An underwater wave and current data acquisition system

Abstract

The utility model provides a kind of seabed wave flow data acquisition system, comprising: underwater monitoring equipment, underwater photoelectric connection node structure, underwater-water surface communication node structure, water surface photoelectric connection node structure and water surface monitoring terminal;Wherein, underwater monitoring equipment includes multiple acoustic wave flow monitoring equipment, and each acoustic wave flow monitoring equipment is used to collect seabed wave flow data;Underwater photoelectric connection node structure uses optical fiber cable to butt joint each acoustic wave flow monitoring equipment;Underwater-water surface communication node structure uses optical fiber cable to butt joint underwater photoelectric connection node structure and water surface photoelectric connection node structure;Water surface photoelectric connection node structure uses optical fiber cable to butt joint water surface monitoring terminal.The utility model can have the long distance, high speed, real-time communication of multiple sensing data, and guarantee the reliability of long-term continuous monitoring of seabed wave flow data and the like effects.

Description

Technical Field

[0001] This utility model relates to the field of marine monitoring technology, and in particular to a seabed wave current data acquisition system. Background Technology

[0002] Long-term, high-frequency monitoring of seabed wave and current data (including hydrological elements such as ocean waves and currents) is of great significance for marine engineering safety, marine resource development, and marine scientific research.

[0003] Among existing monitoring equipment, sensors such as acoustic Doppler current profilers mostly use electrical communication interfaces to achieve data transmission. Serial communication can achieve long-distance transmission, but it suffers from insufficient transmission bandwidth, inability to display waveforms in real time, and inability to download raw data under high sampling frequency conditions. While Ethernet communication has higher bandwidth and supports raw data acquisition, its transmission distance is usually limited to within 100 meters, which is difficult to meet the deployment requirements of remote areas or complex seabed topography.

[0004] Furthermore, traditional electrical signal transmission methods are susceptible to electromagnetic interference in complex marine environments, affecting data transmission quality. Additionally, if fiber optic cables are damaged or components malfunction on submarine equipment, the entire system often needs to be recovered and repaired, resulting in high maintenance costs and long operation cycles.

[0005] In summary, existing monitoring equipment cannot guarantee the reliability of long-term continuous monitoring of seabed wave and current data. Utility Model Content

[0006] This utility model provides a submarine wave current data acquisition system to solve the problems existing in related technologies. The technical solution is as follows:

[0007] In a first aspect, embodiments of this utility model provide a submarine wave current data acquisition system, comprising: underwater monitoring equipment, an underwater photoelectric connection node structure, an underwater-surface communication node structure, a surface photoelectric connection node structure, and a surface monitoring terminal; wherein;

[0008] The underwater monitoring equipment includes multiple acoustic wave and current monitoring devices, each of which is used to collect seabed wave and current data.

[0009] The underwater optoelectronic connection node structure uses fiber optic cables to connect each of the acoustic wave flow monitoring devices.

[0010] The underwater-surface connection node structure uses optical fiber cables to connect the underwater optoelectronic connection node structure and the surface optoelectronic connection node structure;

[0011] The water surface photoelectric connection node structure uses fiber optic cables to connect to the water surface monitoring terminal.

[0012] In one embodiment, the underwater optoelectronic connection node structure includes a first housing, a first dual-headed multi-pin watertight base, a first multi-channel single-mode fiber optic transceiver, a first switch, a first DC-DC step-down power supply module, and a first dual-headed multi-pin watertight connector cable; wherein...

[0013] The first dual-head multi-pin watertight base, the first switch, the first multi-channel single-mode fiber optic transceiver, and the first DC-DC step-down power supply module are sealed inside the first housing.

[0014] One end of the first double-ended multi-pin watertight plug cable is plugged into multiple acoustic wave flow monitoring devices, and the other end is plugged into one end of the first double-ended multi-pin watertight base.

[0015] The other end of the first dual-head multi-pin watertight base is connected to the first switch.

[0016] The first multi-channel single-mode fiber optic transceiver is connected to the first switch and the underwater-to-surface communication node structure;

[0017] The first DC-DC step-down power supply module is connected to the power supply terminal of the first dual-head multi-pin watertight base, the first multi-channel single-mode fiber optic transceiver, the first switch, and the underwater-surface communication node structure.

[0018] In one embodiment, the first housing includes a first hatch and a first body; wherein...

[0019] The first cabin has a first opening end, a first cavity communicating with the first opening end, and a first base plate located in the first cavity. The first switch, the first multi-channel single-mode fiber optic transceiver, and the first DC-DC step-down power supply module are installed on the first base plate.

[0020] The lower end of the first hatch is sealed around the periphery of the first opening end, and the upper end of the first hatch is provided with a first accommodating cavity and a second accommodating cavity communicating with the first cavity. The first accommodating cavity is sealed and incorporated into the underwater-surface communication node structure at one end connected to the first multi-channel single-mode fiber optic transceiver.

[0021] The first dual-headed multi-needle watertight base is sealed and installed in the second accommodating cavity.

