CN113918619B - Ship pre-support port identification method and system - Google Patents
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Abstract
The invention provides a method and a system for identifying a ship pre-support port, wherein the method is used for establishing ship section dynamics based on ship AIS data to establish a ship port attachment historical record, generating matching times based on AIS DEST and ship section attachment to establish an AIS DEST matching record, further establishing a ship pre-support port matching model according to the ship port attachment historical record and the AIS DEST matching record, wherein the model has a potential destination port priority queue with a specific priority, and acquiring ship navigation pre-support data according to an optimal destination port identified by a model matching result. When the destination port in the AIS data is not clear or ambiguous, the real ship sailing destination port can be reflected better, the recording parameters and the model parameters can be optimized after the ship is hung up, the correct matching rate can be higher and higher along with the increase of the data quantity and the increase of the matching quantity, and compared with the prior art, the method has higher feasibility and accuracy.
Description
Technical Field
The invention relates to the technical field of shipping informatization and intellectualization, in particular to a method and a system for identifying a ship pre-support port.
Background
The identification of the pre-support port, also called the identification of the ship navigation destination port, is a very challenging and non-negligible link in the process of ship digitization and intelligent shipping, in addition to the container shift with clear shipping date information, how to identify the destination port of various ships such as dry bulk cargo, liquid bulk cargo, special ships and the like which are navigating in the world. At present, the research on the department of pre-defense port focuses on AIS real-time data, and the AIS DEST is identified by various means including technologies such as pinyin identification and machine learning to judge the destination port. There are also a small number of studies that use big data techniques to find laws by analyzing historical lane data. The method is represented by an AIS data-based rapid pre-arrival ship contact information query method in the 3 rd volume and the 4 th volume of the book 3l of the Shanghai university of maritime affairs, 2010 and an AIS pinyin ship name-Chinese character intelligent translation technology in the university of great concateurs affairs, 2020 and 46(02) respectively, and the algorithms or academic papers mainly have the following problems:
1. only AIS data is relied on for destination port matching, data errors are conductive, a certain tiny error can cause a complete error of a result, and the most important step, namely AIS data cleaning, can be omitted in the matching process by the scheme;
2. the AIS data may be misleading, ship management personnel behavior habits may cause complete errors in matching of sailing destination ports, when the ship arrives at a port, in order to ensure that the safe ship reports an accurate AIS destination port, the AIS destination port may not be changed when the ship leaves the port, at the moment, the destination port reported in the AIS is still the destination port when the ship arrives at the port, and the analysis affirmed error based on the AIS data is very large;
3. ships which do not fill in the destination port can be directly removed, and a potential destination port can be obtained through AIS (automatic identification system) track and historical departure port analysis according to different ship types and loads;
4. the method stays in analyzing static data and does not have the functions of repeated deduction and hypothesis testing.
Disclosure of Invention
The invention provides a ship pre-support port identification method aiming at the problems that the existing pre-support port identification technology relies on AIS data with error conductivity and the like. The model is based on the originating port information and the real-time AIS DEST information as input, multi-level progressive identification is executed through a priority queue in the process, and finally the destination port with the highest matching degree is returned. The invention also relates to a ship pre-support port identification system.
The technical scheme of the invention is as follows:
a ship pre-support port identification method is characterized by comprising the following steps:
constructing ship voyage section dynamics based on ship AIS data, and establishing ship port attachment historical records by utilizing the dynamics;
according to the AIS DEST records of the ships and the final port of the ships, the ships are arranged in a reverse order according to the matching times, and AIS DEST matching records are established;
constructing a ship pre-support port matching model according to the established ship port attachment history record and the AIS DEST matching record, wherein the ship pre-support port matching model is provided with a potential target port priority queue with priority, the priority queue comprises an intersection taken by the ship port attachment history record and the AIS DEST matching record, the AIS DEST target port is matched by the same type of ship according to the AIS DEST matching record when the intersection is not achieved, and the target port attachment times in the current departure port section according to the ship port attachment history record when the AIS DEST target port is matched by different types of ships and/or the AIS DEST target port is matched by the ship not to be intersected; and acquiring the pre-support data of the ship navigation according to the optimal destination port identified by the matching result of the ship pre-support port matching model.
