CN117741827A - Marine weather information prediction display system for ship navigation - Google Patents
Marine weather information prediction display system for ship navigation Download PDFInfo
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Abstract
The application provides an offshore weather information prediction display system for ship navigation, which comprises a weather information receiving module, a weather information storage module, a weather information processing module and a weather information display module; the meteorological information receiving module is used for receiving the original data from different data sources; the weather information processing module is used for converting and fusing two-dimensional data in the original data into one-dimensional weather data, training the fused one-dimensional weather data through an LSTM model, and predicting marine weather information in a certain period of time; the weather information storage module is used for storing the original data, the converted and fused one-dimensional weather data and predicted marine weather information in a certain period of time. The marine weather information prediction display system for ship navigation can predict marine weather information in a certain period of time in real time, display weather data of different sources through the weather information display module, and effectively guarantee the navigation safety of unmanned ships.
Description
Technical Field
The invention relates to the technical field of ship meteorological environment information, in particular to an offshore meteorological information prediction display system for ship navigation.
Background
The meteorological environment is important information directly influencing the navigation safety of the ship, and the meteorological information most concerned by experienced captchas generally comprises wind speed, wave height, visibility, ocean currents and different weather phenomena; at the same time, the information is also an important reference basis for the subsequent planning of the navigation route.
Currently, weather forecast data sent by a ground weather station at regular time are generally referred to aiming at weather information of a large-scale sea area, but products of the weather forecast data often have larger space and time resolution; in addition, in the sailing process, the marine meteorological environment is more complex, so that the accuracy of the weather forecast data is more different from the true value. The ship weather instrument carried by the ship can accurately measure the information such as wind speed, wind direction, air temperature and the like of the ship position. However, due to the difference between the time resolution and the space resolution, the two information cannot be fused and referenced, and the judgment needs to be made by relying on the experience of a shipman.
For unmanned ships, correct prediction of marine weather information is a necessary condition for ensuring the operation safety of the ships, and provides real-time effective references for shore-end ship operators.
Disclosure of Invention
In view of the problem that unmanned ships cannot make real-time judgment on marine weather information in the prior art, the application provides a marine weather information prediction display system for ship navigation. According to the marine weather information prediction display system for ship navigation, the weather information receiving module, the weather information storage module, the weather information processing module and the weather information display module are arranged, so that the marine weather information in a certain period of time can be predicted in real time, weather data of different sources are displayed through the weather information display module, and meanwhile, the navigation safety of unmanned ships is effectively guaranteed.
In one embodiment of the present application, there is provided an offshore weather information prediction display system for ship navigation, including:
the system comprises a weather information receiving module, a data processing module and a data processing module, wherein the weather information receiving module is used for receiving original data from different data sources, and the original data comprise real-time weather information, forecast weather information, ship positioning information and ship draft information;
the weather information storage module is used for storing the original data sent by the weather information receiving module;
the weather information processing module is used for converting and fusing two-dimensional data in the original data sent to the weather information processing module by the weather information storage module to form one-dimensional weather data, and predicting marine weather information in a certain period of time through an LSTM model and the fused one-dimensional weather data; the one-dimensional meteorological data formed after conversion and fusion and the predicted marine meteorological information within a certain period of time are sent to the meteorological information storage module for storage;
and the weather information display module is used for displaying the real-time weather information, the forecast weather information and the predicted marine weather information within a certain period of time, which are sent by the weather information storage module.
As an implementation manner, the weather information processing module is configured to convert and fuse the raw data sent to the weather information processing module by the weather information storage module to form one-dimensional weather data, and specifically includes:
converting the two-dimensional data of the real-time weather information and the forecast weather information into one-dimensional data;
and fusing the real-time weather information converted into one-dimensional data and the forecast weather information to form one-dimensional weather data.
