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WO2024143070A1 - Dispositif d'enregistrement de son et sonde subaquatique - Google Patents

Dispositif d'enregistrement de son et sonde subaquatique Download PDF

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Publication number
WO2024143070A1
WO2024143070A1 PCT/JP2023/045512 JP2023045512W WO2024143070A1 WO 2024143070 A1 WO2024143070 A1 WO 2024143070A1 JP 2023045512 W JP2023045512 W JP 2023045512W WO 2024143070 A1 WO2024143070 A1 WO 2024143070A1
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WO
WIPO (PCT)
Prior art keywords
container
sound
recording
recording device
unit
Prior art date
Application number
PCT/JP2023/045512
Other languages
English (en)
Japanese (ja)
Inventor
友成 赤松
元 永沼
京平 高見
充 島津
祐也 山本
達雄 福原
俊一 川▲崎▼
庸介 大西
正之 長尾
淳 鈴木
直輝 齋藤
哲也 三輪
和正 池田
弘 高橋
Original Assignee
株式会社Ｋａｎｓｏテクノス
友成 赤松
国立研究開発法人産業技術総合研究所
国立研究開発法人海洋研究開発機構
岡本硝子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Ｋａｎｓｏテクノス, 友成 赤松, 国立研究開発法人産業技術総合研究所, 国立研究開発法人海洋研究開発機構, 岡本硝子株式会社 filed Critical 株式会社Ｋａｎｓｏテクノス
Publication of WO2024143070A1 publication Critical patent/WO2024143070A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/48—Means for searching for underwater objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone

Definitions

  • underwater sounds that are the subject of observation and recording include "underwater noise” that is the subject of impact assessments due to construction and development, "background noise” that is the baseline for environmental impact assessments, and "underwater biological sounds” that are generated by organisms that need to be protected or that need to be considered for protection or consideration. "Underwater biological sounds” are used to confirm the presence or absence of organisms that need to be protected or that need to be considered for protection or consideration.
  • Background noise refers to underwater sound waves that are normally present in the observation area other than the specific underwater sounds that are the subject of evaluation.
  • Background noise includes underwater sounds that are not subject to evaluation, such as sound waves caused by changes in weather and sea conditions, sounds of ships sailing in the vicinity, and biological sounds produced by organisms living in the area. Temporary construction sounds from underwater construction, vibration sounds from underwater microphones, and electrical noise from recording devices do not fall under the category of "background noise.”
  • Patent Document 1 describes a connected underwater exploration vehicle in which at least one battery-powered underwater exploration vehicle consisting of three pressure-resistant hollow glass spheres housing photographic equipment, lighting equipment, recording equipment, audio communication equipment, and control equipment for controlling these, and at least one battery vehicle having substantially the same shape and structure as the underwater exploration vehicle are connected by a connector.
  • at least one battery-powered underwater exploration vehicle consisting of three pressure-resistant hollow glass spheres housing photographic equipment, lighting equipment, recording equipment, audio communication equipment, and control equipment for controlling these, and at least one battery vehicle having substantially the same shape and structure as the underwater exploration vehicle are connected by a connector.
  • observing background noise levels in deep areas of the open ocean and observing the marine mammals that appear in those areas requires observation and recording for several months to a year.
  • deep-sea exploration requires that data can be recorded for as long as possible during a single exploration activity, even if the recordings are intermittent.
  • the International Seabed Authority (ISA) requires that underwater sound recordings be monitored for as long as one year.
  • the present invention has been made to solve the above problems, and aims to provide a recording device and underwater exploration vehicle that can record audio for long periods of time even in deep sea areas.
  • a recording device comprising a hollow spherical container, a power supply device disposed inside the container, a recording unit including a storage device disposed inside the container, and a sound sensor fixed to the inner surface of the container and/or a sound sensor disposed outside the container, the sound sensor being electrically connected to the recording unit via a cable.
  • the recording device according to any one of [1] to [7], further comprising a base provided inside the container, the base having one or more container fixing parts fixed to the container, a storage device installation part having an installation surface on which the storage device is provided, and a power supply device installation part having an installation surface on which the power supply device is provided.
  • FIG. 1 is a schematic diagram showing a recording device according to a first embodiment of the present invention
  • FIG. 13 is a schematic diagram showing a recording device according to a second embodiment of the present invention.
  • FIG. 2 is a perspective view showing a specific example of a sensing unit of the audio recording device of the first embodiment, the perspective view showing the container and other parts.
  • FIG. 4 is a plan view showing the sensing unit of FIG. 3 with the first hemispherical portion omitted.
  • FIG. 4 is a front perspective view showing the sensing unit of FIG. 3 with the container seen through.
