48 results about "Ship routing" patented technology

A method, apparatus, and computer program product are present for generating a route for a ship. A start point and an end point are identified for the ship. A number of forecasts of weather conditions is obtained for a period of time to travel from the start point to the end point. A probability of reaching the end point from the start point is generated for a number of routes from the start point to the end point for the ship within the period of time using the number of forecasts of weather conditions to form a number of probabilities.

The invention provides a comprehensive evaluation index system of a ship routing scheme and a combined evaluation method thereof. The comprehensive evaluation index system comprises a quantitative index and a qualitative index, wherein, the quantitative index comprises an efficiency index and the qualitative index comprises a safety index and a performance index. The combined evaluation method comprises the following steps: determining a qualitative evaluation index value by a group decision making method; determining a quantitative index value of the scheme by an entropy method and a fuzzy analytic hierarchy process (FAHP); and realizing ordering and optimization of the scheme based on a technique for order preference by similarity to ideal solution (TOPSIS). Compared with the traditional comprehensive evaluation index system of the ship routing scheme and the evaluation method thereof, the comprehensive evaluation index system and the evaluation method thereof of the invention increase analysis evaluation of the quantitative index, thus the index system is more complete; and by combination of quantitative evaluation and qualitative evaluation, expert knowledge is integrated into the decision-making process preferably, thus being more practical and more flexible.

A computer-implemented method is disclosed for determination of a route for a ship by defining one or more performance variables of the ship and dynamic input parameters that affect to the performance variable. Information of ship operation and measurement results from sensors during the operation of the ship are obtained and a set of dynamic input parameters is produced. A model for simulating the performance of a ship is created by defining one or more relationships between the performance variables and the dynamic input parameters. A route is found for which a simulation result of the ship performance fulfills one or more criteria set for the selected performance variable. The results are continuously updated along with receiving new input data for determination of a route having better conformity with set criteria for the result.

A ship route recommendation method comprises the steps of obtaining AIS historical data of a ship, screening a mileage and speed optimal value route according to port information, ship information, time information, meteorological information and crossing nodes of the ship, and recommending the optimal route. The recommendation method further comprises the steps of restoring a ship trajectory on an electronic chart according to the AIS historical data, predicting a ship route comprising the navigation destination in real time by utilizing a recommendation and trajectory restoration algorithm,and dynamically updating the prediction result in time based on the actual operation data of the ship.

The invention discloses a ship path planning method based on a ship trajectory and an ant colony algorithm, a clustering object is changed from a point to a track segment, information of the track segment relative to a trajectory point, a ship course, a ship speed and the like is reserved, and a clustering result is more accurate during clustering. In similarity measurement, similarity measurement calculation is carried out by adopting more multi-dimensional angles, and four dimensions of a horizontal distance, a vertical distance, a steering angle and a speed are considered. Thus, the overall clustering result is more accurate. According to the method, an improved DBSCAN algorithm is used, information such as the speed and the direction contained in a ship track is reserved, and meanwhile the clustering speed is increased. According to the improved ant colony algorithm provided by the invention, experiments show that compared with the previous ant colony algorithm, the ant colony algorithm suitable for ship route planning provided by the invention improves the convergence speed when solving the problem of ship route planning.

A ship optimal route automatic generation method based on AIS big data belongs to the technical field of big data mining, can solve the problem that an existing method cannot be applied to actual ship route planning and the like, and comprises the following steps: firstly, preprocessing massive historical AIS data, then introducing ship static data; adding ship draft in distance measurement to perform similarity measurement on AIS data; then using an improved adaptive clustering algorithm to perform clustering on ship track clusters until subclass clusters are single; and finally, using a main navigation route extraction method to extract a main navigation route from the clustered subclass clusters to realize automatic generation of an optimal ship route. The ship motion track is analyzed and processed based on historical AIS big data, the thought of referring to the specific navigation experience of other ships during ship route design is met, the new route planning method is provided, the main navigation route can be accurately extracted, and ship route planning can be provided for ships with different characteristics.

The invention relates to the technical field of Yangtze River digital navigation channels, and provides a ship route prediction method based on ship trajectory clustering so as to improve the accuracyof ship route prediction. The method comprises the following steps of obtaining the ship trajectory data of a target ship in a navigation channel, and pre-processing the missing values, abnormal values and data formats existing in the ship trajectory data; obtaining a high-quality historical route data set of the ship; clustering the historical routes of the predicted ship, extracting typical characteristic routes of the ship sailing in a control reach, matching the current track of the ship with the characteristic routes, predicting the route selected by the ship for passing through the control reach, and calculating the ship passing time based on the predicted route.

The invention discloses a water-borne traffic conflict data automatic acquisition method for a ship routing scheme warning region. The water-borne traffic conflict data automatic acquisition method is characterized by comprising the steps of: analyzing ship collision risk degree influencing factors, determining water-borne traffic conflict parameters according to a ship automatic identification system AIS, acquiring water-borne traffic conflict data samples of the ship routing scheme warning region, and establishing an SVM classification model; and embedding a libsvm software package into an electronic chart display and information system ECDIS program in a VC++ 6.0 environment, importing the SVM classification model, and judging and recording ship collision risk degree data in the region pairwise in real time. The water-borne traffic conflict data automatic acquisition method has the advantages of realizing judgment of water-borne traffic conflict and severity degree thereof, recording the parameters when the conflict occurs, and making statistics of traffic flow, flow direction and the like in the whole warning region.

The invention discloses an inland water network route planning method and a ship route planning handheld terminal APP based on the inland water network route planning method. The inland water networkroute planning method is realized through a computer system which is composed of a relational database, a server and a front-end database, and comprises the following steps that S1, a route is dividedinto a plurality of route segments through nodes which can be used as route starting and ending points such as route intersection points and docks; S2, segment information is stored into the relational database, and a corresponding water network is enabled to form a directed topological network; and S3, a starting point and an ending point are selected in the formed directional topological network, the segment data are systematically traversed, and an optimal route is planned for a ship to safely pass through by comparing the own conditions of the ship with channel conditions. By comparing channel information with ship information, the optimal route is intelligently planned for the ship, and the navigation aid service is provided for the ship through the handheld terminal APP based on anelectronic channel chart so as to better ensure the navigation safety of the ship.

The invention discloses an RFID technology based ship collision avoidance system, which comprises an RFID electronic tag, an RFID reader and a server, and is characterized in that the RFID electronic tag is embedded with an integrated circuit chip, and the RFID electronic tag is installed on a ship; the RFID reader is installed on a water surface base station or a ship lock, and is used for acquiring ship information in the RFID electronic tag and transmitting the ship information to the server; and the server receives the ship information uploaded by the RFID reader, carries out processing on the ship information and sends a feedback to the ship. The beneficial effects lie in that real-time monitoring for multiple targets can be realized by RFID technologies, real-time monitoring can be carried out on ship ID information, ship owner information, the ship speed, the ship width and loading information through the RFID reader deployed on the water surface base station, a warning can be sent to the ship when the distance between adjacent ships reaches a safety warning distance, and the system can report to a supervision department in time when the ship has a collision accident. The system disclosed by the invention can carry out monitoring on the ship information actively, management is carried out automatically, and ship routing and accident processing are facilitated.

A method for navigating a ship through seas with ice includes: determining a route of the ship through a portion of a sea starting from a departure location and ending at an arrival location; rendering a digital ice layer of the portion of the sea using at least one satellite captured image; overlaying the digital ice layer on a geographical map of the portion of the sea, thereby generating an overlaid geographical map; mapping a plurality of waypoints using the overlaid geographical map, wherein the plurality of waypoints navigate around ice of the digital ice layer along the route; transmitting coordinates of the plurality of waypoints to the ship; and piloting the ship along the route from the departure location to each of the plurality of waypoints and to the arrival location.

The embodiment of the invention provides a navigation trajectory prediction method, a computer storage medium and a program product. The navigation trajectory prediction method comprises the steps that port position data and historical ship route data are acquired, and the historical ship route data comprise historical navigation trajectory points of a ship; according to the port position data, historical navigation track points matched with the port position are determined from the historical ship route data; the historical navigation track point matched with the port position is used as an end point, the historical ship route data are segmented, and historical route data marked with a historical departure port and a historical destination port are obtained, so as to determine a historical departure port the same as the current navigation departure port of the target ship, and the navigation trajectory of the target ship is predicted according to the historical route data corresponding to the historical departure port.

