426 results about "Marine currents" patented technology

The invention discloses a polar region sea area ice area route dynamic planning method based on multi-source data, and the method comprises the following steps: obtaining sea ice, ocean current and wind field historical data of a target channel sea area, and carrying out the preprocessing; inputting a preprocessing result into a constructed sea ice forecasting model to obtain a sea ice concentration and sea ice thickness distribution forecasting result of a planning day; combining the forecast result with ocean current and wind field forecast data, and utilizing a pre-established random forest navigational speed reasoning model to obtain target channel sea area planning daily navigational speed space distribution data; and carrying out route planning with minimum time cost through an improved A * algorithm to obtain a dynamic planning result of the target channel sea area route. The invention relates to the technical field of ship navigation in a sea ice area, and relates to the technical field of ship navigation in the sea ice area, a polar sea area navigation speed background field is deduced according to a fitting relationship through random forest modeling and fitting of the relationship between the navigation speed and sea ice, ocean current and a wind field, and dynamic route planning with minimum time cost is carried out.

The invention relates to the field of ocean current remote sensing, and relates to a vector flow inversion method combining a single-station ground wave radar and a satellite-borne SAR, and the method mainly comprises the steps: calculating the frequency deviation of a first-order Bragg peak of the ground wave radar, carrying out the inversion of the sea surface radial flow of the ground wave radar, and carrying out the inversion of the sea surface radial flow of the SAR through employing a Doppler centroid anomaly method; interpolating a ground wave radar radial flow result to an SAR data grid through bilinear interpolation; inverting a single-station vector flow based on a ground wave radar radial flow result, projecting single-station vector flow data with high confidence coefficient to an SAR range direction, calculating a difference mean value of a projection flow velocity and an SAR radial flow velocity, and further calibrating the SAR radial flow; and combining a ground wave radar radial flow result with the calibrated SAR radial flow to invert a vector flow. According to the method, the defect of ocean current observation through a single means is overcome, high-precision inversion of the combined vector flow is achieved, and the method has important significance on ocean environment monitoring, disaster forecasting, shipping safety and the like.

The invention discloses an offshore wind power cable line fault early warning method and system, and relates to the technical field of cable line fault early warning, and the method comprises the following steps: laying a three-dimensional distributed optical fiber temperature array along an offshore wind power cable, and monitoring the cable thermal field space distribution in combination with an active acoustic dispersion imaging technology; acquiring initial evolution trajectory data of the edge high-temperature region; and on the basis of the initial evolution trajectory data, constructing a coupling relationship among the ocean current parameter, the sediment disturbance characteristic and the cable heat conduction parameter, forming an ocean current-sediment-heat conduction coupled digital twin model, and dynamically correcting a virtual scene of the cable burial depth in the model through a recursive filtering algorithm. Through combination of thermal field monitoring, digital twin modeling and intelligent intervention, accurate early warning and dynamic response of offshore wind power cable faults are realized, the operation and maintenance efficiency is improved, system self-optimization and cross-scene migration are supported, and the safety and intelligent level of cable operation are significantly enhanced.

The invention provides an ocean current interference resistant fault-tolerant control method and system for a robot multi-motor propulsion system, and the method comprises the steps: inputting the actual and expected position error and speed error of an underwater robot into a self-adaptive backstepping sliding mode path tracking controller, and obtaining the thrust needed by tracking motion; introducing a propeller weight matrix representing the fault degree of the propeller into a weighted pseudo-inverse method, optimizing the propeller weight matrix by adopting an intelligent algorithm to obtain an optimal propeller weight matrix, and performing thrust distribution on thrust required by tracking motion through the weighted pseudo-inverse method to obtain a thrust distribution result; according to the operation and thrust distribution results of the multiple motors, the parameters of all the motors are adjusted in a self-adaptive mode through a multi-motor fault-tolerant control strategy; and each motor remotely controls the underwater robot based on the parameters after self-adaptive adjustment, and obtains the actual position and speed of the underwater robot at the current moment for loop closing.

