Submarine bubble plume imaging simulation platform and simulation method

Abstract

The present application relates to the technical field of bubble plume simulation, in particular to a submarine bubble plume imaging simulation platform and a simulation method. The platform comprises a water tank, a plume leakage simulation system, an environment simulation system and a monitoring control system. The plume leakage simulation system comprises a gas generating mechanism, a water flow generating mechanism and a jet device, and the jet device is arranged at the bottom of the water tank. The environment simulation system is arranged in the water tank. The monitoring control system is connected with the plume leakage simulation system and the environment simulation system. The submarine cold spring bubble plume shape and behavior can be simulated, and the corresponding acoustic and optical images can be collected. These data can be used to train a deep learning model to achieve the function of target detection of the plume in a real sea area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bubble plume simulation, in particular to a submarine bubble plume imaging simulation platform and a simulation method. BACKGROUND

[0002] Submarine natural gas hydrate is an extremely important natural resource, which is widely distributed in the deep sediments of global oceans. Bubble plume refers to a gas column formed by submarine natural gas hydrate decomposition and leakage into seawater, and its shape and characteristics have high nonlinearity and time variability, so its detection and identification have always been an important research direction in the field of ocean science.

[0003] At present, the identification methods of bubble plume mainly include acoustic detection, submarine in-situ detection and seismic wave detection technology. These methods have advantages and disadvantages, so in actual marine investigation, a multi-technology joint detection method is often used. With the development of deep learning, using deep learning method to detect plume target has become a trend in the future. However, due to the fact that there are few bubble plume sample images for deep learning model training and it is difficult to obtain submarine real image, these reasons greatly limit the training and application of deep learning model for bubble plume. Therefore, in order to better meet the needs of deep learning target identification and other tasks, a bubble plume simulation platform needs to be built. SUMMARY

[0004] The purpose of the present application is to overcome the above-mentioned defects existing in the prior art, and to provide a submarine bubble plume imaging simulation platform and a simulation method, which can simulate the shape and behavior of submarine cold spring bubble plume and collect corresponding acoustic and optical images. These data can be used to train a deep learning model to achieve the function of target detection of plume in real sea area.

[0005] The technical scheme of the present application is: a submarine bubble plume imaging simulation platform, comprising:

[0006] a water tank;

[0007] a plume leakage simulation system, comprising a gas generating mechanism, a water flow generating mechanism and a jet device, the jet device being arranged at the bottom of the water tank;

[0008] an environment simulation system arranged in the water tank;

[0009] a monitoring and control system connected with the plume leakage simulation system and the environment simulation system respectively.

[0010] In the present application, the gas generating mechanism comprises a gas tank and an air pump connected in sequence, a first flow meter is arranged on the gas conduit connecting the gas tank and the air pump, and a gas pressure control valve is arranged on the gas conduit connecting the air pump and the jet device.

[0011] The water flow generating mechanism comprises a seawater tank and a water pump connected in sequence, and a second flow meter and a water flow pressure control valve are arranged on a liquid conduit connecting the water pump and the jetting device.

[0012] The jetting device comprises:

[0013] a shell fixedly arranged at the bottom wall of the water tank;

[0014] a plurality of jetting modules, including a gas jetting module and a water flow jetting module, the water flow jetting module being located at the center of the shell, and the gas jetting module being arranged outside the water flow jetting module;

[0015] the bottom of the gas jetting module is connected with the gas generating mechanism, the bottom of the water flow jetting module is connected with the water flow generating mechanism, and the top of the jetting module is provided with a plurality of nozzles, the plurality of nozzles at the top of each jetting module being normally distributed.

[0016] The environmental simulation system comprises:

[0017] a pressure simulation mechanism comprising a pressure sensor and a pressure controller, which are arranged at the bottom of the water tank;

[0018] a temperature simulation mechanism comprising a temperature sensor and a temperature controller, which are arranged at the annular inner side wall of the water tank;

[0019] a seabed microtopography simulation mechanism;

[0020] a water flow simulation mechanism comprising underwater fan blades arranged on the annular inner side wall of the water tank.

[0021] The monitoring control system comprises:

[0022] a monitoring mechanism comprising a holder, a sonar and a seabed high-speed camera, the sonar and the seabed high-speed camera being arranged on the holder, and the holder being fixed to the side wall of the water tank;

[0023] a control mechanism comprising a host computer, which is connected with the monitoring mechanism, the plume leakage simulation system and the environmental simulation system, respectively.

