A modular and reconfigurable long-term in-situ monitoring device and monitoring method

Abstract

The present invention discloses a modular and reconfigurable long-term in-situ monitoring device and a monitoring method. The detection device includes a fixed component, on which a physical and chemical parameter sensor interface, a multi-channel Raman detection system, a camera system, a current recording system, a control system, a power supply system, a lighting system, a floating body and an optical communication system are arranged. A releaser is arranged at the middle position of the top of the fixed component. The release end of the releaser is connected to one end of a connecting rod that passes through the fixed component, and the other end of the connecting rod is connected to a bottom counterweight through a manual releaser. The monitoring method using the monitoring device is to select a site and determine a monitoring position; prepare and debug the monitoring device and set monitoring parameters; after the monitoring device is lowered to the seabed, it is released by an external releaser to place the monitoring device on the bottom for monitoring. After the monitoring work is completed, the base counterweight is released by a releaser or a manual release for recovery. The present invention improves work efficiency, reduces operation risks, and has high positioning accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of deep sea in-situ monitoring, and in particular to a modular and reconfigurable long-term in-situ monitoring device and a monitoring method. Background Art

[0002] The rapid development of underwater submersible technologies such as remote operated vehicles (ROVs) and human occupier vehicles (HOVs) has provided more intuitive and efficient sampling and in-situ detection methods for ocean research, especially deep-sea research. The gradual commissioning of many domestic underwater submersibles, such as the Discovery, Sea Star 6000, and Sea Dragon III ROVs, and the Jiaolong, Deep Sea Warrior, and Struggler HOVs, has obtained a large amount of valuable in-situ data and samples, accelerating the process of understanding the deep sea.

[0003] So far, the results obtained by using underwater robots as a platform for sampling or in-situ detection are often random and isolated. However, the answers to major scientific questions such as the evolution of deep-sea hydrothermal and cold spring systems and the community changes of the deep-sea dark biosphere require a large amount of in-situ, long-term, and continuous observation data support. The method of using underwater robots as carrier submersibles for detection can no longer meet the detection needs of today's oceanographers. It is urgent to develop a platform that can perform in-situ, long-term, and continuous observations.

[0004] The seabed observation network can carry multiple types of observation nodes and be powered and communicated in real time by the shore. Many seabed observation networks have been built at home and abroad. However, due to the limitations of the long construction period and fixed observation area of ​​the seabed observation network, it is not possible to flexibly conduct continuous observation of geological phenomena such as deep-sea cold springs and hydrothermal fluids. Summary of the invention

[0005] In order to overcome the above problems existing in the prior art, the present invention proposes a modular-reconfigurable long-term in-situ monitoring device and a monitoring method.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a modular and reconfigurable long-term in-situ monitoring device, including a fixed component, on which a physical and chemical parameter sensor interface, a multi-channel Raman detection system, a camera system, an ocean current recording system, a control system, a power supply system, a lighting system, a float and an optical communication system are provided, a releaser is provided at the middle position on the top of the fixed component, a release end of the releaser is connected to one end of a connecting rod passing through the fixed component, and the other end of the connecting rod is connected to the bottom counterweight through a manual releaser.

[0007] The above-mentioned modular-reconfigurable long-term in-situ monitoring device, the fixed component includes a main frame and an extension frame, the main frame is divided into three layers, a floating body is arranged on the first layer of the main frame, the physical and chemical parameter sensor interface, the camera system, the current recording system and the lighting system are all installed on the first layer of the main frame, a control system is installed on the second layer of the main frame, an optical communication system is installed on the top of the second layer of the main frame, a multi-channel Raman detection system and a power supply system are installed on the third layer of the main frame, and an extension frame is arranged on the side of the third layer of the main frame for installing a Raman probe.

[0008] In the above-mentioned modular-reconfigurable long-term in-situ monitoring device, a connecting hook for connecting to a scientific research vessel is provided at the middle position of the top of the fixing component.

[0009] The above-mentioned modular-reconfigurable long-term in-situ monitoring device, the connecting hook is connected to one end of the external releaser, the other end of the external releaser is connected to one end of the optical cable bearing head through a photoelectric conversion mechanism, and the other end of the optical cable bearing head is connected to the optoelectronic composite optical cable or coaxial cable of the scientific research vessel.

