JP2008260315A - Ship maneuver supporting method and system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To determine acceleration and seasickness in different parts of the hull of a ship under bad weather, also to determine how the ship is approaching to the critical value of a risk of capsizal leading to various sorts of capsizals, to enable prediction on the real-time basis about which manner of maneuvering the ship should decrease the acceleration and/or seasickness inside the hull, and to decrease the risk of capsizal. <P>SOLUTION: A ship maneuver supporting method and system according to the invention provides information to ones who are maneuvering the ship on the real-time basis, by providing, in addition to a conventional hull motion monitoring device: a determining device for the cruising condition with surges etc., such as an analyzing device for the acceleration on board and the seasickness situation, and a determining device of risk of capsizal; and a ship maneuvering method presuming device 9 to give improvement information about the cruising condition. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a marine vessel maneuvering support method and a system for advising a marine vessel operator, for example, for determining an operational state in a wave of a ship (structure) and improving the operational state.

  As a conventional technique, as a system for monitoring the operational state in the waves mounted on a ship, for example, an output of a monitoring device for various motion data of a ship such as a shake meter, a heave (HEAVE) meter, and an output of a weather / sea state prediction processing device There is a system that operates a warning determination device based on the comparison, outputs a warning when a predicted value exceeds a warning reference, and supports safe navigation of the hull (Patent Document 1).

  In addition, there is an individual wave prediction / warning system that predicts dangerous individual waves that can be encountered by, for example, ships or offshore structures, and supports the safety of ships or offshore structures. (Patent Document 2).

JP 11-79076 A JP 2004-338580 A

However, these conventional techniques have the following problems.
1) The ship operator cannot grasp the acceleration and seasickness in each part of the hull in real time.
2) It is difficult to scientifically analyze and judge the dangers that lead to various capsizes in real time.
3) It is difficult to determine how close to the limit value of rollover.
4) It is difficult to predict in real time how the ship will operate to reduce acceleration and seasickness and reduce the risk of capsizing.

  That is, in the prior art, when the predicted value exceeds the warning reference value, an alarm signal is generated, or based on the wave predicted by the individual wave prediction means and the position and direction of the ship after a predetermined time, It is a type that judges the safety or danger of a ship or the like, such as predicting an encounter with a wave by means of a danger judgment means, and directs a ship maneuvering method.

  In addition, in any of these conventional ship maneuvering methods, if the ship is not operated according to the warning, the state where the warning is issued continues, or conversely, the ship maneuvering method as a result of following the warning is There was also a possibility that uncomfortable situations and situations would occur for passengers or cargoes.

  In order to solve the above-described problems, the present invention analyzes ship acceleration and seasickness conditions in addition to the conventional direct hull motion monitoring device, determines the risk of capsizing, and eliminates them. The present invention relates to a ship maneuvering support method and system for exploring a law and providing information to a ship operator in real time.

  In order to solve the above-mentioned problems, the invention according to claim 1 displays the ship motion data during navigation, wave information obtained from this data, acceleration / seasickness information of each part of the ship as current values. At the same time, the limit value information on the possibility of rollover obtained based on these values and the restoration performance information at the design stage of the hull is displayed, and the hull motion obtained from the hull motion data is reduced to avoid rollover and acceleration.・ The ship maneuvering method estimation information estimated to reduce the possibility of seasickness is displayed, and various information is displayed in the bridge, and the operator can monitor the display information and reduce the limit value. A marine vessel maneuvering support method is provided, which is capable of maneuvering in a direction to be operated.

  The invention described in claim 2 is a hull motion measuring device for measuring hull motion data of a hull, and a first acceleration / seasickness rate calculation for calculating and displaying acceleration / seasickness rate of each part of the hull from the measurement result. Compare the output of these devices with the wave estimation device that estimates and displays the waves from the ship motion measurement results, and the output of the limit value setting device given at the time of design or as the ship's operational limit. Comparison device for displaying difference or ratio with limit value, hull motion estimation device for estimating hull motion from output of wave estimation device, and second acceleration / seasickness rate calculation for calculating acceleration seasickness from this output And a marine vessel maneuvering estimation device that calculates and displays the acceleration seasickness mitigation degree and capsizing avoidance degree using both outputs as inputs, and the above various displays are displayed in a bridge. It is to provide a support system. The acceleration / seasickness rate is also intended to keep the cabin in a comfortable and comfortable state by displaying the cabin data.

  As described above, according to the configuration of the present invention, the ship operator recognizes the current danger when judged from the technical limit value of the ship as an accurate grasp of the situation that the ship is encountering as hardware. Above, it is possible to obtain guidelines for safe navigation as far as possible from the technical limit value of the ship, not using fully automatic maneuvering, but using the data of each measuring device, Optimal and comfortable for cargo, and can operate in anticipation of safety in stormy weather.

  For example, a motion measurement device that can measure hull motion with 5 degrees of freedom, such as up and down, left and right, back and forth, pitch and roll, a wave estimation device that estimates surrounding waves from the measured motion, and measurement Acceleration / seasickness calculation device that calculates the acceleration and seasickness rate of each part of the hull from the measured motion, limit value setting device obtained at the design stage of the hull, and comparison device between the current value and the limit value from the measured motion A ship maneuvering estimation device that makes the hull motion as small as possible, and a transmission device that displays the estimated wave information, acceleration, seasickness rate, and risk of rollover. Various data obtained from the state, capsize limit value, and ship maneuvering estimation method estimated from various data, these data, limit value, and maneuvering estimation method are displayed independently in the cabin, and then capsize The possibility of It is a support system to advise the maneuvering technique to the operator.

  In the figure, 1 is a hull (or offshore structure), and 2 is various hull motion measuring devices equipped on the hull. It is a general term for equipment that measures the shaking of the hull. Reference numeral 3 calculates the acceleration or seasickness rate in each part (a cabin, a cargo room, etc.) on the ship using the data transmitted from the hull motion measuring device 2 by the first acceleration / seasickness rate computing device. Reference numeral 4 denotes a wave estimation device that constantly estimates waves encountered by a ship using data from the ship motion measurement device 2 such as wave height, wave direction, its period, and wind direction, and ship speed data. Reference numeral 5 is a limit value setting device that sets and accumulates various limit values (for example, limit values of the possibility of rollover) based on restoration performance and motion performance studied at the time of designing a ship or the like.

  Reference numeral 6 in the figure denotes a comparison device that compares the output value from the hull motion measurement device 2, the acceleration / seasickness rate calculation measure 3, and the wave estimation device 4 with the limit value in the limit value setting device 5. To determine how much the various values during the operation of the ship are lower than the limit value or exceed the limit value. Reference numeral 7 denotes a hull motion estimation device that inputs an output from the wave estimation device 4 and estimates how the hull moves. Reference numeral 8 denotes a second acceleration / seasickness calculation device, which is a signal from the hull motion estimation device 7 such as an estimated wave height, wave direction, cycle, etc. Acceleration and seasickness calculation is performed based on the estimated value of movement. Reference numeral 9 denotes a ship maneuvering estimation device, and the hull when the state / state of the ship in the waves and wind is changed by maneuvering from the data from the hull motion estimation device 7 and the second acceleration / seasickness calculation device 8. The movement is estimated, and a marine vessel maneuvering method in which the limit value in the comparison device 6 shifts to a safer side than the current state is obtained.

  Further, reference numerals 10 to 14 in the figure denote display devices, 10 denotes current data in each part of the hull of the first acceleration / seasickness rate calculation device 3, and 11 denotes the wave estimation device 4. The current data is displayed, 12 indicates how much each measured value during operation of the comparison device 6 is lower than the limit value, and exceeds the limit value, and 13 indicates acceleration and seasickness reduction. The degree is displayed, and 14 indicates the degree of avoiding rollover.

  That is, the display devices 10 to 12 display the limit value of capsizing of the hull and the current operation status, and the display devices 13 and 14 indicate the relative status with the limit value and the maneuvering method for shifting to the safe side. Is communicated to the person. That is, it shows guidance for maneuvering and shows how maneuvering (change of course, etc.) can leave the danger state.

  With the above support system, the ship operator can accurately grasp the situation that the hull encounters, grasp the current danger by judging from the technical limit value of the hull, and further secure safe navigation as far as possible from the limit value. It is possible to obtain a guideline for the operation of the ship, further improve the safety of ship operations in stormy weather, and conversely, depending on the size of the ship, the ship can be adjusted according to external conditions such as wave height. It can be consciously possible to shake passengers and make them feel like sailing.

  As is apparent from the above description of the present invention, the present invention can be used not only for passenger ships but also for various ships such as tankers, cargo ships, fishing boats, large leisure boats, etc. It is possible and the utility value of this support system is high.

The figure explaining the structure of the ship handling assistance system of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hull 2 Ship motion measurement device 3 First acceleration / seasickness rate calculation device 4 Wave estimation device 5 Limit value setting device 6 Comparison device 7 Hull motion estimation device 8 Second acceleration / seasickness rate calculation device 9 Ship maneuvering method estimation device 10 -11 Current status display device 12 Limit value display device 13-14 Ship handling information display device

Claims (2)

  Hull movement data during navigation, wave information obtained from this data, acceleration / seasickness information of each part of the hull are displayed as current values, and capsizing based on these values and restoration performance information at the design stage is possible The information on the maneuvering technique estimated to reduce the possibility of acceleration and seasickness by reducing the hull motion obtained from the hull motion data, avoiding capsizing, and reducing the possibility of acceleration and seasickness. Is displayed in the bridge.   From the hull motion measurement device that measures the hull motion data of each part of the hull, the first acceleration / seasickness rate calculation device that calculates and displays the acceleration / seasickness rate of each part of the hull from this measurement result, and the hull motion measurement result Compare the output of these devices and the output of these devices with the limit value setting device given at the time of design or as the ship's operational limit, and calculate the difference or ratio between the current value and the limit value. A comparison device to be displayed, a hull motion estimation device that estimates hull motion from the output of the wave estimation device, a second acceleration / seasickness rate calculation device that performs acceleration seasickness calculation from this output, and both outputs are input. A ship maneuvering support system comprising: a ship maneuvering method estimation device that calculates and displays an acceleration seasickness mitigation degree and a capsizing avoidance degree, and the various displays are displayed in a bridge.

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