KR101529378B1 - Method for energy saving, safety managing and maintenance information offering of the marine structure by real time predicted monitoring and controlling hydro-dynamic - Google Patents

Abstract

The present invention relates to monitoring and controlling an external force, a hull stress, a six degree-of-freedom motion and an operation position in a hydrodynamic environment for an offshore structure in real time, and more particularly, It is a comprehensive method to measure the change of slope, draft, trim, corrosion, erosion, crack, pressure, stress, vibration and frequency and control the above offshore structure based on this to provide fuel saving, safe operation and maintenance information .
According to one aspect of the present invention, data on the external and internal forces of the flow of the fluid outside the offshore structure on the offshore structure and the data on the response of the offshore structure on the basis of the internal and external forces are accumulated through a linear test in the water tank, And storing the look-up table in a database; measuring the internal and external forces using a time-of-flight method in actual navigation of the offshore structure and storing the measured internal and external forces in the database; A third step of comparing the measured data of the internal and external forces of the second stage with the data of the internal and external forces accumulated in the look-up table of the first stage to predict data of the response of the offshore structure, And a fourth step of controlling in real time the posture or navigation route of the offshore structure using the data of the reaction, Time operation of the hydroelastic environment, hull stress, 6 degrees of freedom movement and operating position of the time-offshore structure.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a method for providing fuel saving, safe operation and maintenance information by monitoring and controlling the external environment, the hull stress, the 6 DOF motion and the operation position in a hydrodynamic environment for a real time offshore structure. information providing of the marine structure by real time predicted monitoring and controlling hydro-dynamic}

The present invention relates to monitoring and controlling an external force, a hull stress, a six degree of freedom motion and an operation position in a hydrodynamic environment for an offshore structure in real time, and more particularly, It is a comprehensive method to measure the change of slope, draft, trim, corrosion, erosion, crack, pressure, stress, vibration and frequency and control the above offshore structure based on this to provide fuel saving, safe operation and maintenance information .

In operation of offshore structures, ocean currents and tidal currents will inevitably exert internal and external forces on the offshore structures. In particular, in case of offshore fixed structures moored at certain points in the ocean, control over such currents and tidal currents .

In addition, it is urgent to solve the problem of overturning of ships or collapse of shipments due to external force and hull stress in hydrodynamic environments during the operation of offshore structures.

On the other hand, developing and constructing offshore structures with low fuel consumption is at the core of the future shipbuilding industry. Assuming offshore structures that consume 100 tonnes of fuel per day and emit 320 tonnes of carbon dioxide per day, a 1 percent improvement in fuel economy can save more than $ 240,000 a year, reduce the cost by about $ 6 million over 25 years, Fuel economy is one of the most important factors in the secondary market.

In addition, modern societies are largely dependent on power transport systems that emit greenhouse gases, but CO2 emissions are widely recognized as a key driver of global warming, climate change and ocean acidification. The amount of CO2 emitted by transporting one ton of cargo per mile is the most overwhelming vehicle in world trade, despite the fact that offshore structure (100) is the most efficient means of transportation, so CO2 emissions are the total greenhouse gas emissions Of the total. Thus, by increasing the fuel efficiency of offshore structures, emissions of industrial greenhouse gases can be reduced significantly.

In addition, existing manual and semi-automatic methods of marine structure management differ greatly according to the level of work of the crew, and even in the case of the system developed by the semi-automatic method, it is applicable only to the marine structure (100) In order to implement a system, a software engineering approach is required, and a software framework, which is a concept that provides a basis for similar application development, is needed.

Korean Registered Patent Bulletin 10-0412012: Marine oil drilling and stocking jack-up platform

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems and provides a fuel saving method by monitoring and controlling an external force, The purpose.

It is another object of the present invention to provide an environment in which the monitoring information can be shared with other external devices to improve the accuracy of weather information and to calibrate data measured by a satellite.

Further, the present invention aims to provide a safe operation method in real time by controlling changes in inclination, draft, trim, and the like applied to marine suspended matter by an external force in a hydrodynamic environment and controlling the marine floating matter based on the measurement do.

It also aims to provide information on maintenance in real time by measuring corrosion, erosion, cracks, pressure, stress, etc. due to external forces in the hydrodynamic environment applied to offshore structures.