[0022] In one embodiment, the first cabin body is made of titanium alloy, the first cabin cover is made of polyoxymethylene, and the first bottom plate is made of aluminum alloy.

[0023] In one embodiment, the water surface optoelectronic connection node structure includes a second housing, a second dual-headed multi-pin watertight base, a second multi-channel single-mode fiber optic transceiver, a second switch, a second DC-DC step-down power supply module, and a second dual-headed multi-pin watertight connector cable; wherein...

[0024] The second dual-head multi-pin watertight base, the second switch, the second multi-channel single-mode fiber optic transceiver, and the second DC-DC step-down power supply module are sealed inside the second housing.

[0025] One end of the second double-ended multi-pin watertight connector cable is plugged into the water surface monitoring terminal, and the other end is plugged into one end of the second double-ended multi-pin watertight base.

[0026] The other end of the second dual-head multi-pin watertight base is connected to the second switch;

[0027] The second multi-channel single-mode fiber optic transceiver is connected to the second switch and the underwater-to-surface communication node structure;

[0028] The second DC-DC step-down power supply module is connected to the power supply terminal of the second dual-head multi-pin watertight base, the second multi-channel single-mode fiber optic transceiver, the second switch, and the underwater-surface communication node structure.

[0029] In one embodiment, the second housing includes a second hatch and a second body; wherein...

[0030] The second cabin is provided with a second opening end, a second cavity communicating with the second opening end, and a second bottom plate located in the second cavity. The second switch, the second multi-channel single-mode fiber optic transceiver, and the second DC-DC step-down power supply module are installed on the second bottom plate.

[0031] The lower end of the second hatch is sealed around the periphery of the second opening end. The upper end of the second hatch is provided with a third accommodating cavity and a fourth accommodating cavity that communicate with the second cavity. The third accommodating cavity is sealed and incorporated into the underwater-surface communication node structure at one end connected to the second multi-channel single-mode fiber optic transceiver.

[0032] The second double-headed multi-needle watertight base is sealed and installed in the fourth accommodating cavity.

[0033] In one embodiment, the second cabin is made of titanium alloy, the second cabin cover is made of polyoxymethylene, and the second bottom plate is made of aluminum alloy.

[0034] In one embodiment, the underwater-to-surface communication node structure includes an optical-electric composite cable; wherein,

[0035] The optoelectronic composite cable includes multiple single-mode optical fibers, a power conductor, and a protective layer. The protective layer covers the multiple single-mode optical fibers and the power conductor. One end of the multiple single-mode optical fibers is connected to the first multiple single-mode optical fiber transceiver, and the other end is connected to the second multiple single-mode optical fiber transceiver. One end of the power conductor is connected to the first DC-DC step-down power supply module, and the other end is connected to the second DC-DC step-down power supply module.

[0036] In one embodiment, the protective layer includes a TPU inner sheath, a TPU outer sheath, and a Kevlar filler layer; wherein,

[0037] The TPU inner sheath covers the multi-channel single-mode optical fiber and the power conductor;

[0038] The outer TPU sheath encloses the inner TPU sheath.

[0039] The Kevlar filling layer is located between the TPU inner sheath and the multi-channel single-mode optical fiber and the power conductor;

[0040] TPU refers to thermoplastic polyurethane elastomer.

[0041] In one embodiment, the water surface monitoring terminal includes: a third dual-head multi-needle watertight base, a third switch, a relay, a third DC-DC step-down module, and an industrial control computer; wherein,

[0042] One end of the third double-headed multi-pin watertight base is connected to one end of the second double-headed multi-pin watertight plug cable, and the other end of the multi-pin watertight base is connected to the third switch.

[0043] The third switch is connected to the industrial control computer, the relay, and the mains power grid;

[0044] The relay is connected to the third DC-DC step-down module;

[0045] The third DC-DC step-down module is connected to the power supply terminal of the third dual-head multi-pin watertight base.

[0046] The advantages or beneficial effects of the above technical solutions include at least the following:

[0047] The seabed wave current data acquisition system provided in this embodiment integrates an underwater photoelectric connection node structure, an underwater-surface connection node structure, and a surface photoelectric connection node structure into an optical fiber data transmission channel. This enables long-distance, high-speed, and real-time communication of multiple sensor data, ensuring the reliability of long-term continuous monitoring of seabed wave current data. As a result, it can support high-frequency acquisition, complete recording, and real-time transmission of seabed wave current data, while adapting to the harsh deployment and operation and maintenance conditions in marine engineering.

[0048] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0049] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed according to this utility model and should not be construed as limiting the scope of this utility model.

[0050] Figure 1 A structural diagram of a submarine wave current data acquisition system provided in an embodiment of this utility model;

[0051] Figure 2 An example diagram of the internal connection of an underwater photoelectric docking node structure provided for an embodiment of this utility model;

[0052] Figure 3 A structural plan view of a first housing provided for an embodiment of this utility model;

[0053] Figure 4 An example diagram of the internal connection of a water surface photoelectric connection node structure provided for an embodiment of this utility model;

[0054] Figure 5 A cross-sectional view of an optoelectronic composite cable provided for an embodiment of this utility model;

[0055] Figure 6 This is a structural diagram of a water surface monitoring terminal provided in an embodiment of the present utility model.