  • FIG. 4 is a side perspective view showing the sensing unit of FIG. 3 with the container being seen through;
  • FIG. 1 is a schematic diagram showing a recording device according to a first embodiment of the present invention
  • FIG. 13 is a schematic diagram showing a recording device according to a second embodiment of the present invention.
  • FIG. 2 is a perspective view showing a specific example of a sensing unit of the audio recording device of
  • FIG. 2 is a perspective view showing a specific example of a sub-unit of the sound recording device of the first embodiment, showing the container in a see-through state.
  • 8 is a plan view showing the subunit of FIG. 7 with the first hemispherical portion omitted.
  • FIG. FIG. 8 is a front perspective view showing the subunit of FIG. 7 with the container seen through.
  • FIG. 8 is a side perspective view showing the subunit of FIG. 7 with the container seen through.
  • FIG. 13 is a schematic diagram illustrating a recording device according to a third embodiment.
  • FIG. 13 is a schematic diagram illustrating a recording device according to a fourth embodiment.
  • FIG. 13 is a perspective view showing the internal structure of a sound recording device according to a third embodiment, showing the case.
  • the probe body 130 has upper and lower fixed frames 132, 133 spaced apart from each other, and three elongated container support plates 131 whose both longitudinal ends are fixed by the upper and lower fixed frames 132, 133.
  • the three container support plates 131 are fixed by the upper and lower fixed frames 132, 133 to form a triangular cylindrical body extending in the longitudinal direction of the container support plates 131.
  • each container support plate 131 has three container insertion windows 134 in the longitudinal direction, through which the container 60 of the sound recording device 10A can be inserted.
  • the container insertion windows 134 are circular.
  • Nine container insertion windows 134 of each container support plate 131 are provided throughout the probe body 130.
  • the two containers 60 (first container 60A and second container 60B) of the sound recording device 10A are inserted into the container insertion windows 134 of the container support plate 131 of the probe body 130, and are held to the container support plate 131 using a holder 137 (see FIG. 21, FIG. 25 to FIG. 27) not shown.
  • the sound sensor 40 (not shown in FIG. 20 and FIG. 21) of the sound recording device 10A is attached to the probe body 130.
  • the underwater exploration vehicle 100A in FIG. 20 is immersed in water, it can record underwater sounds using a recording device 10A having a sound sensor 40, enabling observation and recording of underwater noise, etc. to be performed.
  • the instrument-containing ball is indicated by reference numeral 135 .
  • equipment-integrated spheres 135 other than the equipment unit of the sound recording device 10A, such as a photographing sphere with a camera built in that takes pictures of the outside of the spherical container inside a transparent spherical container, or a lighting sphere with lighting equipment built in inside a transparent spherical container for taking pictures with the camera of the photographing sphere, are inserted and held in the probe main body 130. Only one device-containing ball 135 is inserted into one container insertion window 134 .
  • the underwater exploration vehicle can also be configured such that the equipment unit of the sound recording device is connected via a rope or the like to a container-equipped exploration vehicle main body that does not include the equipment unit of the sound recording device (for example, the underwater exploration vehicle 100B in FIG. 22).
  • the holder 137 can be prepared in a variety of types with different protruding dimensions of the sphere container pressing pad 137c from the inner surface of the dome-shaped portion 137a, thereby accommodating various outer diameters of the container 60 of the device-embedded sphere 135.
  • the holder 137 may also be configured such that the ball container pressing pad 137c can be detached from the dome-shaped portion 137a.
  • the container 60 for the equipment-containing sphere 135 has an outer diameter that is slightly smaller than the diameter of the container insertion window 134 in the container support plate 131.
  • the inner diameter of the open end of the dome-shaped portion 137a of the holder 137 is slightly larger than the outer diameter of the container 60 for the equipment-containing sphere 135, and the outer diameter of the open end is equal to or slightly smaller than the diameter of the container insertion window 134 in the container support plate 131.
  • the dome-shaped portion 137a of the holder 137 can be inserted into the container insertion window 134 in the container support plate 131.
  • a pair of holders 137 constituting a container cover body 139 is attached to the container support plate 131 by inserting the dome-shaped portion 137a of one holder 137 into the container insertion window 134 of the container support plate 131 and bolting the mutually overlapping flange portions 137b to the container support plate 131.
  • the mutually overlapping flange portions 137b of the pair of holders 137 of the container cover body 139 are bolted (fastened) to the container support plate 131 by using bolts 138a in a state where they are overlapped all around the container insertion window 134 on one side of the container support plate 131 into which the dome-shaped portion 137a of the holder 137 is inserted.
  • the dome-shaped portion 137a inserted into the container insertion window 134 of the container support plate 131 protrudes from the side opposite to the side on which the flange portion 137b of the holder 137 of the container support plate 131 is provided. At least the opening side end of the dome-shaped portion 137a inserted into the container insertion window 134 is disposed within the container insertion window 134 of the container support plate 131.
