CN209492668U - An ocean profiling buoy - Google Patents

Abstract

A kind of ocean profile buoy including shell, at least one the outer oil sac being set to outside shell and is set to the intracorporal oil sac at least one of the shell, and interior oil sac is connected to the outer oil sac；Power unit, power unit are drivingly connected the interior oil sac, and power unit is suitable for driving the interior oil sac so that oil liquid moves between the interior oil sac and the outer oil sac；Cubing unit, cubing unit are suitable for measuring oil liquid volume, the oil liquid volume in outer oil sac, and/or the oil liquid volume moved between the outer oil sac and the interior oil sac in the interior oil sac；Control unit, control unit are connect with the power unit, and control unit, which receives data measured by the cubing unit and controls the power unit, drives the interior oil sac.The buoy that the application proposes not only has the advantages that automatic adjusument profile buoy, but also can spring layer information to ocean and ocean current flow velocity measure, can know more marine informations.

Description

An ocean profiling buoy

technical field

The utility model relates to the technical field of ocean parameter monitoring, in particular to an ocean profile buoy.

Background technique

Ocean profile buoys, also known as Argo buoys, can automatically move up and down in the vertical direction of the ocean according to mission requirements, rely on the sensors set in the profile buoys to measure the parameters of the ocean profile buoys, and transmit the measured data to Scientific research ships or shore-based receiving stations provide data for climate warnings, scientific research, and future development of the ocean. Specifically, the upward and downward movement of the profile buoy in the ocean mainly depends on the hydraulic system to control the volume of the oil bag. Under the condition that the mass of the profile buoy remains the same, increasing the volume of the oil bag can obtain greater buoyancy. When the buoyancy force on the profile buoy is greater than the gravity, it can float up; otherwise, the profile buoy dives.

The utility model patent with application number CN201310393878.1 discloses a self-sustaining profile buoy platform reciprocating buoyancy adjustment device. Due to the insufficient self-priming force of the plunger pump, the air pump and the plunger cylinder are used to adjust the buoyancy when floating up and down. However, this method takes up a lot of space inside the profile buoy, increases the load of the profile buoy, and cannot be performed quickly and flexibly. Control the up and down movement of the profile buoy.

Conventional ocean profiling buoys generally detect water depths of 2,000 meters, and the main measured data are ocean temperature, salinity, and depth. For example, the utility model patent with the application number CN201410618620.1 discloses an underwater profile detection buoy device, which discloses a profile buoy with a longer working life, but its working water depth is relatively shallow and it mainly detects the temperature, Salinity and depth, it is not possible to measure the temperature, salinity and depth of the deep ocean. This is essentially a matter of ocean detection depth for profiling buoys.

In order to further measure the deep sea area of the ocean and obtain more accurate ocean data. The utility model patent with the application number CN201810043448.X discloses a deep-sea self-sustaining profile intelligent buoy system, whose maximum working water depth can reach 6000 meters, and can also meet the measurement of ocean temperature, salinity and depth data. However, it cannot adaptively adjust the upward and downward movement of the profile buoy as the depth of the ocean increases, and it cannot measure parameters other than ocean temperature, salinity and depth, such as the measurement of ocean current velocity.

Usually, the parameters of the ocean detected at different detection positions are different, especially at the oceanic layer position, the ocean parameters change significantly with the depth. The detection frequency of existing profiling buoys in the ocean is fixed, which cannot meet the requirements of long-range parameter measurement, especially the fine measurement at the cline. Therefore, it is necessary to design an adaptive adjustment of the buoyancy of the profile buoy at different positions to meet the requirements of fine measurement of ocean parameters.

It should be noted that the above content belongs to the scope of the inventor's technical cognition and does not necessarily constitute the prior art.

Utility model content

The utility model provides an ocean profile buoy, which not only has the advantages of self-adaptive adjustment of the profile buoy, but also can measure the ocean current flow velocity, obtain more ocean information, and solve the problems in the prior art.

