A method, device, electronic equipment and medium for optimizing ship weather routes

Abstract

The present invention provides a ship weather route optimization method, device, electronic device and medium, the method comprising: obtaining ship navigation meteorological field data; constructing an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, and determining ship navigation environment data based on the atmospheric ocean wave numerical model; constructing a ship navigation simulation model based on the ship navigation environment data, and determining the multi-objective function of the ship navigation simulation model; solving the multi-objective function based on a preset ship route optimization algorithm to obtain a Pareto optimal solution set; screening the Pareto optimal solution set to determine the final optimal solution and its corresponding ship route. The present invention effectively improves the ship navigation safety level under the influence of bad weather.

Description

Technical Field

[0001] The invention relates to the technical field of water transportation, and in particular to a method for optimizing ship weather routes. Background Art

[0002] Ship weather navigation service is a service provided by commercial weather navigation companies using their own meteorological resource advantages, complex hydrological navigation conditions and ship loading stability characteristics, combined with the ship's voyage intentions, to provide ships with an optimal safe and energy-saving route for reference based on their schedules before the ship sails. The main purpose is to assist ships in completing voyage missions more efficiently under the premise of safety, optimize operating efficiency, and achieve energy conservation and emission reduction in shipping.

[0003] In the prior art, when planning ship weather routes, the real-time corresponding status of the ship under the actual ocean environment (wind, waves, and currents) is usually not taken into consideration. Especially in the face of severe weather such as typhoons and cold waves, it is difficult to meet the actual navigation safety needs. Summary of the invention

[0004] In view of this, it is necessary to provide a ship weather route optimization method to solve the technical problem in the existing technology that route planning is difficult to meet the actual navigation safety needs when facing severe weather such as typhoons and cold waves.

[0005] In order to solve the above problems, on the one hand, the present invention provides a ship weather route optimization method, comprising:

[0006] Obtain ship navigation meteorological field data;

[0007] Constructing an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, and determining ship navigation environment data based on the atmospheric ocean wave numerical model;

[0008] Based on the ship navigation environment data, construct a ship navigation simulation model, and determine a multi-objective function of the ship navigation simulation model;

[0009] Based on a preset ship route optimization algorithm, the multi-objective function is solved to obtain a Pareto optimal solution set;

[0010] The Pareto optimal solution set is screened to determine the final optimal solution and its corresponding ship route.

[0011] In some possible implementations, constructing an atmospheric ocean wave numerical model based on the ship navigation meteorological field data includes:

[0012] Based on the ship navigation meteorological field data, determine whether the ship navigation area is in severe weather;

[0013] If the ship is sailing in an area with bad weather, fine grid settings and downscaling settings will be performed to construct a numerical model of atmospheric and oceanic waves.

[0014] In some possible implementations, the ship navigation environment data includes air pressure, effective wave height, wind speed, wind direction, wave height, wave period and direction, swell height, swell period and direction, ocean current size and direction, typhoon wind speed and track information.

[0015] In some possible implementations, the ship navigation simulation model is a combined model of a ship maneuvering and a wave resistance coupling model.

[0016] In some possible implementations, the optimization algorithm is one of a genetic algorithm, a particle swarm algorithm, and a simulated annealing algorithm.

[0017] In some possible implementations, the optimization objectives of the multi-objective function include minimizing the shortest flight time, the shortest flight distance, and the minimum fuel consumption.

[0018] In some possible implementations, the Pareto optimal solution set is screened to determine a final optimal solution and its corresponding ship route, including: using a TOPSIS algorithm to sort the optimal solutions in the Pareto optimal solution set to determine a final optimal solution and its corresponding ship route.

[0019] On the other hand, the present invention also provides a ship weather route optimization device, comprising:

[0020] A data acquisition module, used to acquire ship navigation meteorological field data, construct an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, and determine ship navigation environment data based on the atmospheric ocean wave numerical model;

[0021] A navigation simulation module, used to construct a ship navigation simulation model based on the ship navigation environment data, and determine the multi-objective function of the ship navigation simulation model;

[0022] The route optimization module is used to solve the multi-objective function based on a preset ship route optimization algorithm to obtain a Pareto optimal solution set, and to screen the Pareto optimal solution set to determine the final optimal solution and its corresponding ship route.

