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39 results about "Ocean wave height" patented technology
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Three-dimensional ocean wave analogy method based on ocean wave spectrum
The invention discloses a three-dimensional ocean wave analogy method based on an ocean wave spectrum. The three-dimensional ocean wave analogy method based on an ocean wave spectrum includes confirming an observation time t and obtaining an ocean wave height at the moment, taking a relative calm moment of the ocean surface before the observation time t as an observation time 0 and obtaining an ocean wave height at the moment, deducing a relative correlation function of ocean waves based on considering the formation time history of the ocean waves and obtaining an attenuation weight function of the ocean waves through calculation, multiplying the ocean wave height of the observation time 0 by the attenuation weight function and superposing the result to the ocean wave height of the observation time t thus reflecting the influence of a previous moment ocean wave on the ocean wave of an observation time, changing an angle initial phase of an orientation spectral function of superposed ocean waves to imitate the changes of wind directions. Repeat the steps of the three-time dimensional ocean wave analogy method, and ocean superpositions of a plurality of moments are obtained and finally the imitation of ocean waves is obtained. The three-dimensional ocean wave analogy method based on ocean wave spectrum utilizes the steps to imitate the ocean waves. The imitated effect of the ocean waves is less in distortion compared with the prior art and fits with real ocean waves.
Owner:SHANGHAI JIAO TONG UNIV
Undulatory sea surface ghost reflection suppression method and device
The invention provides an undulatory sea surface ghost reflection suppression method and device. The undulatory sea surface ghost reflection suppression method comprises that based on an undulatory sea surface reflection coefficient calculation formula, the angular frequency, the wave number, the ocean wave height and the seawater speed which correspond to the obtained seismic data in a frequency-wavenumber domain are calculated to obtain a reflection coefficient; a white noise coefficient is obtained by calculating the angular frequency corresponding to the seismic data in the frequency-wavenumber domain; a ghost reflection suppression operator, of the frequency-wavenumber domain, corresponding to preset towing cable scanning depth is obtained by calculating the reflection coefficient and the white noise coefficient; frequency-wavenumber domain suppression data is obtained by means of the suppression operator; then the frequency-wavenumber domain suppression data is converted into time-space domain suppression data; the time-space domain suppression data is divided by a preset time window interval; the sum of absolute values of frequency domain data corresponding to the towing cable scanning depth in the same time window is worked out; and the time-space domain suppression data corresponding to the minimum sum of the absolute values serves as seismic data of the corresponding time window after ghost reflection suppression. According to the invention, undulatory sea surface ghost reflection can be effectively suppressed.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Satellite-borne laser near-coast terrain detection laser radar and detection method
PendingCN112526482AHigh measurement accuracyFast measurementWave based measurement systemsContinuous scanningTerrain
The invention provides a satellite-borne laser near-coast terrain detection laser radar and a detection method. The satellite-borne laser near-coast terrain detection laser radar comprises a laser, atransmitting optical light splitting device, a large-aperture telescope, a relay optical device, a multi-channel photoelectric detector, a laser controller, a signal acquisition and processing module,a signal conditioning and detector control module and a comprehensive controller. Parallel dual-wavelength laser emission is utilized, large dynamic detection of deep sea and shallow sea seabed echoes is achieved through large and small view field detection of 532 nm wavelength laser echoes, synchronous detection of the sea surface is achieved through 1064 nm echo detection, and therefore the near-coast seabed terrain and a water depth are accurately measured; atmospheric detection is realized through parallel dual-wavelength laser emission and polarization receiving detection; and through multi-beam laser emission and sub-view-field receiving detection, high-efficiency measurement of an ocean wave height and the near-coast land terrain is achieved, the laser radar is carried by a satellite platform, and global-scale near-coast terrain and water depth measurement can be achieved through continuous scanning in a satellite flight direction.
