407 results about "Navigation safety" patented technology

The invention relates to the field of ship navigation safety, in particular to an intelligent ship berthing assistance system and method based on various sensors. According to the method, the intelligent ship berthing assistance system formed by an information real-time acquisition subsystem (1), a data real-time processing subsystem (2) and an information real-time issue subsystem (3) is adopted, data such as three-dimensional laser-point cloud, video images and environment parameters are acquired in real time through the information real-time acquisition subsystem (1), data real-time processing is carried out through the data real-time processing subsystem (2), the real-time ship distance, the berthing speed, the berthing angle, a wharf and ship three-dimensional model, the video images, the environment parameters, berthing suggestions, warning information and the like needed by ship berthing are acquired and are then issued to a user terminal through the information real-time issue subsystem (3), and therefore intelligent ship berthing assistance is achieved. The intelligent ship berthing assistance system and method are suitable for all sizes of berths and all types of ships and effectively solve the problems of limitation and simplicity of various other existing methods and systems.

The invention provides a local obstacle avoidance considering UUV moving object sliding mode tracking control method, which comprises the steps of detecting position information of a UUV, a moving object and an obstacle in real time, acquiring state estimation of the moving object at the moment k, building a relative motion model of the UUV, the moving object and the obstacle, autonomously switching between a tracking strategy and an obstacle avoidance strategy according to the relative positions of the UUV, the moving object and the obstacle based on the size of the object tracking radius and the obstacle avoidance safety radius, acquiring tracking control deviation according to the measurement feedback of the instruction speed, the course, the UUV navigation speed and the course changing angular speed, and carrying out calculation based on a horizontal plane non-singular terminal sliding mode controller so as to acquire thrust of a UUV propeller and course changing torque of a rudder at the moment k, and executing the above steps in a cyclic manner so as to realize tracking control for the moving object at the next moment. According to the invention, a local planning strategy in the complex environment is combined with a UUV dynamics model, and the tracking accuracy of the moving object is ensured under the premise the UUV navigation safety.

The invention discloses a ship manoeuvring and main propulsion combination control method and a simulation system thereof, and relates to the technical field of ship control. According to course steering order and speed engine order of a ship driver, the control method achieves integrative combined control of factors such as general coordinated ship maneuverability, host performance characteristic, ship loading, marine environment disturbance, safe navigation, economic navigation and the like to motion of the ship and running of a propulsion host; and the simulation system verifies validity of the ship manoeuvring and main propulsion combination control method. The control method and the simulation system have the advantages of improving integral economical efficiency and maneuverability of a ship system, improving control effect on motion of the ship, facilitating safe navigation of the ship, preventing a diesel host from overloading, and improving reliability and economical efficiency of a power device.

The invention relates to a radar video image addition method based on an electronic chart, which comprises the following steps: establishing a coordinate system by adopting a uniform projective mode, and establishing a radar video buffer area according to protective parameters; 2, acquiring radar center position information, and initializing the radar video buffer area; 3, predetermining the geographical range parameters of the display area of the radar video buffer area; 4, predetermining the video processing parameters of the radar video buffer area; 5, predetermining the color display parameters of the radar video buffer area; 6, filling real-time radar video image data into the radar video buffer area; 7, drawing the data inside the radar video buffer area on electronic chart data; 8, updating the geographic position, course information and radar video image data of a ship in real time, and updating the position information and radar video image display of the ship. The radar video image addition method disclosed by the invention fuses the radar video image data and the electronic chart data and can further ensure the navigation safety of the ship by being adopted as an important collision prevention means in the navigation process of the ship.

The invention relates to a remote monitoring system for LNG ships. The AIS system of the LNG ship supervision platform analyzes the AIS message to obtain the information of the supervised ship for positioning, and displays the position of the ship through the electronic chart system; For personnel with different authority, display the corresponding supervision data and query statistics of the ship. The system of the present invention integrates informatization, networking, intelligence and visualization technologies, and can cover the entire LNG ship and the inner sea area of ​​the LNG wharf for remote supervision on LNG ships, achieving remote visual supervision, information collection, paperless office, and all-weather The purpose of supervision is to solve the problems of insufficient functions of traditional monitoring equipment, automatic assessment of the navigation safety of LNG ships, identification of risk sources in berthing, unberthing and unloading operations of LNG ships, AHP, and fuzzy comprehensive evaluation. , maritime affairs, LNG receiving stations and other departments.

