19results about How to "Improve navigation safety" patented technology

A navigation light adjustment method and system are disclosed, relating to the field of navigation light technology. The method involves acquiring vessel information and visibility for all vessels within a predetermined water area; determining the vessel density within the predetermined water area based on the vessel information; dividing the predetermined water area into multiple adjustment zones based on the vessel density; calculating the comprehensive navigation condition value for each vessel within each adjustment zone based on the visibility and vessel density; obtaining the navigation routes for each vessel within each adjustment zone; and adjusting the parameters of the navigation lights for each vessel within each adjustment zone based on the navigation routes and the comprehensive navigation condition value. Implementing the technical solution of this application allows for analysis of the surrounding navigation environment and timely adjustment of navigation lights, thereby reducing the probability of vessel collisions.

The invention provides a ship traffic situation awareness method and device, equipment and a storage medium, and the method comprises the steps: obtaining radar features and AIS features of a target ship, and determining an attention weight; according to the time change rate of the attention weight and a time sequence differential error of the radar feature and the AIS feature, constructing a time sequence differential consistency constraint, the time sequence differential consistency constraint being used for forcing the time change rate to be inversely proportional to the time sequence differential error; according to the constructed time sequence differential consistency constraint and the attention weight, generating a fusion feature; and according to the fusion features, ship trajectory prediction of the target ship is generated. According to the invention, by introducing the time sequence differential consistency constraint and delay perception attention module, accurate time alignment and anti-oscillation fusion are carried out on radar and AIS features, and stable fusion features are generated, so that accurate ship trajectory prediction is realized, and situation perception precision and navigation safety are effectively improved.

The invention provides an autonomous decision-making system and method for an unmanned ship, and relates to the field of intelligent control systems. The system comprises a decision-making machine module, a skill application module and a communication interaction module, wherein the decision-making machine module is used for receiving a navigation task instruction from a ground station, determining a corresponding navigation task type based on the navigation task instruction, generating a decision-making control instruction for uniformly scheduling navigation of the unmanned ship, and performing event generation, event judgment and interruption control based on navigation state information in the navigation process of the unmanned ship; the skill application module is used for executing corresponding navigation operation under the control of the decision control instruction, and monitoring and reporting navigation state information in the execution process; and the communication interaction module is used for realizing two-way communication among the modules. The method is used in the autonomous decision-making process of the unmanned ship, and solves the technical problem that when a navigation task is executed in a complex environment in the prior art, people cannot be flexibly simulated for decision-making control.

The sailing warning lamp comprises a guide rail seat, a quick-release handle, a flagpole, a light-emitting portion and a battery bin, the guide rail seat is fixed on a canoe through a screw, a guide rail is arranged in the middle of the guide rail seat in the length direction of the guide rail seat, the quick-release handle is fixed on the guide rail through a T-shaped screw, and the flagpole is fixed on the battery bin through the T-shaped screw. A flagpole is fixedly connected to the upper portion of the quick-release handle, a light-emitting part is arranged on the top of the flagpole, a battery bin is arranged in the light-emitting part, and the flag is arranged on the flagpole. The guide rail seat is matched with the quick-release handle, the sliding block is moved to the outlet along the guide rail and is lifted to finish the disassembly, the operation is simple and convenient, tools are not needed, the flagpole is convenient to store and store after being contracted, the warning effect is enhanced through the combined design of the flag and the light-emitting part, and particularly under the condition of insufficient light or severe weather, the flagpole can be conveniently disassembled. Daytime visibility can be improved through the visual mark of the flag, and night navigation safety can be guaranteed through light signals of the light-emitting part.

The utility model belongs to the technical field of shipping detection, and aims to provide an inland river shipping rudder hand-leaving detection system, which comprises a rudder pressure detection module, a linear voltage conversion module, a main control module and an alarm module, and is characterized in that the rudder pressure detection module is electrically connected with the main control module through the linear voltage conversion module; the alarm module is electrically connected with the main control module; wherein the rudder pressure detection module is arranged on a rudder and is used for detecting the pressure of the rudder and outputting a pressure detection signal to the linear voltage conversion module; the linear voltage conversion module is used for converting the pressure detection signal into a voltage signal and outputting the voltage signal to the main control module; the main control module is used for judging whether the rudder is in a hand-off state or not according to the voltage signal and outputting an alarm signal to the alarm module when judging that the rudder is in the hand-off state. According to the utility model, the operation state of the rudder can be monitored in the ship operation process, and an alarm system can be triggered in time when a sailor slips out of the hand, so that the sailing safety can be improved.

The invention provides a ship infrared target detection method in a low-visibility scene, and the method comprises the steps: collecting ship infrared target images and video data under multiple working conditions, and building a sample library containing environment metadata; gamma transformation and preprocessing are carried out on the collected ship infrared target image and video data so as to improve the separability of a low-contrast area; performing screening and labeling operation on the preprocessed ship infrared target image and video data; an improved AFPN-P345 neck network is adopted to carry out adaptive cross-layer feature fusion, and a redundant branch is skipped in combination with a lightweight dynamic routing mechanism; dW-RFAConv is used for replacing standard convolution, and the spatial local feature modeling capability is enhanced; partial overlap penalty, centroid distance penalty and shape difference penalty are introduced on the basis of IoU, and a PD-ShapeIoU positioning loss function is constructed for training a detection head; and outputting the category, the position and the confidence coefficient of the ship target through a multi-scale detection head, and completing real-time detection.

The invention discloses a marine hybrid power integrated device with multiple planetary gear sets and axial flux motors and an energy management method, and the core innovation of the device system is that rotor output shafts of a plurality of high-power axial flux motors are coaxially, rigidly and directly connected with sun gear input shafts of corresponding planetary gear sets through flange plates; the energy management method is characterized in that a whole ship controller integrates the real-time storage amount of hydrogen ammonia fuel and the hydrogen production rate on the ship, and the energy management efficiency is improved. And the output of the high-power hydrogen fuel cell and the output of the high-power solid-state energy storage cell are subjected to prospective dynamic distribution, and the state of a fuel supply chain is brought into a power control closed loop, so that compact integration, stepless smooth speed regulation and global energy efficiency intelligent optimization of a large-wheel multi-source power system are realized; and the power system is particularly suitable for green zero-carbon technical transformation of an ultra-large ocean-going wheel power system with extremely high requirements on endurance and power.

This invention relates to the fields of marine meteorology and navigation, and discloses a method for predicting meteorological factors for ship navigation based on marine meteorological information. This method is used to predict meteorological factors for ship navigation, assess navigation risks, and plan alternative routes. The method includes processing meteorological data and ship data for a target sea area to obtain historical meteorological time series and ship motion response sequences; constructing state vector trajectories of meteorological factors using historical meteorological data, establishing a dynamic model library, and obtaining the ship motion response function to meteorology based on meteorological and motion response data; generating deterministic meteorological factor prediction sequences by embedding the current meteorological state into the dynamic model; and constructing stochastic differential equations to generate probabilistic prediction distributions of meteorological factors. This invention integrates data-driven and physical constraints, providing more comprehensive navigation decision support.

The utility model provides a kind of intelligent water surface garbage cleaning ship, belong to water surface garbage cleaning, resource recovery field.Motor is installed on hull, drive helical blade rotation, control system controls the direction and speed of hull operation, collection wheel is connected with the front part of hull by connecting piece, can rotate on water surface, collect water surface floating garbage;Conveying structure is installed in the front part of hull, cooperates collection wheel, and conveys collected garbage;Crushing mechanism is installed in the middle part of hull, receives the garbage transported by conveying structure and is crushed, one end of spiral conveying mechanism is connected with crushing mechanism, the other end is connected with storage mechanism, radar real-time monitoring environmental condition around hull, timely discovers obstacle and sends signal to control system, solar panel converts solar energy into electric energy, provides clean energy for each electric component in cleaning ship.The utility model can be used in lake, river and other water area, realizes efficient, autonomous garbage cleaning, reduces energy consumption and carbon emission, accords with environmental protection concept.

This invention relates to a control device for a wing sail of an unmanned surface vessel (USV), comprising a structural component, an adjustment component, and a rotational speed monitoring mechanism. The structural component includes a frame assembly and a wing sail. The wing sail is disposed on one side of the frame assembly, and the adjustment component is disposed inside the frame. The adjustment component is connected to the rotational speed monitoring mechanism and can adjust the orientation of the wing sail. The adjustment component includes a position control element, a clutch mechanism, and a locking mechanism. The position control element controls the states of the clutch mechanism and the locking mechanism. By utilizing external airflow as the driving force for wing sail steering, no additional power input is required. The adjustment and locking / unlocking control of the wing sail orientation are achieved only through low-power control components, thereby reducing the energy consumption of the USV and improving the convenience of steering control.

The invention discloses a dynamic obstacle avoidance planning system and method based on camera and laser radar fusion. The system comprises a sensor data acquisition module, a point cloud clustering and acceleration module, a coordinate system calibration and time synchronization module, a multi-sensor information fusion module, a vehicle dynamics modeling module, an improved TEB path planning module and a motion control execution module. According to the invention, through multi-sensor fusion of the camera and the laser radar, and in combination with European clustering and KD-tree acceleration technologies, accurate recognition and semantic classification of obstacles are realized, the sensing limitation of a single sensor is made up, and the accuracy and integrity of obstacle recognition in a complex park environment are improved; risk grading is carried out based on the semantic information of the obstacles, a stricter obstacle avoidance strategy is adopted for the high-risk obstacles, the safe driving behavior of a human driver is simulated, the accident occurrence probability in a high-risk scene is effectively reduced, and the navigation safety of the unmanned logistics vehicle is improved.

