39 results about "Ocean wave height" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.