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    MIND Seamap GunLink 4000

    Uploaded by

    Steve Heart
    The GunLink 4000 is Seamap's third generation hydrophone monitoring and source control system. It provides in-water firing control and sensor timing for up to 256 guns and hydrophone data from 256 phones. The electronics are located in the water, allowing shorter umbilical lengths and offsets. It comprises a host computer, timing control unit, umbilical termination modules and gun firing and sensing modules with depth/pressure sensors and connectors for hydrophones. The system monitors and controls individual gun firing times and solenoid currents with 24-bit sampling at 0.1ms for increased firing accuracy and auto-fire detection.

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    © All Rights Reserved
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    MIND Seamap GunLink 4000

    Uploaded by

    Steve Heart
    113 views2 pages
    The GunLink 4000 is Seamap's third generation hydrophone monitoring and source control system. It provides in-water firing control and sensor timing for up to 256 guns and hydrophone data from 256 phones. The electronics are located in the water, allowing shorter umbilical lengths and offsets. It comprises a host computer, timing control unit, umbilical termination modules and gun firing and sensing modules with depth/pressure sensors and connectors for hydrophones. The system monitors and controls individual gun firing times and solenoid currents with 24-bit sampling at 0.1ms for increased firing accuracy and auto-fire detection.

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    MIND_Seamap_GunLink_4000

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    The GunLink 4000 is Seamap's third generation hydrophone monitoring and source control system. It provides in-water firing control and sensor timing for up to 256 guns and hydrophone data from 256 phones. The electronics are located in the water, allowing shorter umbilical lengths and offsets. It comprises a host computer, timing control unit, umbilical termination modules and gun firing and sensing modules with depth/pressure sensors and connectors for hydrophones. The system monitors and controls individual gun firing times and solenoid currents with 24-bit sampling at 0.1ms for increased firing accuracy and auto-fire detection.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    113 views2 pages

    MIND Seamap GunLink 4000

    Uploaded by

    Steve Heart
    The GunLink 4000 is Seamap's third generation hydrophone monitoring and source control system. It provides in-water firing control and sensor timing for up to 256 guns and hydrophone data from 256 phones. The electronics are located in the water, allowing shorter umbilical lengths and offsets. It comprises a host computer, timing control unit, umbilical termination modules and gun firing and sensing modules with depth/pressure sensors and connectors for hydrophones. The system monitors and controls individual gun firing times and solenoid currents with 24-bit sampling at 0.1ms for increased firing accuracy and auto-fire detection.

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    SEAMAP GUNLINK™ 4000

    FULLY DISTRIBUTED IN-WATER SOURCE CONTROLLER AND


    HYDROPHONE DATA ACQUISITION SYSTEM

    The GunLink 4000 is the third phase of Seamap’s range


    of new generation hydrophone monitoring and source
    control systems.
    The system provides in-water firing control and sensor
    timing monitoring of up to 256 standard guns (128 GI
    guns) and is capable of receiving hydrophone data from
    up to 256 near field phones. The GunLink 4000 moves the
    system electronics in to the water allowing it to be mounted
    close to the gun array, thus reducing umbilical diameters,
    increasing umbilical lengths and allowing shorter offsets.

    The GunLink 4000 comprises of a Host Computer and


    Timing Control Unit (TCU), an Umbilical Termination
    Module (UTM) for each umbilical and a Gun Firing &
    Sensing Module (GFSM) for each one or two gun cluster.
    The GFSM also incorporates a depth sensor, a pressure
    sensor and a connector for an external hydrophone.
    Seamap Calibrated Hydrophones are fully supported. The
    GFSM’s are daisy chained along the array starting from the Gun Firing & Sensing Module (GFSM)
    UTM with only a single cable between each module thus
    reducing the complexity of the array wiring.