The invention discloses a real-time ocean simulation method and system based on sensing data, and relates to the technical field of ocean information engineering and intelligent sailing. A graph neural network is combined with a multi-head attention mechanism to carry out data fusion, importance of different sensors and data time steps is dynamically weighted, and real-time ocean simulation is realized. According to the method, the quality difference and missing conditions of heterogeneous data are adaptively processed, the deviation and noise influence in the fusion process are reduced, meanwhile, physical consistency constraints such as mass conservation and boundary non-penetration are introduced, the physical rationality and smoothness of an output ocean current field are guaranteed, non-physical artifacts are avoided, and the reliability and practicability of a result are enhanced; a streaming updating mechanism allows a graph structure and model parameters to be rapidly and incrementally updated when new data arrives, data processing and assimilation delay are greatly reduced, and nearly real-time ocean current forecasting is realized, which is crucial to a ship autonomous navigation system, and accurate ocean current information can be timely provided to support dynamic path planning and risk avoiding decision making.

The invention discloses a water surface unmanned ship control method and system under path tracking, and relates to the technical field of attitude control, and the method comprises the steps: building a kinetic model of a water surface unmanned ship; establishing a path tracking error equation for describing a system error of the unmanned surface ship relative to an expected path under a Serret-Frenet coordinate system; constructing a path tracking controller based on a linear active disturbance rejection controller; inputting the system error and a water surface unmanned ship control signal into a fuzzy RBF neural network, and outputting an optimal control parameter of a path tracking controller by taking minimization of the system error as a target; updating a path tracking controller according to the optimized control parameters; and re-estimating external disturbance by using the updated path tracking controller, outputting a control signal for optimizing the water surface unmanned ship, and controlling the water surface unmanned ship to advance along an expected path. According to the invention, the attitude control precision under strong ocean current and changeable weather is improved, and the path tracking precision of the water surface unmanned ship is greatly improved.

The invention discloses a vibration control method for an offshore wind turbine structure, which comprises the following steps of: a, implementing real-time multi-source data acquisition which is realized by deploying a series of sensors on the offshore wind turbine structure and in the surrounding environment so as to obtain environmental load parameters, structural response parameters and running state parameters of the offshore wind turbine; and b, inputting the acquired data into a composite environment and structure state decoupling and feature extraction module, preprocessing the acquired data by the module, and identifying an environment load spectrum in real time. According to the vibration control method for the offshore wind turbine structure, through multi-source information fusion, online system identification and self-adaptive multi-target control, broadband, multi-mode and self-adaptive suppression of vibration of the offshore wind turbine structure is achieved, and the limitation of a traditional fixed parameter damper in a complex dynamic marine environment is overcome; complex excitation sources such as wind, waves and ocean currents and the coupling effect of the excitation sources are effectively handled.

The invention relates to a target track association method in a multi-target environment. The method comprises the following steps: firstly, preprocessing a new received trace point; secondly, predicting the next position of each track by using the existing track historical information and adopting a Kalman filtering algorithm, meanwhile, adjusting a state transition matrix and a process noise covariance matrix in real time by considering factors such as ocean current and wind direction in an offshore environment, and adjusting an observation noise covariance matrix according to meteorological information; then comprehensively considering distance, speed difference and motion direction difference to calculate a correlation degree magnitude between a new receiving trace point and each predicted track position; and finally, judging whether the newly received trace point belongs to the existing target track or forms a new target by adopting a threshold judgment method according to the correlation degree value, and updating the state of the track. The method can effectively cope with multi-target intersection, observation loss and clutter interference, improves the stability of a matching result, can realize continuous tracking of a marine target, can adjust parameters according to the environment and target characteristics, and has high adaptability.

The invention discloses an ocean current extraction method and system, and relates to the technical field of data processing, and the method comprises the steps: building causal priori from SWOT satellite observation data based on a set variation assimilation system and a structural equation model; wherein the causal priori comprises a causal path and strength between wind stress forcing and ground rotation adjustment; carrying out iterative generation through a physical constraint diffusion model under the conditions of causal priori and SWOT satellite observation data, and outputting a sea surface flow field; performing multi-level interpretability verification on the causal path and the step of performing iteration generation through the physical constraint diffusion model to obtain a verification result; a verification result is fed back to the structural equation model and the physical constraint diffusion model to form closed-loop optimization, and then the optimized sea surface flow field is obtained. According to the method, iteration is carried out through the physical constraint diffusion model to generate the sea surface flow field, multi-level interpretability verification is carried out, the sea surface flow field can be optimized by utilizing the verification result, and high-resolution ocean current acquisition is realized.