Owner:BEIJING RES INST OF TELEMETRY +1
Ocean wave height measuring device
InactiveCN108344402AHigh resistance to water impactGood followabilityMeasuring open water movementHigh resistanceAviation
The invention discloses an ocean wave height measuring device comprising a power switch (1), an indicator lamp (2), a charging aviation plug (3), a handle (4), a knob switch (5), an antenna (6), a pin(7), a blade (8), an upper casing (10), an O-ring rubber ring I (11), a middle casing (12), a control plate (14), an O-ring rubber ring II (15), a rechargeable battery ( 16), a lower casing (17), a foam buffer head (18), a counterweight head (19) and a transmitting module (20). The ocean wave height measuring device has high resistance to water-entry impact and has a good wave-following performance when floating freely in seawater. A six-axis inertial sensor is used for calculation and processing to obtain wave height data, and the wave height data is transmitted through the transmitting module. The problem of high-precision measurement of wave height can be solved.
Owner:AVIC SHANGHAI AERONAUTICAL MEASUREMENT CONTROLLING RES INST
Deep learning-based sea wave height prediction method and application thereof
PendingCN113051817AFew parametersFast trainingDesign optimisation/simulationNeural architecturesSea wavesData information
The invention discloses a deep learning-based sea wave height prediction method and application thereof, and the method comprises the steps: respectively inputting sea wave data information into an AM-LSTM model and a CatBoost model, obtaining and outputting P1 and P2, and reconstructing P1 and P2 according to the following formula to obtain a prediction sequence P; p = q2 * P1 + q1 * P2, w1 is the mean value of the MAE, the RMSE and the MAPE output by the AM-LSTM model, and w2 is the mean value of the MAE, the RMSE and the MAPE output by the CatBoost model. According to the sea wave height prediction method, the advantages of the LSTM in deep learning in the aspect of processing long-term data prediction, the characteristics of the attention mechanism and the characteristics of few parameters, fast training and difficult overfitting of the CatBoost are considered, the predicted data are reconstructed, the prediction precision is high, the generalization performance is high, the method is especially suitable for sea wave height prediction, and the application prospect is promising.
Owner:SHANGHAI OCEAN UNIV
Hydrofoil boat wave climbing control method
ActiveCN109398594AReduce water outputReduce water hitDesign optimisation/simulationSpecial data processing applicationsTime domainOptimal control
The invention provides a hydrofoil boat wave climbing control method and relates to the field of control strategies, specifically to a hydrofoil boat wave climbing control method. The hydrofoil boat wave climbing control method comprises the following steps of (1) establishing an ocean wave height sequence model and a predication sequence; (2) establishing a force and moment equilibrium linear equation; (3) measuring the height of a hull relative to a sea level; (4) calculating a deviation value of the hull following the waves; (5), judging hydrofoil water outlet and hull water striking situations; (6) designing a finite time-domain optimal control performance index, selecting a decision variable, calculating desired flap deflection angle needed by controlling, and controlling a longitudinal displacement height of a hydrofoil boat; and (7) repeatedly executing the whole optimizing process within an ocean wave period. According to the hydrofoil boat wave climbing control method, by forecasting an ocean wave sequence, a discrete segmental control method is designed to update control output in real time, and therefore, the hydrofoil boat tracks wave height change of a high ocean condition in time to reduce hydrofoil water outlet and hull water striking.
Owner:HARBIN ENG UNIV
Ocean wave height prediction method and system, computer equipment, storage medium, and terminal
PendingCN113722980AImprove accuracyLow costDesign optimisation/simulationNeural architecturesSea wavesEngineering
The invention belongs to the technical field of ocean wave height prediction, and discloses an ocean wave height prediction method and system, computer equipment, a storage medium, and a terminal. The method comprises the following steps: selecting a feature with a high correlation coefficient as an input feature for predicting an ocean wave height; establishing a chaos model according to particle swarm behavior characteristics to solve the problem of premature convergence of particle swarms, wherein the CDW performs optimization in an initialization stage for a BP model, and in a CPSO-BP model, a chaotic particle swarm optimization (CPSO) algorithm searches optimal particles in a solution space to optimize initial weights and threshold values of a BP network; using parameters optimized by the CPSO algorithm as initial weights and threshold values of an ELM network to be transmitted to an ELM network; carrying out wave height prediction in the ocean early warning field by using a CPSO-BP model or a CPSO-ELM model. The deep learning method is used for wave height prediction, and the method has the advantages of high accuracy, low cost and high operation speed.