According to an aspect of the present invention, there is provided an apparatus for measuring an internal and external force of a flow of a fluid outside an offshore structure (100) through a linear test in a water tank, A first step of accumulating data on the reaction of the offshore structure 100 to generate a lookup table 210 and storing the lookup table 210 in a database 200, A second step of measuring the internal and external forces using the time-of-flight method and storing the measured internal and external forces in the database 200, the measurement data of the internal and external forces of the second step, A third step of predicting data on the reaction of the offshore structure 100 by comparing the data with the data on the internal and external forces accumulated on the offshore structure 210 by using the data of the reaction of the predicted offshore structure 100, 100), and a fourth step of controlling in real time the posture or navigation path of the real-time offshore structure 100. The predicted monitoring and predictive control of the external environment, hull stress, six degrees-of-freedom motion and operating position in the hydrodynamic environment A fuel saving and safe operation method is provided.

The third step may include a third step of measuring the actual reaction of the offshore structure 100 and a third step of measuring the response of the offshore structure 100 measured in the third step 1, If the data on the reaction of the predicted offshore structure 100 are inconsistent, the data on the reaction of the offshore structure 100 in the third stage will be referred to as the ocean in the lookup table 210 generated in the first stage And may further include step 3-2 of modifying the data on the reaction of the structure 100.

In this case, the modification of the data of the reaction of the offshore structure 100 can be performed by a simulator based on a finite element method (FEA) or an inverse finite element method (iFEM).

Also, in the second step, the internal and external force due to the fluid is measured through a measuring instrument provided on a side surface of the marine obstacle body, and the measuring instrument may include an electric sensor or an optical sensor.

In addition, the second step actually measures the internal and external forces of the fluid flow on the offshore structure 100 using the IMU.

In addition, the reaction of the offshore structure 100 in the second step may include at least one of a traveling direction of the ship, a forward / backward slope, a draft or a trim when the offshore structure 100 is a ship .

In the second step, the reaction of the offshore structure 100 may include at least one of an operation direction, a forward / backward slope, and a draft of the structure when the offshore structure 100 is a temporary fixed structure.

The second step may measure the direction and speed of the algae and the currents according to the space and time according to the depth of the water.

Also, the second step may measure data including natural frequency, harmonic frequency and fluid characteristics of the offshore structure 100 by the flow of the fluid.

In addition, the database 200 storing the lookup table 210 in the first step may be a navigation recorder (VDR) provided in the offshore structure 100.

In the case where the offshore structure 100 is a temporary fixed structure, the lookup table 210 is recorded as hourly series data on a yearly basis, and the accumulated yearly unit time up to the previous year, The lookup table 210 can be modified through comparison with the sequential data.

The fourth step may be performed by using at least one of a rudder 110, a thruster 120, a propeller 130, a sail 140, 100) can be controlled in real time.

In the fourth step, when the offshore structure 100 is a ship, the resultant force of the internal force and the propulsive force on the basis of the predicted data of the response of the offshore structure 100 is the target traveling direction The direction of the rudder 110 and the RPM of the thrusters and propellers can be controlled.

In the case where the offshore structure 100 is a temporary fixed structure, according to the data on the reaction of the predicted structure, the resultant with the internal and external forces is minimized and the trusser 120 is controlled to maintain the current position .

In addition, the offshore structure 100 may include a helideck 150, and the fourth step may include dynamic positioning (DP) and dynamic motion estimation (DM) to maintain the balance of the helideck 150, And the balance state information of the helideck 150 may be stored in the database 200. The balance state information of the helideck 150 may be stored in the database 200. [ The balance state information of the helicopter 150 according to the control of the attitude of the offshore structure 100 is stored in the database 200. The database 200 is connected to an external structure information server The structure information server transmits the equilibrium state information of the helicopter 150 to the position of the ocean structure 100 having the equilibrium state information of the helicopter 150 from which the helicopter can take off and land in the plurality of the oceanic structures 100 Information can be provided to the helicopter.

In addition, in the first and second steps, the data on the external and internal forces of the fluid flow on the offshore structure 100 may include data on the currents and / or the offsets measured by a pressure sensor installed on the side of the offshore structure 100 And may be data on a vector of algae.

The plurality of pressure sensors may be provided at regular intervals on the side of the offshore structure 100.

The plurality of pressure sensors may be provided on the side of the offshore structure 100 with a height difference therebetween. Then, the presence or absence of data measurement from the pressure sensor is analyzed, and the peak data can be acquired through the data from the pressure sensor located at the highest position.