The invention discloses an anti-scouring system for an offshore pile foundation, belongs to the technical field of offshore pile foundations, and can solve the problems that in the prior art, the installation difficulty is large, and the adaptability to the marine environment is poor. The system comprises a plurality of spoilers which are annularly distributed in the circumferential direction of the pile foundation. The horizontal plane projection of the spoiler is in a symmetrical sharp corner shape, the spoiler comprises a sharp corner end and a diffusion end which are opposite to each other, the sharp corner end is elastically connected with the pile foundation and can vertically swing under the action of ocean current, and the diffusion end overhangs in the direction away from the pile foundation; the center axis of the spoiler intersects with the axis of the pile foundation, and the sharp corner end is higher than the diffusion end. The spoiler is provided with two wing plates which are symmetrically distributed along the central axis of the spoiler, and the section of each wing plate on the section perpendicular to the central axis is in a concave arc shape. And a gap is formed between the diffusion ends of the adjacent spoilers. The anti-scour protection device is used for anti-scour protection of the offshore pile foundation.

The invention provides an offshore wind power pile foundation scouring real-time monitoring system which comprises an underwater camera, a rotatable scanning sonar, a single-point flow velocity meter, an acceleration sensor, a fiber grating sensor and a data processing transmission unit which are cooperatively used. Synchronous monitoring of the seabed terrain around the pile, the scour depth and range, the ocean current flow velocity and flow direction and the pile foundation vibration response acceleration signal and strain signal is achieved; the data processing and transmitting unit completes collection and fusion analysis of multi-source data and transmits a monitoring result to a land monitoring station in real time. According to the system, collaborative real-time monitoring of multi-element parameters of ocean current-scoured terrain-structural response is achieved, the dynamic evolution law of the seabed terrain is accurately mastered, a dual verification mechanism of directly detecting the scour depth by scanning sonar and inversing the scour depth by structural vibration response is adopted, the scour depth monitoring precision can be greatly improved, and the real-time performance of the system is improved. And reliable data support is provided for long-term safe operation, structural health assessment and scouring protection design of the offshore wind turbine.

The invention discloses a sediment collection and supply integrated device for offshore wind turbine pile foundation scour prevention, which is arranged around the periphery of an offshore wind turbine single pile foundation, relates to the technical field of offshore wind power engineering, and comprises an annular sand collection unit, a sand storage unit, a sand unloading unit and a sand supply guide unit which are communicated from top to bottom; the annular sand collecting unit guides sediment in ocean current to be deposited and collected, the sand storage unit receives and stores the collected sediment, and the sand unloading unit can seal a bottom outlet of the sand storage unit in an opening and closing mode; the sand supplementing guide unit directionally guides the discharged silt to the scouring pit; the mechanical triggering unit and the elastic resetting unit are used for opening and resetting the sand unloading unit. Sediment carried by ocean current is utilized, through pure mechanical passive operation, integrated self-circulation of collection, storage, triggering, release and supply of the sediment is achieved, external energy is not needed, the self-adaptive adjusting capacity is achieved, and the construction and operation and maintenance cost is remarkably reduced.

The invention provides an ultra-short baseline calibration method, device and system, and belongs to the technical field of underwater acoustic measurement, and the ultra-short baseline calibration method comprises the following steps: according to an antenna phase center position, a carrier instantaneous attitude, a distance and azimuth information at each observation moment, and installation parameters of an ultra-short baseline acoustic transducer relative to an inertial navigation system, carrying out calibration on the ultra-short baseline; establishing a distance equation between the ultra-short baseline acoustic transducer and the ultra-short baseline acoustic beacon at each observation moment; establishing a residual equation of each distance equation; and solving the residual equation through a nonlinear least square method to obtain installation parameters. According to the method, the installation parameters of the ultra-short baseline acoustic beacon can be efficiently and accurately calibrated, and the problems that beacon laying and recycling operation is complex, cost is high, the operation period is long, efficiency is low, and the beacon is prone to drifting due to the influence of ocean currents are effectively solved.

According to the current load simulation method provided by the invention, based on a pulley-counterweight system, accurate equivalent simulation of a steady-state ocean current load in a wave pool without a physical current generation capability is realized. According to the method, dependence of high-cost current making equipment is avoided, the loading direction and size can be flexibly adjusted, platform initial offset, mooring tension change and floating body low-frequency motion response characteristics caused by ocean current are effectively represented, and the completeness and accuracy of multi-working-condition environment load reproduction in a pool test are remarkably improved.

The invention relates to a steel pipe pile soil plug monitoring method for offshore pile foundation construction, and is suitable for the technical field of offshore pile foundation construction monitoring. According to the technical scheme, the steel pipe pile soil plug monitoring method for offshore pile foundation construction comprises the steps that pile body inner soil plug height information and pile body posture information collected by a pile body inner sensor are obtained, and the pile body posture information comprises the pile body inclination angle and the pile body vibration frequency; correcting height information of a soil plug in the pile body based on the pile body attitude information; based on the corrected height information of the soil plug in the pile body, the height growth rate of the soil plug in the pile body is calculated; the pile body state is judged based on the height growth rate of the soil plug in the pile body and the pile body inclination angle, and whether alarm is triggered or not is judged based on the pile body state. According to the method, the height information of the soil plug in the pile body is corrected based on the pile body attitude information, so that errors caused by inclination or vibration of the pile body under the action of waves and ocean currents are reduced, and accuracy is improved.

The invention relates to the technical field of suspended sediment dynamic monitoring, in particular to a suspended sediment dynamic change monitoring and deep sea operation scheduling optimization method, which comprises the steps of multi-source fusion data acquisition: synchronously acquiring suspended sediment concentration distribution data, three-dimensional ocean current vector data and seabed microtopography slope data of a target area; simulation of plume dynamic diffusion: inputting the acquired data into a microtopography coupled adaptive plume diffusion model to generate a plume diffusion three-dimensional space-time cloud picture in the future 6 hours; dynamic risk partition generation: performing space-time overlay analysis on the plume diffusion three-dimensional space-time cloud picture and a preset ecological sensitive area dynamic electronic fence to obtain an operation risk thermodynamic diagram; and intelligent partition scheduling execution: dynamically dividing a mining prohibited area, a buffer area and a safe area, and sending an inter-partition rotation scheduling instruction to the mining equipment group. According to the method, the spatial resolution and the aging response capability of sediment diffusion behavior prediction are improved, and a basis is provided for environmental impact assessment and ecological protection.

The invention discloses a multi-physics field coupling numerical method for simulating wave-ocean current-earthquake-seabed interaction, and relates to the technical field of ocean engineering numerical simulation, and the method comprises the following steps: model construction, load application, coupling solution, and result analysis and application. According to the method, revolutionary simulation of collaborative response of a seabed and a structure in a complex marine environment and multi-physics field high-precision bidirectional coupling of random waves, steady-state ocean currents and seismic excitation are realized by constructing a total-factor coupled high-precision numerical model, the problems of incomplete coupling dimensions and excessive model simplification of a traditional method are solved, and the method has the advantages of being high in practicability and high in reliability. According to the wave-induced seabed liquefaction simulation method, the simulation result and the actual working condition coincidence degree are remarkably improved, the frequency domain transfer function method is introduced to analyze the seabed pore pressure response, the cognitive depth and the prediction precision of the wave-induced seabed liquefaction mechanism are remarkably improved, and in addition, through efficient algorithms such as GPU parallel calculation, self-adaptive grids and frequency domain-time domain mixed solution, the wave-induced seabed liquefaction simulation method has the advantages that the wave-induced seabed liquefaction simulation precision is improved. And the calculation efficiency is greatly improved while the precision is ensured.