As one embodiment, the weather information processing module includes:
the information conversion sub-module is used for carrying out one-dimensional data conversion on the two-dimensional data of the real-time weather information and the forecast weather information, and converting the wind speed and the temperature measured by the ship end in the real-time weather information into corresponding heights in the forecast weather information;
the fusion and aggregation operator module is used for fusing the real-time weather information converted into one-dimensional data with the forecast weather information to form one-dimensional weather data; and predicting the marine weather information within a certain time by the LSTM model and the one-dimensional weather data.
As one implementation mode, the weather information receiving module is connected with shipborne weather equipment, a firewall, a GPS device, a VSAT satellite communication device and a liquid level telemetry system;
the on-board weather equipment is used for measuring the real-time weather information and sending the measured real-time weather information to the weather information receiving module;
the GPS device is used for receiving the ship positioning information and sending the ship positioning information to the meteorological information receiving module;
the VSAT satellite communication device is used for receiving the forecast weather information sent by the external ground weather station and sending the forecast weather information to the weather information receiving module;
the liquid level telemetry system is used for measuring the ship draft information and sending the ship draft information to the meteorological information receiving module.
As one embodiment, the real-time weather information includes time, longitude, latitude, draft, average wind speed, average wind direction, air temperature, relative humidity, air pressure, visibility;
the forecast meteorological information comprises wind speed, wind direction, air temperature, air pressure, rainfall, sea wave, ocean current and cloud coverage rate.
As one embodiment, the weather information receiving module includes:
the ship information receiving sub-module is used for receiving ship positioning information sent by the GPS device and ship draft information measured by the liquid level telemetry system;
the on-board weather information receiving sub-module is used for receiving real-time weather information measured by the on-board weather equipment and eliminating abnormal values exceeding the measuring range of the on-board weather equipment;
and the external weather information receiving sub-module is used for receiving forecast weather information sent to the VSAT satellite communication device by the external weather station sent by the VSAT satellite communication device.
As one embodiment, the on-board weather device is an on-board integrated weather receiver.
As one implementation mode, the information receiving module, the weather information storage module, the weather information processing module and the weather information display module are communicated through a unified information format.
As one implementation mode, the information receiving module, the weather information storage module, the weather information processing module and the weather information display module are communicated through Ethernet.
As one embodiment, the weather information display module generates and displays a two-dimensional weather map according to the received real-time weather information, the forecast weather information and the predicted marine weather information within a certain period of time.
As described above, the marine weather information prediction display system for ship navigation has the following beneficial effects:
according to the marine weather information prediction display system for ship navigation, the weather information receiving module, the weather information storage module, the weather information processing module and the weather information display module are arranged, after the original data from different data sources are converted and fused, the marine weather information of a certain period of time is predicted in real time through the LSTM model, the weather data of different sources are displayed through the weather information display module, and meanwhile the navigation safety of unmanned ships is effectively guaranteed.
Drawings
FIG. 1 is a schematic diagram showing the overall frame structure of an offshore weather information prediction display system for vessel navigation according to an embodiment of the present invention.
FIG. 2 is a schematic diagram showing a structure of a weather information processing module connected to an external device in an offshore weather information prediction display system for ship navigation according to an embodiment of the present invention.
Fig. 3 is a schematic diagram showing a specific structure of each module in the marine weather information prediction display system for ship navigation according to the embodiment of the present invention.
FIG. 4 is a schematic diagram showing a flow of the weather information processing module in the marine weather information prediction display system for ship navigation according to the embodiment of the invention.
FIG. 5 is a schematic diagram showing a data fusion in a weather information processing module in an offshore weather information prediction display system for vessel navigation according to an embodiment of the present invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
The importance of the weather environment to the navigation of the vessel is self-evident, and the weather information most interesting for experienced captchas typically includes wind speed, wave height, visibility, current and different weather phenomena. In order to ensure the sailing safety of the ship, the ship needs to pay close attention to the change of the weather environment in the sailing process, and the sailing plan is adjusted in time according to weather forecast information, currently, weather forecast information sent by a ground weather station at fixed time is usually referred to for weather information of a large area of sea, but in the sailing process, the marine weather environment is often more complex, so that the accuracy of the weather forecast information is greatly different from weather data in a sailing area.