The invention discloses a ship driving route recommendation method and system. The method comprises the following steps: S1, deploying an acquisition device at each key point of a navigation channel;S2, a collection device collecting picture information of the ship in a continuous time period in the navigation segment of the target navigation channel; S3, constructing a detection and tracking model based on deep learning according to the acquired ship picture data, and performing model training; s4, according to the trained model, detecting and tracking the ship in the navigation channel segment, and drawing the moving track of the ship; and S5, in combination with the water level and meteorological data, performing statistics on the ship running track within a period of time to obtain anoptimal navigation route, and performing information release through the system to provide recommended navigation route information for shipping management departments or the public using navigationchannels. The system comprises an acquisition device, a processing module, a display terminal, a data center and a switch, and efficient ship route recommendation and monitoring are achieved.

The invention discloses an automatic ship route planning and evaluating method based on a marine environment map layer. According to the method, marine environment information and ship characteristicsare integrated for route planning, firstly, the marine environment information is extracted, a gridding marine geography, hydrology and meteorology layer library and a data field model are constructed, and effective reorganization and storage of environmental data are completed; determining a grid safety level and a navigation impeding area according to ship parameters and safety navigation requirements; designing a direction function, proposing automatic grid search based on the direction function, realizing automatic route planning and generation, and performing route optimization by usinga genetic algorithm method; and finally, constructing three index models such as an air route voyage, an air route risk degree and navigation energy consumption to perform air route evaluation, and giving an air route efficiency value. According to the method, the automatic ship route planning, generating, optimizing and evaluating capacity in the complex marine environment can be effectively improved, the navigation efficiency is improved, the navigation risk is reduced, and technical support can be provided for a new generation of intelligent ships and unmanned ships.

The invention provides a ship route extraction method combining a ship journey semantic object and a graph theory, which is suitable for ship information detection. According to the method, space-time restriction conditions of ship activities are comprehensively considered, a navigation route of a main traffic mode of a ship is generated to represent a navigation channel of a real world, AIS data analysis and information mining are guided by rules and characteristics of the ship activities, a'stay-route-stay 'ship journey semantic model is established, and extraction from a space-time trajectory to a semantic trajectory is realized. According to the method, on the basis of a graph theory, a marine transportation route recorded in AIS data is regarded as a composition of feature points and connecting lines, rapid extraction and low-dimensional representation of a large-area marine transportation route are carried out, and simple and effective extraction of the ship route in a large-range sea area is realized.

The invention discloses a real-time optimal ship navigation route planning method based on an improved genetic algorithm. The method comprises the following steps: 1, constructing a flow field database; 2, carrying out real-time channel hydrological element calculation; 3, calculating the resistance of the airline; 4, generating an orthogonal body-fitted grid, and establishing a planning background for route planning; 5, optimizing a route set based on an improved genetic algorithm; 6, judging whether the steering angle of the course is greater than a ship allowable steering angle threshold, if so, entering 7, and otherwise, entering 8; 7, deleting the route; 8, keeping the route; 9, updating the route set; and 10, obtaining the route which meets the ship route constraint conditions and has the shortest actual navigation path and the minimum resistance. According to the optimal route planning method with minimum ship sailing resistance and shortest sailing mileage based on the improved genetic algorithm, the influence of channel water flow conditions, ship characteristics and the like on sailing can be fully considered, and a real-time optimal route meeting sailing conditions is designed.

The embodiment of the invention provides a channel prediction method and device for pre-deployment of a mobile air base station. The method comprises the following steps: constructing a three-dimensional environment model at a to-be-predicted moment according to environment data at the to-be-predicted moment and behavior data at the to-be-predicted moment; and configuring communication parametersin the three-dimensional environment model at the to-be-predicted moment, and obtaining channel parameters at the to-be-predicted moment through a ray tracing method. The space-time correlation of marine environment information and ship route information are utilized to predict marine environment changes, so that a predicted three-dimensional environment model is constructed, and channel parameterinformation is estimated in the predicted three-dimensional environment model. The channel prediction method effectively adapts to the change of a marine environment.