Owner:OCEAN UNIV OF CHINA
Sea wave height prediction method
PendingCN113033094AImprove forecast accuracyHigh precisionDesign optimisation/simulationNeural architecturesSea wavesOcean wave height
The invention discloses a sea wave height prediction method. The prediction method comprises the following steps: carrying out VMD decomposition on an original sea wave height data sequence; inputting a plurality of discrete subsequences IMF1, IMF2,..., IMFk obtained through the VMD decomposition into an AM-LSTM model to obtain model prediction results PIMF1, PIMF2,..., PIMFk of the plurality of discrete subsequences; inputting the original sea wave height data into the AM-LSTM model to obtain a model prediction result PIMF of the original sea wave height data sequence; performing reconstruction calculation on the model prediction results PIMF1, PIMF2... PIMFk of the plurality of discrete subsequences and the model prediction result PIMF of the original sea wave height data sequence to obtain a final prediction value of the sea wave height, and evaluating the final prediction value.
Owner:SHANGHAI OCEAN UNIV
Graphical display method for marine meteorological safety early warning
PendingCN111858804AIntuitively determinedImprove work efficiencyDrawing from basic elementsVisual data miningSea wavesOcean wave height
Owner:广东省气象公共安全技术支持中心
An ocean wave power generation device with a rope structure
ActiveCN109113920BWave Sports AdaptationHigh recovery rateMachines/enginesEngine componentsWave power generationSea waves
The invention discloses a wave power generation device with a rope structure. The wave power generation device mainly comprises a machine frame assembly, a floating platform assembly, three evenly-distributed driven constraint branched chains, three rope branched chains and a hydraulic power generation system, wherein the three driven constraint branched chains are installed on the machine frame assembly and are of the same structure, and the three rope branched chains are of the same structure and are evenly distributed in the circumferential direction. Main movement of waves is converted into moving and swing of floaters, the floaters drive a rope to move, then, moving and swing are converted into rotation of a crank disc, and the wave power generation device can well adapt to wave movement, is not restricted by the wave height, and has the advantages that subjected impact force is small, the wave energy recycling rate is high, the structure is simple, the input-output ratio is low,protection performance is good, and manufacturability is good.
Owner:YANSHAN UNIV
Ocean-wave height adaptive underwater communication system for communication range-finding common optical system
ActiveCN108833022AStable breakdown positionRealize adaptive adjustmentElectromagnetic transmission optical aspectsElectromagnetic wave reradiationSea wavesClosed loop
The invention discloses an ocean-wave height adaptive underwater communication system for a communication range-finding common optical system, belongs to the field of spatial laser communication, andaims at solving problems that the adaptive adjustment of ocean waves cannot be achieved in the prior art, a laser range-finding module and a communication module are independent, the size and weight are large, and the structure is complex. The range-finding light emitted by a laser range-finding emitter and communication light emitted by a laser communication emitter are combined by a two-in-one composite optical fiber into one light source for output, and then are outputted through one common zooming system, and are finally focused at a far-field sea level or at a specified laser breakdown depth position below the sea level. The range-finding light beam is reflected by the sea surface, and the laser range-finding receives the light signal and converts the light signal into an electric signal. The electric signal is transmitted to the data processing system for calculating the height of the sea level in real time, and then the information is fed back to a controller. The controller drives the motor to change the focal length of the common zooming system, thereby adjusting the focus position of the laser range-finding light beam and the laser-excited underwater communication light beam, and forming closed-loop control.
Owner:CHANGCHUN UNIV OF SCI & TECH
Real-time sea wave segmentation method and device based on self-adaptive threshold frame difference method
The invention discloses a real-time sea wave segmentation method and device based on an adaptive threshold frame difference method. The method comprises the following steps: acquiring a moving sea wave video sequence image of a target sea area; carrying out gray scale conversion on the moving sea wave video sequence image; carrying out differential operation on two adjacent frames of the obtainedgrayscale image; generating an adaptive threshold value according to the differentiated image; and according to the adaptive threshold, carrying out threshold operation to output a final sea wave segmentation image. The method is suitable for the work of binocular vision-based sea wave height measurement and three-dimensional reconstruction. According to the method, the moving sea waves can be rapidly segmented, the consumed time is short, the effect is obvious, the method can be applied to different scenes through application of the self-adaptive threshold value, the work of resetting the threshold value under different videos is reduced, and the method is simple, easy to program and implement, low in algorithm time consumption and real-time.
Owner:深圳市若雅方舟科技有限公司
Energy collecting device for generating power through ocean energy
InactiveCN105569914AMaximize acquisitionImprove efficiencyMachines/enginesEngine componentsAuto regulationOcean wave height
The invention relates to an energy collecting device for generating power through ocean energy. The energy collecting device is characterized by comprising a wave focusing unit and a water storage pool; the wave focusing unit comprises a wave gathering plate, hinges, a driving rod, a motor, a gradient controller, a horizontal supporting frame, a sliding groove, a sliding block and a driven rod; the wave gathering plate is connected with the driving rod and the driven rod through the hinges and is located above the horizontal supporting frame, and the gradient of the wave gathering plate is controlled through the gradient controller; the driving rod is connected with the motor through a rotating shaft; and the wave gathering plate and the horizontal supporting frame form a slope way with the slope angle capable of automatically increasing and decreasing, a sliding groove is formed in one side of the horizontal supporting frame, the sliding block is connected with the driven rod through the hinge, and the sliding block slides back and forth between the left end and the right end of the sliding groove under the effect of the driven rod. Automatic adjustment can be carried out according to the on-site and real-time ocean wave height and wave length, the ocean wave energy is obtained to the maximum degree, the overall efficiency and the total output of power generation of a power generator are improved, and the energy collecting device is suitable for replacing an existing energy collecting device of an overtopping type wave power generating device.
Owner:HOHAI UNIV +1
Method for smoothing output power of direct-drive type ocean wave electric generator
InactiveCN104079222AStable output powerGuaranteed uptimeElectric generator controlPower qualityPower flow
The invention discloses a method for smoothing output power of a direct-drive type ocean wave electric generator. On the premise of conducting direct electric generation through ocean wave energy, the purpose is realized that the power output by the electric generator is enabled to be smooth and steady through the method of adjusting the current iq of a shaft q of the electric generator, instead of additionally arranging electrical energy storage devices required by a regular ocean wave electric generation system. The prediction method of ocean wave heights based on an ARMA model is introduced to the calculation process of the ocean wave energy, the magnitude of the current iq of the shaft q of the electric generator is properly adjusted according to the work efficiency of the ocean wave electric generator, so that the process of converting the ocean wave energy into electric energy is enabled to be smooth and steady, and thus it is guaranteed that the output power of the ocean wave electric generator is enabled to be smooth and steady. According to the method for smoothing the output power of the direct-drive type ocean wave electric generator, on the one hand, the electrical energy storage devices required by the regular ocean wave electric generation system are omitted, and thus input cost is greatly reduced, on the other hand, the electrical energy quality output by the ocean wave electric generation system is improved, and the operation performance of parallel grid power transmission of a direct-drive type ocean wave electric generation system is improved.
