A long-term observation device for deep-sea bottom organisms

Abstract

The present invention belongs to the field of marine scientific research and environmental protection technology. The present invention provides a long-term observation device for deep-sea bottom organisms, which includes a mounting frame, an observation tube, a suction pump, a control cabin, an energy storage component, a camera component, and a light-emitting component. The mounting frame is provided with a hanging connection position, and is compatible with the submersible manipulator; the open side of the observation tube is provided with an outlet of the suction pump and a camera component and a light-emitting component; the energy storage component is provided with a control switch, and is compatible with the submersible manipulator. The present invention has a simple structure and low cost. Through the adapted hanging connection position, precise underwater delivery and recovery by the submersible can be achieved. Combined with the control switch, at least some functions of the underwater start-stop device of the submersible manipulator can be achieved. The operator can independently select the switch according to the task requirements, making its deployment more flexible; it can achieve in-situ continuous and clear recording of the stress response of benthic organisms, thereby providing effective support for the environmental impact assessment of deep-sea mining.

Description

Technical Field

[0001] The present invention belongs to the technical field of marine science research and environmental protection, and in particular relates to a long-term observation device for deep-sea bottom organisms. Background Art

[0002] The development of deep-sea mineral resources is a large and extremely complex systematic project, involving detailed resource exploration, on-site collection, mineral pretreatment and other processes of environmental protection and restoration. The development process is subject to strict environmental protection requirements and complex marine environment constraints.

[0003] Among them, during the exploration and development of deep-sea mineral resources, due to the influence of the movement of mining vehicles or the suction of the system, the plumes formed carry a large amount of sediments, which may bring catastrophic disturbances to the deep-sea environment, directly destroy the habitats of benthic animals on the seabed, and it will be difficult to reach a new balance for a long time.

[0004] Therefore, conducting surveys and research on deep-sea mining area ecosystems, mastering seabed environmental baseline survey data, and understanding the functions, resilience, connectivity of benthic organisms, and the laws of community reconstruction of deep-sea ecosystems are important guarantees for ensuring that future deep-sea mining is green, environmentally friendly, safe, reliable, intelligent, and efficient.

[0005] At present, the main technical means for long-term observation of deep-sea organisms are as follows:

[0006] 1. After trapping seafloor organisms, they are brought to a land-based laboratory under pressure to observe the impact of simulated plume sediments. Although this is easy to implement, it is difficult to ensure the accuracy of the experiment because the organisms are separated from their original environment, and it is difficult to obtain the best observation data and conclusions.

[0007] 2. Establishing a large-scale in-situ experiment and observation system on the seabed. Although existing technologies can realize automated experiments and provide information feedback through cables or underwater acoustic communication, their construction and maintenance costs are extremely high and are not suitable for long-term observation and research. In the event of an accident, the loss cost is also extremely high, and deployment and recovery are difficult.

[0008] 3. Use a miniature observation system based on a lander. This technology traps seabed organisms while conducting video observation to understand the habits of benthic organisms. This type of design is currently quite feasible, has low overall cost, and is easy to set up long-term. However, because the lander is deployed by a survey vessel, the observation system cannot be accurately placed on the seabed, and the timing of video observation cannot be accurately controlled. The recovery process is exposed to the impact of loss and impact caused by severe sea conditions, which affects the scientific reliability of the survey results.

[0009] In summary, existing seabed biological survey technologies are unable to accurately assess the sediment plume disturbance caused by deep-sea mining, and are unable to observe clearly and continuously on-site in real time the stress response of benthic organisms to external stimuli caused by deep-sea mining, which in turn limits scientists' understanding of the environmental impact assessment of deep-sea mining. Summary of the Invention

[0010] In view of the problems existing in the prior art, the present invention provides a long-term observation device for deep-sea bottom organisms which has a simple structure, low cost, and can be conveniently and accurately deployed and recovered with a submersible.