The technical scheme that the utility model adopts for solving the problems of the technologies described above is:

An ocean profiling buoy comprising,

a housing, at least one outer oil bladder disposed outside the housing, and at least one inner oil bladder disposed within the housing, the inner oil bladder communicating with the outer oil bladder;

a power unit drivingly connected to the inner oil bladder, the power unit being adapted to drive the inner oil bladder to move oil between the inner oil bladder and the outer oil bladder;

A volume measurement unit adapted to measure the volume of oil in the inner oil bladder, the volume of oil in the outer oil bladder, and/or between the outer oil bladder and the inner oil bladder The volume of oil moved between;

A control unit, the control unit is connected with the power unit, the control unit receives the data measured by the volume measurement unit and controls the power unit to drive the inner oil bag.

An ocean profile buoy also includes a temperature, salt and depth measurement unit for measuring seawater temperature, salt and depth data, and the temperature and salt depth measurement unit is connected to the control unit; and/or

a pressure measuring unit for measuring oil pressure, said pressure measuring unit being connected to said control unit; and/or

A displacement measurement unit for measuring displacement, the displacement measurement unit can measure the horizontal displacement of the ocean profile buoy, the displacement measurement unit is connected to the control unit, and the control unit receives the displacement signal measured by the displacement detection unit for further processing and calculation as calculation Ocean current speed provides data.

The power unit includes a hydraulic pump, and the hydraulic pump is respectively connected to the inner oil bag and the outer oil bag through pipelines;

The inner oil bag and the outer oil bag are arranged above the hydraulic pump.

The inner oil bag is a bellows-shaped oil bag;

In one embodiment, the volume measurement unit includes a linear displacement sensor, which is adapted to measure the length of the bellows-shaped inner oil bag to calculate the volume of oil in the inner oil bag.

In one embodiment, the volume measurement unit includes a flow meter, and the flow meter is arranged in a pipeline connecting the inner oil bladder and the outer oil bladder.

In one embodiment, the power unit further includes a relief valve and a hydraulic booster arranged in the pipeline connecting the inner oil bag and the outer oil bag;

In one embodiment, the hydraulic pump is a bi-directional gear pump.

A buoy control method for marine profile measurement, the buoy includes a casing, at least one outer oil bag arranged outside the casing, and at least one inner oil bag arranged inside the casing, the inner oil bag and the outer oil bag bladder communication; a power unit drivingly connected to the inner oil bladder, the power unit being adapted to drive the inner oil bladder to move oil between the inner oil bladder and the outer oil bladder , the control method includes the steps of:

Measuring the pressure data of the oil and calculating the depth value and the vertical speed value of the current buoy according to the pressure data;

Measuring the temperature data and/or salinity data of the seawater at the position of the buoy and calculating the seacline position parameter of the current buoy according to the temperature data and/or salinity data;

measuring the oil volume in the inner oil pocket, the oil volume in the outer oil pocket, and/or the oil volume moving between the outer oil pocket and the inner oil pocket to obtain the oil volume data;

The power unit is controlled according to the depth value, the velocity value in the vertical direction, the position parameter of the seawater layer and the oil volume data.

A buoy control method for marine profile measurement including the control method of the seacline position parameter is specifically:

Measuring the temperature data and/or salinity data of the seawater at the position where the buoy is located and calculating the seacline position parameters of the current buoy according to the temperature data and/or salinity data, specifically including,

record historical data of temperature and/or historical data of salinity of seawater measured by the buoy;

Measuring current data of temperature and/or current data of salinity of seawater measured by the buoy;

Calculate the rate of change of temperature and/or salinity;

judging whether the current position of the buoy enters the seacline position according to the rate of change of the temperature and/or salinity;

If the buoy enters the seacline, the power unit is controlled to drive the inner oil bag so that the oil in the inner oil bag enters the outer oil bag.