[0023] In another aspect, the present invention further provides an electronic device, comprising a memory and a processor;

[0024] The memory is used to store programs;

[0025] The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the above-mentioned ship weather route optimization method.

[0026] On the other hand, the present invention also provides a computer-readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the above-mentioned ship weather route optimization method are implemented.

[0027] The beneficial effect of adopting the above embodiment is: the ship meteorological route optimization method provided by the present invention first obtains ship navigation meteorological field data, and constructs an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, obtains ship navigation environment data, and then constructs a ship navigation simulation model based on the ship navigation environment data, and determines the multi-objective function of the ship navigation simulation model, and then solves the multi-objective function based on the preset ship route optimization algorithm to obtain the Pareto optimal solution set, and finally screens the Pareto optimal solution set to determine the final optimal solution and its corresponding ship route; by considering the real-time corresponding state of the ship under the actual ocean environment (wind, waves, currents) to construct a ship navigation simulation model, the ship's navigation safety level under the influence of typhoons, cold waves and other severe weather with strong winds and waves is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic flow chart of an embodiment of the ship weather route optimization method provided by the present invention;

[0030] Figure 2 For the present invention Figure 1 A schematic flow chart of an embodiment of step S102;

[0031] Figure 3 A schematic diagram of the structure of an embodiment of an electronic device provided by the present invention;

[0032] Figure 4 A schematic structural diagram of an embodiment of a ship weather route optimization method device provided by the present invention. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0034] It should be understood that the schematic drawings are not drawn to scale. The flowchart used in the present invention shows the operations implemented according to some embodiments of the present invention. It should be understood that the operations of the flowchart can be implemented out of order, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art, under the guidance of the content of the present invention, can add one or more other operations to the flowchart, and can also remove one or more operations from the flowchart. Some of the block diagrams shown in the accompanying drawings are functional entities, which do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor systems and / or microcontroller systems.

[0035] The descriptions such as "first" and "second" involved in the embodiments of the present invention are only used to describe the implicit purpose, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the technical features defined as "first" and "second" may explicitly or implicitly include at least one of the features. "And / or" describes the association relationship of the associated objects, indicating that there may be three relationships, for example: A and / or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0036] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] The present invention provides a method for optimizing ship weather routes, which is described below.

[0038] Figure 1 A schematic flow chart of an embodiment of the ship weather route optimization method provided by the present invention is as follows: Figure 1 As shown in FIG. 1 , the ship weather route optimization method includes:

[0039] S101, obtaining ship navigation meteorological field data;

[0040] It should be noted that ship navigation meteorological data include real-time forecast data of sea surface wind and wave fields for global and local sea areas released by NCEP, ECMWF, JMA and other institutions.

[0041] S102, constructing an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, and determining the ship navigation environment data based on the atmospheric ocean wave numerical model;

[0042] It should be noted that the ship navigation environment data includes air pressure, effective wave height, wind speed, wind direction, wave height, wave period and direction, swell height, swell period and direction, ocean current size and direction, typhoon wind speed and track information.

[0043] S103, constructing a ship navigation simulation model based on the ship navigation environment data, and determining a multi-objective function of the ship navigation simulation model;

[0044] S104, solving the multi-objective function based on a preset ship route optimization algorithm to obtain a Pareto optimal solution set;

[0045] It should be noted that, in this embodiment, the ship route optimization algorithm is any one of a genetic algorithm, a particle swarm algorithm and a simulated annealing algorithm.

[0046] S105. Screen the Pareto optimal solution set to determine the final optimal solution and its corresponding ship route.

[0047] Compared with the prior art, the present invention first obtains ship navigation meteorological field data, and constructs an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, obtains ship navigation environment data, and then constructs a ship navigation simulation model based on the ship navigation environment data, and determines the multi-objective function of the ship navigation simulation model, and then solves the multi-objective function based on a preset ship route optimization algorithm to obtain a Pareto optimal solution set, and finally screens the Pareto optimal solution set to determine the final optimal solution and its corresponding ship route; by considering the real-time corresponding state of the ship under the actual ocean environment (wind, waves, currents) to construct a ship navigation simulation model, the ship's navigation safety level under the influence of severe weather such as typhoons and cold waves is effectively improved.

