JP2000255486A - Automatic ship identification system and ship display plotter using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically send proper information by providing a message means for making and storing a message for demanding assistance in emergency, and broadcasting the message as an addressed safety related communication letter by outputting the message from the message means when pushing a rescue demanding switch in emergency. SOLUTION: A nearby ship selecting part 11 is arranged to successively select, store and renew only nearby ships capable of proper rescue from nearby ships by positional information from an automatic ship identification system(AIS) control part 2. A rescue demanding switch 12 is arranged to manually demand rescue when requiring the rescue, and a message making part 13 is arranged to premake and prestore the rescue demanding content as a message. Thus, a rescue demanding message can be transmitted only to ships capable of proper rescue from nearby ships only by pushing the rescue demanding switch 12 in emergency to automatically send proper information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an automatic ship identification system (Shipborne Automatic Identification System).
(AIS)) and a ship display plotter using the same.

[0002]

2. Description of the Related Art An automatic ship identification system is a system for transmitting and receiving positional information of a ship between a ship and a land or between ships to prevent collisions.
It will be required to be installed on ships over 0 GT. This automatic ship identification system time-division multiplexes a VHF signal of a predetermined frequency (60 seconds to 2250
Slot), each ship inserts its own position information, navigation information, unique information, etc. into the empty slot and transmits it, and receives this signal constantly to receive position information, navigation information, The system obtains unique information and avoids collision with other ships.

[0003]

By the way, ships of a certain size are usually equipped with radio broadcasting equipment. For example, emergency reports such as distress and grounding are sent to all ships using this radio broadcasting equipment. The ship that received the emergency call communicated with the ship that issued the emergency call to confirm the positional relationship,
Determine if your ship needs to go to rescue. Ships destined for rescue in response to an emergency call are desirably those that can reach the ship that issued the emergency call in the shortest time among vessels equipped with the facilities that can rescue them. It is not easy to determine whether your ship falls under this category. However, if an automatic ship identification system that originally has the function of acquiring the radio broadcasting equipment and the position information of another ship can be used, there is no need to communicate position information at least, and an emergency call that can automatically select a ship to rescue The device should be able to be configured.

When the danger of collision is detected by the automatic ship identification system, both or some of the ships must take a collision avoiding action, and it is determined which of the two vessels takes the avoiding action by wireless communication between the ships. I will go and check each other. In this case, if one ship is operating on a fishing boat, the merchant ship must take evasive action even if the other ship is a merchant ship, etc. It cannot be known by the identification system, but only by wireless communication. However, the smaller the fishing boat in operation, the less it can be rotated, making such wireless communication difficult. Also, in order to avoid fishing boats in operation, it is difficult to take appropriate avoidance action unless the size of the fishing net is known.If the avoidance action is performed without knowing the length of the fishing net, collision with the fishing boat can be avoided. However, there is a risk that the fishing boat may be overturned by entanglement with the net. However, the automatic ship identification system inherently has a function of broadcasting unique information to nearby ships, so if this function can be used, it is easy to determine whether or not the ship is operating, and if it is operating, the fishing net It should be possible to construct an operation notification device that can notify the size of the ship to nearby ships.

[0005] In the case of fishing and operating in a fleet (referred to as group operation), it is necessary to appropriately know the positional relationship of other ships in the group in order to determine, for example, the net spacing. For this reason, in the related art, work is performed in which group ships communicate with each other and only the group ships are plotted on a chart or the like. However, the automatic vessel identification system inherently has a function to display the positional relationship of nearby vessels to avoid danger due to collision, and if this information is available, it is easy to automatically plot only group vessels in such cases It should be possible to construct a vessel display plotter that performs

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an emergency notification device for automatically and appropriately reporting, an automatic ship identification system functioning as an operation notification device, and a ship display plotter using AIS. It is intended to provide.

[0007]

An automatic ship identification system according to the present invention is an automatic ship identification system having an AIS control unit functioning as an AIS, and creates and stores a message for requesting assistance in an emergency. Message means, and selection means for sequentially selecting and storing / updating several vessels that can rescue their own vessels in an emergency from the neighboring vessels based on the information of the neighboring vessels from the AIS control unit in the order of their distance, By pressing the rescue request switch in an emergency,
A message is output from the message means, the output message is attached with the identification number of the vessel selected by the selection means, sent to the AIS control unit as a rescue request message, and sent to the AIS control unit by the AIS control unit. Broadcasting means for broadcasting as a communication message.