[0024] The present application also comprises a method for simulation using the seabed bubble plume imaging simulation platform, wherein the method comprises the following steps:

[0025] S1, platform installation;

[0026] S2, platform operation, data collection of bubble plume;

[0027] S3, data saving;

[0028] S4, platform cleaning and disassembly.

[0029] In step S2, the sonar transmits a sound beam, and the position and shape of the bubble plume in the water are obtained by measuring the propagation time of the sound wave in the water and the intensity of the reflected signal. The high-speed underwater camera is used to capture the movement process and shape characteristics of the bubble plume. The acoustic data collected by the sonar and the optical images captured by the high-speed underwater camera are transmitted to the host computer.

[0030] In step S2, the data acquisition process specifically includes the following steps:

[0031] S2.1, keep the shooting angle of the sonar and the underwater high-speed camera unchanged, sample, obtain a continuous image sequence under the same shooting angle, and realize continuous observation and data acquisition of the bubble plume;

[0032] S2.2, without changing the shooting angle, change the temperature and pressure one by one, then spray through the spraying device, and collect data to obtain the acoustic images of the bubble plume under different temperatures and pressures;

[0033] S2.3, without changing the shooting angle, change the power of the air pump and the opening and closing state of the gas pressure control valve to change the speed of the sprayed gas, and collect data to obtain the images of the bubble plume under different speeds;

[0034] S2.4, change the shooting angle of the sonar and the underwater high-speed camera to obtain sample images of different positions, light, and background;

[0035] And continue to implement the conditions of step S2.2 and step S2.3 to obtain sufficient samples, so as to obtain images of the bubble plume under different shooting angles.

[0036] The beneficial effects of the present application are:

[0037] (1) Low cost: low-cost devices can be used, and simple sensors, air pumps and other equipment can be used to simulate the leakage and spraying state of the plume well;

[0038] (2) The simulation platform uses fewer devices and has a smaller volume, which is suitable for most water tanks, and components can be added or modified according to different test tasks.

[0039] (3) The simulation platform not only can simulate the leakage and spraying state of the plume, but also can collect sufficient samples for deep learning. By processing and analyzing the data generated in the simulation experiment, the relevant features and parameters of the plume can be extracted, such as size, speed, shape, etc., as well as parameters related to the fluid environment, such as temperature, pressure, salinity, etc. These data can be used to train and optimize the deep learning model, improve the accuracy and stability of the model.

[0040] In summary, the application can not only obtain sufficient acoustic data and optical image data of the bubble plume, but also provide more accurate, reliable and effective technical support for the observation, detection and application of the bubble plume. BRIEF DESCRIPTION OF DRAWINGS

[0041] Fig. 1 Fig. 1 is a structural schematic diagram of a seabed bubble plume imaging simulation platform in the application;

[0042] Fig. 2 Fig. 2 is a structural schematic diagram of a nozzle device.

[0043] In the figure: 1 gas tank; 2 gas pressure control valve; 3 air pump; 4 gas conduit; 5 first flow meter; seawater tank 6; water pump 7; water flow pressure control valve 8; liquid conduit 9; second flow meter 10; 11 jet device; 12 sand prevention net; 13 water tank; 14 support; 15 backwater pipe; 16 pressure sensor; 17 pressure controller; 18 temperature controller; 19 temperature sensor; 20 seabed sediment simulation; 21 underwater fan; 22 retainer; 23 seabed high-speed camera; 24 sonar; 25 shell; 26 water flow jetting module; 27 gas jetting module; 28 nozzle. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the specific embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0045] In the following description, specific details are set forth in order to provide a thorough understanding of the application. However, the application can be practiced in a variety of ways other than those described herein, and skilled artisans can make similar substitutions without departing from the scope of the application. Therefore, the application is not limited to the specific embodiments disclosed below.

[0046] As shown in Figs. 1-2 the seabed bubble plume imaging simulation platform described in the application includes a water tank 13, a bubble plume leakage simulation system, an environment simulation system and a monitoring control system. The environment simulation system is arranged in the water tank 13, which is used to control the pressure and temperature in the water tank and monitor the simulated bubble plume. The bubble plume leakage simulation system is used to simulate the formation of the bubble plume in the water tank. The monitoring control system is used to collect and record data. The water tank is used to accommodate simulation experiments and observe the morphology and evolution process of the bubble plume. The bottom of the water tank 13 is provided with a support 14, which supports the water tank 13.

