CN111932946A - Hydrodynamic navigation safety early warning method and system, computer equipment and storage medium - Google Patents
Hydrodynamic navigation safety early warning method and system, computer equipment and storage medium Download PDFInfo
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Abstract
The invention relates to a hydrodynamic navigation safety early warning method, a hydrodynamic navigation safety early warning system, computer equipment and a storage medium, and the technical scheme is as follows: the method comprises the following steps: collecting ship information, channel data of a preset water area and water flow data of the preset water area; acquiring hydrodynamic force data of the preset water area according to the channel data and the water flow data of the preset water area; establishing a hydrodynamic model corresponding to the preset water area according to the channel data of the preset water area and the hydrodynamic data of the preset water area; obtaining a navigability area of the preset water area according to the ship information and the hydrodynamic model, and if the ship deviates from the navigability area, sending out a navigation safety alarm; this application has the advantage of stability and security when guaranteeing boats and ships and traveles.
Description
Technical Field
The invention relates to the technical field of ship navigation, in particular to a hydrodynamic navigation safety early warning method, a hydrodynamic navigation safety early warning system, computer equipment and a storage medium.
Background
Shipping is an important component of a comprehensive transportation system as a national strategic basic industry, and is also an important strategic resource for realizing sustainable development of economy and society. The channel digitization is an important component and development trend of shipping informatization, and plays a significant role in safety and efficient management of river shipping.
The natural river channel refers to a natural river capable of carrying out water transportation, and the inland waterway channel refers to a general term of a natural river channel, a canal, a lake, a reservoir and the like. In a waterway, the water area having a certain depth, width, clearance dimension and bending radius and providing a safe navigation environment for the ship is called a waterway. The standards are different, the channel classification is different, and the channel classification can be divided into a national channel, a local channel and a special channel according to the management attribute of the channel; the method can be divided into a natural channel, an artificial channel and a canalized channel according to channel forming reasons; dividing the navigation channel into an inland navigation channel and a coastal navigation channel according to the region of the navigation channel; the navigation method can be divided into a bridge area navigation channel, a port area navigation channel, a dam area navigation channel and the like according to the characteristics of the located navigation section.
However, since the channel information is complex, the influence of the water surface conditions such as water depth, flow velocity, water surface gradient, and reflux degree, which are difficult to be observed directly, on the ship navigation is particularly serious, and the influence of the bridge area and the ship lock on the channel flow state, and the change of the water temperature, the salt content, the icing degree and the like on the channel flow state all cause different degrees of influence on the channel navigation safety, the research and development of a system capable of visually understanding the water flow condition of the channel and making the ship navigation safer has become a technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a hydrodynamic navigation safety early warning method, a hydrodynamic navigation safety early warning system, computer equipment and a storage medium, and has the advantages of ensuring the stability and safety of a ship during running.
The technical purpose of the invention is realized by the following technical scheme: hydrodynamic navigation safety early warning method is characterized by comprising the following steps:
collecting ship information, channel data of a preset water area and water flow data of the preset water area;
acquiring hydrodynamic force data of the preset water area according to the channel data and the water flow data of the preset water area;
establishing a hydrodynamic model corresponding to the preset water area according to the channel data of the preset water area and the hydrodynamic data of the preset water area;
and obtaining a navigability area of the preset water area according to the ship information and the hydrodynamic model, and if the ship deviates from the navigability area, sending out a navigation safety alarm.
Optionally, the obtaining hydrodynamic data of the predetermined water area according to the channel data and the water flow data of the predetermined water area includes:
obtaining navigation data of a predetermined water area according to the channel data of the predetermined water area, wherein the navigation data comprises channel planning data, channel grade data, channel water depth, channel width, channel curvature radius, net height value and net span value;
calculating the water surface ratio drop, the flow speed, the flow direction and the flow state of a preset water area according to the water flow data and the navigation data;
and obtaining the hydrodynamic data of the predetermined water area according to the water surface ratio drop, the flow speed, the flow direction and the flow state of the predetermined water area.