[0056] Explanation of reference numerals in the attached drawings: 10. Underwater monitoring equipment; 11. Acoustic wave and current monitoring equipment; 20. Underwater photoelectric connection node structure; 21. First shell; 211. First hatch; 2111. First accommodating cavity; 2112. Second accommodating cavity; 212. First cabin; 2121. First opening end; 22. First dual-headed multi-pin watertight base; 23. First multi-channel single-mode fiber optic transceiver; 24. First switch; 25. First DC-DC step-down power supply module; 26. First dual-headed multi-pin watertight connector cable; 30. Surface photoelectric connection node structure; 32. Second dual-headed multi-pin watertight base; 3 3. Second multi-channel single-mode fiber optic transceiver; 34. Second switch; 35. Second DC-DC step-down power supply module; 36. Second dual-head multi-pin watertight connector cable; 40. Underwater-to-surface connection node structure; 41. Optoelectronic composite cable; 411. Multi-channel single-mode fiber optic cable; 412. Power supply wire; 413. Protective layer; 4131. TPU inner sheath; 4132. TPU outer sheath; 4133. Kevlar filling layer; 50. Surface monitoring terminal; 51. Third dual-head multi-pin watertight base; 52. Third switch; 53. Relay; 54. Third DC-DC step-down module; 55. Industrial control computer. Detailed Implementation

[0057] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0058] In related technologies, ADCP (an instrument that measures the velocity and direction of water flow using the acoustic Doppler principle) cannot directly transmit data via optical fiber.

[0059] Based on this, in order to achieve long-distance real-time data transmission via network port, and while considering better cost, this utility model provides a submarine wave flow data acquisition system, which extends the real-time cable transmission distance by using underwater optical fiber transmission, and can realize high-frequency acquisition and real-time transmission of submarine wave flow data.

[0060] The seabed wave current data acquisition system of this utility model embodiment will now be described in detail with reference to the accompanying drawings.

[0061] like Figures 1-6 As shown, the seabed wave current data acquisition system includes: underwater monitoring equipment 10, underwater photoelectric connection node structure 20, underwater-surface connection node structure 40, surface photoelectric connection node structure 30, and surface monitoring terminal 50; among which,

[0062] The underwater monitoring equipment 10 includes multiple acoustic wave and current monitoring devices 11, each of which is used to collect seabed wave and current data (including parameters such as profile velocity and wave direction spectrum).

[0063] The underwater optoelectronic connection node structure 20 uses fiber optic cables to connect to each acoustic wave current monitoring device 11. In this way, the underwater optoelectronic connection node structure 20 can convert the electrical signals generated by each acoustic wave current monitoring device 11 when collecting seabed wave current data into optical signals.

[0064] The underwater-surface connection node structure 40 uses fiber optic cables to connect the underwater optoelectronic connection node structure 20 and the surface optoelectronic connection node structure 30. In this way, the underwater-surface connection node structure 40 can transmit optical signals from the underwater optoelectronic connection node structure 20 to the surface optoelectronic connection node structure 30.

[0065] The surface photoelectric connection node structure 30 is connected to the surface monitoring terminal 50 by fiber optic cable. In this way, the surface photoelectric connection node structure 30 can convert the optical signal from the surface photoelectric connection node structure 30 into an electrical signal and then transmit it to the surface monitoring terminal 50. Thus, the data of the seabed wave current collected by each acoustic wave current monitoring device 11 can be transmitted to the surface monitoring terminal 50.

[0066] It should be understood that the photoelectric conversion involved in the embodiments of this utility model is implemented using existing photoelectric conversion principles and does not involve any improvement to the photoelectric conversion method.

[0067] In this embodiment of the invention, the underwater photoelectric connection node structure 20, the underwater-to-surface connection node structure 40, and the surface photoelectric connection node structure 30 constitute the intermediate transmission node structures in the fiber optic transmission link from the underwater monitoring device 10 to the surface monitoring terminal 50. This divides the fiber optic transmission link from the underwater monitoring device 10 to the surface monitoring terminal 50 in the seabed wave current data acquisition system into multiple transmission node structures, supporting deployment requirements under complex seabed topographic conditions. Furthermore, if fiber optic cable damage or device failure occurs, only the faulty transmission node structure needs to be recovered and repaired, without requiring the entire system to be recovered and repaired. It features low maintenance costs and short operation cycles. Furthermore, by converting the seabed wave current data collected by the acoustic wave current monitoring device 11 underwater into optical signals for transmission, and then converting the optical signals back into electrical signals for transmission at the surface, it achieves photoelectric signal conversion between underwater and surface environments. This avoids electromagnetic interference affecting seabed wave current data transmission in complex marine environments. It can support high-bandwidth, long-distance, real-time transmission of raw seabed wave current data collected by the acoustic wave current monitoring device 11 under high sampling frequency conditions, achieving high-precision, high-frequency, and low-latency data acquisition and transmission, thereby ensuring the reliability of long-term continuous monitoring of seabed wave current data.

[0068] The seabed wave current data acquisition system provided in this embodiment of the present invention can realize seabed wave current data transmission that takes into account long distance, high bandwidth, high reliability and strong environmental adaptability. It can support high-frequency acquisition, complete recording and real-time transmission of seabed wave current data, and adapt to the harsh deployment and operation and maintenance conditions in marine engineering.

[0069] In one embodiment, the acoustic wave current monitoring device 11 can be an acoustic Doppler profiler or other existing monitoring devices that can collect seabed wave current data. This invention does not limit the specific device used.

[0070] In one embodiment, the underwater optoelectronic connection node structure 20 includes a first housing 21, a first dual-headed multi-pin watertight base 22, a first multi-channel single-mode fiber optic transceiver 23, a first switch 24, a first DC-DC step-down power supply module 25, and a first dual-headed multi-pin watertight connector cable 26; wherein...

[0071] The first dual-head multi-pin watertight base 22, the first switch 24, the first multi-channel single-mode fiber optic transceiver 23, and the first DC-DC step-down power supply module 25 are sealed inside the first housing 21.

[0072] One end of the first double-ended multi-pin watertight plug cable 26 is plugged into multiple acoustic wave flow monitoring devices 11, and the other end is plugged into one end of the first double-ended multi-pin watertight base 22.

[0073] The other end of the first dual-head multi-pin watertight base 22 is connected to the first switch 24;

[0074] The first multi-channel single-mode fiber optic transceiver 23 is connected to the first switch 24 and the underwater-to-surface communication node structure 40.

[0075] The first DC-DC step-down power supply module 25 is connected to the power supply terminal of the first dual-head multi-pin watertight base 22, the first multi-channel single-mode fiber optic transceiver 23, the first switch 24, and the underwater-to-surface communication node structure 40.

[0076] In specific implementation, the first switch 24 is used to connect the instrument end (i.e., the acoustic wave current monitoring device 11) and the fiber optic interface (i.e., the fiber optic interface of the first multi-channel single-mode fiber optic transceiver 23); the first multi-channel single-mode fiber optic transceiver 23 is responsible for converting the electrical signals from each acoustic wave current monitoring device 11 into optical signals; the first DC-DC step-down power supply module provides a stable operating voltage for each device in the underwater optoelectronic connection node structure 20 and the underwater-to-surface connection node structure 40; the setting of the first double-headed multi-pin watertight base 22 and the first double-headed multi-pin watertight plug cable 26 supports the underwater optoelectronic connection node structure 20 to connect with the external node structure (multiple acoustic wave current monitoring devices 11) through watertight connectors.

[0077] For example, the first multi-channel single-mode fiber optic transceiver 23 includes four single-mode fiber optic transceivers with a transmission distance ≥300m, such as... Figure 2 The fiber optic transceivers are A1, A2, A3, and A4. The first switch 24 can be an industrial-grade 5-port gigabit switch. The first DC-DC step-down power supply module 25 can be a 9V-36V input, 5V output DC-DC step-down power supply module, which can be an existing one, such as the MJWI15-24S05 DC-DC step-down power supply module or the URB2405LD-20WR3 DC-DC step-down power supply module. The first dual-head multi-pin watertight base 22 is a dual-head 6-pin watertight base, and correspondingly, the first dual-head multi-pin watertight plug cable 26 is a dual-head 6-pin watertight plug cable. That is, two pins of the first dual-head multi-pin watertight base 22 and the first dual-head multi-pin watertight plug cable 26 are dedicated to power transmission, and the other four pins are used for data signal transmission.

[0078] In this embodiment of the invention, hot-swappable replacement of key components (such as the underwater optoelectronic connection node structure 20 and the acoustic wave current monitoring device 11) can be supported, which can reduce the difficulty and cost of operation and maintenance. At the same time, considering the voltage loss under long-distance transmission, in order to improve the power supply voltage of the system, the underwater optoelectronic connection node structure 20 is equipped with a first DC-DC step-down power supply module 25 and a first multi-channel single-mode fiber optic transceiver 23, which realizes underwater optoelectronic signal conversion. This can not only support the stable operation of the underwater optoelectronic connection node structure 20, but also achieve high-precision, high-frequency, and low-latency data transmission, and further ensure the reliability of long-term continuous monitoring of seabed wave current data.

[0079] In one embodiment, the first shell 21 includes a first hatch 211 and a first cabin 212; wherein,

[0080] The first compartment 212 is provided with a first opening end 2121 and a first cavity communicating with the first opening end 2121. Figure 3 (not shown in the image) and the first base plate located in the first cavity ( Figure 3 (not shown in the image), the first switch 24, the first multi-channel single-mode fiber optic transceiver 23, and the first DC-DC step-down power supply module 25 are mounted on the first base plate;

[0081] The lower end of the first hatch 211 is sealed around the first opening end 2121. The upper end of the first hatch 211 is provided with a first accommodating cavity 2111 and a second accommodating cavity 2112 that communicate with the first cavity. The first accommodating cavity 2111 is sealed and incorporated into the underwater-surface communication node structure 40 at one end connected to the first multi-channel single-mode fiber optic transceiver 23.

