JP2010092245A - Safety navigation network system for vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct a safety navigation network system for a vessel which is inexpensive, freely accessible and possible to be mounted on all the vessels including a small boat by reducing the total amount of communication traffic for the navigation information and also further simplifying configuration of an apparatus to be mounted on the vessel. <P>SOLUTION: In the safety navigation network system for the vessel, the information for the vessel is distributed by broadcast from a server 4. Calculation of the vessel moving information is executed by the server 4. Acquisition of the position information of the vessel is executed by GPS. The information processing system mounted on the vessel is equipped with an alarming device for detecting other vessels coming abnormally close with possibility of collision, and issuing the alarm. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a ship safety navigation network system.

  In order to prevent the collision of ships, it is important to know information about the ships around the ship that navigates the sea, especially the position information of the ships and information related to the movement of the ships such as the moving speed and direction of travel. It is important to know ship navigation information.

  In recent years, a system called AIS (automatic ship identification device) using wireless communication in the VHF band and a system for exchanging ship navigation information between ships and the land are also used. However, AIS is only required to be installed on ships with a capacity of 500 tons or more on domestic routes and ships with a weight of 300 tons or more on international routes, and is a system limited to large vessels. Furthermore, since AIS uses a closed network, transmission / reception of the information is limited between specific ships. In addition, since an expensive dedicated system is required, it is not popular for general ships, particularly small ships.

  Patent Document 1 discloses a system that acquires ship information of AIS-equipped ships and non-AIS-equipped ships and displays navigation information of other ships using the Internet or a mobile phone.

JP 2006-163765 A

  In the invention of Patent Document 1, it is necessary for the system to receive the ship information of the AIS-equipped ship and the non-AIS-equipped ship, and to connect to a plurality of devices mounted on the ship in order to obtain ship information. The configuration becomes complicated, such as the need to do. Moreover, the apparatus installed in each ship also becomes complicated and expensive. Further, in a symmetric network in which information needs to be individually transmitted for each ship, as in the system disclosed in Patent Document 1, the communication amount from the server to all ships is n at the maximum when the number of ships is n. This increases in proportion to the square of, and the increase in the number of ships is a big problem.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to construct a ship safety navigation network system that has a small amount of communication, has a simple configuration of an apparatus mounted on a ship, and can be mounted on a small ship. And

  In order to achieve the above object, a ship safety navigation network system according to the present invention includes an information processing system installed in each of a plurality of ships, a broadcasting station that transmits information, and the broadcasting station connected via the Internet, An information processing system and a server connected via the Internet and wireless communication, each of the information processing systems acquires position information of the ship on which the information processing system is installed, and the acquired ship Position information, time information indicating the time when the ship position information is acquired, and ship identification information are transmitted to the server via the Internet and the wireless communication, and the server transmits the Internet and the wireless communication. The position information of the ship, the time information, and the identification information of the ship transmitted from each information processing system via Based on the received and received information, the moving speed and the traveling direction of the ship in which the information processing system of the transmission source is installed are calculated, the moving information indicating the calculated moving speed and the traveling direction, and the position of the ship Information and the ship identification information are transmitted to the broadcast station via the Internet, the broadcast station broadcasts information received from the server, and the information processing system receives broadcast from the broadcast station. And receive information is output.

  Preferably, the information processing system includes means for transmitting the position information of the ship, the time information, and the identification information of the ship through the wireless communication, and the network for realizing the wireless communication is the information processing system. A base station that receives a radio signal from the base station and transmits the position information of the ship, the time information, and the identification information of the ship included in the received radio signal to the server, and the information processing system includes: The maximum distance at which a broadcast from the broadcast station can be received is greater than the maximum distance at which the information processing system and the base station can communicate.

  Preferably, the ship safe navigation network system further includes image display means installed in the ship, and the image display means is based on the position information and the movement information of the ship received by the information processing system, The image which shows the position of the own ship and the other ship which exists around the said ship, the advancing direction, and a moving speed is displayed.

  Preferably, the ship safe navigation network system further includes warning means installed on the ship, and the warning means is based on the ship position information and the movement information received by the information receiving means. It is detected whether or not another ship enters within a predetermined range, and an alarm is issued when it is detected that the other ship enters.

  Preferably, the information processing system acquires the position information of the ship by a satellite positioning system.