Optionally, the establishing a hydrodynamic model corresponding to the predetermined water area according to the channel data and the hydrodynamic data of the predetermined water area includes:
establishing a channel three-dimensional model of the predetermined water area according to channel data of the predetermined water area;
establishing a water flow model of the predetermined water area according to the hydrodynamic data of the predetermined water area;
and superposing the water flow model of the preset water area and the three-dimensional channel model of the preset water area to obtain the hydrodynamic model of the preset water area.
Optionally, the hydrodynamic data of the predetermined water area includes a water surface gradient, a flow rate, a flow direction and a flow state of the predetermined water area;
the obtaining of the water flow model of the predetermined water area according to the hydrodynamic data of the predetermined water area includes:
carrying out motion deformation on the vector field according to the flow direction of the preset water area to obtain a distorted grid;
rendering the distorted grids according to the flow velocity of the preset water area to obtain a flow velocity rendering model;
rendering the flow rate rendering model according to the water surface ratio drop of the preset water area to obtain a water surface ratio drop rendering model;
and rendering the water surface gradient rendering model according to the flow state of the preset water area to obtain a water flow model of the preset water area.
Optionally, the obtaining a seaworthy area of the predetermined water area according to the ship information and the hydrodynamic model, and if the ship deviates from the seaworthy area, sending a navigation safety alarm, includes:
obtaining a risk distribution area in the predetermined water area according to the hydrodynamic model;
screening out a seaworthy area which meets the ship draft and avoids the risk distribution area in the hydrodynamic model based on the ship information;
and arranging an electronic navigation mark at the boundary of the airworthiness area and the risk distribution area, and if a ship drives into the risk distribution area from the airworthiness area, sending out a navigation safety alarm by the electronic navigation mark.
Optionally, the obtaining a seaworthy area of the predetermined water area according to the ship information and the hydrodynamic model, and if the ship deviates from the seaworthy area, sending a navigation safety alarm, further includes:
setting a hydrodynamic threshold value according to the hydrodynamic data of the preset water area;
and comparing the real-time hydrodynamic data of the preset water area with the hydrodynamic threshold, and if the real-time hydrodynamic data of the preset water area exceeds the hydrodynamic threshold, sending out hydrodynamic alarm information with abnormal hydrodynamic data of the preset water area.
Optionally, the obtaining a seaworthy area of the predetermined water area according to the ship information and the hydrodynamic model, and if the ship deviates from the seaworthy area, sending a navigation safety alarm, further includes:
setting a plurality of navigation channels according to the hydrodynamic model;
virtual navigation marks are arranged on the boundaries of the plurality of branch navigation channels;
and planning a corresponding planned channel for the ship according to the ship information, and if the ship deviates from the corresponding planned channel, sending out a ship yaw early warning by the virtual navigation mark.
Hydrodynamic navigation safety early warning system, its characterized in that includes:
the data collection module is used for collecting ship information, channel data of a preset water area and water flow data of the preset water area;
the data processing module is used for obtaining hydrodynamic force data of the preset water area according to the channel data and the water flow data of the preset water area;
the data modeling module is used for establishing a hydrodynamic model corresponding to the preset water area according to the channel data of the preset water area and the hydrodynamic data of the preset water area;
and the navigation early warning module is used for obtaining a navigability area of the preset water area according to the ship information and the hydrodynamic model, and sending out a navigation safety alarm if the ship is separated from the navigability area.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the method described above when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
In conclusion, the invention has the following beneficial effects: the method comprises the steps that a hydrodynamic model corresponding to a water area is established, and a navigation track of a ship is planned by combining ship information, so that the ship avoids a risk distribution area, and the stability and the safety of the ship during running are ensured; and when the ship deviates from the air course, the safety early warning is sent in time, and the ship number of the ship is sent to the air course management system at the same time, so that the monitoring on the ship is achieved, and the management efficiency and the management capability are improved.
Drawings
Fig. 1 is a schematic flow chart of a hydrodynamic navigation safety early warning method provided by the present invention;
FIG. 2 is a schematic flow chart of step 200 in FIG. 1;
FIG. 3 is a schematic flow chart of step 300 in FIG. 1;
fig. 4 is a block diagram of a hydrodynamic navigation safety early warning system provided by the present invention;
FIG. 5 is a block diagram of the data processing module of FIG. 4;
FIG. 6 is a block diagram of the structure of the data modeling module of FIG. 4;
FIG. 7 is an internal structural view of a computer device according to an embodiment of the present invention;
FIG. 8 is a schematic representation of the processing of the water flow model of the present invention;
FIG. 9 is a schematic view of a hydrodynamic model of the present invention;
fig. 10 is a schematic diagram of the invention for planning the course of a ship.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The invention provides a hydrodynamic navigation safety early warning method, as shown in fig. 1, comprising the following steps:
200, acquiring hydrodynamic force data of the preset water area according to the channel data and the water flow data of the preset water area;
and step 400, obtaining a seaworthy area of the preset water area according to the ship information and the hydrodynamic model, and if the ship deviates from the seaworthy area, sending out a navigation safety alarm.
Specifically, when a ship navigates on a channel, many factors affecting navigation capacity and navigation safety of the ship are provided, such as channel grade, channel environment, meteorological conditions, navigation mode, human factors and the like, navigation water flow judgment standards are provided in different countries, and corresponding navigation water flow condition judgment standards are provided in different river sections and navigation sections and different stages of ship technology development. The navigation condition is a comprehensive effect generated by the combined action of various factors such as water flow state, flow velocity, waves, water surface ratio and the like, so that the navigation condition is calculated according to the channel data and the water flow data of the current water area to obtain hydrodynamic force data, a hydrodynamic force model of the current water area is established according to the hydrodynamic force data, the navigation water flow condition in the current water area can be visually observed, the navigation condition is judged according to the draft of the ship and the basic size of the ship to obtain a navigability area suitable for the ship to navigate, whether the ship is located in the navigability area is judged according to the positioning information of the ship, if the ship deviates from the navigability area, a navigation safety alarm is sent to the ship, namely, the ship deviates from the navigability area is indicated, and the ship is required to return to the navigability area in time to avoid the ship from being in danger.
Further, as shown in fig. 2, the obtaining hydrodynamic data of the predetermined water area according to the channel data and the water flow data of the predetermined water area includes:
and step 230, obtaining hydrodynamic data of the predetermined water area according to the water surface ratio drop, the flow speed, the flow direction and the flow state of the predetermined water area.
Specifically, when hydrodynamic data are calculated, channel planning data, channel grade data, channel water depth, channel width, channel curvature radius, net height value and net span value are obtained according to channel data, wherein the channel water depth, the channel width and the channel curvature radius are basic data of a channel, and the channel water depth is a basic condition for ensuring safe navigation of a ship and is a main factor influencing the navigation capacity of the ship. The channel water depth refers to the vertical distance from the channel water level to the bottom of the riverbed, and is also the minimum water depth on the shoal within the channel width range under the condition of the designed lowest navigation water level; the channel width is closely related to the economic benefits of inland waterway transportation, the navigation capacity of the inland waterway and the safety of ship navigation are directly influenced, the influence of the channel width on the navigation capacity of the ship has many factors, such as that the ship needs a certain track width during navigation and generates a certain offset under the influence of external forces of water flow, wind wave and the like, in addition, the conditions of shore suction, mutual suction and the like can occur in the navigation process, and the influence of curvature radius of a bent navigation section on the channel width can occur, so the minimum channel water depth, the minimum channel width and the minimum channel curvature radius are calculated; the net height value and the net span value are used for measuring and calculating river-crossing buildings and are used for judging whether ships can pass through or not; then, water surface reduction, flow speed, flow direction and flow state of a preset water area can be obtained according to the specific size of the channel and the water flow data; and because the environmental data of the aquatic buildings and aquatic activities have great influence on the water flow data, the water blocking height generated by the pier, the gate, the port, the water conservancy facilities and the like is required to be combined for calculation; and obtaining hydrodynamic data.