[0010] The above-mentioned modular and reconfigurable long-term in-situ monitoring device, the manual release includes a pull pin, a spring, and a connecting plate, the connecting rod is provided with a release plate at one end close to the manual release, the connecting plate is provided with a through hole for the pull pin to pass through, the release plate and the connecting plate are fixed by a pull pin, and a spring is sleeved on the pull pin.

[0011] In the above-mentioned modular-reconfigurable long-term in-situ monitoring device, a lifting ring pin is arranged on the side of the bottom counterweight.

[0012] The above-mentioned modular-reconfigurable long-term in-situ monitoring device, the ocean current recording system includes a current meter and ADCP, the current meter is located on the side of the first layer of the main frame, the ADCP is installed on the side of the first layer of the main frame through a mounting frame, and the optical communication system includes a lander-mounted optical transmission end and a handheld optical transmission end, the lander-mounted optical transmission end is located on the top of the second layer of the main frame.

[0013] The monitoring method of any of the above modular-reconfigurable long-term in-situ monitoring devices comprises the following steps:

[0014] Step 1: Using the geophysical equipment carried by the research vessel and combining the existing geological data, conduct a survey and analysis of the topography and stratigraphic structure of the proposed survey area, preliminarily determine the seabed type, sediment distribution characteristics and thickness, analyze the operation risks, and finally observe in detail through a handheld optical terminal to target the equipment launch operation position;

[0015] Step 2: Test the lander monitoring device on the research vessel deck, connect it to the shipboard coaxial cable or optoelectronic composite optical cable, and test the power supply and communication performance;

[0016] Step 3: Use a winch to lift the monitoring device and lower it into the seawater. After the device is stable, lower it to the seabed at a uniform speed. During the lowering process, use an optical communication system to perform real-time analysis on the physical state and communication state of the monitoring device to determine the operating conditions.

[0017] Step 4: After reaching the designated monitoring position, the external releaser is released, the monitoring device is seated, and the control system is used to set the acquisition parameters of the detection device, set the observation area of ​​the camera system, set the sampling interval of the sensor and the camera system, and the working time startup interval;

[0018] Step 5: After the monitoring work is completed, the releaser releases the counterweight, and the monitoring device floats up by itself for recovery. After being recovered to the research vessel, the data is exported and converted to complete the in-situ monitoring of the hydrothermal and cold spring areas.

[0019] The above-mentioned monitoring method of a modular-reconfigurable long-term in-situ monitoring device, the control system includes an online mode and an offline mode. When connected to the coaxial cable or optoelectronic composite optical cable of the scientific research vessel, it is in the online mode, at which time the working time and interval of each unit of the monitoring device can be set; when disconnected from the coaxial cable or optoelectronic composite optical cable of the scientific research vessel, it is in the offline mode, at which time the monitoring device starts to work offline according to the working parameters set in the online mode;

[0020] In offline mode, the control system can access the monitoring device within the working window set in online mode, and has the same setting functions as online mode. When the control system ends the access, the monitoring device enters offline mode.

[0021] The beneficial effects of the present invention are as follows: 1. The modularized detachable and expandable lander long-term in-situ monitoring system of the present invention uses a current meter to investigate the in-situ ocean current velocity and flow direction distribution, and conducts fixed-point long-term observations of key waters, which can further establish a three-dimensional, spatiotemporal high-resolution hydrodynamic model, and provide an accurate physical background field as a basis for ecological environment simulation; a multi-channel Raman detection system is used to simultaneously conduct multi-point research on the concentration distribution characteristics of CH4, H2S and other biogenic elements near cold spring vents, and provide in-situ data support for the carbon-sulfur conversion channel in the cold spring area; a camera system is used to obtain image information of plankton, swimming animals, benthic animals, red tide algae, and fouling organisms, and morphological identification and metagenomic methods are used to study their biodiversity; for protozoa, morphological identification and single-cell genome methods are used to study their species composition;