In order to acquire information such as wind speed, wind direction, air temperature and the like in a navigation area where a ship is located in real time, ship weather monitoring equipment can be mounted on the ship. In order to adjust the sailing plan more timely, fusion and reference are needed between weather forecast information sent by a ground weather station and weather information measured by ship weather monitoring equipment, but the weather forecast information and real-time weather information cannot be fused due to the difference of time resolution and spatial resolution, and judgment is needed to be made by a crewman with experience.
For unmanned ships, weather forecast information sent by a ground weather station and weather information measured by ship weather monitoring equipment cannot be automatically fused, and weather environments of a certain time period cannot be predicted in real time, but correct prediction of the weather environments is a necessary condition for guaranteeing the operation safety of the ships, and is also a necessary condition for providing effective real-time weather environment references for shore-side ship operators.
In view of the above drawbacks, the present application provides an offshore weather information prediction display system for vessel voyage.
Please refer to fig. 1 to 5. It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings rather than the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
The embodiment provides an offshore weather information prediction display system for ship navigation, which comprises a weather information receiving module, a weather information storage module, a weather information processing module and a weather information display module, as shown in fig. 1. The weather information receiving module is used for receiving original data from different data sources, wherein the original data comprises real-time weather information, forecast weather information, ship positioning information and ship draft information; the meteorological information receiving module sends the received original data from different data sources to the meteorological information storage module, and the meteorological information storage module stores the original data; the method comprises the steps that a weather information storage module sends stored original data to a weather information processing module, the weather information processing module converts and fuses two-dimensional data in the original data to form one-dimensional weather data, the fused one-dimensional weather data is trained through an LSTM (long short time memory neural network) model, sea weather information in a certain period of time is predicted, meanwhile, the converted and fused one-dimensional weather data and sea weather information in a predicted certain period of time are sent to the weather information storage module, and the weather information storage module stores the one-dimensional weather data and the sea weather information in the predicted certain period of time; the weather information storage module sends the stored original data, the one-dimensional weather data and the predicted marine weather information within a certain period of time to the weather information display module, and the weather information display module displays the real-time weather information, the forecast weather information and the predicted marine weather information within a certain period of time.
According to the marine weather information prediction display system for ship navigation, provided by the embodiment, the weather receiving module, the weather information storage module, the weather information processing module and the weather information display module are arranged, so that the marine weather information in a certain period of time can be predicted in real time, weather data of different sources are displayed through the weather information display module, and meanwhile, the navigation safety of unmanned ships is effectively guaranteed.
In an alternative embodiment, as shown in FIG. 2, the weather information receiving module is connected with an on-board weather device, a firewall, a GPS device, a VSAT satellite communication device, and a liquid level telemetry system. The shipborne weather equipment is arranged on the ship and is used for measuring real-time weather information and sending the measured real-time weather information to the weather information receiving module; the firewall guarantees the communication safety between the weather information receiving module (or an offshore weather information prediction display system for ship navigation) and external equipment; the GPS device is arranged on the ship and used for receiving the ship positioning information and sending the ship positioning information to the meteorological information receiving module, and optionally, two GPS devices are arranged on the ship and are redundant; the VSAT satellite communication device is used for receiving forecast weather information sent by an external ground weather station and sending the forecast weather information to the weather information receiving module; the liquid level remote measuring system is used for measuring ship draft information and sending the ship draft information to the meteorological information receiving module.