  • Fig. 26 illustrates a fastening structure in which the overlapping flange portions 137b of a pair of holders 137 of the container cover body 139 and the container support plate 131 are fastened between the head of a bolt 138a having a threaded shaft that passes through them and a nut 138b into which the threaded shaft of the bolt 138a is screwed.
  • the nut 138b is replaced with a female threaded hole formed in the container support plate 131, and the threaded shaft portion of the bolt 138a that is passed through the overlapping flange portions 137b of the pair of retainers 137 of the container cover body 139 is screwed into the female threaded hole of the container support plate 131, and the overlapping flange portions 137b of the pair of retainers 137 of the container cover body 139 are fastened to the container support plate 131 by the bolts 138a.
  • a window hole 137d is formed in the dome-shaped portion 137a of the holder 137 illustrated in Figures 25 and 27.
  • the container cover body 139 allows visual observation of the device-containing ball 135 in the container-shaped portion through the window hole 137d in the dome-shaped portion 137a of the holder 137 from the outside of the container cover body 139.
  • the size of the window hole 137d can be changed as appropriate.
  • the holder 137 can be configured without the window hole 137d.
  • a holder 137 having a window hole 137d is used to hold the photographing ball and the lighting ball on the container support plate 131.
  • the buoyancy in water of the equipment-mounted sphere 135 used in the underwater exploration vehicle of the embodiment according to the present invention is greater than the gravity acting on the entire equipment-mounted sphere 135.
  • the equipment-mounted sphere 135 When submerged in water, the equipment-mounted sphere 135 generates a buoyancy force.
  • the buoyancy of the communications unit 142A in water is greater than the gravity acting on the entire communications unit 142A, and the communications unit 142A generates a buoyancy force when submerged in water.
  • the weight 144 of the underwater exploration vehicle 100A generates a sinking force when submerged in water.
  • the exhaust valve 63 is preferably a check valve that opens when the pressure difference between the pressure outside the container 60 and the pressure inside the container 60, which is higher than the pressure outside the container 60, through the exhaust valve 63 is equal to or greater than a preset value, and closes when the pressure difference in the open state becomes smaller than the preset value.
  • the substrate support plate 87, the storage device installation portion 88 and the top plate 89 of the first base 80A of the sensing unit 110 in the illustrated example are formed in a flat plate shape.
  • the substrate support plate 87 is supported in a direction parallel to the pedestal main plate 85 at a position spaced away from the container fixing portion 84 relative to the pedestal main plate 85 by a plurality of support portions (second support portions 86B) provided between the substrate support plate 87 and the pedestal main plate 85.
  • the second support portions 86B are fixed to the substrate support plate 87 and the pedestal main plate 85.
  • the substrate support plate 87 is fixed to the pedestal main plate 85 via the plurality of second support portions 86B.
  • the memory device installation section 88 is fixed to the container fixing section 84 via the third support section 86C, the substrate support plate 87, the second support section 86B, the base main plate 85, and the first support section 86A, and is supported in a direction parallel to the surface direction of the container fixing section 84.
  • the third support section 86C, the substrate support plate 87, the second support section 86B, the base main plate 85, and the first support section 86A act as support members that support the memory device installation section 88 at a position spaced from the container fixing section 84 in the direction of the central axis of the circular outer periphery of the container fixing section 84.
  • a circuit board 91 is provided on a board support plate 87 of the base 80 (first base 80A) of the sensing unit 110, and a memory device 20 is provided on a memory device installation portion 88.
  • the storage device 20 is fixed to a surface (storage device installation surface 88a) of the storage device installation portion 88 opposite to the board support plate 87.
  • the circuit board 91 is fixed to the surface of the board support plate 87 facing the storage device installation portion 88.
  • the circuit board 91 can be fixed to the board support plate 87 and the storage device 20 to the storage device installation portion 88 preferably by using screws, for example.
  • the AD converter 13 is electrically connected to the storage device 20 attached to the base 80 (first base 80A) of the sensing unit 110 via an internal container connection cable 52 . Specifically, the AD converter 13 converts the electrical signal (analog electrical signal) output from the preamplifier 11 into a digital signal by pulse modulation and stores it in a storage device 20 (data memory; indicated as "memory" in FIG. 28).
  • the storage device 20 has an output terminal that outputs the stored information.
  • a recorder in which the filter 12, AD converter 13, and storage device 20 are integrated can have an output terminal that outputs the stored information in the storage device 20, or a memory holder that is a housing that detachably holds the storage device 20 and has an output terminal.
  • an aneroid barometer is used as the barometer 93.
  • Barometers other than aneroid barometers can also be used for the barometer 93.