[0082] The first double-headed multi-needle watertight base 22 is sealed and installed inside the second accommodating cavity 2112.

[0083] In specific implementation, sealant can be used to seal the end of the underwater-surface connection node structure 40 connected to the multi-channel first single-mode fiber optic transceiver inside the first accommodating cavity 2111, and sealant can be used to seal the first dual-head multi-pin watertight base 22 inside the second accommodating cavity 2112; two layers of O-rings can be used to seal the lower end of the first hatch cover 211 to the periphery of the first opening end 2121.

[0084] In this embodiment of the utility model, by sealing each component of the underwater optoelectronic docking node structure 20 within the first cabin 212, the underwater optoelectronic docking node structure 20 can be protected, ensuring its long-term stable operation in a high-pressure, highly corrosive marine environment.

[0085] In one embodiment, the first hull 212 is made of titanium alloy, the first hatch cover 211 is made of polyoxymethylene (POM), and the first bottom plate is made of aluminum alloy. In this way, the various components inside the underwater optoelectronic docking node structure 20 can be stabilized by the aluminum alloy bottom plate. At the same time, by constructing a pressure-resistant and corrosion-resistant hull structure for the underwater optoelectronic docking node structure 20 with a titanium alloy hull and a POM hatch cover, the pressure resistance and corrosion resistance of the underwater optoelectronic docking node structure 20 can be improved, further ensuring the long-term stable operation of the underwater optoelectronic docking node structure 20 in a high-pressure and highly corrosive marine environment.

[0086] In one embodiment, the water surface optoelectronic connection node structure 30 includes a second housing, a second dual-headed multi-pin watertight base 32, a second multi-channel single-mode fiber optic transceiver 33, a second switch 34, a second DC-DC step-down power supply module 35, and a second dual-headed multi-pin watertight connector cable 36; wherein...

[0087] The second dual-head multi-pin watertight base 32, the second switch 34, the second multi-channel single-mode fiber optic transceiver 33, and the second DC-DC step-down power supply module 35 are sealed inside the second housing.

[0088] One end of the second double-headed multi-pin watertight plug cable 36 is plugged into the water surface monitoring terminal 50, and the other end is plugged into the second double-headed multi-pin watertight base 32.

[0089] The other end of the second dual-head multi-pin watertight base 32 is connected to the second switch 34;

[0090] The second multi-channel single-mode fiber optic transceiver 33 is connected to the second switch 34 and the underwater-to-surface communication node structure 40.

[0091] The second DC-DC step-down power supply module 35 is connected to the power supply terminal of the second dual-head multi-pin watertight base 32, the second multi-channel single-mode fiber optic transceiver 33, the second switch 34, and the underwater-to-surface communication node structure 40.

[0092] In practical implementation, the implementation method of the surface photoelectric docking node structure 30 is similar to or the same as that of the underwater photoelectric docking node structure 20, and will not be elaborated here. It can be understood that the surface photoelectric docking node structure 30 is the inverse of the underwater photoelectric docking node structure 20.

[0093] In this embodiment of the invention, hot-swappable replacement of key components (such as the surface photoelectric connection node structure 30 and the surface monitoring terminal 50) can be supported, which can reduce the difficulty and cost of operation and maintenance. At the same time, considering the voltage loss under long-distance transmission, in order to improve the power supply voltage of the system, a second DC-DC step-down power supply module 35 and a second multi-channel single-mode fiber optic transceiver 33 are built into the surface photoelectric connection node structure 30 to realize the photoelectric signal conversion of the water surface. This can not only support the stable operation of the surface photoelectric connection node structure 30, but also achieve high-precision, high-frequency, and low-latency data transmission, and further ensure the reliability of long-term continuous monitoring of seabed wave current data.

[0094] In one embodiment, the second shell includes a second hatch and a second hull; wherein...

[0095] The second compartment is provided with a second opening end and a second cavity communicating with the second opening end. Figure 4 (not shown in the image) and the second bottom plate located in the second cavity ( Figure 4 (not shown in the image), the second switch 34, the second multi-channel single-mode fiber optic transceiver 33, and the second DC-DC step-down power supply module 35 are mounted on the second base plate;

[0096] The lower end of the second hatch is sealed around the second opening end. The upper end of the second hatch is provided with a third accommodating cavity and a fourth accommodating cavity that communicate with the second cavity. The third accommodating cavity is sealed and incorporated into the underwater-surface communication node structure 40 at one end connected to the second multi-channel single-mode fiber optic transceiver 33.

[0097] The second double-headed multi-needle watertight base 32 is sealed and installed in the fourth accommodating cavity.

[0098] In practice, the implementation of the second shell is similar to or the same as that of the first shell 21, and will not be described in detail here.

[0099] In this embodiment of the utility model, by sealing each component of the surface photoelectric connection node structure 30 within the second chamber, the surface photoelectric connection node structure 30 can be protected, ensuring its long-term stable operation in a high-pressure, highly corrosive marine environment.