The invention belongs to the technical field of ocean new energy, and provides an anchor system multi-floating-body array wave flow motion response analysis method and system, and the technical scheme is that a joint simulation method of multi-body dynamics and computational fluid mechanics is adopted to carry out the comprehensive modeling and analysis of a mooring type multi-floating-body array, and the wave flow motion response analysis of the mooring type multi-floating-body array is realized. A universal joint connection structure for platform connection is designed, and an equivalent concentrated mass-spring unit is introduced to simplify modeling of a mooring chain. Joint simulation is implemented in a numerical wave generation and ocean current pool, and hydrodynamic force and structural response of the anchor system multi-floating-body array system under the steady-state ocean current and regular wave conditions is evaluated; the system studies the influence of the size of the floating ball, the weight of the mooring chain and the flow velocity on the hydrodynamic performance and the platform stability. And the performance requirements in a complex marine environment can be better met.

The application discloses a self-generating buoy for comprehensively utilizing ocean current energy, and relates to the technical field of ocean monitoring.The self-generating buoy comprises a buoy main body, a solar power generation assembly, a tidal current power generation assembly, a wave power generation assembly and an energy storage component; the buoy main body floats on the water surface; the solar power generation assembly is arranged on the upper side of the buoy main body; the wave power generation assembly is arranged on the lower side of the buoy main body; the tidal current power generation assembly can rotate around a vertical axis relative to the buoy main body and can move along the vertical direction relative to the buoy main body; the wave power generation assembly can be driven by the tidal current power generation assembly in the vertical direction, so that the floating assembly can move along the vertical direction to drive the first power generation component to move and generate power; and the energy storage component can store electric energy.The self-generating buoy for comprehensively utilizing ocean current energy can comprehensively utilize solar energy, tidal current energy and wave energy, improve the self-generating efficiency, and adapt to the changes of the tidal current in multiple directions.

The invention relates to the technical field of data processing, and discloses an ocean net cage structure determination method based on simulation optimization. The method comprises the steps that ocean current, wave and water depth data are collected through an ocean environment sensor, and a standardized parameter set is obtained through preprocessing; constructing a net cage load calculation model, and carrying out finite element stress analysis; calculating a stability index based on stress distribution, and establishing a constraint condition; establishing a multi-objective optimization function, and considering cost and strength parameters; performing global optimization by adopting a genetic algorithm to generate a candidate scheme library; and optimal parameters meeting the bearing capacity and economical efficiency requirements are screened, and a final net cage structure configuration scheme is determined. According to the method, global multi-objective optimization of the net cage structure parameters under the complex marine environment condition is realized, so that the optimal net cage structure configuration scheme meeting the requirements of structure safety, economy and engineering practicability at the same time is obtained.

The invention discloses a remote sensing and marine observation data fusion method and system based on two-dimensional variation, and relates to the technical field of marine sciences, and the remote sensing and marine observation data fusion method based on two-dimensional variation comprises the steps: obtaining marine satellite remote sensing data, extracting marine dynamic features, and obtaining marine satellite remote sensing data; constructing an ocean dynamic characteristic thermodynamic diagram as a two-dimensional observation field; the method comprises the following steps: acquiring temperature, salinity and ocean current data of different depth profiles in real time by using an ocean buoy observation network, generating a two-dimensional ocean state background field in combination with ocean historical data and a spatial interpolation method, and estimating a background error covariance matrix of the two-dimensional ocean state background field; taking the minimum difference between a two-dimensional ocean state background field and multi-source marine satellite remote sensing data and ocean buoy observation as a target, combining with a background error covariance, constructing a two-dimensional variational cost function, calculating an optimal ocean state analysis field, and obtaining spatial continuous two-dimensional ocean state optimal estimation. The method has the beneficial effect that the precision and practicability of marine environment monitoring and prediction are improved.