Also, at least three pressure sensors of the plurality of pressure sensors are formed as one three-dimensional pressure sensor module, and the three-dimensional pressure sensor module acquires three-dimensional vector information of the current and algae.

The second step may include measuring at least one of distances of wave, wave, wave period, wave velocity or wave direction from the offshore structure 100 by the meteorological instrument 300, The weather measurement apparatus 300 may further include at least one of a wave radar, a directional waverer, a sea level monitor, an ultrasonic level meter, a wind direction anemometer, ≪ / RTI >

The second step may include measuring at least one of a distance, a wave period, a wave velocity, or a wave direction from the ocean structure 100 by a radar, And a second step of storing the second information.

The offshore structure 100 may include a ballast tank 500 and may include sloshing suppressors 500 disposed on both sides of the ballast tank 500 to reduce the sloshing phenomenon in the ballast tank 500, 510 < / RTI > The sloshing suppressing unit 510 suppresses the sloshing phenomenon by narrowing the opening area of the cross section in one horizontal cross section of the ballast tank 500.

The fourth step may control the posture of the offshore structure 100 by moving the ballast water loaded on the ballast tank 500 in a direction opposite to the tilted direction. The ballast tank 500 includes a partition 520 dividing the ballast tank 500 and an opening and closing part 520 for moving the ballast water to the other compartment And a pump 540 for controlling a moving speed and a moving direction of the ballast water may be installed inside the opening and closing part 530. [

In addition, the measurement data of the internal and external forces in the second step are transmitted to the external weather information server, and the weather information server compares the weather information received from the satellite with the measurement data of the internal and external forces, One weather information correction data can be stored.

Further, the weather information modification data may be provided to the external user terminal in response to a request from an external user terminal connected to the weather information server.

In accordance with another aspect of the present invention, there is provided a method for measuring an internal and external force applied to an offshore structure (100) by a fluid flow from an offshore structure (100) through a linear test in a water tank, A first step of storing data of a reaction of the offshore structure 100 according to an external force to generate a lookup table 210 and storing the lookup table 210 in a database 200, A second step of measuring the internal and external forces using the time-of-flight method in navigation and storing the measured internal and external forces in the database 200, the measurement data of the internal and external forces of the second step, A third step of comparing data of the internal and external forces accumulated in the table 210 to predict data of a reaction of the offshore structure 100, a third step of measuring a response of the actual offshore structure 100, In step 3-1, The data of the reaction of the defined offshore structure 100 and the data of the reaction of the offshore structure 100 predicted in the third stage are compared and when the difference is generated, A step 3-2 of modifying the data on the response of the offshore structure 100 in the lookup table 210 generated in the first step and a step 3-2 of modifying the data stored in the lookup table 210 as virtual And a fourth step of obtaining maintenance data for the offshore structure 100 through simulation of the offshore structure 100.

In addition, the data on the reaction of the offshore structure 100 may include at least one of strain, strain, crack, vibration, frequency, corrosion, and erosion.

In addition, the maintenance data of the fourth step may be obtained in accordance with a predetermined importance level of the individual structures provided in the offshore structure 100.

Also, the maintenance data may include at least one of position information requiring maintenance, maintenance cost information, maintenance required time information, or remaining life information of each structure.

In accordance with the present invention, it is possible to monitor and control the external forces, hull stress, six degrees of freedom movement, and operating position in the hydrodynamic environment of the pending or offshore structure 100 in real time, It is possible to efficiently save.

In addition, it can measure the changes of inclination, draft, trim, etc. of the front, rear, left, and right applied to the marine floating material by external force in the hydrodynamic environment, thereby enabling safe operation through controlling the marine floating matters.

In addition, it is possible to share the information monitored by the offshore structure with others to enhance the accuracy of weather information, and to provide an environment that can be used as a ground true station for calibrating data measured by a satellite.

In addition, it can contribute to global environmental studies such as rising sea level and energy balance due to global warming by accumulating information monoterized in the above-described offshore structures.

In addition, it is possible to maintain an equilibrium of the helidecks installed in offshore structures, thereby providing an environment in which a helicopter can be quickly rescued in case of a marine accident.

In addition, the weather information received from the satellite can be compared with the measurement data of the internal and external forces, thereby reducing the error and contributing to the fisheries industry as a basic data for forecasting.

In addition, by providing information on related maintenance in response to corrosion, erosion, cracks, pressure, stress, etc. caused by external force in the hydrodynamic environment applied to an offshore structure, the life of the offshore structure can be extended and operated for a long time do.

