1354 results about "Wind wave" patented technology

The invention discloses an unmanned surface vessel formation control method based on a leader follow-up structure. The method is used for multiple fully-driven unmanned surface vessel systems, and a formation control method based on a leader-follower is provided to prevent any follower from colliding and being kept in connection with a leader thereof. The method comprises following steps of establishing a dynamic model of an unmanned surface vessel; setting a position output tracking error constraint condition of a follower; designing a tracking error conversion function; applying the dynamic surface control technology and designing a virtual controller; designing a disturbance observer for compensating external unknown interference like wind wave flows; and constructively designing a tracking formation controller. According to the invention, it is ensured that any follower is always kept away from the leader thereof for a certain safe distance, and is in a communication connection range of the leader thereof; and by use of the dynamic surface control technology, accelerated speed of the leader is prevented from being used and practicability of a design scheme is improved.

The invention provides a novel floating type multi-floater wind-wave energy hybrid power generation device which comprises a wind driven generator, a floating foundation platform, a wave energy capture device and connecting structures between floating bodies, wherein the wind driven generator comprises blades, a hub, a cabin and a tower; the floating type foundation platform is a semi-submersible type and is located on the sea surface by an overhung anchor chain line; the wave energy capture device comprises floaters and an energy capture (PTO) system, and the axial relative movement between the wave energy floaters and stand columns of the foundation platform under the action of wave energy is utilized to drive the PTO system to generate electric energy; and each connecting mechanism comprises a guide rail and a U-shaped wheel, and can enable the platform and the wave energy floaters to produce axial relative movement only. The novel floating type multi-floater wind-wave energy hybrid power generation device can realize the purpose of joint power generation of offshore wind energy and wave energy by utilizing mechanical energy possessed by offshore air and wave, and is good in stability, wide in applicable water depth scope, high in power generation efficiency, simple in structure form and reliable in power generation mode.

The invention provides a deep sea net cage culture integrated platform which comprises culture net cage subsystems which perform the fish culture function and composed of anti-wind wave net cages, a power supply subsystem using solar energy and wind energy to generate electricity, a supporting platform for fixing the power supply subsystem and the culture net cage subsystems in the special space and an anchoring subsystem. The power supply sub-system is installed on the supporting platform; the net cages are connected with the supporting platform in a flexible connecting mode, the anchoring subsystem is composed of a power supply subsystem anchoring device and a net cage subsystem anchoring device. The supporting platform is further provided with feed storage rooms, bait feeding devices, monitoring devices and a communication device. The platform can realize automatic net cage fish culture production in a sea area under highoceanic condition, and has the characteristics of strong wind wave resistance, environmental protection, and high production efficiency and the like, and is a comprehensive platform for supporting sea water fish culture from near-shore to deep sea.

The present invention relates to a wave energy conversion and power generation system. Said invention is characterized by that it utilizes a flexible surface which can be flexibly bent and fluctuated with wave to receive drive of wave, and utilizes a rope whose one end is tied on the described flexible surface and another end is winded round a rotating wheel to pull said rotating wheel, so that said rotating wheel can be used for converting wave energy into mechanical energy, then utilizes a hydraulic system and a power generator unit to convert the mechanical energy into electric energy.

The invention relates to a water platform specially used for solar power generation, which is a water platform of a floating type or bed rest type fixed structure with solar electricity-heat hybrid collector; the electricity-heat hybrid collector of glass tube structure is provided with a cooling circulatory system; the solar electricity-heat hybrid collector is connected on an installation plane which is higher than the height of water wave in a matrix and facing the reflecting direction of the sunlight, so as to directly supply power after net incorporation and connection of a control device and an inverter into the land grid, or store energy and supply power after connection with the accumulated battery set. The water platform specially used for solar power generation adopted greatly reduces the wind load, improves the anti-wind-wave stability, reduces the weight and greatly reduces the building and maintaining cost; and can be arranged on the shallow beach water near areas on rivers, lakes and seas to reduce the electricity consumption of the power transmission and transformation circuits, with far wider scope of construction than the prior art.