Further, detecting means for detecting a nearby ship having a risk of collision based on information of the nearby ship from the AIS control unit, and a notification that the own ship is a fishing boat and is operating and the size of the dangerous area. Message means for creating and storing a message in advance, an operation switch that is turned on during operation,
When a danger ship is detected by the detection means in a state where the operation switch is turned on, the message means outputs a message with an identification number of the danger ship to output the AIS.
Broadcasting means for sending the message to a control unit and broadcasting the message as a safety-related message with destination by the AIS control unit.

Message means for creating and storing a message for requesting assistance in an emergency;
A selection means for sequentially selecting and storing / updating several vessels that can rescue their own vessels in the event of an emergency from neighboring vessels based on information on the neighboring vessels from the S control unit in the order of their distance, and a rescue request switch in an emergency. By pressing, a message is output from the message means, and the output message is sent to the AIS control unit as a rescue request message with the identification number of the vessel selected by the selection means attached thereto. Broadcast means for broadcasting as a safety-related message with a destination,
Detecting means for detecting a nearby ship having a risk of collision based on information on the nearby ship from the AIS control unit, and previously creating and storing a message indicating that the own ship is a fishing boat and is operating and the size of the dangerous area. Message means, an operation switch to be turned on at the time of operation, and a danger ship detected by the detection means in a state where the operation switch is turned on, the message means outputs a message with an identification number of the dangerous ship. Send to the AIS control unit,
Broadcasting means for broadcasting as a safety-related message with destination in the control unit.

A ship display plotter using AIS according to the present invention includes an AIS control unit functioning as AIS, input means for inputting an ID number of a group ship, and storage means for storing the input number. Selecting means for inputting the information of the neighboring vessel from the AIS control unit and the group vessel ID number stored in the storage means, and selecting and outputting only the information of the vessel having the group vessel ID number among the neighboring vessels. And display means for displaying group ship information output from the selection means.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram for explaining the first embodiment of the present invention. In FIG. 1, 1
Is a GPS receiver for acquiring the position of the ship, 2 is a GPS receiver, 1 is combined with a TDMA radio transceiver (not shown), etc., and is combined with an AIS (Shipborne Automatic Identification S).
AIS controller 11 functioning as a ystem) is a neighborhood that can be appropriately rescued from neighboring vessels based on the position information (or size information based on the position information and the identification information of the ship) from AIS controller 2. Select and store only ships sequentially
A rescue request switch 12 for manually requesting rescue when a rescue is required for a vessel equipped with the present apparatus, and a rescue request switch 13 for creating and storing a message for rescue request in advance as a message. This is the message creation unit.

The first embodiment of the present invention is configured as shown in FIG. 1 and not only functions as an AIS but also a ship which can perform an appropriate rescue from neighboring ships only by pressing the rescue request switch 12 in an emergency ( ) Can be provided with a function as an emergency notification device that transmits a rescue request message only to one or more). That is, the position of the own ship obtained by the GPS receiver 1 is constantly broadcast as AIS to the surroundings by the AIS control unit 2 via a wireless transceiver (not shown). The AIS control unit 2 processes the received other ship information as AIS. In this system, the ship identification number of the other ship and its position information are sent to the nearby ship selection unit 11 together with the position information of the own ship. . Then, the neighboring vessel selecting unit 11 always selects several vessels among the neighboring vessels which are closer to the own vessel in order of the distance (excluding small vessels for which rescue is difficult by the vessel identification number) based on the own vessel position. Then, the identification numbers of these vessels are stored (this operation is performed successively and the stored contents are also sequentially updated). Then, when the rescue request switch 12 is pressed in an emergency, the message creating unit 13 automatically creates a message for asking for rescue by using the ship identification number of the nearby ship stored in the nearby ship selection unit 11 as a destination, "Safety-Related Message with Address" (Addressed
Safety Related Message: INTERNATIONAL TELECOMMUNIC
ATION UNION, RADIOCOMMUNICATION STUDY GROUPS, Docu
ment 8 / 15-EJ, 30 March 1998), the AIS control unit 2 is started up, and the created “safety-related message with destination” is broadcast via a wireless transceiver (not shown).