The application belongs to the field of underwater vehicle control, and relates to a physical information driven AUV near-surface stealth navigation control method and system. First, by constructing a dynamic extended state observer, the influence of near-surface fluid effects on the vehicle can be represented in the form of target heave disturbance force and target roll disturbance moment, wherein the calculation formula of the target roll disturbance moment can obtain preset parameters through computational fluid dynamics simulation and real ship test of the vehicle model, and then the dynamic safety boundary of the vehicle can be obtained to improve the safety of the vehicle. Secondly, by obtaining the expected pitch angle, the actual pitch angle speed, the deviation of the expected pitch angle speed, the target roll disturbance moment, the deviation of the actual pitch angle and the expected pitch angle, and the dynamic residual disturbance of the physical information measured or simulated, the target elevator deflection angle can be obtained, and the control accuracy and navigation stability of the vehicle in the complex flow field interference scene can be improved.

The application provides a ship traffic situation awareness method, device, equipment and storage medium, the method comprises: obtaining the radar feature and AIS feature of the target ship, and determining the attention weight; constructing a time differential consistency constraint according to the time variation rate of the attention weight and the time differential error of the radar feature and the AIS feature, the time differential consistency constraint is used to force the time variation rate to be inversely proportional to the time differential error; generating a fusion feature according to the constructed time differential consistency constraint and the attention weight; generating a ship trajectory prediction of the target ship according to the fusion feature. The application introduces a time differential consistency constraint and a delay perception attention module, accurately aligns and anti-oscillation fuses the radar and AIS features, generates stable fusion features, and then realizes accurate ship trajectory prediction, effectively improves the situation awareness accuracy and navigation safety.

The application discloses a combined marine propelling device, which comprises a device main body, a planetary gear mechanism, a quick-release mechanism and an anti-winding mechanism, wherein the planetary gear mechanism is connected with a power source input end of the device main body through a transmission shaft, the quick-release mechanism is embedded in a component connecting position of the device main body, and the anti-winding mechanism is fixed around a blade outer peripheral area of the device main body. The anti-winding mechanism is fixed around the blade outer peripheral area of the device main body, a fixed cutter is fixed on the outer periphery of a blade mounting base through welding, and a cutting cutter is mounted on one end of the device main body. The connecting mode can effectively prevent sundries in water from winding around the blade, so that the normal operation of the propelling device is ensured, and the sailing safety of a ship is improved.

The application discloses a kind of offshore traffic network mining method, belong to offshore traffic field, comprising the following steps: S1, obtain standardized feature matrix, ship trajectory set and meteorological disturbance coefficient;S2, based on standardized feature matrix, AIS data, ship static parameter and wind farm data, fusion ship 3D safety area parameter and adaptive graph learning, construct 3D space constraint offshore traffic dynamic graph;S3, based on offshore traffic dynamic graph, fusion Patch-Transformer time series coding and information geometry multi-object coupling, obtain global spatiotemporal correlation matrix and key correlation path;S4, based on the feedback of key node and path, global spatiotemporal correlation matrix is corrected by iterative optimization.Using the offshore traffic network mining method described above, global spatiotemporal correlation can be accurately captured and key correlation path can be efficiently identified, improving the dynamic adaptability of network mining and decision support value.

This utility model relates to the field of marine equipment technology and discloses an automatic sail retraction device for sailboats, including a sail installed on the hull, a retraction mechanism, and a guide mechanism. The retraction mechanism includes a sail winder for winding the sail and a winch for pulling the sail via a connecting rope. The core of the device is the guide mechanism, which includes a connecting block fixed to a support plate and a guide rod movably inserted within the connecting block. A compression block and an elastic gasket are provided within the receiving cavity of the connecting block, with the compression block abutting against the guide rod. When the sail impacts the guide rod during retraction or extension, the impact force compresses the elastic gasket through the compression block, and the deformation of the elastic gasket absorbs the energy, achieving flexible buffering. This utility model, through this built-in elastic buffer guide structure, solves the problems of existing rigid guides that easily lead to sail wear and unstable movement, achieving stable guidance, sail protection, extended service life, and improved automation level and navigation safety.

This invention relates to the field of marine engineering, specifically to a dual-propulsion automatic righting boat structure, comprising a hull and an antenna. The antenna is located on the top of the hull and is used to receive remote control signals and transmit the signals to various actuators on the hull to control propulsion, steering, and automatic righting. A ducted propulsion unit is installed on the top of the vertical stern of the hull and is used to provide auxiliary thrust by jet propulsion. A rudder unit is installed at the center of the vertical stern of the hull and is located below the ducted propulsion unit. By adjusting the steering angle in conjunction with the jet thrust of the ducted propulsion unit, it enables stable navigation and automatic righting of the hull. A jet pump propulsion unit is installed at the bottom of the vertical stern of the hull and is embedded inside it, and is used to provide forward thrust by jet propulsion. This dual-propulsion automatic righting boat structure, through the dual design of the ducted propulsion unit and the jet pump propulsion unit, can flexibly switch between above-water and underwater propulsion modes.