JP3851958B1 - Marine mobile object monitoring system near submarine entity, and marine mobile object monitoring method near submarine entity - Google Patents

Abstract

A system and method are provided that can monitor whether a bottom of an offshore moving object approaches an undersea object with high reliability.
An AIS receiver that receives an MMSI number transmitted from an AIS standard apparatus by TDMA or the like, a current position of a marine mobile unit, a current moving direction and a speed, and an MMSI number and a marine mobile unit. A database device 3 capable of storing and retrieving bottom depth-related values in association with each other, a device 4 for outputting the height of the sea surface near an undersea entity, and a marine mobile body searched by the database device 3 from the received MMSI number From the bottom depth-related value and the sea level height, calculate the bottom position of the maritime mobile body, predict the future position of the sea mobile body, and approach the bottom of the sea mobile body to the upper surface of the submarine entity. It is provided with a controller 1 for determining whether or not.
[Selection] Figure 1

Description

  The present invention is a system that is installed in the vicinity of an undersea entity and monitors whether the bottom of any offshore mobile object that is navigating in the vicinity of an undersea entity approaches the undersea object. And a method.

  In coastal areas such as harbors, accidents such as landings and grounding of marine mobile objects such as ships due to human factors (insufficient guarding, dozing operation, inappropriate ship handling) occur frequently. Under such circumstances, on the ship side, although various systems and methods for collision avoidance for ensuring the safety of the ship itself, mainly the ship, have been studied, the seabed, underwater structures, etc. There are no systems and methods for preventing contact by monitoring an oceanic moving object from the side of an undersea surface entity with the entity as the main body.

A technique disclosed in Patent Document 1 is known as a technique for preventing contact between a marine mobile body and another object. However, this is because the radar monitors the position of the marine moving body, and also monitors the altitude of the marine moving body with a laser beam emitted in the horizontal direction in synchronization with the radar. This is not a technique for preventing the contact between the bottom of the sea mobile body and the underwater objects. In addition to this, there is conventionally no known technique for preventing contact between a marine mobile body and other objects.
JP 2004-264212 A

  The present invention has been made to solve the above-described problems, and the problem to be solved by the present invention is that when an undersea entity intersects a nearby marine mobile route, it is highly reliable and It is an object of the present invention to provide a system and a method capable of monitoring whether or not the bottom of a mobile body of an offshore mobile body approaches an undersea object.

In order to solve the above-described problem, a marine mobile object monitoring system in the vicinity of an undersea entity according to claim 1 of the present invention is provided.
A marine mobile monitoring system installed in the vicinity of an undersea entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or, information transmitted by DSC (Digital Selective Call) method, which is a MMSI number that is a number for identifying the transmitting-side maritime mobile radio station, the current position of the transmitting-side maritime mobile unit, and the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the current moving direction and the current moving speed of the transmitting marine mobile body;
An electronic computer, which stores the data set of the MMSI number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number And when the MMSI number is input as a search input, the corresponding sea mobile body bottom depth related value is retrieved and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
It has a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max , which is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine vehicle at the full load time, is stored.
The discriminating means inputs the MMSI number included in the AIS information received from radio waves from a marine mobile body existing in a sea area near a submarine entity to the marine mobile body bottom depth database means as the search input. The sea mobile body bottom depth database means searches from the sea mobile body bottom depth related value retrieved and output by the sea mobile body bottom depth database means and the sea surface height in the vicinity of the subsea entity. The value obtained by multiplying the draft depth d _max at the full load output by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the sea mobile body bottom depth of the sea mobile body, Calculate the position of the bottom of the maritime mobile body and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body. The sea Marine mobile bottom of the body, characterized in that to determine whether to approach.

In addition, a marine mobile object monitoring system in the vicinity of an undersea entity according to claim 2 of the present invention,
A marine mobile monitoring system installed in the vicinity of an undersea entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or, information transmitted by DSC (Digital Selective Call) method, which is a MMSI number that is a number for identifying the transmitting-side maritime mobile radio station, the current position of the transmitting-side maritime mobile unit, and the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the current moving direction and the current moving speed of the transmitting marine mobile body;
An electronic computer, which stores the data set of the MMSI number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number And when the MMSI number is input as a search input, the corresponding sea mobile body bottom depth related value is retrieved and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
It has a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max that is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine mobile body at the full load time to an appropriate value in the range of 0.1 to 10.0. The value obtained by multiplying the correction coefficient α, which is the value, is stored as the depth of the bottom of the sea mobile body of the sea mobile body,
The discriminating means inputs the MMSI number included in the AIS information received from radio waves from a marine mobile body existing in a sea area near a submarine entity to the marine mobile body bottom depth database means as the search input. Then, the position of the bottom of the sea mobile body of the sea mobile body is calculated from the sea bottom depth of the sea mobile body retrieved and output by the sea mobile body bottom depth database means and the sea surface height near the subsurface entity. The future position of the maritime mobile object is predicted and calculated from the current position, direction and speed of the maritime mobile object, and whether the bottom of any of the marine mobile objects approaches the submarine entity. It is characterized by determining whether or not.

In addition, a marine mobile object monitoring system in the vicinity of an undersea entity according to claim 3 of the present invention,
A marine mobile monitoring system installed in the vicinity of an undersea entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or information transmitted by a DSC (Digital Selective Call) method, which is an IMO number that identifies the transmitting-side maritime mobile unit, the current location of the transmitting-side maritime mobile unit, and the current location of the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the moving direction and the current moving speed of the transmitting marine mobile body;
Consists of a data set of the IMO number and a data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the IMO number in an electronic computer. When the IMO number is input as a search input, the corresponding ocean mobile body bottom depth data storage unit is searched for and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
It has a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max , which is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine vehicle at the full load time, is stored.
The discriminating means inputs the IMO number included in the AIS information received from the radio wave from the sea mobile body existing in the sea area near the sea surface entity to the sea mobile body bottom depth database means as the search input. The sea mobile body bottom depth database means searches from the sea mobile body bottom depth related value retrieved and output by the sea mobile body bottom depth database means and the sea surface height in the vicinity of the subsea entity. The value obtained by multiplying the draft depth d _max at the full load output by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the sea mobile body bottom depth of the sea mobile body, Calculate the position of the bottom of the maritime mobile body and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body. The sea movement Wherein the marine mobile bottom of it is determined whether or not approaching.

In addition, a marine mobile object monitoring system in the vicinity of an undersea entity according to claim 4 of the present invention,
A marine mobile monitoring system installed in the vicinity of an undersea entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or information transmitted by a DSC (Digital Selective Call) method, which is an IMO number that identifies the transmitting-side maritime mobile unit, the current location of the transmitting-side maritime mobile unit, and the current location of the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the moving direction and the current moving speed of the transmitting marine mobile body;
Consists of a data set of the IMO number and a data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the IMO number in an electronic computer. When the IMO number is input as a search input, the corresponding ocean mobile body bottom depth data storage unit is searched for and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
It has a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max that is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine mobile body at the full load time to an appropriate value in the range of 0.1 to 10.0. The value obtained by multiplying the correction coefficient α, which is the value, is stored as the depth of the bottom of the sea mobile body of the sea mobile body,
The discriminating means inputs the IMO number included in the AIS information received from the radio wave from the sea mobile body existing in the sea area near the sea surface entity to the sea mobile body bottom depth database means as the search input. Then, the position of the bottom of the sea mobile body of the sea mobile body is calculated from the sea bottom depth of the sea mobile body retrieved and output by the sea mobile body bottom depth database means and the sea surface height near the subsurface entity. The future position of the maritime mobile object is predicted and calculated from the current position, direction and speed of the maritime mobile object, and whether the bottom of any of the marine mobile objects approaches the submarine entity. It is characterized by determining whether or not.