The invention discloses a networking navigation radar target tracking system based on data fusion. The system comprises at least one radar front end, at least one radar terminal and an Ethernet. The radar front end and the radar terminal are in bidirectional data transmission through the Ethernet. The radar front end comprises an antenna, a transceiver, a data acquisition module, a signal preprocessor module and a control command processing module. The radar terminal comprises a display unit, a signal processing unit and a control unit. The transceiver generates radio-frequency pulses which are radiated to the space through an antenna. The system belongs to a trace point serial processing centralized data fusion structure, has the features of high fusion precision and small system time delay, and meanwhile, has the advantages of eliminating detection blind areas, improving detection probability and improving tracking performance. After the terminal carries out data fusion and comprehensive optimization processing on the data of the plurality of front ends, the problem of blind area of the single radar due to antenna erection location can be effectively solved, marine target detection and tracking accuracy performance is improved, and navigation safety is guaranteed.

The invention discloses a method and a system for a ship in a bridge area to actively avoid collision based on a laser three-dimensional imaging technique. The method comprises the following steps of S1, enabling the actively avoid collision system to judge whether the ship enters a recognition area or not; S2, enabling a data collection module to collect data, so as to obtain collected data information; S3, enabling a data storage module to store waterway basic information and the collected data information; S4, enabling a data processing terminal to judge navigation opening and track according to the waterway basic information and the collected data information; S5, publishing decision information. The method has the advantages that the relative position between a bridge pier, a navigation beacon as well as surrounding ships and the ship in the inland river bridge area can be accurately judged; by utilizing the collected data information and the accurate bridge pier and navigation beacon position information in an electronic waterway map, the navigation state of the ship is predicted, so as to ensure the navigation safety of the ship in the inland river bridge area.

The invention provides an unmanned vessel ant colony consumption optimal global path planning method based on an electronic nautical chart. The method comprises the steps of 1, processing the electronic nautical chart, wherein after the electronic nautical chart is converted into the form of a file capable of being processed, a feasible area and an obstacle area of a map are determined, a visibility graph method is utilized to find out a set of feasible paths among an initial point, a target point and the vertex of an obstacle, it is guaranteed that the paths do not pass through an unfeasiblearea, and the sailing safety of the unmanned surface vessel is guaranteed; 2, building a motion math model, wherein the motion model of an unmanned vessel is built, and thus the thrust and motion characteristics of the unmanned vessel are grasped; 3, obtaining unmanned vessel data, wherein when the unmanned vessel sails on the water surface, information data like the heading, the vehicle body position and vertical acceleration of the vehicle is obtained; 4, utilizing an ant colony algorithm to search for a track meeting requirements; 5, building an unmanned surface vessel energy consumption model under ocean current disturbance, wherein with the optimal energy consumption being the premise, the ant colony algorithm is improved to obtain the path satisfying safe sailing conditions and having the smallest energy consumption. By comparing the paths under two preconditions, the effectiveness of the designed algorithm is proved.

The invention discloses an anti-collision alarming radar system for ships, comprising a marine radar, an anti-collision alarming device and a three-port adaptor that connects a transmitter/a receiverof the marine radar with a display terminal and the anti-collision alarming device. The anti-collision alarming device comprises a display, an alarming apparatus, a data collecting board and a computer board, wherein the data collecting board is used for collecting detection signals, echo signals and bow signals from the radar to calculate the target distance and the angle and sending frame data formed by radar scan to a computer board; and the computer board is used for extracting the target point track data from the frame data to predict the future trend of target motion by associating and smoothing process via a track association algorithm and to evaluate and judge the risk level of the target in real time and then controlling the display and the alarming apparatus to display information and send the alarm signal. The invention further discloses an anti-collision alarming radar device for ships. The invention can be realized with low cost and is of great importance to ensure safetyof navigation of the ships.

An electric full-circle rotation inboard and outboard (double-motor) contra-rotating propeller propulsion unit is applicable to various small and medium-sized ships and boats, an energy conservation value is increased by 10% to 12%, and navigational speed and propulsion efficiency are improved by about 10%. The electric full-circle rotation inboard and outboard (double-motor) contra-rotating propeller propulsion unit comprises encoders, servo motors, speed reducers and large and small cylindrical gears, a rotary support and a sleeve are connected with a lower box to realize full-circle rotation, a ship can turn around flexibly, the reversing speed of the ship is increased by 1.6 times, and the ship runs safely. Optimal three-dimensional movement efficiency of contra-rotating propellers is realized by the aid of a hydraulic lifting mode or an electric lifting mode. A propulsion unit support is connected with a hull, propulsion force, vibration and impact force are absorbed, and the unit is protected. The front and the back of the lower box are streamline-shaped, the upper section of the lower box is wing-shaped, accordingly resistance is reduced, and the lower box is novel and compact in structure, small in dimension and light in weight. In addition, alternating-current frequency converters or direct-current drivers, a PLC (programmable logic controller) single cable connected with a driving cab liquid crystal display, double-motor double-propeller controllers, full-circle steering wheels and direction indicators are adopted, and double-motor full-circle synchronous electronic omnidistance operation is realized. The electric full-circle rotation inboard and outboard (double-motor) contra-rotating propeller propulsion unit is powered by batteries and emergency generator sets or in a hybrid mode, and zero or low-carbon emission is realized.

The invention discloses a seakeeping unmanned boat provided with a water-surface self-adaptive stabilizer. The unmanned boat adopts the catamaran type and comprises an upper deck, two floating bodiesseparated from the upper deck and the self-adaptive stabilizer; the two floating bodies provide buoyancy for the unmanned boat, are provided with propelling devices and are completely bilaterally symmetric; a tilt angle sensor, an accelerometer and a gyroscope are arranged on the upper deck, are used for acquiring the rotating angle of the upper deck, the angular acceleration prediction and the tendency and are used for transmitting the rotating angle of the upper deck, the angular acceleration prediction and the tendency to a control system in real time; the self-adaptive stabilizer comprisesa suspension system and a balance control mechanism; the suspension system is used for connecting the upper deck and the floating bodies; and meanwhile, the connecting structures of shock absorbers,piston rods and first universal hinges can rotate freely, so that the upper deck is stable. The unmanned boat has the beneficial effects as follows: instability of the unmanned boat during navigationand swinging of the unmanned boat when the unmanned boat is stationary can be effectively reduced, and the navigation safety and the operation stability of the unmanned boat under complex sea conditions can be improved.

The invention discloses an Internet of ships application support platform, comprising a ship end data collection and processing center, a ship shore communication center, a shore base application support platform and a shore end application center. The ship end data collection and processing center comprises a data collection terminal, a server, a ship end application system, a sailing data collection device, an engine room data collection module, a marine environment data collection module and a video data collection module. The ship shore communication center comprises a satellite earth station, a communication satellite, a ship-borne communication terminal and a smart routing terminal. The shore base application support platform comprises a device cloud platform, a data management platform, an information service platform and an integrated management platform. The shore end application center comprises a shore base integrated monitoring system and a ship maintenance service safeguard system. The Internet of ships application support platform plays an important role in ocean ship navigation safety and oil consumption management, the transportation cost and risk are effectively reduced, and the operation and development of ocean ship and goods management business are powerfully supported.

The invention discloses an intelligent ship for arctic navigation. The intelligent ship comprises a voyage data recorder, an alarm management system, an ice load monitoring system, a stress monitoring system, an ice layer thickness and ice condition monitoring system, a longitudinal inclination optimization and navigational speed optimization system, a storage system, a noise and vibration monitoring system and an intelligent management system, wherein the voyage data recorder comprises a wave gauge, an anemorumbometer, a rotational speed meter, a fore-and-aft draft gauge and a satellite positioning receiver, and the alarm management system comprises a fuel thermometer, a fuel mass flow meter and a shaft power meter detection alarm system. A mariner adjusts the floatation condition, navigational speed and course of a ship according to data and information provided by the intelligent systems, so as to avoid icebergs or dangerous sea areas where ice layers are thick during arctic navigation, and then navigation safety is guaranteed; navigation resistance is reduced in ice-free or little-ice sea areas, and then oil consumption is reduced. Meanwhile, the maintenance and repair plan of equipment including a main engine and an auxiliary engine can be adjusted in time according to the monitored operation condition of machinery equipment.

