WO2000054081A1 - Sensor array cable and fabrication method - Google Patents
Sensor array cable and fabrication method Download PDFInfo
- Publication number
- WO2000054081A1 WO2000054081A1 PCT/US2000/006063 US0006063W WO0054081A1 WO 2000054081 A1 WO2000054081 A1 WO 2000054081A1 US 0006063 W US0006063 W US 0006063W WO 0054081 A1 WO0054081 A1 WO 0054081A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- interlink
- cable
- sensor
- segment
- strength member
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title description 3
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- 239000013307 optical fiber Substances 0.000 abstract description 13
- 230000003287 optical effect Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
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- 229920001971 elastomer Polymers 0.000 description 13
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- 229920003023 plastic Polymers 0.000 description 10
- 230000000712 assembly Effects 0.000 description 7
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- 239000000806 elastomer Substances 0.000 description 7
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- 239000004593 Epoxy Substances 0.000 description 3
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- 239000004760 aramid Substances 0.000 description 3
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- 239000004814 polyurethane Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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- 229910052691 Erbium Inorganic materials 0.000 description 1
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- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920000508 Vectran Polymers 0.000 description 1
- 239000004979 Vectran Substances 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4469—Security aspects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
- G01V1/20—Arrangements of receiving elements, e.g. geophone pattern
- G01V1/201—Constructional details of seismic cables, e.g. streamers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3808—Seismic data acquisition, e.g. survey design
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/44528—Patch-cords; Connector arrangements in the system or in the box
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/56—Processes for repairing optical cables
- G02B6/562—Processes for repairing optical cables locatable, e.g. using magnetic means
Definitions
- the field to which the invention relates is that of cables including acoustic sensors of the kind most commonly used in marine seismic surveying.
- This invention relates to a sensor array cable and a method of making such cable.
- This invention provides a sensor array cable that incorporates a strength member, wires and/or optical fibers located around the strength member, a protective outer jacket, and one or more interlink/sensor assemblies. Such assemblies permit the easy and low cost installation of sensor devices in the cable.
- the methods of this invention include the steps of stripping off a portion of the protective outer jacket of such a cable, removing a portion of a strength member and inserting an interlink/sensor assembly in place of the removed portion. The cable is then overmolded with a plastic material. This method maintains the tensile strength, structural integrity and environmental ruggedness of the cable.
- Fig.1 is a top elevation view in cross section of a typical embodiment of a sensor array cable.
- Fig.2 is a perspective view in partial cross section of an interlink/sensor assembly.
- Fig 3. is a perspective view of components of an embodiment of an interlink/sensor assembly.
- Fig 4. is a side view in cross section of a portion of the cable of Fig. 1 between nodes
- Fig 5. is a side view of a node on the cable of Fig. 1 showing the overmold.
- Fig 6. is a side view of an interior portion of the protective jacket segment being removed from between nodes of the cable of Fig. 1.
- Fig. 7. is a side view of a portion of the strength member segment being removed from between nodes of the cable of Fig. 1.
- Fig. 8. is a side view of the free ends of the strength member segment with termini between nodes of the cable of Fig. 1.
- Fig. 9. is a side elevation view in partial cross section of the strength member termination of the cable of Fig. 1 with a wedge termination.
- Fig 10. is a side elevation view in partial cross section of the strength member termination of the cable of Fig. lwith a cast termination.
- ig 11. is a side elevation view in partial cross section of the strength member termination of the cable of Fig. Iwith a braided splice termination.
- ig 12. is a side elevation view in partial cross section of the strength member termination of the cable of Fig. Iwith a knot termination.
- ig 13. is a side elevation view in partial cross section of the strength member termination of the cable of Fig. Iwith a capstan termination.
- ig 14. is a perspective view of the interlink being attached to the strength member segments of the cable of Fig. 1.
- Fig 15. is a side view in cross section of a clip being installed onto an interlink to capture a terminated strength member.
- Fig 16. is a top elevation view of installed clips next to an interlink/sensor assembly.
- Fig. 17. is a top view in cross section of an installed interlink/sensor assembly encapsulated within an overmold.
- Fig. 18. is a perspective view of an installed interlink/sensor assembly and overmold in the cable of Fig. 1.
- Fig. 19. is a perspective view of an installed interlink/sensor assembly where the interlink is internal to the sensor device.
- Fig. 20. is a side view of in cross section of a portion of the cable of Fig. 1 between nodes.
- Figure 1 shows a sensor array cable 1 that includes interlink/sensor assemblies 5 at various locations along its length, denoted nodes 2.