In an alternative embodiment, as shown in fig. 3, the weather information receiving module includes a ship information receiving sub-module, a ship-borne weather information receiving sub-module and an external weather information receiving sub-module, where the ship information receiving sub-module is used for receiving ship positioning information sent by the GPS device and ship draft information measured by the liquid level telemetry system; the ship-borne weather information receiving sub-module is used for receiving real-time weather information measured by ship-borne weather equipment and eliminating abnormal values exceeding the measuring range of the ship-borne weather equipment; the external weather information receiving sub-module is used for receiving forecast weather information sent to the VSAT satellite communication device by the external ground weather station sent by the VSAT satellite communication device. Optionally, the on-board weather device is an on-board integrated weather receiver. Optionally, the information such as wind speed, wind direction, air temperature, air pressure, rainfall, sea wave, ocean current, cloud coverage rate and the like received by the ship-borne comprehensive weather receiver can be directly overlapped with the parameter value of the ship position in the generated weather map through the weather information display module, and the parameter value can be updated once per minute. Optionally, the real-time weather information measured by the ship-borne integrated weather receiver comprises time, longitude, latitude, draft, average wind speed, average wind direction, air temperature, relative humidity, air pressure and visibility; after receiving the real-time weather information, the ship-borne weather information receiving submodule analyzes the real-time weather information first, and sends the analyzed real-time weather information to the weather information storage module for storage, the weather information storage module stores the weather information according to the standard format of time, longitude, latitude, draft, average wind speed, average wind direction, air temperature, relative humidity, air pressure and visibility, a ship navigation weather data set is built along with a ship, meanwhile, the analyzed real-time weather information is sent to the weather information processing module for processing, and the data processed by the weather information processing module also need to be stored in the weather information storage module according to the standard format. Optionally, the forecast weather information sent by the external ground weather station and received by the VSAT satellite communication device includes wind speed, wind direction, air temperature, air pressure, rainfall rate, sea wave, ocean current and cloud coverage rate, the external weather information receiving sub-module analyzes the received forecast weather information, analyzes data such as measurement time, longitude, latitude, different weather parameters and the like, and sends the analyzed data to the weather information storage module for storage and sending to the weather information processing module for processing. Optionally, the ship information receiving submodule receives ship positioning information sent by two GPS devices at the ship end and ship draft information sent by the liquid level telemetry system, and sends the ship positioning information and the ship draft information to the meteorological information storage module and the meteorological information processing module. The data stored by the weather information storage module comprises original weather data information formed by forecast weather information, a ship sailing weather data set formed by the ship-borne comprehensive weather receiver, the GPS device and the liquid level telemetry system, and a processed weather data set formed after being processed by the weather information processing module.
In an alternative embodiment, as shown in FIG. 3, the weather information processing module includes an information conversion sub-module and a fusion calculation sub-module. The information conversion submodule needs to read the real-time weather information stored in the weather information storage module and convert the average wind speed and the air temperature into the height of corresponding data provided in the forecast weather information.
For example, the wind speed measured by the shipborne integrated weather receiver is the wind speed at the position with the distance from the sea level of 15m, the wind speed in the forecast weather information is the wind speed measured at the position with the distance from the sea level of 10m, at this time, the wind speed measured by the shipborne integrated weather receiver at the position with the distance from the sea level of 15m needs to be converted to obtain the wind speed at the position with the distance from the sea level of 10m, the weather parameters of the processing method are the wind speed and the air temperature measured by the shipborne integrated weather receiver, and for the wind speed, the conversion method is as shown in the formulas 1 and 2: u (U) 10 ＝k z U z (formula 1);wherein U is 10 For wind speed at 10m from sea level, U z For wind speed at any height from the sea surface, k z For wind speed altitude conversion system, z is the altitude from sea surface, z 0 As sea surface roughness parameter, z is higher than 7m/s 0 =0.022 m, otherwise, z 0 ＝0.0022m。
For the air temperature, for example, the air temperature provided by the forecast weather information is the temperature at the position 2m away from the sea surface, the air temperature measured by the ship-borne integrated weather receiver is the temperature measured at the position 15m away from the sea surface, and when the air temperature is converted, the air temperature measured by the ship-borne integrated weather receiver is converted to the air temperature at the position 2m away from the sea surface according to the air temperature direct reduction method, wherein the air temperature is reduced by 0.6 ℃ every 100m, and the air temperature measured by the ship-borne integrated weather receiver is converted as shown in the formula 3: t (T) h ＝T 0 -0.006 x Δh (formula 3); t (T) h T is the temperature on different height planes 0 At the temperature in the zero altitude plane, Δh is the altitude difference. Therefore, for converting the air temperature at 15m from the sea surface height into the air temperature at 2m from the sea surface height, the conversion formula is shown in formula 4: t (T) 2 ＝T 15 -0.006× (2-15) (equation 4). After both data conversions, the data needs to be stored in a one-dimensional standard format to facilitate subsequent data fusion. In addition, the information conversion sub-module also needs to convert the two-dimensional data provided by the forecast weather information into one-dimensional weather data, as shown in fig. 4, to convert the wind speed data of the forecast weather information, where the two-dimensional distance from the sea surface is 10m, into the standard format of the weather information storage module.
As also shown in fig. 3, the fusion operator module needs to perform certain fusion on the received forecast weather information and the real-time weather information, and the fused data is a precondition for performing subsequent weather information processing. The information conversion submodule already converts the forecast weather information and the real-time weather information (two types of data for short) into one-dimensional weather data, so that the two types of data can be directly fused according to time and longitude and latitude. For example, the time resolution of the received forecast weather information is 3 hours, the spatial resolution is 12.5 km, as shown in fig. 5, the forecast weather information is generally composed of a plurality of grids, the weather data in each grid is a uniform value, the data is planar, and the data is generally in a global scope; the ship-borne comprehensive weather receiver only measures the data in the ship navigation, so that the data are linear; when two kinds of data are fused, a plurality of data which are measured in real time by a ship-borne comprehensive weather receiver are often arranged in one grid, and at the moment, when the fusion is carried out according to a standard format, the fusion is preferably carried out by taking each grid as a unit, and the data in each grid are fused sequentially according to time.
The fused data is used for predicting meteorological data within a certain period of time by using a deep learning LSTM (long short term memory neural network) model, the data processed at the time is one-dimensional meteorological data fused in the earlier stage, and the time, longitude and latitude and parameters to be predicted are input according to the requirements of the model. As shown in fig. 4, after the information conversion submodule in the weather information processing module finishes data conversion, the data is first subjected to one-dimensional fusion in the fusion calculation submodule, and then the fused one-dimensional weather data is input into the LSTM model, so that predicted marine weather information in a certain period of time can be obtained. For example, if the local time of the ship is 13h, the ship receives weather information of the current day, which is only 0h, 6h, 12h and 18h, if weather information of 13h to 18h is wanted, the fusion calculation submodule can be used for carrying out parameter prediction, and the parameters predictable by the fusion calculation submodule include wind speed, air temperature and visibility; meanwhile, the predicted weather information is compared with the real-time weather information, if the predicted weather information is inconsistent with the real-time weather information, the real-time weather information is reprocessed every 10 minutes, and loop iteration is carried out, so that the accuracy of prediction is improved.
In an alternative embodiment, the weather information display module mainly converts predicted one-dimensional data into two-dimensional data and displays the two-dimensional data in a map form according to a specific time resolution. For example, if the weather information processing module obtains wind speed prediction data of 13h to 18h and sets the time resolution to 30min, the weather information display module generates a wind speed map every 30min time interval. In addition, the weather information display module displays real-time weather information measured by the shipborne comprehensive weather receiver in a numerical form, and the received forecast weather information sent by the external ground weather station is displayed in the original time resolution and spatial resolution and is displayed in a two-dimensional map form.