Owner:SOUTHEAST UNIV
Hydrodynamic force capturing, collecting and energy converting device
PendingCN114396351AReduce resistanceReduce intermittent window periodMachines/enginesEngine componentsSea wavesOcean wave height
The invention relates to a hydrodynamic force capturing and collecting energy conversion device which comprises a power generator and a buoy, the buoy is fixed to the periphery of the power generator, a rotating shaft is connected to the lower portion of the power generator, two sets of recovery blade sets are arranged on the rotating shaft, and recovery blade shafts are arranged on the sides, connected with the rotating shaft, of the two sets of recovery blade sets. A limiter is arranged on the other side; the buoy is connected with the sea wave chimney to form a pipeline, the height of the sea wave chimney exceeds the expected highest sea wave height, and the top of the sea wave chimney is of a U-shaped anti-backflow structure; the sea wave recovery blade device has the advantages that after the sea wave recovery blade device is installed on a pipeline, water in and out of the pipeline acts on the recovery blades, the recovery blades have the pressure reduction effect on water flow, the bottleneck effect is formed when water pressure inside and outside the pipeline changes, and the effect of delaying stable release and rectification is achieved for pipeline energy storage.
Owner:李晓明
A ghost reflection suppression method and device for undulating sea surface
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
A Method of Obtaining Light Scattering Coefficient of Sea Wave Foam with High Reality
ActiveCN108536884BRealize real-time computingReduce mistakesOpen water surveyDesign optimisation/simulationOcean wave heightEngineering
The invention relates to a method for obtaining the light scattering coefficient of sea wave foam with high realistic feeling, comprising: obtaining sea wave parameters; establishing a sea wave motion model according to the sea wave parameters to obtain the wave height field distribution; superimposing sea waves according to the sea wave height field distribution The foam distribution model is used to obtain the mixed state distribution of the sea foam; according to the mixed state distribution of the sea foam, the vector radiation transfer equation is solved to obtain the light scattering coefficient of the sea foam. The present invention starts from the construction of the wave height field, considers the influence of different sea conditions, weather conditions, different foam sizes and mixing ratios on the propagation of light in the foam, establishes the dissolution model of the wave foam in the mixed state of bubbles and water droplets, and generates the wave foam under different mixing modes The physical model of the sea foam is the mixed state distribution of the sea foam, and then the vector radiation transfer equation is constructed to realize the real-time calculation of the light scattering coefficient of the sea foam.
Owner:XIDIAN UNIV
A device and method for dynamically monitoring ocean wave height and synchronously realizing friction power generation
InactiveCN109029386BIncrease profitImprove measurement accuracyOpen water surveyFriction generatorsSea wavesClassical mechanics
The invention relates to a device and a method for dynamically monitoring a wave height of ocean and synchronously implementing friction power generation. The device is composed of a floater system, abase system and a shell. The floater system moves synchronously with the sea waves, and comprises a floating ball, four connecting rods, an inner circular magnet ring, four supporting rods and an outer circular ring. The base system is stationary relative to a geodetic coordinate and comprises a counterweight disk, three slide bars, an electric energy receiving module and a sea wave monitoring module. The shell is waterproof and is composed of two identical hollow plastic semicircular cylinders. When the sea waves occur, the base system and the outer shell generate relative displacement withthe floater system, the outer circular ring moves up and down relative to the slide bars in the base system, and power generation materials on the surfaces of the two components generates power through friction; and the inner circular magnet ring moves up and down relative to the base system, an ampere circular magnetic field generated by the pulse current intersects with a permanent magnetic field of the magnet ring, a stress wave pulse signal is generated in a waveguide, and a real-time wave height can be obtained by detecting the time interval between the two pulses.
