KR20230023844A - Method For Predicting And Avoiding Ship Collision Possibility Using Digital Twin - Google Patents

Abstract

The present invention relates to a method for predicting and avoiding a ship collision possibility using a digital twin, which are able to perform a simulation of a three-dimensional shape image of a ship to correspond to the current position and posture of the ship by using the ship's GPS information, posture information, shape information, and electronic sea map information in real time when another ship approaches the ship for the safe navigation when the ship navigates, synthesize and display an optimized moving path on the electric sea map, and allow a user to check the ship and the situation around the ship with bare eyes and to rapidly and precisely perform the safe navigation at a position with a collision possibility when the ship navigates.

Description

Method For Predicting And Avoiding Ship Collision Possibility Using Digital Twin

The present invention relates to a method for predicting and avoiding the possibility of collision between ships using a digital twin, and in particular, to a method for predicting, warning and avoiding the possibility of collision between ships, and more specifically, to a communication network such as an automatic ship identification system, RF (Radio Frequency), GPS, etc. It identifies the location using digital twin and simulates the position, attitude, structure and movement path of the ship to predict mutual collision between ships, provides an alarm notification service, and can navigate in a safe route to avoid collision. It relates to a method for predicting and avoiding the possibility of ship collision using a digital twin that provides an avoidance method that guides to do so.

Digital twin refers to a technology for obtaining accurate information about the characteristics of real assets by creating twins of objects in reality on a computer and simulating situations that may occur in reality with a computer.

Since it is possible to know various conditions of real assets, productivity, operation scenarios, etc., efficiency can be improved throughout production and service in various industries, so it is attracting attention recently.

A digital twin is similar to a digital mockup in that a copy is created.

However, unlike a mock-up, which becomes obsolete at the point when a product design is complete and production and sales are carried out, a digital twin is maintained even after the product is completed, and the big difference is that it can provide the collected status data to the product user. have

Due to the advantages of the digital twin, various processes and related technologies using the digital twin are being developed throughout the industry. However, research on the digital twin is still at the initial idea stage, and technology development or application for actual application to the industry is insufficient.

In addition, positioning between ships is generally performed using radar. A ship radiates radio waves to the surroundings and receives radio waves reflected from the surroundings to detect nearby objects.

To this end, a radar reflector is installed in each ship to clearly show its position on the radar to the other ship.

However, since the positioning of a ship using radar simply informs only the position of the ship, it is impossible to grasp the operation information of the other ship or the structure of the ship at all. Therefore, it is inconvenient for the user to continuously observe the location information displayed on the radar and directly determine the possibility of collision.

In addition, in general, when a ship enters and departs from a port, docks at a pier, passes through a lock gate, or navigates through a narrow channel, the surrounding sea area conditions and port structures, terrain features, and sea area obstacles It is necessary to understand the environment, but there was a problem that it was not easy to grasp the environment around the ship in a complex way.

As a related prior art, Korean Patent Publication No. 10-2021-0001308 (2021.01.06) discloses a collision avoidance device for ships.

Ship collision prevention device in the prior literature is installed on the ship, imaging unit for imaging the front, side and rear of the ship, collision prediction unit and collision prediction unit for predicting the collision of the ship using the image obtained from the imaging unit of the It is characterized in that it includes a display unit for displaying the judgment result.

Such a conventional anti-collision device for ships is not very helpful for safe navigation only with the navigation information collected through the imaging unit in the ship itself and the information of nearby ships, and can identify only the location information and distance information of the ship, but the entire ship It is difficult to accurately and quickly identify the structure of the ship, and it is not easy to accurately predict and avoid the collision possibility of ships.

Republic of Korea Patent Publication No. 10-2021-0001308 (2021.01.06)

The present invention has been made in consideration of the above situation, and an object of the present invention is to provide GPS information and attitude information of a ship in real time for safe navigation regardless of the size of the ship during the operation and arrival and departure of the ship, and By using the electronic chart information, the 3D shape image of the ship is synthesized and displayed on the electronic chart to correspond to the current position and attitude of the ship, so that the ship and the situation around the ship are visually checked to obtain the movement information of the ships. The purpose is to predict the possibility of ship collision by acquiring and outputting it in advance to determine the possibility of ship collision, and to provide a method for predicting and avoiding the possibility of ship collision using a digital twin that guides a safe navigation path that can be performed quickly and accurately during ship operation to be

A ship collision possibility prediction and avoidance method using a digital twin according to the present invention includes a ship identification step of identifying the ship by receiving ship information of the corresponding ship when at least one other ship in close proximity is detected from the own ship in operation; an attitude calculation step of calculating the attitude of the ship according to the location identified in the ship identification step and the movement path; an image generation step of generating an image by receiving information on the shape and structure of the ship calculated in the posture calculation step from the digital twin server and shaping it into a 3D image; A simulation and collision possibility prediction step of receiving the operation information of the own ship and other ships and predicting the possibility of collision of the ship by performing a simulation; An electronic chart output step of synthesizing the simulation result into a 3D image on the electronic chart and then outputting the result; and guiding a movement route for safe navigation based on the information output through the electronic chart outputting step.