Further, as shown in fig. 3, the establishing a hydrodynamic model corresponding to the predetermined water area according to the channel data and the hydrodynamic data of the predetermined water area includes:
and 330, superposing the water flow model of the preset water area and the three-dimensional channel model of the preset water area to obtain a hydrodynamic model of the preset water area.
Specifically, the method includes three-dimensionally modeling a channel according to the three-dimensional size of the channel to obtain a three-dimensional model of the channel, then building a water flow model according to the three-dimensional modeling of the channel and hydrodynamic data, and then overlaying the water flow model and the three-dimensional model of the channel to obtain a hydrodynamic model of a predetermined water area (see fig. 9).
Optionally, as shown in fig. 8, the hydrodynamic data of the predetermined body of water includes a surface gradient, a flow velocity, a flow direction and a flow state of the predetermined body of water;
the obtaining of the water flow model of the predetermined water area according to the hydrodynamic data of the predetermined water area includes:
carrying out motion deformation on the vector field according to the flow direction of the preset water area to obtain a distorted grid;
rendering the distorted grids according to the flow velocity of the preset water area to obtain a flow velocity rendering model;
rendering the flow rate rendering model according to the water surface ratio drop of the preset water area to obtain a water surface ratio drop rendering model;
and rendering the water surface gradient rendering model according to the flow state of the preset water area to obtain a water flow model of the preset water area.
Specifically, the hydrodynamic data comprise a water surface gradient, a flow rate, a flow direction and a flow state, so that two-dimensional modeling is firstly carried out on the hydrodynamic data, a vector field is stretched, distorted and deformed along the water flow direction to obtain a distorted grid image for marking the flow area and the flow direction of water flow in a channel, then the distorted grid is rendered according to the flow rate, the higher the flow rate is, the darker the rendering color is, and a flow rate rendering model is obtained; further rendering the flow rendering model according to the water surface gradient, and performing three-dimensional stretching on the flow rendering model to display the water surface gradient to obtain a water surface gradient rendering graph; and finally, rendering and marking the region with abnormal flow state according to the flow state to obtain a water flow model.
Further, the obtaining a seaworthy area of the predetermined water area according to the ship information and the hydrodynamic model, and if the ship deviates from the seaworthy area, issuing a navigation safety alarm includes:
obtaining a risk distribution area in the predetermined water area according to the hydrodynamic model;
screening out a seaworthy area which meets the ship draft and avoids the risk distribution area in the hydrodynamic model based on the ship information;
and arranging an electronic navigation mark at the boundary of the airworthiness area and the risk distribution area, and if a ship drives into the risk distribution area from the airworthiness area, sending out a navigation safety alarm by the electronic navigation mark.
Specifically, a risk distribution area is marked out from a flow state abnormal area, then areas outside the risk distribution area are judged according to the ship height, the ship width and the draft of the ship, and the ship needs to be free from the influence of the risk distribution area when sailing, so that a seaworthy area suitable for sailing of the ship is obtained; the seaworthy area is an area which is most suitable for the ship to sail and is obtained by analyzing viscous factors generated by frictional resistance of the ship, interference between boundary layers and waves, wake flow between the ship and the ship, submerged bodies and the like according to ship information and a hydrodynamic model; setting an electronic navigation mark at the boundary of the airworthiness area and the boundary of the risk distribution area to form an electronic fence, wherein when the ship exits from the airworthiness area, the electronic navigation mark detects that the ship exits, and the electronic navigation mark can send a navigation safety alarm that the ship exits from the airworthiness area to the ship in time; in practical application, the setting of the electronic fence is not limited to the electronic navigation mark, and an AIS virtual navigation mark can be set by setting an AIS base station; when the ship drives into the risk distribution area, the electronic navigation mark, the AIS base station or the added VHF base station of the risk distribution area sends a navigation safety alarm that the ship drives into the risk distribution area and please adjust course separation in time.
In practical application, the influence of the wind speed and the water quality on the flow regime of the water flow needs to be considered, wherein the water quality comprises the sand content, the salt content, the water temperature and the ice layer mass, the wind speed can change the flow regime of the water flow, and the sand content, the salt content, the water temperature and the ice layer mass in the water body can influence the resistance and the interference of the ship.