[0047] The bubble plume leakage simulation system includes a gas generating mechanism, a water flow generating mechanism and a jet device 11, which is connected with the gas generating mechanism and the water flow generating mechanism respectively.

[0048] The gas injection mechanism comprises a gas tank 1 and an air pump 3 connected in sequence, and the gas tank 1 and the air pump 3 and the air pump 3 and the injection device 11 are connected by gas pipes 4 respectively. The gas pipe connecting the gas tank 1 and the air pump 3 is provided with a gas pressure control valve 2, and the gas pipe connecting the air pump 3 and the injection device 11 is provided with a first flow meter 5. The air pump 3 is used to pump the gas in the gas tank out and inject it into the injection device through the pipe. The first flow meter 5 is used to detect the gas flow in the gas pipe, and the gas pressure control valve 2 is used to detect and control the gas output pressure and flow in the gas pipe. The injection speed and pressure of the injection bubbles in the injection device can be controlled by the air pump and the first flow meter.

[0049] The liquid injection mechanism comprises a seawater tank 6 and a water pump 7 connected in sequence, and the water outlet of the seawater tank 6 and the water pump 7 and the water pump 7 and the injection device 11 are connected by liquid pipes 9 respectively. The water pump 7 and the liquid pipe of the injection device 11 are provided with a water flow pressure control valve 8 and a second flow meter 10. The water inlet of the seawater tank 6 is connected with the water tank 13 through the backwater pipe 15. The water pump 7 is used to pump the seawater into the injection device 11. The second flow meter 10 is used to detect the liquid flow in the liquid pipe, and the water flow pressure control valve 8 is used to detect and control the liquid output pressure and flow in the liquid pipe.

[0050] In this embodiment, as shown in Fig. 2 The injection device comprises a shell 25 and nine modules arranged in the shell, and the shell is arranged at the center of the bottom surface of the water tank. Seven small nozzles 28 are arranged in each module, and the nozzles on each module are regularly distributed in normal distribution. In this embodiment, the nozzles 28 are circular, the diameter of the nozzles is 5-10mm, and the injection speed at the nozzles is controlled at 18-20cm / s. The nozzles in this embodiment can also adopt a horn-shaped structure converging to the center to increase the focusing effect and flow rate of the bubble plume.

[0051] One of the modules is located at the center of the injection device, and the bottom of the center module is connected with the seawater tank through a liquid pipe. The seawater in the seawater tank enters the center module through the liquid pipe and is injected out through the seven nozzles at the top of the center module, realizing the simulated injection of the water flow. The module is a water flow injection module 26.

[0052] Eight modules are distributed around the module, and the bottoms of the eight modules are connected with the gas tank through gas pipes respectively. The gas in the gas tank enters the above-mentioned eight modules through the gas pipes respectively, and is injected out through the seven nozzles at the top of each module respectively, realizing the simulated injection of the gas bubbles. The above-mentioned eight modules are gas injection modules 27.

[0053] The top of the injection device in the embodiment is provided with sixty-three nozzles 28, of which seven nozzles are used for water injection, and fifty-six nozzles are used for bubble injection. The fifty-six nozzles are arranged at the periphery of the seven nozzles, so as to realize the simulation of bubble plume.

[0054] The environment simulation system comprises a pressure simulation mechanism, a temperature simulation mechanism, a seabed microtopography simulation mechanism and a water flow simulation mechanism.

[0055] The pressure simulation mechanism comprises a pressure controller 17 and a pressure sensor 16, which are arranged near the nozzles at the bottom of the water tank. The pressure sensor 16 is used to sense the pressure at the nozzles, and the pressure controller 17 is used to change the pressure at the nozzles.

[0056] The temperature simulation mechanism comprises a temperature sensor 19 and a temperature controller 18 arranged on the inner side wall of the annular water tank. The temperature sensor 19 is used to monitor the temperature change of the water in the water tank in real time, and the temperature controller 18 adjusts the water temperature in the water tank according to the temperature sensed by the temperature sensor. By means of the temperature controller 18, the water temperature in the water tank can be changed, so as to realize the simulation of the leakage behavior and characteristics of the bubble plume at different temperatures.

[0057] Since the temperature of the upper layer of water is generally higher than the temperature of the lower layer of water, and the pressure gradually increases with the increase of the depth, the temperature and the pressure of the seawater in the water tank should be decreased in a gradient. Therefore, in the embodiment, a plurality of temperature controllers 18 are symmetrically arranged on the upper part of the inner side wall of the annular water tank. The temperature controllers realize the stratification of the upper and lower temperatures in the water tank.