Since the first embodiment of the present invention is configured and operates as described above, in an emergency, only by pressing the rescue request switch, a rescue request is made only to those of the nearby vessels that can rescue properly. An automatic ship identification system having a function as an emergency notification device can be configured. In addition, the function as an emergency call device is that, like this type of conventional emergency call device, emergency calls are made to ships that are not suitable for rescue, so each ship needs to confirm by radio communication, etc. It can be an efficient function with no waste.

FIG. 2 is a block diagram for explaining a second embodiment of the present invention. In FIG. 2, 1 is GPS
Receiving unit, 2 AIS control unit, 21 dangerous ship detection unit, 22
Is a message creation unit, and 23 is an operation switch. The second embodiment of the present invention is configured as shown in FIG.
Not only as a function of S, but also as an operation notification device that can automatically inform the danger ship that appeared when the ship itself is a fishing boat and is in operation that it is operating and the size of the fishing net. It will be possible to have functions.

That is, the own ship position obtained by the GPS receiver 1 is constantly broadcast to the surroundings by the AIS control unit 2 as AIS via a radio transceiver (not shown). The AIS control unit 2 processes the received other ship information as AIS. In this system, the ship identification number and the position information of the other ship are sent to the dangerous ship detection unit 21 together with the position information of the own ship. Then, the dangerous ship detection unit 21 detects the presence or absence of the dangerous ship based on the position of the own ship. The presence of dangerous ships is determined by AI
Based on the information from the S control device 2, the azimuth and the distance of the position of the other ship are obtained from the own ship position, and the other ship whose azimuth is constant and the distance gradually decreases is detected and detected as a dangerous ship. Note that it is necessary to set a small range for the bearing in consideration of the size of the other ship.

On the other hand, the message creating unit 22 creates a message indicating the length of the network and the like (that is, the size of the danger zone) if necessary, in addition to the fact that the ship is operating. This may be stored as unique information in a ROM or the like. When the operation switch 23 is turned on, the operation notification device operates, and when a dangerous ship is detected by the dangerous ship detection unit 21, the ship identification number of the dangerous ship sent from the dangerous ship detection unit 21 is entered. The message indicating that the operation is in progress created in the message creating unit 22 as a destination is extracted as a telegram, and the AIS control unit 2 is activated so that the message can be broadcast in the form of a “safety-related message with destination”, and the “safety-related message with destination” is activated. The message is transmitted to the dangerous ship via a wireless transceiver (not shown). In response to this message, the partner ship returns a confirmation message, so if the confirmation message is configured, it can be understood that the message has reliably reached the partner ship.
If this confirmation is not returned, issue an alarm, etc.
It is also possible to adopt a configuration to notify the danger.

Since the second embodiment of the present invention is constructed and operates as described above, not only the function as AIS but also
When a dangerous ship appears, a function as an operation notification device that automatically notifies the dangerous ship of the fact that the own ship is operating on a fishing boat and the size of the fishing net can be provided. Further, the fishing boat only needs to turn on the operation switch, and can concentrate on the operation. In addition, since the other ship can obtain information that the fishing boat is operating without performing individual wireless communication, the avoidance operation can be performed quickly. In addition, the message sent by the fishing boat can be automatically checked with the message sent by the other ship, making it a highly safe device.

FIG. 3 is a block diagram for explaining a third embodiment of the present invention. In FIG. 3, 2 is the AIS
Control unit, 31 is an ID number input unit, 32 is a number storage unit, 3
Reference numeral 3 denotes a group ship selection unit, and reference numeral 34 denotes a plotter. The third embodiment of the present invention is configured as shown in FIG.
Utilizing a, it is possible to configure a ship display plotter that can display only a group ship in real time when performing a group operation without requiring wireless communication at regular intervals.

That is, in the group operation, the user operates the ID number input unit 31 to input the ID number of each of the group ships, and the input ID number is stored in the number storage unit 32. On the other hand, the AIS control unit 2
As a function of S, the information of the neighboring vessels is always received, and the information of the neighboring vessels is also input to the group vessel selecting unit 33. The group ship selection unit 33 selects and outputs only the ship information of the identification number stored in the number storage unit 32 from the neighboring ship information input from the AIS control unit 2. Therefore, the output of the group ship selection unit 33 is navigation information including the position of each group ship. This information is sent to the plotter 34, and is graphically displayed on the plotter simultaneously with the position information of the ship. It is not necessarily limited to the graphic display. For example, when operating with two vessels, numerical information such as speed, interval, and course is also important information. Is also good.