A buoy control method for ocean profile measurement including the control method of ocean current velocity detection is specifically:

causing the buoy to descend from a first position at a first vertical velocity to a second position at a predetermined depth;

causing the buoy to hover above the predetermined depth for a predetermined time, and move to a third position with the ocean current;

causing the buoy to ascend from a predetermined depth to a fourth position at a second vertical velocity;

measuring a distance between said first location and said fourth location;

determining the ocean current at the predetermined depth based on the first vertical velocity, the predetermined depth, the predetermined time, the second vertical velocity, and the distance between the first location and the fourth location speed.

The ocean current velocity at the predetermined depth h is:

Among them, h is the predetermined depth, v _h is the ocean current velocity at the predetermined depth h, v _AB is the linear velocity of the buoy from the first position to the second position, and v _vAB is the velocity of the buoy from the first position to the second position Velocity in the vertical direction, v _CD is the linear velocity of the buoy from the third position to the fourth position, v _vCD is the speed in the vertical direction of the buoy from the third position to the fourth position, t _AD is the buoy The movement time from the first position to the fourth position, L _AD is the linear distance from the first position to the fourth position.

The utility model adopts the above-mentioned technical scheme to realize the self-adaptive adjustment of the profile buoy to float up and down, realize the purpose of finely measuring seawater parameters, and specifically connect the inner oil bag and the outer oil bag to realize the up-floating and diving of the profile buoy, Furthermore, the self-adaptive requirement of the profile buoy is realized through the volume measurement unit and the control unit. In addition, the detection of ocean current velocity is realized by controlling the profile buoy at four different positions on the ocean profile, which makes up for the lack of traditional profile buoys in the detection of ocean current velocity parameters.

Description of drawings

Figure 1 is a structural schematic diagram of a profile buoy;

Fig. 2 is the motion state diagram of the buoy in the ocean for calculating the ocean current velocity profile;

Fig. 3 is a logic diagram of the control unit;

Fig. 4 is the hydraulic oil circuit diagram among the embodiment 1;

Fig. 5 is the hydraulic oil circuit diagram among the embodiment 2;

Fig. 6 is a diagram of the power unit and hydraulic oil circuit in Embodiment 3.

In the figure, 1. Antenna, 2. Outer oil bag, 3. Pressure transmitter, 4. Inner oil bag, 5. Control board, 6. Positioning communication module, 7. Piston pump, 8. Motor, 9. Linear Displacement sensor, 10, solenoid valve A, 11, solenoid valve B, 12, solenoid valve C, 13, solenoid valve D, 14, flow meter, 15, hydraulic booster, 16, two-way gear pump, 17, overflow valve , 18, operation unit A, 19, operation unit B, 20, operation unit C, 21, analysis unit, 22, temperature, salt and depth sensor, 23, upper end cover, 24, cylinder body, 25, lower end cover.

Detailed ways

In order to clearly illustrate the technical features of this solution, the utility model will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1-6, an ocean profiling buoy comprising,

The housing, the housing is composed of an upper end cover 23, a cylinder body 24 and a lower end cover 25, and a sealing ring is arranged between the upper end cover 23, the lower end cover 25 and the cylinder body 24 to realize the purpose of sealing, and the housing is arranged as The three parts are easy to disassemble and easy to maintain. An outer oil bag 2 arranged outside the casing, specifically, the outer oil bag 2 is arranged on the outer wall of the upper part of the cylinder 24, and the outer oil bag 2 is arranged on the upper part of the cylinder 24 can overcome the problem of insufficient self-priming force of the plunger pump 7 . The outer oil bag 2 forms a ring around the periphery of the cylinder 24, and an inner oil bag 4 is arranged in the housing. Specifically, the inner oil bag 4 is arranged at the upper part of the cylinder 24, which can also compensate for the self-priming force caused by the insufficient pressure of the plunger pump 7. Insufficient problem. At the same time, the inner oil bag 4 is arranged in a bellows shape, and one end of the bellows-shaped inner oil bag 4 communicates with the outer oil bag 2 through a power unit; the other end is connected with a volume measurement unit, and the volume measurement unit changes the volume of the inner oil bag 4 The signal is transmitted to the control unit, and the control unit processes, analyzes and controls the change of the oil volume in the inner oil bag 4 and the outer oil bag 2 by the power unit to realize the floating and diving of the profile buoy.