In addition, analyzing the static or dynamic characteristics of offshore structures exposed to on-site conditions such as high waves and high wind speed can provide important data for establishing long-term measures to secure long-term stability of offshore structures.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart of a fuel saving and safe operation method for predicting and monitoring external force, hull stress, six degrees of freedom motion, and operation position in a hydrodynamic environment for a real time offshore structure according to the present invention.
2 is a view showing a state where a pressure sensor is installed on an offshore structure according to an embodiment of the present invention.
FIG. 3 is a view illustrating a fuel saving and safe operation method by controlling a rudder when internal and external forces due to fluid dynamics are applied according to an embodiment of the present invention.
4 and 5 are sectional views of a ballast tank according to another embodiment of the present invention, partition walls provided in a ballast tank, and structures of the partition walls.
FIG. 6 is a schematic representation of maintenance data for an offshore structure 100 through simulation according to another embodiment of the present invention.
7 is a view showing a marine structure (particularly a ship) and a helideck installed in the marine structure.

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

The term offshore structure 100 as used in the present invention is intended to encompass all types of offshore structures such as, for example, offshore plants, general merchant ships, jack uplifts, semi-sub leagues, jackets, compliant towers, TLP, (Eg, non-subsea structure / Flare tower, top-side, marine structures (100) in a docking relationship, drill rig, oil field generator, etc.) Production Casing, Risers, Flowline, Production line, Mooring line, Hawser line, Lowering line, Tethering Cable line for ROV, Structural support and connection cable of Eco-friendly fuel saving cutter, Fiber optic sensor tenderers, blades and towers of wind power generators, jackets, foundations and tensioners to be introduced, bridges / cable-stayed bridges, supports for marine, underwater or underwater structures, and concrete tensioners And so on.

In the present invention, when a ballast tank is operated as an empty ship without loading a cargo on a ship, the efficiency of the propeller 130 floats on the water surface, or the ballast tank is seriously damaged. This is to prevent the ship from having a constant draft, and to prevent the ship from losing stability when the cargo is unevenly loaded in the ship. Generally, a water ballast is used to fill seawater in a ballast tank, but when this is not enough, a solid ballast is used to load sand.

In the present invention, a measuring device for measuring an external force (e.g., wind load, wave load, current load) and a reaction of a structure (e.g., displacement, deformation, motion, and vortex) temperature, ammeter, acoustic emission test, seismic sensor, flow rate, distribution temperature sensor, distributed strain sensor, particle induced velocity (piv), particle tracking velocity (ptv), strain sensor, extensometer, accelerometer, (OTDR), and so on.

In the present invention, the measuring device for measuring the load (e.g., sloshing load), the flow load, the pressure load, and the thermal load and the reaction (e.g., displacement, deformation, motion, walking, buckling, (Piv), particle tracking velocity (ptv), strain sensor, accelerometer, ammeter, acoustic emission test, seismic sensor, flow rate, distribution temperature sensor, distributed strain sensor, Loss measuring device (OTDR), and the like.

In addition, according to another embodiment of the present invention, the composite optical measuring instrument 500 may include an optical time-domain reflectometer (OTDR), a Raman spectrometer method, a Brillouin scattering method, a Rayleigh wave, , A DAS (Distributed Acoustic Sensing), an acoustic emission method (acoustic emission), and an interference method (interferometry).

In the present invention, the time and spatial information and the shape acquisition technique are classified into a wide range of methods including a method of collecting data on the fluid dynamics using RF & Microwave-GPS, DGPS, RTK, optical-LiDAR, PIV, PIT, Let us know in advance that this is a term.

In the present invention, an inertial measurement unit (IMU) is a broad term encompassing an instrument for measuring acceleration and rotational motion of a gyro, a light grating, and the like. Gyroscopes are used to measure the direction and equilibrium (tilt) of an aircraft, a ship, a missile, etc., which are used to measure the direction of an axisymmetric high-speed rotor in an inertial space or measure the angular velocity of an inertial space. Keep the direction and equilibrium of the airplane and vessel operating at night constant.

In addition, the time and space information and shape acquisition technique and the IMU are integrated with the environment-aware 6-DOF motion, reaction attitude, operation position measurement and database 200 of the offshore structure 100 to obtain artificial intelligence EEOI / EEDI / DMS / DPS monitoring, warning system, and automatic control system.