The invention discloses an offshore oil spill multi-source data fusion monitoring method and system based on deep learning, and the method comprises the steps: collecting remote sensing data and land-sea data of a preset region, and carrying out the preprocessing of the remote sensing data and the land-sea data; carrying out oil spill identification according to the synthetic aperture radar data to obtain a suspected oil spill area, and carrying out comparison and oil-like film removal on the suspected oil spill area according to the remote sensing data and the land-sea data to obtain an adjusted oil spill area; performing time sequence discrimination feature extraction on the remote sensing data and the land-sea data of the adjusted oil spill area to obtain an oil spill discrimination rule, and constructing a fusion monitoring function in the adjusted oil spill area according to an oil spill evaluation index; and according to the oil spill distinguishing rule and the fusion monitoring function, guiding to combine a wind field and the ocean current data to construct an offshore oil spill multi-source fusion monitoring model, inputting to-be-monitored data into the offshore oil spill multi-source fusion monitoring model, and outputting a monitoring result.

The invention discloses an enteromorpha green tide full life cycle wind action coefficient determination method, and belongs to the field of enteromorpha green tide drift prediction. The method comprises the following steps: S1, acquiring satellite remote sensing images of enteromorpha green tide in different development stages, and interpreting the satellite remote sensing images to obtain enteromorpha green tide distribution data; and / or acquiring sea drift tracking observation data of enteromorpha green tide at different development stages; s2, constructing an enteromorpha green tide short-term drift numerical model; s3, acquiring surface ocean current and sea surface wind data of the research sea area; s4, determining optimal wind action coefficients of the enteromorpha green tide in different development stages; and S5, performing quadratic polynomial fitting, establishing a wind action coefficient dynamic model suitable for the enteromorpha green tide full life cycle, and further determining an enteromorpha green tide full life cycle wind action coefficient value. According to the method, the prediction precision of the enteromorpha green tide drift path can be improved.

The provided is an improved Doppler centroid frequency estimation method for synthetic aperture radar (SAR) inversion of a 2D ocean surface current vector, including: dividing single-look complex (SLC) image data into blocks; obtaining an estimated value of the Doppler centroid frequency by using an amplitude method; obtaining an estimated value of the Doppler centroid frequency by using a phase method; selecting an estimated value that is of the Doppler centroid frequency and has optimal imaging quality as an initial estimation result; performing an iterative calculation on the initial estimation result; completing SAR inversion of a radial ocean current; and implementing a real-time 2D ocean current vector inversion based on a SAR inversion result of the radial ocean current. The method can improve imaging quality and accuracy of an estimation result of the Doppler centroid frequency, and serves as an effective supplement to an existing Doppler centroid frequency estimation method.

The invention relates to the technical field of marine hydrographic survey, and discloses a shallow sea full-profile ocean current information acquisition method based on data fusion, which comprises the following steps of: performing bidirectional dual acoustic detection on a shipborne measuring unit and a bottom-supported measuring unit, and acquiring and comparing respective acoustic channel transfer functions; the ocean current effect is quantified by analyzing symmetry breaking of the transfer function, meanwhile, channel disturbance characteristics of the water body environment are recognized, then the disturbance characteristics serve as dynamic constraints to guide data fusion, and an accompanying confidence coefficient index is generated for fused ocean current information. According to the method, an analysis core is changed from a measurement result to an acoustic channel bearing information, self-consistency verification is carried out on the measurement process while the flow velocity is obtained by analyzing the symmetry of channel response, and real flow field change and environment disturbance artifacts are distinguished from the physical principle, so that a blind area of data confidence in the prior art is avoided, and the accuracy of flow velocity measurement is improved. Measurement and diagnosis are integrated.

The invention provides a stable seawater environment monitoring device based on multi-parameter measurement, relates to the technical field of marine environment multi-parameter monitoring, and aims to solve the problems of small underwater measurement data volume, measurement accuracy and seawater sample timeliness. A seawater measurement group I is used for monitoring underwater salinity, temperature, dissolved oxygen, pH, turbidity and chlorophyll a; the second seawater measuring set monitors underwater depth and ocean current, a servo motor is installed on the inner side of the counterweight well, a seawater environment measuring assembly is installed at the lower end of the servo motor, and a cleaning and water changing assembly is installed in the middle of the seawater environment measuring assembly. Through the sound wave emission technology, seawater depth change and ocean current motion data can be accurately captured in real time, the blank of lack of the two key parameters in traditional monitoring is effectively filled up, meanwhile, the cleaning and water changing assembly not only filters biological seedlings from entering the inner side of the counterweight well, but also cleans the outer side of the seawater environment measuring assembly, and the water quality is improved. And the measured data is not influenced by attachments.