In addition, a method for monitoring a marine mobile object near an undersea entity according to claim 5 of the present invention is provided.
A marine mobile object monitoring method installed in the vicinity of a submarine entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or, information transmitted by DSC (Digital Selective Call) method, which is a MMSI number that is a number for identifying the transmitting-side maritime mobile radio station, the current position of the transmitting-side maritime mobile unit, and the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the current moving direction and the current moving speed of the transmitting marine mobile body;
An electronic computer, which stores the data set of the MMSI number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number And when the MMSI number is input as a search input, the corresponding sea mobile body bottom depth related value is retrieved and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
Using a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max , which is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine vehicle at the full load time, is stored.
The discriminating means inputs the MMSI number included in the AIS information received from radio waves from a marine mobile body existing in a sea area near a submarine entity to the marine mobile body bottom depth database means as the search input. The sea mobile body bottom depth database means searches from the sea mobile body bottom depth related value retrieved and output by the sea mobile body bottom depth database means and the sea surface height in the vicinity of the subsea entity. The value obtained by multiplying the draft depth d _max at the full load output by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the sea mobile body bottom depth of the sea mobile body, Calculate the position of the bottom of the maritime mobile body and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body. The sea Marine mobile bottom of the body, characterized in that to determine whether to approach.

Further, a method for monitoring an oceanic mobile object near an undersea entity according to claim 6 of the present invention is provided.
A marine mobile object monitoring method installed in the vicinity of a submarine entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or, information transmitted by DSC (Digital Selective Call) method, which is a MMSI number that is a number for identifying the transmitting-side maritime mobile radio station, the current position of the transmitting-side maritime mobile unit, and the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the current moving direction and the current moving speed of the transmitting marine mobile body;
An electronic computer, which stores the data set of the MMSI number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number And when the MMSI number is input as a search input, the corresponding sea mobile body bottom depth related value is retrieved and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
Using a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max that is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine mobile body at the full load time to an appropriate value in the range of 0.1 to 10.0. The value obtained by multiplying the correction coefficient α, which is the value, is stored as the depth of the bottom of the sea mobile body of the sea mobile body,
The discriminating means inputs the MMSI number included in the AIS information received from radio waves from a marine mobile body existing in a sea area near a submarine entity to the marine mobile body bottom depth database means as the search input. Then, the position of the bottom of the sea mobile body of the sea mobile body is calculated from the sea bottom depth of the sea mobile body retrieved and output by the sea mobile body bottom depth database means and the sea surface height near the subsurface entity. The future position of the maritime mobile object is predicted and calculated from the current position, direction and speed of the maritime mobile object, and whether the bottom of any of the marine mobile objects approaches the submarine entity. It is characterized by determining whether or not.

In addition, a method for monitoring a marine mobile object in the vicinity of an undersea entity according to claim 7 of the present invention is provided.
A marine mobile object monitoring method installed in the vicinity of a submarine entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or information transmitted by a DSC (Digital Selective Call) method, which is an IMO number that identifies the transmitting-side maritime mobile unit, the current location of the transmitting-side maritime mobile unit, and the current location of the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the moving direction and the current moving speed of the transmitting marine mobile body;
Consists of a data set of the IMO number and a data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the IMO number in an electronic computer. When the IMO number is input as a search input, the corresponding ocean mobile body bottom depth data storage unit is searched for and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
Using a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max , which is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine vehicle at the full load time, is stored.
The discriminating means inputs the IMO number included in the AIS information received from the radio wave from the sea mobile body existing in the sea area near the sea surface entity to the sea mobile body bottom depth database means as the search input. The sea mobile body bottom depth database means searches from the sea mobile body bottom depth related value retrieved and output by the sea mobile body bottom depth database means and the sea surface height in the vicinity of the subsea entity. The value obtained by multiplying the draft depth d _max at the full load output by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the sea mobile body bottom depth of the sea mobile body, Calculate the position of the bottom of the maritime mobile body and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body. The sea movement Wherein the marine mobile bottom of it is determined whether or not approaching.

Further, a method for monitoring an oceanic moving object near an undersea entity according to claim 8 of the present invention is provided.
A marine mobile object monitoring method installed in the vicinity of a submarine entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or information transmitted by a DSC (Digital Selective Call) method, which is an IMO number that identifies the transmitting-side maritime mobile unit, the current location of the transmitting-side maritime mobile unit, and the current location of the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the moving direction and the current moving speed of the transmitting marine mobile body;
Consists of a data set of the IMO number and a data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the IMO number in an electronic computer. When the IMO number is input as a search input, the corresponding ocean mobile body bottom depth data storage unit is searched for and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
Using a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max that is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine mobile body at the full load time to an appropriate value in the range of 0.1 to 10.0. The value obtained by multiplying the correction coefficient α, which is the value, is stored as the depth of the bottom of the sea mobile body of the sea mobile body,
The discriminating means inputs the IMO number included in the AIS information received from the radio wave from the sea mobile body existing in the sea area near the sea surface entity to the sea mobile body bottom depth database means as the search input. Then, the position of the bottom of the sea mobile body of the sea mobile body is calculated from the sea bottom depth of the sea mobile body retrieved and output by the sea mobile body bottom depth database means and the sea surface height near the subsurface entity. The future position of the maritime mobile object is predicted and calculated from the current position, direction and speed of the maritime mobile object, and whether the bottom of any of the marine mobile objects approaches the submarine entity. It is characterized by determining whether or not.

A marine mobile object monitoring system and monitoring method in the vicinity of a submarine entity according to the present invention is a marine mobile object monitoring system installed in the vicinity of a submarine entity, and is a ship automatic identification established by the International Maritime Organization IMO. System AIS is transmitted by the TDMA (Time Division Multiple Access) method or the DSC (Digital Selective Call) method by the VHF band radio waves from the AIS maritime mobile device mounted on the marine mobile unit that has specifications conforming to the international standard of AIS. MMSI number that is a number that identifies a transmitting-side maritime mobile radio station, or IMO number that is a number that identifies a transmitting-side maritime mobile body, the current location of the transmitting-side maritime mobile body, An AIS receiving means for receiving AIS information including the current moving direction of the moving body and the current moving speed of the transmitting-side maritime moving body, and an electronic computer, Alternatively, the sea movement storing the data set of the IMO number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number or the IMO number. Body bottom depth data storage unit and data to search and output corresponding sea mobile body bottom depth related value from sea mobile body bottom depth data storage unit when MMSI number or IMO number is input as search input A marine mobile body bottom depth database means having a search unit, a sea level height output means for outputting a sea surface height value near an undersea entity based on calculation or measurement, and a discrimination means comprising an electronic computer In the sea mobile body bottom depth data storage section, the sea level at the time of full loading, which is the state where the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the sea mobile body. Since the a line tangent to the moving body side unit waterline, is constructed as the value of the depth it is full when the draft depth d _max of at least the height position of the bottom surface of the sea mobile during the full is stored, The discriminating means inputs the MMSI number or IMO number included in the AIS information received from the radio wave from the marine mobile body existing in the sea area near the submarine entity to the marine mobile body bottom depth database means as the search input. Based on the seafloor bottom depth-related values retrieved and output by the seafloor bottom depth database means and the sea level height near the subsurface objects, the seafloor bottom depth database means retrieved and output A value obtained by multiplying the full draft depth d _max by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the bottom depth of the sea mobile body of the sea mobile body. Naval movement Calculate the position of the bottom of the body, predict and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body, and move one of the sea mobile bodies to the seafloor. It has the advantage that it can be determined whether or not the body bottom is approaching. In particular, in order to cope with the recent increase in size and speed of marine mobile bodies such as ships, the marine mobile body monitoring system and monitoring method in the vicinity of the submarine existence according to the present invention are important. In addition, this system and method is similar to the act of terrorism on land structures by aircraft that occurred in New York. It is also effective as a security measure to monitor and prevent acts of terrorism such as the occurrence of terrorism.