Prior to describing the present invention, the numerical mathematical models used in the present invention include computational fluid dynamics, finite element method, fluid structure interlocking analysis, finite difference method, finite volume method, IFEM (Inverse Finite Element Method) And the like. And the finite element method (FEA) divides a continuous structure into finite elements of a one-dimensional rod, a two-dimensional triangle, a square, and a three-dimensional middle entity (tetrahedron, hexahedron) , Which is a numerical calculation method in which calculation is performed based on an approximate solution.

In the present invention, the context aware middleware converts context information input from a sensor such as a USN sensor into a middleware dedicated packet by the agent, and transmits the packet to the context aware middleware. The middleware receives the context information, processes it in each module classified by function, It collects all types of sensor information or controls all equipment through an agent that converts the program status information, which can be transferred to the user program and monitored and controlled, into a packet dedicated to middleware. Middleware is modularized for each function (notification, processing, storage, log, control, IO, external application). Since middleware message defined in XML is used for inter-module data interlocking, independence between modules is ensured, And the like.

In the present invention, the web-based context-awareness monitoring program is a program for monitoring situation information using the context aware middleware, and can be used in a system that is built on the web and operates normally. Real time monitoring (graph representation, chart display possible), 10 minute average view Historical data inquiry (per period, per sensor), warning after threshold setting after threshold setting per sensor, external program call for some sensor and monitoring result It is a broader term to cover.

Strain, strain, displacement, fatigue, crack, vibration or frequency of the offshore structure 100 are measured by integrating electric or optical measuring instruments.

The force of the fluid flow on the hull is due to the velocity and direction in three dimensions over time, and the x, y, z axis and the incident angle depend on the x, y and z axes.

Referring to FIG. 1, fuel saving and safe operation through predictive monitoring and control of external force, hull stress, six degrees of freedom motion and operating position in a hydrodynamic environment for a real-time offshore structure 100 according to an embodiment of the present invention The method includes accumulating data on the external and internal forces of the flow of the fluid outside the offshore structure 100 on the offshore structure 100 and on the response of the offshore structure 100 on the basis of the internal and external forces, A first step of generating a look-up table 210 and storing the look-up table 210 in a database 200, a first step of measuring the time-of-flight method in the actual navigation of the ocean structure 100, A second step of measuring the internal and external forces and storing the measured internal and external forces in the database 200 and a second step of comparing the internal and external force measurement data with the data of the internal and external forces accumulated in the lookup table 210 of the first step, year A third step of predicting data on the reaction of the structure 100, a fourth step of controlling in real time the posture or navigation route of the offshore structure 100 using the data of the reaction of the predicted offshore structure 100, There is provided a fuel saving and safe operation method through predictive monitoring and predictive control of an external force, hull stress, six degrees of freedom motion and operating position in a hydrodynamic environment for a real-time offshore structure 100,

The hull resistance due to the change of draft and trim is measured through a linear test in a water tank and the hydrodynamic energy to be applied to the ship is measured by a pressure sensor, a strain sensor, an accelerometer, etc. . In this case, the direction and velocity of the currents and algae by height are measured in space and time.

Further, according to the above steps, the automatic control is performed by interlocking the numerical arithmetic model with the actual measurement data. The direction and velocity of the hydrodynamic energy to be applied to the hull are measured in advance, reflected in the hull, the hydrodynamic reaction model test is used to predict the response of the offshore structure 100, and compared with the actually measured data, , Which is a characteristic of the hydrodynamic reaction model, which determines an attitude control or a navigation route.

The third step may include a third step of measuring the actual reaction of the offshore structure 100 and a third step of measuring the response of the offshore structure 100 measured in the third step 1, If the data on the reaction of the predicted offshore structure 100 are inconsistent, the data on the reaction of the offshore structure 100 in the third-stage is used as the data on the response of the offshore structure 100 in the look- (3-2) of modifying the data of the reaction of the mobile terminal (100).

In this case, the modification of the data of the response of the offshore structure 100 can be performed by a finite element method (FEA) based simulation.

The measured data from the measuring instrument analyze the behavior of the offshore structure (100), the correlation between 6 degrees of freedom motion and various physical quantities by maximizing CFD input conditions. An algorithm and a simulation are constructed by linking the actual measurement data with the result of the arithmetic prediction model in the situation recognition middleware. The web-based system is constructed through the context aware middleware and the web based context awareness monitoring program to implement monitoring and prediction control system of artificial intelligence in addition to simple monitoring.