Owner:SOUTHWEST PETROLEUM UNIV
Ocean shore-based observation system
ActiveCN114166189ARealize height monitoringMeasuring open water movementMeasuring open water depthCable transmissionSea waves
An ocean shore-based observation system provided by the present invention comprises a sea wave monitoring unit, a seabed observation platform and a shore-based control center, the sea wave monitoring unit and the seabed observation platform are connected with the shore-based control center through an integrated cable, and the sea wave monitoring unit is used for collecting sea wave image video information and sending the sea wave image video information to the seabed observation platform. The sea wave height condition is transmitted to the shore-based control center through a cable; the seabed observation platform comprises a platform main body, an observation instrument and an underwater image acquisition unit, the platform main body is arranged underwater, and underwater ocean parameter information is acquired through the observation instrument and the underwater image acquisition unit; and the shore-based control center is used for analyzing parameters acquired by the observation instrument and the sea wave monitoring unit and realizing a series of later-stage extended functions such as data release and information integration.
Owner:HAINAN CHAOCHUAN E-COMMERCE CO LTD
A method for stabilizing the output power of a direct-drive marine wave generator
InactiveCN104079222BStable output powerGuaranteed uptimeElectric generator controlPower qualityPower flow
The invention discloses a method for smoothing output power of a direct-drive type ocean wave electric generator. On the premise of conducting direct electric generation through ocean wave energy, the purpose is realized that the power output by the electric generator is enabled to be smooth and steady through the method of adjusting the current iq of a shaft q of the electric generator, instead of additionally arranging electrical energy storage devices required by a regular ocean wave electric generation system. The prediction method of ocean wave heights based on an ARMA model is introduced to the calculation process of the ocean wave energy, the magnitude of the current iq of the shaft q of the electric generator is properly adjusted according to the work efficiency of the ocean wave electric generator, so that the process of converting the ocean wave energy into electric energy is enabled to be smooth and steady, and thus it is guaranteed that the output power of the ocean wave electric generator is enabled to be smooth and steady. According to the method for smoothing the output power of the direct-drive type ocean wave electric generator, on the one hand, the electrical energy storage devices required by the regular ocean wave electric generation system are omitted, and thus input cost is greatly reduced, on the other hand, the electrical energy quality output by the ocean wave electric generation system is improved, and the operation performance of parallel grid power transmission of a direct-drive type ocean wave electric generation system is improved.
Owner:SOUTHEAST UNIV
A calculation method, terminal and measurement system for ocean wave height
The invention discloses a method for calculating the wave height of sea waves. The method includes: adjusting the pulse width of the radar to be the minimum, collecting the first image sequence, and recording the first true heading angle sequence and the first latitude and longitude coordinate information sequence of the ship; selecting the image Inversion area, inversion area motion compensation; ocean wave information inversion, to obtain the wavelength of the main wave wave; adjust the pulse width of the radar, so that the resolution of the radar is equal to the wavelength of the main wave wave, collect the second image sequence, and record the second wave of the ship The true heading angle sequence and the second latitude and longitude coordinate information sequence; select the image inversion area, and perform motion compensation in the inversion area; calculate the average radar cross-sectional area of the sea surface in the inversion area; and calculate the effective wave height of the ocean wave. The beneficial effect of the invention is that only one calibration is required to retrieve the effective wave height in all sea areas.
Owner:CSSC MARINE TECH CO LTD
A Laser Acoustic Underwater Communication System Adaptive to Sea Wave Height
ActiveCN108521307BOptimal Laser Focus Excitation PositionImprove focus qualityTransmissionElectromagnetic wave reradiationSea wavesBeam expander
A laser-acoustic underwater communication system with self-adaptive wave height. In the field of laser-acoustic underwater communication, in order to solve the problems in the existing technology that the wave height cannot be adaptively adjusted, the weather is bad, and the platform is disturbed. The problem of low sound conversion efficiency and poor underwater communication quality includes lasers, beam expanders, zoom optical systems, laser ranging systems, controllers, and motors. The beam emitted by the laser is expanded by the beam expander and enters the zoom Optical system, the light beam is focused under the water surface after passing through the zoom optical system, which is excited to generate sound waves for communication, and the laser ranging system is excited to measure the height of the sea waves in real time, and the real-time measured sea level height data is transmitted to the master control system for data processing and transmission The electric signal is sent to the motor, and the motor controls the zoom optical system to adjust accordingly to compensate for the sea level change caused by the waves, so as to maintain the best underwater laser focus position and realize real-time adjustment of the underwater communication system breakdown position.
