Marine ranch digital monitoring system based on buoy platform

Abstract

According to the marine ranch digital monitoring system based on the buoy platform, the problems that an existing marine ranch monitoring buoy is short in distance, small in monitoring visual angle and inconvenient to lay and recycle can be solved, the monitoring system is convenient to clean and maintain, and the service life of the whole system can be effectively prolonged. The monitoring system comprises a floating body, a supporting frame installed on the floating body, and a multi-stage telescopic rod, a monitoring unit, a power supply unit, an acquisition unit, a comprehensive control unit and a communication unit which are arranged on the supporting frame, the upper end of the multi-stage telescopic rod is connected with the support frame, the telescopic end is connected with the mounting bracket, and the monitoring unit is carried on the mounting bracket; the monitoring unit comprises a multi-beam imaging sonar, an underwater camera and a temperature-salinity-depth instrument; the underwater camera is provided with a light source in a matching manner; the comprehensive control unit communicates with the shore-based monitoring station through the communication unit and is electrically connected with the acquisition unit, the power supply unit and the multi-stage telescopic rod.

Description

Technical Field

[0001] The invention relates to a digital monitoring system, in particular to a digital monitoring system for marine ranches based on a buoy platform, and belongs to the technical field of marine monitoring. Background Art

[0002] The marine ranch (or fish resource) monitoring buoy is an electronic device specially designed to monitor fish resources in the ocean. It integrates multiple sensors and advanced data processing technology to monitor the distribution and quantity of fish in the ocean and the parameters of the marine environment in real time. These data are crucial for the management and protection of fishery resources.

[0003] The currently available fish resource monitoring buoys have problems such as short fish monitoring distance and narrow monitoring angle of view, and the monitoring system is difficult to recover after the entire buoy enters the water. Summary of the invention

[0004] In view of this, the present invention provides a digital marine ranch monitoring system based on a buoy platform, which can solve the problems of short distance, small monitoring angle, and inconvenient deployment and recovery of existing marine ranch monitoring buoys. The monitoring system is easy to clean and maintain, and can effectively increase the service life of the entire system.

[0005] The technical solution of the present invention is: a digital fish resource monitoring system based on a buoy platform, comprising: a floating body, a support frame installed on the floating body, a multi-stage telescopic rod arranged on the support frame, a monitoring unit, a power supply unit, a collection unit, a comprehensive control unit and a communication unit;

[0006] The fixed end of the multi-stage telescopic rod is connected to the support frame, and the telescopic end is connected to the mounting bracket, and the mounting bracket is equipped with a monitoring unit;

[0007] The monitoring unit comprises: a multi-beam imaging sonar for obtaining sonar images, an underwater camera for obtaining optical images, and a temperature-salinity-depth meter for obtaining temperature, salinity and depth information; the underwater camera is equipped with a light source;

[0008] The power supply unit is used to supply power to the electrical equipment in the entire system;

[0009] The acquisition unit is respectively connected to the multi-beam imaging sonar, underwater camera and temperature-salinity-depth meter in the monitoring unit, and is electrically connected to the integrated control unit through an optoelectronic composite cable;

[0010] The integrated control unit communicates with the shore-based monitoring station through the communication unit, and is electrically connected to the collection unit, the power supply unit and the multi-stage telescopic rod respectively.

[0011] As a preferred embodiment of the present invention: the mounting bracket is mounted on the telescopic end of the multi-stage telescopic rod via a pitch axis connected to a pitch motor, and the mounting bracket and the monitoring unit carried thereon can perform pitch motion under the drive of the pitch motor.

[0012] As a preferred embodiment of the present invention: it also includes a lifting and rotating unit, and the fixed end of the multi-stage telescopic rod is connected to the support frame through the lifting and rotating unit;

[0013] The lifting and rotating unit can drive the monitoring unit at the multi-stage telescopic rod and its telescopic end to lift and lower as a whole and rotate along its own axis to perform monitoring at different heights and different circumferential directions.