[0011] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0012] The present invention provides a long-term observation device for deep-sea bottom organisms, which mainly includes a mounting frame, an observation tube, a suction pump, a control cabin, an energy storage component, a camera component, and a light-emitting component; the observation tube, the suction pump, the control cabin, the energy storage component, the camera component, and the light-emitting component are all mounted on the mounting frame;

[0013] The top or side of the mounting frame is provided with a hanging connection position, and the hanging connection position is adapted to the submersible manipulator;

[0014] The observation tube is a transparent cylinder with an open top, and the outlet of the suction pump is provided on the open side; the camera assembly and the light emitting assembly are also provided on the open side of the observation tube;

[0015] The energy storage assembly is provided with a control switch, and the control switch is adapted to the submersible manipulator;

[0016] The control cabin is provided with a carrier board, a processor, a storage medium, and an integrated control system; the control cabin is respectively connected to the suction pump, the energy storage component, the camera component, and the light emitting component.

[0017] Furthermore, the control switch is a mechanical rotary switch, comprising a handle, a rotating shaft, and an electrode switch;

[0018] The handle is connected to the electrode switch via the rotating shaft; the electrode switch is connected to the energy storage unit of the energy storage assembly and is used to control the on and off of at least part of the power supply circuit.

[0019] Furthermore, the control switch further comprises a mounting flange, and the mounting flange is fixedly connected to the mounting frame;

[0020] The rotating shaft includes a first rotating shaft and a second rotating shaft; the first rotating shaft is coaxially connected to the second rotating shaft, and the first rotating shaft is rotatably connected to the mounting flange;

[0021] The handle is a vertical annular structure, and the lower part is fixedly connected to the first rotating shaft through a fixing member; the second rotating shaft is connected to the electrode switch.

[0022] Furthermore, the mounting flange is further provided with a connecting sleeve;

[0023] Two coaxially opposed water-lubricated bearings are provided in the connecting sleeve;

[0024] A positioning shoulder is provided on the first rotating shaft, and the positioning shoulder is clamped between the two water-lubricated bearings;

[0025] The connecting shaft sleeve is also provided with a water-permeable hole.

[0026] Furthermore, a marking area is provided on the first rotating shaft, and at least one marking area is aligned with the water permeable hole after the handle is rotated to the working position.

[0027] Furthermore, the control switch further includes a low-frequency sound generator;

[0028] The low-frequency sound generator includes a first sound-generating part, a second sound-generating part and a gear plate;

[0029] The first sound-emitting part and the second sound-emitting part are respectively located at the extreme rotation positions of the handle and are fixedly connected to the mounting frame; the first and second sound-emitting parts are both sector ring segments of a crown gear, and the tooth shapes of the first and second sound-emitting parts are different;

[0030] The gear shift plate is also a sector ring segment of the crown gear and is connected to the handle through an elastic member;

[0031] The tooth height directions of the first and second sound-producing parts are opposite to the tooth height direction of the gear shifting plate;

[0032] The tooth root distance between the first sound-producing part and the gear shifting plate is smaller than the sum of the tooth heights of the first sound-producing part and the gear shifting plate;

[0033] The tooth root distance between the second sound-emitting part and the gear shifting plate is smaller than the sum of the tooth heights of the second sound-emitting part and the gear shifting plate.

[0034] Furthermore, the observation device also includes an underwater compensator;

[0035] The underwater compensator is an oil compensator used for pressure compensation;

[0036] The underwater compensator is connected to at least the energy storage component and the suction pump.

[0037] Furthermore, the lower portion of the observation tube is also an open structure, and a screen is installed inside.

[0038] Furthermore, the inlet of the suction pump is connected to a flexible connecting pipe.

