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Status of the LIDO East Sicily Station

Status of the LIDO East Sicily Station. F.Bruni. AGENDA. Work progress status Payload SN-1 observatory Integrations Surface station HMI Test program Deployment procedure. LIDO East Sicily Station. Based on SN-1 seafloor observatory properly upgraded

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Status of the LIDO East Sicily Station

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  1. Status of the LIDO East Sicily Station F.Bruni

  2. AGENDA • Work progress status • Payload • SN-1 observatory • Integrations • Surface station • HMI • Test program • Deployment procedure

  3. LIDO East Sicily Station • Based on SN-1 seafloor observatory properly upgraded • Two missions successfully completed • 2002-2003 (autonomous configuration) • 2005-2008 (hybrid configuration, compatible with cabled or autonomous operation)

  4. LIDO East Sicily Station • Modified/changed • All batteries removed • Acoustic telemetry removed • Mass memory devices removed • New optical telemetry • New power management and distribution • Scientific payload increased • Dedicated frame for magnetometers • Completely new Shore Station implemented • Sensors individually accessible from shore • Maintained • Frame • MODUS-assisted deployment and recovery • Seismometer installation procedure • Interface with electro-optical cable • Sensors directly managed by SN-1 DACS

  5. SN-1 observatory general assembly Bioacoustic hydrophone DPG ADCP Magnetometers module DACS ROV mateable connector (in parked position) Depth sensor Bioacoustic bentosphere

  6. SN-1 observatory general assembly Currentmeter Seismometer + release OAS hydrophone CTD Gravity meter SMID hydrophone Bioacoustic bentosphere Magnetometers module

  7. Work progress status (Tecnomare)

  8. Payload

  9. SN-1 observatory general assembly

  10. Magnetometer module layout Vectorial magnetometer (glass sphere) Weight in air : about 125 kg Weight in water: about 17 kg Lifting handle (hinged) Lifting handle (fixed) Scalar magnetometer Buoyancy elements (adjustable number and position) Magnetometers j-box

  11. Magnetometers module layout

  12. Mechanical frame status

  13. Payload test: seismometer – DPG – OAS hydrophone • Sensors: • Guralp CMG-1T (s/n T1049) • DPG vs 6.3 (s/n 05057) • Hydrophone OAS E-2PD (ex SN-4) Acquisition through Guralp DM24 digitizer (s/n A1699) - 100 Hz DATA ACQUISITION ELECTRONICS SEISMOMETER DPG HYDROPHONE

  14. Seismometer and digitizer Seismometer and digitizer after upgrading work (Dec. 2008 – Nov. 2009)

  15. Payload test: seismometer – DPG – OAS hydrophone

  16. SN-1 electronics: DACS integration Ethernet – RS232 converters Compass CPU, switch OPTICAL BOX (telemetry) 24-bit digitizer DC Power supplies (12, 24, 48 VDC) IMU AC transformer

  17. SN-1 electronics: magnetometers J-BOX Vectorial magnetometer electronics (power supply + 24 bit digitizer) integrated inside a dedicated pressure vessel

  18. Shore station station: power supply and control

  19. Shore station: power supply rack • Generates 500 VAC mono-phase for the observatory through a step-up isolation transformer • Requires 230 VAC input • Monitors the umbilical cable isolation • Automatic and manual output voltage ramp control (soft start) • Display of power status parameters (current in, voltage in, current out, voltage out, isolation resistance) • Equipped with an intelligent unit (PLC) • Transmit power status data through RS-232 connection to the HMI PC

  20. Data acquisition rack: telemetry unit SC optical connectors to the surface OPTICAL BOX Data connections to SN-1 sensors: RS-232 Underwater LAN RJ45 connectors 220 VAC GPS input (MIL) and telemetry (2 x SC)

  21. HMI Control software

  22. Final test program (proposal)

  23. Final test program (proposal)

  24. Deployment and start-up procedure (preliminary for discussion) • ship final positioning on site • MODUS + SN-1 deployment • (winch) descent • (MODUS) final positioning and alignment with respect to INFN j-box • (winch) touch-down • (MODUS) disconnection • MODUS recovery • ROV deployment • (ROV) connection of the electro-optical jumper to INFN j-box • (shore station) Switch on power supply • (shore station) check of SN-1 observatory and payload status • (ROV) extract and deploy the magnetometers module • (shore station) check of magnetometers module • (shore station) release seismometer, start mission • ROV recovery

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