[0014] As a preferred embodiment of the present invention: the lifting and rotating unit comprises: a primary lifting motor, a fixed plate, a rack, a gear A, a rotating motor and a gear pair;

[0015] A rack is vertically arranged on the support frame, and a gear A matched with the rack is supported on the fixed plate through a bearing; the first-stage lifting motor is used to drive the gear A to rotate, thereby driving the fixed plate to move linearly along the rack;

[0016] The rotary mechanism composed of the rotary motor and the gear pair is arranged on a fixed plate; the power output end of the rotary motor is connected to a gear in the gear pair, and the other gear in the gear pair is coaxially connected to the fixed end of the multi-stage telescopic rod, so that the rotary motor drives the multi-stage telescopic rod to rotate as a whole through the gear pair.

[0017] As a preferred embodiment of the present invention: a secondary lifting mechanism composed of a secondary lifting motor and a trapezoidal screw is arranged on a fixed plate; the trapezoidal screw converts the rotational motion of the secondary lifting motor into a linear motion to drive the telescopic end of the multi-stage telescopic rod to extend and retract step by step.

[0018] As a preferred embodiment of the present invention, the fixing plate is slidably matched with a linear guide rail vertically arranged on the supporting frame to guide its lifting and lowering movement.

[0019] As a preferred embodiment of the present invention: an upper limit sensor and a lower limit sensor are respectively installed at the upper and lower ends of the rack to limit the upward and downward movement of the fixing plate.

[0020] As a preferred embodiment of the present invention: the photoelectric composite cable is arranged in a drag chain type wiring trough.

[0021] As a preferred embodiment of the present invention: a configuration block is provided on the floating body for balancing and lowering the center of gravity of the floating body.

[0022] As a preferred embodiment of the present invention: it also includes a storage unit, which is electrically connected to the acquisition unit and is used to store the images taken by the underwater camera.

[0023] Beneficial effects:

[0024] (1) The marine ranch monitoring system of the present invention has a simple structure, is easy to deploy and recover, and has a high reuse rate. When monitoring, the monitoring unit enters the water and adjusts the depth of the water according to the depth. When not monitoring, all equipment is lifted back to a position above the water surface to avoid the equipment being immersed in water for a long time and reduce the risk of water leakage. At the same time, it is easy to clean and maintain, avoids marine organisms from attaching to the equipment, and increases the reliable working time of the equipment.

[0025] At the same time, the present invention adopts a combined acoustic and optical detection method, that is, a camera is combined with a sonar to increase the distance for monitoring fish distribution; the monitoring unit is equipped with a high-frequency multi-beam imaging sonar device, which can detect the distribution, quantity and movement information of fish schools within a range of 100 meters, cover a larger range, and monitor the dynamic changes of fish schools in real time; and can monitor marine environmental parameters such as water temperature, salinity, water depth and other information through the onboard CTD to analyze the relationship between these parameters and the distribution of fish schools, and better understand the behavior and habitat selection of fish schools; high-definition imaging of fish within a range of 20 meters is performed through the onboard light source and high-definition underwater camera, and the collected data is transmitted to the shore-based monitoring station by real-time data transmission, so that marine resource management departments, scientific research institutions, enterprises and other relevant units can obtain data in a timely manner, which is convenient for further analysis and research.

[0026] (2) The marine ranch monitoring system of the present invention is provided with a pitch motor, which can not only realize horizontal monitoring but also obliquely upward and downward monitoring, that is, pitch monitoring, which can further expand the monitoring viewing angle.

[0027] (3) The marine ranch monitoring system of the present invention is provided with a lifting and rotating unit, which can drive the multi-stage telescopic rod and the monitoring unit at its telescopic end to extend and retract as a whole and rotate along its own axis; at the same time, it drives the multi-stage telescopic rod itself to extend and retract; thereby, a wider range of three-dimensional space observation can be achieved through the lifting, rotation and pitch motors.