In the second step, the second step may include measuring an internal and external force due to the fluid through a measuring instrument provided on a side surface of the marine obstacle body, wherein the measuring instrument is an electric sensor or an optical sensor.

In addition, the second step actually measures the internal and external forces of the fluid flow on the offshore structure 100 using the IMU.

In addition, the reaction of the offshore structure 100 in the second step may include at least one of a traveling direction of the ship, a forward / backward slope, a draft or a trim when the offshore structure 100 is a ship .

In the second step, the reaction of the offshore structure 100 may include at least one of an operation direction, a forward / backward slope, and a draft of the structure when the offshore structure 100 is a temporary fixed structure.

The second step may measure the direction and speed of the algae and the currents according to the space and time according to the depth of the water.

Also, the second step may measure data including natural frequency, harmonic frequency and fluid characteristics of the offshore structure 100 by the flow of the fluid.

The database 200 storing the lookup table 210 in the first step may be a navigation recorder (VDR) provided in the offshore structure 100.

In addition, an electric or optical sensor is attached to the mooring line, the support of the eco-friendly fuel-saving sail 140 and the sail line to monitor the change due to the coupled energy of the fluid mechanics can do.

Even in the case of off-loading or docking, the stresses measured by pulling the optical fiber or the electric strain sensor to the hawser and the loading hose and the external force in the hydrodynamic environment are generated in the offshore structure 100 (6-DOF) motion data (Heading, Sway, Heave, Rolling, Pitching, Yawing motion) with structural analysis and real-time control or predictive control of off- Minimizes the force applied by fluid mechanics (Pipe line, Pump, inlet tensioner, riser, mooring line, Hauser, off-loading line inertia and elasticity).

The data stored in the database 200 can be used as reference data to realize real-time situation recognition, historical situation recall, and situation prediction against the number of cases. In addition, the stored data can be used to perform structural diagnosis and work evaluation functions through virtual simulation.

In the case where the offshore structure 100 is a temporary fixed structure, the lookup table 210 is recorded as hourly series data on a yearly basis, and the accumulated yearly unit time up to the previous year, The lookup table 210 can be modified through comparison with the sequential data. This makes it possible to reduce the error automatically.

In the fourth step, at least one of the rudder 110, the thruster 120, the propeller 130, and the sail 140 may be used to determine the posture of the offshore structure 100 Or the navigation route can be controlled in real time. That is, the control of the rudder 110 and the like is performed so that the six-degree-of-freedom motion can be minimized, and the direction of the rudder 110 is controlled to compensate for the force due to the hydrodynamics in the case of the offshore structure 100 Thereby making it possible to operate the route.

On the other hand, when the offshore structure 100 is in operation, there is a risk that the offshore structure 100 is rolled or the shipments are dropped by rolling. In this case, if at least one key is provided below the offshore structure 100, the rolling can be reduced by the friction by the key.

3, if the maritime structure 100 is a ship, the fourth step may be performed according to the data of the reaction of the predicted offshore structure 100. In other words, The direction of the rudder 110 and the RPM of the thrusters and the propeller can be controlled so that the resultant force of the propulsive force and the internal and external forces of the propeller is the desired traveling direction. For example, in the case where the rudder 110 is controlled not to control the rudder 110 provided on the ship with respect to the internal and external force applied to the ship by the fluid dynamics, the moving distance to the target point is shortened Can be confirmed through FIG.

In the case where the offshore structure 100 is a temporary fixed structure, according to the data on the reaction of the predicted structure, the resultant with the internal and external forces is minimized and the trusser 120 is controlled to maintain the current position .

7, the offshore structure 100 may include a helideck 150, and the fourth stage may include dynamic positioning (DP) to maintain the balance of the helideck 150, And dynamic motioning (DM) to control the attitude of the offshore structure 100 and to store the balance state information of the helideck 150 in the database 200. The balance state information of the helicopter 150 according to the control of the attitude of the offshore structure 100 is stored in the database 200. The database 200 is connected to an external structure information server The structure information server transmits the equilibrium state information of the helicopter 150 to the position of the ocean structure 100 having the equilibrium state information of the helicopter 150 from which the helicopter can take off and land in the plurality of the oceanic structures 100 Information can be provided to the helicopter. The angle of 6 degrees of freedom such as a trim is adjusted so that the balance of the offshore structure 100 can be maintained in accordance with the work objective function (helicopter takeoff and landing, separator, liquefaction process, etc.) To maintain the equilibrium state, or to mitigate the impact. In particular, it mitigates the impact of offshore structures or helicoid and helicopter support structures during takeoff and landing.