Preferably, the priority queue in the constructed ship pre-support port matching model sequentially matches intersections obtained by the ship port attachment history record and the AIS DEST matching records according to the level from top to bottom, matches AIS DEST target ports according to the same types of ships of the AIS DEST matching records when the intersections fail, matches AIS DEST target ports according to different types of ships of the AIS DEST matching records when the intersections fail, and matches the number of attachment times of the current departure port in the current departure port navigation section and the number of attachment times of the current departure port section in all the ships according to the ship port attachment history record when the intersections fail.
Preferably, the priority queue in the constructed ship pre-support port matching model sequentially comprises intersections obtained by the ship port attachment history records and the AIS DEST matching records according to the levels from top to bottom, the target port attachment times in the current departure port navigation section according to the ship port attachment history records when the intersections fail, the AIS DEST target ports matched by the same type of ships according to the AIS DEST matching records when the intersections fail, the AIS DEST target ports matched by the different types of ships according to the AIS DEST matching records when the intersections fail, and the target port attachment times in the current departure port navigation section in all the ships according to the levels from top to bottom.
Preferably, the current ship date is also obtained, a ship pre-support port matching model is constructed according to the ship date, the ship port attachment history record and the AIS DEST matching record, and the destination port of the container ship obtained by processing the matching logic in the ship date is used as the highest priority of the potential destination port priority queue in the ship pre-support port matching model.
Preferably, the method further comprises the steps of carrying out AIS DEST cleaning on the ship AIS data, generating matching times according to the cleaned ship AIS DEST with unified standards and the ship berth hanging port, and establishing an AIS DEST matching record.
Preferably, the matched optimal destination port is combined to obtain the pre-support data of the ship navigation, the ship pre-support arrival time and the remaining navigation mileage are also analyzed, and the API service is provided for the outside.
A ship pre-support port identification system is characterized by comprising a ship port attachment history recording module, an AIS DEST matching recording module and a ship pre-support port matching model construction processing module which are connected with each other,
the ship port attachment history recording module is used for constructing ship voyage section dynamic state based on ship AIS data and constructing ship port attachment history records in the dynamic state;
the AIS DEST matching recording module forms a mapping relation according to the ship AIS DEST records and the corresponding final ports where the ships are hung and arranges the mapping relation according to the matching times in a sequencing mode, and the AIS DEST matching records are established;
the ship pre-support port matching model building and processing module is used for building a ship pre-support port matching model according to the built ship port attachment history record and the AIS DEST matching record, wherein the ship pre-support port matching model is provided with a potential destination port priority queue with priority, the priority queue comprises an intersection obtained by the ship port attachment history record and the AIS DEST matching record, and the number of times of attachment of a destination port in a current departure port navigation section according to the ship port attachment history record when the same type of ship matched the AIS DEST destination port and different types of ships matched the AIS DEST destination port and/or the different types of ships matched the AIS DEST destination port and/or failed to intersect when the ship port attachment history record fails; and acquiring the pre-support data of the ship navigation according to the optimal destination port identified by the matching result of the ship pre-support port matching model.
Preferably, the AIS DEST matching record module further performs AIS DEST cleaning on the ship AIS data, generates matching times according to the cleaned ship AIS DEST with unified standards and a ship berth hanging port, and establishes an AIS DEST matching record.
Preferably, the system also comprises a shipping date data module for acquiring current shipping date, wherein the shipping date data module is connected with the ship pre-support port matching model construction processing module; at the moment, the ship pre-support port matching model building and processing module builds a ship pre-support port matching model according to the ship date data, the ship port hanging history record and the AIS DEST matching record, and uses a destination port of a container ship obtained by processing matching logic in the ship date data as the highest priority of a potential destination port priority queue in the ship pre-support port matching model.
Preferably, the priority queues in the ship pre-port matching model building and processing module sequentially comprise, from top to bottom, the following levels: the method comprises the following steps that intersection is taken by ship port attachment history records and AIS DEST matching records, ships of the same type according to the AIS DEST matching records pass through an AIS DEST target port when the intersection fails, ships of different types according to the AIS DEST matching records pass through the AIS DEST target port when the intersection fails, and the number of times of attachment of the ships in a current departure port navigation section and the number of times of attachment of the ships in the destination ports of the current departure port navigation section according to the ship port attachment history records when the intersection fails;
or the following steps: the intersection of the ship port attachment history record and the AIS DEST matching record is obtained, the target port attachment times in the current departure port navigation section according to the ship port attachment history record when the intersection is failed, the AIS DEST target port is matched by the ship of the same type according to the AIS DEST matching record when the intersection is failed, the AIS DEST target port is matched by the ship of different types according to the AIS DEST matching record when the intersection is failed, and the target port attachment times in the current departure port navigation section in all the ships.