Preferably, the step of simulating and predicting the possibility of collision is characterized in that real-time environmental external force information around the ship is received from an environmental external force information server and the simulation is performed.

More preferably, the simulation and collision probability prediction step is characterized in that the simulation proceeds at regular intervals and proceeds in real time when at least one other vessel located within the second area is detected from the own ship in operation.

Also preferably, the simulation and collision probability prediction step sets the first area and the second area for the own ship, calculates the relative distance between the own ship and other ships and the relative speed between the own ship and other ships, It is characterized in that whether or not a collision between the own ship and another ship is predicted using the relative distance and relative speed information.

Also preferably, the step of guiding the movement route may include transmitting a voice guidance or warning signal through a notification means when the movement route is deviated from the movement route during the movement route guidance, when the operation is delayed, or when there is a possibility of collision with the ship. characterized by

According to the present invention, when operating a ship using a digital twin, a 3D shape image of the ship is generated by using GPS information, attitude information, shape information of the ship, and electronic chart information of the ship in real time for safe navigation regardless of the size of the ship. After simulation to correspond to the current position and attitude of the ship, the optimized movement path is synthesized and displayed on the electronic chart, thereby visually checking the ship and the situation around the ship to predict the possibility of ship collision and to avoid it safely. It has the effect of preventing marine accidents by allowing measures for navigation to be taken.

In addition, it has an effect of preventing a collision accident between ships by detecting a separation distance between ships navigating in the sea and determining whether to secure a safe distance and notifying the navigator or controller of the separation distance.

In addition, when a risk of collision between ships navigating in the sea is detected, it has the effect of ensuring the safe navigation of ships by providing information necessary for avoidance between ships in a timely manner so that they can be safely avoided.

In addition, by overlaying and displaying the navigation information selectively extracted from the electronic chart on the video around the ship using the digital twin, realistic navigation information can be provided, and it is possible to enter and depart from a port, dock at a pier, or pass through a lock. Even when navigating in narrow waterways, etc., it is possible to predict the possibility of vessel collision and provide avoidance methods to ensure safe navigation of the vessel by considering the surrounding sea conditions and the environment around the vessel, such as port structures, geographical features, and obstacles in the sea area. have a possible effect.

1 is a diagram schematically showing a ship collision probability prediction system using a digital twin according to an embodiment of the present invention.
2 is a conceptual diagram illustrating a method for predicting and avoiding a possibility of ship collision using a digital twin according to an embodiment of the present invention.
3 is a flowchart illustrating a method of predicting and avoiding a possibility of ship collision using a digital twin according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

The advantages and features of the present invention, and how to achieve them, will become clear with reference to the detailed description of the following embodiments in conjunction with the accompanying drawings.

However, the present invention is not limited by the embodiments disclosed below, but will be implemented in a variety of different forms, only the present embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims.

In addition, when it is determined that related known technologies may obscure the gist of the present invention in describing the present invention, a detailed description thereof will be omitted.

1 is a diagram schematically showing a ship collision probability prediction system using a digital twin according to an embodiment of the present invention, and FIG. 3 is a conceptual diagram showing a ship collision probability prediction and avoidance method using a digital twin according to an embodiment of the present invention. 3 is a flowchart showing a method for predicting and avoiding a ship collision possibility using a digital twin according to an embodiment of the present invention.

First, the digital twin used in the present invention is a digital object that replicates objects and environments in the real world in virtual space, and means that not only shapes but also movements and characteristics in the real world are expressed identically through data. .

Therefore, by using the digital twin, it is possible to predict the future in virtual reality by digitizing a digital model and an actual product driven by the same physical law (six-figure motion) as a ship.

1 is a diagram schematically showing a ship collision probability prediction system using a digital twin according to an embodiment of the present invention.

First, it is assumed that broadband communication is provided from the coast to a certain distance in an environment where a control system for safe navigation of a ship is applied.

