ground station 31.8mm 6 F.O. SM + 2 Conductors 6 F.O. SM + 2 Copper cond. Main cylinder Cable termination Hybrid Connector 300Vdc + 6 F.O. In 2 x dummy First instruments: • CTD (SBE 37 SMP) • IP Camera (PIV 6732) • Hydrophone (Bjørge Naxys Ethernet 02345) Maintenance: Every 6 months OBSEA – Expandable Seafloor Observatory 6 x Wet - mateable electrical connectors 2 x dummy Up to 6 x Instruments System architecture / Oceanographic Sensors Second stage Complete Node Power cylinder To ground station 31.8mm 6 F.O. SM + 2 Conductors Electrical connector 1500Vdc In 6 F.O. SM + 300Vdc Out 2 Copper cond. Cable termination To next node 31.8mm 6 F.O. SM + 2 Conductors Electrical connector 8 x Instruments Main cylinder 1500Vdc out, 300Vdc in 1500Vdc + 6 F.O. In Cable termination 6 F.O. SM + 1500Vdc + 6 F.O. Out 2 Copper cond. 2 x Hybrid Connector Possible future instruments • Long period seismometer (Mark products LTD-4-3D) • Short period Ocean Bottom Seismometer (OBS) • CO2 sensor OBSEA – Expandable Seafloor Observatory 8 x Wet - mateable electrical connectors System architecture Control Diagram • Autonomous Controller with microCLinux • SNMP communication with Ground Station • Constant monitoring of power, currents, temperatures, etc • Power control of individual components and external ports • Ground supervision, maintenance and emergency control Submarine Station Ground Station Internal Sensors Instrument interface Submarine cable Oceanographic instruments Control Management Server Communications Equipment OBSEA – Expandable Seafloor Observatory DC / DC Converters Power consumption monitoring Structure design / Operation and maintenance Top view Physical Structure Side view OBSEA – Expandable Seafloor Observatory • Designed for deployment at low depth (diver assisted) • Protection for the main node • Easy to transport and install 8 Structure design / Operation and maintenance • Designed for 300 meters depth • Free space for future developments • Up to 8 instrument ports • 2 ports for trunk cable connection • One subrack for 16 100 x 160mm PCB cards • 150 watt redundant 1+1 power suply at 48Vdc • 100 watt redundant 2+1 power supply at 12Vdc • 1+1 redundant gigabit ethernet switch Physical Structure Main Cylinder Ø56 Power supplies Ø47 Cable connectors OBSEA – Expandable Seafloor Observatory 950 1014 Ethernet Switches Subrack Instruments connectors 2 Support rails 9 Structure design / Operation and maintenance • 5 kilometers of marine cable from Telefonica • 1,5 kilometers of land optical cable from Telefonica • 1,5 kilometers of land electrical cable from Prysmian • Land installation by Abentel in june’08 • Marine installation to be done by Tyco Marine OBSEA – Expandable Seafloor Observatory Marine Cable Land Cable 10 OBSEA Location Future Ground Station Ground Station Future Node 3 Future Node 2 re a Pilot Node te Pro cte eA n i r a dM Possible nodes in the protected area OBSEA – Expandable Seafloor Observatory 11 Contributions • OBSEA observatory can be used as a test-bed for demo-mission sensors • Integration of sensor interfaces based on the IEEE 1451.2 and Puck . • Calibration of sensors before deployment as a certified lab by ISO/IEC 17025 norm.