  Preferably, the broadcasting station broadcasts the ship position information, the movement information, and the ship identification information by digital terrestrial broadcasting, and the information processing system receives the information broadcast from the broadcasting station. A terrestrial digital broadcast receiver that outputs information received by the terrestrial digital broadcast receiver.

  Preferably, the server transmits the position information of the obstacle at sea and the identification information of the obstacle together with the movement information, the position information of the ship and the identification information of the ship to the broadcasting station.

  Preferably, the network for realizing the wireless communication is a mobile phone communication network, a wireless LAN, or a WiMAX network.

  Preferably, the information receiving means and the information transmitting means installed on the same ship are configured by a single device.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to suppress the communication volume of the whole navigation information, and to simplify the structure of the apparatus mounted in a ship. Accordingly, it is possible to construct a ship safe navigation network system that can be mounted on a small ship or the like.

  Hereinafter, a ship safe navigation network system according to an embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the ship safety navigation network system according to the present embodiment includes an information processing system 21 (see FIG. 2 described later) mounted on the ships 1A, 1B, 1C, 1D, and mobile phone base stations 2A, 2B. , Server 4 and digital terrestrial broadcasting station 15.

  The server 4 and the terrestrial digital broadcasting station 15 are connected via the Internet 3. The server 4 and the information processing system 21 mounted on the ships 1A, 1B, 1C, 1D are connected via the Internet 3 and the wireless communication 30 via the mobile phone base stations 2A, 2B (in detail). The server 4 and the mobile phone base stations 2A, 2B are connected via the Internet 3, and the information processing system 21 and the mobile phone base stations 2A, 2B mounted on the ships 1A, 1B, 1C, 1D are wireless Connected via communication 30). The wireless communication 30 is realized by a mobile phone communication network, a wireless LAN, or a WiMAX network.

  The mobile phone base stations 2A and 2B, the server 4, and the terrestrial digital broadcasting station 15 are installed on land, and the ships 1A, 1B, 1C, and 1D can receive radio waves emitted by the terrestrial digital broadcasting station 15. At the same time, it is a ship that navigates a water area that can be connected to the mobile phone base stations 2A and 2B through the wireless communication 30.

  In the present embodiment, for ease of understanding, four ships, two mobile phone base stations, and one terrestrial digital broadcasting station are described, but the number is not limited.

  More specifically, the information processing system 21 mounted on the ships 1A, 1B, 1C, and 1D uses GPS (Global Positioning System) to acquire position information of the current position and time information of the current time at regular intervals. . The information processing system 21 adds the ship ID as the identification information of the ship where the ship is installed to the acquired position information and time information, and the Internet via the mobile phone base stations 2A and 2B from the mobile phone terminal. 3 to the server 4 connected to 3.

  The server 4 receives the information transmitted via the mobile phone base stations 2A and 2B, accumulates the ship ID as a key, and moves each ship 1A, 1B, 1C, 1D based on the accumulated information. Movement information indicating the speed and direction of travel is obtained and stored in association with the received information.

  The server 4 periodically transmits navigation information including ship ID, position information, and movement information to the terrestrial digital broadcasting station 15.

  The terrestrial digital broadcasting station 15 transmits navigation information to the information processing system 21 of the ships 1A, 1B, 1C, 1D by terrestrial digital broadcasting. The transmission power of the terrestrial digital broadcasting station 15 is sufficiently larger (10 times or more) than the transmission power of the information processing system 21 installed in the ships 1A, 1B, 1C, 1D, and includes a plurality of mobile phone base stations 2A, 2B. Navigation information can be transmitted over a wide range.

  The information processing system 21 mounted on the ships 1A, 1B, 1C, 1D receives the navigation information broadcast by the digital terrestrial broadcasting station 15, processes the received information, and displays the position and moving speed of the ship on the display screen. Displays the traveling direction, the position and moving speed of the surrounding ship, and the traveling direction.

  Next, the configuration of the information processing system 21 and the server 4 mounted on the ships 1A, 1B, 1C, 1D will be specifically described with reference to FIGS.

  As shown in FIG. 2, the information processing system 21 mounted on the ships 1A, 1B, 1C, 1D communicates with the GPS 8, the computer 9, and the mobile phone base stations 2A, 2B for acquiring their own location information. Mobile phone terminal 10, alarm device 11 that issues a warning by sound or light, and terrestrial digital broadcast receiver 16 that receives navigation information from terrestrial digital broadcast station 15.