- FIG. 2 illustrates components of an embodiment of interlink/sensor assembly 5 in partial cross section which comprises interlink 6 and sensor device 3 which when combined form interlink/sensor assembly 5.
- Interlink 6 allows sensor device 3 to be quickly and inexpensively installed into cable 1 while still maintaining the tensile strength of cable 1.
- Interlink 6 is a structure preferably of appropriate shape and composition to evenly and continuously transmit mechanical stresses.
- Interlink 6 may be made of a plastic material such as engineering thermoplastic, or of a composite material such as glass reinforced epoxy, although this is not required and other suitable materials such as aluminum may be used as well, or a combination of materials may be used.
- interlink 6 is internal to sensor device 3 as is illustrated in Figure 19.
- Figures 2 and 3 shows an alternative embodiment where interlink 6 is an external structure that contains sensor device 3.
- Sensor device 3 may include, as an example, any device that responds to a physical stimulus (for example heat, light, sound, pressure, magnetism or a particular motion) and transmits a resulting impulse (as for measurement or control).
- sensor device 3 is a hydrophone of the type commonly used in marine seismic surveying. Such hydrophones include but are not limited to those which operate using iber optics or piezoelectric phenomena.
- Sensor device 3 may also include, as an example, any device for telemetry, signal conduction, signal processing, signal amplification, or the like.
- sensor device 3 may contain, for example, optics and/or electronics for amplifying and/or transmitting output from a sensing device like a hydrophone.
- Sensor device 3, when used to amplify optical signals may contain a plurality of one or more optical iber couplers, optical fiber delay coils, optical fiber splices, wavelength division multiplexer couplers and optical fiber doped with such atoms
- sensor device 3 As erbium or ytterbium. Electronics for amplifying and multiplexing electrical signals may also be included in sensor device 3. The precise function and configuration of sensor device 3 will vary with the application and does not affect the practice of the present invention.
- Figure 19 shows a preferred embodiment of interlink/sensor assembly 5
- interlink 6 may be a machined or cast solid object, such as a rod, containing slots 14 for receiving termini of strength member segments 4. Interlink 6 is then inserted into a cavity within sensor device 3 and bonded to sensor device 3. Strength member segments 4 are subsequently attached,
- FIG. 3 shows the components of another embodiment of interlink/sensor assembly 5 (as shown in Figure 1) where sensor device 3 is contained within interlink 6.
- interlink 6 is a hollow body comprised of lower half
- Upper half 12 is shown as, for example, a frame with a window 50.
- Window 50 is an opening in upper half 12.
- lower half 11 or upper half 12 may, or may not, contain window 50 to facilitate visual inspection handling access during assembly of interlink/sensor assembly 5 and flooding with encapsulant when used.
- Sensor device 3 is contained within hinged sleeve mount 15.
- the combined hinged sleeve mount 15 and sensor device 3 is placed into open cavity 13 of lower half 11.
- Hinged sleeve mount 15 protects enclosed sensor device 3 during handling.
- Upper half 12 may then be placed over and attached to lower half 11, resulting in the combination of interlink 6 with sensor device 3 by encapsulating sensor device 3 within interlink 6 to form interlink/sensor assembly 5 (as shown in Figure 1).
- interlink is an integral part of a sensor device, such as being internal to the sensor device or an external appendage.
- Figure 4 shows an embodiment of sensor array cable 1 of Fig. 1, between nodes 2, that facilitates the quick and inexpensive installation of interlink/sensor assembly 5.
- cable 1 is comprised of a strength member segment 4 that bears mechanical stresses placed upon cable 1, at least one transmission medium segment 7, and a protective jacket segment 8 which protects the interior components of the cable.
- Strength member segments 4 may be cord or braid made of metal or a synthetic material such as Aramid fibers or Vectran. As is common in the art strength member segments may also have an outer coating jacket. Strength member segments 4 are joined together at the nodes 2 by attachment to interlink/sensor assemblies 5.
- Transmission medium segments 7 may be electrical wires, optical fibers, or any other suitable energy wave guide or carrier which carries power and signals to and from sensor devices 3. Segments 7 lie in close proximity to strength member segments 4 and in a preferred embodiment are wound helically around strength member segment 4 as shown, for example, in figure 20. Transmission medium segments 7 are connected to sensor device 3 of interlink/sensor assembly 5 as necessary for its operation (receiving power, transmitting signals, etc.), or may pass through one or more nodes 2 without connection to a sensor device 3. In such a situation, transmission medium segment 7 may be dressed onto interlink/sensor assembly 5.