Further, the obtaining a seaworthy area of the predetermined water area according to the ship information and the hydrodynamic model, and if the ship deviates from the seaworthy area, sending a navigation safety alarm, further includes:
setting a hydrodynamic threshold value according to the hydrodynamic data of the preset water area;
and comparing the real-time hydrodynamic data of the preset water area with the hydrodynamic threshold, and if the real-time hydrodynamic data of the preset water area exceeds the hydrodynamic threshold, sending out hydrodynamic alarm information with abnormal hydrodynamic data of the preset water area.
Specifically, historical data collection is carried out on the water surface reduction, the flow rate, the flow direction and the flow state of a preset water area, hydrodynamic threshold values when the water surface reduction, the flow rate, the flow direction and the flow state are in normal values are obtained, then the real-time water surface reduction, the real-time flow rate, the real-time flow direction and the real-time flow state are compared with the hydrodynamic threshold values, and if any one of the water surface reduction, the real-time flow rate, the real-time flow direction and the real-time flow state exceeds the hydrodynamic threshold value, alarm information that the hydrodynamic data of the preset water area are in an abnormal state is sent to. The water safety management department and the unit can carry out the process of closing or stopping the navigation on the navigation channel according to the received alarm information and send out the announcement of closing or stopping the navigation to the ship.
Further, the obtaining a seaworthy area of the predetermined water area according to the ship information and the hydrodynamic model, and if the ship deviates from the seaworthy area, sending a navigation safety alarm, further includes:
setting a plurality of navigation channels according to the hydrodynamic model;
virtual navigation marks are arranged on the boundaries of the plurality of branch navigation channels;
and planning a corresponding planned channel for the ship according to the ship information, and if the ship deviates from the corresponding planned channel, sending out a ship yaw early warning by the virtual navigation mark.
Specifically, the method comprises the steps of dividing a channel according to a hydrodynamic model and ship classification conditions, dividing the channel into a first-class ship channel, a second-class ship channel, a third-class ship channel, a fourth-class ship channel and a fifth-class ship channel according to a first-class ship, a second-class ship channel, a third-class ship channel, a fourth-class ship channel and a fifth-class ship channel, guiding the ships of all classes to the corresponding branch channels, and setting virtual navigation marks on the boundaries of all the branch channels; the virtual navigation mark is set through the AIS base station, and if the ship deviates from the corresponding level of the branch navigation channel, the AIS base station or the added VHF base station sends ship yaw early warning to the ship.
In practical application, the hydrodynamic navigation safety early warning method establishes a hydrodynamic model corresponding to a water area and plans the navigation track of the ship by combining ship information, so that the ship avoids a risk distribution area and the stability and safety of the ship during running are ensured; and when the ship deviates from the air course, the safety early warning is sent in time, and the ship number of the ship is sent to the air course management system at the same time, so that the monitoring on the ship is achieved, and the management efficiency and the management capability are improved.
It should be understood that although the various steps in the flow charts of fig. 1-3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-3 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
As shown in fig. 4, the present invention also provides a hydrodynamic navigation safety early warning system, which includes:
the data collection module 10 is used for collecting ship information, channel data of a preset water area and water flow data of the preset water area;
the data processing module 20 is configured to obtain hydrodynamic data of the predetermined water area according to the channel data and the water flow data of the predetermined water area;
the data modeling module 30 is configured to establish a hydrodynamic model corresponding to the predetermined water area according to the channel data of the predetermined water area and the hydrodynamic data of the predetermined water area;
and the navigation early warning module 40 is used for obtaining a navigability area of the preset water area according to the ship information and the hydrodynamic model, and sending out a navigation safety alarm if the ship is separated from the navigability area.