  The computer 9 includes a control unit 18, a storage device 19, a display device 20, and an interface 17.

  The interface 17 is connected to the GPS 8, the terrestrial digital broadcast receiver 16, the mobile phone terminal 10, and the alarm device 11, and enables data transmission / reception with the control unit 18.

  The storage device 19 includes a ROM, a RAM, a flash memory, a hard disk device, and the like. The storage device 19 stores a program executed by the control unit 18, data, and the like and functions as a work area for the control unit 18.

  The display device 20 is composed of a liquid crystal display device or the like, and displays an arbitrary image.

  The control unit 18 executes a program stored in the storage device 19 and controls the operation of the information processing system 21 as a whole. Specifically, the control unit 18 i) periodically acquires its current position from the GPS 8 and transmits it to the server 4 via the interface 17 and the mobile phone terminal 10, and ii) a terrestrial digital broadcasting station 15 is received through the digital terrestrial broadcasting receiver 16 and the interface 17, and iii) based on the received navigation information, forming a symbol indicating the moving speed and traveling direction of the own ship and the nearby ship. Display on the display device 20, and iv) determine whether or not another ship may enter the planned navigation area of the ship, and issue a warning from the warning device 11 if there is a possibility.

  Details of the operation of the control unit 18 will be described later with reference to a flowchart.

  As shown in FIG. 3, the server 4 includes a control unit 6 that executes a program, a ship ID of each ship, a storage device 7 that stores ship position information, and time information, and a digital terrestrial broadcasting station 15 via the Internet 3. And an interface 5 connected to the mobile phone base stations 2A and 2B.

  The control unit 6 is composed of a microprocessor or the like, and executes control operations stored in the memory. In the present embodiment, the control unit 6 obtains the moving speed and traveling direction of each ship based on the ship position information and time information received from the information processing system 21.

  The storage device 7 stores the position information and time information of the ship received from the information processing system 21 using the ship ID of each ship as a key.

  The interface 5 connects the control unit 6, the storage device 7, and the Internet 3 to each other.

  Hereinafter, position information transmission processing executed by the computer 9 of the information processing system 21 mounted on the ships 1A, 1B, 1C, 1D will be described with reference to FIG. The position information transmission process is repeated by the control unit 18 of the computer 9 at regular time intervals in response to a timer interrupt or the like.

  First, the control unit 18 acquires the current position information and current time information of the ship from the GPS 8 (step S101). Next, the control unit 18 associates the ship ID of the ship with the acquired ship position information and time information, and transmits the information to the server 4 via the mobile phone terminal 10, the mobile phone base stations 2A, 2B, and the like. (Step S102).

  When the interface 5 of the server 4 receives position information or the like from the information processing system 21 via the Internet 3, the interface 5 notifies the control unit 6 accordingly. In response to the notification, the control unit 6 starts the navigation information calculation transmission process shown in FIG. Hereinafter, the navigation information calculation transmission process will be described.

  First, the control unit 6 takes in the received ship ID, ship position information, and time information, and stores them in the storage device 7 (step S201).

  Next, the control part 6 discriminate | determines whether the information of the same ship ID was received in the past (step S202). If received (step S202; Yes), the control unit 6 determines the traveling direction of the ship from the current position and the previous position, and determines the distance between the previous position and the current position by the time difference. By dividing, the moving speed of the ship is calculated (step S203).

  Subsequently, the control unit 6 generates navigation information including the ship ID, position information, speed information, and direction information (step S204).

  Next, the control unit 6 transmits the generated navigation information to all the terrestrial digital broadcasting stations 15 (step S205). When this transmission is performed, each terrestrial digital broadcasting station 15 broadcasts the received navigation information, and in the ships 1A, 1B, 1C, and 1D, the terrestrial digital broadcast receiver 16 receives the broadcast navigation information. The control unit 18 sequentially stores the latest navigation information received by the terrestrial digital broadcast receiver 16 in the storage device 19.

  If NO is determined in step S202, step S203 is skipped and only the position information is transmitted to the digital broadcast station 15.

  Next, image display processing in the information processing system 21 mounted on the ships 1A, 1B, 1C, 1D will be described with reference to FIG. This image display process is to display the positional relationship between the own ship and a nearby ship on the display device 20, and is repeatedly performed by the control unit 18.