The embodiment described below is a marine mobile monitoring system installed in the vicinity of a submarine entity, and has specifications conforming to the international standard of the automatic vessel identification system AIS established by the International Maritime Organization IMO. Information transmitted from an AIS maritime mobile device mounted on a marine mobile device by means of a THF (Time Division Multiple Access) method or a DSC (Digital Selective Call) method using radio waves in the VHF band. MMSI number that is a number that identifies a station or IMO number that is a number that identifies a transmitting-side maritime mobile unit, the current position of the transmitting-side maritime mobile unit, the current moving direction of the transmitting-side maritime mobile unit, and the transmitting-side maritime unit An AIS receiving means for receiving AIS information including the current moving speed of the mobile body, an electronic computer, a data set of MMSI numbers or IMO numbers, and an MMSI number Is a marine mobile body bottom depth data storage unit for storing a data set of sea mobile body bottom depth related values related to the sea mobile body bottom depth of the marine mobile body specified by the IMO number; When a MMSI number or an IMO number is input as an input, a marine mobile body bottom depth having a data search unit that retrieves and outputs a corresponding sea mobile body bottom depth related value from the sea mobile body bottom depth data storage unit A sea surface moving body bottom depth data storage unit comprising database means, sea surface height output means for outputting a sea surface height value near a subsurface entity based on calculation or measurement, and a discrimination means comprising an electronic computer In the sea mobile body bottom depth-related value of the sea mobile body, from the draft line, which is the line where the sea surface at the time of full load, which is the state where the passenger or the load is loaded to the maximum, is the line in contact with the side of the sea mobile body, Since the value of the depth is full when the draft depth d _max of at least the height position of the bottom surface of the sea mobile during the mounting is configured to be stored, the discrimination means, in waters near the subsea entity The MMSI number or IMO number included in the AIS information received from the radio waves from the existing ocean mobile body is input to the ocean mobile body bottom depth database means as the search input, and the ocean mobile body bottom depth database means searches. and maritime mobile bottom depth related value output Te, 0.1 from the sea surface height in the vicinity of the subsea entity, the full time of the draft depth d _max of maritime mobile bottom depth database means and output by searching The value obtained by multiplying the correction coefficient α, which is an appropriate value in the range of 10.0, is adopted as the depth of the bottom of the sea mobile body, and the position of the bottom of the sea mobile body is calculated. Current state of mobile Predicting and calculating the future position of the maritime mobile body from the position, moving direction, and moving speed, it is possible to determine whether the sea mobile body bottom of any sea mobile body is approaching an undersea entity, This is the best mode for realizing the present invention.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a marine mobile monitoring system according to a first embodiment of the present invention.

  The offshore mobile object monitoring system 101 is installed in a department that monitors and controls offshore mobile objects in the vicinity of submarine entities, for example, in the vicinity of submarine entities. Submarine entities include the sea floor, submarine cables, submerged tunnels, subsea refueling pipes, and the like. As shown in FIG. 1, the sea mobile body monitoring system 101 includes a controller 1, an AIS receiver 2, a sea mobile body bottom depth database device 3, a sea surface height output device 4, an operation unit 11, and a display. A portion 12 is provided.

  Among the above components, the controller 1 is not shown in its internal configuration, but an input / output interface, a CPU (Central Processing Unit), and a ROM (Read Only Memory) are read-only. Memory), RAM (Random Access Memory), and the like. With this configuration, the controller 1 constitutes a computer (electronic computer) as a whole.

  Of the above-described components of the controller 1, the input / output interface is a part to which a signal sent from the outside of the CPU to the CPU is input and a part for outputting a signal from the CPU to the outside. The CPU is a part that performs various operations and program execution and sends control signals to the respective units for control. The ROM is a part that stores a control program for controlling the CPU, various data used by the CPU, and the like. A semiconductor memory or the like is used as the ROM. The RAM is a part for temporarily storing data or the like being calculated by the CPU. A semiconductor memory or the like is used as the RAM.

  The operation unit 11 includes various switches, operation buttons, operation dials, a keyboard, a pointing device, and the like, or an appropriate combination thereof, and inputs operation commands and data to the controller 1. It is a part to do. The pointing device is a device that displays an arrow-like figure (pointer) on the screen of the display unit 12, can move the pointer by an operation, and can be selected by clicking an arbitrary position on the screen. Yes, in addition to mice, there are pad-shaped objects and rotatable ball-shaped objects. The operation command and data input to the operation unit 11 are sent to the CPU in the controller 1 through the input / output interface.

  The display unit 12 includes a cathode ray tube, a liquid crystal display, a plasma display, or the like, and displays data such as images and characters output from the CPU in the controller 1 via the input / output interface on the screen as images and characters. Is done. The output data can be further printed on paper by a printer (not shown) and output.

  Next, prior to the description of the configuration and operation of the AIS receiver 2, the AIS will be described in detail.

  AIS is an abbreviation for an automatic identification system (Automatic Identification System) established by the International Maritime Organization (IMO), which is an organization of the United Nations. AIS is a system developed in Sweden for the purpose of assisting ship identification (for example, mutual identification of ships) and simplifying information exchange with marine mobiles. AIS is the IMO's “International Convention for the Safety of Life at Sea (SOLAS Convention)”. All passenger ships stipulated in the SOLAS Convention, more than 300 tons for international voyages, more than 500 tons for domestic voyages Is required to be installed on a cargo ship.

  The AIS is a system in which an AIS maritime mobile unit mounting apparatus 201 having specifications conforming to international standards as shown in FIG. 3 is installed in each marine mobile unit and wireless communication is performed between the marine mobile units. The frequency band of the radio wave used is a 150 MHz band VHF. Since conventional marine mobile radars use high frequencies, radio waves are attenuated in fog, rain, and island shadows, and the detection capability is reduced, causing safety problems. It was decided to use a low VHF charging wave. By using the VHF charging wave, there is almost no attenuation of the radio wave due to fog or rain, and even if it is an island shadow, it can be reached by refracting the radio wave. For this reason, in AIS, communication is possible even at a distance of about 20 to 30 nautical miles (40 to 55 km).

  As shown in FIG. 3, the AIS maritime mobile unit mounting apparatus 201 includes an AIS transponder 56, an operation unit 61, a display unit 62, a gyrocompass 63, a second GPS receiving unit 64, and a GPS antenna A13. Has been. Note that the AIS transponder 56, the operation unit 61, and the display unit 62 may be configured as one device built in one case.

  The AIS transponder 56 includes a VHF antenna A11, a GPS antenna A12, an antenna switching unit 50, an AIS receiving unit 51, an AIS transmitting unit 55, an AIS control unit 52, and a first GPS receiving unit 53. Yes.

  In the above description, the AIS control unit 52 is not shown in its internal configuration, but includes an input / output interface, a CPU (Central Processing Unit), a ROM (Read Only Memory), and a read only memory. RAM (Random Access Memory). With such a configuration, the AIS control unit 52 constitutes a computer (electronic computer) as a whole.

  Of the above-described components of the AIS control unit 52, the input / output interface is a part to which a signal sent from the outside of the CPU to the CPU is input, and for outputting a signal from the CPU to the outside. Part. The CPU is a part that performs various operations and program execution and sends control signals to the respective units for control. The ROM is a part that stores a control program for controlling the CPU, various data used by the CPU, and the like. A semiconductor memory or the like is used as the ROM. The RAM is a part for temporarily storing data or the like being calculated by the CPU. A semiconductor memory or the like is used as the RAM.

  The operation unit 61 includes various switches, operation buttons, and the like, and is a part that inputs operation commands and data to the controller 1. The operation command and data input to the operation unit 61 are sent to the CPU in the AIS control unit 52 through the input / output interface.

  The display unit 62 includes a cathode ray tube, a liquid crystal display, a plasma display, or the like. Data such as images and characters output from the CPU in the controller 1 through the input / output interface is displayed on the screen as images and characters. Is done. The output data can be further printed on paper by a printer (not shown) and output.

  In the above-described AIS maritime mobile unit mounting apparatus 201, when transmission is performed, information to be transmitted is sent from the AIS control unit 52 to the AIS transmission unit 55, the antenna switching unit 50 is switched to the transmission side, and the VHF antenna A11 Transmitted as radio waves. In addition, in the AIS maritime mobile unit mounting apparatus 201 described above, when the reception is performed, when the antenna switching unit 50 is switched to the reception side, the radio wave captured by the VHF antenna A11 is received by the AIS receiving unit 51. The extracted information is sent to the AIS control unit 52.

  As a transmission / reception method of wireless communication in the AIS maritime mobile unit mounting apparatus 201, two types of methods are used. One is a Time Multiple Access (TDMA) system, which uses two dedicated channels (CH88B) of 161.975 MHz dedicated channel (CH87B) and 162.025 MHz dedicated channel. ing. The other is a Digital Selective Calling (DSC) system, which uses a dedicated channel (CH70) of 156.525 MHz.

  Next, a TDMA (Time Division Multiple Access) system will be described in detail with reference to FIG. A TDMA system used in AIS uses a protocol called SOTDMA (Self Organized TDMA). In this method, first, 1 minute is divided into 2250 slots. In FIG. 4, one square shown in the upper part represents one slot. The time flows from left to right in FIG.