  • electric barometers such as capacitance and vibration types use electricity from the power supply 30 of the sound recording device 10A and hasten the drain of the battery power of the power supply 30.
  • an aneroid barometer can measure the air pressure inside the container 60 without requiring a power source, and a visually readable needle-type air pressure display method also does not require a power source.
  • the use of an aneroid barometer contributes to reducing drain on the battery power of the power supply 30 of the sound recording device 10A and to extending the recording time (recording period).
  • the container 60 housing the aneroid barometer uses a transparent hollow glass bulb formed by integrating a first hemispherical portion 61 and a second hemispherical portion 62 into a spherical shape, and the air pressure indicated by the needle of the aneroid barometer can be visually read from outside the container 60.
  • the aneroid barometer is used to check the pressure (internal pressure) inside the container 60, which is a hollow spherical transparent glass sphere formed by integrating a first hemispherical portion 61 and a second hemispherical portion 62, when the gas inside the container 60 is sucked in from outside the container 60 through an exhaust valve 63 and exhausted to reduce the pressure inside the container 60, and to check for the presence or absence of leakage (whether the reduced internal pressure of the container 60 is maintained stably) after exhaust from the exhaust valve 63 of the container 60, whose internal pressure has been reduced to a target pressure, is stopped and the container is left for a while.
  • the aneroid barometer is also used to check the internal pressure of the container 60 that has been dropped into water and then pulled out of the water.
  • all the power supply devices 30 in the container 60 of the subunit 120 are connected in parallel. All the power supply devices 30 in the container 60 of the subunit 120 are connected to a second switch device 94 (electrical device) provided on the second pedestal 80B via an in-container connection cable 52 (not shown) in the container 60 of the subunit 120.
  • An inter-container connecting cable 53 is provided between the container 60 of the sensing unit 110 and the container 60 of the subunit 120.
  • the first switch device 92 in the container 60 of the sensing unit 110 and the second switch device 94 in the container 60 of the subunit 120 are connected via the inter-container connecting cable 53.
  • All of the power supply devices 30 in the container 60 of the sensing unit 110 and all of the power supply devices 30 in the container 60 of the subunit 120 are all connected in parallel via the inter-container connecting cable 53, the first switch device 92, and the second switch device 94.
  • the power supply unit 30 in the container 60 of the sensing unit 110 and the power supply unit 30 in the container 60 of the sub-unit 120 are ultimately capable of supplying electricity to electronic and electrical equipment such as the preamplifier, filter, AD converter, memory device 20, and control electronic circuits of the sensing unit 110 through the first switch device 92.
  • the recording device 10A can maintain a long life for the power supply devices 30, enabling long-term continuous recording.
  • the first switch device 92 and the second switch device 94 each have a power supply circuit from the power supply device 30 to supply driving electricity to the first switch device 92 itself or the second switch device 94 itself.
  • This driving electricity is only needed to turn on the relay switch during operation.
  • a relay switch that is turned on does not require electricity because it mechanically maintains the on state.
  • a relay switch that is turned on is continuously maintained in the on state from the time the recording device 10A is operated until the observation and recording of underwater noise is completed, and electricity continues to be supplied to electrical equipment such as the preamplifier, filter, AD converter, memory device 20, and control electronic circuit of the sensing unit 110.
  • the recording unit 14 is controlled to be turned on and off by a program preset in a control electronic circuit such as a control IC provided on a circuit board 91 in the container 60 of the sensing unit 110.
  • a control electronic circuit such as a control IC provided on a circuit board 91 in the container 60 of the sensing unit 110.
  • the recording unit 14 records (records) the sound acting on the sound sensor 40 by storing the electric signal output by the sound sensor 40 in the storage device 20.
  • the recording unit 14 When the recording unit 14 is in an on state, the recording unit 14 directly stores the analog electric signal output by the sound sensor 40 or stores the digital signal after converting the analog electric signal into a digital signal in the storage device 20.
  • the recording unit 14 can select and execute both continuous recording and time lapse recording (intermittent recording) by a program.
  • the electronic and electrical device fixed to the first pedestal 80A can be supported by the pedestal 80 at a position separated from the inner surface of the container 60, and contact with the inner surface of the container 60 can be prevented. As a result, it is possible to prevent the pressure resistance of the container 60 from being impaired due to the electrical device in the container 60 coming into contact with the container.
  • the base 80 (second base 80B) of the subunit 120 is configured by omitting the board support plate 87, third support portion 86C, storage device installation portion 88, and fourth support portion 86D from the first base 80A, and instead of the board support plate 87, a top plate 89 is supported on the base main plate 85 by the second support portion 86B.
  • the top plate 89 is fixed to the second support portion 86B fixed to the base main plate 85, and is supported by the second support portion 86B in a direction parallel to the base main plate 85 at a distance from the container fixing portion 84 to the base main plate 85.