  First, the control unit 18 selects a ship located within a predetermined distance from the own ship based on the navigation information stored in the storage device 19 (step S301).

  Next, the control part 18 calculates | requires the relative position of each ship on the basis of the position of the own ship (step S302).

  Next, the control part 18 produces | generates the parameter | index which shows the speed by the length of the arrow, and the advancing direction by the direction of the arrow about each ship (step S303).

  Subsequently, as shown in FIG. 7, the control unit 18 uses the index (arrow) generated in step S303 at the position obtained in step S302 of the other ship 13 on the display device 20 with the own ship 12 as a reference. Is placed and displayed. Further, the ship ID and the moving speed of the ship are displayed in proximity to each index (step S304). By this display, the crew of the own ship 12 can easily determine where the other ship 13 in the vicinity of the own ship 12 is located and in what direction and at what speed. Thereby, the crew member can estimate the possibility of a collision with other ships 13 in advance.

  A broken line 14 shown in FIG. 7 indicates an alarm boundary displayed on the display device 20 by the control unit 18 based on the latest navigation information received by the terrestrial digital broadcast receiver 16. The warning boundary 14 is a circle centered on the position of the ship 12, and its radius is arbitrarily set by the crew. And the control part 18 detects whether the other ship 13 approachs into the alarm boundary 14, and when it detects that it approachs, it makes the alarm apparatus 11 emit an alarm.

  According to this embodiment, since each ship can know each other's position, moving speed, and traveling direction, collision can be prevented. Since communication from the server 4 to the ship is performed by broadcasting, a large amount of ship information can be efficiently sent from the server 4 to all ships at high speed. That is, since the information transmission from the server 4 to the ship is broadcasted by broadcasting, when the number of ships is n, the communication amount is only increased in proportion to n. In addition, by using one segment of digital terrestrial broadcasting having a communication speed of about 416 kbps, it is possible to transmit information on 1000 or more ships per second. By combining multiple segments, it is possible to obtain more ship information. By using terrestrial digital broadcasting in this way, it is possible to avoid congestion while acquiring a large amount of ship information.

  Since the ship safe navigation network system of the present embodiment uses inexpensive consumer equipment and the widely used Internet / mobile phone communication network, an open system can be configured at low cost.

  Further, by calculating movement information of the ships 1A, 1B, 1C, and 1D on the server 4 based on the position information from the ships 1A, 1B, 1C, and 1D, the communication amount is reduced and the ships 1A and 1B are calculated. , 1C, 1D systems are simplified. As a result, it is possible to reduce the size and price of equipment mounted on the ship, and to construct a ship safety navigation network system that can be easily mounted on a small ship.

  As described above, the ship safe navigation network system of the present embodiment has a simple configuration and can handle a large amount of ship information at a high speed even when compared with the existing AIS.

  In addition, since navigation information such as surrounding position information and movement information is acquired using wireless communication, it can be expected that the function is exhibited even when visibility is poor at night or in fog.

  According to this embodiment, since many ships including a small ship can obtain navigation information of ships around the own ship, it is possible to prevent the collision of the ships.

  In addition, this invention is not limited to the said embodiment, A various change can be made in a claim.

  For example, the timing at which the server 4 transmits the navigation information is arbitrary. When the server 4 receives the position information from the information processing system 21, the server 4 temporarily stores it in the storage device 7, and periodically, for each ship in turn. The latest position information, speed information, direction information, and the like may be updated, and periodically updated information may be transmitted.

  In addition, for example, the transmission means for transmitting the position information and the like is installed in a marine obstacle that is present in the water area where the ships 1A, 1B, 1C, and 1D navigate, such as squid and reef, and hinders the navigation of the ship. May be. In this case, the position information of the obstacle, the time information indicating the time when the position information was acquired, and the identification information of the obstacle are transmitted to the server 4 by the transmission unit. The movement information indicating the movement speed and the movement direction is transmitted to the information processing system 21 of each ship through the terrestrial digital broadcasting station 15 together with the position information of the obstacle. Thereby, since each ship can know the position, moving speed, and moving direction of an obstacle, a ship is prevented from colliding with an obstacle.