[0039] Furthermore, the hanging connection position is a vertical ring handle;

[0040] The annular handle is fixedly mounted on the middle portion of the top surface of the mounting frame;

[0041] Hanging rings are also provided at the corners of the top surface of the installation frame.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The present invention has a simple structure and low cost. Through the adapted lifting connection position, it can realize precise underwater deployment and recovery by the submersible. Combined with the control switch, it realizes at least part of the functions of the underwater start-stop device of the submersible manipulator. Unlike the high cost problem of underwater acoustic communication or the non-adjustable problem of the timing switch, the operator can independently select the switch according to the task requirements, making its deployment more flexible; furthermore, combined with the energy storage, camera and light-emitting components, it can carry out long-term in-situ observation of seabed organisms in the observation tube, and cooperate with the suction pump to suck the sediment to simulate the sediment plume disturbance caused by deep-sea mining, so as to realize real-time, continuous and clear on-site stress response records of benthic organisms after external stimuli, thereby providing effective support for scientists to assess the environmental impact of deep-sea mining. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 A front perspective view of the device in a specific embodiment of the present invention;

[0046] Figure 2 A perspective view of the rear side of the device in a specific embodiment of the present invention;

[0047] Figure 3 This is a three-dimensional diagram of an observation tube in a specific embodiment of the present invention;

[0048] Figure 4 This is a three-dimensional diagram of the installation position of the suction pump in a specific embodiment of the present invention;

[0049] Figure 5 A cross-sectional view of a suction pump in a specific embodiment of the present invention;

[0050] Figure 6 A three-dimensional diagram of an energy storage component in a specific embodiment of the present invention;

[0051] Figure 7 A cross-sectional view of an energy storage component in a specific embodiment of the present invention;

[0052] Figure 8 It is a stereoscopic diagram of a low-frequency sound generator in a specific embodiment of the present invention.

[0053] In the figure: 1. Mounting frame, 2. Observation tube, 3. Suction pump, 4. Light emitting component, 5. Camera component, 6. Control cabin, 7. Energy storage component, 8. Underwater compensator, 101. Lifting ring, 102. Ring handle, 201. Cylinder body, 202. Observation tube connecting flange, 203. Screen, 301. Inlet, 302. Outlet, 303. Front cover, 304. Pump casing, 305. Rear cover, 306. Suction pump waterproof plug, 307. First compensator interface, 308. Impeller shaft, 309. Pump head, 310. Motor output shaft, 311. Second O-ring, 312. First O-ring, 313. Oil seal, 314. Lip seal, 315. Sealing cover, 316, bearing, 317, retaining ring, 318, DC motor, 319, third O-ring, 701, square pressure-resistant casing, 702, handle, 703, pressure-resistant lithium battery, 704, first rotating shaft, 705, shaft sleeve end cover, 706, connecting shaft sleeve, 707, water permeable hole, 708, water-lubricated bearing, 709, second rotating shaft, 710, rotating shaft mounting seat, 711, fourth O-ring, 712, electrode switch, 713, power waterproof plug, 714, second compensator interface, 715, mounting flange, 716, first sound-emitting part, 717, second sound-emitting part, 718, gear plate, 719, composite rubber layer, 720, pin. DETAILED DESCRIPTION

[0054] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0055] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0056] In the description of the present invention, it is to be understood that the relative relationships indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the upper and lower relationships corresponding to the device when it is installed in an actual application. They are for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, and therefore cannot be understood as limiting the present invention.

[0057] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted" and "connected" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0058] It should be noted that the methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.

[0059] This embodiment provides a long-term observation device for deep-sea bottom organisms, such as Figure 1 and Figure 2 As shown, it mainly includes a mounting frame 1, an observation tube 2, a suction pump 3, a control cabin 6, an energy storage component 7, a camera component 5 and a light-emitting component 4.

[0060] The mounting frame 1 is a square frame structure constructed from welded circular tubes. It primarily supports various components and assemblies, provides mounting locations for them, and provides a degree of protection. Since the observation device in this embodiment is deployed from a submersible, the overall dimensions of the mounting frame 1 are compatible with the submersible's sampling basket, and its perimeter is free of protruding components. The main components of the observation tube 2, suction pump 3, control cabin 6, energy storage assembly 7, camera assembly 5, and light-emitting assembly 4 are all mounted on the mounting frame and located on its inner side. Furthermore, to facilitate placement and handling by the submersible's manipulator, a lifting connection is provided in the middle of the top crossbeam of the mounting frame 1. This connection is compatible with the submersible's manipulator. In this embodiment, using a common retractable manipulator as an example, the lifting connection is designed as a vertical ring-shaped handle 102. A flange is also provided on the inner ring of the ring-shaped handle to facilitate support of the manipulator and prevent swaying and collisions caused by currents near the sea surface. Lifting rings 101 are also provided at the top corners of the mounting frame 1 for lifting after leaving the water.