  • the power supply device 30 of the subunit 120 is provided on the container fixing portion 84 of the second pedestal 80B and housed in the area between the container fixing portion 84 and the pedestal main plate 85.
  • the power supply device 30 provided on the container fixing portion 84 of the second pedestal 80B and housed in the area between the container fixing portion 84 and the pedestal main plate 85 is fixed to the second pedestal 80B by using a string-like restraining device (not shown) such as an insulation lock.
  • the subunit 120 can also fix electronic and electrical devices such as the power supply unit 30 and switch device 92 and the barometer 93 provided on the second base 80B to the container 60. Furthermore, by fixing the base 80 to the container 60 (specifically, the second hemispherical portion 62), the electronic and electrical devices etc. fixed to the second base 80B can be supported by the base 80 at a position separated from the inner surface of the container 60, and can be prevented from contacting the inner surface of the container 60. As a result, it is possible to prevent the pressure resistance of the container 60 from being impaired due to the electrical devices of the container 60 coming into contact with the container.
  • the first base 80A may be configured, for example, by connecting the container fixing portion, the storage device installation portion, and the power supply installation portion, each of which is a separate component, with a connecting member.
  • the configuration in which the disk-shaped container fixing portion 84 also serves as the power supply installation portion, as in the first base 80A and the second base 80B illustrated in Figures 3 to 10 provides advantages such as a reduction in the number of components of the base and improved assembly work efficiency due to a simplified structure.
  • the first base 80A may also be configured so that the storage device installation section also serves as the power supply device installation section.
  • the first pedestal 80A may also adopt a configuration in which the memory device installation portion 88 also serves as the substrate support plate 87.
  • the first pedestal 80A may also adopt a configuration in which the memory device installation portion 88 also serves as the substrate support plate 87, the pedestal main plate 85 is omitted, and the memory device installation portion 88 is supported by a support member at a position spaced apart from the container fixing portion 84 with respect to the container fixing portion 84.
  • the top plate 89 of the first base 80A may be omitted.
  • the second pedestal 80B may also adopt a configuration in which the top plate 89 is omitted. When the top plate 89 is omitted in the second pedestal 80B illustrated in Figures 7 to 10, the attachment position of the barometer 93 attached to the top plate 89 may be changed to the pedestal main plate 85 relative to the second pedestal 80B.
  • the recording device for example, for the recording device 10B illustrated in Figure 2, can have two sensor cables 51 and two plate-shaped sound sensors 41, one at the tip of each sensor cable 51 and fixed to the inner surface of the first hemispherical portion 61 of the container 60 of the sensing unit 110, and a configuration in which the frequency characteristics of the two sound sensors 41 are different from each other can also be adopted.
  • FIG. 11 is a schematic diagram showing a sound recording device 10C according to a third embodiment of the present invention
  • FIG. 12 is a schematic diagram showing a sound recording device 10D according to a fourth embodiment of the present invention.
  • components common to the recording devices 10A and 10B of the first and second embodiments are given the same reference numerals, and their description will be simplified or omitted.
  • the recording devices 10C and 10D of the third and fourth embodiments are single-ball type recording devices having only one container 60.
  • the container 60 contains a base 80 on which electronic and electrical devices such as the power supply 30 and the electronic and electrical devices that constitute the recording unit 14 are mounted.
  • the base of the sound recording devices 10C and 10D of the third and fourth embodiments is also referred to as a third base in order to distinguish it from the bases of the sound recording devices 10A and 10B of the first and second embodiments.
  • the third base is given the reference numeral 80C in the drawings.
  • the sound recording devices 10C and 10D themselves correspond to a device unit and a device-containing ball.
  • the recording devices 10C and 10D of the third and fourth embodiments each have only one sound sensor.
  • the sound recording device 10C of the third embodiment has a plate-shaped sound sensor 41 fixed to the inner surface of a container 60.
  • the sound sensor 41 is connected to the sound recording unit 14 (specifically, the preamplifier 11 in Fig. 28) via a sensor cable 51.
  • the sound sensor 40 of the sound recording device 10D of the fourth embodiment is provided outside the container 60.
  • the sound sensor 40 is connected to the sound recording unit 14 (specifically, the preamplifier 11 in Fig. 28) via a sensor cable 51.
  • the sensor cable 51 is passed through a penetrator 70 (first penetrator 71) provided in the container 60 so as to communicate with the inside and outside of the container 60.
  • the fourth embodiment of the recording device 10D can adopt a configuration similar to that of the third embodiment of the recording device 10C, except that it has a sound sensor 40 at the end of a sensor cable 51 that passes through the container 60 from inside the container 60 and extends outside the container 60.
  • a waterproof tape 64 is affixed to the outer surface of the container 60, covering the boundary between the first hemispherical portion 61 and the second hemispherical portion 62 of the container 60.