The invention has the beneficial effects that:
the invention provides a ship pre-support port identification method, which comprises the steps of constructing ship section dynamics based on ship AIS data to establish a ship port attachment history record, generating matching times based on AIS DEST and ship section attachment port to establish AIS DEST matching records, further constructing a ship pre-support port matching model according to the ship port attachment history record and the AIS DEST matching records, wherein the model has a potential destination port priority queue with a specific priority, obtaining pre-support data of ship navigation according to an optimal destination port identified by a model matching result, and further performing pre-support analysis according to the matched destination port. The method combines the ship port attachment history record and the AIS DEST (destination port) matching record, can reflect the true ship navigation destination port when the destination port in the AIS data is ambiguous or ambiguous, solves the problems that the existing pre-support port identification technology depends on AIS data and has error conductivity and the like, optimizes the recording parameters and the model parameters after the ship is attached, and has higher and higher correct matching rate along with the increase of data quantity and matching quantity. Compared with the prior art, the method has higher accuracy.
The ship pre-support port matching model constructed by the invention has a potential destination port priority queue with priority, forms a port pre-support algorithm, is also a priority queue screening relation, and emphasizes on further priority arrangement when one of intersection and non-intersection are taken according to the ship port attachment history record and the AIS DEST matching record so as to protect various logic level queues. And the destination port of the container ship obtained by processing and matching logic in the ship stage data can be used as the highest priority of a potential destination port priority queue in the ship pre-support port matching model by combining the ship stage data with AIS data, the ship destination port is dynamically identified, the potential destination port of the ship is matched on the basis of the ship historical hanging record and the AIS DEST matching record, and the optimal matching destination port is obtained by analyzing the ship dynamics and the pre-support. The shipping date is the scheduling list of the container company, and is usually the most accurate, so the date is placed at the first of the priority queue, and if matching is achieved, the date is returned directly; if there is no ship stage, such as container ship, it is judged based on the matching record between ship port hanging history record and AIS DEST record. And by combining the global container ship date data, the container ship date pre-arrival port can be more accurately obtained.
The invention also relates to a ship pre-support port identification system, which corresponds to the ship pre-support port identification method and can be understood as a system for realizing the ship pre-support port identification method, the system comprises a ship port hanging history recording module, an AIS DEST matching recording module and a ship pre-support port matching model construction processing module which are connected with one another, all the modules work cooperatively, and ship pre-support analysis in navigation is realized by preferably utilizing ship date and AIS data acquisition, cleaning, conversion, analysis, modeling and optimal pre-support port matching, and shipping informatization and intellectualization are realized.
Drawings
Fig. 1 is a preferred flow chart of the method for identifying a ship pre-mortgage harbor according to the present invention.
FIG. 2 is a schematic diagram of a priority queue in the model for matching a port of origin of a ship according to the present invention.
Fig. 3 is a schematic diagram of another priority queue in the model for matching ship pre-port according to the present invention.
Fig. 4 is a block diagram showing the structure of the system for identifying a port of arrival of a ship according to the present invention.
Detailed Description
The present invention will be described with reference to the accompanying drawings.
The invention relates to a ship pre-mortgage harbor identification method, a flow chart of which is shown in figure 1, and the method comprises the following steps:
(1) and constructing ship flight section dynamics based on the ship AIS data, and establishing ship port attachment history records in the dynamics. The established ship port docking history record can be understood as a data storage model, which can also be called a ship port docking model, and reflects the behavior track of a ship in the past period, typical ship docking history is the process from 5 (docking) to 5 (docking) of ship dynamics, in the embodiment, the AIS data of all ships are acquired from 1 month and 1 day in 2019, the ship leg dynamics is firstly established, and the ship port docking model is established in the dynamics.
The key fields of the model are: the MMSI, the NAME of the VESSEL, the VESSEL _ NAME, the TYPE of the VESSEL, the START _ PORT _ CODE, the END _ PORT _ CODE, and the number of TIMES of attachment, LEG _ TIMES.
