75 results about "Maritime navigation" patented technology

A synthetic underwater visualization system (SUVS) comprising a real-time graphics software engine, a sophisticated underwater environmental sensor, a fixed-base database, and a retrieval system designed to accept and assimilate into a common database bathymetric and environmental information acquired from around the world by components of other deployed SUVS sensing systems. SUVS is capable of sensing, modeling, and realistically displaying underwater environments in real-time, and will foster widespread utilization in the areas of homeland security, commercial and recreational maritime navigation, bathymetric data collection, and environmental analysis. The technology will also be readily adaptable and highly desirable in non-marine applications.

The invention belongs to the field of unmanned ship global path planning and particularly relates to an unmanned ship global path multi-target planning method based on the improved ant colony algorithm. The method comprises steps of establishing a marine environment map model by utilizing a Maklink graph theory; improving a path heuristic information strategy to obtain a path average value; designing an ant pheromone volatilization adaptive adjustment strategy; designing a strategy combining local pheromone updating and global pheromone updating; improving the state transition probability of anext node searched by an ant colony through a heading angle deviation factor of an unmanned ship; and designing an evaluation function by integrating the requirements of the shortest global path length, the least optimization iteration times of the improved ant colony algorithm, the lowest path smoothing coefficient and the like. The method is advantaged in that multiple targets such as a globalpath distance of marine navigation of an unmanned surface vehicle, the iteration frequency of optimizing the global path by improving the ant colony algorithm and the smoothness coefficient of the planned global path are comprehensively considered, the optimal global path of marine navigation of the unmanned surface vehicle is finally planned, and the method has relatively high safety.

A method for small-scale fishing boat to avoid ship collision includes the steps of: (1) equipping the small-scale fishing boat with a radar signal receiver for scanning and receiving radar signals transmitted by other ships within the receiving range of the radar signal receiver; (2) using a monitoring computer having a Marine Geographic Information System (Marine GIS) installed thereon to obtain at real time information about the distance, bearings, and etc. of other approaching ships in order to monitor the dynamic conditions of the approaching ships within the fishing boat's operating water area; and (3) actuating a collision warning mechanism based on the intensities of received radar signals when there is more than one approaching ship, so that the small-scale fishing boat can timely receive a collision warning to reduce the risk of collision and maintain safe and smooth voyage on the sea.

The present invention contributes to vessel navigation safety, by applying conventional navigation technology and using smartphones or other wireless communication terminals to provide a chart according to vessel type. Provided is a server system 3, which: receives, from wireless communication terminals 2 which are carried by users aboard vessels 4, position information of the wireless communication terminals 2 and information of the sizes of the vessels 4; creates, in response to the sizes of the vessels 4, navigation trajectory information formed from time series position information of the vessels 4; and, with the navigation trajectory information as an input, updates navigable course information for each size of the vessels 4.

The Latest Technology on Waters Zone Rubbish Cleaner according to this invention is using robotic phonton of catamaran type that will carry all automatic rubbish screening eguipment to freely move at sea, reservoir, lake, river mouths and other water zones. This phonton motorboat of catamaran type will become the driving media to create water flow that will pass through the screen bar already installed between the two sides of the phonton motorboat. This phonton motorboat is equipped with all maritime navigation equipment that enables it to move forward as well as backward under speed between 1 knot up to 15 knots. Furthermore, it will cause rubbishes floating on the surface as well as under the waters zone collided, stuck, trapped or caught on the screen bar. The rubbishes stuck on the screen bar will be carried into the conveyor using the rake from the moveable frame mounted on the rail track.

The invention discloses a ship navigation automatic collision avoidance route planning method and model. The method comprises the following steps: collecting information of an obstacle, a starting point and a destination point, and according to the collected information, when the ship encounters the obstacle in a route planning process, firstly calculating a minimum angle connecting line of the ship capable of avoiding the obstacle, namely a connecting line with a maximum included angle with a test line, and directly recording two possible driving paths on the left side and the right side of the obstacle; and then, when the ship detours along the obstacle, testing each vertex of the obstacle and the middle airway point, respectively calculating and selecting connecting lines with the largest included angles between the left side and the test line and between the right side and the test line, comparing the two connecting lines, and taking the connecting line with the smaller included angle as an alternative route segment to determine a unique route capable of detouring. Compared with the prior art, the ship navigation automatic collision avoidance route planning method and model have the advantages that the route is automatically planned, the requirement of the ship for automatically avoiding collision with obstacles is met, and the method and model have important significance in solving the problems of ship stranding collision and the like and improving marine navigation safety.

The invention discloses a short-term ship attitude prediction method based on empirical mode decomposition and support vector regression. The method comprises the steps that 1, when guidance instruction calculation is conducted for the first time, a convex optimization planning method is applied to conduct guidance instruction calculation, and a calculation result is stored; 2, after first onlinetrajectory planning is completed, in the same planning period, an online trajectory planning method based on convex optimization and a polynomial guidance method are applied in parallel, and guidanceinstructions uCVX and uIGM are obtained respectively; 3, when uCVX-uIGM is smaller than delta and the polynomial guidance planning precision meets the requirement, a polynomial guidance method is switched for guidance calculation, and otherwise, a guidance instruction calculated by a planning method based on convex optimization is adopted for flight; and 4, after switching to the polynomial guidance calculation guidance instruction, guidance instruction and the shutdown time are directly calculated by applying the polynomial guidance until landing. Through empirical mode decomposition and a support vector regression algorithm, the method can be effectively suitable for ship attitude prediction of marine navigation.

The invention discloses a ship track prediction method based on image superposition. The method comprises the following steps: firstly, shooting marine navigation of a ship by using a video, extracting a sequence diagram of each frame in the video, selecting a time period, superposing and compressing each frame of image in the time period onto one image, then processing the image, extracting feature information and track information, and repeating for multiple times; using each compressed image as a new track data set, and using Kalman filtering for prediction. According to the method, the sequence graphs in each period of time are superposed, and the target contour characteristics are extracted, so that the target point of each frame is changed into the target track in each period of time, and when the Kalman filtering method is used for track prediction, the track information is more comprehensive, and the prediction effect is better.

The invention discloses an automatic coordination device for wind wave resistance and direction adjustment of an offshore ship and a using method of the device, and belongs to the technical field of marine equipment. The device comprises a buffer airbag, an automatic wind direction module, a pressure release valve and an air regulation module; the buffer airbag is arranged on the side wall of theship and has elasticity; the automatic wind direction module can automatically align to the wind direction and transmit wind to the buffer air bag; the pressure release valve is communicated with thebuffer air bag; and the air conditioning module is communicated with the pressure release valve. The device can always effectively correspond to the wind direction through the automatic wind directionmodule in the direction adjusting process of the ship body, part of wind originally blown to the ship body is transmitted to the buffering module, and therefore the buffering effect is achieved through the buffering module, and impact of the wind on the ship body is reduced; and after the buffer module is full, the pressure release valve can be automatically opened, so that wind power in the buffer module overflows and is transmitted to the air conditioning module, the air outlet direction of the wind in the air conditioning module is adjusted by a control room according to the actual situation, and the safety of the ship during marine navigation is improved.

The invention provides a bulk cargo ship loading method. According to the bulk cargo ship loading method, cabins of a bulk cargo ship are consecutively loded in a reciprocating mode in an 8 shape, wherein the 8 shape is a central symmetrical figure, the longitudinal symmetrical axis of the cabins serves as the longitudinal symmetrical axis of the 8 shape and serves as a sea-land side boundary ofloading of the bulk ship, the symmetrical center of the 8 shape serves as a loading starting point, and loading is carried out in the direction from the land side to the sea side in a stern incliningmode. By means of the bulk cargo ship loading method, the height of loaded material stacks can be reduced, the gravity center can be lowered, and the possibility that the material stacks collapse dueto shaking of a ship body can be reduced; in the loading process, stacking is always started from the land side, the possibility that the ship body inclines towards the sea side can be reduced to theminimum, and the risk of cable breaking can be avoided; the stable material stacks can be provided, and the balance of the bulk cargo ship can be ensured, so that the balance of the ship body when theship sails on the sea is ensured, and the safety of the ship in the sea sailing process is ensured.

The invention discloses an offshore three-dimensional linkage networking and navigation channel supervision system of an unmanned aerial vehicle group cooperative intelligent navigation mark. The offshore three-dimensional linkage networking and navigation channel supervision system comprises a water surface subnet layer, an air subnet layer and a shore cloud computing center. An unmanned aerial vehicle is combined with an intelligent navigation mark of an offshore platform, the high altitude visual angle, the strong maneuverability and the like of the unmanned aerial vehicle are combined withthe offshore advantages of the navigation mark to implement a seamless supervision communication system on a navigation channel, and higher efficiency and real-time performance are achieved; in addition, navigation mark embedded sensor equipment realizes acquisition of hydrological and meteorological information of the navigation channel, and the traditional process of independently arranging sensors is improved, so that resources are saved; in addition, a navigation mark embedded edge computing device can directly preprocess collected information and transmit the information to a marine navigation ship and an unmanned aerial vehicle in a wireless communication mode. The edge computing device directly preprocesses the data collected by the navigation mark, the bandwidth consumed by offshore data transmission is reduced, meanwhile, it is guaranteed that a sailing ship obtains channel related information in the shortest time, and the sailing safety of the ship is guaranteed.

The invention discloses a polarized light type visibility measurement instrument, in particular a visual optical measurement instrument. Under the condition of keeping background luminance of a view field invariable, the luminance of a target to be measured is changed by the change of the corner of an analyzer in the instrument relative to a polarizer according to a polarization principle of light so that the contrast ratio of the target to the background of the target is changed and the visual critical condition is met, and the corner is converted to the function of visibility; therefore, the aim of measuring the visibility of the target is fulfilled. The visibility measurement instrument is the visual optical measurement instrument in the field of psychophysics. In the illumination engineering and technology, the number and quality of illumination can be evaluated quantitatively, the visual fatigue can be measured quantitatively, and the visibility (seeing or visuality) of special targets (such as maritime navigation, aviation flight and other aspects) can be measured under various natural conditions (climate, rain and fog).

The invention to ship building, particularly to displacement ship with air cavities in bottom. Proposed ship is equipped with device to create air cavities under bottom including cavity-forming system made up of inclined transverse plates arranged one after another and lengthwise constricting keels arranged on bottom sides. Ship incorporates forced air feed system to create and maintain cavities behind aforesaid transverse plates. Transverses plates and lengthwise keels of said retractable system may unfold and fold to fit bottom on turning about their lengthwise axles on ship bottom. The water displacement boat with air cavities on the bottom is characterized in that operating performances are improved, designed draft of the ship is maintained, and navigation resistance of the ship on a surgy sea of notable trim is reduced.

The invention discloses a ship navigation risk assessment information processing method and system and a storage medium. The method comprises the steps of constructing a ship traffic flow model whichcomprises an intelligent ship simulation model and a conventional ship simulation model; presetting initialized water area environment parameters of the ship traffic flow model in a set scene; acquiring ship state information and navigation environment information of the ship traffic flow model in the traffic flow simulation process; performing navigation risk assessment according to the initialized water area environment parameters, the ship state information and the navigation environment information; and generating maritime affair supervision suggestion information according to the assessment result of the navigation risk. Navigation risk assessment is performed on the ship traffic flow model comprising the intelligent ship simulation model and the conventional ship simulation model, sothat the assessment result is enabled to accord with the situation in the actual situation, and thus maritime affair supervision is enabled to effectively govern the maritime navigation situation according to the assessment result. The method can be applied to the technical field of maritime affair simulation.

The invention relates to the field of autonomous navigation of unmanned ships, in particular to an unmanned ship layered obstacle avoidance method based on improved fruit fly optimization and a dynamic window method. The method comprises the following steps: S1, establishing an unmanned ship marine navigation geographical environment model based on an electronic chart; S2, completing global optimal path planning by adopting an improved fruit fly optimization algorithm; S3, establishing an environment model of the dynamic obstacle; and S4, using an improved dynamic window method to avoid the moving obstacle ship. According to the obstacle avoidance method for switching the dynamic obstacle avoidance mode and the static obstacle avoidance mode based on the judgment conditions, obstacles canbe effectively avoided during sailing, the algorithm is prevented from falling into a local optimal solution, the fuzzy control method is adopted for dynamically controlling the weight parameters of the optimal trajectory, and the trajectory prediction precision and efficiency are improved.

The invention discloses a natural energy driven unmanned ship route real-time optimization method considering wave propulsion and a navigation method, and relates to the field of path planning of marine aircrafts. The invention aims to optimize the course between nodes among track points of the original planned course of the natural energy driven unmanned ship according to the wave environment andthe planned course. According to the natural energy driven unmanned ship real-time route optimization method considering wave propulsion and the navigation method, the ship-borne sensor is used for sensing the wave environment, the navigation method in a small range is guided in real time, the real-time dynamic performance is high, and the engineering requirements can be better met. Meanwhile, bymeans of the route correction method, it is guaranteed that the unmanned ship can reach each task node, it can be guaranteed that the wave energy capture capacity between the nodes is improved, and the endurance of the robot is improved.

The invention discloses a ship device based on sea wind power generation. A machine frame is included. A turning plate cavity with an upward opening is formed in the machine frame; a turning plate isrotatably arranged in the turning plate cavity; meshing teeth are fixedly arranged at a right end of the turning plate; a gear is engaged with the right end of the meshing teeth; and a connecting shaft is rotatably connected to the inner walls of the front side and the rear side of the turning plate cavity. In the invention, sea wind can be effectively utilized when a ship sails on the sea; and adesigned double-wind-power device can be used under a condition of large sea wind, a designed garbage collection device can effectively recycle garbage floating on the sea when the ship travels, the garbage is prevented from being wound in a propeller, and energy loss of the ship in a sailing process is effectively reduced.

The invention provides an unmanned ship test system and method. The system comprises an infield test subsystem and an outfield test subsystem. The infield test subsystem is used for constructing simulation scenes of various environments and targets so as to realize equivalent test of the unmanned ship on-sea navigation and task execution processes; and the external field test subsystem is used for constructing a marine test field to carry out an external field test item and verifying an internal field test result. According to the invention, through the infield test subsystem and the outfield test subsystem, the equivalent test of the unmanned ship marine navigation and task execution process is realized, the marine test site is also constructed to carry out an outfield test project, and the infield test result can be verified through the marine test site. The unmanned ship test system provided by the invention meets the test requirements of the unmanned ship and fills the blank of unmanned ship test.

The invention discloses a movable doorsill device for passenger ship disabled people. The movable doorsill device comprises a door frame, a hinge seat, a doorsill and a locking unit, wherein the door frame is arranged between the indoor part and the outdoor part of a passenger ship; a door body is mounted in the door frame and can be opened or closed around the door frame; the hinge seat is fixed on an indoor deck and is close to the bottom of the doorsill; one end of the doorsill is rotationally mounted on the hinge seat; the doorsill has a vertical state and a horizontal state; when the doorsill is in the vertical state, the other end of the doorsill is turned upwards to be vertical; when the doorsill is in the horizontal state, the other end of the doorsill is turned downwards to be in contact with the deck; and the locking unit is arranged on the door frame and the doorsill. The movable doorsill device is simple in structure and convenient to use, and can give consideration to safety, attractiveness and practicability. Meanwhile, when the doorsill is in the vertical state, the doorsill can be locked and kept in the vertical state through the locking unit, so that the safety of the ship sailing on the sea can be further improved.