The invention discloses a ship route planning method and device, electronic equipment and a storage medium. According to the invention, the navigation chart and the meteorological data corresponding to the navigation chart can be obtained; the navigation chart is rasterized to obtain a grid chart which comprises a plurality of grids; based on the meteorological data, obstacle identification processing is carried out on the grids to obtain an identified grid nautical chart; and route planning is performed based on the identified grid chart to obtain a ship route. According to the method and the device, the sailing sea chart is rasterized, the obstacle grids which cannot sail are identified based on the meteorological data, and the ship route is planned according to the identified grid sea chart, so that the sailing route can be optimized on the premise of ensuring the safety of the ship. According to the scheme, the safety and efficiency of ship navigation can be improved.

The invention discloses a method for optimizing a ship routing system warning region based on 0-1 integer programming, comprising the following steps: (1) setting a plurality of sectional points to obtain AIS (Automatic Identification System) data distribution of ship flow; (2) obtaining each sectional point and average daily flow from the sectional point to each wharf; (3) setting the positions of warning regions; (4) initializing the number of the warning regions and the preset space lengths of the warning regions; (5) routing the relationship between the ship tonnage and the ship total length in various ship sizes in the statistic flow; (6) building a ship routing scheme; (7) calculating equivalent lost mileage and average mileage generated by circumambulation; (8) calculating average cargo dead weights of a ship on a main channel and a branch channel; and (9) calculating the good transportation lost mileage or equivalent lost mileage of the passing ships. Ships can move within the solution space of the preset warning region with an optimized decision method provided by the invention so that excellent search capability on the optimal solution is obtained.

The invention discloses an unmanned ship routing inspection device for an offshore wind power plant and a method thereof. The unmanned ship routing inspection device comprises an unmanned ship body, a stabilizing mechanism, and a cleaning mechanism; the stabilizing mechanism comprises a transparent cover, a camera and a supporting component, the transparent cover is fixedly connected to the top of the unmanned ship body, the supporting component is arranged in the transparent cover, the supporting component is arranged at the top of the unmanned ship body, and the camera is arranged on the supporting component; according to the cleaning mechanism, a fixing motor rotates to drive a cleaning rod to rotate on the transparent cover for cleaning, meanwhile, a water pump conveys water to the cleaning rod, the transparent cover can be cleaned, and through cooperation of a supporting rod, a fixing ring and a fixing base, the situation that a camera swings greatly, the transparent cover is dirty, and the shooting effect is affected can be avoided; and through quick rebounding of mounting springs and fixing springs, a breathable plate is quickly restored to the original shape, the stability of internal devices is improved, and the air circulation speed is increased through rotation of a fan to dry the interior of the unmanned ship body.

The invention discloses a riverway bubble vortex structure identifying method, which comprises the following steps: 1) acquiring image data of a riverway water surface through a camera, performing preprocessing and calculating a single-frame pulse velocity field of the water surface; 2) determining a current bubble vortex center position according to divergence characteristics of the single-framepulse speed field; and 3) filtering the divergence field of the bubble vortex region by adopting a standardized bubble vortex velocity field template, and selecting a proper threshold to extract the bubble vortex region to obtain a current bubble vortex edge range. The invention also discloses a riverway bubble vortex structure identifying and tracking method based on the identifying method, and ariverway navigation early warning method. The method can be well applied to large-scale natural river bubble vortex structure identifying and tracking calculation, so that the process convenience andhigh efficiency of bubble vortex structure measurement and analysis are improved, the motion and distribution of the bubble vortex flow state hindering navigation in a river channel can be rapidly obtained, and a powerful support is provided for ship route planning and safe navigation.

The invention provides an AIS-based ship navigation process meteorological sea condition data fusion processing system and method, and the method enables the meteorological sea condition on a ship route to be mastered at any time in a return visit process through the superposition of the meteorological sea condition data in the ship historical trajectory playback. And a reference basis is provided for ship course behavior analysis, ship distress reason analysis and the like under meteorological sea conditions. In ship route planning, meteorological sea condition forecast data of 72 hours before and meteorological sea condition forecast data of 14 days in the future are superposed, so that the meteorological sea condition possibly faced on the planned route in the future can be mastered at any time when the route is drawn, and further the influence possibly brought by extreme weather on navigation can be avoided in advance, thereby ensuring the navigation safety.