  As shown in FIG. 4, the offshore mobile unit 501 transmits information as a slot 511A by a radio wave W1. In this slot 511A, own ship information (information such as MMSI number of own ship 501 described later, own ship position, etc.) and reservation information for reserving the next slot (slot to be transmitted next time) 511B, 1 packet is transmitted. This radio wave W1 is received by the other maritime mobile bodies 502 and 503.

  Next, the marine mobile unit 502 transmits the information as the slot 512A using the radio wave W2 so as not to overlap the time of the reserved slot 511B reserved by the marine mobile unit 501. In this slot 512A, own ship information (MMSI number of own ship 502 described later, own ship position, etc. information) and reservation information for reserving the next slot (slot to be transmitted next time) 512B, 1 packet is transmitted. This radio wave W2 is received by other maritime mobile bodies 501 and 503.

  Also, the marine mobile unit 503 avoids both the reserved slot 511B reserved by the marine mobile unit 501 and the reserved slot 512B reserved by the marine mobile unit 502 so as not to overlap, and the radio wave W3 sets the information as the slot 513A. Send. In this slot 513A, own ship information (MMSI number of own ship 503 to be described later, information on own ship position, etc.) and reservation information for reserving the next slot (slot to be transmitted next time) 513B, 1 packet is transmitted. This radio wave W3 is received by other maritime mobile bodies 501 and 502.

  A method of performing communication while avoiding overlapping slots by repeating such a procedure one after another is a protocol called SOTDMA (Self Organized TDMA).

  The digital selective calling (DSC) method, which is another communication method, is not shown, but the time is divided in the same manner as described above, and bursts (intermittently) within the time zone assigned to the own station. A simple information signal).

  Each slot divided into 2250 per minute is composed of 256 bits, of which 168 bits are used for information (data). Hereinafter, this information (data) is referred to as “AIS information”. The AIS information includes static information, dynamic information, navigation related information, and other information.

  The static information includes information such as an IMO number (an international identification number that identifies a ship on the transmission side), an MMSI number, a name of a sea mobile body, a type of sea mobile body, a ship length, and a ship width. Here, the MMSI number is an abbreviation for Maritime Mobile Services Identifiers, and is an individual ITU (International Telecommunication Union) assigned to a radio station (maritime mobile radio station) on the transmitting side mobile station. This is an identification number, and the transmitting side offshore mobile radio station is specified by this MMSI number. In Japan's radio law, it is called “number for identifying maritime mobile services”. Alternatively, it is also called “ocean mobile service identification symbol”. This MMSI number is also used for VHF radios of marine mobile radio stations, GDMSS (Global Maritime Distress and Safety System) communication devices, and the like. Since there is only one radio station (maritime mobile radio station) installed in the marine mobile unit for the marine mobile unit, the MMSI number is specified by the MMSI number by specifying the transmitter marine mobile radio station. The marine mobile unit on which the marine mobile radio station (marine mobile radio station) is mounted is identified on a one-to-one basis.

  The dynamic information includes own ship position (latitude, longitude), world standard time, ground course, ground speed (moving speed), heading, turning rate, voyage status (navigation, berthing, etc.) Contains information. The navigation-related information includes information such as drafts, loads, and destinations. Other information is information such as safety-related messages.

  In addition, the update time of these pieces of information is every 6 minutes or when requested for static information. As for dynamic information, when the boat speed is 0-14 knots (about 0-26 km / hour), every 10 seconds, and when the boat speed is 14-23 knots (about 26-43 km / hour), it is 6 seconds. Every 2 seconds when the boat speed is 23 knots (about 43 km / hour) or more.

  In the AIS maritime mobile unit mounting apparatus 201 shown in FIG. 3, the first GPS receiving unit 53 in the AIS transponder 56 detects the current time in the world standard time from the radio wave from the GPS artificial satellite captured by the GPS antenna A12. GPS artificial satellites are a plurality of artificial satellites existing on geostationary orbits around the earth, and transmit data relating to the three-dimensional position coordinates of the earth at the world standard time. Information on the current time in world standard time detected by the first GPS receiver 53 is sent to the AIS controller 52. The AIS control unit 52 uses the current time information of the world standard time as the time reference signal of the TDMA and the time of the world standard time of the dynamic information of the AIS information.

  In addition, the second GPS receiver 64 outside the AIS transponder 56 detects data related to the three-dimensional position coordinates of the earth from the radio wave from the GPS artificial satellite captured by the GPS antenna A13. Information on the data regarding the three-dimensional position coordinates of the earth detected by the second GPS receiver 64 is sent to the AIS controller 52. The AIS control unit 52 uses the information on the data regarding the three-dimensional position coordinates of the earth to determine the ship position (latitude, longitude) of the dynamic information of the AIS information, the ship's ground course, and the ship's ground speed (movement speed). ) Information.

  The gyrocompass 63 is a sensor that detects inertial force and angular velocity, and sends the detected inertial force and angular velocity to the AIS control unit 52. The AIS control unit 52 generates the heading and turning rate information of the dynamic information of the AIS information described above based on the inertial force and angular velocity data. The AIS control unit 52 detects the moving direction of the ship from the heading data and the above-described ground course data.

  The AIS receiving unit 51 includes two TDMA receiving units (for two channels) and one DSC receiving unit (for one channel). The AIS receiving unit 51 detects AIS information from VHF radio waves from other maritime mobile bodies captured by the VHF antenna A11, and detects the MMSI number of the maritime mobile body and the current position (latitude and longitude) of the maritime mobile body. The current moving direction of the maritime mobile object, the current moving speed of the maritime mobile object, and the like are detected. The AIS information detected by the AIS receiving unit 51 is sent to the AIS control unit 52.

  The AIS transmission unit 55 has two TDMA transmission units (for two channels) and one DSC transmission unit (for one channel). The AIS transmission unit 55 receives from the AIS control unit 52 an AIS including the MMSI number of the ship, the current position (latitude, longitude) of the ship, the current ground course of the ship, the current ground speed of the ship, and the like. Information is sent. The AIS transmission unit 55 outputs the AIS information by the TDMA method or the DSC method, the antenna switching unit 50 is switched to the transmission side, and is transmitted as radio waves from the VHF antenna A11 to other maritime mobile units. .

  With such a configuration and communication method, the marine mobile unit equipped with the AIS maritime mobile unit mounting apparatus 201 shown in FIG. 3 performs VHF wireless communication between the other mobile units. The body name, own ship position (latitude, longitude), moving direction, moving speed, etc. can be grasped at time intervals of several seconds to several minutes. Therefore, it is possible to sail safely even at night or in bad weather, even in areas with many islands.

  The AIS receiver 2 in the marine mobile monitoring system 101 shown in FIG. 1 includes only the receiving part in the AIS marine mobile device 201 shown in FIG. That is, the AIS receiving device 2 includes a VHF antenna A1, GPS antennas A2 and A3, an AIS receiving unit 21, an AIS control unit 22, a first GPS receiving unit 23, and a second GPS receiving unit 24.

  Here, the VHF antenna A1 has the same configuration and operation as the VHF antenna A11 in FIG. The GPS antenna A2 has the same configuration and operation as the GPS antenna A12 in FIG. The GPS antenna A3 has the same configuration and operation as the GPS antenna A13 in FIG. In addition, the AIS receiving unit 21 has the same configuration and operation as the AIS receiving unit 51 in FIG. The first GPS receiver 23 has the same configuration and operation as the first GPS receiver 53 in FIG. The second GPS receiver 24 has the same configuration and operation as the second GPS receiver 64 in FIG. The AIS control unit 22 has substantially the same configuration and operation as the AIS control unit 52 in FIG. 3, the AIS controller 52 receives the signal from the operation unit 61 and outputs the image signal to the display unit 62. However, the AIS maritime mobile unit mounting apparatus 201 in FIG. The body monitoring system 101 is different in that the controller 1, which is another computer, receives signals from the operation unit 11 and outputs image signals to the display unit 12.

  Accordingly, in the AIS receiver 2 of the marine mobile monitoring system 101, the first GPS receiver 23 detects the current time in the world standard time from the radio wave from the GPS artificial satellite captured by the GPS antenna A2. Information on the current time in world standard time detected by the first GPS receiver 23 is sent to the AIS controller 22. The AIS control unit 22 uses the current time information of the world standard time as the time reference signal of the TDMA and the time of the world standard time of the dynamic information of the AIS information.