    Individual gun fire times and solenoid coil current logging


    enables the firing pulse to be fed to each gun solenoid at
    • Gun Capacity: Firing and Sensor Circuits for up to
    256 guns (128 GI Guns).
    the calculated time for a programmable period and voltage.
    The in-water circuitry allows each near field phone and • Near Field Phone Monitoring: Up to 256 near field
    firing sensor to be monitored continuously using a 24 bit phone 24 bit inputs sampled continuously at 0.1mS.
    A/D converter sampling at 0.1mS thus providing increased
    gun firing accuracy and auto-fire detection. The Host • Depth and High Pressure Inputs: Each Gun Firing
    Computer runs the main operating and control software Sensing Module is fitted with a depth and a high
    under the LINUX operating system and provides the pressure air sensor.
    main system control and display functions. The software
    has been designed to be both intuitive and simple to • User Interface: Twin screen Graphical User Interface.
    use, providing the operator with real time data and easily
    recognizable indications of deteriorating gun performance.
    • Slipring – Electrical with high speed Ethernet or
    Optical version as options

    • MOB Interface: Direct interface to vessel’s Seamap


    MOB system.

    • Air System: To simplify the air distribution at the


    cluster.

    • FiberLink Media Converters – option for winch


    mounted (for electrical slip rings) or instrumentation
    room (for optical slip rings).

    • Umbilical Termination: Provides power connections


    for additional in water auxiliary equipment such as the
    BuoyLink EX GPS.

    Umbilical Termination Module (UTM)

    MOTIVATE | INNOVATE | NAVIGATE | DISCOVER


    SEAMAP GUNLINK 4000

    FULLY DISTRIBUTED IN-WATER SOURCE CONTROLLER AND


    HYDROPHONE DATA ACQUISITION SYSTEM

    Specifications:
    General System Features
    Total Number of Guns 256 (128 GI Guns)
    Monitored Variables • Gun Fire Time
    • Near field hydrophone signals (one per GFSM)
    • Depth Sensor and air line pressure (one of each per GFSM)
    • Solenoid coil current

    Controlled Variables • Gun fire time


    • Gun firing pulse length and voltage
    Ancillary Monitored Variables • Atmospheric Pressure
    • Up to 23 compressor and umbilical line pressure inputs
    Remote Displays Large format digital pressure displays to display umbilical pressures on the gun deck.
    Supported Guns • Bolt 1500 and 1900 series Guns
    • Seamap Sleeve Guns
    • Sercel G and GI Guns
    Safety Features • Key controlled remote and local system disable
    • Bleed resistors on each solenoid output dump charge at system disable
    • Interface to vessel’s MOB system

    System Performance
    Timing Resolution 0.1 mS
    Fire Detect Window Up to 1024 mS
    Synchronization Modes Automatic (Additional algorithms available as required)
    Fire Detect Method Sensor or Hydrophone selectable
    Fire Time Pick Method Zero crossing, level detect, peak detect or combinations of all three
    Data Time Stamping All date time stamped to GPS time

    Software
    Graphical at-a-glance status screen Continuous update for each gun to indicate Gun fire; errors (faults); auto fire; double pop;
    depth; pressures and timing performance for each gun
    Text Based Status in Tabular Format Physical addressing; volume; timing error value; gun fire delay value; aim point offset value;
    For Each Gun depth value; array assignment; operational status and fault indication

    Installation
    Input Power 110 to 240 Volt AC, 50/60 Hz
    Instrumentation Room 19” Rack Mount, typical installation 38U
    Gun Deck Deckleads (up to 95m), Winch Reel Interface Module (WRIM), Sliprings
    Gun String Umbilical termination, TEM, GFSMs (all sizes on request)

    Seamap (U.K.) Ltd. Seamap Pte Ltd. MIND Technology


    Unit 34, The Maltings, Charlton Estate 51 Changi North Crescent 2002 Timberloch Place, Suite 550
    Shepton Mallet, Somerset, BA4 5QE, U.K. Singapore 499626 The Woodlands, TX 77380
    Tel: +44 [0] 1749 342223 Tel: +65 6545 1054 United States of America
    Fax: +44 [0] 1749 347588 Fax: +65 6545 0585 Tel: +1 281-353-4475
    email: seamapsales@mind-technology.com

    Seamap (U.K.) Ltd., Seamap Inc., Seamap Pte Ltd (hereafter Seamap) reserves the right to make any changes
    without notice to any of the products herein at its discretion. Seamap does not assume any liability arising out of
    the application or use of any product described herein; neither does it convey any license under its patent rights
    nor the rights of any others. All product names referenced herein are trademarks of their respective companies.
    Rev_0122. Copyright © 2002-2022 by MIND Technology 11-00-1028-A

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