[0048] In order to effectively model severe weather and improve the reliability of the model, such as Figure 2 As shown, step S102 specifically includes:

[0049] S201, judging whether the ship navigation area is in bad weather based on the ship navigation meteorological field data;

[0050] S202. If the area where the ship is sailing is in bad weather, fine grid setting and downscaling setting are performed to construct an atmospheric ocean wave numerical model and determine the ship's navigation environment data.

[0051] It should be noted that the meteorological field data is specifically imported into the atmospheric ocean wave numerical model as the initial boundary constraints, and refined grid setting and downscaling modeling are carried out for extreme weather and sea conditions such as typhoons and cold waves, so as to achieve efficient prediction of local ship navigation environment data through calculation.

[0052] In step S103, a ship navigation simulation model is constructed, and the route is first discretized, specifically:

[0053] Schematic diagram of the mathematical model for ship route optimization Figure 4 As shown, Figure 4 The starting point is P0, and its longitude and latitude coordinates are Assume P i Point is the i-th waypoint, and its longitude and latitude coordinates are The destination point is P n The coordinates of the nth waypoint are Point P i+1 Point P i The coordinates of the next waypoint after The heading angle of the ship at the i-th waypoint is θ i .

[0054] According to the ship motion equation, the angular velocity of the ship along the latitude and longitude directions to the center of the earth is:

[0055]

[0056]

[0057] The coordinates of the i+1th waypoint can be obtained as:

[0058]

[0059]

[0060] Assumptions:

[0061]

[0062]

[0063] Considering that the value of Δt is not large, the error caused by the curvature of the earth can be greatly reduced. Therefore, the trajectory of the ship in the i-th route segment can be regarded as a displacement vector

[0064]

[0065] Therefore, the route drawn in the figure above can be described as path T starting from point A:

[0066]

[0067] Furthermore, the ship maneuvering and seakeeping coupling model is combined to calculate the ship's navigation state under the influence of wind, waves and currents, where the ship's pitch and heave amplitude is specifically:

[0068]

[0069]

[0070]

[0071]

[0072] Where, PA 1 / 3 and HA 1 / 3 are the pitch and heave amplitudes of the ship, and are the directional spectra of the ship's pitch and heave motions, is the angular encounter frequency, χ e is the relative wave direction, V is the ship's speed over the ground, and The frequency domain response equations for the ship's pitch and heave are used to determine the multi-objective function based on the ship's navigation state information. for, is the angular frequency of the incident wave, and g is the acceleration due to gravity.

[0073] Based on the above processing, in some embodiments, the optimization objectives of the ship navigation simulation model can be set according to actual conditions, such as at least three of the minimum sailing distance, sailing time, minimum fuel consumption and minimum sailing risk. In this embodiment, the three optimization objectives of minimum sailing distance, sailing time and minimum fuel consumption are taken as examples for illustration.

[0074] The multi-objective function of the ship navigation simulation model is:

[0075] min F(x)=[f1(x)+f2(x)+f3(x)] T

[0076] Where x is the ship route, F(x) is the multi-objective function, f1(x) is the sailing distance function, f2(x) is the sailing time function, and f3(x) is the fuel consumption function.

[0077] The specific navigation distance function f1(x) is:

[0078]

[0079] Where i is the route segment number, d i is the distance of the i-th route segment.

[0080] The specific function of the flight time is:

[0081]

[0082] Where, d i is the distance of the ith route segment, v i is the actual route speed of the ith route segment.

[0083] The fuel consumption function f3(x) is specifically:

[0084] f3(x)=KP

[0085] P = an 3 +bΔV+cΔV 2

[0086] Where f3(x) is the fuel consumption, i.e. the fuel consumption of the ship main engine at different speeds, K is the fuel consumption coefficient of the ship main engine, P is the power of the ship main engine, n is the speed of the ship main engine, ΔV is the stall speed of the ship, and a, b and c are constants.

[0087] In order to better determine the final optimal solution, in some embodiments, step S105 specifically includes: using the TOPSIS algorithm to sort the optimal solutions in the Pareto optimal solution set to determine the final optimal solution and its corresponding ship route.