- Protective jacket segments 8 may be made of any suitable material, but plastic material of sufficient elasticity, durability, strength and sealing ability such as polyethylene, polyurethane or nylon is preferred.
- Figure 5 illustrates how protective jacket segments 8 are connected together at nodes 2 through an overmold 9 which surrounds and contains interlink/sensor assembly 5.
- Overmold 9 is made of a material such as plastic, rubber or other suitable elastomer which seals and protects interlink/sensor assembly 5 and segments 7 from the environment and forms a seal with segments 8 on either side of node 2.
- the exterior of cable 1 includes protective jacket segments 8 joined together through overmolds 9, to form a continuous sealed protection from an exterior environment, such as water.
- Interlink/sensor assemblies 5 are easy to add to cable 1.
- Figure 6 shows the first step of installing an interlink/sensor assembly 5 into cable 1.
- a middle portion 16 of protective jacket segment 8 between nodes 2 is removed, through stripping or otherwise, to expose the interior of cable 1 (including strength member segment 4 and transmission medium segments 7). This leaves a first protective jacket segment 18 and a second protective jacket segment 19 alongside the newly exposed cable interior.
- Figure 7 shows the second step of installing an additional sensor device.
- Exposed transmission medium segments 7 are manipulated to provide easy access to a predetermined length of exposed strength member segment 4. If strength member segment 4 has an outer coating jacket then a portion of this outer coating jacket is removed by stripping or other means. An interior portion 22 of the strength member segment 4 is removed, which should be longer than interlink/sensor assembly 5 to be installed, leaving two exposed free ends 20 & 21, one on either end of the gap formed by removing interior portion 22.
- Figure 8 shows the third step of installing an additional sensor device.
- terminus 17 Each exposed free end 20 & 21 is given a terminus 17.
- the termini 17 prevent ends 20 & 21 from fraying, and allow for their attachment to interlink/sensor assembly 5 to transfer tensile loads from the strength member to interlink/sensor assembly 5.
- Different configurations of terminus 17 are feasible and will vary with the type of strength member segment 4 used and connection mode to interlink/sensor assembly 5.
- Figure 8 shows an example of terminus 17 as ball swage (or right circular cylinder swage) where strength member segment 4 is steel cord or the like.
- Figure 9 shows wedge termination 23 which is another embodiment of terminus 17.
- Strands 24 making up non-metallic strength member segment 4 are inserted and spread throughout conical volume 25 within termination block 26.
- Metal wedges or cylinders 27 are driven into conical volume 25 between strands 24.
- Figure 10 shows a cast rope termination 28 which is another embodiment of terminus 17.
- Strands 24 of strength member segment 4, which may be either metallic or synthetic cord or braid, are inserted and spread throughout conical volume 25 within termination block 26.
- a hard casting material 29, such as a glass-filled epoxy, is placed within conical volume 25 and effectively bonds strength member segment 4 to termination block 26.
- Figure 11 shows a braided splice termination 30 which is another embodiment of terminus 17 when a braided synthetic cord, such as aramid, is used.
- a braided eye splice 31 is shown, the method and description of which is described in handbooks for sailing etc. such as Chapman Piloting: Seamanship & Small Boat Handling (62 nd Ed.) Elbert S. Maloney, Charles Frederic Chapman (September 1996) Hearst Books Publishing ISBN 0688 148921.
- Figure 12 shows a knot termination 32 which is another embodiment of terminus 17 when a synthetic cord is used. Any suitable knot 33 may be used in forming the termination, the method and description of which is described in handbooks for sailing etc. such as Chapman Piloting: Seamanship & Small Boat Handling (62 nd Ed.) Elbert S. Maloney, Charles Frederic Chapman (September 1996) Hearst Books Publishing ISBN 0688 148921.
- Figure 13 shows a friction creating capstan termination 34 which is another embodiment of terminus 17.
- the free end of strength segment 8 is looped around capstan 35 preferably at least three times. Secure end 36 is then terminated by bonding end 36 to capstan 35, or interlink to which capstan 35 is attached, or other means to prevent unraveling of the loop around capstan 35.
- Figure 14 shows the fourth step.
- Lower half 11 of interlink 6 with, as an example, slots 14 receives ends 20 & 21 which are terminated with, for example, a ball swage 17.
- Each end 20 & 21 is inserted into a slot 14.
- Termination link clamps 37 are then placed over slots 14 and attached to lower half 11 to hold terminated ends 20 & 21 in place.