  In addition, the second GPS receiving unit 24 detects data relating to the three-dimensional position coordinates of the earth from the radio wave from the GPS artificial satellite captured by the GPS antenna A3. Information on the data regarding the three-dimensional position coordinates of the earth detected by the second GPS receiver 24 is sent to the AIS controller 22. The AIS control unit 22 generates information on the position (latitude, longitude) of the land station on which the AIS receiver 2 of the marine mobile monitoring system 101 is installed based on the data information on the three-dimensional position coordinates of the earth. And sent to the controller 1.

  The AIS receiving unit 21 includes two TDMA receiving units (for two channels) and one DSC receiving unit (for one channel). The AIS receiving unit 21 detects AIS information from the VHF radio wave from the maritime mobile body captured by the VHF antenna A1, and the MMSI number of the maritime mobile body, the current position (latitude and longitude) of the maritime mobile body, The current moving direction of the maritime mobile object and the current moving speed of the maritime mobile object are detected. The AIS information detected by the AIS receiving unit 21 is sent to the AIS control unit 22. The AIS control unit 22 sends this AIS information to the controller 1. Here, the AIS receiving apparatus 2 corresponds to the AIS receiving means in the claims.

The marine mobile body monitoring system 101 shown in FIG. 1 is provided with an ocean mobile body bottom depth database device 3. As shown in FIG. 1, the ocean mobile body bottom depth database device 3 includes an ocean mobile body bottom depth data storage unit 31 and a data search unit 32. The sea mobile body bottom depth data storage unit 31 is constituted by a hard disk device or the like, and can store data. The maritime mobile bottom depth data storing unit 31, K number of data sets of MMSI number _{(N 1, N 2, ...} N K) and, full time draft depth of the sea mobile identified by MMSI number (In the depth from the draft line, which is the line where the sea surface at the time of full load, in which the passenger or the load is loaded to the maximum, is in contact with the side of the sea mobile body to the lowest height position of the bottom surface of the sea mobile body at the time of the full load. 5 refers to the maximum value of the draft height d (the height between the lowest height position 308 of the bottom surface of the marine mobile body and the draft line 307 (line where the sea surface is in contact with the side of the marine mobile body)). K data sets (d _max1 , d _max2 ,... D _maxk ) of the full load draft depth is referred to as d _max ) are stored in association with each other. Here, K is an integer of 1 or more. For example, if the unit of the full-time draft depth d _max is meters,
“N ₁ ” → “d _max1 = 9.1”
“N ₂ ” → “d _max2 = 8.0”
...
“N _K ” → “d _maxK = 12.5”
It is like this. Here, the full draft depth d _max corresponds to “a value related to the depth of the bottom of the sea mobile body” in the claims.

Among these data, the MMSI number, which is an international identification number for identifying a marine mobile radio station, can be obtained from documents related to marine mobile radio stations of the International Telecommunications Union (ITU). In addition, an IMO number, which is an international identification number for identifying a ship, can be obtained from maritime mobile related materials of the International Maritime Organization (IMO). In addition, the numerical value of the full time of draft depth d _max can be obtained from the data of various international maritime mobile relationship that has been published. Then, they, by storing as data of "table" that associates with each other, as described above, the data set of the MMSI number, associated data set of full time draft depth d _max "MMSI number d _max A "data set" can be created. In addition, not only a database system but AIS reception information may be utilized as it is, and the draft information contained in AIS reception information may be used.

  Although the internal structure of the data search unit 32 is not shown, an input / output interface, a CPU (Central Processing Unit), a ROM (Read Only Memory), RAM (Random Access Memory). With this configuration, the data search unit 32 forms a computer (electronic computer) as a whole.

  Of the above-described components of the data search unit 32, the input / output interface is a part to which a signal sent from the outside of the CPU to the CPU is input and a part for outputting a signal from the CPU to the outside. is there. The CPU is a part that performs various operations and program execution and sends control signals to the respective units for control. The ROM is a part that stores a control program for controlling the CPU, various data used by the CPU, and the like. A semiconductor memory or the like is used as the ROM. The RAM is a part for temporarily storing data or the like being calculated by the CPU. A semiconductor memory or the like is used as the RAM.

  When the MMSI number is input as a search input from the CPU (not shown) of the controller 1, the CPU (not shown) of the data search unit 32 stores the data in the oceanic mobile body bottom depth data storage unit 31. The depth of the bottom of the sea moving body corresponding to the MMSI number is searched for and output to the CPU (not shown) of the controller 1. Here, the sea mobile body bottom depth database device 3 corresponds to the sea mobile body bottom depth database means in the claims.

  In addition, the sea level monitoring device 101 shown in FIG. Although the internal structure of the sea level output device 4 is not shown, an input / output interface, a CPU (Central Processing Unit), a ROM (Read Only Memory), RAM (Random Access Memory). With such a configuration, the sea level output device 4 constitutes a computer (electronic computer) as a whole.

  Of the above-described components of the sea level height output device 4, the input / output interface is a part to which a signal sent to the CPU from the outside of the CPU is input, and for outputting a signal from the CPU to the outside Part. The CPU is a part that performs various operations and program execution and sends control signals to the respective units for control. The ROM is a part that stores a control program for controlling the CPU, various data used by the CPU, and the like. A semiconductor memory or the like is used as the ROM. The RAM is a part for temporarily storing data or the like being calculated by the CPU. A semiconductor memory or the like is used as the RAM.

  The CPU (not shown) of the sea level height output device 4 is based on the sun, lunar attraction, wind, and atmospheric pressure, and the sea level height value near the submarine entity monitored by the marine mobile monitoring system 101. Is output to the CPU (not shown) of the controller 1 at predetermined time intervals. Here, the sea level height output device 4 corresponds to the sea level height output means in the claims.

  Next, the operation of the marine mobile monitoring system 101 will be described with reference to FIGS. FIG. 2 is a plan view of the vicinity of the subsea entity 302 seen from above. In FIG. 2, reference numeral 302 denotes an underwater entity, P1 and P2 denote end portions of the undersea entity, 400 denotes an ocean area, and 401 to 403 denote offshore moving bodies that are navigating in the vicinity.

  The CPU (not shown) of the controller 1 of the marine mobile monitoring system 101 is connected to the location where the apparatus of the marine mobile monitoring system 101 is installed based on the AIS information sent from the AIS receiver 2 (under the sea level). As for the marine mobile bodies 401 to 403 that navigate the sea area 400 in the vicinity of the land 302 near the existence object 302, the MMSI number, the current position (latitude, longitude) of the marine mobile body, and the current moving direction of the marine mobile body The current moving speeds V1 to V3 of the offshore moving body are detected at intervals of several seconds to several minutes. These values are calculated using the own ship position (latitude, longitude), time in world standard time, ground course, ground speed (moving speed), heading, turn rate among the dynamic information of the AIS information described above. The As a result, the CPU (not shown) of the controller 1 of the offshore mobile body monitoring system 101 calculates the future positions of the offshore mobile bodies 401 to 403, for example, positions after 5 minutes, 10 minutes, and the like by prediction calculation. be able to. For example, in FIG. 2, the CPU (not shown) of the controller 1 of the offshore moving body monitoring system 101 detects that the offshore moving body 401 reaches the position of 401 a after 30 minutes, that is, directly above the underwater object. To do.

Next, the CPU (not shown) of the controller 1 of the offshore mobile monitoring system 101 has already sent the contents of the AIS information received from the AIS receiver 2, and the controller 1 RAM (not shown), etc. The MMSI number (for example, “123456000”) of the marine mobile 401 that is temporarily stored in is read out. Next, the CPU (not shown) of the controller 1 of the offshore mobile body monitoring system 101 sends the MMSI to the CPU (not shown) of the offshore mobile body bottom depth data storage unit 31 of the offshore mobile body bottom depth database device 3. The number “123456000” is input, and the value of the full-time draft depth d _max corresponding to the MMSI number “123456000” is searched from the data set stored in the oceanic moving body bottom depth data storage unit 31. As a result, the CPU (not shown) of the marine mobile body bottom depth data storage unit 31 of the marine mobile body bottom depth database device 3 searches the data in the marine mobile body bottom depth data storage unit 31. , The full-load draft depth d _max corresponding to the MMSI number “123456000” corresponding to the MMSI number “123456000” (for example, d _max = 10.8 meters) is retrieved, and the CPU of the controller 1 (not shown) Output).