The invention discloses an autonomous obstacle avoidance method for an unmanned boat integrating radar and photoelectric information; the method mainly comprises the following steps of performing obstacle target primary judgment, obstacle target maximum length value calculation, obstacle target secondary judgment, obstacle avoidance model determination, speed and course change quantity optimal solution acquisition, obstacle avoidance ending point determination and the like. According to the method, the radar and the photoelectric equipment are combined to accurately obtain the motion information and the outline information of the obstacle target, and the obstacle avoidance model capable of quantizing the speed and course change quantity of the unmanned boat is given, and then the optimal solution meeting a plurality of conditions including a maritime obstacle avoidance rule is obtained through a particle swarm algorithm; finally, the obstacle avoidance ending time point is determined,and a route is re-planned to move forward to the previous target. According to the method, the obstacle avoidance can be rapidly and safely realized, the running path cannot be wasted, and the intelligent degree of the unmanned boat is improved, and the method can be widely applied to the field of intelligent navigation of military or civilian unmanned boats at the later stage, so that the navigation safety of the unmanned intelligent aircraft in a complex water area is improved.

The invention discloses a dynamic risk management method for a service water domain in vessel traffic. The method is performed according to the following steps of (1), constructing an evaluation indexsystem; (2), establishing an evaluation word set; (3), determining an evaluation index weight; (4), establishing an evaluation model; (5), inputting data; (6), calculating a risk value by means of the evaluation model; and (7), according to an electronic sea chart system, respectively representing a high risk, a middle risk and a low risk by a red color, a yellow color and a green color, and performing relatively visual risk reminding, and supporting decision of an operator. The dynamic risk management method according to the invention focuses on analysis of a real-time traffic flow. The dataof real-time traffic flow come from harbor ship data of a VTS. Risk reminding is performed on on-duty personnel of the VTS in a relatively short time interval. High navigation safety of ships in theharbor is ensured.

The invention discloses a marine target and electronic chart superposition method and a marine target and electronic chart superposition system in an on-board infrared video image. The method comprises the following steps: 1, acquiring and reading the on-board infrared video image; 2, segmenting a marine target in the on-board infrared video image, and positioning the marine target to acquire the position of the marine target relative to the ship; 3, calculating the corresponding geographical coordinates of the marine target according to the ship position of the ship, the real-time course of the ship, the orientation of an infrared thermal imager and the result of the step 2; 4, correcting the target position which corresponds to the marine target by utilizing corresponding AIS data; and 5, superposing the corrected marine target into an electronic chart so as to be displayed in a transparent mode. According to the method and system disclosed by the invention, the marine target and electronic chart in the on-board movable infrared video image are superposed and displayed by utilizing the infrared thermal imager, the detection and behavior identification capacities of seafaring personnel on the target in the seafaring sea area are enhanced, and the ship navigation safety is effectively improved.

The invention relates to a seaway monitoring method based on an electronic chart, which comprises the following steps: 1, establishing a planned sea route; 2, establishing a sea route inspection buffer area; 3, inspecting whether an implicit factor which influences navigation safety exists in the sea route inspection buffer area or not, and marking; 4, travelling all seaway segments, and marking all dangerous seaway segments; 5, modifying the planned sea route according to a sea route inspection result, and storing the planned sea route to a sea route library; 6, carrying out dynamic sea route monitoring on the planned sea route as a main sea route, and establishing a dynamic navigation monitoring buffer area in the navigating process; 7, inspecting whether the implicit factor which influences the navigation safety exists in the dynamic navigation monitoring buffer area or not; 8, judging a current seaway segment, and predicting a next arrived seaway point, and sending alarm information when navigating to a certain predetermined distance from the next seaway point. The seaway monitoring method disclosed by the invention can be used for automatically analyzing the implicit dangerous factor in the navigating process along the planned sea route on the basis of the electronic chart by respectively adopting a static method and a dynamic method, thereby being conductive to ensuring the navigation safety of ships.