In addition, in the first and second steps, the data on the external and internal forces of the fluid flow on the offshore structure 100 may include data on the currents and / or the offsets measured by a pressure sensor installed on the side of the offshore structure 100 And may be data on a vector of algae.

Referring to FIG. 2, a plurality of pressure sensors may be provided at predetermined intervals on the side surface of the offshore structure 100 according to another embodiment of the present invention. Meanwhile, the monitoring of the wave acting on the offshore structure 100 is performed by installing a three-dimensional pressure sensor module on the side, extracting the vector of the current and the algae by analyzing the measured data, It can be seen that the waves are coming in. Through this, it is possible to estimate the wave velocity by calculating the strain value due to the wave as well as the direction of the wave depending on space and time.

The second step may include measuring at least one of distances of wave, wave, wave period, wave velocity or wave direction from the offshore structure 100 by the meteorological instrument 300, The weather measurement apparatus 300 may further include at least one of a wave radar, a directional waverer, a sea level monitor, an ultrasonic level meter, a wind direction anemometer, ≪ / RTI >

Referring to FIG. 2, a plurality of pressure sensors may be provided, and the pressure sensors may be installed on the side of the offshore structure 100 with a height difference. It is possible to analyze the presence or absence of data measurement from the pressure sensor and acquire the peak data through the data from the pressure sensor located at the highest position. The period of the wave can be calculated by measuring the period of the measurement data.

Referring to FIG. 8, the second step may be performed by a wave radar 310 (wave radar) from the offshore structure 100 to a long wave of wave, wave, , The speed of the wave, or the direction of the wave, and stores the measured data in the database 200. [0033] FIG. The wave radar 310 may be used to calculate the fluid dynamics of the offshore structure 100 by measuring the wave, wave, wave period, wave velocity and wave direction of a few hundred meters.

IMU, time and space information and shape acquisition techniques, and radar capable of detecting X-band / S-band to predict wave motion including wave and wave as well as collision with dangerous goods, Hogging, sagging and tortion as well as 6 degrees of freedom motion of the offshore structure 100 by using the time and space information acquisition technique to measure the degree of hogging, sagging and tortion of the offshore structure 100, Movement distance and environmental measurement data of the coordinate measuring satellite are interlocked with radar and IMU data to minimize fatigue of offshore structure 100.

In addition, the present invention is not limited to 32 Polar image acquisitions of the above-mentioned wavelets, and real-time dynamic image processing is performed by receiving a new Polar image and deleting the first or oldest Polar image to perform real-time dynamic image processing. Through this, it is possible to anticipate the movement of the wave including the prevention of the collision with the dangerous object and the wave and the wave in real time. In addition, the existing X-band or S-band anti-collision radar is used by utilizing RF 1x2 splitter or RF amplifier. In addition, we compensate the influence of the 6 degrees of freedom motion on the measured data of the waveator, and use the Time of Flight method and the image overlay method.

4, the offshore structure 100 includes a ballast tank 500, and in order to reduce the sloshing phenomenon in the ballast tank 500, And a sloshing suppression unit 510 provided on each side of the ballast tank 500. The sloshing suppressing unit 510 suppresses the sloshing phenomenon by narrowing the opening area of the cross section in one horizontal cross section of the ballast tank 500.

5, in the fourth step, when the inclination occurs, the ballast water (500) loaded in the ballast tank (500) opposite to the tilted direction, So that the posture of the offshore structure 100 can be controlled. The ballast tank 500 includes a partition 520 partitioning the inside of the ballast tank 500 and the partition 520 may be partitioned into the other partition A pump 540 for controlling the moving speed and the moving direction of the ballast water may be installed inside the opening and closing part 530. [ In addition, the water level of the ballast tank may be monitored by connecting the ballast tank 100 with a water gauge to perform active control through feed back and / or feed forward have.

The weather information server transmits measured data of the internal and external forces in the step 2 to an external weather information server. The weather information server compares the weather information received from the satellite with the measurement data of the internal and external forces, Can be stored.

Further, the weather information modification data may be provided to the external user terminal in response to a request from an external user terminal connected to the weather information server.