[0061] like Figure 3As shown, the observation tube 2 is a transparent cylinder with an open top. The lower portion of the tube body 201 is provided with an observation tube connection flange 202, which is bolted to the mounting frame 1. To effectively simulate the effects of sediment turbulence and prevent trapped seabed organisms from escaping from the bottom, the lower portion of the observation tube 2 is also designed to be open, with a screen 203 located in the middle of the inner side.

[0062] A camera assembly 5 and a light-emitting assembly 4 are mounted above the upper opening of the observation tube 2, with the lens and light source respectively oriented toward the open area to provide a clear view of the tube interior. Optionally, the camera assembly 5 may include a pressure-resistant housing and a waterproof plug, with the base of the camera assembly 5 fixedly connected to a side crossbeam of the mounting frame 1. The camera of the camera assembly 5 may include a night vision camera, and the light-emitting assembly 4 may include an invisible light emitting unit. This allows for capturing underwater life in infrared or low-light conditions, avoiding light stress reactions in some photosensitive organisms. Similarly, the base of the light-emitting assembly 4 may also be fixedly connected to a side crossbeam of the mounting frame 1.

[0063] A suction pump 3 is also installed above the upper opening of the observation tube 2. Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the suction pump 3 is fixedly connected to the top crossbeam of the mounting frame 1 by a metal clamp. An inlet 301 and an outlet 302 are provided at the front end of the suction pump 3, and the outlet 302 faces the inside of the observation tube 2. The pump body is a three-section pressure-resistant shell design, including a front cover 303, a pump shell 304 and a rear cover 305. Among them, a pump head 309 is installed on the front cover 303, and a hole is opened in the middle of the front cover 303 to pass the impeller shaft 308. A bearing 316 is fixed to the shaft hole of the front cover 303 by a retaining ring 317, and a first O-ring 312, an oil seal 313, a lip seal 314, and a sealing cover 315 are installed behind the bearing in sequence. The pump shell 304 is a cylindrical structure that passes through from front to back, and a DC motor 318 is installed inside. The motor is fixed to the flange inside the pump shell 304 by bolts, and the motor output shaft 310 is coaxially fixed to the impeller shaft 308. A second O-ring 311 is installed between the front cover 303 and the pump housing 304. The rear cover 305 is provided with a suction pump waterproof plug 306 and a first compensator interface 307. A third O-ring 319 is installed between the rear cover 305 and the pump housing 304 to ensure overall sealing performance.

[0064] Furthermore, in order to quickly extract the sediment and blow it into the observation tube 2, an extended flexible connecting tube (not shown in the figure) is designed to be installed at the inlet 301. After the device is deployed, personnel can operate the submersible manipulator to clamp the end of the flexible connecting tube and move it to the vicinity of the sediment layer, thereby sucking up the sediment and pumping it into the observation tube 2.

[0065] The control cabin 6 houses a data acquisition card, an integrated circuit board, a processor, and storage media, integrating the entire device's control system into the hardware system. The control cabin 6 is connected to the suction pump 3, energy storage assembly 7, camera assembly 5, and light-emitting assembly 4 via multi-way waterproof plugs and cables. It controls the operation of each component / unit, monitors operating status, and collects and records camera data. The control cabin 6 also has a pressure-resistant cylindrical outer shell and is secured to the bottom of the mounting frame 1 by two metal clamps.

[0066] The observation device of this embodiment further includes an underwater compensator 8, which is an oil compensator for pressure compensation. The underwater compensator 8 is connected to the energy storage assembly 7 and the first compensator interface 307 of the suction pump 3 through a pressure-resistant hose.