[0028] (4) In the marine ranch monitoring system of the present invention, the photoelectric composite cable is arranged in a drag chain wiring trough, which can prevent the photoelectric composite cable from getting entangled during the lifting process, and play a role in supporting and protecting the photoelectric composite cable; especially in an environment that requires frequent movement and twisting, it ensures stability and reliability during the lifting and moving process, and improves operation efficiency and safety.

[0029] (5) The marine ranch monitoring system of the present invention is provided with a storage unit that can record and store high-definition fish resource information captured by an underwater camera, facilitating archiving and data playback analysis.

[0030] (6) In the marine ranch monitoring system of the present invention, a counterweight is provided to balance and lower the center of gravity of the floating body to avoid rollover. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The overall structure diagram of the digital fish resource monitoring system based on the buoy platform of the present invention;

[0032] Figure 2 is a side view of the monitoring system of the present invention;

[0033] Figure 3 It is a working principle diagram of the digital monitoring system of the present invention;

[0034] Figure 4 It is a schematic diagram of the extension state of the multi-stage telescopic rod in the digital monitoring system of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the lifting and rotating unit;

[0036] Among them: 1-floating body, 2-support frame, 3-fixed plate, 4-rack, 5-gear A, 6-communication unit, 7-integrated control unit, 8-first-stage lifting motor, 9-second-stage lifting motor, 10-gear pair, 11-rotating motor, 12-linear guide, 13-multi-stage telescopic rod, 14-drag chain wiring trough, 15-photoelectric composite cable, 16-mounting bracket, 17-warning sign, 18-counterweight. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0038] Embodiment 1:

[0039] This embodiment provides a digital marine ranch monitoring system based on a buoy platform, which can realize real-time monitoring of fish resources at different underwater distances and angles. It has the advantages of simple structure and long imaging distance, and is suitable for deployment in large marine ranches.

[0040] like Figure 1 and Figure 2 As shown, the digital monitoring system includes: a floating body 1, a support frame 2, a power supply unit, a collection unit, an integrated control unit 7, a monitoring unit and a communication unit.

[0041] The monitoring unit includes: a multi-beam imaging sonar for obtaining sonar images, an underwater camera for obtaining optical images, and a temperature-salinity-depth meter (CTD) for obtaining temperature, salinity and depth information; the underwater camera is equipped with a light source.

[0042] In this monitoring system, the floating body 1 is an integral supporting structure, serving as an installation platform for all structures and equipment; the support frame 2 (such as a metal frame) serves as a fixed platform for the power supply unit, the collection unit, the integrated control unit 7, the monitoring unit and the communication unit 6; that is, the support frame 2 is installed on the floating body 1, and the power supply unit, the collection unit, the integrated control unit 7, the monitoring unit and the communication unit 6 are all installed on the support frame 2.

[0043] The float 1 is made of plastic or special foam to ensure that it can float horizontally, thereby ensuring that the water and underwater equipment carried can float stably at the set position.

[0044] The upper end (i.e., the fixed end) of the multi-stage telescopic rod 13 is connected to the support frame 2, and the lower end (i.e., the telescopic end) is connected to the mounting bracket 16, and the monitoring unit is mounted on the mounting bracket 16. As an example, the multi-stage telescopic rod 13 adopts a three-stage telescopic structure, each stage is extended to a length of 2 meters, and the three-stage telescopic structure can be fully extended to a depth of 6 meters.

[0045] When monitoring is not required, the multi-stage telescopic rod 13 lifts the monitoring unit above the water surface; when monitoring is started, the multi-stage telescopic rod 13 is pushed downward to achieve step-by-step expansion, such as Figure 4 As shown, the monitoring unit is then placed underwater to set a working depth for data collection.

[0046] As an example, the mounting bracket 16 is mounted on the telescopic end of the multi-stage telescopic rod 13 through a pitch axis connected to a pitch motor, and the mounting bracket 16 and the monitoring unit carried thereon can perform pitch motion under the drive of the pitch motor, thereby not only realizing horizontal monitoring but also performing pitch monitoring obliquely above and below at a fixed working depth position. As an example, the pitch angle is controlled to be ±90°.

[0047] The power supply unit supplies power to the electrical devices in the entire system. As an example, the power supply unit can be a lead-acid rechargeable battery or a solar cell power supply system; if a lead-acid battery is used, it needs to be replaced on site regularly by the staff, and if a solar cell power supply system is used, it can supply power to the monitoring system for a long time.

[0048] The acquisition unit is electrically connected to the multi-beam imaging sonar, underwater camera and temperature-salinity-depth meter in the monitoring unit, and is electrically connected to the integrated control unit 7 through the optoelectronic composite cable 15; the acquisition unit acquires the sonar image, optical image and temperature-salinity-depth information obtained by the monitoring unit, and integrates (including converting analog signals into digital signals) and transmits them to the integrated control unit 7 through the optoelectronic composite cable 15. In addition, the optoelectronic composite cable 15 is also used to transmit the power of the power supply unit and the control instructions of the integrated control unit to the acquisition unit and the underwater monitoring unit.

[0049] The integrated control unit 7 is connected to the shore-based monitoring station through the communication unit 6, and is electrically connected to the collection unit, the power supply unit, the pitch motor and the multi-stage telescopic rod 13 respectively; the integrated control unit 7 receives control instructions from the shore-based monitoring station through the communication unit, controls the power supply unit, the pitch motor and the multi-stage telescopic rod 13 to work, and sends the information integrated by the collection unit to the shore-based monitoring station through the communication unit.

[0050] As an example, the monitoring system is also provided with a storage unit, which is electrically connected to the acquisition unit and is used to record and store high-definition fish resource information taken by the underwater camera, including high-definition photos and videos; in this example, the storage unit is a hard disk, and the staff can regularly replace the hard disk to facilitate archiving and data playback analysis.

[0051] In addition, a warning sign 17 and a counterweight 18 are provided on the floating body 1; the warning sign 17 has lights and special colors, which can serve as a warning to passing ships during the day and at night; the counterweight 18 is used to balance and lower the center of gravity of the floating body 1, and keep it in a vertical direction to avoid capsizing.

[0052] like Figure 3 As shown, the working principle of the monitoring system is:

[0053] When monitoring is not required, the multi-stage telescopic rod 13 lifts the monitoring unit above the water surface; when monitoring is turned on, the multi-stage telescopic rod 13 is controlled to expand step by step, and then the monitoring unit is placed underwater to set the working depth for data collection. The acquisition unit collects the monitoring information of the temperature-salinity-depth meter (CTD), the multi-beam imaging sonar and the underwater camera respectively, and sends it to the integrated control unit. Specifically: the temperature-salinity-depth meter (CTD) monitors the temperature, salinity and depth information of its location; the multi-beam imaging sonar turns on the active transmitting array, and the sound waves are emitted by the fish target in front and then received and processed by the sonar receiving array to obtain the size, quantity and distance information of the distant fish; after the light source and the underwater camera are turned on, high-definition imaging of the fish within a close distance can be performed, which is more convenient to grasp the information of fish resources. The pitch motor can realize the pitch function of the mounting bracket 16, and the mounting bracket 16 is equipped with a multi-beam imaging sonar, a light source, an underwater camera and a temperature-salinity-depth meter (CTD), thereby not only realizing horizontal monitoring but also monitoring the upper and lower sides, that is, pitching 90°.

[0054] When the work is completed, the integrated control unit 7 sends a recovery command, and the multi-stage telescopic rod 13 is retracted step by step, so that the multi-stage telescopic rod 13 and the mounting bracket 16 at its bottom and other equipment are all above the water surface, completing the recovery of the monitoring unit.