Owner:CHANGCHUN UNIV OF SCI & TECH
Low-altitude flight pneumatic identification control method for dynamically correcting reference trajectory
ActiveCN113126494AImprove adaptabilityImprove featuresSustainable transportationAdaptive controlBacksteppingSea waves
The invention relates to a low-altitude flight pneumatic identification control method for dynamically correcting a reference trajectory, and belongs to the field of aircraft control. According to the method, the method comprises the steps: firstly, an autoregression model is designed to predict the sea wave height, and a flight height reference instruction introducing sea wave height dynamic prediction information is given; then the aircraft longitudinal dynamics model is converted into a speed subsystem and a height subsystem, and dynamic inverse control is designed for the speed subsystem; and backstepping method control is designed for a height subsystem, the problem of unknown aerodynamic characteristics caused by sea waves is considered, an aerodynamic function is converted into a linear parameterization form of multiplication of a known state vector and an unknown aerodynamic parameter vector, and an adaptive estimation law is designed to estimate unknown aerodynamic parameters. According to the pneumatic identification control method for designing the dynamic correction of the reference trajectory by considering the influence of sea waves, highly fine control is realized, and the method is of great significance to ultra-low-altitude sea-skimming penetration prevention.
Owner:NORTHWESTERN POLYTECHNICAL UNIV +1
A Wavelet Height Prediction Method Based on Wavelet Decomposition-Neural Network
ActiveCN108334987BEasy to operateStrong reliabilityForecastingCharacter and pattern recognitionMaritime navigationAlgorithm
The invention discloses a wave height prediction method based on wavelet decomposition-neural network, which belongs to the technical field of marine monitoring. The time series is generated by buoy data, and the time series is decomposed and reconstructed to solve the clutter in the sequence; The data is used for the processing of neural network training samples; training of neural network models, wavelet decomposition and reconstruction of time series, continuous optimization of training samples and wavelet decomposition layers during training, and establishment of corresponding wavelet decomposition-neural networks for training using feedback neural networks Network model; use the test samples established in the neural network to test the wavelet decomposition-neural network model with test samples. The invention can predict the extreme wave height of sea waves for a period of time in the future, so as to provide strong guarantee for sea operations and sea navigation.
Owner:浪潮卓数大数据产业发展有限公司
Drowning-preventing surfboard with detection chip
InactiveCN112193373AEnsure safetyAvoid destructionWater sport boardsWaterborne vesselsSea wavesOcean wave height
The invention discloses an anti-drowning surfboard with a detection chip, which comprises a surfboard body and a movement cavity formed in the surfboard body, a storage box is fixedly arranged in themovement cavity, a storage cavity is formed in the storage box, a supporting telescopic rod is fixedly arranged at the bottom of the storage cavity, and a chip is arranged in the surfboard body. The detection probes are connected to the chip and the two ends of the surfboard, the detection probes can detect the height of sea waves, and when too high sea waves are detected, the probes are retractedinto the surfboard to be prevented from being damaged. Furthermore, the inner part of the surfboard is open and a man is clamped in the inner part, and furthermore the bottom air bag of the surfboardis quickly inflated so that the floating force of the surfboard increases for suspending on the sea surface. The surfboard is further provided with an overturning mechanism, it can be guaranteed thatthe head of a user faces upwards all the time, the drowning event caused by faint of the user after the user is beaten by waves is prevented, the safety of the user is guaranteed, meanwhile, automation of the treatment process is achieved. The treatment efficiency is greatly improved and the labor force is saved.