The invention discloses a device for recovering an autonomous underwater vehicle by an unmanned ship based on a guide cable. The device for recovering the autonomous underwater vehicle is characterized in that the water surface unmanned ship, a recovery device carried on the water surface unmanned ship, the recovered or arranged autonomous underwater vehicle and a guide recovery control system arranged on the autonomous underwater vehicle are included; an underwater acoustic transducer is arranged at the bottom of the water surface unmanned ship and is used for underwater acoustic communication of the water surface unmanned ship and the autonomous underwater vehicle; a hydraulic telescopic rod connected with the recovery device is arranged in a cabin of the water surface unmanned ship; motion of the recovery device in the vertical direction can be achieved through the hydraulic telescopic rod; and an arc-shaped guide arm and cable fastening pliers are arranged at the top end of the bowof the autonomous underwater vehicle. The device for recovering the autonomous underwater vehicle has the beneficial effects that a USV serves as a water surface platform, and the device and method for autonomously recovering the autonomous underwater vehicle (AUV) through a guide cable are adopted so as to overcome the defects that in the prior technological means, water surface arrangement recovery is greatly influenced by sea wind waves, and people and equipment safety risk exists.

The method of utilizing floated plant bed to treat wind wave eutrophic lake area features that Alternathera philoxeroides is planted onto floating carrier to form floated plant bed fixed to the water surface. The floated plant bed consists of several strips with Alternathera philoxeroides, preferably planted before or just after germination. The floating carrier may be netted bags with floated plant and is fixed with piles, ropes or stone cages to water bottom. The floating carrier may also be bamboo raft with Alternathera philoxeroides and fixed with piles and ropes to water bottom.

The invention discloses a semi-submergible breeding net cage, and particularly relates to an anchor type self-power semi-submergible breeding net cage which comprises a net cage frame and an anchoring mechanism. The anchoring mechanism is rigidly connected with the net cage frame, the net cage frame is of a triangular prism-cuboid-triangular prism pieced octahedron structure, netting is laid on side vertical surfaces and the lower bottom surface of the net cage frame, mechanisms are arranged on the side vertical surfaces of the net cage frame, the netting can be conveniently collected and pulled by constructors by the aid of the mechanisms, S-shaped blades which can rotate under impact effects of sea current are mounted on two pairs of side vertical surfaces in current facing directions, and a power generator set for converting kinetic energy generated by the S-shaped blades into electric energy is mounted on the net cage frame. The anchor type self-power semi-submergible breeding net cage has the advantages that the 'wind-wave resistance of the anchor type self-power semi-submergible breeding net cage can be enhanced'; the anchor type self-power semi-submergible breeding net cage is high in sea current resistance and wind-wave impact resistance and long in service life; the breeding level of bred objects such as fish and shrimps can be upgraded by the anchor type self-power semi-submergible breeding net cage.

The invention provides a submerged floating energy-gathered guiding type wave power generation platform and belongs to the field of ocean engineering and wave power generation equipment technologies. The submerged floating energy-gathered guiding type wave power generation platform is high in wave energy utilization rate and comprises a submerged floating body, an energy conversion device and a mooring system. The platform can adapt to multiple working conditions by controlling and adjusting ballast water quantity in ballast tanks in the submerged floating body through an automatic adjusting ballast water system and can not be affected by tide level changes and water level changes. The platform can adapt to wind wave current force in different directions by adjusting the mooring system so that a swing board on the platform can be adjusted to the head sea working direction. The wave end of the submerged floating body is provided with a contracted energy-gathered guiding wave path and can substantially improve the wave energy conversion rate. The bottom of the submerged floating body is provided with an electric generator, storage batteries and other energy conversion devices. The maintenance cost is low, the conversion distance from mechanical energy to electric energy is shortened, and the generating efficiency is improved. According to the submerged floating energy-gathered guiding type wave power generation platform, a power generation system can be established in a nearshore sea area just through the manner that the submerged floating body is located through anchor chains, and the submerged floating energy-gathered guiding type wave power generation platform is a reliable, efficient and economical marine power generation platform.

The invention discloses a reinforcement type wind wave resistant oyster cultivation method, which comprises the following steps: in a buoyant raft type hanging mode, firstly, clamping a scallop shell attached with an oyster juvenile mollusk in the screwing gap of a clamping rope; fixing the scallop shell onto the clamping rope by single strand of high-strength fish wire; according to the amount of the oyster larvae, fixing one scallop shell substratum at a certain fixed distance; and finally, hanging the clamping rope on a buoyant raft for cultivation. The reinforcement type wind wave oyster cultivation method has the advantages that the cultivated oyster is prevented from falling in the mode that the clamping rope used for the cultivation is thickened and the single strand of fish wire is used for reinforcement under the offshore cultivation environment of big wind wave, and yield loss caused by the wind wave is reduced. The operation method is simple and easy to realize, and has an important function on lowering the management cost in the oyster cultivation process and improving the oyster yield.