[0100] In one embodiment, the second hull is made of titanium alloy, the second hatch cover is made of polyoxymethylene, and the second base plate is made of aluminum alloy. In this way, the various components inside the surface photovoltaic docking node structure 30 can be stabilized by the aluminum alloy base plate. At the same time, by constructing a pressure-resistant and corrosion-resistant hull structure for the surface photovoltaic docking node structure 30 using a titanium alloy hull and a polyoxymethylene hatch cover, the pressure resistance and corrosion resistance of the surface photovoltaic docking node structure 30 can be improved, further ensuring the long-term stable operation of the surface photovoltaic docking node structure 30 in a high-pressure and highly corrosive marine environment.

[0101] In one embodiment, the underwater-to-surface connectivity node structure 40 includes an optical-electric composite cable 41; wherein...

[0102] The optoelectronic composite cable 41 includes multiple single-mode optical fibers 411, a power conductor 412, and a protective layer 413. The protective layer 413 covers the multiple single-mode optical fibers 411 and the power conductor 412. One end of the multiple single-mode optical fibers 411 is connected to the first multiple single-mode optical fiber transceiver 23, and the other end is connected to the second multiple single-mode optical fiber transceiver 33. One end of the power conductor 412 is connected to the first DC-DC step-down power supply module 25, and the other end is connected to the second DC-DC step-down power supply module 35.

[0103] In practical implementation, the underwater-surface connection node structure 40 uses an optical fiber composite cable 41 as the backbone communication and power supply medium. Among them, multiple single-mode optical fibers 411 are used to transmit data as optical signals to realize long-distance signal transmission, and power supply wires 412 are used to provide power supply to realize power transmission from the surface to the underwater equipment.

[0104] For example, the power supply conductor 412 can be a 2-core 1 square millimeter power cable. The multi-channel single-mode fiber optic cable 411 can be an 8-channel single-mode fiber optic cable. Figure 5 Only four single-mode optical fibers are shown in the diagram, of which four single-mode optical fibers are operational and the other four are used as backup fibers. The optoelectronic composite cable 41 can be configured to be rolled up to 300m. The diameter of the optoelectronic composite cable 41 can be set to approximately 16mm.

[0105] In this embodiment of the invention, by encasing the multi-channel single-mode optical fiber 411 and power conductor 412, which serve as the backbone communication and power supply medium, within a protective layer 413, protection can be achieved for the multi-channel single-mode optical fiber 411 and power conductor 412. Simultaneously, bidirectional signal and power transmission between the underwater optoelectronic connection node structure 20 and the surface optoelectronic connection node structure 30 can be realized. In other words, the underwater-surface connection node structure 40 adopts an all-fiber communication architecture, possessing high bandwidth, low latency, and anti-electromagnetic interference characteristics, ensuring complete real-time transmission of high-frequency seabed wave current data. Furthermore, the separate data and power transmission channels effectively avoid signal interference, further ensuring the reliability of long-term continuous monitoring of seabed wave current data.

[0106] It should be understood that the underwater optoelectronic splicing node structure 20 and the surface optoelectronic splicing node structure 30 at the ends of the optoelectronic composite cable 41 can prevent the multi-path single-mode optical fiber and power conductor from being exposed at both ends of the optoelectronic composite cable 41, thereby better protecting the multi-path single-mode optical fiber and power conductor.

[0107] In one embodiment, the protective layer 413 includes a TPU inner sheath 4131, a TPU outer sheath 4132, and a Kevlar filler layer 4133; wherein,

[0108] The TPU inner sheath 4131 encapsulates the multi-channel single-mode optical fiber 411 and the power conductor 412 inside;

[0109] The outer TPU sheath 4132 encloses the inner TPU sheath 4131;

[0110] The Kevlar filling layer 4133 is located between the TPU inner sheath 4131, the multi-channel single-mode optical fiber 411, and the power conductor 412.

[0111] TPU refers to thermoplastic polyurethane elastomer, while Kevlar, also known as aramid fiber, is a high-performance synthetic fiber material.

[0112] This can be understood as the optical-electric composite cable 41 being covered with a tensile, abrasion-resistant, and marine-environment-resistant protective layer, meaning that the optical-electric composite cable 41 is an armored optical-electric composite cable with excellent tensile strength and abrasion resistance.

[0113] In this embodiment of the invention, by setting three protective layers for the optoelectronic composite cable 41, the optoelectronic composite cable 41 can operate stably for a long time in a high-pressure, highly corrosive marine environment.

[0114] In one embodiment, the underwater-surface connection node structure 40 may also include a steel wire rope (not shown in the figure), which is arranged in parallel with the optoelectronic composite cable 41, thereby enhancing the stability of the optoelectronic composite cable 41 underwater.

[0115] For example, the wire rope is made of stainless steel. For instance, the wire rope could be a stainless steel wire rope with a diameter of 12mm.

[0116] In one embodiment, the water surface monitoring terminal 50 includes: a third dual-head multi-needle watertight base 51, a third switch 52, a relay 53, a third DC-DC step-down module 54, and an industrial control computer 55; wherein...