[0055] Embodiment 2:

[0056] On the basis of the above-mentioned embodiment 1, the monitoring system further comprises a lifting and rotating unit, which is used for lifting and rotating the multi-stage telescopic rod 13 as a whole to expand its monitoring range.

[0057] The multi-stage telescopic rod 13 has a fixed end and a telescopic end, the upper end (i.e., the fixed end) is connected to the support frame 2 through a lifting and rotating unit, and the lower end (i.e., the telescopic end) is connected to the mounting bracket 16, and the monitoring unit is mounted on the mounting bracket 16. The lifting and rotating unit can drive the multi-stage telescopic rod 13 and the monitoring unit at the telescopic end to rise and fall as a whole and rotate along its own axis to perform monitoring at different heights and different circumferential directions.

[0058] The monitoring unit can be rotated within a range of ±180° by the lifting and rotating unit, so that the lifting and rotating unit and the multi-stage telescopic rod 13 work together to achieve a larger monitoring range of fish in the marine ranch in three-dimensional space.

[0059] Embodiment 3:

[0060] On the basis of the above-mentioned embodiment 2, this embodiment provides a specific structural form of the lifting and rotating unit; the lifting and rotating unit can also adopt other structures with lifting and rotating functions in the prior art.

[0061] In this example, the lifting and rotating unit includes: a lifting mechanism and a rotating mechanism; that is, the lifting and rotating unit rotating mechanism and the lifting mechanism are combined, and the two mechanisms are completely independent mechanically and do not interfere with each other. The principle is: the rotating mechanism is driven by a closed-loop stepper motor (i.e., a rotating motor) to drive a pair of gear pairs, driving the multi-stage telescopic rod to rotate as a whole to achieve rotating motion.

[0062] The lifting mechanism is used for the overall extension and retraction of the multi-stage telescopic rod 13 and the monitoring unit at its telescopic end. The lifting mechanism adopts a gear rack pair. The stepper motor (i.e., the first-stage lifting motor) drives the worm gear reducer to drive the gear to rotate to achieve lifting and lowering along the rack; since the worm gear reduction is relatively large, self-locking can be achieved.

[0063] The upgrading mechanism is used for the first-stage lifting, and the extension and retraction of the telescopic end of the multi-stage telescopic rod 13 itself is used as the second-stage lifting, that is, the second-stage lifting is used to drive the extension and retraction of the telescopic end of the multi-stage telescopic rod 13 itself, and adopts a trapezoidal lead screw nut pair. The stepping motor (that is, the second-stage lifting motor) drives the extension and retraction of the telescopic end of the multi-stage telescopic rod 13 through the trapezoidal lead screw nut pair.

[0064] Specifically, Figure 5 As shown, the lifting and rotating unit includes: a primary lifting motor 8, a fixed plate 3, a rack 4, a gear A5, a rotating motor 11 and a gear pair 10; a secondary lifting mechanism for driving the telescopic end of the multi-stage telescopic rod 13 to extend and retract itself includes: a secondary lifting motor 9 and a trapezoidal screw.

[0065] The support frame 2 is provided with a linear guide 12 and a rack 4. The fixed plate 3 is slidably matched with the linear guide 12 vertically provided on the support frame 2 and can move along the linear guide 12. The rack 4 is provided in parallel with the linear guide 12. An upper limit sensor and a lower limit sensor are respectively provided at the upper and lower ends of the rack 4 to limit the upper and lower movement of the fixed plate 3. As an example, the upper limit sensor and the lower limit sensor are based on the photoelectric effect and detect the presence or absence of an object by detecting the blocking or reflection of the light beam by the object.

[0066] As an example, linear guide rails 12 are provided at both lateral ends of the fixed plate 3 to ensure the reliability of its linear motion.

[0067] The gear A5 matched with the rack 4 is supported on the fixed plate 3 through a bearing; the first-stage lifting motor 8 is used to drive the gear A5 to rotate, thereby driving the fixed plate 3 to move linearly along the rack 4, and the linear guide rail 12 guides the linear motion.