The invention discloses an onboard multivariate ocean information collection system, comprising two parts: a software part and a hardware part. The hardware part comprises an FPGA radar collection module, a fish detection sonar collection module, an AIS collection module, a system storage module, a display terminal, an external information collection module, satellite communication, a GPRS wireless module, a navigation radar, a single-beam (multibeam) fish detector, video monitoring, AIS, an aerovane, a temperature and humidity instrument, an atmospheric pressure sensor, a temperature and salinity profiler, a sound velocity profiler, a DGPS and an attitude sensor. The system has the beneficial effects that the fishing boat marine operation, sailing safety and fishery supervision capacity and efficiency are improved, the necessary manpower for ocean environment collection, landform investigation and ocean monitoring is greatly reduced, a practical engineering demand for maritime measurement and control can be satisfied, a technical gap is filled up, and the relatively high social benefits and economic benefits are produced.

The invention which is applicable to the safety field of driving navigation provides a reminding method and a system of driving navigation safety and a reminding device of driving navigation, wherein, the method comprises the following steps: a navigator receives the data being relevant to the physiological characteristics of a driver; the navigator determines whether the driver is under an abnormal physiological state in accordance with the physiological characteristics data received; the navigator, in accordance with the abnormal physiological state and current road conditions, implements corresponding security reminding operations. The invention, by determining the physiological characteristics data of the driver and in accordance with the received current road conditions of the navigator, implements the corresponding security reminding operations, thus effectively preventing the traffic accidents caused by fatigue, physical discomfort and others of the driver.

The invention relates to a method to manufacture double-plate ships with foam plastic. The invention is characterized in that the method comprises the following steps: a twisted steel plate is used between an outside plate and an inside plate of the manufactured double-plate ship; the rust on the horizontal and vertical framework steel plates is removed by adopting the technology of sandblast and so on; adhesive is applied; aged pre-foamed polystyrene grains are filled, and are heated and expanded with high pressure heating steam so as to foam the grains. After the grains are cold, the foam is bonded with and is integrated with a steel structure between the outside plate and the inside plate. After the ship is smashed or strikes aground, the foam plastic inside the outside plate and the inside plate form buffering; the inside plate of the ship is not staved easily; and even if the outside plate is staved in, no water leaks. The invention has the advantages of high sailing safety coefficient of the ship, long service life and convenient corrective maintenance.

The invention discloses an intelligent ship body system which comprises a ship body full-life-cycle management module, a monitoring and auxiliary decision-making module, an execution module and a datamodule. The data module is used for converting, processing and detecting the sensing data acquired by the sensor to form result data; the monitoring and auxiliary decision-making module is used for comparing and analyzing the result data with a set value, and making decision-making suggestions according to abnormal data when the abnormal data appears in the result data; the ship body full-life-cycle management module is used for detecting a ship body structure according to decision opinions and autonomously making a maintenance instruction; and the execution module is used for autonomously making a scheme for executing ship body management and action according to the maintenance instruction and executing the scheme. According to the intelligent ship body system, based on establishment andmaintenance of the ship body database, changes of ship body structure stress can be monitored in real time, abnormalities existing in ship body structure data are analyzed and calculated, potential risks in a ship body are effectively eliminated, and navigation safety is further improved.

The invention discloses a wireless sensor network technology based method for designing an inland-river management information system. The system mainly comprises a shipborne information acquisition and display platform, a water environment acquisition analysis unit, other information acquisition units, a network base station, a middleware system, a local navigation networking management center and an internet management center. In the invention, through arranging a lot of various kinds of sensors on inland ships, on buoys or floats in a navigation channel, on bridges, on elevated antennas and under the inland-river water or on the river bed and through carrying out multi-hops self-organized network by utilizing a Zigbee network communication protocol, a comprehensive and tridimensional monitoring of the inland ships, the navigation channel and the water area can be realized; therefore, the navigation safety of the inland ships and the environmental cleanness of the inland waters can be guaranteed.