Further, in this embodiment, an antenna 1 capable of transmitting signals is provided on the upper end cover 23 of the casing, and the antenna 1 can transmit the parameter data detected by the profile buoy to a scientific research ship or a shore-based receiving station.

Further, the power unit mentioned above specifically includes a motor 8 arranged at the inner bottom of the cylinder body 24, and a plunger pump 7 driven by the motor 8, and the plunger pump 7 connects the inner oil bag 4 and the The outer oil bag 2 is connected, and the plunger pump 7 drives the inner oil bag 4 so that the oil moves between the inner oil bag 4 and the outer oil bag 2;

Further, as shown in FIG. 4 , the above-mentioned hydraulic oil circuit specifically includes two sets of solenoid valves connected to both ends of the plunger pump 7 through oil pipes, that is, the first solenoid valve group and the second solenoid valve group. The first solenoid valve group specifically includes a solenoid valve A10 and a solenoid valve C12 connected to one end of the plunger pump 7 ; the second solenoid valve group specifically includes a solenoid valve B11 and a solenoid valve D13 connected to the other end of the plunger pump 7 . The solenoid valve A10 and the solenoid valve B11 are connected to the outer oil bag 2 through the pressure transmitter 3 arranged in the barrel 24 ; the solenoid valve C12 and the solenoid valve D13 are connected to the inner oil bag 4 . It specifically realizes the movement of oil in the oil circuit of floating and diving as follows:

When the profile buoy floats up, the solenoid valve B11 and solenoid valve C12 are closed (solenoid valve A10 and solenoid valve D13 are normally open), the motor 8 drives the plunger pump 7, and the oil in the inner oil bag 4 passes through the solenoid valve C12 and flows through the plunger The pump 7 enters the outer oil bag 2, the volume of the outer oil bag 2 increases, the buoyancy of the section buoy increases, and the section buoy floats up.

When the profile buoy dives, the solenoid valve A10 and solenoid valve D13 are closed (solenoid valve B11 and solenoid valve C12 are normally open), the motor 8 drives the plunger pump 7, and the oil in the outer oil bag 2 enters the solenoid valve A10, and the solenoid valve A10 Flowing through the plunger pump 7 into the inner oil bag 4, the volume of the inner oil bag 4 increases, the buoyancy on the profile buoy decreases, and the profile buoy dives.

Further, the volume measurement unit is suitable for measuring the volume of oil in the inner oil bag 4, as shown in Figure 1 of this embodiment, the volume measurement unit can use a linear displacement sensor 9, the linear displacement sensor 9 One end is fixed to one end of the bellows-shaped inner oil bag 4 , and the other end is connected to the other end of the bellows-shaped inner oil bag 4 . In this way, the increase or decrease of the oil volume in the inner oil bag 4 is embodied in the elongation and shortening of the length of the bellows, the expansion and contraction of the bellows drives the expansion and contraction of the linear displacement sensor 9, and the linear displacement sensor 9 transmits the displacement signal to the control unit , the control unit controls the motor 8 and the plunger pump 7, and then controls the suction and discharge of the inner oil bag 4.

Further, the control unit is connected with the power unit, the control unit receives the data measured by the volume measurement unit and controls the power unit to drive the inner oil bag 4 . As shown in accompanying drawing 1 and accompanying drawing 3, described control unit specifically comprises the control panel 5 that is arranged in the casing and positioning communication module 6, and the computing unit A18 that receives linear displacement sensor 9 signals is respectively arranged on the control panel 5, The calculation unit B19 and the calculation unit C20; the calculation unit A18, the calculation unit B19 and the calculation unit C20 are connected to the analysis unit 21 at the same time, and the analysis unit 21 specifically controls the power unit to drive the inner oil bag 4, which is specifically reflected in the buoyancy of the profile buoy to realize the profile buoy. Up and down.

Further, the above-mentioned measurement unit specifically includes a temperature-salt-depth measurement unit for measuring seawater temperature and salt-depth data, and the temperature-salt-depth measurement unit is connected to the control unit; the temperature-salt-depth measurement unit specifically adopts a The sensor 22 and the temperature, salt and depth sensor 22 are arranged outside the cylinder body 24. The temperature, salt and depth sensor 22 is specifically connected to the computing unit C20 on the control board 5 in the control unit, and the computing unit C20 receives the signal from the temperature, salt and depth sensor 22 and transmits the signal to Analysis unit 21, the analysis unit 21 receives data to determine whether the profile buoy has entered the oceanic layer, if so, controls the power unit, and the power unit then drives the inner oil bag 4 to enter the oil in the inner oil bag 4 into the outer oil bag 2 to increase the profile buoy buoyancy, increase the sampling frequency at the oceanic layer, and achieve the purpose of fine measurement.

Further, the above-mentioned measurement unit also includes a pressure measurement unit for measuring oil pressure, the pressure measurement unit specifically adopts a pressure transmitter 3 or a pressure gauge, and the pressure transmitter 3 or pressure gauge is set on the solenoid valve A10 , Between the solenoid valve B11 and the outer oil bag 2, the pressure transmitter 3 or the pressure gauge is specifically connected to the computing unit B19 on the control board 5 on the control unit, and the computing unit B19 receives the pressure signal from the pressure transmitter 3 or the pressure gauge It is transmitted to the analysis unit 21, and the oil pressure signal is processed by the analysis unit 21 to obtain the depth of the position of the profile buoy, and provide the required data for the ocean current velocity.

Further, the measurement unit described above also includes a displacement measurement unit for measuring displacement. The displacement measurement unit specifically adopts a positioning communication module 6 or a GPS locator to measure the horizontal displacement of the ocean profile buoy. The positioning communication module 6 or The GPS locator is connected to the control unit, and the control unit receives the positioning communication module 6 or the displacement signal measured by the GPS locator for further processing and calculation to provide data for calculating the ocean current velocity.

In one embodiment, the volume measurement unit includes a flow meter 14, as shown in Figure 5, the flow meter 14 is arranged in the pipeline connecting the inner oil bag 4 and the outer oil bag 2, Specifically, it is arranged between the outer oil bag 2 and the pressure transmitter 3 .

In one embodiment, as shown in FIG. 6 , the power unit can also specifically include a relief valve 17 and a hydraulic pressure booster in the pipeline connecting the inner oil bag 4 and the outer oil bag 2 15;

In one embodiment, the hydraulic pump shown in FIG. 6 adopts a bidirectional gear pump 16 .

A buoy control method for ocean profile measurement. The buoy includes a casing, an outer oil bag 2 arranged outside the casing, and an inner oil bag 4 arranged inside the casing. The inner oil bag 4 is connected to the outer oil bag. The oil bag 2 is communicated through a hydraulic oil circuit; a power unit, the power unit is drivingly connected to the inner oil bag 4, and the power unit is suitable for driving the inner oil bag 4 so that the oil in the inner oil bag 4 and the outer oil bag 2, the control method includes the following steps:

Measuring the pressure data of the oil and calculating the depth value and the vertical speed value of the current buoy according to the pressure data;

Measuring the temperature data and/or salinity data of the seawater measured at the position of the buoy and calculating the seacline position parameter of the current buoy according to the temperature data and/or salinity data;

According to the displacement data of the linear displacement sensor 9, measure the oil volume in the inner oil bag 4, the oil liquid volume in the outer oil bag 2, and/or the oil liquid volume in the outer oil bag 2 and the inner oil bag The oil volume moved between 4 to obtain the oil volume data;

The power unit is controlled according to the depth value of the buoy, the velocity value in the vertical direction, the position parameter of the seawater layer and the oil volume data.

The above-mentioned control method includes the control method of the seacline position parameter and is specifically as follows:

The temperature, salinity and depth sensor 22 measures the temperature data and/or salinity data of the seawater at the position of the buoy and calculates the current buoy's seacline position parameters according to the temperature data and/or salinity data, specifically including,

record historical data of temperature and/or historical data of salinity of seawater measured by the buoy;

Measuring current data of temperature and/or current data of salinity of seawater measured by the buoy;

Calculate the rate of change of temperature and/or salinity;

judging whether the current position of the buoy enters the seacline position according to the rate of change of the temperature and/or salinity;

If the buoy enters the seacline position, the control unit controls the motor 8 to reduce its rotating speed, so that the amount of oil in the inner oil bag 4 entering the outer oil bag 2 is less, and the floating speed of the profile buoy is controlled to make it Increase the parameter acquisition density at the position of the seawater layer to improve the accuracy.

The above-mentioned control method also includes the control method of ocean current velocity detection, as shown in accompanying drawing 2, is specifically:

causing the buoy to descend from a first position A to a second position B at a predetermined depth h at a first vertical velocity v _vAB ;

Controlling the hovering of the buoy at the predetermined depth h for a predetermined time t _BC , and moving to the third position C with the ocean current;

causing the buoy to float up from a predetermined depth h to a fourth position D at a second vertical velocity _vvCD ;

measuring the distance between the first position A and the fourth position D as L _AD ;

According to the first vertical speed v _vAB , the predetermined depth h, the predetermined time t _BC , the second vertical speed v _vCD and the distance between the first position A and the fourth position D The distance determines the ocean current velocity v _h at said predetermined depth.

The calculation formula of the ocean current velocity at the predetermined depth h is as follows:

According to the time relationship, the equation can be listed as:

Therefore, the average velocity v _h of the ocean current at water depth h can be obtained:

When measuring the shallow ocean current velocity over a long voyage, that is, when L _AD ＞＞h, there are:

When measuring the current velocity in the deep ocean, that is, when L _AD ～h, the velocity in the vertical direction of the profile buoy can be controlled so that v _AB ～v _vAB and v _CD ～v _vCD , have

Among them, L _AD and t _AD can be measured by the positioning communication module 6, v _vAB and v _vCD can be calculated by the data measured by the pressure transmitter 3, h can be measured by the temperature, salt and depth sensor 22, so that the ocean current can be realized average speed solution.

Among them, it is assumed that v _AB is the linear velocity of the buoy from the first position to the second position, v _CD is the linear velocity of the buoy from the third position to the fourth position, and t _AD is the linear velocity of the buoy from the first position to the fourth position exercise time.

Example 2:

As shown in Figure 5, this embodiment is a replacement for the linear displacement sensor 9 in Embodiment 1. Specifically, the linear displacement sensor 9 is replaced by a flow meter 14. The specific connection and oil circuit control are as follows:

The flowmeter 14 is installed between the outer oil bag 2 and the pressure transmitter 3 or in the pipeline between the inner oil bag 4 and the outer oil bag 2 .

When the profile buoy floats up, the solenoid valve B11 and solenoid valve C12 are closed (solenoid valve A10 and solenoid valve D13 are normally open), the motor 8 drives the plunger pump 7, and the oil in the inner oil bag 4 passes through the solenoid valve C12 and flows through the column in turn. The plug pump 7, solenoid valve B11, pressure transmitter 3 and flowmeter 14 enter the outer oil bag 2, the volume of the outer oil bag 2 increases, the buoyancy of the profile buoy increases, and the profile buoy rises.

When the profile buoy is submerged, solenoid valve A10 and solenoid valve D13 are closed (solenoid valve B11 and solenoid valve D13 are normally open), the motor 8 drives the plunger pump 7, and the oil in the outer oil bag 2 flows through the flow meter 14, pressure The transmitter 3 enters the solenoid valve A10, and the solenoid valve A10 flows through the plunger pump 7 and enters the inner oil bag 4, the volume of the inner oil bag 4 increases, the buoyancy on the profile buoy decreases, and the profile buoy dives.

The flowmeter 20 used can directly measure the volume of the hydraulic oil in the outer oil bag 2 or the variation between the inner oil bag 4 and the outer oil bag 2 .