At this time, the CPU (not shown) of the controller 1 of the offshore mobile body monitoring system 101 uses the value of the full-time draft depth d _max sent from the offshore mobile body bottom depth database device 3.

α × d _max (1)

Perform the operation. Then, the value obtained by the calculation of the above equation (1) is adopted as the bottom of the sea mobile body. That is, α × d _max in the above equation (1) is used as the value of the draft height d shown in FIG. In the above formula (1), α is a correction coefficient, and an appropriate numerical value in the range of 0.1 to 10.0 is used.

The reason why the correction coefficient α is used as described above will be described below. As described above, the data stored in the oceanic mobile body bottom depth data storage unit 31 is the full-time draft depth d _{max shown} in FIG. However, usually, a marine mobile body often carries passengers or loads that are larger than the full load. When the sea mobile body is loaded more than the full load state, the value d in FIG. 5 is larger than the full load draft depth d _max . Therefore, as the sea mobile body bottom depth (d in FIG. 5) when trying to determine whether the sea mobile body bottom 308 of the sea mobile body 304 approaches the top surface or the apex of the submarine existence object 302, If the draft depth d _max at the time of full load is used, a value smaller than the depth of the bottom of the sea moving body in the actual situation of the sea moving body (d in FIG. 5) is adopted, which is not appropriate. Therefore, the full-time draft depth d _max is multiplied by a correction coefficient larger than 1.0 to approximate the actual draft height d, and the value of the sea mobile bottom depth (d in FIG. 5) closer to reality. To seek. The value range of 0.1 to 10.0 for the correction coefficient α is considered to be appropriate in terms of the specifications of the marine mobile unit, the current state of operation of the marine mobile unit and the concept of safety. . In the case where the correction coefficient α = 1.0, for example, it is considered that the loaded weight of the offshore moving body corresponds to a full load state. In addition, as a marine mobile body, in the case of a ship, when it is not always in a full draft state, or when one of the bow or stern is deep, or the sea mobile body navigates above an underwater entity. Therefore, it is considered that the appropriate range of the value of the correction coefficient α is about 0.1 to 10.0.

In the calculation of the above equation (1), the correction coefficient α may always be calculated with α = 10.0. In this way, the largest value of the draft height d shown in FIG. 5 is 10.0 × d _max, and the bottom of the offshore mobile object is below the sea level near the undersea object. The deepest (the safest side) value can be used as the sea mobile body bottom depth d used to determine whether or not the top surface or apex of the entity is approached.

As described above, the static information of the AIS information described above includes draft information. Therefore, unlike the above embodiment, as d _max, the information of the draft of the static information of AIS information may be configured for use.

  Next, the CPU (not shown) of the controller 1 of the offshore mobile object monitoring system 101 has already sent the calculation result from the sea level output device 4 and temporarily sends it to the RAM (not shown) of the controller 1. The stored value of the height of the sea surface S (see FIG. 5) of the sea area 400 is read out. As a result, if the current sea level is S1 (see FIG. 5) and is lower by Δh than in the case of S, even if the sea mobile body bottom depth is d in FIG. Is further lowered by Δh, and the bottom part 308 of the sea moving body is further approaching the upper surface or the top of the submarine existence object 308, which is in a more dangerous state.

  Further, the altitude (depth) position of the upper surface or vertex of the subsurface existence object 302 is an immobile position unlike the sea surface, and the three-dimensional coordinates are known. The three-dimensional coordinates of the upper surface or the apex of the undersea object 302 are calculated in advance and stored in the RAM (not shown) or the ROM (not shown) of the controller 1 of the offshore mobile object monitoring system 101.

  Next, the CPU (not shown) of the controller 1 of the maritime mobile monitoring system 101 determines the position in the height direction of the sea mobile bottom 308 (see FIG. 5) of the maritime mobile at the future position 401a in FIG. Is obtained by calculation from the bottom depth d of the sea mobile body obtained by the calculation of the above equation (1) and the current height of the sea level S from the sea level height output device 4.

  Then, the CPU (not shown) of the controller 1 of the offshore mobile body monitoring system 101 has the top surface or the apex of the subsea entity 302 just below the offshore mobile body bottom 308 of this offshore mobile body at the future position 401a in FIG. Are read from the RAM and the two are compared.

  As a result, if the position of the marine mobile body bottom 308 is below the submarine entity 302, the marine mobile body bottom 308 will contact or collide with the submarine entity 302 at the future position 401a. In such a case, the CPU (not shown) of the controller 1 sends an image signal to the display unit 12 to display the danger on the screen, and notifies the operator of the maritime mobile monitoring system 101. The operator of the marine mobile monitoring system 101 takes measures such as notifying the marine mobile side of the danger through another communication line and issuing a command to change the course of the marine mobile unit 401.

  Further, as a result of the above comparison, when the position of the bottom of the sea moving body 308 is above the subsurface existence object 302 but approaches, the CPU (not shown) of the controller 1 displays on the display unit 12. An image signal may be sent to display on the screen that the ocean mobile body bottom 308 is approaching the undersea object 302 and notify the operator of the ocean mobile body monitoring system 101. The operator of the offshore mobile monitoring system 101 notifies the offshore mobile body side and the like that the offshore mobile body bottom portion 308 is approaching the submarine existence object 302 through another communication line or the like.

  In the above description, the ship in the ship automatic identification system AIS is not limited to a ship equipped with an AIS, but includes an offshore structure equipped with an AIS. The CPU (not shown) of the controller 1 of the maritime mobile object monitoring system 101 corresponds to the determining means in the claims.

  In addition, this invention is not limited to an above-described Example. The above-described embodiment is an exemplification, and any device having substantially the same configuration as the technical idea described in the claims of the present invention and having the same function and effect can be used. It is included in the technical scope of the present invention.

  The sea level height output means is not limited to the one that outputs the sea level value by calculation, but other configurations, for example, a device that measures the sea level height in the sea area near the subsurface entity, for example, a tide gauge Alternatively, a tide gauge or the like may be installed to measure the value of the sea level, and this value may be output to the discriminating means (the CPU (not shown in the controller 1 of the marine mobile monitoring system 101)). In this case, the tide gauge, the tide gauge, etc. correspond to the sea level measurement means in the claims.

  Further, unlike the above-described embodiment, it may be a marine mobile monitoring system having an AIS receiving apparatus having a configuration in which the GPS antenna A3 and the second GPS receiving unit 24 are not provided. In this case, the first GPS receiving unit 23 detects data relating to the earth's three-dimensional position coordinates from the radio wave from the GPS artificial satellite captured by the GPS antenna A2, and this information is obtained based on the data relating to the earth's three-dimensional position coordinates. Information on the position (latitude, longitude) of the land station where the AIS receiver of the marine mobile monitoring system is installed is generated and sent to the controller 1. The information on the location (latitude, longitude) of the land station where the AIS receiver of the marine mobile monitoring system is installed is detected by other GPS receivers when the AIS receiver is installed. Position (latitude, longitude) data may be stored in a ROM or the like in the controller 1, and this data may be used as appropriate.

  Unlike the above embodiment, the controller 1 in FIG. 1, the seafloor bottom depth database device 3, the sea level height output device 4, the operation unit 11, and the display unit 12 may be a single computer, for example, You may comprise as a personal computer or a work station. In that case, the CPU of the controller 1 fulfills the function of the CPU of the data search unit 32 in the ocean mobile body bottom depth database device 3 in the above embodiment. The CPU of the controller 1 also functions as the CPU of the sea level output device 4 in the above embodiment. In that case, the sea mobile body bottom depth data storage unit 31 in the sea mobile body bottom depth database device 3 in the above embodiment is a storage device (for example, a hard disk device) in the controller 1.

  Unlike the above embodiment, the marine mobile monitoring system 101 includes an external city output terminal 13, and outputs from the controller 1 to an external device, for example, a communication line to the marine mobile, and control to the marine mobile. You may comprise so that it can output to an apparatus etc.