[0067] Combine Figure 6 and Figure 7 As shown, the energy storage assembly 7 of this embodiment is housed in a rectangular pressure-resistant housing 701, specifically composed of a bimetallic plate and a central frame. A pressure-resistant lithium battery 703 is installed within the rectangular pressure-resistant housing 701. The energy storage assembly 7 is equipped with a control switch, which is compatible with the submersible manipulator. Furthermore, the control switch of this embodiment is a mechanical rotary switch, comprising a handle 702, a rotating shaft, and an electrode switch 712.

[0068] To accommodate the submersible manipulator of this embodiment, handle 702 is also a vertical, annular structure with a flange on the top to facilitate gripping by the manipulator. Rotation of the wrist joint drives handle 702. Handle 702 is connected to electrode switch 712 via a rotating shaft, which in turn is connected to a pressure-resistant lithium battery 703, controlling the on / off of at least a portion of the power supply circuit. While timers can be used to trigger circuits in the prior art, these timers are quite limited and often result in overly urgent missions. After completing a set of device launches, it is necessary to rush to the next designated location as soon as possible. Otherwise, a timeout could cause the device to automatically activate during the launch. Furthermore, after completing the mission, waiting for the device to activate is not possible to avoid wasting time. Consequently, the device's operating status can only be checked when the device is retrieved, hindering emergency response. Another common approach is to add an underwater acoustic communication device to remotely control the device's start and stop. However, this increases overall cost, and the fidelity of underwater acoustic communication is insufficient, making it particularly prone to unexpected situations. The present embodiment starts and stops by rotating the control device with a separate handle, and no longer requires a timer trigger or an additional underwater acoustic communication trigger. This not only fully utilizes the manipulator required for submersible deployment, but also avoids the above problems and increases the flexibility and certainty of the task.

[0069] Optionally, the control switch of this embodiment further includes a mounting flange 715, which is fixedly connected to the crossbeam of the mounting frame 1 via bolts. A connecting sleeve 706 is fixed to the mounting flange 715 for connecting to the rotating shaft.

[0070] This embodiment takes into account sealing and connection strength requirements. The shaft is designed to include a first shaft 704 and a second shaft 709. The first shaft 704 and the second shaft 709 are coaxially connected, and the first shaft 704 is rotatably connected to a connecting sleeve 706. The upper end of the first shaft 704 is fixedly connected to the handle 702 via a set screw, and a locating shoulder is provided in the middle of the first shaft 704. The connecting sleeve 706, via a sleeve end cap 705, houses two opposed water-lubricated bearings 708, one above and one below. The locating shoulder engages between the two water-lubricated bearings 708, thereby achieving axial positioning of the first shaft 704 and maintaining its rotational capability. There are multiple water-permeable holes 707 on the connecting sleeve 706, which are long waist-shaped through holes. On the one hand, water can pass through to provide lubricating fluid for the water-lubricated bearing 708; on the other hand, a marking area (such as a color mark) can be provided on the first rotating shaft 704, and at least one marking area is fully or partially aligned with the water-permeable hole 707 after the handle 702 is rotated to the working position (the marking area is larger than the outline of the water-permeable hole). In this way, the operator in the submersible can visually observe whether the handle 702 is rotated to the extreme position (corresponding to the open and closed gears) through the underwater camera.

[0071] The second shaft 709 is mounted on the top of the square pressure-resistant housing 701 via a shaft mounting seat 710, and the lower end of the shaft is connected to an electrode switch 712. A fourth O-ring 711 is further installed between the second shaft 709 and the shaft mounting seat 710.

[0072] The square pressure-resistant housing 701 is also provided with a power waterproof plug 713 and a second compensator interface 714 , and the second compensator interface 714 is used to connect to the underwater compensator 8 .

[0073] Optional, combined Figure 8 As shown, the control switch of this embodiment further includes a low-frequency sound generator, which is installed between the handle 702 and the connecting sleeve 706 and mainly includes a first sound-generating part 716 , a second sound-generating part 717 and a gear plate 718 .