[0058] The seabed microtopography simulation mechanism comprises seabed sediment simulation objects 20 arranged at the bottom of the water tank. When sound waves propagate in seawater, they will be affected by various substances in the seawater, of which the sediment particles are the most easily disturbed factors. Therefore, by arranging the microtopography scene, the marine sediment particles and the sediment substances at the bottom of the water tank, the environmental disturbance during the seabed plume injection can be better simulated, the background of the optical image will be more realistic, the imaging will be closer to the actual situation, and the accuracy of the model will be increased.

[0059] The seabed microtopography includes pockmarks and seabed mounds. In the application, bottom sand, water grass mud and the like can be used to simulate marine sediments; calcareous clay layers and sulfide substances can also be used for simulation; reef, dolomite, aragonite and the like can be placed; and carbonates can be used to achieve the purpose of more realistic simulation. Since the plume injection position will cause the surrounding topography to be eroded, and thus pockmarks are generated, the terrain around the nozzle should be in a low-lying state.

[0060] The seabed sediment simulation 20 is arranged on the bottom of the water tank and above the jetting device. Therefore, the seabed sediment around the nozzle is jetted up during the jetting process of the jetting device, so as to achieve the simulation effect. Since the seabed sediment simulation 20 contains silt or sediment, the larger silt will block the nozzle. Therefore, the upper part of the jetting device is provided with a sand prevention net 12 for filtering silt particles and preventing the seabed sediment simulation 20 from affecting the nozzle device.

[0061] The water flow simulation mechanism includes an underwater fan 21 installed on the annular inner side wall of the water tank. The horizontal wind generated by the underwater fan 21 blows to the water flow, changes the flow direction of the water flow, and simulates the drifting phenomenon of the bubble plume. In the embodiment, the flow rate of the water flow is controlled to be 0.18-0.2 m / s.

[0062] The monitoring control system includes a monitoring mechanism and a control mechanism. The monitoring mechanism is used to collect the acoustic images of the bubble plume, and the control mechanism can control the working state and working parameters of the entire simulation platform and process the collected acoustic images of the bubble plume.

[0063] The monitoring mechanism includes a holder 22, a sonar 24 and a seabed high-speed camera 23. The holder 22 is fixed on the side wall of the water tank 23. The sonar 24, the lighting device and the seabed high-speed camera 23 are arranged on the holder 22. The sonar 24 can emit multiple sound beams. By measuring the propagation time of sound waves in water and the intensity of reflected signals, the position and shape of the bubble plume in water can be obtained. The seabed high-speed camera 23 is used to shoot the movement process and shape characteristics of the bubble plume. The sonar returns the collected information to the control mechanism, and the seabed high-speed camera returns the shot optical images to the control mechanism through the data line for saving. The control mechanism can obtain more detailed and accurate information and characteristics through the analysis and processing of the camera images.

[0064] The control mechanism includes a host computer connected with the monitoring mechanism, the bubble plume leakage simulation system and the environment simulation system.

[0065] The host computer is connected with the gas generating mechanism and the water flow generating mechanism in the bubble plume leakage simulation system. The air pump 3, the first flow meter 5 and the gas pressure control valve 2 in the gas generating mechanism are respectively electrically connected with the host computer. The water pump 7, the second flow meter 10 and the water flow pressure control valve 8 in the water flow generating mechanism are respectively electrically connected with the host computer.

[0066] The first flow meter collects the gas flow in the gas conduit and transmits it to the host computer. The host computer controls the gas flow and pressure in the gas conduit by controlling the power of the air pump and the opening state of the gas pressure control valve. The second flow meter collects the liquid flow in the liquid conduit and transmits it to the host computer. The host computer controls the liquid flow and pressure in the liquid conduit by controlling the power of the water pump and the opening state of the water flow pressure control valve. By controlling the gas and liquid flow speed and pressure, the control and adjustment of the bubble plume jet speed and pressure are realized.

[0067] The host computer is connected to the pressure simulation mechanism, temperature simulation mechanism and water flow simulation mechanism in the environment simulation system. The pressure sensor 16 and pressure controller 17 in the pressure simulation mechanism are respectively electrically connected to the host computer. The pressure sensor is used to detect the pressure around the nozzle and transmit it to the host computer. The host computer changes the pressure of the environment around the nozzle through the pressure controller according to the detected pressure value. The temperature sensor 19 and temperature controller 18 in the temperature simulation mechanism are respectively electrically connected to the host computer. The temperature sensor is used to detect the temperature in the water tank and transmit it to the host computer. The host computer controls the temperature in the water tank through the temperature controller according to the detected temperature value. The underwater fan 21 in the water flow simulation mechanism is electrically connected to the host computer. The host computer changes the speed of the underwater fan to change the flow rate of the water in the water tank. By changing the pressure and temperature values in the water tank through the host computer, the environment in the water tank is changed to simulate the influence of different environmental changes on the sample.