Further, as shown in fig. 5, the data processing module 20 includes:
the navigation data calculation unit 21 is configured to obtain navigation data of a predetermined water area according to the channel data of the predetermined water area, where the navigation data includes channel planning data, channel grade data, channel depth, channel width, channel curvature radius, net height value, and net span value;
the water flow data calculation unit 22 is used for calculating and obtaining the water surface ratio drop, the flow speed, the flow direction and the flow state of a preset water area according to the water flow data and the navigation data;
and the hydrodynamic data calculation unit 23 is configured to obtain hydrodynamic data of the predetermined water area according to the water surface drop, the flow speed, the flow direction, and the flow state of the predetermined water area.
Further, as shown in fig. 6, the data modeling module 30 includes:
a channel modeling unit 31, configured to establish a channel three-dimensional model of a predetermined water area according to channel data of the predetermined water area;
a water flow modeling unit 32, configured to establish a water flow model of the predetermined water area according to the hydrodynamic data of the predetermined water area;
and the superposition processing unit 33 is used for superposing the water flow model of the predetermined water area and the three-dimensional channel model of the predetermined water area to obtain a hydrodynamic model of the predetermined water area.
Optionally, the hydrodynamic data of the predetermined body of water includes a surface gradient, a flow rate, a flow direction and a flow regime of the predetermined body of water, and the water flow modeling unit includes:
the flow direction grid unit is used for carrying out motion deformation on the vector field according to the flow direction of the preset water area to obtain a distorted grid;
the flow velocity rendering unit is used for rendering the distorted grids according to the flow velocity of the preset water area to obtain a flow velocity rendering model;
the water surface gradient rendering unit is used for rendering the flow rate rendering model according to the water surface gradient of the preset water area to obtain a water surface gradient rendering model;
and the flow state rendering unit is used for rendering the water surface gradient rendering model according to the flow state of the preset water area to obtain a water flow model of the preset water area.
Further, the navigation early warning module comprises:
the risk area dividing unit is used for obtaining a risk distribution area in the preset water area according to the hydrodynamic model;
the seaworthiness region division unit is used for screening out a seaworthiness region which meets ship draft and avoids the risk distribution region in the hydrodynamic model based on the ship information;
and the navigation alarm unit is used for setting an electronic navigation mark at the boundary of the airworthiness area and the risk distribution area, and if a ship drives into the risk distribution area from the airworthiness area, the electronic navigation mark sends out navigation safety alarm.
Optionally, the navigation early warning module further includes:
the threshold setting unit is used for setting a hydrodynamic threshold according to the hydrodynamic data of the preset water area;
and the hydrodynamic alarm unit is used for comparing the real-time hydrodynamic data of the preset water area with the hydrodynamic threshold value, and if the real-time hydrodynamic data of the preset water area exceeds the hydrodynamic threshold value, the hydrodynamic alarm unit sends out hydrodynamic alarm information with abnormal hydrodynamic data of the preset water area.
Optionally, the navigation early warning module further includes:
the sub-navigation channel setting unit is used for setting a plurality of sub-navigation channels according to the hydrodynamic model;
the virtual navigation mark unit is used for arranging virtual navigation marks on the boundaries of the plurality of branch navigation channels;
and the yaw early warning unit is used for planning a corresponding planned channel for the ship according to the ship information, and if the ship deviates from the corresponding planned channel, the virtual navigation mark sends out ship yaw early warning.
Specific limitations on the hydrodynamic navigation safety early warning system can be referred to the above limitations on the hydrodynamic navigation safety early warning method, and are not described herein again. All modules in the hydrodynamic navigation safety early warning system can be completely or partially realized through software, hardware and a combination of the software and the hardware. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 7. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The computer program is executed by a processor to implement a hydrodynamic navigation safety precaution method.
Those skilled in the art will appreciate that the architecture shown in fig. 7 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program: collecting ship information, channel data of a preset water area and water flow data of the preset water area; acquiring hydrodynamic force data of the preset water area according to the channel data and the water flow data of the preset water area; establishing a hydrodynamic model corresponding to the preset water area according to the channel data of the preset water area and the hydrodynamic data of the preset water area; and obtaining a navigability area of the preset water area according to the ship information and the hydrodynamic model, and if the ship deviates from the navigability area, sending out a navigation safety alarm.