  Further, unlike the above embodiment, the sea mobile body bottom depth data storage unit 31 stores the value obtained by the calculation of the above equation (1) as the sea mobile body bottom depth d corresponding to the MMSI number. -You may make it store. In this case, the position in the height direction of the sea mobile body bottom 308 (see FIG. 5) of the sea mobile body at the future position 401a in FIG. 2 is retrieved from the sea mobile body bottom depth data storage unit 31. It is calculated | required by calculation from the height d of the sea mobile body bottom part (calculation result of the above formula (1)) and the current sea level S from the sea level height output device 4. Then, the CPU (not shown) of the controller 1 of the offshore mobile body monitoring system 101 reads the height of the submarine entity 302 immediately below the offshore mobile body bottom 308 at the future position 401a in FIG. By comparing the two, it is determined whether or not the ocean moving body bottom portion 308 of the ocean moving object approaches the upper surface or the apex of the subsea entity. In this method, the value of the sea mobile body bottom depth d calculated by the calculation of the above equation (1) and stored in the sea mobile body bottom depth data storage unit 31 is “the sea mobile body in the claims”. This corresponds to the “bottom depth related value”.

Alternatively, in the above-described sea mobile object monitoring method near an undersea entity, the value of the sea mobile body bottom depth d stored and stored in the sea mobile body bottom depth data storage unit 31 in correspondence with the MMSI number is: You may employ | adopt the result calculated by the following Formula (2).

10.0 × d _max (2)

That is, in this method, by adopting 10.0 × d _max as the value of the draft height d shown in FIG. 5, the bottom of the sea mobile body near the sea surface entity is the bottom of the sea surface entity. The highest value can be used as the bottom depth d of the sea moving body used for determining whether or not the top surface or the apex is approached, and the determination on the safest side can be performed. In this system, the value of the sea mobile body bottom depth d calculated by the calculation of the above equation (2) and stored in the sea mobile body bottom depth data storage unit 31 is “the sea mobile body in the claims”. This corresponds to the “bottom depth related value”.

Further, in the ocean moving body bottom depth data storage unit 31, the above-described d _max , the value obtained by the above equation (1) or the value obtained by the above equation (2) is moved to the ocean. You may make it memorize | store and store as body bottom part depth d corresponding to an IMO number. In this case, the position in the height direction of the sea mobile body bottom 308 (see FIG. 5) of the sea mobile body at the future position 401a in FIG. 2 is retrieved from the sea mobile body bottom depth data storage unit 31. The bottom depth d of the sea moving body (the above-mentioned _max , or the value obtained by the calculation of the above formula (1) or the value obtained by the calculation of the above formula (2)) and the current level from the sea level height output device 4 It is calculated from the height of the sea level S. Then, the CPU (not shown) of the controller 1 of the offshore mobile monitoring system 101 determines the height of the subsurface existence object 302 immediately below the offshore mobile body bottom 308 of this offshore mobile body at the future position 401a in FIG. It reads from RAM, compares both, and discriminate | determines whether the sea mobile body bottom part 308 of a sea mobile body approaches the upper surface or top of a subsurface existence thing. In this method, the above-mentioned _max , the value obtained by the calculation of the above equation (1), or the value obtained by the calculation of the above equation (2) is stored in the ocean moving body bottom depth data storage unit 31. The value of the moving body bottom portion depth d corresponds to the “ocean moving body bottom portion depth related value” in the claims.

  INDUSTRIAL APPLICABILITY The present invention can be manufactured in the manufacturing industry of electronic equipment, communication equipment, etc. that manufactures marine mobile monitoring devices and marine mobile control systems, and can be used in these industries.

It is a block diagram which shows the structure of the sea mobile body monitoring system which is 1st Example of this invention. It is a figure explaining the effect | action of the sea mobile body monitoring system which is 1st Example of this invention. It is a block diagram which shows the structure of the AIS maritime mobile body side mounting apparatus used for ship automatic identification system AIS. It is a figure explaining the communication system TDMA in the marine mobile body side mounting apparatus of the ship automatic identification system AIS. It is a figure explaining the problem in a submarine existence thing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Controller 2 AIS receiving device 3 Sea bottom moving body depth database apparatus 4 Sea surface height output device 11 Operation part 12 Display part 13 External output terminal 21 AIS receiving part 22 AIS control part 23 1st GPS receiving part 24 2nd GPS receiving part 31 Ocean mobile body depth data storage unit 32 Data search unit 50 Antenna switching unit 51 AIS reception unit 52 AIS control unit 53 First GPS reception unit 55 AIS transmission unit 56 AIS transponder 61 Operation unit 62 Display unit 63 Gyrocompass 64 Second GPS reception Unit 101 Marine Mobile Monitoring System 201 AIS Marine Mobile Side Mounted Device 302 Submarine Objects 304 Marine Mobile 307 Waterline 308 Marine Mobile Bottom 400 Sea Area 401 Marine Mobile 401a Marine Mobile Predicted Position 402, 403 Marine Movement Body 501- 503 Marine mobile units 511A to 513B Slot A1 VHF antenna A2, A3 GPS antenna A11 VHF antenna A12, A13 GPS antenna Δh Sea surface height displacement amount P1, P2 End of sea surface existence S Sea surface S1 Lower sea surface T AIS transponder V1 V3 Moving speed of sea moving body W1-W3 radio wave

Claims (8)