Since the third embodiment of the present invention is constructed and operates as described above, a ship display plotter for automatically plotting navigation information including the position of each group ship during group operation using the AIS. Can be configured. Also, unlike the AIS display, this ship display plotter can automatically extract only group ship information from many ship information and display it in real time.
It is easy to confirm each other's operation state, and it is not necessary to perform wireless communication for confirming each other's position.

[0021]

As described above, the present invention functions as an emergency notification device and an operation notification device that automatically and appropriately makes an appropriate notification without requiring wireless communication by simply adding a simple configuration to the AIS control section. There is an effect that an automatic ship identification system can be constructed, and a ship display plotter suitable for group operation can be configured using AIS.

[Brief description of the drawings]

FIG. 1 is a block diagram for explaining a first embodiment of the present invention.

FIG. 2 is a block diagram for explaining a second embodiment of the present invention.

FIG. 3 is a block diagram for explaining a third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 GPS receiving unit 2 AIS control unit 11 Neighboring ship selecting unit 12 Rescue request switch 13,22 Message creating unit 21 Dangerous ship detecting unit 23 Operation switch 31 ID number input unit 32 Number storage unit 33 Group ship selecting unit 34 Plotter

Claims (4)

[Claims] 1. An AIS (Shipborne Automatic Identifi
In an automatic ship identification system having an AIS control unit functioning as an AIS control unit, a message unit for creating and storing a message for requesting assistance in an emergency, and a nearby ship based on information of a nearby ship from the AIS control unit. Selecting means for sequentially selecting and storing / updating several vessels capable of rescue their own vessels in the case of emergency in the order of their distance, and pressing a rescue request switch in an emergency to output a message from the message means Broadcasting means for sending the output message with the identification number of the vessel selected by the selection means as a rescue request message to the AIS control section and for the AIS control section to broadcast as a safety-related communication message with a destination An automatic ship identification system, comprising: 2. A mounted on a fishing boat and functioning as an AIS
In an automatic ship identification system having an IS control unit, detection means for detecting a nearby ship having a danger of collision based on information of the nearby ship from the AIS control unit; A message means for preparing and storing a message for notifying the size of the area in advance; an operation switch to be turned on during operation; and, when a dangerous ship is detected by the detection means while the operation switch is on, the message means A message with the identification number of the dangerous ship is output and the AIS
Broadcasting means for sending to the control unit and broadcasting as a safety-related message with destination by the AIS control unit. 3. A mounted on a fishing boat and functioning as an AIS
In an automatic ship identification system having an IS control unit, a message means for creating and storing a message for requesting assistance in an emergency, and information on a nearby ship from the AIS control unit for an own ship in an emergency Selection means for sequentially selecting and storing and updating several vessels capable of rescue in the order of their distance, and pressing a rescue request switch in an emergency, a message is output from the message means, and the output message includes The AI identification number of the vessel selected by the selection means is added to the AI request message as a rescue request message.
Broadcasting means that is sent to the S control unit and broadcasts as a safety-related message with a destination in the AIS control unit, and detection means for detecting a nearby ship with a risk of collision based on information of the nearby ship from the AIS control unit, Message means for creating and storing in advance a message indicating that the ship is a fishing boat and is operating and the size of the danger area, an operation switch that is turned on during operation, and a risk to the detection means when the operation switch is turned on. When a ship is detected, the message means outputs a message with the identification number of the dangerous ship and sends it to the AIS control unit,
An automatic ship identification system, comprising: a broadcast unit configured to broadcast as a safety-related communication message with a destination in a control unit. 4. An AIS control unit functioning as an AIS, an input unit for inputting an ID number of a group ship, a storage unit for storing the input number, and information on a nearby ship from the AIS control unit. Selecting means for inputting the group ship ID number stored in the storage means, and selecting and outputting only information on the ship having the group ship ID number among the neighboring ships; and a group ship output from the selecting means. And a display means for displaying the information of (1). A ship display plotter using AIS, comprising: