Ocean relay buoy

Abstract

The invention discloses an ocean relay buoy, and relates to the technical field of ocean monitoring, the ocean relay buoy comprises a main shell, a control system, a pay-off device, a buoyancy device, a position detection assembly and a data transmission device, an optical cable is wound on the pay-off device, the pay-off device can realize pay-off of the optical cable, and the control system can be connected with a subsurface buoy observation platform through the optical cable; the buoyancy device is arranged at the top of the main shell and is in signal connection with the control system; the position detection assembly is used for detecting the position of the ocean relay buoy in seawater, the position detection assembly is in signal connection with the control system, and the control system can control the buoyancy device to be started according to a signal detected by the position detection assembly; the data transmission device is in signal connection with the control system and can transmit collected data back to a shore station. Real-time data transmission of the underwater subsurface buoy observation platform can be achieved, the subsurface buoy observation platform does not need to float upwards, the problem that the transmission rate of an underwater communication machine is low is solved, and the underwater communication machine is not affected by the underwater environment.

Description

Technical Field

[0001] The present invention relates to the technical field of ocean monitoring, and in particular to an ocean relay buoy. Background Art

[0002] At present, in order to achieve real-time data transmission, the buoy observation platform usually adopts the following strategies: 1. Periodic surfacing: The buoy observation platform is designed to automatically float to the surface after working underwater for a period of time to transmit data; 2. Data compression: In order to reduce the amount of transmitted data, the buoy observation platform will compress the data locally; 3. Combining multiple communication methods, using hydroacoustic communication underwater and switching to satellite communication after reaching the surface; among them, hydroacoustic communication is a way for a submerged buoy to transmit data using sonar technology to surface buoys or other receivers, and then send the data to the shore base station via satellite or radio waves.

[0003] However, large-scale submerged observation platforms cannot float due to their own structure. Although underwater acoustic communication can be carried out underwater, the transmission rate is low and is greatly affected by the underwater environment (such as multipath effect and noise).

[0004] Therefore, an ocean relay buoy is provided to solve the above problems existing in the prior art. Summary of the invention

[0005] The purpose of the present invention is to provide an ocean relay buoy to solve the problems existing in the above-mentioned prior art, and to realize real-time transmission of data from an underwater buoy observation platform without the need for the buoy observation platform to surface, thereby improving the problem of low transmission rate of underwater communicators and being unaffected by the underwater environment.

[0006] To achieve the above object, the present invention provides the following solutions: The present invention provides an ocean relay buoy, comprising: main housing; A control system, wherein the control system is disposed in the main housing; A wire-releasing device, which is arranged at the bottom of the main housing and has an optical cable wound around it. The wire-releasing device can realize the wire-releasing of the optical cable, and the control system can be connected to the buoy observation platform through the optical cable; A buoyancy device, the buoyancy device is arranged on the top of the main shell, and the buoyancy device is connected to the control system signal; A position detection component, the position detection component is used to detect the position of the ocean relay buoy in the seawater, and the position detection component is connected to the control system signal, and the control system can control the buoyancy device to open according to the signal detected by the position detection component; A data transmission device is connected to the control system signal and can transmit the collected data back to the shore station.

[0007] Preferably, the buoyancy device includes a gas cylinder, an air valve and an air bag, the air bag is arranged around the top outer side of the main shell, the gas cylinder and the air valve are both arranged in the main shell, the gas cylinder is connected to the air bag through an inflation tube, and the air valve is arranged on the inflation tube; in an initial state, the air bag is in a contracted state, and when the position detection component detects that the ocean relay buoy has risen to a specified position, the control system controls the air valve to open to inflate the air bag.

[0008] Preferably, it also includes a plurality of damping plates, which are evenly distributed on the outer wall of the main shell along the circumference, and the bottom end of any one of the damping plates is rotatably connected to the main shell; when the airbag is in a contracted state, the plurality of damping plates are annularly wrapped around the outside of the airbag, and the top ends of the plurality of damping plates are tightened by elastic rings, so that when the airbag is inflated, the damping plates can be pushed to unfold.

[0009] Preferably, an opening is provided at the top of the main shell, and a protective cover is provided at the opening. The protective cover is connected to a flip device, and the flip device can drive the protective cover to open so that the data transmission device is exposed.

[0010] Preferably, an end cover is further provided at the opening, the bottom of the shield is sealedly connected to the end cover, and the shield is connected to the end cover via an elastic drawstring; The flip cover device includes a motor, a reducer, a screw and a top piece, the output shaft of the motor is connected to the reducer, the output shaft of the reducer is connected to the screw, the screw is threadedly connected to the end cover, the top end of the screw is rotatably connected to the top piece, the top piece is located below the shield, and a guide rod is provided on the end cover, the motor is slidably provided on the guide rod, and the motor can drive the screw to rotate, so that the motor moves up and down along the guide rod, thereby driving the top piece to move up and down.

[0011] Preferably, the position detection assembly includes a pressure switch, which is arranged on the top of the main housing. When the ocean relay buoy floats to a certain water depth, the pressure switch is turned on, and the control system controls the buoyancy device to turn on; It also includes a timer, which is connected to the control system signal. When the ocean relay buoy floats up to a specified time, the control system controls the buoyancy device to start.

[0012] Preferably, it further comprises a seawater switch, which is arranged at the bottom of the main housing and is connected to the control system signal. When the seawater switch contacts the air, it is in an off state, and when the seawater switch contacts the seawater, it is in an on state, and the control system is powered on and works; It also includes a compass, which is arranged in the main shell and is connected to the control system signal. The compass can collect the azimuth and attitude data of the ocean relay buoy and transmit them to the control system.

[0013] Preferably, it also includes a power supply, which is arranged in the main shell and is used for power supply.

[0014] Preferably, the data transmission device transmits data by satellite and / or wireless communication.

[0015] Preferably, a counterweight is also provided at the bottom of the main shell.

[0016] Compared with the prior art, the present invention has achieved the following technical effects: The ocean relay buoy in the present invention can be deployed together with the submerged buoy observation platform. After the observation begins, it is released by the launching device of the submerged buoy observation platform and floats on the sea surface. The control system of the ocean relay buoy can be connected to the submerged buoy observation platform through an optical cable. The data transmission device is connected with the control system signal, and the collected data can be transmitted back to the shore station, thereby realizing real-time transmission of data from the underwater submerged buoy observation platform. The submerged buoy observation platform does not need to surface, which improves the problem of low transmission rate of the underwater communication machine and is not affected by the underwater environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 creative work.

[0018] Figure 1 It is a block diagram of the composition of the ocean relay buoy in an embodiment of the present invention; Figure 2 This is a working flow diagram of the ocean relay buoy in an embodiment of the present invention; Figure 3 This is a state diagram of the ocean relay buoy on standby and before surfacing in an embodiment of the present invention; Figure 4This is a working state diagram of the ocean relay buoy after it floats to the water surface in an embodiment of the present invention; Figure 5 It is a partial schematic diagram of an ocean relay buoy in an embodiment of the present invention; Figure 6 Schematic diagram of the structure of the wireless transmission antenna, protective cover and flip cover device in the embodiment of the present invention.

[0019] In the figure: 1-elastic drawstring; 2-protective cover; 3-data transmission device; 4-end cover; 5-top plate; 6-screw rod; 7-pressure switch; 8-coupling; 9-reducer; 10-motor; 11-air valve; 12-motor mounting plate; 13-air bag; 14-damping plate; 15-damping plate seat; 16-gas cylinder; 17-main shell; 18-guide rod; 19-instrument mounting frame; 20-compass; 21-collection circuit; 22-control circuit; 23-battery; 24-photoelectric drive; 25-optical cable; 26-base; 27-seawater switch; 28-counterweight. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 creative work are within the scope of protection of the present invention.

[0021] The purpose of the present invention is to provide an ocean relay buoy to solve the problems existing in the above-mentioned prior art, and to realize real-time transmission of data from an underwater buoy observation platform without the need for the buoy observation platform to surface, thereby improving the problem of low transmission rate of underwater communicators and being unaffected by the underwater environment.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Embodiment 1 like Figure 1-Figure 6As shown, in this embodiment, a marine relay buoy is provided, which mainly includes a main shell 17, a control system, a line-releasing device, a buoyancy device, a position detection component and a data transmission device 3; wherein, the control system is arranged in the main shell 17; the line-releasing device is arranged at the bottom of the main shell 17, and an optical cable 25 is wound on the line-releasing device, and the line-releasing device can realize the line-releasing of the optical cable 25, and the control system can be connected to a submerged buoy observation platform through the optical cable 25; the buoyancy device is arranged at the top of the main shell 17, and the buoyancy device is connected to the control system signal; the position detection component is used to detect the position of the marine relay buoy in the seawater, and the position detection component is connected to the control system signal, and the control system can control the buoyancy device to open according to the signal detected by the position detection component; the data transmission device 3 is connected to the control system signal, and can transmit the collected data back to the shore station.

[0024] In this embodiment, the ocean relay buoy can be deployed together with the submerged buoy observation platform. After the observation begins, it is launched by the launching device of the submerged buoy observation platform and floats on the sea surface. The control system of the ocean relay buoy can be connected to the submerged buoy observation platform through the optical cable 25. The data transmission device 3 is connected with the control system signal, and can transmit the collected data back to the shore station, so as to realize the real-time transmission of the data of the underwater submerged buoy observation platform. There is no need for the submerged buoy observation platform to surface, which improves the problem of low transmission rate of the underwater communication machine and is not affected by the underwater environment. Moreover, a buoyancy device is provided to enable the ocean relay buoy to float on the water surface, which improves the wave-following characteristics of the ocean relay buoy and allows more effective working time under larger sea conditions.

[0025] In this embodiment, the main shell 17 is a sealed pressure-resistant shell, which has no deformation and leakage after a 3MPa pressure test. A storage cabin is provided inside the shell, and the control system, wire-releasing device and data transmission device 3 are all arranged in the storage cabin.

[0026] In this embodiment, the line-releasing device can be selected according to specific work needs, for example, it can be a line-releasing wheel with an optical cable 25 wound on it. During the buoyancy of the ocean relay buoy and the floating on the water surface, the optical cable 25 stored in the main shell 17 is gradually released under the action of the buoyancy of the ocean relay buoy and the water resistance, and transmits the data of the underwater submersible observation platform to the data transmission device 3; wherein, the tension required for cable release is less than 100g to ensure that it does not generate excessive resistance to the buoyancy of the ocean relay buoy.

[0027] In this embodiment, the buoyancy device mainly includes a gas cylinder 16, an air valve 11 and an air bag 13. The air bag 13 is arranged around the top outer side of the main shell 17. The gas cylinder 16 and the air valve 11 are both arranged in the main shell 17. The gas cylinder 16 is connected to the air bag 13 through an inflation tube, and the air valve 11 is arranged on the inflation tube. In the initial state, the air bag 13 is in a contracted state. When the position detection component detects that the ocean relay buoy has risen to the specified position, the control system controls the air valve 11 to open to inflate the air bag 13.

[0028] In this embodiment, the material of the airbag 13 is a relatively soft, easily foldable plastic that can withstand a certain pressure.

[0029] In this embodiment, an air bag 13 is arranged near the top of the ocean relay buoy so that the state of the ocean relay buoy on the water surface can better meet the requirements of detection work, that is, it can maintain a better posture under relatively severe sea conditions and can perform detection work more effectively.

[0030] In this embodiment, the airbag 13 also mainly plays the following roles: (1) The wave-following characteristics of the ocean relay buoy have been improved, which allows for more effective working time in severe sea conditions; (2) It helps to improve the distribution of the center of gravity and buoyancy of the ocean relay buoy and enhance its ability to maintain a balanced posture; (3) It can play a role in protecting electronic components such as the data transmission device 3 to a certain extent (such as protecting against water splashes).

[0031] In this embodiment, according to the working process of the ocean relay buoy, the airbag 13 is deployed when it rises to about 1-2m above the water surface. At this time, the external pressure of the airbag 13 is about 1Bar. According to this condition, after calculation, the main technical parameters of the buoyancy device are determined as follows: Airbag 13 volume: 4L (liter, capacity unit); Gas cylinder 16 volume: 0.8L; Compressed gas pressure: 6.5~7Bar (bar, pressure unit); The above parameters can ensure that the airbag 13 overcomes the external pressure and is deployed normally.

[0032] In this embodiment, a plurality of damping plates 14 are further included, and the plurality of damping plates 14 are uniformly distributed on the outer wall of the main shell 17 along the circumference, and the bottom end of any damping plate 14 is rotatably connected to the main shell 17. Specifically, a damping plate seat 15 is provided on the main shell 17, and the bottom of the damping plate 14 is rotatably connected to the corresponding damping plate seat 15 through a rotating shaft; when the airbag 13 is in a contracted state, the plurality of damping plates 14 are annularly wrapped around the outer side of the airbag 13, and the plurality of The top of the damping plate 14 is tightened by an elastic ring. When the airbag 13 is inflated, it can push the damping plate 14 to unfold. When the airbag 13 is inflated and pushes the damping plate 14, the elastic ring produces elastic deformation, and finally the damping plate 14 is separated from the elastic ring and unfolded along the rotating shaft under the thrust of the airbag 13. When the damping plate 14 is unfolded to a horizontal position, it is pressed against the outer wall of the main shell 17, and the airbag 13 filled with air presses it, so that the damping plate 14 is limited in the upper and lower directions, so that it cannot shake up and down at will. Among them, the elastic ring can be selected according to specific work needs, for example, a rubber ring can be selected.

[0033] As a preferred embodiment, a total of 8 damping plates 14 are provided in this embodiment. When the 8 damping plates 14 are folded, they form a cylindrical shape and are located on the upper part of the ocean relay buoy. Each damping plate 14 is designed to be a narrow and thin sheet with an arc, which can match the airbag 13.

[0034] In this embodiment, a damping plate 14 is provided. During the rising stage of the ocean relay buoy, the damping plate 14 is opened to increase the water resistance thereof, thereby slowing down the rising speed and improving the wave-following characteristics of the ocean relay buoy. Moreover, the damping plate 14 can protect the airbag 13 wrapped therein before being opened.

[0035] Furthermore, in this embodiment, a counterweight 28 is also provided at the bottom of the main shell 17. The use of the counterweight 28 and the airbag 13 can effectively improve the distribution of the weight and the center of buoyancy of the ocean relay buoy.

[0036] In this embodiment, when the ocean relay buoy is in a state before launching, the total length is 1200mm and the maximum diameter is 118mm; when the airbag 13 is inflated and the damping plate 14 is unfolded, the maximum diameter is 500mm, the length of the part exposed to the water surface is about 210mm, and the water surface line is located at the center line of the airbag 13; the total weight of the ocean relay buoy is about 11.2kg, the buoyancy in water is about 12kg, and the net buoyancy is about 0.8kg; when the ocean relay buoy is in a state before launching, the center of gravity and the center of buoyancy are located on the central axis at a distance of 601.5mm and 634.5mm from the bottom respectively, and the positional relationship between the center of gravity and the center of buoyancy ensures that the ocean relay buoy is in an upright state when floating in the water after launching.

[0037] In this embodiment, an opening is provided at the top of the main shell 17, and a protective cover 2 is provided at the opening, and the protective cover 2 is connected to a flip device, and the flip device can drive the protective cover 2 to open to expose the data transmission device 3; wherein, it should be noted that the data transmission device 3 includes a satellite transmission antenna and / or a wireless transmission antenna, and can transmit data by satellite and / or wireless communication. Specifically, when the ocean relay buoy floats to the surface, when the distance to the offshore station is relatively close, a wireless communication method is adopted, and when the distance to the offshore station is relatively far, a satellite communication method is adopted, so as to ensure the real-time and integrity of data transmission.

[0038] The above-mentioned data transmission device 3 is the main working equipment of the ocean relay buoy, but it itself does not have the pressure resistance and sealing conditions; therefore, when the ocean relay buoy is in the rising process after being launched, the protective cover 2 is closed to form a pressure-resistant and sealed cavity with the main shell 17 to protect the data transmission device 3. When the ocean relay buoy floats to the water surface for measurement, the flip cover device drives the protective cover 2 to open, so that the data transmission device 3 is exposed, that is, it is in an unobstructed state, which is convenient for data transmission.

[0039] In this embodiment, an end cover 4 is also provided at the opening, and the bottom of the protective cover 2 is sealed and connected to the end cover 4 to form a pressure-resistant sealing structure, and the sealing form is a radial O-ring seal; and the protective cover 2 is connected to the end cover 4 through an elastic drawstring 1, and one end of the elastic drawstring 1 is hooked on the end cover 4, and the other end is hooked on the protective cover 2.

[0040] The flip cover device mainly includes a motor 10, a reducer 9, a screw 6 and a top plate 5. The output shaft of the motor 10 is connected to the reducer 9, and the output shaft of the reducer 9 is connected to the screw 6 through a coupling 8. The screw 6 is connected to a nut thread provided on the end cover 4, and the top end of the screw 6 is rotatably connected to the top plate 5. The top plate 5 is located below the protective cover 2, and a guide rod 18 is provided on the end cover 4. The motor 10 is fixed on a motor mounting plate 12, and the motor mounting plate 12 is slidably provided on the guide rod 18. The motor 10 can drive the screw 6 to rotate, so that the motor 10 moves up and down along the guide rod 18, thereby driving the top plate 5 to move up and down, so as to facilitate opening the protective cover 2.

[0041] The specific working process of the flip cover device in this embodiment is as follows: 1) When the ocean relay buoy floats to the surface, the motor 10 is controlled to rotate, and after deceleration, it is pushed upward under the action of the nut fixed on the end cover 4. At this time, the guide rod 18 limits the rotation of the motor 10 to ensure that the output shaft can provide torque for the coupling 8; 2) The top plate 5 is pushed by the screw rod 6 to lift the shield 2 a certain distance (about 6 mm) to disengage the sealing connection between the top plate 5 and the end cover 4; 3) The elastic drawstring 1 flips open the protective cover 2 and separates it from the ocean relay buoy.

[0042] In this embodiment, the position detection component includes a pressure switch 7, which is arranged on the top of the main housing 17. When the ocean relay buoy is below a certain water depth, the pressure switch 7 is in an off state. When the ocean relay buoy floats to a certain water depth (about 1 to 2 meters from the water surface) or floats to the water surface, the pressure switch 7 is turned on, and the control system controls the buoyancy device to turn on. The signal of the pressure switch 7 provides the control system with a basis for judging the state of the ocean relay buoy. Furthermore, it also includes a timer, which is connected to the control system signal. When the ocean relay buoy floats up to a specified time, the control system controls the buoyancy device to turn on; the timer is set to provide a backup control means after the pressure switch 7 fails under unexpected circumstances, and its timing time is adjustable.

[0043] In this embodiment, a base 26 is provided at the bottom of the main shell 17, and a seawater switch 27 is provided on the base 26. The seawater switch 27 is connected to the control system signal. When the seawater switch 27 is in contact with the air, it is in an off state, and when the seawater switch 27 is in contact with seawater, it is in an on state. The control system is powered on and works, and the signal of the seawater switch 27 also provides the control system with a basis for judging the state of the ocean relay buoy.

[0044] In this embodiment, a compass 20 is also included. The compass 20 is disposed in the main housing 17 and is connected to the control system signal. The compass 20 can collect the azimuth and attitude data of the ocean relay buoy and transmit them to the control system.

[0045] In this embodiment, the control system mainly includes a control circuit 22 and a collection circuit 21. The control circuit 22 is connected to the seawater switch 27, the pressure switch 7, the collection circuit 21, the buoyancy device and the flip device, etc. The control circuit 22 controls the collection circuit 21 and each mechanical actuator (buoyancy device and flip device, etc.) to perform actions according to a preset workflow based on signals provided by the pressure switch 7 and the seawater switch 27; the collection circuit 21 is connected to the compass 20, the data transmission device 3, etc., and is also connected to the optical cable 25 through the photoelectric drive 24 to perform data collection, processing and transmission control.

[0046] In this embodiment, an instrument mounting frame 19 is further provided in the main housing 17 , and the compass 20 , the acquisition circuit 21 and the control circuit 22 are all mounted on the instrument mounting frame 19 .

[0047] In this embodiment, a power supply is also included, which is arranged in the main shell 17 for power supply; specifically, the power supply is composed of 8 batteries 23 connected in series and parallel according to power demand, with a supply voltage of 12VDC, which supplies power to the control circuit 22, the acquisition circuit 21, the photoelectric drive 24 and the mechanical actuator.

[0048] The ocean relay buoy forms a mission cycle from launch to abandonment after completing the measurement mission. During this process, the ocean relay buoy performs a series of tasks such as measurement, data transmission, and structural state change according to the designed workflow. The whole process is as follows: 1) The ocean relay buoy is in a sealed cabin of the launch device before launch and has no contact with seawater; 2) the ocean relay buoy is launched; 3) The ocean relay buoy is in an upright state and floats upward. During the floating process, the pay-out device allows the optical cable 25 to be continuously paid out and unfolded under very small pulling force; 4) The seawater switch 27 is in contact with the seawater and is turned on; 5) The control system is powered on and the data is transmitted back; 6) Timer starts; 7) When the ocean relay buoy floats up to a certain depth, the pressure switch 7 is turned on; 8) When the pressure switch 7 is turned on or the timing time is reached, the high-pressure gas in the gas cylinder 16 is controlled to fill the airbag 13, so that the airbag 13 is deployed, and the damping plate 14 is opened at the same time, and the floating speed of the standard body is slowed down; 9) The ocean relay buoy floats to the surface of the water and floats. At this time, the top of the ocean relay buoy is exposed above the water surface. The motor 10 of the flip cover device drives the top sheet 5 to lift the shield 2 to a certain height, and then the elastic drawstring 1 flips the shield 2 and separates it from the ocean relay buoy; 10) When the optical cable 25 reaches the limit length and breaks, the transmission stops; 11) Complete all tasks.

[0049] The design requirements of the ocean relay buoy described in this embodiment are as follows: The ocean relay buoy is designed as a columnar structure, and in the initial state, the outer dimensions are 118mm (diameter) × 1200mm (length); Resistant to 300 meters of underwater static pressure and can be stored for 92 days; The ocean relay buoy maintains positive buoyancy, and a reasonable buoyancy range is determined by fluid dynamics simulation calculation; The maximum endurance attitude of the ocean relay buoy when floating on the water surface is: swinging 10 degrees.

[0050] The working conditions of the ocean relay buoy in this embodiment are as follows: Working sea conditions: Level 3 and below; Maximum wind speed: 10kn (kn: nautical miles per hour); Wave period: 9~20s (s: seconds); Maximum speed when the ocean relay buoy is released: 12kn; Maximum current speed: 6kn; The release depth of the ocean relay buoy is 10-300 m (m: meter); The speed of the ocean relay buoy when it leaves the launch tube: 2m / s (m / s: meter / second); The launching method is: launching the missile underwater vertically or approximately vertically to the water surface, and toward the water surface; The cable-releasing force of the ocean relay buoy and the optical cable 25 is less than 100N (N: Newton), and the cable-releasing method adopts the ocean relay buoy and the underwater submersible observation platform to release the cable in both directions at the same time. The weight of the optical cable 25 and the cable-releasing device carried by the ocean relay buoy is not more than 0.5kg, the diameter is not more than 100mm of the inner diameter of the ocean relay buoy, and the length is not more than 100mm; The impact load of the ocean relay buoy when launched is no more than 10N.

[0051] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An ocean relay buoy, characterized in that: include: main housing; A control system, wherein the control system is disposed in the main housing; A wire-releasing device, which is arranged at the bottom of the main housing and has an optical cable wound around it. The wire-releasing device can realize the wire-releasing of the optical cable, and the control system can be connected to the buoy observation platform through the optical cable; A buoyancy device, the buoyancy device is arranged on the top of the main shell, and the buoyancy device is connected to the control system signal; A position detection component, the position detection component is used to detect the position of the ocean relay buoy in the seawater, and the position detection component is connected to the control system signal, and the control system can control the buoyancy device to open according to the signal detected by the position detection component; A data transmission device is connected to the control system signal and can transmit the collected data back to the shore station.

2. The ocean relay buoy according to claim 1, characterized in that: The buoyancy device includes a gas cylinder, an air valve and an air bag. The air bag is arranged around the top outer side of the main shell. The gas cylinder and the air valve are both arranged in the main shell. The gas cylinder is connected to the air bag through an inflation tube. The air valve is arranged on the inflation tube. In an initial state, the air bag is in a contracted state. When the position detection component detects that the ocean relay buoy has risen to a specified position, the control system controls the air valve to open to inflate the air bag.

3. The ocean relay buoy according to claim 2, characterized in that: It also includes a plurality of damping plates, which are evenly distributed on the outer wall of the main shell along the circumference, and the bottom end of any one of the damping plates is rotatably connected to the main shell; when the airbag is in a contracted state, the plurality of damping plates are annularly wrapped around the outside of the airbag, and the top ends of the plurality of damping plates are tightened by elastic rings, so that when the airbag is inflated, the damping plates can be pushed to unfold.

4. The ocean relay buoy according to claim 1, characterized in that: The top of the main shell is provided with an opening, and a shield is provided at the opening. The shield is connected with a flip device, and the flip device can drive the shield to open so that the data transmission device is exposed.

5. The ocean relay buoy according to claim 4, characterized in that: The opening is also provided with an end cover, the bottom of the shield is sealedly connected to the end cover, and the shield is connected to the end cover via an elastic drawstring; The flip cover device includes a motor, a reducer, a screw and a top piece, the output shaft of the motor is connected to the reducer, the output shaft of the reducer is connected to the screw, the screw is threadedly connected to the end cover, the top end of the screw is rotatably connected to the top piece, the top piece is located below the shield, and a guide rod is provided on the end cover, the motor is slidably provided on the guide rod, and the motor can drive the screw to rotate, so that the motor moves up and down along the guide rod, thereby driving the top piece to move up and down.

6. The ocean relay buoy according to claim 1, characterized in that: The position detection assembly includes a pressure switch, which is arranged on the top of the main housing. When the ocean relay buoy floats up to a certain water depth, the pressure switch is turned on, and the control system controls the buoyancy device to turn on; It also includes a timer, which is connected to the control system signal. When the ocean relay buoy floats up to a specified time, the control system controls the buoyancy device to start.

7. The ocean relay buoy according to claim 6, characterized in that: It also includes a seawater switch, which is arranged at the bottom of the main housing and is connected to the control system signal. When the seawater switch is in contact with the air, it is in an off state, and when the seawater switch is in contact with seawater, it is in an on state, and the control system is powered on and works; It also includes a compass, which is arranged in the main shell and is connected to the control system signal. The compass can collect the azimuth and attitude data of the ocean relay buoy and transmit them to the control system.

8. The ocean relay buoy according to claim 1, characterized in that: It also includes a power supply, which is arranged in the main shell and is used for power supply.

9. The ocean relay buoy according to claim 1, characterized in that: The data transmission device transmits data by satellite and / or wireless communication.

10. The ocean relay buoy according to claim 1, characterized in that: A counterweight is also provided at the bottom of the main housing.

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