[0074] Among them, the first sound-emitting part 716 and the second sound-emitting part 717 are both installed on the upper end surface of the connecting sleeve 706 and are arranged around the axis, and the two sound-emitting parts are respectively located at the extreme positions of the handle rotation (in this embodiment, the handle 702 rotates the switch 180° as an example, 0°-80° is off, and 100°-180° is on).

[0075] Both the first and second sound-generating sections are segments of the crown gear (a 30° arc), and the tooth profiles of the first and second sound-generating sections are different: the tooth profile of the first sound-generating section 716 is triangular, while the tooth profile of the second sound-generating section 717 is arc-shaped. This creates distinct audio frequencies when the toothed disc 718 rubs against each other, making it easier for the operator to distinguish between them.

[0076] The shifter disc 718 is also a ring segment (30° arc area) of the crown gear and is connected to the handle 702 via an elastic member. Specifically, the shifter disc 718 is mounted upside down, meaning the tooth heights of the first and second sounding sections are oriented in the opposite direction of the tooth height of the shifter disc 718. The back of the shifter disc 718 is affixed with a composite rubber layer 719, which is suitable for operation in the high-pressure environment of deep-sea transmission pipelines. Four pins 720 are installed on the back of the shifter disc 716, and corresponding mounting holes are machined on the bottom surface of the handle 702. The pins are inserted into the mounting holes. The distance between the handle 702 and the connecting sleeve 706 is adjusted so that the root spacing between the first sounding section 716 and the shifter disc 718 is less than the sum of the tooth heights of the first sounding section 716 and the shifter disc 718, and the root spacing between the second sounding section 717 and the shifter disc 718 is less than the sum of the tooth heights of the second sounding section and the shifter disc.

[0077] The purpose of this design is that when the operator controls the manipulator to rotate the handle 702, when it has entered the open or closed area and is close to the extreme position, the gear plate 718 will rub against the first or second sound-emitting part to produce sound, and because the tooth profile shapes are different, the sound is also different. The operator can judge the switch state by hearing the corresponding low-frequency sound through the underwater acoustic receiver of the submersible, thereby avoiding the problem of over-rotation; combined with the aforementioned water-permeable hole visual judgment mark, the switch state can be effectively and accurately known; at the same time, a 30° friction sound-emitting area is set in the 80° switch area, which can avoid the problem of switch virtual connection, and also has a damping function to ensure that the switch will not be changed by external disturbances or collisions.

[0078] The workflow of the deep-sea bottom biological long-term observation device is as follows:

[0079] (1) Before diving, set the working time of the deep-sea sediment suction pump according to the planned operating depth;

[0080] (2) Install the device on the sampling basket of a manned submersible;

[0081] (3) The diver starts and controls the system through the host computer operating software in the cabin, and then proceeds to dive after confirming that everything is correct;

[0082] (4) After arriving at the operation site and finding the organisms to be captured based on on-site observations on the seabed, the submersible uses the manipulator to place the device on the seabed. During installation, be sure to place the observation tube above the benthic organisms to be observed.

[0083] (5) The manipulator operates the control switch and rotates the wrist joint to turn on the power to provide power to the sediment suction pump, and the sediment suction pump starts working;

[0084] (6) The manipulator operates the inlet hose and aligns it with the sediment to suck the sediment to ensure that mud enters the suction pump;

[0085] (7) Turn on the camera assembly and the light-emitting assembly (LED light) to simultaneously observe the coverage of the sediments in the transparent cylinder on the benthic organisms and the stress response of the benthic organisms;

[0086] (8) After 30 minutes of operation, the control system automatically cuts off the power to the control switch; the camera component and the light-emitting component remain powered on;

[0087] (9) The submersible leaves the site and the device remains on the seabed for 24-48 hours;

[0088] (10) After completing the 24-48 hours of photo and video shooting, the submersible returns to the original deployment coordinate point during the next dive and recovers the device into the sampling basket, completing the operation.