The invention discloses a ship route extraction and trajectory classification method based on AIS data. The method comprises the steps of AIS data preprocessing, sea area route extraction and trajectory classification. Historical AIS data in a target sea area is processed and analyzed, and an effective driving track of a certain type of ships is obtained. And analyzing route information contained in all the effective tracks, obtaining road sign points of the route through a method of clustering DBSCAN on different fields in two steps, describing the distance between the road sign points by using a self-defined weighted distance function, and connecting the adjacent road sign points to obtain the route information. And finally, calculating a Directed Hausdorff distance by using the obtained route and the ship trajectory to realize trajectory classification work. According to the method, the efficiency of route calculation is improved, meanwhile, good robustness is achieved, and particularly, the method is more excellent on a large-scale AIS data set.

The invention relates to a ship route planning management method. The method is characterized by comprising the following steps of: 1) acquiring real-time data, acquiring weather and traffic information of a nearby sea area according to the actual demand of a user, and synchronizing the acquired information into a background information base; 2) fixed information acquisition: acquiring information of a port and an obstacle area in a specified target sea area according to radar, and synchronizing the acquired information to a background information base. According to the scheme provided by the invention, through the radar, wireless communication equipment and the background information base, information required by ship route planning can be collected, processed and analyzed, so that a ship route can be planned according to all the information after integration and analysis in the advancing process of a ship, the problem that the ship is easily affected by various factors in the advancing process due to the fact that a traditional ship does not have safe and intelligent route planning can be effectively solved, it is ensured that the ship can sail according to the safe route, and the safety of the ship in the sailing process is improved.

The invention provides a ship route identification method and device, electronic equipment and a storage medium, wherein the method comprises the steps of constructing a digraph based on the port historical attachment data of a target ship, and obtaining a first set and a second set based on the digraph; and based on the first set and the second set, obtaining the route of the target ship. According to the ship route identification method and device, the electronic equipment and the storage medium provided by the embodiment of the invention, the directed graph is constructed through the port historical attachment data, the strongly connected components and the rings in the directed graph are extracted, the route of the target ship is obtained based on the first set formed by the strongly connected components and the second set formed by the rings, the ship route can be identified more efficiently, accurately and timely, the route of any container in the world can be dynamically mined, the global container route can be more conveniently subjected to multi-dimensional analysis, and the change of the ship running route can be dynamically mined.

The invention provides a ship route determination method and device and electronic equipment, and the method is applied to a server, and comprises the steps: obtaining a plurality of to-be-selected routes of a target ship; taking each to-be-selected route as the current to-be-selected route, and executing the following steps: calculating the total energy consumption of the target ship when the target ship sails along the current to-be-selected route according to the marine environment post-report data corresponding to the sea area passed by the current to-be-selected route; and determining the to-be-selected route corresponding to the minimum total energy consumption in the plurality of to-be-selected routes as the optimal route corresponding to the target ship. According to the method, the optimal route can be determined based on the accurate marine environment post-report data, the accuracy of ship route optimization is improved, the operation cost of a ship owner is reduced, and the operation efficiency is improved.

The invention provides a route path updating method. The route path updating method comprises the following steps of S1, continuously receiving the Beidou positioning information; S2, determining an environment state; S3, calculating a first prediction trajectory in a first time interval; S4, comparing the Beidou positioning information in the first time interval with the first prediction trajectory, and judging whether the course adjustment is performed or not; and S5, if the route adjustment is determined, taking the Beidou positioning information as the path information in a first time interval; otherwise, comparing the difference value between the Beidou positioning information at each moment and the first predicted trajectory information, and if the difference value between the Beidou positioning information at the moment and the first predicted positioning information is smaller than the drift coefficient, taking the Beidou positioning information as the positioning information at the moment; and otherwise, taking the first predicted trajectory information at the moment as the path information at the moment. According to the method, technical problems of poor continuity and low real-time performance of existing path updating communication are solved, and accurate monitoring of the ship route path is realized.