CN114627681A - Ship meeting early warning system and method in bridge area - Google Patents
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Abstract
The invention discloses a bridge area ship encounter early warning system and a method, wherein the system comprises a ship AIS sending module, an AIS receiving module, an AIS analyzing module, a ship encounter early warning module, an AIS and early warning result data storage module and a client, and the client comprises an alarm reminding service module, a chart service module, a ship position display interface service module and an alarm sending interface service module; the method mainly comprises the steps of setting an upstream route and a downstream route entering a bridge core area, calculating the time of arrival and departure of a ship at the bridge core area by utilizing the average speed data of the ship in the latest period of time in the AIS of the ship near the bridge, and judging whether the ship meets the bridge core area according to the arrival and departure times of all the ships. The method can accurately predict the meeting condition of the ship in the bridge area for a long time, and is suitable for predicting the position of the ship in the bent water channel for a long time.
Description
Technical Field
The invention relates to the technical field of ship encounter monitoring, in particular to a ship encounter early warning system and method in a bridge area.
Background
Because the area of the bridge region is narrow, in order to ensure the safety of the bridge, the situation that ships meet is avoided when the ships pass through the bridge region, so that the danger of the ships to the bridge caused by the meeting problem is reduced, and a prediction system capable of predicting the condition that the ships meet near the bridge is needed.
The conventional ship track prediction is to predict the change condition of a ship position by utilizing a cubic exponential smoothing method according to the change trend of a historical ship position to obtain a position prediction value of a ship, namely a prediction value of longitude and latitude, for example, the invention patent of patent application No. CN201410016065.5, "inland river bridge area ship-borne navigation active collision avoidance system and collision avoidance method", solves the defects that the existing ship navigation aid equipment cannot accurately obtain the position of a collision avoidance target object and cannot more accurately predict the nearest meeting distance and the nearest meeting distance, but has great errors on long-time prediction and prediction of the position of a bent water channel ship.
Disclosure of Invention
The invention aims to provide a bridge region ship meeting early warning system and method, which can accurately predict meeting conditions of ships in a bridge region for a long time according to a planned ship motion path of a channel and are suitable for predicting the positions of the ships in a bent water channel for a long time.
In order to achieve the purpose, the invention provides the following scheme:
a bridge region marine encounter early warning system, the system comprising:
the ship AIS sending module is an AIS transmitter arranged on a ship;
the AIS receiving module is an AIS receiver arranged near the bridge and used for receiving AIS data sent by an AIS transmitter on a ship;
the AIS analysis module is used for analyzing the original AIS data of the AIS receiver;
the ship meeting early warning module is used for predicting the meeting condition of the ship in the bridge area according to the AIS position and speed information to obtain early warning result data;
the AIS and early warning result data storage module is used for storing the analyzed AIS data and early warning result data;
the system comprises a client side, a data storage module, an AIS analysis module, an early warning result data storage module and a ship position display interface service module, wherein the client side is respectively connected with the AIS analysis module, the AIS and the early warning result data storage module and comprises an alarm reminding service module, a chart service module, a ship position display interface service module and an alarm sending interface service module;
the alarm reminding service module is used for sending out a warning according to the early warning result through characters and sound; the marine map service module is used for providing marine map information, and the ship position display interface service module is used for providing AIS data of all ships near a bridge area; the alarm sending interface service module is used for providing early warning result data; and the user logs in the client to check the chart, the ship position and the alarm information.
Further, the AIS receiver can receive AIS data sent by an AIS transmitter on a ship within 20 nautical miles near the bridge; the AIS data comprises ship speed, course, ship heading, longitude and latitude, draught and ship name information.
The invention also provides a ship encounter early warning method in the bridge area, which is applied to the ship encounter early warning system in the bridge area and comprises the following steps:
s1, selecting a ship movement route: respectively acquiring ships moving towards the bridge direction from upstream and downstream according to the course of the ships and the direction ranges of the upstream and downstream routes, and determining the ship moving routes;
s2, predicting the arrival time of the ship at the bridge area: according to a distance speed formula S = v × t, uniformly moving according to the average speed of the ship in the latest period of time, and calculating the time when the ship reaches the bridge area according to the ship movement route determined in the step S1;
s3, predicting the time when the ship leaves the bridge area: according to a distance speed formula S = v × t, the ship moves at a constant speed according to the average speed of the ship in the latest period of time, and the time when the ship leaves the bridge area is calculated according to the ship movement route determined in the step S1 and the route in the bridge area;
s4, calculating the meeting of the ship in the bridge area: according to the calculation of the steps S2 and S3, the arrival time and the departure time of the downstream ship to the bridge area are t respectively1And t2The time when the upstream ship arrives at and leaves the bridge area is t3And t4When t is1>t3And t is1<t4Time or t3>t1And t3<t2Judging that the two ships meet in the bridge area;
s5, the ship meet forecasting alarm: according to the calculation result of the step S4, if two ships meet in the bridge area, the control end sends a warning to remind the manager through a text and audio method.