[0089] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A long-term observation device for deep-sea bottom organisms, characterized by: It includes a mounting frame, an observation tube, a suction pump, a control cabin, an energy storage component, a camera component and a light emitting component; the observation tube, the suction pump, the control cabin, the energy storage component, the camera component and the light emitting component are all mounted on the mounting frame; A hanging connection position is provided on the top or side of the installation frame, and the hanging connection position is adapted to the submersible manipulator; The observation tube is a transparent cylinder with an open top, and the open side is provided with an outlet of a suction pump; the open side of the observation tube is also provided with a camera assembly and a light emitting assembly; The energy storage component is provided with a control switch, which is adapted to the submersible manipulator; The control cabin is equipped with a carrier board, processor, storage medium, and an integrated control system; the control cabin is connected to the suction pump, energy storage component, camera component, and light-emitting component respectively; The control switch is a mechanical rotary switch, including a handle, a rotating shaft, and an electrode switch; The handle is connected to the electrode switch via a rotating shaft; the electrode switch is connected to the energy storage unit of the energy storage assembly, and is used to control the on and off of at least part of the power supply circuit; The control switch also includes a low-frequency sounder; The low-frequency sound generator includes a first sound generating part, a second sound generating part and a gear plate; The first sound-emitting part and the second sound-emitting part are respectively located at the extreme rotation positions of the handle and are fixedly connected to the mounting frame; the first and second sound-emitting parts are both sector ring segments of the crown gear, and the tooth shapes of the first and second sound-emitting parts are different; The gear shift plate is also a sector ring segment of the crown gear and is connected to the handle through an elastic member; The tooth height direction of the first and second sounding parts is opposite to the tooth height direction of the gear shift plate; The distance between the tooth roots of the first sounding part and the tooth shifting plate is smaller than the sum of the tooth heights of the first sounding part and the tooth shifting plate; The tooth root distance between the second sounding part and the gear shifting plate is smaller than the sum of the tooth heights of the second sounding part and the gear shifting plate.

2. The long-term observation device for deep-sea bottom organisms according to claim 1, characterized in that: The control switch also includes a mounting flange, which is fixedly connected to the mounting frame; The rotating shaft includes a first rotating shaft and a second rotating shaft; the first rotating shaft is coaxially connected to the second rotating shaft, and the first rotating shaft is rotatably connected to the mounting flange; The handle is a vertical ring structure, and the lower part is fixedly connected to the first rotating shaft through a fixing piece; the second rotating shaft is connected to the electrode switch.

3. The long-term observation device for deep-sea bottom organisms according to claim 2, characterized in that: The mounting flange is also provided with a connecting sleeve; Two coaxially opposed water-lubricated bearings are provided in the connecting sleeve; A positioning shoulder is provided on the first rotating shaft, and the positioning shoulder is clamped between two water-lubricated bearings; The connecting shaft sleeve is also provided with a water-permeable hole.

4. The long-term observation device for deep-sea bottom organisms according to claim 3, characterized in that: A marking area is provided on the first rotating shaft, and at least one marking area is aligned with the water permeable hole after the handle is rotated to the working position.

5. The long-term observation device for deep-sea bottom organisms according to claim 1, characterized in that: The observation device also includes an underwater compensator; The underwater compensator is an oil compensator used for pressure compensation; The underwater compensator is connected to at least the energy storage component and the suction pump.

6. The long-term observation device for deep-sea bottom organisms according to claim 1, characterized in that: The lower part of the observation tube is also an open structure, and a screen is installed inside.

7. The long-term observation device for deep-sea bottom organisms according to claim 1, characterized in that: The inlet of the suction pump is connected with a flexible connecting pipe.

8. The long-term observation device for deep-sea bottom organisms according to claim 1, characterized in that: The hanging connection position is a vertical ring handle; The ring handle is fixedly mounted on the middle of the top surface of the mounting frame; There are also lifting rings at the corners of the top surface of the installation frame.

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