  • the waterproof tape 64 is affixed to the container 60 with one adhesive side bonded to the outer surface of the container 60.
  • the waterproof tape 64 is disposed on the outer surface of the container 60, extending along the boundary between the first hemispherical portion 61 and the second hemispherical portion 62, and covers the entire boundary between the first hemispherical portion 61 and the second hemispherical portion 62.
  • the waterproof tape 64 can improve the waterproofness of the boundary between the first hemispherical portion 61 and the second hemispherical portion 62.
  • the waterproof tape 64 which covers the entire boundary between the first hemispherical portion 61 and the second hemispherical portion 62, is not limited to this embodiment, but can be widely applied to a container 60 in which the first hemispherical portion 61 and the second hemispherical portion 62 are integrated to form a hollow sphere.
  • the base 80 (third base 80C) of this recording device 10C has a container fixing portion 81 fixed to the container 60, and a storage device mounting portion 82 formed with a storage device mounting surface 82a on which the storage device 20 is provided. 13 to 15, more specifically, the third base 80C has a container fixing part 81 formed in a disk shape, a storage device installation part 82 formed in a plate shape, and a support part 83 provided between the container fixing part 81 and the storage device installation part 82 and connecting the container fixing part 81 and the installation part 82.
  • the disk-shaped container fixing part 81 is provided on the container 60 by adhesively fixing a circular outer periphery to the second hemispherical part 62 of the container 60 using an adhesive, similar to the container fixing part 84 of the sound recording device 10A of the first embodiment.
  • the support pillars 83 are provided between the container fixing part 81 and the installation part 82.
  • the support pillars 83 support the storage device installation part 82 in a position spaced apart from the container fixing part 81 in the direction of the central axis of the circular outer periphery of the container fixing part 81 (perpendicular to the surface direction of the container fixing part 81) in a direction parallel to the container fixing part 81.
  • the support pillars 83 act as support members that support the storage device installation part 82 in a position spaced apart from the container fixing part 81 in the direction of the central axis of the circular outer periphery of the container fixing part 81.
  • the power supply and sound recording unit 20A is held in the storage device installation section 82 by a storage device holder 171 provided on the storage device installation surface 82a side of the storage device installation section 82.
  • the storage device holder 171 has a receiving member 172 fixed to the storage device installation section 82, and a pressing member 173 that is removably attached to the receiving member 172 and holds the power supply and sound recording unit 20A against the storage device installation section 82 from the side opposite the storage device installation section 82.
  • the power supply and sound recording unit 20A held down against the storage device installation section 82 by the pressing member 173 of the storage device holder 171 can be removed from the storage device installation section 82 by removing the pressing member 173 of the storage device holder 171 from the receiving member 172.
  • An L-shaped stay 82b for holding the excess length 51a of the sensor cable 51 is erected on the side of the storage device installation surface 82a of the storage device installation section 82 of the third base 80C shown in Figures 13 to 15.
  • the excess length 51a of the sensor cable 51 is wound up compactly and held by the L-shaped stay 82b using an insulation lock.
  • the sound sensor 41 starts out in the form of a rectangular parallelepiped square plate, and the lead wires 43, the sensor element 44, etc. are embedded in plastic 45 (hereinafter also referred to as embedded plastic) which is cut or otherwise processed to form an entire one side of the embedded plastic 45 into a curved surface 46 (spherical surface) which matches the inner surface of the first hemispherical portion 61 of the container 60, and the curved surface 46 is adhesively fixed to the inner surface of the first hemispherical portion 61 of the container 60 as shown in FIG. 16 .
  • embedded plastic plastic 45
  • curved surface 46 sinherical surface
  • the sound sensor 41 may be produced, for example, by placing the lead wire exposed at the tip of the sensor cable 51 and the sensor element (sound sensor) at the tip of the lead wire into a mold, filling the mold with a hardening liquid resin, and hardening the resin to form an embedded plastic in which the lead wire tip and the sensor element are embedded.
  • a sound sensor can be obtained in which a curved surface (spherical surface) that matches the inner surface of the first hemispherical portion 61 of the container 60 is formed in the embedded plastic by the inner surface of the mold.
  • the adhesive 42 (see Figures 13 to 15) that bonds and fixes the sound sensor 41 to the inner surface of the first hemispherical portion 61 of the container 60 is an adhesive resin material that can be cured from a curable liquid resin material state (liquid material state) to form a resin and bond the sound sensor 41 to the inner surface of the first hemispherical portion 61 of the container 60.
  • the adhesive 42 in Figures 13 to 15 shows the adhesive 42 in a cured resin state (cured resin state).
  • the adhesive 42 is provided in a liquid material state between the sound sensor 41 and the inner surface of the first hemispherical portion 61 of the container 60, and bonds and fixes the sound sensor 41 to the inner surface of the first hemispherical portion 61 of the container 60 by curing.
  • the adhesive 42 provided in a liquid material state between the sound sensor 41 and the inner surface of the first hemispherical portion 61 of the container 60 is preferably degassed and defoamed before the first hemispherical portion 61 and the second hemispherical portion 62 are joined together to assemble the container 60.
  • the adhesive 42 in a liquid material state may start to harden before the degassing and defoaming process, during the degassing and defoaming process, or after the degassing and defoaming process is completed. However, the degassing and defoaming process is performed when the adhesive 42 is in a liquid material state and air bubbles can move within the liquid adhesive 42.
  • the adhesive 42 By carrying out the degassing and defoaming process on the adhesive 42, it is possible to prevent the fixing force of the adhesive 42 from being too small even when the inside of the container 60 is depressurized. This makes it possible to more reliably fix the sound sensor 41 to the inner surface of the glass container 60. It is also possible to prevent absorption of sound waves by air bubbles.
  • the adhesive 42 There are no particular limitations on the adhesive 42, and any known adhesive can be used.
  • the adhesive 42 is preferably made of a resin whose acoustic impedance is close to that of water or the container material.
  • the adhesive 42 (adhesive in a cured resin state) preferably has an acoustic impedance of 1.5 ⁇ 10 5 to 3.0 ⁇ 10 6 g/cm 2 sec (sec is seconds) calculated from "density of the medium ⁇ (kg/m 3 )" and "speed of sound in the medium c (km/s)" by ⁇ c at room temperature and atmospheric pressure in the range of 1013.25 ⁇ 50 hPa.
  • Room temperature means a temperature that is not particularly cooled or heated, that is, an ordinary temperature, and examples of the temperature include a temperature of 15 to 25° C.
  • the adhesive 42 may be made of, for example, silicone or epoxy resin.
  • the sound sensor may be attached to the inner surface of the first hemispherical portion 61 of the container 60 by removing the sheath at the tip of the sensor cable 51 to expose the lead wire 43, and the sensor element 44 (sound sensor) provided at the tip of the lead wire 43, which may be fixed to the inner surface of the first hemispherical portion 61 of the container 60 using adhesive tape.
  • the power supply and recording device unit 20A shown in Figs. 13 to 15 has a structure in which the recording unit 14 including the storage device 20 and a battery (power supply device) are built into an exterior case.
  • the power supply and recording device unit 20A requires only a short power supply path between the storage device 20 and the power supply device 30, minimizing the loss of battery capacity in the power supply device due to discharge.
  • the recording device 10C shown in Figures 13 to 15 does not have a switch device or circuit board, and does not require power supply to the switch device or circuit board, which also effectively contributes to reducing loss of battery capacity in the power supply device of the power supply and recording device unit 20A. For these reasons, the recording device 10C shown in Figs. 13 to 15 has a configuration that is advantageous for extending the available recording time.
  • the power supply and recording equipment unit 20A has a recording unit 14 having a configuration as illustrated in FIG. 28, and the base end of the sensor cable 51 opposite the tip where the sound sensor 41 is provided is electrically connected to the preamplifier 11 of the recording unit 14.
  • the power supply and recording equipment unit 20A can preferably be configured in such a way that the preamplifier 11, filter 12, AD converter 13, memory (storage device 20) of the recording unit 14 configured as shown in Figure 28, and further a battery (power supply device 30) are integrated into an integrated unit (electronic and electrical equipment unit) which is removably housed in an exterior case.
  • Assembling the electronic and electrical equipment unit outside the exterior case ensures reliable electrical connections between the unit components.
  • the electronic and electrical equipment unit has multiple unit components fixed together, relative displacement between the unit components can be prevented even if vibration or impact forces act on them while they are housed in the container 60.
  • the electronic and electrical equipment unit has the advantage of being able to prevent poor connection or disconnection at connections such as soldered joints and connector connections that electrically connect the unit components, and to maintain a stable electrical connection state.
  • the power supply and recording device unit 20A is not limited to a configuration having an exterior case, and a configuration without an exterior case in which the electronic and electrical device unit itself is attached to a base is also possible. However, in terms of preventing relative displacement between the unit components even if vibration or impact forces act on the electronic and electrical device unit housed in the container 60, and maintaining a stable electrical connection between the unit components, a configuration in which the electronic and electrical device unit is housed in an exterior case is advantageous for the power supply and recording device unit 20A.
  • the recording devices 10C and 10D illustrated in Figures 11 and 12 each have only one sound sensor.
  • the recording device may also be configured to have two types of sound sensors with different frequency characteristics depending on the type of underwater sound to be observed and recorded.