[0068] The secondary lifting mechanism composed of the secondary lifting motor 9 and the trapezoidal screw and the rotating mechanism composed of the rotating motor 11 and the gear pair 10 are both arranged on the fixed plate 3; the secondary lifting motor 9 converts the rotational motion into linear motion through the trapezoidal screw to drive the telescopic end of the multi-stage telescopic rod 13 to extend and retract step by step.

[0069] The power output end of the rotary motor 11 is connected to a gear in the gear pair 10 through a planetary reducer, and another gear in the gear pair 10 is coaxially connected to the multi-stage telescopic rod 13, so that the rotary motor 11 can drive the multi-stage telescopic rod 13 to rotate as a whole by driving the planetary reducer and the gear pair 10. As an example, the rotary motor 11 adopts a closed-loop stepping motor, and a photoelectric encoder is installed at the tail of the motor, which has a high rotation accuracy; the planetary reducer can increase the output torque. The rotary motor 11 is connected to the top of the multi-stage telescopic rod 13. When the rotation function needs to be realized, the rotary motor 11 drives the multi-stage telescopic rod 13 as a whole to realize the underwater horizontal rotation function.

[0070] When monitoring is required, the integrated control unit 7 sends a descending command, and the fixed plate 3 starts to move downward along the rack 4 under the drive of the first-stage lifting motor 8. When the fixed plate 3 reaches the lower limit sensor position, the moving of the multi-stage telescopic rod 13 has entered the water.

[0071] Then, according to the depth to be monitored, the multi-stage telescopic rod 13 is controlled by the secondary lifting motor 9 to extend step by step to extend the appropriate length. When the set working depth is reached, the integrated control unit 7 sends a command to turn on the multi-beam imaging sonar, light source, underwater camera and temperature-salinity depth meter to realize the joint working mode of sound and light detection. The acquisition unit collects monitoring data and transmits it to the integrated control unit 7 through the optoelectronic composite cable 15. The integrated control unit 7 uses the communication unit (such as satellite communication function) to finally transmit the data back to the shore-based monitoring station. For close-up underwater high-definition fish photos and videos, they are saved through the hard disk inside the storage unit and replaced on time as needed.

[0072] When the horizontal angle needs to be changed during monitoring, the integrated control unit 7 sends a rotation command, and the rotary motor 11 can rotate at any angle in the horizontal plane to achieve observation of the required horizontal angle. The integrated control unit 7 sends a pitch command, and the pitch motor 12 starts working to achieve the observation function of fish targets within a 90° pitch range.

[0073] When not monitoring, the first-stage lifting motor 8 drives the fixing plate 3 back to the position of the upper limit sensor on the rack 4, and at the same time the multi-stage telescopic rod 13 is shortened to the shortest state and returns to the position above the water surface.

[0074] Embodiment 4:

[0075] On the basis of the above-mentioned embodiment 1 or embodiment 2 or embodiment 3, further:

[0076] The collection unit is arranged on the mounting bracket 16 at the telescopic end of the multi-stage telescopic rod 13. During the lifting and lowering process of the mounting bracket 16, the photoelectric composite cable 15 needs to be lifted and lowered accordingly. In order to prevent the photoelectric composite cable 15 from being entangled during the lifting and lowering process, a drag chain type wiring trough 14 is arranged, and the photoelectric composite cable 15 is arranged in the drag chain type wiring trough 14; the drag chain type wiring trough 14 plays a role in supporting and protecting the photoelectric composite cable 15, especially in an environment that requires frequent movement and twisting, to ensure stability and reliability during the lifting and moving process, and improve operating efficiency and safety.