The invention discloses a hardware in-loop simulation system for comprehensive optimization control of main power and manipulation of a ship. The system comprises a virtual ship motion simulation system, a ship main power and manipulation comprehensive optimization controller, a ship steering and main engine console, a ship monitoring simulation system, a system scheduling server and an Ethernet, wherein the virtual ship motion simulation system, the ship main power and manipulation comprehensive optimization controller, the ship monitoring simulation system and the system scheduling server exchange data with each other through the Ethernet respectively; and the ship main power and manipulation comprehensive optimization controller is directly connected with the ship steering and main engine console through analogue level. Because a user of the invention can set different ship parameters such as length of the ship, draft and block coefficient and sea condition parameters such as wind wave strength, direction and the like on a user interface provided in the ship monitoring simulation system as required, the control simulation effects of various types of ships under various sea conditions can be simulated.

The invention belongs to the technical field of a wave maker control system and relates to a closed loop control method for a small indoor wind wave water tank wave maker, in particular to a closed loop control system integrating hardware with software. In the method, a wave height meter acquires wave height data, serving as a feedback signal for wave-making control, in real time to form the closed loop control for a rocker panel wave making process; an anemometer measures the wind speed, serving as a feedback signal for wind-making control, in real time in an air flue to form the closed loop control for a fan wind making process; and a rocker panel-made shallow water wave and a fan-made capillary wave are in telecommunication with each other to form the closed loop control system. A system device for realizing the closed loop control comprises an upper computer monitoring module, a wave-making module and a wind-making module. The method has a safe and reliable control principle, good closed loop control effect on wave-making and wind-making functions and high automation degree, can realize integrated mechanical wind-making and wind-making wave-making simulation and can be widely applied to the wave-making occasions of various small indoor wave makers to form the integrated closed control systems.

A ship hull structure includes a main hull and a movable rearbody having an engine and a propeller. The movable rearbody is located at a lower side of a stern of the main hull, connected with an aft of the main hull to form an integral unit by a hinge linking device allowing the rearbody to pivot up and down. By a block, a crane or a winch and through a chain or a hanging wire, a pivoting angle of the movable rearbody with respect to the main hull can be adjusted and controlled. A bottom of the hull can be provided with at least one, usually plural, air cushion recess, which is filled with pressurized air to reduce a viscous force between a bottom of the ship and water. When a ship of this kind of structure is sailing, the rearbody can be lifted up by the block or the winch, allowing part of the propeller to be separated from a water surface to reduce resistance in the water that the engine can achieve a required rotational speed (RPM) in a short time. Next, the rearbody is laid down slowly, allowing the propeller to be put into the water, thereby increasing propulsion and quickly achieving a cruising speed. When the ship is sailing and encounters with wind wave, the stern will ascend by longitudinal pitching; at this time, the rearbody can descend by its own weight, with a hinge axis as a center, preventing the propeller to leave the water surface to rotate idly. On the other hand, when a bow ascends (that is, the stern descends), the rearbody will maintain a normal draught height by buoyancy of the water and the force between the water and running propeller Therefore, for the entire ship, a wetted surface area of the propeller can be adjusted automatically to keep at a best sailing condition, which can further save fuel consumption significantly. In another embodiment that the bottom of the ship is formed with the air cushion recesses, a friction force of the water can be reduced to increase a ship speed by the air cushion effect formed at the bottom of the ship.

The invention relates to the technical field of unmanned remote measuring and provides a quick disassembling and assembling shallow diving line type unmanned ship which comprises a main hull, two shallow diving line type floating body modules, two underwater power propulsion modules, and an instrument carrying and central control module which are connected through a rotatable and slidable combined connecting device which has the function of rotation, flexibility and translation. The quick disassembling and assembling shallow diving line type unmanned ship has the advantages that the big quality water surface unmanned ship which has powerful capacity of resisting wind waves and larger bearing capacity is decentralized, the requirements of convenient transportation are met, what is more important is that the easy and accurate adjustment of the centre of gravity and buoyancy of the ship can be realized according to different water area working conditions and the changeable loading conditions, the sailing optimized posture of the hull is guaranteed, and the requirements of carrying various instruments and equipment and normal operation on the unmanned ship are met.