[0088] In order to better implement a ship weather route optimization method in an embodiment of the present invention, based on a ship weather route optimization method, correspondingly, Figure 3 As shown, the embodiment of the present invention further provides a ship weather route optimization device 300, comprising:

[0089] The data acquisition module 301 is used to acquire ship navigation meteorological field data, construct an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, and determine the ship navigation environment data based on the atmospheric ocean wave numerical model;

[0090] The navigation simulation module 302 is used to construct a ship navigation simulation model based on the ship navigation environment data and determine the multi-objective function of the ship navigation simulation model;

[0091] The route optimization module 303 is used to solve the multi-objective function based on the preset ship route optimization algorithm, obtain the Pareto optimal solution set, and screen the Pareto optimal solution set to determine the final optimal solution and its corresponding ship route.

[0092] The ship weather route optimization method device 300 provided in the above embodiment can implement the technical solution described in the above ship weather route optimization method embodiment. The specific implementation principles of the above units can refer to the corresponding contents in the above ship weather route optimization method embodiment, which will not be repeated here.

[0093] like Figure 4 As shown, the present invention also provides an electronic device 400. The electronic device 400 includes a processor 401, a memory 402 and a display 403. Figure 4 Only some components of the electronic device 400 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0094] In some embodiments, the memory 402 may be an internal storage unit of the electronic device 400, such as a hard disk or memory of the electronic device 400. In other embodiments, the memory 402 may also be an external storage device of the electronic device 400, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 400.

[0095] Furthermore, the memory 402 may include both an internal storage unit of the electronic device 400 and an external storage device. The memory 402 is used to store application software installed in the electronic device 400 and various data.

[0096] In some embodiments, the processor 401 may be a central processing unit (CPU), a microprocessor or other data processing chip, used to run program codes or process data stored in the memory 402, such as the ship weather route optimization method of the present invention.

[0097] In some embodiments, the display 403 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 403 is used to display information on the electronic device 400 and to display a visual user interface. The components 401-403 of the electronic device 400 communicate with each other via a system bus.

[0098] In some embodiments of the present invention, when the processor 401 executes the ship weather route optimization method program in the memory 402, the following steps may be implemented:

[0099] Obtain ship navigation meteorological field data;

[0100] Construct an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, and determine the ship navigation environment data based on the atmospheric ocean wave numerical model;

[0101] Based on the ship navigation environment data, a ship navigation simulation model is constructed, and the multi-objective function of the ship navigation simulation model is determined;

[0102] Based on the preset ship route optimization algorithm, the multi-objective function is solved to obtain the Pareto optimal solution set;

[0103] The Pareto optimal solution set is screened to determine the final optimal solution and its corresponding ship route.

[0104] It should be understood that: when the processor 401 executes the ship weather route optimization method program in the memory 402, in addition to the above functions, other functions can also be implemented. For details, please refer to the description of the corresponding method embodiment above.

[0105] Furthermore, the embodiment of the present invention does not specifically limit the type of the electronic device 400 mentioned, and the electronic device 400 may be a portable electronic device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, etc. Exemplary embodiments of portable electronic devices include but are not limited to portable electronic devices equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable electronic device may also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the electronic device 400 may not be a portable electronic device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0106] Correspondingly, the present invention also provides a computer-readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the above-mentioned ship weather route optimization method are implemented.

[0107] The above is a detailed introduction to a ship weather route optimization method provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A ship weather route optimization method, characterized in that: include: Obtain ship navigation meteorological field data; Constructing an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, and determining ship navigation environment data based on the atmospheric ocean wave numerical model; Based on the ship navigation environment data, construct a ship navigation simulation model, and determine a multi-objective function of the ship navigation simulation model; Based on a preset ship route optimization algorithm, the multi-objective function is solved to obtain a Pareto optimal solution set; Screening the Pareto optimal solution set to determine the final optimal solution and its corresponding ship route; In the ship navigation simulation model, the ship's route can be described as a route from the longitude and latitude coordinates The starting point to the longitude and latitude coordinates is The path to the destination : In the formula, Indicates that the ship is The latitude and longitude coordinates of the waypoints, Indicates The trajectory of the ship within the route segment, Indicates that the ship is Speed ​​at each waypoint; In the ship navigation simulation model, the ship maneuvering and seakeeping coupling model is combined to calculate the ship navigation state under the influence of wind, wave and current. The ship pitch and heave amplitude is specifically: In the formula, and are the pitch and heave amplitudes of the ship, and are the directional spectra of the ship's pitch and heave motions, is the angular encounter frequency, is the relative wave direction, is the ship's speed over the ground, and The frequency domain response equations for the ship's pitch and heave are used to determine the multi-objective function based on the ship's navigation state information. is the incident wave angular frequency, is the acceleration due to gravity; The multi-objective function is: In the formula, For ship routes, is a multi-objective function, is the navigation distance function, is the navigation time function, is the fuel consumption function; Said flight distance function Specifically: In the formula, is the route segment number, For the The distance of the route segment; The flight time function is specifically: In the formula, For the The distance of the route segment, For the Actual route speed for route segment; The fuel consumption function Specifically: In the formula, is the fuel consumption, that is, the fuel consumption of the ship's main engine speed, is the fuel consumption coefficient of the ship's main engine, is the ship's main engine power, is the main engine speed of the ship, The ship stalls. , and is a constant.