[0068] The present application also includes a method for simulation using the above simulation platform, comprising the following steps.

[0069] First, install the platform.

[0070] Connect the plume leakage simulation system and the environment simulation system, and install them in the corresponding positions of the water tank to ensure the flow and circulation of water in the entire simulation platform. Connect the sensors and monitoring control system to realize real-time data acquisition and processing. Assemble and install the sonar and underwater high-speed camera at the designated position. The underwater high-speed camera needs to be equipped with a light source to obtain clear plume images and is fixed on a holder. Through the sonar and underwater high-speed camera, the sound wave signal and image of the bubble plume are observed in real time. Connect seawater into the water tank and place some obstacles and marine sediments on the bottom of the water tank to simulate the real plume jet environment.

[0071] The gas tank is connected to each gas injection module to ensure that the air pump and gas pressure control valve can work normally. The gas injection module is used to simulate the injection of bubbles. The seawater tank is connected to the water flow injection module to ensure that the water pump and water flow pressure control valve can work normally. The water flow injection module is used to simulate the injection of water flow.

[0072] Second, the platform runs, and data of the bubble plume is collected.

[0073] The gas pump is turned on to extract the gas in the gas tank, and the water pump is turned on to extract the seawater in the seawater tank, to simulate the leakage and injection of bubbles mixed with seawater. After the injection device starts to inject, the flow rate and flow velocity of the bubbles need to be constantly monitored and adjusted. According to the data returned by the pressure sensor and the temperature sensor, the pressure controller and the temperature controller are used to adjust the environment in the water tank to the required pressure and temperature for starting the leakage and injection of bubbles, and the corresponding parameters are recorded.

[0074] In this embodiment, by controlling the size of the water flow, the injection flow rate is controlled to be 1000 ml / min, 2000 ml / min, and 3000 ml / min, respectively, and the state of bubble injection is matched.

[0075] Because the injection speed of the plume is different at different depths of the seabed, the shape also has a big difference, and different pressures and temperatures also have an impact on the imaging of the sonar. Therefore, according to the experimental requirements, the temperature and pressure of different simulation fluids are adjusted to achieve the purpose of rich samples. For example, in the simulation of the seabed 10 meters, the temperature is adjusted to about the temperature of seawater, and the pressure is adjusted to about 1.1 atm. In the simulation of the seabed 50 meters, the temperature is adjusted to about 5-6° of the temperature of seawater, and the pressure is adjusted to about 6 atm. In the simulation of the seabed 100 meters, the temperature is adjusted to about 3-4° of the temperature of seawater, and the pressure is adjusted to about 11 atm.

[0076] The sonar and the seabed high-speed camera are used for sampling. The sonar can detect and record the acoustic signals of the bubble plume in the water in real time, and then reflect the shape, evolution and transmission process of the bubble plume; and the seabed high-speed camera can record important features such as the shape, size and motion trajectory of the bubble plume in real time, to realize all-around and multi-angle observation and data collection of the bubble plume.

[0077] The collection process specifically includes the following steps.

[0078] (1) Keep the shooting angle of the sonar and the seabed high-speed camera unchanged, and sample. In this way, continuous image sequences under the same shooting angle can be obtained, to realize continuous observation and data collection of the bubble plume.

[0079] (2) Because the pressure and temperature have an impact on acoustic imaging, in order to obtain different acoustic images under different temperatures and pressures, the temperature and pressure are changed one by one without changing the shooting angle, and then the injection device is injected, and data is collected. In this way, acoustic images of the bubble plume under different temperatures and pressures can be obtained.

[0080] (3) In order to simulate the different imaging caused by different jet velocity of the plume, the power of the air pump and the opening and closing state of the gas pressure control valve are changed to change the jet gas speed without changing the shooting angle, and the data are recorded. In this way, the images of the bubble plume at different speeds can be obtained.

[0081] (4) The shooting angle of the sonar and the underwater high-speed camera is changed to obtain sample images of different positions, light, and background. And the conditions of steps (2) and (3) are continued to be implemented so as to obtain sufficient samples. In this way, the images of the bubble plume at different shooting angles can be obtained.