The invention provides a full-automatic cruising batch feeding ship for a prawn pond. The ship comprises a ship body, a fodder box, a batch feeding controller, a distance detector and a solar cell panel. The ship body is of a double-body three-propeller structure. An engineering plastic mould is used for injection moulding. Good corrosion resistance, stability and wind wave resistance are achieved. A GPS locating instrument is arranged in the ship body and can effectively prevent the ship from yawing during traveling. A wind turbine and a feeding locking device are arranged in the batch feeding device, feeding amount can be controlled according to needs, and prawn fodder is evenly and accurately thrown to feeding points of prawns. The ship is suitable for carrying out batch feeding in ponds with different shapes and different sizes, batch feeding effect is good, the solar cell panel is used as a driving energy source, environment pollution is lowered, and energy is saved. The ship has the advantages that batch feeding is automatic, manual operation is of no need, energy loss is reduced, and labor cost is lowered.

The controllable fast reservoir blue-green alga bloom eliminating method includes: raising filter feeder fishes; raising and protecting snails, crabs, calms and other water benthic fauna to degrade excrement of the fishes; and controlling water level to favor the disturbance of wind wave to bottom sludge, to ensure the ingestion of water benthic fauna to silt and the limitation of snails' ingestion area. The present invention adopts biological treatment of reservoir blue-green alga bloom without lowering eutrophic salt condition of water.

The invention belongs to the technical field of environmental protection, and particularly relates to a method and a device for stream guidance and enrichment of blue-green algae in a large water area. With the adoption of the method and the device for the stream guidance and the enrichment of the blue-green algae in the large water area, a certain area which is in shore, and in which the guiding wind is in the downwind direction in the large water area is selected as a blue-green algae stream guidance and enrichment area; a blue-green algae stream guidance and enrichment device is established by utilizing an arched soft algae blocking enclosure and a stream guiding door of which the two sides are in shore; large-scale blue-green algae from outside is guided and gathered to the two sides of the shore by utilizing the arched soft algae blocking enclosure; and the blue-green algae is guided into the enrichment area by utilizing timely opening and closing of the stream guidance door, or the enriched blue-green algae is prevented from blowing and escaping with wind; wind waves in the enrichment area can be reduced by the blue-green algae stream guidance enrichment device, so that the blue-green algae in the enrichment area can always float onto the water surface, and is conveniently to be absorbed and cleared continuously; and in addition, a blue-green algae stream guiding enrichment trap and an efficient algae absorbing area are constructed at one side close to the bottom shore in the blue-green algae stream guidance and enrichment area by utilizing vantage ground, so that the blue-green algae in the enrichment area is further enriched for second time to the area, and is conveniently efficiently absorbed and cleared.

The invention discloses a system for observing and simulating a wind-wave-flow coupling field for a sea-crossing bridge, and the system comprises a wind observation system, a wave flow observation system, a tide level observation system, a data collection and storage system, and a wind-wave-flow coupling field numerical analysis system. The wind observation system comprises a plurality of wind observation stations, and the wind observation stations are located on the lands of two shores for gradient wind observation. The wave flow observation system comprises a plurality of wave flow observation stations, and the wave flow observation stations are located in nearby water areas for continuous observation of wave surfaces and layered flowing speeds. The tide level observation system comprises a plurality of tide level observation stations, and the tide level observation stations are located in water areas which are located at the place of the bridge and nearby the shores. The observation data of the spatial correlation among wind, wave, ocean current and tide level and the time synchronization and continuous observation data are stored in the data collection and storage system. Based on the above observation data, the wind-wave-flow coupling field numerical analysis system builds a wind-wave-flow coupling field numerical simulation model. The wind-wave-flow coupling field characteristic parameters which are spatially correlated and synchronous in time and act on the bridge are analyzed through combining with historical observation data after verification and correction.

The invention relates to a method for simulating an underwater polarization field of wave water surface transmitted light. The method comprises the following steps: firstly, building a polarization model based on Rayleigh scattering sky light, and calculating the polarization of incident sky light; according to different refraction coefficients corresponding to a parallel component and a vertical component of an incident light E vector, obtaining a Mueller matrix of a refraction process of a calm water surface; secondly, building a probability distribution model of a wave water surface element gradient, unifying the reference coordinate systems of the incident light and transmitted light, considering the shield effect among wind waves, and obtaining a Mueller matrix of a refraction process of a wave water surface; and finally, combining the Stokes parameter representation method to obtain a polarization field distribution mode of underwater transmitted light. The method can successfully simulate polarization characteristic distribution of underwater transmitted light of different sun positions and takes the influence of wind speed and wind direction on underwater light field polarization characteristic distribution into consideration. Meanwhile, the method can reveal polarization distribution rules of underwater transmitted light in a Snell window.