[0022] 2. The online real-time monitoring function of the present invention can reflect the safety status of the equipment, the environmental conditions of the hydrothermal cold spring area, etc., which can greatly improve work efficiency and reduce operational risks; the present invention has a compact structure, strong pressure resistance, simple operation, high positioning accuracy, and can quickly and effectively obtain geological, hydrological, chemical and biological information of the hydrothermal cold spring area to complete the in-situ monitoring task;

[0023] 3. The monitoring device of the present invention is recyclable, which effectively protects the marine environment. By setting a manual releaser and a releaser dual release device, the bottom counterweight cannot be released due to the releaser not working properly, thereby avoiding the problem that the monitoring device cannot be recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is a schematic diagram of the present invention;

[0026] Figure 2 It is the front view of the present invention;

[0027] Figure 3 For the present invention Figure 2 Enlarged view of part A;

[0028] Figure 4 It is a schematic diagram of the connection between the monitoring device of the present invention and the coaxial cable or the optoelectronic composite optical cable;

[0029] Figure 5 It is a top view of the present invention.

[0030] In the figure, 1. main frame, 2. ADCP, 3. releaser, 4. camera system, 5. current meter, 6. float, 7. lighting system, 8. multi-channel Raman detection system, 9. external releaser, 10. bottom counterweight, 11. extension frame, 12. power supply system, 13. Raman probe, 14. control system, 15. lander-mounted optical terminal, 16. physical and chemical parameter sensor interface, 17. connecting rod, 18. pull pin, 19. spring seat, 20. lifting ring pin, 21. release plate, 22. connecting plate, 23. photoelectric conversion mechanism, 24. optical cable bearing head, 25. float. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figure 1-3As shown, this embodiment discloses a modular-reconfigurable long-term in-situ monitoring device, including a fixed component, a physical and chemical parameter sensor interface, a multi-channel Raman detection system, a camera system, a current recording system, a control system, a power supply system, a lighting system, a buoy and an optical communication system. The fixed component is used for fixed assembly of the system and connection with the ship-borne coaxial cable; the physical and chemical parameter sensor interface is used for plugging and installing various physical and chemical parameter sensors, and the physical and chemical parameter sensors are used for real-time acquisition of temperature, salinity, depth, dissolved oxygen and methane concentration in hydrothermal and cold spring areas; the multi-channel Raman detection The measurement system is used to synchronously and in real time acquire the Raman spectral fingerprint characteristics of the components of the seafloor hydrothermal and cold spring fluids at multiple points; the camera system is used to synchronously record the characteristics of the fluid eruptions and changes in the biological communities in the seafloor hydrothermal and cold spring areas; the ocean current recording system is used to acquire the real-time changes in the single-point and profile flow rates of the near-bottom flow of the hydrothermal and cold spring vents; the control system is used to set and store the working parameters of the various items on board the lander; the power supply system is used to supply power to the entire lander system; the optical communication system is used to control and correct the system during operation, as well as to collect and transmit real-time data.

[0033] The fixed component includes a main frame 1 and an extension frame 11. The main frame 1 is divided into three layers. A floating body 6 is arranged on the first layer of the main frame 1. A physical and chemical parameter sensor interface 16, a camera system 4, a current recording system and a lighting system 7 are all installed on the first layer of the main frame 1. A control system 14 is installed on the second layer of the main frame 1. An optical communication system is installed on the top of the second layer of the main frame 1. A multi-channel Raman detection system 8 and a power supply system 12 are installed on the third layer of the main frame. An extension frame 11 is arranged on the side of the third layer of the main frame 1 for installing a Raman probe 13. A releaser 3 is arranged in the middle position at the top of the main frame 1. A connecting hook for connecting with a scientific research vessel is installed on the main frame 1 corresponding to the releaser 3. The releasing end of the releaser 3 is connected to one end of a connecting rod 17 passing through the main frame 1, and the other end of the connecting rod 17 is connected to the bottom counterweight 10 through a manual releaser.

[0034] In this embodiment, the manual release includes a pull pin 18, a spring, and a connecting plate 22. A release plate 21 is provided at one end of the connecting rod 17 close to the manual release. A through hole is provided on the connecting plate 22 for the pull pin 18 to pass through. The release plate 21 and the connecting plate 22 are fixed by the pull pin 18. A spring is sleeved on the pull pin 18, and a spring seat 19 is provided on the connecting plate 22 corresponding to the spring. When the pull pin 18 is inserted into the through hole, the spring on the pull pin 18 is in a compressed state, pressing and fixing the connecting plate 22 and the release plate.