[0077] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A digital monitoring system for marine ranches based on a buoy platform, characterized in that: include: A floating body, a support frame installed on the floating body, a multi-stage telescopic rod arranged on the support frame, a monitoring unit, a power supply unit, a collection unit, an integrated control unit and a communication unit; The fixed end of the multi-stage telescopic rod is connected to the support frame, and the telescopic end is connected to the mounting bracket, and the mounting bracket is equipped with a monitoring unit; The monitoring unit includes: a multi-beam imaging sonar for obtaining sonar images, an underwater camera for obtaining optical images, and a temperature-salinity-depth meter for obtaining temperature, salinity and depth information; The underwater camera is equipped with a light source; The power supply unit is used to supply power to the electrical equipment in the entire system; The acquisition unit is respectively connected to the multi-beam imaging sonar, underwater camera and temperature-salinity-depth meter in the monitoring unit, and is electrically connected to the integrated control unit through an optoelectronic composite cable; The integrated control unit communicates with the shore-based monitoring station through the communication unit, and is electrically connected to the collection unit, the power supply unit and the multi-stage telescopic rod respectively.

2. The marine ranch digital monitoring system based on a buoy platform as claimed in claim 1, characterized in that: The mounting bracket is mounted on the telescopic end of the multi-stage telescopic rod via a pitch axis connected to a pitch motor, and the mounting bracket and the monitoring unit carried thereon can perform pitch motion under the drive of the pitch motor.

3. The marine ranch digital monitoring system based on a buoy platform as claimed in claim 1 or 2, characterized in that: It also includes a lifting and rotating unit, and the fixed end of the multi-stage telescopic rod is connected to the support frame through the lifting and rotating unit; The lifting and rotating unit can drive the monitoring unit at the multi-stage telescopic rod and its telescopic end to lift and lower as a whole and rotate along its own axis to perform monitoring at different heights and different circumferential directions.

4. The marine ranch digital monitoring system based on a buoy platform as claimed in claim 3 is characterized in that: The lifting and rotating unit comprises: a primary lifting motor, a fixed plate, a rack, a gear A, a rotating motor and a gear pair; A rack is vertically arranged on the support frame, and a gear A matched with the rack is supported on the fixed plate through a bearing; the first-stage lifting motor is used to drive the gear A to rotate, thereby driving the fixed plate to move linearly along the rack; The rotary mechanism composed of the rotary motor and the gear pair is arranged on a fixed plate; the power output end of the rotary motor is connected to a gear in the gear pair, and the other gear in the gear pair is coaxially connected to the fixed end of the multi-stage telescopic rod, so that the rotary motor drives the multi-stage telescopic rod to rotate as a whole through the gear pair.

5. The marine ranch digital monitoring system based on a buoy platform as claimed in claim 4, characterized in that: A secondary lifting mechanism consisting of a secondary lifting motor and a trapezoidal lead screw is arranged on a fixed plate; the trapezoidal lead screw converts the rotary motion of the secondary lifting motor into a linear motion to drive the telescopic end of the multi-stage telescopic rod to telescope step by step.

6. The marine ranch digital monitoring system based on a buoy platform as claimed in claim 4 or 5, characterized in that: The fixing plate is slidably matched with a linear guide rail vertically arranged on the supporting frame to guide its lifting movement.

7. The marine ranch digital monitoring system based on a buoy platform as claimed in claim 4 or 5, characterized in that: The upper and lower ends of the rack are respectively equipped with an upper limit sensor and a lower limit sensor, which are used to limit the upward and downward movement of the fixing plate.

8. The marine ranch digital monitoring system based on a buoy platform as claimed in claim 1 or 2, characterized in that: The photoelectric composite cable is arranged in a drag chain type wiring trough.

9. The marine ranch digital monitoring system based on a buoy platform as claimed in claim 1 or 2, characterized in that: The floating body is provided with a configuration block for balancing and lowering the center of gravity of the floating body.

10. The marine ranch digital monitoring system based on a buoy platform according to claim 1 or 2, characterized in that: It also includes a storage unit, which is electrically connected to the acquisition unit and is used to store the images taken by the underwater camera.

Images