The invention provides an automatic deepwater net cage intelligent settlement system which is high in degree of intelligence, and can settle in advance before wind waves occur, and automatically float upwards after the wind waves subside. The automatic deepwater net cage intelligent settlement system comprises a net cage body, buoyancy airbags (4), inflatable devices (5), a local meteorological monitor (11), an offshore console (12), first electromagnetic valves (15), peripheral meteorological monitoring buoys (9) and an onshore console (10), wherein the inflatable devices (5) are connected with the buoyancy airbags (4) through the first electromagnetic valves (15); a first relief port (16) is formed in each first electromagnetic valve (15); the local meteorological monitor (11), the first electromagnetic valves (15) and the inflatable devices (5) are all electrically connected with the offshore console (12); the peripheral meteorological monitoring buoys (9) are in wireless connection with the offshore console (12); the offshore console (12) is in wireless connection with the onshore console (10); the electricity utilization components in the all components are all connected with a power supply.

The invention discloses an unmanned ship working through light wave complementation. The unmanned ship comprises a water surface mother ship and an underwater glider which are connected through a middle cable. The acting force between hydrofoils and the water mainly serves as the advance power of the underwater glider. Meanwhile, a wave energy-kinetic energy conversion mechanism coverts wave energy collected in the hydrofoil overturn process into kinetic energy, a propeller drives the underwater glider to advance, and then the water surface mother ship is driven to advance through the middle cable. Motors of propelling devices are arranged at the rear edges of the last group of hydrofoils, on the one hand, the underwater glider is propelled to advance when wind waves are small, on the other hand, the thrusts of the propelling devices are different by controlling the different powers of the motors of the two groups of propelling devices, and then steering of the propelling devices is controlled. The unmanned ship works by comprehensively utilizing complementation of solar energy and wave energy and can work for a long time under the situation that any energy is lacked, for example, the unmanned ship can work in a rainy weather lasting for a long time or in a sea area where waves are small, so that the light wave complementation purpose is truly achieved.

The invention discloses an unmanned ship path planning method based on deep reinforcement learning and considering marine environment elements. The method comprises the basic steps of S1, interpolating wind, wave and flow data of a target sea area, and adding obstacle information, starting point information and end point information, S2, evaluating the maximum value of the wind wave flow borne bythe unmanned ship by using a Bayesian network, S3, reorganizing the AIS data of the target sea area into a training network to obtain an optimized experience pool and preliminary network parameters, S4, respectively inputting the unmanned ship state feature vectors into a deep reinforcement learning module for algorithm iteration, updating network parameters, and outputting actions,S5, iterating the unmanned ship to run for 15 seconds each time, and updating the data when the cumulative time reaches 1 hour,and S6, when the unmanned ship arrives at the target point, ending iteration, and outputting a path. According to the method, the influence of the marine environment factors on the navigation of the unmanned ship is fully considered, the actual long-range navigation condition of the unmanned ship is better met, the environment factors and obstacle information can be considered at the same time under the severe sea condition of the unmanned ship, and high-quality safety is obtained.

The invention discloses a bridge wind wave and flow coupling field, an elastic model and a dynamic response experiment test system body. The system comprises a wind wave and flow coupling field simulation system, a bridge elastic model in the wind wave and flow coupling field and a dynamic response experiment test system body. The wind wave and flow coupling field is generated by the wind wave and flow coupling field simulation system with time synchronization and space correlation of wind, wave and flow considered; simulation of the characteristic of a bridge elastic structure is achieved by the bridge elastic model in the wind wave and flow coupling field in the wind and flow coupling field generated by the wind wave and flow coupling field simulation system; the dynamic response of the bridge elastic model is tested by the dynamic response experiment test system body, and a test result is obtained. By means of the bridge wind wave and flow coupling field, the elastic model and the dynamic response experiment test system body, simulation of the wind wave and flow coupling field and the bridge elastic model in the wind flow coupling field and the dynamic response experiment test body can be achieved.