In an alternative embodiment, the information receiving module, the weather information processing module, the weather information storage module and the weather information display module are communicated through a unified information format, for example, the information receiving module, the weather information processing module, the weather information storage module and the weather information display module can be connected through an ethernet. In order to ensure the safety of the ship, a firewall is required to be arranged for the communication information between the ship and external equipment.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. An offshore weather information prediction display system for vessel voyage, comprising:
the system comprises a weather information receiving module, a data processing module and a data processing module, wherein the weather information receiving module is used for receiving original data from different data sources, and the original data comprise real-time weather information, forecast weather information, ship positioning information and ship draft information;
the weather information storage module is used for storing the original data sent by the weather information receiving module;
the weather information processing module is used for converting and fusing the original data sent to the weather information processing module by the weather information storage module to form one-dimensional weather data, and predicting marine weather information in a certain period of time by the LSTM model and the fused one-dimensional weather data; and transmitting the one-dimensional meteorological data formed after conversion and fusion and the predicted marine meteorological information within a certain period of time to the meteorological information storage module for storage
Storing;
and the weather information display module is used for displaying the real-time weather information, the forecast weather information and the predicted marine weather information within a certain period of time, which are sent by the weather information storage module.
2. The marine weather information prediction display system for vessel voyage of claim 1, wherein the weather information processing module is configured to convert and fuse the raw data sent from the weather information storage module to the weather information processing module to form one-dimensional weather data, and specifically comprises:
converting the two-dimensional data of the real-time weather information and the forecast weather information into one-dimensional data;
and fusing the real-time weather information converted into one-dimensional data and the forecast weather information to form one-dimensional weather data.
3. The marine weather information prediction display system for vessel voyage according to claim 1 or 2, wherein the weather information processing module comprises:
the information conversion sub-module is used for carrying out one-dimensional data conversion on the two-dimensional data of the real-time weather information and the forecast weather information, and converting the wind speed and the temperature measured by the ship end in the real-time weather information into corresponding heights in the forecast weather information;
the fusion and aggregation operator module is used for fusing the real-time weather information converted into one-dimensional data with the forecast weather information to form one-dimensional weather data; and predicting the marine weather information within a certain time by the LSTM model and the one-dimensional weather data.
4. The marine weather information prediction display system for vessel voyage of claim 1, wherein the weather information receiving module is connected with on-board weather equipment, a firewall, a GPS device, a VSAT satellite communication device, a liquid level telemetry system;
the on-board weather equipment is used for measuring the real-time weather information;
the GPS device is used for receiving the ship positioning information;
the VSAT satellite communication device is used for receiving the forecast weather information sent by the external ground weather station;
the liquid level telemetry system is for measuring the vessel draft information.
5. The marine weather information prediction display system for vessel voyage of claim 1 or 4, wherein the real-time weather information comprises time, longitude, latitude, draft, average wind speed, average wind direction, air temperature, relative humidity, air pressure, visibility;
the forecast meteorological information comprises wind speed, wind direction, air temperature, air pressure, rainfall, sea wave, ocean current and cloud coverage rate.
6. The marine weather information prediction display system for vessel voyage of claim 4, wherein the weather information receiving module comprises:
the ship information receiving sub-module is used for receiving ship positioning information sent by the GPS device and ship draft information measured by the liquid level telemetry system;
the on-board weather information receiving sub-module is used for receiving real-time weather information measured by the on-board weather equipment and eliminating abnormal values exceeding the measuring range of the on-board weather equipment;
and the external weather information receiving sub-module is used for receiving forecast weather information sent by an external weather station sent by the VSAT satellite communication device.
7. The marine weather information forecast display system for vessel voyage of claim 4 or 6, wherein the on-board weather equipment is an on-board integrated weather receiver.
8. The marine weather information prediction display system for vessel voyage of claim 1, wherein the information receiving module, the weather information storage module, the weather information processing module and the weather information display module communicate with each other in a unified information format.
9. The marine weather information prediction display system for vessel voyage of claim 8, wherein the information receiving module, the weather information storage module, the weather information processing module and the weather information display module are in communication with each other through an ethernet.
10. The marine weather information forecast display system for vessel voyage of claim 1, wherein the weather information display module generates and displays as a two-dimensional weather map based on the received real-time weather information, the forecast weather information, and the forecast weather information over a period of time.
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