[0035] In this embodiment, the specific structure of the connection between the monitoring device and the scientific research vessel is as follows: Figure 4As shown, the connecting hook is connected to one end of the external releaser 9, and the other end of the external releaser 9 is connected to one end of the optical cable bearing head 24 through the photoelectric conversion mechanism 23. The other end of the optical cable bearing head 24 is connected to a float 25, and the top of the float is connected to the optoelectronic composite cable or coaxial cable of the scientific research vessel through a steel cable.

[0036] In this embodiment, in order to facilitate lifting the monitoring device, a lifting ring pin 20 is provided on the side of the bottom counterweight 10 .

[0037] In this embodiment, the ocean current recording system includes an ocean current meter 5 and ADCP 2. The ocean current meter 5 is located on the side of the first layer of the main frame 1. ADCP 2 is installed on the side of the first layer of the main frame through a mounting frame. The optical communication system includes a lander-mounted optical terminal 15 and a handheld optical terminal. The lander-mounted optical terminal 15 is located on the top of the second layer of the main frame.

[0038] The monitoring method using the above modular-reconfigurable long-term in-situ monitoring device comprises the following steps:

[0039] Step 1: Using the geophysical equipment carried by the research vessel and combining the existing geological data, conduct a survey and analysis of the topography and stratigraphic structure of the proposed survey area, preliminarily determine the seabed type, sediment distribution characteristics and thickness, analyze the operation risks, and finally observe in detail through a handheld optical terminal to target the equipment launch operation position;

[0040] Step 2: Test the lander monitoring device on the research vessel deck, connect it to the shipboard coaxial cable or optoelectronic composite optical cable, and test the power supply and communication performance;

[0041] Step 3: Use a winch to lift the monitoring device and lower it into the seawater. After the device is stable, lower it to the seabed at a uniform speed. During the lowering process, use an optical communication system to perform real-time analysis on the physical state and communication state of the monitoring device to determine the operating conditions.

[0042] Step 4: After reaching the designated monitoring position, the external releaser is released, the monitoring device is seated, and the control system is used to set the acquisition parameters of the detection device, set the observation area of ​​the camera system, set the sampling interval of the sensor and the camera system, and the working time startup interval;

[0043] Step 5: After the monitoring work is completed, the releaser releases the counterweight, and the monitoring device floats up by itself for recovery. After being recovered to the research vessel, the data is exported and converted to complete the in-situ monitoring of the hydrothermal and cold spring areas.

[0044] In step 5, the releaser 3 is an acoustic releaser. When the monitoring device needs to be recovered, the connecting rod can be released through the releaser 3, and the connecting rod is connected to the base counterweight to achieve the release of the base counterweight. When the releaser 3 cannot work normally, the connecting rod cannot be released. At this time, the pull pin can be pulled by an underwater manipulator or an underwater robot. After the pull pin is pulled out, the spring returns to its original length, and the clamping force on the release plate and the connecting plate is lost. The release plate is separated from the connecting plate, and the connecting plate is connected to the base counterweight to achieve the release of the base counterweight.

[0045] The monitoring method of the above-mentioned modular-reconfigurable long-term in-situ monitoring device, the control system includes an online mode and an offline mode. When connected to the coaxial cable or optoelectronic composite optical cable of the scientific research vessel, it is in the online mode, at which time the working time and interval of each unit of the monitoring device can be set; when disconnected from the coaxial cable or optoelectronic composite optical cable of the scientific research vessel, it is in the offline mode, at which time the monitoring device starts to work offline according to the working parameters set in the online mode;

[0046] In offline mode, the control system can access the monitoring device within the working window set in online mode, and has the same setting functions as online mode. When the control system ends the access, the monitoring device enters offline mode.