A marine mobile monitoring system installed in the vicinity of an undersea entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or, information transmitted by DSC (Digital Selective Call) method, which is a MMSI number that is a number for identifying the transmitting-side maritime mobile radio station, the current position of the transmitting-side maritime mobile unit, and the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the current moving direction and the current moving speed of the transmitting marine mobile body;
An electronic computer, which stores the data set of the MMSI number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number And when the MMSI number is input as a search input, the corresponding sea mobile body bottom depth related value is retrieved and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
It has a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max , which is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine vehicle at the full load time, is stored.
The discriminating means inputs the MMSI number included in the AIS information received from radio waves from a marine mobile body existing in a sea area near a submarine entity to the marine mobile body bottom depth database means as the search input. The sea mobile body bottom depth database means searches from the sea mobile body bottom depth related value retrieved and output by the sea mobile body bottom depth database means and the sea surface height in the vicinity of the subsea entity. The value obtained by multiplying the draft depth d _max at the full load output by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the sea mobile body bottom depth of the sea mobile body, Calculate the position of the bottom of the maritime mobile body and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body. The sea Maritime mobile object monitoring system near subsea entity, wherein the sea mobile bottom of the body to determine whether to approach. A marine mobile monitoring system installed in the vicinity of an undersea entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or, information transmitted by DSC (Digital Selective Call) method, which is a MMSI number that is a number for identifying the transmitting-side maritime mobile radio station, the current position of the transmitting-side maritime mobile unit, and the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the current moving direction and the current moving speed of the transmitting marine mobile body;
An electronic computer, which stores the data set of the MMSI number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number And when the MMSI number is input as a search input, the corresponding sea mobile body bottom depth related value is retrieved and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
It has a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max that is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine mobile body at the full load time to an appropriate value in the range of 0.1 to 10.0. The value obtained by multiplying the correction coefficient α, which is the value, is stored as the depth of the bottom of the sea mobile body of the sea mobile body,
The discriminating means inputs the MMSI number included in the AIS information received from radio waves from a marine mobile body existing in a sea area near a submarine entity to the marine mobile body bottom depth database means as the search input. Then, the position of the bottom of the sea mobile body of the sea mobile body is calculated from the sea bottom depth of the sea mobile body retrieved and output by the sea mobile body bottom depth database means and the sea surface height near the subsurface entity. The future position of the maritime mobile object is predicted and calculated from the current position, direction and speed of the maritime mobile object, and whether the bottom of any of the marine mobile objects approaches the submarine entity. An offshore moving object monitoring system near an underwater object characterized by determining whether or not it is. A marine mobile monitoring system installed in the vicinity of an undersea entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or information transmitted by a DSC (Digital Selective Call) method, which is an IMO number that identifies the transmitting-side maritime mobile unit, the current location of the transmitting-side maritime mobile unit, and the current location of the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the moving direction and the current moving speed of the transmitting marine mobile body;
Consists of a data set of the IMO number and a data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the IMO number in an electronic computer. When the IMO number is input as a search input, the corresponding ocean mobile body bottom depth data storage unit is searched for and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
It has a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max , which is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine vehicle at the full load time, is stored.
The discriminating means inputs the IMO number included in the AIS information received from the radio wave from the sea mobile body existing in the sea area near the sea surface entity to the sea mobile body bottom depth database means as the search input. The sea mobile body bottom depth database means searches from the sea mobile body bottom depth related value retrieved and output by the sea mobile body bottom depth database means and the sea surface height in the vicinity of the subsea entity. The value obtained by multiplying the draft depth d _max at the full load output by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the sea mobile body bottom depth of the sea mobile body, Calculate the position of the bottom of the maritime mobile body and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body. The sea movement Maritime mobile object monitoring system near subsea entity, wherein the sea mobile bottom of it is determined whether or not approaching. A marine mobile monitoring system installed in the vicinity of an undersea entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or information transmitted by a DSC (Digital Selective Call) method, which is an IMO number that identifies the transmitting-side maritime mobile unit, the current location of the transmitting-side maritime mobile unit, and the current location of the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the moving direction and the current moving speed of the transmitting marine mobile body;
Consists of a data set of the IMO number and a data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the IMO number in an electronic computer. When the IMO number is input as a search input, the corresponding ocean mobile body bottom depth data storage unit is searched for and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
It has a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max that is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine mobile body at the full load time to an appropriate value in the range of 0.1 to 10.0. The value obtained by multiplying the correction coefficient α, which is the value, is stored as the depth of the bottom of the sea mobile body of the sea mobile body,
The discriminating means inputs the IMO number included in the AIS information received from the radio wave from the sea mobile body existing in the sea area near the sea surface entity to the sea mobile body bottom depth database means as the search input. Then, the position of the bottom of the sea mobile body of the sea mobile body is calculated from the sea bottom depth of the sea mobile body retrieved and output by the sea mobile body bottom depth database means and the sea surface height near the subsurface entity. The future position of the maritime mobile object is predicted and calculated from the current position, direction and speed of the maritime mobile object, and whether the bottom of any of the marine mobile objects approaches the submarine entity. An offshore moving object monitoring system near an underwater object characterized by determining whether or not it is. A marine mobile object monitoring method installed in the vicinity of a submarine entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or, information transmitted by DSC (Digital Selective Call) method, which is a MMSI number that is a number for identifying the transmitting-side maritime mobile radio station, the current position of the transmitting-side maritime mobile unit, and the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the current moving direction and the current moving speed of the transmitting marine mobile body;
An electronic computer, which stores the data set of the MMSI number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number And when the MMSI number is input as a search input, the corresponding sea mobile body bottom depth related value is retrieved and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
Using a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max , which is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine vehicle at the full load time, is stored.
The discriminating means inputs the MMSI number included in the AIS information received from radio waves from a marine mobile body existing in a sea area near a submarine entity to the marine mobile body bottom depth database means as the search input. The sea mobile body bottom depth database means searches from the sea mobile body bottom depth related value retrieved and output by the sea mobile body bottom depth database means and the sea surface height in the vicinity of the subsea entity. The value obtained by multiplying the draft depth d _max at the full load output by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the sea mobile body bottom depth of the sea mobile body, Calculate the position of the bottom of the maritime mobile body and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body. The sea Maritime mobile object monitoring method of the vicinity of the subsea entity, wherein the sea mobile bottom of the body to determine whether to approach. A marine mobile object monitoring method installed in the vicinity of a submarine entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or, information transmitted by DSC (Digital Selective Call) method, which is a MMSI number that is a number for identifying the transmitting-side maritime mobile radio station, the current position of the transmitting-side maritime mobile unit, and the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the current moving direction and the current moving speed of the transmitting marine mobile body;
An electronic computer, which stores the data set of the MMSI number and the data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the MMSI number And when the MMSI number is input as a search input, the corresponding sea mobile body bottom depth related value is retrieved and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
Using a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max that is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine mobile body at the full load time to an appropriate value in the range of 0.1 to 10.0. The value obtained by multiplying the correction coefficient α, which is the value, is stored as the depth of the bottom of the sea mobile body of the sea mobile body,
The discriminating means inputs the MMSI number included in the AIS information received from radio waves from a marine mobile body existing in a sea area near a submarine entity to the marine mobile body bottom depth database means as the search input. Then, the position of the bottom of the sea mobile body of the sea mobile body is calculated from the sea bottom depth of the sea mobile body retrieved and output by the sea mobile body bottom depth database means and the sea surface height near the subsurface entity. The future position of the maritime mobile object is predicted and calculated from the current position, direction and speed of the maritime mobile object, and whether the bottom of any of the marine mobile objects approaches the submarine entity. A marine mobile object monitoring method in the vicinity of an undersea entity characterized by determining whether or not. A marine mobile object monitoring method installed in the vicinity of a submarine entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or information transmitted by a DSC (Digital Selective Call) method, which is an IMO number that identifies the transmitting-side maritime mobile unit, the current location of the transmitting-side maritime mobile unit, and the current location of the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the moving direction and the current moving speed of the transmitting marine mobile body;
Consists of a data set of the IMO number and a data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the IMO number in an electronic computer. When the IMO number is input as a search input, the corresponding ocean mobile body bottom depth data storage unit is searched for and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
Using a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max , which is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine vehicle at the full load time, is stored.
The discriminating means inputs the IMO number included in the AIS information received from the radio wave from the sea mobile body existing in the sea area near the sea surface entity to the sea mobile body bottom depth database means as the search input. The sea mobile body bottom depth database means searches from the sea mobile body bottom depth related value retrieved and output by the sea mobile body bottom depth database means and the sea surface height in the vicinity of the subsea entity. The value obtained by multiplying the draft depth d _max at the full load output by a correction coefficient α, which is an appropriate value in the range of 0.1 to 10.0, is adopted as the sea mobile body bottom depth of the sea mobile body, Calculate the position of the bottom of the maritime mobile body and calculate the future position of the maritime mobile body from the current position, moving direction and speed of the maritime mobile body. The sea movement Maritime mobile object monitoring method of the vicinity of the subsea entity, wherein the sea mobile bottom of it is determined whether or not approaching. A marine mobile object monitoring method installed in the vicinity of a submarine entity,
A TDMA (Time Division Multiple Access) system using VHF band radio waves from the AIS maritime mobile equipment mounted on the sea mobile body which has specifications conforming to the international standard of the ship automatic identification system AIS established by the International Maritime Organization IMO Or information transmitted by a DSC (Digital Selective Call) method, which is an IMO number that identifies the transmitting-side maritime mobile unit, the current location of the transmitting-side maritime mobile unit, and the current location of the transmitting-side maritime mobile unit AIS receiving means for receiving AIS information including the moving direction and the current moving speed of the transmitting marine mobile body;
Consists of a data set of the IMO number and a data set of the sea mobile body bottom depth related value related to the sea mobile body bottom depth of the sea mobile body specified by the IMO number in an electronic computer. When the IMO number is input as a search input, the corresponding ocean mobile body bottom depth data storage unit is searched for and output from the sea mobile body bottom depth data storage unit. A marine mobile body bottom depth database means having a data search unit to perform,
Sea level output means for outputting the value of the height of the sea level near the subsurface entity based on calculation or measurement;
Using a discrimination means consisting of an electronic computer,
In the maritime mobile body bottom depth data storage unit, the sea level at the time of full loading, in which the passenger or the load is loaded to the maximum, is set as the sea mobile body bottom depth related value of the maritime mobile body. The value of the full-time draft depth d _max that is the depth from the draft line that is in contact with the lowest height position of the bottom surface of the marine mobile body at the full load time to an appropriate value in the range of 0.1 to 10.0. The value obtained by multiplying the correction coefficient α, which is the value, is stored as the depth of the bottom of the sea mobile body of the sea mobile body,
The discriminating means inputs the IMO number included in the AIS information received from the radio wave from the sea mobile body existing in the sea area near the sea surface entity to the sea mobile body bottom depth database means as the search input. Then, the position of the bottom of the sea mobile body of the sea mobile body is calculated from the sea bottom depth of the sea mobile body retrieved and output by the sea mobile body bottom depth database means and the sea surface height near the subsurface entity. The future position of the maritime mobile object is predicted and calculated from the current position, direction and speed of the maritime mobile object, and whether the bottom of any of the marine mobile objects approaches the submarine entity. A marine mobile object monitoring method in the vicinity of an undersea entity characterized by determining whether or not.

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