  • the recording device such as the recording device 10C illustrated in Figure 11, has two sensor cables 51 and two plate-shaped sound sensors 41, one at the tip of each sensor cable 51 and fixed to the inner surface of the first hemispherical portion 61 of the container 60, and it is also possible to adopt a configuration in which the frequency characteristics of the two sound sensors 41 are different from each other.
  • the recording device may be configured such that, for example, in the recording device 10D illustrated in FIG.
  • the container fixing portion is not limited to a disk shape, but may be annular.
  • the disk-shaped container-fixing portion 81 and the annular container-fixing portion can have their entire outer peripheries abutted against the inner surface of the second hemispherical portion 62 of the container 60 and be adhesively fixed to the second hemispherical portion 62 using an adhesive. Therefore, the position and orientation of the base 80 relative to the second hemispherical portion 62 can be easily adjusted when adhesively fixed to the second hemispherical portion 62.
  • buoyancy force obtained by subtracting the gravity acting on the entire buoyancy adjustment unit 162A from the buoyancy of the buoyancy adjustment unit 162A is greater than the buoyancy force obtained by subtracting the gravity acting on the entire communication unit 142A from the buoyancy of the communication unit 142A, there is a risk that the rising buoyancy adjustment unit 162A will overtake the communication unit 142A and the ropes (second rope 164 and third rope 165) will become entangled. If the ropes become entangled, problems such as collisions between the recording device unit 161, buoyancy adjustment unit 162A, communication unit 142A, and container-equipped probe main body 150A are likely to occur.
  • the hollow glass sphere used in the container 60 of the sound recording device has a high pressure resistance sufficient to withstand use on the deep seabed at a depth of 6000 m, and is also advantageous in terms of weight reduction.
  • the configuration in which the power supply unit 30 is housed in this container 60 makes it unnecessary to ensure the pressure resistance of the power supply unit 30.
  • the sound recording device houses the power supply unit 30, an AD converter, a storage device 20, and various electronic and electrical devices such as a preamplifier as necessary in one or more containers 60. There is no need to ensure the pressure resistance of electronic and electrical devices other than the power supply unit 30 housed in the hollow glass sphere container 60. Ensuring pressure resistance of equipment tends to lead to an increase in size and weight of the equipment.
  • part in the specification means a unit that processes at least one function or operation, which may be embodied as hardware or software, or a combination of hardware and software.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un dispositif d'enregistrement de son (10A) comportant un récipient sphérique creux (60), un dispositif d'alimentation électrique (30) qui est disposé à l'intérieur du récipient (60), une unité d'enregistrement de son (14) qui comprend un dispositif de stockage (20) et est disposée à l'intérieur du récipient (60), et un capteur de son (40) qui est fixé à la surface intérieure du récipient (60) et/ou un capteur de son (40) qui est disposé à l'extérieur du récipient, le ou les capteurs de son étant raccordés électriquement à l'unité d'enregistrement de son (14) par l'intermédiaire d'un câble (51).
PCT/JP2023/045512 2022-12-26 2023-12-19 Dispositif d'enregistrement de son et sonde subaquatique WO2024143070A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022208460 2022-12-26
JP2022-208460 2022-12-26

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WO2024143070A1 true WO2024143070A1 (fr) 2024-07-04

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060201243A1 (en) * 2002-10-02 2006-09-14 Yves Auffret Ocean bottom floor hydrophones and seismometers
US20110242943A1 (en) * 2008-10-11 2011-10-06 Timo Klinge Hydrophone and Hydrophone Assembly for Performing Stereophonic Underwater Sound Recordings
CN108563176A (zh) * 2018-07-04 2018-09-21 哈尔滨工业大学 一种用于海洋探测的浮标微系统
WO2020217108A1 (fr) * 2019-04-26 2020-10-29 King Abdullah University Of Science And Technology Système de détection submersible pour surveillance d'eau et de sédiments
US20220120927A1 (en) * 2020-10-15 2022-04-21 Ion Geophysical Corporation Neutrally buoyant particle velocity sensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060201243A1 (en) * 2002-10-02 2006-09-14 Yves Auffret Ocean bottom floor hydrophones and seismometers
US20110242943A1 (en) * 2008-10-11 2011-10-06 Timo Klinge Hydrophone and Hydrophone Assembly for Performing Stereophonic Underwater Sound Recordings
CN108563176A (zh) * 2018-07-04 2018-09-21 哈尔滨工业大学 一种用于海洋探测的浮标微系统
WO2020217108A1 (fr) * 2019-04-26 2020-10-29 King Abdullah University Of Science And Technology Système de détection submersible pour surveillance d'eau et de sédiments
US20220120927A1 (en) * 2020-10-15 2022-04-21 Ion Geophysical Corporation Neutrally buoyant particle velocity sensor

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