[0082] Step 3, data saving.

[0083] The sample data collected and photographed by the sonar and the underwater high-speed camera are transmitted to the host computer through the data transmission line. These data can include acoustic signals, image sequences and various forms of data, which are preprocessed and standardized by the host computer for subsequent data analysis and training of the target detection model using deep learning.

[0084] Step 4, platform cleaning and disassembly.

[0085] After the bubble plume simulation experiment is performed, in order to ensure the normal operation of the equipment next time, the air pump and the pressure pump and other equipment need to be disassembled, and the equipment needs to be cleaned and maintained, and the experimental site needs to be cleaned and the experimental equipment needs to be dried.

[0086] The above describes in detail the submarine bubble plume imaging simulation platform and the simulation method provided by the present application. In this paper, specific examples are applied to explain the principles and implementation modes of the present application. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the present application. The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A seabed bubble plume imaging simulation platform, characterized in that, The simulation platform comprises a water tank, a plume leakage simulation system, an environment simulation system, and a monitoring control system. The plume leakage simulation system comprises a gas generating mechanism, a water flow generating mechanism, and a jet device arranged at the bottom of the water tank. The environment simulation system is arranged in the water tank. The monitoring control system is connected with the plume leakage simulation system and the environment simulation system respectively. The jet device comprises a shell fixedly arranged at the bottom wall of the water tank, and a plurality of jet modules including a gas jet module and a water flow jet module. The bottom of the gas jet module is connected with the gas generating mechanism, and the bottom of the water flow jet module is connected with the water flow generating mechanism. The top of each jet module is provided with a plurality of nozzles, and the plurality of nozzles on the top of each jet module are normally distributed. The monitoring control system comprises a monitoring mechanism and a control mechanism. The monitoring mechanism comprises a holder, a sonar, and a seabed high-speed camera, and the sonar and the seabed high-speed camera are arranged on the holder. The control mechanism comprises a host computer connected with the monitoring mechanism, the plume leakage simulation system, and the environment simulation system.

2. The seabed bubble plume imaging simulation platform according to claim 1, wherein the gas generating mechanism comprises a gas tank and an air pump connected in sequence.

3. The seabed bubble plume imaging simulation platform according to claim 1, wherein the water flow generating mechanism comprises a seawater tank and a water pump connected in sequence. The environment simulation system comprises a pressure simulation mechanism, a temperature simulation mechanism, a seabed microtopography simulation mechanism, and a water flow simulation mechanism. The pressure simulation mechanism comprises a pressure sensor and a pressure controller arranged at the bottom of the water tank. The temperature simulation mechanism comprises a temperature sensor and a temperature controller arranged at the annular inner side wall of the water tank. The seabed microtopography simulation mechanism comprises a seabed microtopography simulation mechanism.

4. The seabed bubble plume imaging analog platform of claim 1, wherein, The water flow simulation mechanism comprises underwater fan blades arranged on the annular inner side wall of the water tank. The simulation method comprises the following steps: S1, platform installation; S2, platform operation, and data acquisition of the bubble plume; S3, data saving; 5. A method of simulating using the seabed bubble plume imaging simulation platform of any one of claims 1-4, wherein, S4, platform cleaning and disassembly.

6. The seabed bubble plume imaging simulation method according to claim 5, wherein in step S2, the sonar emits a sound beam, and the position and shape of the bubble plume in the water are obtained by measuring the propagation time of the sound wave in the water and the intensity of the reflected signal.

7. The seabed bubble plume imaging simulation method according to claim 5, wherein in step S2, the data acquisition process comprises the following steps: S2.1, keeping the shooting angle of the sonar and the underwater high-speed camera unchanged, sampling, obtaining a continuous image sequence under the same shooting angle, and realizing continuous observation and data acquisition of the bubble plume. ​ ​ ​ ​ ​ ​ S2.2, change the temperature and pressure one by one without changing the shooting angle, then spray through the spraying device and collect data to obtain the acoustic images of the bubble plume under different temperatures and pressures; S2.3, change the power of the air pump and the opening and closing state of the gas pressure control valve to change the speed of the sprayed gas without changing the shooting angle, and collect data to obtain the images of the bubble plume under different speeds; S2.4, change the shooting angle of the sonar and the underwater high-speed camera to obtain sample images of different positions, light and background; And continue to implement the conditions of step S2.2 and step S2.3 to obtain sufficient samples to obtain images of the bubble plume under different shooting angles.

Images