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Earth-Sea Science Junction Boxes

Explore advanced junction box concepts at the intersection of Earth-Sea Science, deploying active sensors like acoustic and optic technologies to enhance safety and data collection in underwater observatories. Discover the key steps, components, and safety measures for effective power management.

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Earth-Sea Science Junction Boxes

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  1. Earth-Sea ScienceJunction Boxes Monty Priede Oceanlab University of Aberdeen WP9

  2. KM3NeT Concept Distributed junction boxes around the array

  3. Active Sensors Acoustic Optic KM3NET Safety Radius Benign Sensors only

  4. 4-5 km? KM3NET Safety Radius 1km

  5. <100Km 1km The Junction Box Footprint

  6. Suggested Sea Floor Geometry of KM3NeT 91 Towers Regular Hexagon

  7. A 0 : +2000 Safety Radius 1000m 2000m 1000m B -1732: -1000 B +1732: -1000 Suggested Sea Floor Geometry of ES Science Junction boxes around KM3NeT

  8. 800 km loop

  9. Neptune-Canada 400V 10kV 10kW

  10. MARS Concept (Monterey)

  11. MARS – NEPTUNE Junction Boxes

  12. Neptune-Canada Junction Box http://www.neptunecanada.ca/jb_test/perf_reqs_junction_boxe_CV2_080620.pdf

  13. Neptune-Canada Junction Box • 10 individual instrument interfaces Ethernet or serial communication links. • 1.5 kW of power to each instrument • Variety of voltages to allow for maximum configurability • switch supply up to 6kW at 400V for high power loads. • The Junction Box connects to the node. • Instruments up to 10 km away from the Node and at depths up to 3000m

  14. Neptune-Canada Junction Box Oceanworks Tests at Alcatel Greenwich September 2008

  15. Junction Box (JB) architecture example Yves Auffret Ifremer Switch(es) CoS, QoS, PTP Boundary clock, VLAN, LACP, port Trunk,… Eth 1000LX (fiber) – 400VDC – NTP/PTP Eth 1000LX (fiber) – 400VDC – NTP/PTP Applications: Daisy chain for another JB, power equipments: robotics, vertical profiler… network extension up to 20km Eth 100BT (copper) – 48VDC – NTP/PTP + PPS/NMEA Eth 100BT (copper) – 48VDC – NTP/PTP + PPS/NMEA Node or JB Extension modules (up to 4 modules): IP server RS232/422/485, VDSL2 modem… Applications: Ethernet scientific instruments, ex: Seismometer (OBS), still camera , video, hydrophone, crawler… RS232/422/485 – 48VDC – PPS/NMEA Applications: Serial scientific instruments ex: ADCP, piezometer (pore pressure sensor) , seismometer, CTD, chemical analyzer,… 400VDC + Eth 1000LX (fibre) 1 or 2 fibres (fail-over, load balancing,..) Or 400VDC + xDSL (few km network extension) VDSL2 Modem – 400VDC – NTP/PTP Applications: Network extension, measurements in water column, instrument or instrument cluster up to 5-6km (low cost extension (vs. fiber), seismic network, acoustic network,… PTP/IEEE1588 clock client (PPS + NMEA time code) Control/command power supplies – faults detection Réseaux câblés et systèmes instrumentaux October 13th, 2008 15

  16. Neptune-Canada Junction Box http://www.neptunecanada.ca/jb_test/perf_reqs_junction_boxe_CV2_080620.pdf

  17. 1. Eth 1000LX (fiber) – 400VDC – NTP/PTP • Applications: • Daisy chain for another JB, • high power equipment: • robotics, vertical profiler… • network extension up to 20km Daisy chain Extension to 20 km

  18. 2. Eth 100BT (copper) – 48VDC – • NTP/PTP + PPS/NMEA • Ethernet scientific instruments, • Seismometer (OBS), • still camera , • video, • hydrophone, • crawler… <1km

  19. 3. RS232/422/485 – 48VDC – PPS/NMEA • Serial scientific instruments • ADCP, • piezometer (pore pressure sensor) , • seismometer, • CTD, • chemical analyzer,… <1km

  20. 4. VDSL2 Modem – 400VDC – NTP/PTP • Network extension, • measurements in water column, • instrument or instrument cluster up to 5-6km • (low cost extension (vs. fiber), • seismic network, • acoustic network,…,… Up to 5-6km

  21. KM3NET Sites 100km radius Potential Footprints ANTARES- Ligurian Sea 2475 m NEMO - Ionian Sea 3350m NESTOR - Ionian Sea 4500/5200m

  22. 2km and 12km radius footprints at Pylos 500-3100m 1000-4500m 3200-5200m

  23. Junction box Mechanical Components ROV servicable Housing (In case of failure) Observatory & Extension Manifold Connections Wet-mateable (in case of failure – 6 month service interval) Connection to Network Cable (In case of failure) Foundation Frame (permanent)

  24. MARS Concept (Monterey) Observatories distributed on the sea floor

  25. DELOS Concept (Angola)Observatory Modules on a frame Modules serviced By ROV every 6 months 8m 25 year life 4m Mud mat Foundations

  26. Neptune-Canada Junction Box The Vertical Profiler System is lowered into a wet testing tank at NGK Co. in Saitama Japan, 3 Sept 08

  27. Earth-Sea ScienceJunction Boxes Key Steps for TDR Do we take Optical Fibre through to observatories? Details of wet mateable manifold connectors Safety of power management- switching loads ESS data portal

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