Referring to FIG. 1, the ship collision probability prediction system using a digital twin according to an embodiment of the present invention includes at least one ship 100 in operation, a user terminal 110 provided in the ship, and a ship operation control system 200 ) and the digital twin server 310 that stores the shape and structure data of the ship, the ship operation information management server 320 that stores the ship's average movement speed, movement direction, destination, and ship operation information, and real-time weather information is updated and managed It includes an environmental external force information server 330 and a chart management server 340 in which electronic charts are updated and managed.

In addition, the user terminal includes a display device and may be a mobile communication terminal capable of wired/wireless communication, a laptop computer, a personal computer, etc., and may be an ECDIS (Electronic Chart Display and Information System) mounted on a ship. there is.

The ship operation control system 200 transmits and receives information with the user terminal 110 provided in the ship 100, and transmits and receives safe navigation information of the ship through this.

In addition, the ship operation control system 200 transmits and receives information with the digital twin server 310, the ship operation information management server 320, the external force information 330, and the chart management server 340.

In addition, the ship operation control system 200 includes a ship information management unit 210, an image processing unit 220, a simulation unit 230, an electronic chart generator 240, a communication unit 250, and a ship operation information storage unit 260. includes

The vessel information management unit 210 manages vessel information of each vessel, for example, the name of the vessel, the unique number of the vessel, the current location of the vessel, and the movement path of the vessel.

First, the vessel under safe navigation control through the vessel control system is referred to as a 'own vessel', and other vessels located around the own vessel are referred to as 'other vessels'.

Here, the ship information management unit 210 may register ship information in advance or collect and manage ship information in real time from the ship.

The ship information management unit 210 collects information on other ships corresponding to the own boat as a standard at sea and the surrounding ships around the own boat, and provides the collected results to the own boat after simulation, so that the own boat can be used as a neighboring vessel. You can check the movement status of the ship in real time, and it is possible to check the optimal movement route of the ship.

The image processing unit 220 receives the shape and structure of the corresponding vessel from the digital twin server 310 through the vessel information identified by the vessel information management unit 210 and forms and creates a 3D image.

By this, the position of the ship according to the position of the ship and the movement route according to the GPS is shaped into a 3D image, and the size of the ship and the structure of the ship according to the shape of the ship are accurately expressed, and the movement route and anchoring position according to the corresponding ship be able to set.

The simulation unit 230 receives the image of the ship shaped as a 3D image from the digital twin server 310, and the ship's operation, such as the average moving speed, moving direction, destination, etc. of the ship received from the navigation information management server 320 receive information;

Real-time meteorological information from the environmental external force information 330 and electronic charts from the chart management server 340 are received, and simulation of the own vessel and other nearby vessels is performed.

An optimized movement path according to the characteristic size, shape, structure, and average movement speed of each ship is derived.

The electronic chart generation unit 240 may generate an electronic chart by receiving the optimized movement path derived from the simulation unit from the chart management server and combining the 3D shape image of the ship with the electronic chart.

In addition, the position and 3D shape image of the surrounding ships close to the path can be generated so that the movement of the corresponding ship can be output.

As a result, another ship is displayed in a 3D shape on the movement path of the corresponding ship, and the risk of collision between the ships can be prevented.

The communication unit 250 can transmit and receive information with the user terminals 110 of a plurality of ships through wireless communication, and the digital twin server 310, ship operation information management server 320, weather information server 330, and chart management Information may be transmitted and received through wireless communication with the server 330 .

The vessel operation information storage unit 260 guides the standard vessel to be operated according to an optimized movement path so that the reference vessel can be safely operated from port entry to departure, and when the ship deviate from the movement route or the operation is delayed or the ship is likely to collide. In this case, a voice guidance or warning signal can be transmitted through the notification means, and when the ship operation control unit and the ship operation control are completed, the corresponding control information is stored and transmitted to the ship operation information management server 320. It can be divided into a storage unit.

In addition, the control data of the information storage unit may be transmitted to and managed by the ship operation management server.

As shown in FIG. 2, the ship collision prediction and avoidance method according to a preferred embodiment applicable to the present invention includes a first area A1, which is a danger area, and a second area A2, which is a caution area in which real-time simulation is performed. can be distinguished.

When the simulation is in progress, the first area is set as the first area (A1) within the danger distance based on the own ship, and the caution area within the caution distance based on the own ship is set as the second area (A2), If another ship enters the area A2 and the movement path to the first area A1 is predicted, it can be predicted and determined that there is a possibility of collision.

When another ship enters the second area (A2), it is characterized in that a simulation is performed using a digital twin in real time to predict the possibility of collision and provide guidance on how to avoid it.

If another ship is located outside the second area (A2), it is determined that the ship is outside the caution area and the digital twin simulation is not performed, so the satellite communication cost for conducting the digital twin simulation can be reduced.

In the first area A1 and the second area A2, areas within the danger distance and the caution distance are set as the first area A and the second area B, respectively, based on the own ship in the simulation unit.

In addition, it is possible to predict the collision between ships by calculating the calculated position of own ship and other ships and the relative speed between own ship and other ships, and simulating the shape of own ship and other ships.

In addition, it is possible to predict a collision between ships by comparing direction information on the relative distance and relative speed between the own ship and another ship.

In the present invention, the first area (A) refers to an area with a substantially higher risk of collision, and the second area (B) does not have a higher risk of collision than the first area (A), but operates on the current movement route. Indicates an area where there is a risk of collision in the future and requires attention.

Therefore, as shown in FIG. 2 , the first area A is set to be included in the second area B. That is, the danger distance for each ship is set smaller than the caution distance.

At this time, the danger distance and the caution distance for each vessel may be set in advance by a manager or the like, and the values may be set differently according to the state information (size, operational speed) of the vessel.

Specifically, since each ship has a different size, operating speed, etc., the first area (A1, danger area) and the second area (A2, caution area) for each vessel may be set differently based on the above information. can

To this end, the ship collision probability prediction system according to the present invention receives status information (identification information about the ship including flight number, destination, speed, etc.) and ship operation information for each ship from each ship and conducts a simulation. Thus, it is possible to predict the possibility of collision of ships and to propose an avoidance method.

Ships are means of transportation that move on the sea, and location information of the corresponding ship may be composed of GPS information. In the ship operation control system 200, the first area and the second area for the own boat are set, and the relative distance/speed is calculated to calculate the relative distance between the own boat and other ships and the relative speed between the own boat and other ships. And, using the relative distance and relative speed information, it is possible to predict whether or not a collision between the own ship and another ship occurs.

Therefore, in the method for predicting and avoiding ship collision using digital twin, the simulation can be performed at regular intervals during the simulation, and when the position of at least one other vessel is measured in the second area, the simulation is performed in real time, As a standard, when another ship is located on a future movement route within the first area (A1), it is characterized in that the ship's safe navigation is guided by mutually outputting the location of the other ship to the own ship and other ships in real time.

The vessel information management unit 210 may receive input of information of the vessel under voyage and information of other vessels approaching from the vicinity of the vessel through V-PASS, which is a vessel automatic identification device, and Automatic Identification System (AIS).

The information received is the dynamic information of the ship including the ship's position, the ship's speed (SOG: Speed Over Ground) and the ship's course (COG: Course Over Ground), and the ship's type (Ship's Type) , static information of the ship including LOA (Length Over All), and the like.

In addition, by reflecting real-time environmental external force information in addition to ship information, it is possible to more accurately predict the possibility of ship collision.

In addition, according to the method for predicting and avoiding vessel collision according to the present invention, the second area A2 may be set as a plurality of second areas A2 according to an embodiment.

For example, the second area A2 is divided into areas 2-1, area 2-2, etc., and ships around a specific vessel are classified into area 2-1, area 2-2, etc. It is possible to determine the possibility of collision at each moment by determining whether it is approaching.

In this way, the ship collision possibility prediction and avoidance method according to the present invention sets two or more divided areas (first area and second area) based on the own boat, and the relative distance and relative speed between the own boat and other ships It is characterized in that the possibility of collision is determined according to whether the other vessel will pass through the first area of the own ship by calculating the information.

For this reason, the method for predicting and avoiding the possibility of collision between ships using the digital twin according to the present invention is characterized in that it can predict the collision between ships with higher reliability than the prior art by determining the possibility of collision between ships from various angles.

3 is a flowchart showing a method of predicting and avoiding a possibility of ship collision using a digital twin.

Referring to FIG. 3, in the method for predicting and avoiding ship collision possibility using a digital twin, ship information is received about at least one nearby ship located in a second area from a ship in operation to identify the ship (S100).

The position of the identified vessel and the posture of the vessel according to the movement path are calculated (S200).

In order to generate a 3D shaped image of the ship identified by the image processor 220, information is received from the digital twin server 310 to generate a 3D shaped image (S300).

Here, if there is a previously created 3D shaped image in the digital twin server 310, it can be loaded, and if there is no previously created 3D shaped image, it can be newly created and stored.

The simulation unit 230 receives the image of the ship shaped as a 3D image from the digital twin server 310, and from the ship operation information management server 320, the average movement speed of the ship in operation, movement direction, destination, and port entry of the ship / Receives ship operation information such as departure time, receives real-time weather information from the environmental external force information server 330 and electronic chart from the chart management server 340, The ship is simulated (S400).

The electronic chart generation unit 240 receives the optimized movement path of each ship derived from the simulation progress result in the simulation unit 230 from the chart management server 340, and synthesizes the 3D shape image of the ship to the electronic chart. is generated (S500).

The communication unit 250 transmits the generated electronic chart and the optimized movement path to the user terminal so that they can be output (S600).

At this time, when the information is transmitted to a plurality of ships, the reference ship (own ship) is displayed based on the received terminal, and the other ships are displayed as neighboring ships (other ships), so that each received terminal is displayed in a plurality of user terminals. Based on the equipped ship, it can be displayed as an own boat.

That is, if there are terminals A, B, and C, when terminal A receives information, A becomes the own ship, B and C become other ships, and when terminal B receives information, terminal B becomes the own ship, , A and C become other ships, and when terminal C receives information, terminal C becomes its own ship, and A and B can become other ships.

In the ship operation information storage unit 260, the ship is operated according to the movement route optimized for the corresponding ship, and guides the ship to safely navigate from arrival to departure to the destination. When this occurs, a voice guidance or warning signal is transmitted through a notification means (S700).

When the operation control of the ship is terminated, the corresponding vessel operation information is stored and transmitted to the operation information management server 320 (S800).

Accordingly, according to the present invention, when another vessel is detected in a caution area where there is a possibility of vessel collision for safe navigation regardless of the size of the vessel during operation of the vessel, the GPS information and attitude information of the vessel and the shape of the vessel are detected in real time. After simulating the 3D shape image of the ship to correspond to the current position and posture of the ship using information and electronic chart information, the optimized movement path is synthesized and displayed on the electronic chart to visually check the ship and the situation around the ship. Therefore, it has the effect of enabling the entry and departure of the ship or the operation of the ship to be performed quickly and accurately at a low cost.

In addition, marine accidents can be prevented by recognizing the maritime traffic characteristics of the passage before the ship enters the port so that measures for safe navigation can be taken, and the stability of entry and departure and operation can be remarkably improved through the entry and departure and operation control of the ship. have an enhancing effect.

So far, specific embodiments of a method for predicting and avoiding ship collision using a digital twin according to the present invention have been described, but it is obvious that various modifications are possible within the limits that do not deviate from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments and should not be conveyed, and should be defined by not only the claims to be described later, but also those equivalent to these claims.

That is, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and All changes or modified forms derived from the equivalent concept should be construed as being included in the scope of the present invention.

100: ship
110: user terminal
200: ship operation control system
210: Ship information management department
220: image processing unit
230: simulation unit
240: electronic chart generation unit
250: communication department
260: ship operation information storage unit
300: server unit
310: digital twin server
320: Ship operation information management server
330: environmental external force information management server
340: chart management server
A1: First area (risk area)
A2: Second area (attention area)

Claims (5)

A ship identification step of identifying a ship by receiving ship information of the corresponding ship when at least one other ship in close proximity is detected from the own ship in operation;
a posture calculation step of calculating a posture of the vessel according to the position identified in the vessel identification step and the movement path;
an image generation step of generating an image by receiving information on the shape and structure of the ship calculated in the posture calculation step from the digital twin server and shaping it into a 3D image;
A simulation and collision possibility prediction step of receiving the operation information of the own ship and other ships and predicting the possibility of collision of the ship by performing a simulation;
An electronic chart output step of synthesizing the simulation result into a 3D image on the electronic chart and then outputting the result; and
A method for predicting and avoiding a possibility of ship collision using a digital twin, comprising the step of guiding a movement route for safe navigation based on the information output through the electronic chart output step.
The method of claim 1,
The simulation and collision probability prediction step,
A method for predicting and avoiding a possibility of a ship collision using a digital twin, characterized in that real-time environmental external force information around the ship is received from an environmental external force information server and simulation is performed.
The method of claim 1,
The simulation and collision probability prediction step,
A method for predicting and avoiding a ship collision possibility using a digital twin, characterized in that the simulation is conducted at regular intervals and proceeds in real time when at least one other vessel located in the second area is detected from the ship in operation.
The method of claim 1,
The simulation and collision probability prediction step sets a first area and a second area for the own ship,
Calculate the relative distance between the own ship and other ships and the relative speed between the own ship and other ships, and use the relative distance and relative speed information to predict whether or not there will be a collision between the own ship and other ships using a digital twin Prediction and avoidance method of ship collision possibility.
The method of claim 1,
In the step of guiding the movement path,
Prediction and avoidance of ship collision possibility using digital twin, characterized in that voice guidance or warning signal is transmitted through a notification means when the ship deviates from the movement route during movement route guidance, when navigation is delayed, or when there is a possibility of collision between ships method.

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