The present invention relates to the technical field of marine traffic, and in particular discloses a method for intelligent monitoring of maritime buoys, including the following content: adopting buoy devices distributed on the sea to collect navigation direction information of ships corresponding to the coverage of the buoy devices; According to the distribution of bad weather, send warning information to the information receiving center of the ship going to the corresponding position; provide the information receiving center of the ship with navigation information far away from the area where the bad weather is located, so as to effectively navigate the ship on the sea, Avoid accidents at sea.

The invention belongs to the technical field of unmanned yacht application and particularly relates to a seaborne meteorological observation yacht which comprises a main yacht body. Two auxiliary yacht bodies are connected to the two sides of the main yacht body in a rigid manner. The two auxiliary yacht bodies are symmetrically arranged on the two sides of the main yacht body, and the stability of the yacht navigating on the sea is improved beneficially. A deck of the main yacht body is sequentially provided with a GPS device, a rainfall monitor, a temperature and humidity sensor, a control box, a fog degree meter and an unmanned aerial vehicle from the yacht stern to the yacht bow. An inertial navigator connected with the GPS device is further arranged in the main yacht body. A weather radar is loaded on the unmanned aerial vehicle, high-altitude weather can be observed conveniently, sea and air coordinative operation can be achieved, and the blind area of seaborne meteorological observation is reduced. Ultrasonic wave anemorumbometers are arranged on the auxiliary yacht bodies and combined with monitoring equipment arranged on the main yacht body, and seaborne weather can be observed in an all-directional manner.

The invention relates to a gun solute for navy warships, belonging to the technical field of ammunitions. Aiming at solving the problems of poor security in use, low reliability in function, no visual effect and the like in the traditional gun solute, the invention provides the gun solute for warships. According to the invention, an integrated low-pressure chamber structure is used to ensure the sealing performance of the whole shell, the outside of the top of the shell head is provided with a preformed shell-breaking groove, and propellant powder in a high-pressure chamber and a high-pressure body are fixed together through a supporting device, thereby improving the reliability of the gun solute charge when the warships face severe environment condition, and at the same time ensuring that no foreign matter flies out of the gun muzzle, and improving the security of the gun solute in use; a mechanical percussion type primer ignition device is used to solve the problem about the safety and simple operation of the warships under complicated electromagnetic environment; and meanwhile, smoke agent is used for the gun solute, thereby achieving good visual effect in maritime environment and effectively solving the problem that times of sounding of the gun solute cannot be counted by listening in long distance during maritime navigation.

The invention relates to a fishing boat, a fishing touring, a platform, a wharf boat, a heavy lift vessel, a small naval vessel and the like, and is applied to a bionic damping stabilizer (called as aFlopper) in offshore sailing or offshore operation. The bionic damping stabilizer comprises an adjustment balance block, a bionic damping wing and a flow guide wing structure, and a mounting modularsupport structure, wherein the modular support structure comprises a modularized base, a support rod frame, a pulley device and the like; and the formula of the Flopper damping moment is researched and derived, and the stabilization effect is analyzed and studied. The actual offshore experiment result shows that the stabilization effect of the ship with the bionic stabilizer can reach 59% or abovewhen the ship is stationary at sea, the average stabilization effect during navigation can reach 45% or above, and the engineering feasibility and the satisfactory stabilization effect of the deviceare verified.

The invention discloses a movable double-body floating dock which comprises a floating dock body, and the floating dock body comprises a floating box, a left dock wall, a right dock wall, a left floating body, a right floating body, a lateral propeller, a telescopic full-revolving propeller and a full-revolving propeller. The movable double-body floating dock has excellent rapidity: when the movable double-body floating dock needs to be arranged at an overseas port or an emergency rescue area, the movable double-body floating dock can rapidly reach a designated area through the double-body design under the floating dock, and related maintenance guarantee tasks are executed; good operability: by arranging a dynamic positioning system, the dock has good operability during marine navigation;accurate positioning requirements:, specifically, when an offshore docking ship needs to dock, due to the influence of offshore stormy waves and water flow conditions, relative movement exists betweena floating dock and a dock repair ship in the stormy waves, collision is likely to happen, operation cannot be conducted, and the docking positioning requirement of a to-be-repaired ship in the opensea can be met through a power positioning system.