[0047] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A modular-reconfigurable long-term in-situ monitoring device, Features: It includes a fixed component, on which a physical and chemical parameter sensor interface, a multi-channel Raman detection system, a camera system, an ocean current recording system, a control system, a power supply system, a lighting system, a floating body and an optical communication system are arranged, and a releaser is arranged at the middle position of the top of the fixed component, and the release end of the releaser is connected to one end of a connecting rod passing through the fixed component, and the other end of the connecting rod is connected to the bottom counterweight through a manual releaser; A connecting hook for connecting with a scientific research vessel is provided at the middle position of the top of the fixing assembly; The connecting hook is connected to one end of the external releaser, the other end of the external releaser is connected to one end of the optical cable bearing head through a photoelectric conversion mechanism, and the other end of the optical cable bearing head is connected to the photoelectric composite optical cable or coaxial cable of the scientific research vessel; The manual release comprises a pull pin, a spring and a connecting plate. A release plate is provided at one end of the connecting rod close to the manual release. A through hole is provided on the connecting plate for the pull pin to pass through. The release plate and the connecting plate are fixed by the pull pin. A spring is sleeved on the pull pin. A lifting ring pin is arranged on the side surface of the bottom counterweight.

2. A modular-reconfigurable long-term in-situ monitoring device according to claim 1, It is characterized in that The fixed component includes a main frame and an extension frame. The main frame is divided into three layers. A floating body is arranged on the first layer of the main frame. The physical and chemical parameter sensor interface, the camera system, the current recording system and the lighting system are all installed on the first layer of the main frame. A control system is installed on the second layer of the main frame. An optical communication system is installed on the top of the second layer of the main frame. A multi-channel Raman detection system and a power supply system are installed on the third layer of the main frame. An extension frame is arranged on the side of the third layer of the main frame for installing a Raman probe.

3. A modular-reconfigurable long-term in-situ monitoring device according to claim 2, It is characterized in that The ocean current recording system includes an ocean current meter and an ADCP. The ocean current meter is located on the side of the first layer of the main frame. The ADCP is installed on the side of the first layer of the main frame through a mounting frame. The optical communication system includes an optical transmission end carried by the lander and a handheld optical transmission end. The optical transmission end carried by the lander is located on the top of the second layer of the main frame.

4. A monitoring method based on the modular-reconfigurable long-term in-situ monitoring device according to any one of claims 1 to 3, It is characterized in that The steps include: Step 1: Using the geophysical equipment carried by the research vessel and combining the existing geological data, conduct a survey and analysis of the topography and stratigraphic structure of the proposed survey area, preliminarily determine the seabed type, sediment distribution characteristics and thickness, analyze the operation risks, and finally observe in detail through a handheld optical terminal to target the equipment launch operation position; Step 2: Test the lander monitoring device on the research vessel deck, connect it to the shipboard coaxial cable or optoelectronic composite optical cable, and test the power supply and communication performance; Step 3: Use a winch to lift the monitoring device and lower it into the seawater. After the device is stable, lower it to the seabed at a uniform speed. During the lowering process, use an optical communication system to perform real-time analysis on the physical state and communication state of the monitoring device to determine the operating conditions. Step 4: After reaching the designated monitoring position, the external releaser is released, the monitoring device is seated, and the control system is used to set the acquisition parameters of the detection device, set the observation area of ​​the camera system, set the sampling interval of the sensor and the camera system, and the working time startup interval; Step 5: After the monitoring work is completed, the releaser releases the counterweight, and the monitoring device floats up by itself for recovery. After being recovered to the research vessel, the data is exported and converted to complete the in-situ monitoring of the hydrothermal and cold spring areas.

5. The monitoring method of the modular-reconfigurable long-term in-situ monitoring device according to claim 4, It is characterized in that The control system includes an online mode and an offline mode. When connected to the coaxial cable or optoelectronic composite cable of the scientific research vessel, it is in the online mode, at which time the working time and interval of each unit of the monitoring device can be set. When disconnected from the coaxial cable or optoelectronic composite cable of the scientific research vessel, it is in the offline mode, at which time the monitoring device starts to work offline according to the working parameters set in the online mode; In offline mode, the control system can access the monitoring device within the working window set in online mode, and has the same setting functions as online mode. When the control system ends the access, the monitoring device enters offline mode.

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