[0117] One end of the third double-headed multi-pin watertight base 51 is connected to one end of the second double-headed multi-pin watertight plug cable 36, and the other end of the multi-pin watertight base is connected to the third switch 52.

[0118] The third switch 52 is connected to the industrial control computer 55, the relay 53 and the mains power grid;

[0119] Relay 53 is connected to the third DC-DC step-down module 54;

[0120] The third DC-DC step-down module 54 is connected to the power supply terminal of the third dual-head multi-pin watertight base 51.

[0121] In practical implementation, the third double-headed multi-pin watertight base 51 is used to connect the cable (i.e., the second double-headed multi-pin watertight plug cable 36) leading out from the surface photoelectric connection node structure 30. The third switch 52 is responsible for receiving the electrical signal data transmitted by the photoelectric connection node structure, transmitting the received electrical signal data to the industrial control computer 55, and providing power to the relay 53 and the industrial control computer 55. The industrial control computer 55 is used to store the seabed wave and current data collected by the acoustic wave and current monitoring equipment 11, which can support the remote monitoring function of the seabed equipment and reduce the need for on-site maintenance. The relay 53 is used to provide an undetermined operating voltage to the third double-headed multi-pin watertight base 51 through the third DC-DC step-down module 54.

[0122] For example, the third switch 52 can be an industrial-grade 8-port gigabit switch. The third dual-head multi-pin watertight base 51 can be the same as or similar to the first dual-head multi-pin watertight base 22 and the second dual-head multi-pin watertight base 32, and this utility model does not make specific limitations here. The industrial control computer 55 can be implemented using an existing industrial control computer. The third DC-DC step-down module 54 can be an existing 36V input, 12V output DC-DC step-down module, such as the LM2596 DC-DC step-down chip or the LM2675 DC-DC step-down chip.

[0123] In this embodiment of the invention, the surface monitoring terminal 50 can store the seabed wave and current data collected by the acoustic wave and current monitoring device 11 in real time and provide power to the entire system.

[0124] Based on the above description, the submarine wave current data acquisition system provided by this utility model embodiment can ensure the stable operation of each transmission node by adopting a redundant power supply design at each transmission node. The optical-electric composite cable 41 is equipped with four spare optical fibers, and the underwater optical-electric connection node structure 20 and the surface optical-electric connection node structure 30 reserve independent optical fiber transceiver slots, providing comprehensive maintenance redundancy. The underwater optical-electric connection node structure 20 and the surface optical-electric connection node structure 30 adopt a dual watertight interface design, ensuring the long-term stable operation of the submarine wave current data acquisition system in high-pressure, highly corrosive marine environments. Furthermore, the submarine wave current data acquisition system provided by this utility model embodiment, through its node-based design, supports hot-swappable replacement of key components, reducing maintenance difficulty and costs. It also supports rapid deployment and expansion, facilitating adjustments to the number and layout of equipment according to monitoring needs. In practical applications, this can reduce the construction and maintenance costs of the submarine wave current data acquisition system and improve the economic benefits of the project.

[0125] In summary, the seabed wave current data acquisition system provided by this utility model integrates the underwater photoelectric connection node structure 20, the underwater-surface connection node structure 40, and the surface photoelectric connection node structure 30 into an optical fiber data transmission channel. This enables long-distance, high-speed, and real-time communication of multiple sensor data, ensuring the reliability of long-term continuous monitoring of seabed wave current data. Consequently, it can support high-frequency acquisition, complete recording, and real-time transmission of seabed wave current data, while adapting to the harsh deployment and operation and maintenance conditions in marine engineering.

[0126] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0127] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multi-channel" means two or more channels, unless otherwise explicitly specified.

[0128] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A system for acquiring submarine wave current data, characterized in that, include: Underwater monitoring equipment, underwater photoelectric connection node structure, underwater-to-surface connection node structure, surface photoelectric connection node structure, and surface monitoring terminal; among which... The underwater monitoring equipment includes multiple acoustic wave and current monitoring devices, each of which is used to collect seabed wave and current data. The underwater optoelectronic connection node structure uses fiber optic cables to connect each of the acoustic wave flow monitoring devices. The underwater-surface connection node structure uses optical fiber cables to connect the underwater optoelectronic connection node structure and the surface optoelectronic connection node structure; The water surface photoelectric connection node structure uses fiber optic cables to connect to the water surface monitoring terminal.

2. The submarine wave current data acquisition system according to claim 1, characterized in that, The underwater optoelectronic connection node structure includes a first housing, a first dual-headed multi-pin watertight base, a first multi-channel single-mode fiber optic transceiver, a first switch, a first DC-DC step-down power supply module, and a first dual-headed multi-pin watertight connector cable; wherein... The first dual-head multi-pin watertight base, the first switch, the first multi-channel single-mode fiber optic transceiver, and the first DC-DC step-down power supply module are sealed inside the first housing. One end of the first double-ended multi-pin watertight plug cable is plugged into multiple acoustic wave flow monitoring devices, and the other end is plugged into one end of the first double-ended multi-pin watertight base. The other end of the first dual-head multi-pin watertight base is connected to the first switch. The first multi-channel single-mode fiber optic transceiver is connected to the first switch and the underwater-to-surface communication node structure; The first DC-DC step-down power supply module is connected to the power supply terminal of the first dual-head multi-pin watertight base, the first multi-channel single-mode fiber optic transceiver, the first switch, and the underwater-surface communication node structure.