  For obstacles that do not move, such as the above-mentioned reefs, the location information and identification information of the obstacles are stored in advance in the storage device 7 of the server 4, and the ship is periodically transmitted through the terrestrial digital broadcasting station 15. It may be distributed to the information processing system.

  In addition, the system configuration, data processing procedure, and the like can be arbitrarily changed as long as the same operation and effect can be obtained.

It is a figure which shows the structure of the ship safe navigation network system of this invention. It is an example of the block diagram of the information processing system mounted in a ship. It is an example of the block diagram of a server. It is a flowchart explaining a positional information transmission process. It is a flowchart explaining a navigation information calculation transmission process. It is a flowchart explaining an image display process. It is an example of a display of ship navigation information.

Explanation of symbols

1A, 1B, 1C, 1D Ship 2A, 2B Mobile phone base station 3 Internet 4 Server 5 Server interface 6 Server control unit 7 Server storage device 8 GPS
9 Computer 10 Mobile Phone Terminal 11 Alarm Device 12 Own Ship 13 Other Ship 14 Alarm Boundary 15 Digital Terrestrial Broadcasting Station 16 Terrestrial Digital Broadcast Receiver 17 Computer Interface of Information Processing System Mounted on Ship 18 Information Processing Mounted on Ship Computer control unit of system 19 Storage device of computer of information processing system mounted on ship 20 Display device of computer of information processing system mounted on ship 21 Information processing system 1 Wireless communication

Claims (9)

An information processing system installed in each of a plurality of ships;
A broadcasting station that transmits information;
A server connected to the broadcasting station via the Internet, the information processing system and a server connected via the Internet and wireless communication,
Each of the information processing systems acquires the position information of the ship where the information processing system is installed, the acquired position information of the ship, the time information indicating the time when the position information of the ship is acquired, and the identification information of the ship To the server via the Internet and the wireless communication,
The server receives the ship position information, the time information, and the ship identification information transmitted from the information processing systems via the Internet and the wireless communication, and based on the received information, The movement speed and the traveling direction of the ship in which the information processing system is installed are calculated, and the calculated movement speed, the movement information indicating the traveling direction, the position information of the ship, and the identification information of the ship are calculated on the Internet. To the broadcast station via
The broadcast station broadcasts information received from the server,
The information processing system receives a broadcast from the broadcast station and outputs received information.
A ship safety navigation network system. The information processing system includes means for transmitting the position information of the ship, the time information, and the identification information of the ship through the wireless communication,
The network that realizes the wireless communication receives a wireless signal from the information processing system, and receives the position information of the ship, the time information, and the identification information of the ship that are included in the received wireless signal. A base station that transmits to
The maximum distance at which the information processing system can receive broadcasts from the broadcasting station is greater than the maximum distance at which the information processing system and the base station can communicate.
The ship safe navigation network system according to claim 1. Further comprising image display means installed in the ship,
The image display means is an image indicating the position, traveling direction, and moving speed of the ship and other ships existing around the ship based on the position information and the movement information of the ship received by the information processing system. Display,
The ship safe navigation network system according to claim 1 or 2. Further comprising an alarm means installed in the ship,
The warning means detects whether or not another ship enters within a predetermined range where the own ship is present based on the position information and the movement information of the ship received by the information receiving means, and the other ship enters. Then, when it detects it, an alarm is issued.
The ship safe navigation network system according to any one of claims 1 to 3. The information processing system acquires position information of the ship by a satellite positioning system.
The ship safe navigation network system according to any one of claims 1 to 4. The broadcasting station broadcasts the position information of the ship, the movement information, and the identification information of the ship by terrestrial digital broadcasting,
The information processing system includes a terrestrial digital broadcast receiver that receives information broadcast from the broadcasting station, and outputs information received by the terrestrial digital broadcast receiver.
The ship safe navigation network system according to any one of claims 1 to 5. The server transmits the position information of the obstacle at sea and the identification information of the obstacle together with the movement information, the position information of the ship and the identification information of the ship to the broadcasting station.
The ship safe navigation network system according to any one of claims 1 to 6. The network for realizing the wireless communication is a mobile phone communication network, a wireless LAN, or a WiMAX network.
The ship safe navigation network system according to any one of claims 1 to 7. The information receiving means and the information transmitting means installed in the same ship are constituted by a single device.
The ship safe navigation network system according to any one of claims 1 to 8.

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