In one embodiment, the obtaining hydrodynamic data of the predetermined body of water from the channel data and the current data of the predetermined body of water comprises: obtaining navigation data of a predetermined water area according to the channel data of the predetermined water area, wherein the navigation data comprises channel planning data, channel grade data, channel water depth, channel width, channel curvature radius, net height value and net span value; calculating the water surface ratio drop, the flow speed, the flow direction and the flow state of a preset water area according to the water flow data and the navigation data; and obtaining the hydrodynamic data of the predetermined water area according to the water surface ratio drop, the flow speed, the flow direction and the flow state of the predetermined water area.
In one embodiment, the establishing a hydrodynamic model corresponding to the predetermined body of water according to the channel data and the hydrodynamic data of the predetermined body of water includes: establishing a channel three-dimensional model of the predetermined water area according to channel data of the predetermined water area; establishing a water flow model of the predetermined water area according to the hydrodynamic data of the predetermined water area; and superposing the water flow model of the preset water area and the three-dimensional channel model of the preset water area to obtain the hydrodynamic model of the preset water area.
In one embodiment, the hydrodynamic data of the predetermined body of water includes a surface gradient, a flow rate, a flow direction, and a flow regime of the predetermined body of water; the obtaining of the water flow model of the predetermined water area according to the hydrodynamic data of the predetermined water area includes: carrying out motion deformation on the vector field according to the flow direction of the preset water area to obtain a distorted grid; rendering the distorted grids according to the flow velocity of the preset water area to obtain a flow velocity rendering model; rendering the flow rate rendering model according to the water surface ratio drop of the preset water area to obtain a water surface ratio drop rendering model; and rendering the water surface gradient rendering model according to the flow state of the preset water area to obtain a water flow model of the preset water area.
In one embodiment, said obtaining an airworthiness region of said predetermined water area based on said vessel information and said hydrodynamic model, and issuing a navigation safety alarm if the vessel deviates from said airworthiness region, comprises: obtaining a risk distribution area in the predetermined water area according to the hydrodynamic model; screening out a seaworthy area which meets the ship draft and avoids the risk distribution area in the hydrodynamic model based on the ship information; and arranging an electronic navigation mark at the boundary of the airworthiness area and the risk distribution area, and if a ship drives into the risk distribution area from the airworthiness area, sending out a navigation safety alarm by the electronic navigation mark.
In one embodiment, the obtaining a seaworthy region of the predetermined water area according to the ship information and the hydrodynamic model, and issuing a navigation safety alarm if the ship deviates from the seaworthy region, further includes: setting a hydrodynamic threshold value according to the hydrodynamic data of the preset water area; and comparing the real-time hydrodynamic data of the preset water area with the hydrodynamic threshold, and if the real-time hydrodynamic data of the preset water area exceeds the hydrodynamic threshold, sending out hydrodynamic alarm information with abnormal hydrodynamic data of the preset water area.
In one embodiment, the obtaining a seaworthy region of the predetermined water area according to the ship information and the hydrodynamic model, and issuing a navigation safety alarm if the ship deviates from the seaworthy region, further includes: setting a plurality of navigation channels according to the hydrodynamic model; virtual navigation marks are arranged on the boundaries of the plurality of branch navigation channels; and planning a corresponding planned channel for the ship according to the ship information, and if the ship deviates from the corresponding planned channel, sending out a ship yaw early warning by the virtual navigation mark.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. Hydrodynamic navigation safety early warning method is characterized by comprising the following steps:
collecting ship information, channel data of a preset water area and water flow data of the preset water area;
acquiring hydrodynamic force data of the preset water area according to the channel data and the water flow data of the preset water area;
establishing a hydrodynamic model corresponding to the preset water area according to the channel data of the preset water area and the hydrodynamic data of the preset water area;
and obtaining a navigability area of the preset water area according to the ship information and the hydrodynamic model, and if the ship deviates from the navigability area, sending out a navigation safety alarm.