Example 3:

As shown in Figure 6, in this embodiment, the plunger pump 7 in the power unit in Embodiment 1 is replaced by a two-way gear pump 16, and a hydraulic pressure booster 15 and a relief valve 17 are added to the hydraulic oil circuit, specifically The connection mode and oil circuit control are as follows:

The above-mentioned motor 8 is driven and connected with a two-way gear pump 16, and the two ends of the two-way gear pump 16 are respectively connected with a relief valve 17 and a one-way valve. The relief valve 17 can protect the hydraulic oil circuit from pressure in the hydraulic oil circuit. Too large to destroy the work of the entire power unit; the two ends of the two-way gear pump 16 are also connected with the inner oil bag 4 and the outer oil bag 2, and the hydraulic booster 15 is connected between the outer oil bag 2 and the two-way gear pump 16, and the two-way gear pump 16 and hydraulic booster 15 can solve the problem of insufficient self-priming force that plunger pump 7 exists. The oil circuit control of the hydraulic system is as follows:

When the profile buoy floats up, the motor 8 drives the two-way gear pump 16, the oil in the inner oil bag 4 enters the hydraulic booster 15 through the two-way gear pump 16, and the oil output from the hydraulic booster 15 enters the outer oil bag 2, The volume of the outer oil bag 2 increases, the buoyancy of the profile buoy increases, and the profile buoy floats up.

When the profile buoy dives, the motor 8 drives the two-way gear pump 16, and the oil in the outer oil bag 2 flows through the pressure transmitter 3, the one-way valve and the two-way gear pump 16 and enters the inner oil bag 4, and the inner oil bag 4 The volume increases, the buoyancy on the profile buoy decreases, and the profile buoy dives.

The above-mentioned specific implementation manners cannot be regarded as limitations on the protection scope of the present utility model. For those skilled in the art, any alternative improvements or transformations made to the embodiments of the present utility model fall within the protection scope of the present utility model.

The parts of the utility model that are not described in detail are the known techniques of those skilled in the art.

Claims (6)

1. A marine profiling buoy, characterized in that, comprising, a housing, at least one outer oil bladder disposed outside the housing, and at least one inner oil bladder disposed within the housing, the inner oil bladder communicating with the outer oil bladder; a power unit drivingly connected to the inner oil bladder, the power unit being adapted to drive the inner oil bladder to move oil between the inner oil bladder and the outer oil bladder; A volume measurement unit adapted to measure the volume of oil in the inner oil bladder, the volume of oil in the outer oil bladder, and/or between the outer oil bladder and the inner oil bladder The volume of oil moved between; A control unit, the control unit is connected with the power unit, the control unit receives the data measured by the volume measurement unit and controls the power unit to drive the inner oil bag. 2. The buoy of claim 1, further comprising, A temperature, salt and depth measurement unit for measuring seawater temperature and salt depth data, the temperature and salt depth measurement unit is connected to the control unit; and/or a pressure measuring unit for measuring oil pressure, said pressure measuring unit being connected to said control unit; and/or A displacement measurement unit for measuring displacement, the displacement measurement unit is connected with the control unit. 3. The buoy of claim 1, wherein: The power unit includes a hydraulic pump, and the hydraulic pump is respectively connected to the inner oil bag and the outer oil bag through pipelines; The inner oil bag and the outer oil bag are arranged above the hydraulic pump. 4. The buoy of claim 1, wherein: The inner oil bag is a bellows-shaped oil bag; The volume measurement unit includes a linear displacement sensor, which is suitable for measuring the length of the bellows-shaped inner oil bag and then calculating the volume of oil in the inner oil bag. 5. The buoy of claim 1, wherein: The volume measurement unit includes a flow meter, and the flow meter is arranged in a pipeline connecting the inner oil bag and the outer oil bag. 6. The buoy of claim 3, further comprising, A relief valve and a hydraulic booster arranged in the pipeline connecting the inner oil bag and the outer oil bag; The hydraulic pump is a two-way gear pump.