Further, in the step S1, the ships moving in the bridge direction from the upstream to the downstream are respectively obtained according to the ship heading and the direction ranges of the upstream and downstream routes, and the ship movement route is determined, which specifically includes:
the ship course ranges in the bridge direction are set as follows: the heading range alpha of the upstream ship belongs to { a, b }, and the heading range beta of the downstream ship belongs to { c, d };
setting the course of the ship to be delta, and if delta > a and delta < b, the ship is an upstream ship and moves according to an upstream route; if vessel δ > c and δ < d, the vessel is a downstream vessel, moving according to a downstream course.
Further, in step S2, the time for the ship to reach the bridge area is calculated, and the formula is as follows:
wherein,s 1the course distance for the ship to reach the bridge area,vthe latest average speed of the vessel.
Further, in step S3, the time when the ship leaves the bridge area is calculated, and the formula is as follows:
wherein,s 1the course distance for the ship to reach the bridge area,sthe distance of the route in the bridge area is,vas a shipMean speed of ship in the near future.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: according to the system and the method for early warning of ship meeting in the bridge area, the AIS receiver is arranged near the bridge, AIS data sent by the AIS transmitter on a ship in the 20 nautical miles near the bridge can be received, the AIS data is received and analyzed, and the AIS data is stored in the relation database MySQL, and comprises information such as ship speed, course, ship heading, longitude and latitude, draught and ship name; the method comprises the steps that a ship enters a bridge area route and a bridge area route according to a navigation channel planning; selecting a ship to enter a bridge area route according to the ship course in the AIS data; calculating the time of the ship arriving at and leaving the region according to the average speed of the ship, the entering route and the route of the bridge region to calculate the meeting condition of the ship in the bridge region; the predicted meeting result sends out a prompt through characters and audio; the method can be used for providing data support for ship position prediction and providing technical support for safety early warning of a maritime department and a bridge management department.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a ship encounter early warning system in a bridge area according to the present invention;
FIG. 2 is a schematic flow chart of the ship encounter early warning method in the bridge area.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a bridge region ship meeting early warning system and method, which can accurately predict meeting conditions of ships in a bridge region for a long time according to a planned ship motion path of a channel and are suitable for predicting the positions of the ships in a bent water channel for a long time.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the ship encounter early warning system in the bridge area provided by the invention comprises:
the ship AIS sending module is an AIS transmitter arranged on a ship;
the AIS receiving module is an AIS receiver arranged near the bridge and used for receiving AIS data sent by an AIS transmitter on a ship;
the AIS analysis module is used for analyzing the original AIS data of the AIS receiver;
the ship meeting early warning module is used for predicting the meeting condition of the ship in the bridge area according to the AIS position and speed information to obtain early warning result data;
the AIS and early warning result data storage module is used for storing the analyzed AIS data and early warning result data;
the system comprises a client side, a data storage module, an AIS analysis module, an early warning result data storage module and a ship position display interface service module, wherein the client side is respectively connected with the AIS analysis module, the AIS and the early warning result data storage module and comprises an alarm reminding service module, a chart service module, a ship position display interface service module and an alarm sending interface service module;
the alarm reminding service module is used for sending out a warning according to the early warning result through characters and sound; the marine map service module is used for providing marine map information, and the ship position display interface service module is used for providing AIS data of all ships near a bridge area; the alarm sending interface service module is used for providing early warning result data; and the user logs in the client to check the chart, the ship position and the alarm information.
The AIS receiver can receive AIS data sent by an AIS transmitter on a ship within the 20 nautical miles near the bridge; the AIS data comprises ship speed, course, ship heading, longitude and latitude, water intake, ship name and other information. The AIS and early warning result data storage module is a relational database MySQL.
AIS (automatic identification system for ships) refers to a new type of navigation aid system applied to maritime safety and communication between ships and shore, and between ships and boats. The system is usually composed of a VHF communication machine, a GPS locator and a communication controller connected with a ship-borne display, a sensor and the like, and can automatically exchange important information such as ship position, navigational speed, course, ship name, call sign and the like. The AIS installed on the ship transmits the information outwards and simultaneously receives information of other ships in the VHF coverage range, so that automatic response is realized. In addition, as an open data transmission system, the system can be connected with terminal equipment such as radar, ARPA, ECDIS, VTS and the like and INTERNET to form a maritime traffic management and monitoring network, is an effective means for obtaining traffic information without radar detection, and can effectively reduce ship collision accidents.
As shown in fig. 2, the invention further provides a method for early warning of the ship encounter in the bridge area, which is applied to the system for early warning of the ship encounter in the bridge area, and comprises the following steps:
s1, selecting a ship movement route, respectively acquiring ships moving in the bridge direction from upstream and downstream according to the ship course and the direction ranges of the upstream and downstream routes, and determining the ship movement route, wherein the method specifically comprises the following steps:
the ship course ranges in the bridge direction are set as follows: the heading range alpha of the upstream ship belongs to { a, b }, and the heading range beta of the downstream ship belongs to { c, d };
setting the course of the ship to be delta, and if delta > a and delta < b, the ship is an upstream ship and moves according to an upstream route; if the ship is delta > c and delta < d, the ship is a downstream ship and moves according to a downstream route;
s2, forecasting the arrival time of the ship at the bridge area, uniformly moving according to the distance speed formula S = v × t and the average speed of the ship in the latest period of time, and calculating the arrival time of the ship at the bridge area according to the movement route of the ship determined in the step S1, wherein the formula is as follows:
wherein,s 1the course distance for the ship to reach the bridge area,vthe latest average speed of the ship;
s3, predicting the time when the ship leaves the bridge area: according to a distance speed formula S = v × t, the ship moves at a constant speed according to the average speed of the ship in the latest period of time, and the time when the ship leaves the bridge area is calculated according to the ship movement route determined in the step S1 and the route in the bridge area, wherein the formula is as follows:
wherein,s 1the course distance for the ship to reach the bridge area,sthe distance of the route in the bridge area is,vthe latest average speed of the ship;
s4, calculating the meeting of the ship in the bridge area: according to the calculation of the steps S2 and S3, the arrival time and the departure time of the downstream ship to the bridge area are t respectively1And t2The time when the upstream ship arrives at and leaves the bridge area is t3And t4When t is1>t3And t1<t4Time or t3>t1And t3<t2Judging that the two ships meet in the bridge area;
s5, warning the ship meeting prediction: according to the calculation result of the step S4, if two ships meet in the bridge area, the control end sends a warning to remind the manager through a text and audio method.
The method mainly comprises the steps of setting an upstream and downstream route entering a bridge core area, calculating the time of arrival and departure of a ship in the bridge core area by utilizing the average speed data of the ship in the latest period of time in the AIS of the ship near the bridge, and judging whether the ship meets the bridge core area according to the arrival and departure times of all the ships.
According to the system and the method for early warning of ship meeting in the bridge area, the AIS receiver is arranged near the bridge, AIS data sent by the AIS transmitter on a ship in the 20 nautical miles near the bridge can be received, the AIS data is received and analyzed, and the AIS data is stored in the relation database MySQL, and comprises information such as ship speed, course, ship heading, longitude and latitude, draught and ship name; the method comprises the steps that a ship enters a bridge area route and a bridge area route according to a navigation channel planning; selecting a ship to enter a bridge area route according to the ship course in the AIS data; calculating the time of the ship arriving at and leaving the region according to the average speed of the ship, the entering route and the route of the bridge region to calculate the meeting condition of the ship in the bridge region; the predicted meeting result sends out a prompt through characters and audio; the method can be used for providing data support for ship position prediction and providing technical support for safety early warning of a maritime department and a bridge management department.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. The utility model provides a regional boats and ships of bridge meet early warning system which characterized in that includes: the ship AIS sending module is an AIS transmitter arranged on a ship; the AIS receiving module is an AIS receiver arranged near the bridge and used for receiving AIS data sent by an AIS transmitter on a ship; the AIS analysis module is used for analyzing the original AIS data of the AIS receiver; the ship meeting early warning module is used for predicting the meeting condition of the ship in the bridge area according to the AIS position and speed information to obtain early warning result data; the AIS and early warning result data storage module is used for storing the analyzed AIS data and the analyzed early warning result data; the system comprises a client side, a data storage module, an AIS analysis module, an early warning result data storage module and a ship position display interface service module, wherein the client side is respectively connected with the AIS analysis module, the AIS and the early warning result data storage module and comprises an alarm reminding service module, a chart service module, a ship position display interface service module and an alarm sending interface service module; the alarm reminding service module is used for sending out a warning according to the early warning result through characters and sound; the marine map service module is used for providing marine map information, and the ship position display interface service module is used for providing AIS data of all ships near a bridge area; the alarm sending interface service module is used for providing early warning result data; and the user logs in the client to check the chart, the ship position and the alarm information.
2. The bridge area marine encounter warning system of claim 1 wherein the AIS receiver is configured to receive AIS data from AIS transmitters on vessels within 20 nautical miles of the bridge; the AIS data comprises ship speed, course, ship heading, longitude and latitude, draught and ship name information.
3. A bridge region ship encounter early warning method is applied to the bridge region ship encounter early warning system of any one of claims 1-2, and is characterized by comprising the following steps: s1, selecting a ship movement route: respectively acquiring ships moving towards the bridge direction from upstream and downstream according to the course of the ships and the direction ranges of the upstream and downstream routes, and determining the ship moving routes; s2, predicting the arrival time of the ship at the bridge area: according to a distance speed formula S = v × t, uniformly moving according to the average speed of the ship in the latest period of time, and calculating the time when the ship reaches the bridge area according to the ship movement route determined in the step S1; s3, predicting the time when the ship leaves the bridge area: according to a distance speed formula S = v × t, the ship moves at a constant speed according to the average speed of the ship in the latest period of time, and the time when the ship leaves the bridge area is calculated according to the ship movement route determined in the step S1 and the route in the bridge area; s4, calculating the meeting of the ship in the bridge area: according to the calculation of the steps S2 and S3, the arrival time and the departure time of the downstream ship to the bridge area are t respectively1And t2The time when the upstream ship arrives at and leaves the bridge area is t3And t4When t is1>t3And t1<t4Time or t3>t1And t3<t2Judging that the two ships meet in the bridge area; s5, the ship meet forecasting alarm: according to the calculation result of the step S4, if two ships meet in the bridge area, the control end sends a warning to remind the manager through a text and audio method.
4. The method for early warning of ship encounters in the bridge area according to claim 3, wherein the step S1 includes the steps of obtaining ships moving in the bridge direction from upstream to downstream according to the ship course and the direction ranges of the routes from upstream to downstream, and determining the ship movement routes, which specifically includes: the ship course ranges in the bridge direction are set as follows: the heading range alpha of the upstream ship belongs to { a, b }, and the heading range beta of the downstream ship belongs to { c, d }; setting the course of the ship to be delta, and if delta > a and delta < b, the ship is an upstream ship and moves according to an upstream route; if vessel δ > c and δ < d, the vessel is a downstream vessel, moving according to a downstream course.
5. The method for early warning of ship encountering in the bridge area according to claim 3, wherein in the step S2, the time for the ship to reach the bridge area is calculated, and the formula is as follows:
wherein,s 1the course distance for the ship to reach the bridge area,vthe latest average speed of the vessel.
6. The method for warning the meeting of the ship in the bridge area according to claim 5, wherein in step S3, the time for the ship to leave the bridge area is calculated according to the following formula:
wherein,s 1the course distance for the ship to reach the bridge area,sthe distance of the route in the bridge area is,vthe latest average speed of the vessel.
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| CN111951610A (en) * | 2020-08-31 | 2020-11-17 | 上海海事大学 | Ship-bridge collision avoidance active anti-collision intelligent early warning system and method |
| CN112965477A (en) * | 2021-01-22 | 2021-06-15 | 青岛科技大学 | Obstacle collision prevention method based on dynamic security domain and collision prevention rule |
| CN113470436A (en) * | 2021-05-31 | 2021-10-01 | 交通运输部水运科学研究所 | Ship bridge collision avoidance method and system |
| CN113916234A (en) * | 2021-10-25 | 2022-01-11 | 中国人民解放军海军大连舰艇学院 | Automatic planning method for ship collision avoidance route under complex dynamic condition |
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