3. The submarine wave current data acquisition system according to claim 2, characterized in that, The first shell includes a first hatch and a first compartment; wherein, The first cabin has a first opening end, a first cavity communicating with the first opening end, and a first base plate located in the first cavity. The first switch, the first multi-channel single-mode fiber optic transceiver, and the first DC-DC step-down power supply module are installed on the first base plate. The lower end of the first hatch is sealed around the periphery of the first opening end, and the upper end of the first hatch is provided with a first accommodating cavity and a second accommodating cavity communicating with the first cavity. The first accommodating cavity is sealed and incorporated into the underwater-surface communication node structure at one end connected to the first multi-channel single-mode fiber optic transceiver. The first dual-headed multi-needle watertight base is sealed and installed in the second accommodating cavity.

4. The seabed wave current data acquisition system according to claim 3, characterized in that, The first cabin is made of titanium alloy, the first cabin cover is made of polyoxymethylene, and the first bottom plate is made of aluminum alloy.

5. The submarine wave current data acquisition system according to claim 2, characterized in that, The water surface optoelectronic connection node structure includes a second housing, a second dual-headed multi-pin watertight base, a second multi-channel single-mode fiber optic transceiver, a second switch, a second DC-DC step-down power supply module, and a second dual-headed multi-pin watertight connector cable; wherein... The second dual-head multi-pin watertight base, the second switch, the second multi-channel single-mode fiber optic transceiver, and the second DC-DC step-down power supply module are sealed inside the second housing. One end of the second double-ended multi-pin watertight connector cable is plugged into the water surface monitoring terminal, and the other end is plugged into one end of the second double-ended multi-pin watertight base. The other end of the second dual-head multi-pin watertight base is connected to the second switch; The second multi-channel single-mode fiber optic transceiver is connected to the second switch and the underwater-to-surface communication node structure; The second DC-DC step-down power supply module is connected to the power supply terminal of the second dual-head multi-pin watertight base, the second multi-channel single-mode fiber optic transceiver, the second switch, and the underwater-surface communication node structure.

6. The seabed wave current data acquisition system according to claim 5, characterized in that, The second hull includes a second hatch and a second hull; wherein, The second cabin is provided with a second opening end, a second cavity communicating with the second opening end, and a second bottom plate located in the second cavity. The second switch, the second multi-channel single-mode fiber optic transceiver, and the second DC-DC step-down power supply module are installed on the second bottom plate. The lower end of the second hatch is sealed around the periphery of the second opening end. The upper end of the second hatch is provided with a third accommodating cavity and a fourth accommodating cavity that communicate with the second cavity. The third accommodating cavity is sealed and incorporated into the underwater-surface communication node structure at one end connected to the second multi-channel single-mode fiber optic transceiver. The second double-headed multi-needle watertight base is sealed and installed in the fourth accommodating cavity.

7. The seabed wave current data acquisition system according to claim 6, characterized in that, The second cabin is made of titanium alloy, the second hatch is made of polyoxymethylene, and the second bottom plate is made of aluminum alloy.

8. The seabed wave current data acquisition system according to claim 5, characterized in that, The underwater-to-surface communication node structure includes an optical-electric composite cable; wherein... The optoelectronic composite cable includes multiple single-mode optical fibers, a power conductor, and a protective layer. The protective layer covers the multiple single-mode optical fibers and the power conductor. One end of the multiple single-mode optical fibers is connected to the first multiple single-mode optical fiber transceiver, and the other end is connected to the second multiple single-mode optical fiber transceiver. One end of the power conductor is connected to the first DC-DC step-down power supply module, and the other end is connected to the second DC-DC step-down power supply module.

9. The seabed wave current data acquisition system according to claim 8, characterized in that, The protective layer comprises a TPU inner sheath, a TPU outer sheath, and a Kevlar filler layer; wherein... The TPU inner sheath covers the multi-channel single-mode optical fiber and the power conductor; The outer TPU sheath encloses the inner TPU sheath. The Kevlar filling layer is located between the TPU inner sheath and the multi-channel single-mode optical fiber and the power conductor; TPU refers to thermoplastic polyurethane elastomer.

10. The seabed wave current data acquisition system according to claim 5, characterized in that, The water surface monitoring terminal includes: a third dual-head multi-needle watertight base, a third switch, a relay, a third DC-DC step-down module, and an industrial control computer; wherein... One end of the third double-headed multi-pin watertight base is connected to one end of the second double-headed multi-pin watertight plug cable, and the other end of the multi-pin watertight base is connected to the third switch. The third switch is connected to the industrial control computer, the relay, and the mains power grid; The relay is connected to the third DC-DC step-down module; The third DC-DC step-down module is connected to the power supply terminal of the third dual-head multi-pin watertight base.

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