2. The ship weather route optimization method according to claim 1, characterized in that: The atmospheric ocean wave numerical model is constructed based on the ship navigation meteorological field data, including: Based on the ship navigation meteorological field data, determine whether the ship navigation area is in severe weather; If the ship is sailing in an area with bad weather, fine grid settings and downscaling settings will be performed to construct a numerical model of atmospheric and oceanic waves.

3. The ship weather route optimization method according to claim 1, characterized in that: The ship navigation environment data includes air pressure, effective wave height, wind speed, wind direction, wave height, wave period and direction, swell height, swell period and direction, ocean current size and direction, typhoon wind speed and track information.

4. The ship weather route optimization method according to claim 1, characterized in that: The ship navigation simulation model is a combined model of ship maneuvering and seakeeping coupling models.

5. The ship weather route optimization method according to claim 1, characterized in that: The optimization algorithm is one of a genetic algorithm, a particle swarm algorithm and a simulated annealing algorithm.

6. The ship weather route optimization method according to claim 1, characterized in that: The Pareto optimal solution set is screened to determine a final optimal solution and a corresponding ship route, including: using a TOPSIS algorithm to sort the optimal solutions in the Pareto optimal solution set to determine a final optimal solution and a corresponding ship route.

7. A ship weather route optimization device, characterized in that: include: A data acquisition module, used to acquire ship navigation meteorological field data, construct an atmospheric ocean wave numerical model based on the ship navigation meteorological field data, and determine ship navigation environment data based on the atmospheric ocean wave numerical model; A navigation simulation module, used to construct a ship navigation simulation model based on the ship navigation environment data, and determine the multi-objective function of the ship navigation simulation model; A route optimization module is used to solve the multi-objective function based on a preset ship route optimization algorithm to obtain a Pareto optimal solution set, and to screen the Pareto optimal solution set to determine a final optimal solution and its corresponding ship route; In the ship navigation simulation model, the ship's route can be described as a route from the longitude and latitude coordinates The starting point to the longitude and latitude coordinates is The path to the destination : In the formula, Indicates that the ship is The latitude and longitude coordinates of the waypoints, Indicates The trajectory of the ship within the route segment, Indicates that the ship is Speed ​​at each waypoint; In the ship navigation simulation model, the ship maneuvering and seakeeping coupling model is combined to calculate the ship navigation state under the influence of wind, wave and current. The ship pitch and heave amplitude is specifically: In the formula, and are the pitch and heave amplitudes of the ship, and are the directional spectra of the ship's pitch and heave motions, is the angular encounter frequency, is the relative wave direction, is the ship's speed over the ground, and The frequency domain response equations for the ship's pitch and heave are used to determine the multi-objective function based on the ship's navigation state information. is the incident wave angular frequency, is the acceleration due to gravity; The multi-objective function is: In the formula, For ship routes, is a multi-objective function, is the navigation distance function, is the navigation time function, is the fuel consumption function; Said flight distance function Specifically: In the formula, is the route segment number, For the The distance of the route segment; The flight time function is specifically: In the formula, For the The distance of the route segment, For the Actual route speed for route segment; The fuel consumption function Specifically: In the formula, is the fuel consumption, that is, the fuel consumption of the ship's main engine speed, is the fuel consumption coefficient of the ship's main engine, is the ship's main engine power, is the main engine speed of the ship, The ship stalls. , and is a constant.

8. An electronic device, characterized in that: including memory and processor; The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps of the ship weather route optimization method described in any one of claims 1 to 6 above.

9. A computer-readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the ship weather route optimization method described in any one of claims 1 to 6 are implemented.

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