(2) And generating matching times according to DEST information of the ship AIS and the port hanging and berthing of the ship, and establishing an AIS DEST matching record. The established AIS DEST matching record may also be understood as a data storage model, which may be referred to as an AIS DEST identification model (or AIS DEST matching model), or a destination port identification model. When the ship PORT landing history record in the previous step is constructed, an AIS DEST matching record can be constructed in each flight section according to the AIS DEST, and matching times, matching confirmation and correction are generated according to the DEST and the flight landing END _ PORT _ CODE.
The key fields of the model are: AIS destination PORT AIS _ DEST, ship TYPE VESSEL _ TYPE, PORT of attachment END _ PORT _ CODE, number of TIMES of attachment MATCH MATCH _ TIMES, and whether the matching IS IS _ CONFIRM.
Further, AIS DEST cleaning is carried out on the ship AIS data, matching times are generated according to the cleaned ship AIS DEST data with unified standards and ship berth hanging and berthing, and AIS DEST matching records are established. As the AIS has no unified standard in the filling process, the cleaning in DEST is needed in the preprocessing stage, and after the cleaning, a more standard port English mark can be generally obtained, and the AIS DEST cleaning steps are as follows:
fetching the data after the last character "> -", ">";
take the characters "", "" "," # ","% "; data preceding the "," (",", "preceding data;
removing continuous more than 5B in the characters;
removing the beginning, the end and the space of the non-letter;
returns null if length is less than 2;
return the cleaned AIS _ DEST _ PURE.
(3) Current voyage data is acquired. In order to be compatible with the pre-mortgage port identification of all ships, the method integrates the ship stage data of the container liner, which can be understood as a data storage model and can also be called a ship stage model.
The voyage data mainly comprises SHIP NAMEs SHIP _ NAME, SHIPs MMSI, departure PORT START _ PORT, destination PORT END _ PORT _ CODE, SHIP COMPANY COMPANY, departure TIME START _ TIME and arrival TIME END _ TIME. The ship term data can comprise main ship term data (or called ship term data) and port term data, namely, a main ship term model and a port term model are built according to all current ship term data.
The key fields of the ship-time main model are as follows: vessel MMSI, vessel VOYAGE _ NO, departure PORT START _ PORT _ CODE, destination PORT END _ PORT _ CODE, departure TIME START _ TIME, pre-arrival TIME END _ TIME.
The key fields of the port ship model are as follows: the ship voyage model main key PARENT _ ID, Port _ CODE, Port NAME PORT _ NAME, and Port voyage TYPE SCHEDULE _ TYPE.
(4) Constructing a ship pre-support port matching model according to the ship date, the ship port attachment history record and the AIS DEST matching record, wherein the ship pre-support port matching model has a potential destination port priority queue with a priority, and the priority queue comprises:
the destination port with the maximum number of times of attachment corresponding to the same starting port in the ship port attachment history record and the port with the maximum number of times of matching in the AIS DEST matching record are the same port and directly return to the port;
the port with the same ship type and the highest matching frequency exists in the matching record of the AIS DEST;
the check mark AIS DEST matching records do not have the same ship type but have other ship type records and have the port with the highest matching frequency;
the check mark is a destination port which corresponds to the same starting port in the ship port hanging historical record and has the maximum hanging times;
meanwhile, processing matching logic in the ship-stage data to obtain a target port of the container ship as the highest priority of a potential target port priority queue in the ship pre-butting port matching model; and acquiring the pre-support data of the ship navigation according to the optimal destination port of the matching result of the ship pre-support port matching model. And obtaining the pre-support data of the ship navigation by combining the matched optimal destination port, further analyzing the pre-support arrival time and the residual navigation mileage of the ship, and providing API service for the outside.
When the destination PORT of the designated ship is matched, AIS information is input, a departure PORT START _ PORT _ CODE of the current navigation section of the ship is obtained based on a ship PORT attachment model, then destination PORT AIS _ DEST _ PURE needing matching is obtained by cleaning DEST in the ship AIS, and a potential destination PORT priority queue is obtained based on the ship MMSI, the departure PORT START _ PORT _ CODE and the AIS _ DEST _ PURE.
The priority queue in the constructed ship pre-port matching model is not unique.
The first embodiment is as follows: as shown in fig. 2, the priority queue includes, in order from top to bottom, an intersection taken by the ship port berthing history and the AIS DEST matching records, the ships of the same type according to the AIS DEST matching records when the intersection fails, the AIS DEST destination ports when the ships of the same type according to the AIS DEST matching records fail to intersect, the ships of different types according to the AIS DEST matching records when the intersection fails, the number of berthings at the destination port in the current departure port cruise segment according to the ship port berthing history when the intersection fails, and the number of berthings at the destination port in the current departure port cruise segment in all the ships.
Example two: as shown in fig. 3, the priority queue includes, on a level from top to bottom, the intersection taken by the ship port attachment history record and the AIS DEST matching record, the number of times of attachment of the destination port in the current departure port navigation segment according to the ship port attachment history record when the intersection fails, the ships of the same type according to the AIS DEST matching record when the intersection fails to match the AIS DEST destination port, the ships of different types according to the AIS DEST matching record when the intersection fails to match the AIS DEST destination port, and the number of times of attachment in the destination port of the current departure port navigation segment in all the ships.
Example three: processing the matching logic in the ship-age data to obtain the destination port of the container ship as the highest priority of the potential destination port priority queue in the ship pre-butting port matching model in combination with the ship-age data, as shown in fig. 2 and 3.
This is illustrated in detail below with an embodiment shown in fig. 2.
Based on the vessel port berthing history and AIS DEST match records, if the vessel had a leg record of the AIS DEST after the departure port and AIS cleaning and the AIS DEST had been confirmed in the AIS DEST match records, i.e., the intersection taken by the AIS DEST match records and the vessel port berthing history, then the destination port would have the next highest priority 2.
In the event that the AIS DEST match record and the ship port history record do not intersect, the AIS DEST may not be accurate enough or dirty data, or may be because the ship started a flight segment that did not have a history of previous trips. Where segments without a history of dependencies are prioritized, according to the AIS DEST match record, if the same type of vessel has ever matched this AIS DEST destination port, selecting the destination port with the higher number of matches among these destination ports will more accurately match the destination port in the AIS, which will have a medium priority 3.
If the ships of the same type cannot be matched with the AIS DEST destination ports, the AIS DEST destination ports which are matched by the ships of different types are selected, the destination ports with higher matching times in the destination ports are still more accurately matched with the destination ports in the AIS, and the destination ports have the medium priority 4.
If the same type of ship and different types of ships cannot match the AIS DEST destination port, only some destination ports which may not be very accurate can be selected, and the destination ports have a lower priority 5, which are selected more times from the destination ports in the current departure port leg in the ship port docking history.
If the ship has not passed the history of the trips of the current departure port, the most trips among the destination ports of the current departure port leg of all the ships are selected, and the destination ports have the lowest priority 6.
And merging the destination ports of all the priorities in the process, and obtaining a destination port priority queue p _ potential _ dest based on the AIS historical data according to the destination port priority queue p _ potential _ dest.
Further, based on the destination port of the shipping date:
a more accurate destination port for the container ship may be obtained based on the model of the ship's voyage (the voyage data), and when the matching logic is processed in the model of the ship's voyage, a potential destination port priority queue is obtained from the historical dependency records and AIS DEST matching records in the AIS historical data, and if there is a destination port for the container ship in the pair of matching destination ports, the destination port is the highest priority.
Pre-support port identification destination port priority queue
And sorting the priority queue based on the AIS historical data and the priority queue based on the ship date data according to priority and matching times match _ priority, and taking a destination port which is a destination port with the top five or six ranks as a pre-arrival port identification destination port priority queue.
According to the invention, the ship date data, the ship port attachment history record and the AIS DEST matching record can be located on a basic data platform, the purpose port identification is realized through the data model, and an interface and model optimization are provided for an upper layer structure on the basis, namely, the AIS data history data is preferably synchronized to an AIS data table through a KETTLE by a data logic processing platform, and the logic judgment is added in the processing to construct the ship port attachment history record and the AIS DEST matching record. The ship schedule data is synchronized to the ship schedule and the port schedule through the KETTLE, and the ship schedule data of the container ship can be obtained by correlating the two schedules. The AIS data cleaning and preprocessing is used for cleaning destination port fields in the AIS, and comprises special characters and logic processing. The method comprises the steps of carrying out destination port matching and logic processing through a ship pre-support port matching model, obtaining ship stage data from a ship stage data platform, and obtaining a potential destination port priority queue with a priority of a ship from a ship port hanging history record and an AIS DEST matching record. And obtaining the pre-support data of the ship navigation by combining the matched optimal destination port, analyzing the pre-support arrival time and the residual navigation mileage of the ship, and providing API service for the outside. An API service platform (called API platform for short) based on JAVA and a spring cloud micro-service framework is externally provided on the basis of lower-layer logic realization, namely the API platform integrating destination port matching and pre-cancellation analysis services, and the destination port matching and predicting functions can be called from the API platform in a Restful interface mode to realize access of any platform, system and mobile application. And (3) realizing iterative updating: and after the ship is actually attached, updating parameters such as ship port attachment history, target port matching times, matching and the like.
The invention relies on ship historical AIS data, and constructs ship port attachment history records and AIS DEST matching records (or ship port attachment models and AIS DEST identification models) based on the AIS data. In addition, the most important data for realizing the identification of the destination port of the container ship is the ship date data of the container, and the ship date data of the container can truly reflect the destination port to which the container ship is expected to arrive. The shipping date model provides a pre-arrival port matching based on the ship's IMO number.
The invention also relates to a ship pre-support port identification system, which corresponds to the ship pre-support port identification method and can be understood as a system for realizing the ship pre-support port identification method, as shown in fig. 4, the system comprises a ship port hanging history recording module, an AIS DEST matching recording module and a ship pre-support port matching model construction processing module which are connected with each other, and all the modules work cooperatively. The ship port attachment history recording module is used for constructing a ship navigation section dynamic state based on ship AIS data and establishing a ship port attachment history record in the dynamic state; the AIS DEST matching recording module generates matching times according to the AIS DEST data of the ship and the port hanging and berthing of the ship, and establishes AIS DEST matching records; the ship pre-support port matching model building and processing module is used for building a ship pre-support port matching model according to the built ship port attachment history record and the AIS DEST matching record, wherein the ship pre-support port matching model is provided with a potential destination port priority queue with priority, the priority queue comprises an intersection obtained by the ship port attachment history record and the AIS DEST matching record, and the number of times of attachment of a destination port in a current departure port navigation section according to the ship port attachment history record when the ship matching with the same type passes the AIS DEST destination port and the ship matching with different types passes the AIS DEST destination port and/or fails to intersect according to the AIS DEST destination port matching record when the ship port attachment history record fails to intersect; and acquiring the pre-support data of the ship navigation according to the optimal destination port identified by the matching result of the ship pre-support port matching model.
Further, the AIS DEST matching recording module also carries out AIS DEST cleaning on the ship AIS data, generates matching times according to the cleaned ship AIS DEST records with unified standards and ship berth hanging ports, and establishes an AIS DEST matching record.
The system further comprises a ship-stage data module for acquiring current ship-stage data, wherein the ship-stage data module is connected with the ship pre-support port matching model construction processing module; and at the moment, the ship pre-support port matching model constructing and processing module constructs a ship pre-support port matching model according to the ship date data, the ship port attachment history record and the AIS DEST matching record, and the target port of the container ship obtained by processing matching logic in the ship date data is used as the highest priority of a potential target port priority queue in the ship pre-support port matching model.
Further, the priority queues in the ship pre-support port matching model building and processing module sequentially comprise the following steps from top to bottom: the method comprises the following steps that intersection is taken by ship port attachment history records and AIS DEST matching records, ships of the same type according to the AIS DEST matching records pass through an AIS DEST target port when the intersection fails, ships of different types according to the AIS DEST matching records pass through the AIS DEST target port when the intersection fails, and the number of times of attachment of the ships in a current departure port navigation section and the number of times of attachment of the ships in the destination ports of the current departure port navigation section according to the ship port attachment history records when the intersection fails;
or the following steps: the intersection of the ship port attachment history record and the AIS DEST matching record is obtained, the target port attachment times in the current departure port navigation section according to the ship port attachment history record when the intersection is failed, the AIS DEST target port is matched by the ship of the same type according to the AIS DEST matching record when the intersection is failed, the AIS DEST target port is matched by the ship of different types according to the AIS DEST matching record when the intersection is failed, and the target port attachment times in the current departure port navigation section in all the ships.
The invention relates to a ship pre-port identification system, which mainly comprises two functions: destination port matching, API service.
The target port matching is the core of the scheme, namely, according to AIS information, a pre-support port identification priority queue based on ship date data, AIS attachment history records and AIS DEST matching records is obtained through logic processing judgment.
And API service, namely acquiring a ship pre-arrival port identification priority queue according to the departure port and the destination port, logically selecting the ship pre-arrival port time, the remaining sailing mileage and other dynamic ship data, providing an external API interface, and inquiring the current pre-arrival port, the pre-arrival time and the arrival time in the ship according to the MMSI of the ship.
Compared with the prior art, the method and the system for identifying the ship pre-support port have higher feasibility and accuracy. By combining the global container ship-stage data, the container ship-stage pre-arrival port is more accurately obtained; by combining the ship port attachment history record and the AIS DEST matching record, the real ship navigation destination port can be reflected when the destination port in the AIS data is ambiguous or ambiguous; the established ship port attachment historical record, the AIS DEST matching record and the established ship pre-support port matching model can optimize model parameters after the ship is attached, and the correct matching rate is higher and higher along with the increase of data volume and the increase of matching volume.
It should be noted that the above-mentioned embodiments enable a person skilled in the art to more fully understand the invention, without restricting it in any way. Therefore, although the present invention has been described in detail with reference to the drawings and examples, it should be understood by those skilled in the art that the present invention may be modified and replaced by other embodiments, and in any case, the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A ship pre-support port identification method is characterized by comprising the following steps:
constructing ship flight section dynamics based on ship AIS data, and establishing ship port attachment history records by utilizing the dynamics;
according to the AIS DEST records of the ships and the final port of the ships, the ships are arranged in a reverse order according to the matching times, and AIS DEST matching records are established;
constructing a ship pre-support port matching model according to the established ship port attachment history record and the AIS DEST matching record, wherein the ship pre-support port matching model is provided with a potential target port priority queue with priority, the priority queue comprises an intersection taken by the ship port attachment history record and the AIS DEST matching record, the AIS DEST target port is matched by the same type of ship according to the AIS DEST matching record when the intersection is not achieved, and the target port attachment times in the current departure port section according to the ship port attachment history record when the AIS DEST target port is matched by different types of ships and/or the AIS DEST target port is matched by the ship not to be intersected; and acquiring the pre-support data of the ship navigation according to the optimal destination port identified by the matching result of the ship pre-support port matching model.
2. The method according to claim 1, wherein the priority queue in the constructed ship pre-support port matching model sequentially includes, from high to low, intersections obtained from the ship port attachment history and the AIS DEST matching records, ships of the same type passing the AIS DEST destination ports according to the AIS DEST matching records when the intersections fail, ships of different types passing the AIS DEST destination ports according to the AIS DEST matching records when the intersections fail, the number of times of attachment of the destination in the current departure port section according to the ship port attachment history when the intersections fail, and the number of times of attachment of the destination in the current departure port section in all the ships.
3. The method according to claim 1, wherein the priority queue in the constructed ship pre-support port matching model sequentially includes intersections obtained from the ship port attachment history records and the AIS DEST matching records according to a high-to-low order, the number of times of attachment of a destination port in a current departure port voyage section according to the ship port attachment history records when the intersections fail, the AIS DEST destination port matched by a ship of the same type according to the AIS DEST matching records when the intersections fail, the number of times of attachment of a ship in the destination port of a current departure port voyage section in all ships when the intersections fail to match the AIS DEST destination port by a ship of a different type according to the AIS DEST matching records.
4. The method according to any one of claims 1 to 3, further comprising obtaining current ship date data, constructing a ship pre-support port matching model according to the ship date data, ship port hang-up history and AIS DEST matching records, and processing matching logic in the ship date data to obtain a destination port of the container ship as a highest priority of a potential destination port priority queue in the ship pre-support port matching model.
5. The method for identifying the ship pre-support port according to one of claims 1 to 3, further comprising performing AIS DEST cleaning on the ship AIS data, and establishing an AIS DEST matching record according to the cleaned ship AIS DEST with unified standards and the ship section docking port generation matching times.
6. The ship pre-support port identification method according to any one of claims 1 to 3, wherein pre-support data of ship navigation is obtained in combination with the matched optimal destination port, and the ship pre-support port time, the remaining voyage mileage are analyzed and an API service is provided to the outside.
7. A ship pre-support port identification system is characterized by comprising a ship port attachment history recording module, an AIS DEST matching recording module and a ship pre-support port matching model construction processing module which are connected with each other,
the ship port attachment history recording module is used for constructing ship voyage section dynamic state based on ship AIS data and constructing ship port attachment history records in the dynamic state;
the AIS DEST matching recording module forms a mapping relation according to the ship AIS DEST records and the corresponding final ports where the ships are hung and arranges the mapping relation according to the matching times in a sequencing mode, and the AIS DEST matching records are established;
the ship pre-support port matching model building and processing module is used for building a ship pre-support port matching model according to the built ship port attachment history record and the AIS DEST matching record, wherein the ship pre-support port matching model is provided with a potential destination port priority queue with priority, the priority queue comprises an intersection obtained by the ship port attachment history record and the AIS DEST matching record, and the number of times of attachment of a destination port in a current departure port navigation section according to the ship port attachment history record when the same type of ship matched the AIS DEST destination port and different types of ships matched the AIS DEST destination port and/or the different types of ships matched the AIS DEST destination port and/or failed to intersect when the ship port attachment history record fails; and acquiring the pre-support data of the ship navigation according to the optimal destination port identified by the matching result of the ship pre-support port matching model.
8. The system of claim 7, wherein the AIS DEST matching record module further performs AIS DEST cleaning on the vessel AIS data, and establishes AIS DEST matching records according to the cleaned vessel AIS DEST and vessel segment docking generation matching times of the unified standards.
9. The system for identifying the ship pre-mortice port according to claim 7 or 8, further comprising a ship-time data module for acquiring current ship-time data, wherein the ship-time data module is connected with the ship pre-mortice port matching model construction processing module; at the moment, the ship pre-support port matching model building and processing module builds a ship pre-support port matching model according to the ship date data, the ship port hanging history record and the AIS DEST matching record, and uses a destination port of a container ship obtained by processing matching logic in the ship date data as the highest priority of a potential destination port priority queue in the ship pre-support port matching model.
10. The system according to claim 9, wherein the priority queue in the ship pre-docking port matching model building and processing module is, in order from high to low: the method comprises the following steps that intersection is taken by ship port attachment history records and AIS DEST matching records, ships of the same type according to the AIS DEST matching records pass through an AIS DEST target port when the intersection fails, ships of different types according to the AIS DEST matching records pass through the AIS DEST target port when the intersection fails, and the number of times of attachment of the ships in a current departure port navigation section and the number of times of attachment of the ships in the destination ports of the current departure port navigation section according to the ship port attachment history records when the intersection fails;
or the following steps: the intersection of the ship port attachment history record and the AIS DEST matching record is obtained, the number of times of attachment of the destination port in the current departure port navigation section according to the ship port attachment history record when the intersection fails, the AIS DEST destination port is matched by the ship of the same type according to the AIS DEST matching record when the intersection fails, the AIS DEST destination port is matched by the ship of different type according to the AIS DEST matching record when the intersection fails, and the number of times of attachment of the destination port in the current departure port navigation section in all the ships.
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| CN202111176051.6A CN113918619B (en) | 2021-10-09 | 2021-10-09 | Ship pre-support port identification method and system |
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| CN110706518A (en) * | 2019-08-19 | 2020-01-17 | 浙江海洋大学 | Ship port-hanging and berthing prediction technology |
| CN112562415A (en) * | 2020-11-26 | 2021-03-26 | 中远海运科技股份有限公司 | Ship route recommendation method |
| EP3879468A1 (en) * | 2020-03-10 | 2021-09-15 | Jakota Cruise Systems GmbH | Method and system for forecasting terminal congestion in seaports |
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| CN110706518A (en) * | 2019-08-19 | 2020-01-17 | 浙江海洋大学 | Ship port-hanging and berthing prediction technology |
| EP3879468A1 (en) * | 2020-03-10 | 2021-09-15 | Jakota Cruise Systems GmbH | Method and system for forecasting terminal congestion in seaports |
| CN112562415A (en) * | 2020-11-26 | 2021-03-26 | 中远海运科技股份有限公司 | Ship route recommendation method |
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