- Other means of attacliment are also feasible and suitable depending upon the type of terminus employed, if any, e.g. swaged fitting, bonded connection, threaded crimp fitting, compression fitting, etc.
- Figures 15 and 16 illustrates an embodiment where a clip 40 is installed onto interlink/sensor assembly 5 to capture terminus 17 in order to further assure a solid connection.
- the fifth step is to cut (if not already done) and connect the necessary transmission medium segments 7 (e.g. wires or optical cables) to sensor device 3.
- the necessary transmission medium segments 7 e.g. wires or optical cables
- FC/APC optical fiber connectors
- FC/APC optical fiber connectors
- Other connection means will be appropriate depending upon the particular application.
- Any transmission medium segments 7 which are not connected to interlink/sensor assembly 5 may be dressed onto interlink/sensor assembly 5.
- FIG 17 shows overmold 9, the result of the sixth and final step of installing a sensor into cable 1.
- a protective material such as plastic, rubber or another suitable elastomer
- Overmold 9 may be formed by injection molding, casting or otherwise. It is also feasible, before forming the overmold to surround and contain said interlink/sensor assembly within a rigid tube . This provides the advantages of more flexibility in implementing molding/curing processes. Furthermore, if a rigid tube is employed which extends over the protective jacket segments it may simply be filled with an encapsulant and thus itself serve as an overmold.
- Figure 18 shows a perspective view in cross section of a completed node 2 on cable 1 containing an interlink/sensor assembly 5 and overmold 9.
- This method for installing a sensor device into a cable may be used to make an entire sensor array cable 1, starting with a cable containing a strength member 4, one or more transmission mediums 7, and a protective jacket 8, then adding the desired number of interlink/sensor assemblies 5.
- This method permits including any number of interlink/sensor assemblies to form sensor array cable 1.
- Node - A location on a sensor array cable where a sensor device or an interlink/sensor assembly is located.
- Cord - A long slender flexible material which may consist of several strands woven or twisted together.
- Fiber A slender and elongated natural or synthetic filament which may be constructed of a material, such as glass or metal, which can convey (carry) electrical or light energy.
- Braid - A cord having at least two component strands forming a regular diagonal pattern down its length.
- Strength member segment A cord made of a material, such as metal or Aramid fibers, that lies between nodes and provides tensile strength to a sensor array cable.
- Interlink - An object of a particular shape and composition adapted to transmit and bear mechanical stresses.
- Sensor device- A device that responds to a physical stimulus (for example heat, light, sound, pressure, magnetism or a particular motion) and transmits a resulting impulse (as for measurement or control), or a device for telemetry, signal conduction, signal processing, signal amplification, or the like.
- a physical stimulus for example heat, light, sound, pressure, magnetism or a particular motion
- a resulting impulse as for measurement or control
- Interlink/sensor assembly- A combination of a sensor device and an interlink.
- Transmission medium segment An object of a fixed length made of a material which can carry power and energy signals to and from a sensor device, and which may include, for example, electrical wires or optical fibers.
- Protective jacket segment An object made of a material, such as plastic, rubber or other elastomer which protects a strength member segment, a transmission medium segment, or both, from the surrounding environment, such as water.
- Overmold - An object made of a material, such as plastic, rubber, or other elastomer which surrounds and contains an interlink/sensor assembly and transmission medium segments at a node, and forms a watertight seal with the protective jacket segments on either side of the node.
- Terminus An end of a cord, fiber, or wire which has been shaped or treated mechanically, chemically, or otherwise to prevent fraying and which allows attachment to a interlink and transmission of tensile loads.
- Optical fiber A fiber that conveys (carries) light energy.
- Plastic An elastomer, rubber, or any of numerous organic synthetic or processed materials that are mostly thermoplastic or thermosetting polymers of high molecular weight and that can be molded, cast, extruded, drawn, or laminated into objects, films, or filaments.
- Injection molding A method of creating plastic objects, films, or filaments.
- Attachment point A location on an interlink/sensor assembly where a strength segment may be attached, such as a groove for accepting a terminus.
- Telemetry module Any device used to receive an electrical or optical signal and to transmit the signal with, or without, amplification or modification.
- Occupy - To fill, at least partially, a volume of space within a cavity.
- Cavity An unfilled space within an object. Open Cavity - An unfilled space within an object that is contiguous with the space surrounding the object.
- Closed Cavity An unfilled space within an object that is not in contact with the space surrounding the object.
- Encapsulant - A material used to encapsulate an object, such as an interlink/sensor assembly, which serves to protect the object encapsulated from mechanical stresses or loads or environmental conditions (such as water or air), and in some circumstances is used to facilitate or enhance performance of a device by , for example, matching the acoustic impedance of the surrounding environment.