Owner:TAIZHOU JIAOJIANG NANTUN ELECTRONICS CO LTD
An energy harvesting device that uses ocean energy to generate electricity
InactiveCN105569914BMaximize acquisitionImprove efficiencyMachines/enginesEngine componentsWater storageElectric machinery
Owner:HOHAI UNIV +1
Sea wave height detection method, device and apparatus and storage medium
InactiveCN111457901AImprove accuracyImprove stabilityMeasuring open water movementRadio wave reradiation/reflectionSea wavesPhase difference
The invention discloses a sea wave height detection method, device and apparatus and a storage medium. The sea wave height detection method comprises the following steps of: receiving a first echo signal returned by an emission source from a to-be-detected point at a first position, and receiving a second echo signal returned by the emission source from the to-be-detected point at a second position; determining a phase difference between the first echo signal and the second echo signal; and determining the height of the to-be-measured point according to the phase difference, the distance between the second position and the to-be-measured point and a first position parameter. The problem that sea wave height measurement accuracy is poor is solved; the accuracy and stability of sea wave height measurement are improved; and the use efficiency of ocean remote sensing measurement equipment is improved.
Owner:BEIJING CHANGFENG BROADCASTING COMM EQUIP
Ocean wave height calculation method and device, storage medium and processor
ActiveCN107678025BImprove accuracySolve the problem of inaccurate calculation of wave height resultsRadio wave reradiation/reflectionFrequency spectrumSea waves
The invention discloses a method and device for calculating the wave height of ocean waves, a storage medium and a processor. The method includes: taking the radar position as the center and determining a plurality of sectors and scanning lines of a predetermined size in the sea area to be measured; collecting the sequence of instantaneous peak spectrum changes over time of positions on the scanning line that meet preset conditions; The maximum value of is used as the main frequency; the corresponding wavelength is calculated according to the main frequency; the wave height of the corresponding wavelength is calculated by the preset correction coefficient. Through the present invention, the effect of improving the accuracy of the calculation result of the sea wave height is achieved.
Owner:BEIJING HIGHLANDER DIGITAL TECH +1
A Method for Predicting Significant Wave Height of Ocean Waves Based on Multiple Sine Function Decomposition Neural Networks
ActiveCN111811465BTight fitAvoid economic lossMeasuring open water movementHeight/levelling measurementSea wavesOcean wave height
The invention discloses a method for predicting the significant wave height of ocean waves based on multi-sine function decomposition neural network, including S1. Obtaining the time series L(t of ocean wave fluctuations j ), and the time series L(t j ) is divided into learning data time length and verification data time length; S2. Utilizes M sine functions to decompose and study the single-point time series extracted by learning data time length; S3. Finally, accumulate the results of the learned sine functions, and Comparing with the verification data to calculate the mean square error, judging that the prediction results meet the threshold set by MSE, and then predicting the effective wave height in the future time to realize the effective wave height prediction of the entire area; this method decomposes and learns the effective wave height time series through multiple sine functions, Predict the significant wave height of ocean waves; it has been verified that the significant wave height of ocean waves can be effectively predicted by using the method for predicting significant wave height of ocean waves in the present invention, which has a significant effect on the study of ocean wave fluctuations and ocean climate change laws.
Owner:GUANGDONG ZHANJIANG PROVINCIAL LAB OF SOUTHERN MARINE SCI & ENG
Control method based on moving average analysis model for ocean wave power generation device
InactiveCN108301963AIncreased implementation costsLow utilization efficiencyMachines/enginesSafety/regulatory devicesMoving averageWave power generation
The invention discloses a control method based on a moving average analysis model for an ocean wave power generation device. The control method comprises the following steps that 1, a sensor with a data storage function is utilized to collect and store a historical value and a current value of an ocean wave height; 2, through establishing the moving average analysis model, on the basis that the historical value and the current value of the ocean wave height are analyzed, the height of ocean waves in a period of time in future is predicted; and 3, the motion state of the ocean wave power generation device is optimized and controlled according to a prediction value, so that the efficiency of converting wave energy into electric energy by the ocean wave power generation device is improved.
Owner:SOUTHEAST UNIV
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