The invention discloses an omni-directional ocean current energy capturing device based on a friction nanometer generator. The omni-directional ocean current energy capturing device comprises a device shell, a base, an elastic supporting rod and a plurality of friction nanometer power generation units. A closed cavity is formed in the device shell; the two ends of the elastic supporting rod are fixedly connected with the base and the device shell. The multiple friction nanometer power generation units are evenly distributed on the inner wall of the closed cavity of the device shell in the circumferential direction. When the energy capturing device is placed in water, the device shell is suspended in the water under the traction of the base and the elastic supporting rod, and the device shell swings in a reciprocating mode under the traction of the elastic supporting rod under the driving of water flow, so that the friction layer and the first electrode layer make contact with each other in a reciprocating mode and are separated from each other. The omni-directional ocean current energy capturing device based on the friction nano-generator disclosed by the invention has the advantages of omni-directivity, simple and reliable structure and high energy conversion efficiency, and is particularly suitable for capturing and converting low-frequency and multi-directional ocean current energy in an ocean environment.

The utility model relates to a gravity-center-adjustable pile stabilizing platform and relates to the technical field of offshore wind power, in order to solve the problem that a traditional pile stabilizing platform cannot adjust the gravity center, the gravity-center-adjustable pile stabilizing platform comprises a platform body, two buoyancy tanks are arranged on one side of the platform body, the two buoyancy tanks are symmetrically arranged on one side of the platform body, and any buoyancy tank comprises a solid part and a liquid part; the liquid part is located above the solid part, a liquid cavity used for storing liquid is formed in the liquid part, a liquid inlet and a liquid outlet which are used for adjusting the liquid volume are formed in the surface of the liquid part, and a counterweight mechanism used for counterweight is arranged on the other side of the platform body. The device has the advantages that the gravity center position can be adjusted in real time according to complex and changeable environmental factors such as ocean currents and waves, the inclination or shaking phenomenon is effectively avoided, the device is suitable for various uneven seabed terrains, and the adaptability of the device to the complex ocean environment is improved.

The application discloses a sea area change monitoring method, device and equipment and a storage medium, and relates to the technical field of sea area monitoring. The method comprises the following steps: performing super-resolution reconstruction based on target sea area boundary data at a set monitoring frequency to obtain remote sensing images of the target sea area; extracting scattered planar vector patches of culture facilities from the remote sensing images; determining culture range patches of the culture facilities according to the outer convex surface boundary geometry of the midpoint element patch in the scattered planar vector patch; analyzing NetCDF sea current multidimensional data, generating format grid sets including different direction flow rates and wind speed value vector fields according to the step length of the set monitoring frequency; determining a regression coefficient map according to the spatial relationship between the different direction flow rates and the wind speed, and monitoring the culture facilities by using the regression coefficient map. The application takes into account the influence of flow rates, flow directions and wind speeds on the position distribution of the culture facilities, and can efficiently and accurately monitor the temporal and spatial changes of the culture sea area by combining the analysis of the NetCDF data.

A deep-sea platform energy self-supply apparatus and a control method therefor. The apparatus comprises a work platform (1) of the deep-sea platform, and further comprises: pontoons (2) mounted at the bottom of the work platform (1); a wave energy piezoelectric assembly (3) which is provided at the bottom of the work platform (1), moves around the periphery of the pontoons (2), and can consume wave energy and convert wave energy into electrical energy; and a marine current energy piezoelectric assembly (4) provided at the bottoms of the pontoons and capable of consuming marine current energy and converting marine current energy into electrical energy. The angles and heights of wave energy piezoelectric plates (3) and marine current energy piezoelectric plates (4) are adjustable, which can effectively improve the energy conversion efficiency and consume fluid kinetic energy during the conversion of fluid kinetic energy into electrical energy such that the amplitude of waves decreases as fluid kinetic energy decreases, thereby implementing a wave dissipation effect and facilitating the improvement of the stability of the deep-sea platform.