2. The method of claim 1, wherein the deriving hydrodynamic data for the predetermined body of water from the channel data and the current data for the predetermined body of water comprises:
obtaining navigation data of a predetermined water area according to the channel data of the predetermined water area, wherein the navigation data comprises channel planning data, channel grade data, channel water depth, channel width, channel curvature radius, net height value and net span value;
calculating the water surface ratio drop, the flow speed, the flow direction and the flow state of a preset water area according to the water flow data and the navigation data;
and obtaining the hydrodynamic data of the predetermined water area according to the water surface ratio drop, the flow speed, the flow direction and the flow state of the predetermined water area.
3. The method of claim 1, wherein the establishing a hydrodynamic model corresponding to the predetermined body of water based on the channel data and the hydrodynamic data of the predetermined body of water comprises:
establishing a channel three-dimensional model of the predetermined water area according to channel data of the predetermined water area;
establishing a water flow model of the predetermined water area according to the hydrodynamic data of the predetermined water area;
and superposing the water flow model of the preset water area and the three-dimensional channel model of the preset water area to obtain the hydrodynamic model of the preset water area.
4. The method of claim 3, wherein the hydrodynamic data of the predetermined body of water includes a surface gradient, a flow rate, a flow direction, and a flow regime of the predetermined body of water;
the obtaining of the water flow model of the predetermined water area according to the hydrodynamic data of the predetermined water area includes:
carrying out motion deformation on the vector field according to the flow direction of the preset water area to obtain a distorted grid;
rendering the distorted grids according to the flow velocity of the preset water area to obtain a flow velocity rendering model;
rendering the flow rate rendering model according to the water surface ratio drop of the preset water area to obtain a water surface ratio drop rendering model;
and rendering the water surface gradient rendering model according to the flow state of the preset water area to obtain a water flow model of the preset water area.
5. The method of claim 1, wherein the deriving an seaworthy region of the predetermined body of water from the vessel information and the hydrodynamic model, and issuing a navigable safety alert if the vessel deviates from the seaworthy region comprises:
obtaining a risk distribution area in the predetermined water area according to the hydrodynamic model;
screening out a seaworthy area which meets the ship draft and avoids the risk distribution area in the hydrodynamic model based on the ship information;
and arranging an electronic navigation mark at the boundary of the airworthiness area and the risk distribution area, and if a ship drives into the risk distribution area from the airworthiness area, sending out a navigation safety alarm by the electronic navigation mark.
6. The method of claim 1, wherein the deriving a seaworthiness region for the predetermined body of water based on the vessel information and the hydrodynamic model, and issuing a navigation safety warning if the vessel deviates from the seaworthiness region, further comprises:
setting a hydrodynamic threshold value according to the hydrodynamic data of the preset water area;
and comparing the real-time hydrodynamic data of the preset water area with the hydrodynamic threshold, and if the real-time hydrodynamic data of the preset water area exceeds the hydrodynamic threshold, sending out hydrodynamic alarm information with abnormal hydrodynamic data of the preset water area.
7. The method of claim 1, wherein the deriving a seaworthiness region for the predetermined body of water based on the vessel information and the hydrodynamic model, and issuing a navigation safety warning if the vessel deviates from the seaworthiness region, further comprises:
setting a plurality of navigation channels according to the hydrodynamic model;
virtual navigation marks are arranged on the boundaries of the plurality of branch navigation channels;
and planning a corresponding planned channel for the ship according to the ship information, and if the ship deviates from the corresponding planned channel, sending out a ship yaw early warning by the virtual navigation mark.
8. Hydrodynamic navigation safety early warning system, its characterized in that includes:
the data collection module is used for collecting ship information, channel data of a preset water area and water flow data of the preset water area;
the data processing module is used for obtaining hydrodynamic force data of the preset water area according to the channel data and the water flow data of the preset water area;
the data modeling module is used for establishing a hydrodynamic model corresponding to the preset water area according to the channel data of the preset water area and the hydrodynamic data of the preset water area;
and the navigation early warning module is used for obtaining a navigability area of the preset water area according to the ship information and the hydrodynamic model, and sending out a navigation safety alarm if the ship is separated from the navigability area.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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