- An encapsulant may be any suitable material including, but not limited to, polyurethane, polyethylene or other elastomer.
- Outer Coating Jacket An object made of a material, such as plastic, rubber or other elastomer which coats and protects a strength member segment.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Computer Security & Cryptography (AREA)
- Oceanography (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002363685A CA2363685C (en) | 1999-03-09 | 2000-03-08 | Sensor array cable and fabrication method |
EP00917797A EP1173785B8 (en) | 1999-03-09 | 2000-03-08 | Sensor array cable and fabrication method |
AU38715/00A AU765976B2 (en) | 1999-03-09 | 2000-03-08 | Sensor array cable and fabrication method |
JP2000604250A JP4451569B2 (en) | 1999-03-09 | 2000-03-08 | Sensor array cable and manufacturing method |
NO20014352A NO20014352L (en) | 1999-03-09 | 2001-09-07 | Sensor cable, as well as fabrication procedure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/265,746 | 1999-03-09 | ||
US09/265,746 US6278823B1 (en) | 1999-03-09 | 1999-03-09 | Sensor array cable and fabrication method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000054081A1 true WO2000054081A1 (en) | 2000-09-14 |
Family
ID=23011741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2000/006063 WO2000054081A1 (en) | 1999-03-09 | 2000-03-08 | Sensor array cable and fabrication method |
Country Status (8)
Country | Link |
---|---|
US (1) | US6278823B1 (en) |
EP (1) | EP1173785B8 (en) |
JP (1) | JP4451569B2 (en) |
KR (1) | KR100811313B1 (en) |
AU (1) | AU765976B2 (en) |
CA (1) | CA2363685C (en) |
NO (1) | NO20014352L (en) |
WO (1) | WO2000054081A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009014451A1 (en) | 2007-07-23 | 2009-01-29 | Bennex As | Protective socket for a sensor node |
EP2216666A1 (en) * | 2009-02-06 | 2010-08-11 | CCS Technology Inc. | Cable and method for manufacturing the same |
FR3018617A1 (en) * | 2014-03-11 | 2015-09-18 | Acome Soc Cooperative Et Participative Sa Cooperative De Production A Capital Variable | DEVICE FOR MONITORING A STRUCTURE USING OPTICAL CABLES AND METHOD FOR CONNECTING OPTICAL CABLES THEREFOR |
RU2626812C1 (en) * | 2016-06-15 | 2017-08-01 | ООО "Фордевинд" | Hydroacoustic receiver for geophysical seismic |
RU2741772C1 (en) * | 2019-08-01 | 2021-01-28 | Акционерное общество "Концерн "Центральный научно-исследовательский институт "Электроприбор" | Cable section of towed fibre-optic hydroacoustic streamer |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6580033B1 (en) * | 2000-07-28 | 2003-06-17 | Litton Systems, Inc. | Telemetry harness for towed fiber optic acoustic array |
US6442316B1 (en) * | 2000-12-21 | 2002-08-27 | Alcatel | Stress sensor based on periodically inserted color-changing tactile films to detect mishandling of fiber optic cables |
US20040262025A1 (en) * | 2001-09-21 | 2004-12-30 | Konrad Brandt | Multi-part insulating cover |
GB2396211B (en) | 2002-10-06 | 2006-02-22 | Weatherford Lamb | Multiple component sensor mechanism |
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RU2741772C1 (en) * | 2019-08-01 | 2021-01-28 | Акционерное общество "Концерн "Центральный научно-исследовательский институт "Электроприбор" | Cable section of towed fibre-optic hydroacoustic streamer |
Also Published As
Publication number | Publication date |
---|---|
EP1173785A1 (en) | 2002-01-23 |
EP1173785B8 (en) | 2012-04-04 |
AU3871500A (en) | 2000-09-28 |
NO20014352D0 (en) | 2001-09-07 |
CA2363685A1 (en) | 2000-09-14 |
NO20014352L (en) | 2001-09-07 |
US6278823B1 (en) | 2001-08-21 |
EP1173785B1 (en) | 2012-02-08 |
KR20010113732A (en) | 2001-12-28 |
JP2002539468A (en) | 2002-11-19 |
KR100811313B1 (en) | 2008-03-07 |
EP1173785A4 (en) | 2002-05-15 |
CA2363685C (en) | 2009-11-17 |
JP4451569B2 (en) | 2010-04-14 |
AU765976B2 (en) | 2003-10-09 |
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