In accordance with another aspect of the present invention, there is provided a method for measuring an internal and external force applied to an offshore structure (100) by a fluid flow from an offshore structure (100) through a linear test in a water tank, A first step of generating a look-up table 210 by accumulating data on a reaction of the offshore structure 100 according to an external force, a time-of-flight method in the actual navigation of the offshore structure 100, A second step of measuring the internal and external forces using the first and second steps, and a second step of comparing the measurement data of the internal and external forces with the data of the internal and external forces accumulated in the lookup table 210 of the first step, A third step of estimating the response of the offshore structure 100, a third step of estimating the response of the offshore structure 100, a third step of estimating the response of the offshore structure 100, In the reaction of the predicted offshore structure (100) The data of the response of the offshore structure 100 in the third stage is compared with the data of the response of the offshore structure 100 in the lookup table 210 generated in the first stage, And a fourth step of acquiring maintenance data for the offshore structure 100 through virtual simulations of the data stored in the lookup table 210.

Referring to FIG. 6, the contents of the maintenance data obtained through simulation can be confirmed according to an embodiment of the present invention. For example, the maintenance data may include location information, maintenance cost information, maintenance required time information, remaining service life information, and the like for each of the individual structures provided in the offshore structure 100 Can be output.

In addition, the data on the reaction of the offshore structure 100 may include at least one of strain, strain, crack, vibration, frequency, corrosion, and erosion. The frequency includes a natural frequency and a harmonic frequency and is used in conjunction with a structural analysis system to minimize the fatigue caused by the frequency applied to the offshore structure 100, do.

In addition, the maintenance data of the fourth step may be obtained in accordance with a predetermined importance level of the individual structures provided in the offshore structure 100.

DP, or DM boundary conditions, it is necessary to determine priorities for fatigue minimization for the individual structures provided in the offshore structure 100, and to set emergency priorities for EEOI / EEDI / DMS / Hourly, and priority.

Also, the maintenance data may include at least one of position information requiring maintenance, maintenance cost information, maintenance required time information, or remaining life information of each structure.

Strain, strain, displacement, fatigue, micro cracks, vibration, etc. of the floating mat combination resulting from sloshing by drawing an electric or optical sensor at one or more points of the floating mat combination, Measure the frequency. Strain, deformation, displacement, micro crack, vibration due to impact between floating mats and walls of fluid storage tanks due to sloshing of fluid by drawing electric or optical sensors between the walls of fluid storage tanks. , And the frequency is measured.

The floating mat unit is made of a structure or material that can float in the liquid containing LNG. The floating mat unit is applicable to the LNG tank, the ballast tank 500, and the like. The size of the floating mat is determined in consideration of the maximum amount of the material Thereby minimizing sloshing and at the same time minimizing impact due to sloshing of the mat and tank.

Measurement of the offshore structure 100 and the tank is also important, but the reaction of the offshore structure 100 due to slamming is not the same, so that an electric or optical sensor is pulled in and caused by sloshing The load, strain, strain, displacement, fatigue, micro crack, vibration and frequency of the floating mat combination are measured to minimize shock between the offshore structure 100 and the tank through safety diagnosis and control. It is used.

Data on the response of the offshore structure 100 due to the measured slamming and the response of the storage tank including the ballast tank 500 by sloshing are combined with mathmatical models to provide optimization & And the results are stored in a VDR or a separate server in the form of a look-up table 210 to control the attitude of the offshore structure 100 to minimize damage. Also, the stored data is used as reference data, which is a situation necessary to implement real-time situation recognition, past record situation reproduction, and situation prediction on the number of cases. In addition, the structure diagnosis and the work evaluation function can be performed through the virtual simulation using the stored data.

The algorithm or simulator implements an optimized prediction simulator by continuously reflecting the actual measurement data and modifying the lookup table 210. The automation utilizing the automatic learning technique can be implemented in the offshore structure 100 including the Risers (SCR, TTR, Tendon) / ROV / Drill rig etc. by reflecting the algorithm or the simulator.

The control method of the real-time offshore structure according to the embodiment of the present invention by monitoring the external force, hull stress, 6 degrees of freedom motion and the operation position in the hydrodynamic environment is performed by using Radar, IMU, GPS measurement technique, X-band Radar In addition to collision avoidance, wave and wave motion are predicted, and at least one IMU is used to measure not only six degrees of freedom motion but also hogging, sagging, and torsion of offshore structures. EEOI / EEDI / DP Boundary / DM Boundary / Risers (SCR, TTR, Tendon) / Lowering / Minimizing the fatigue of offshore structures by linking with the radar and IMU data, It can be replaced with the algorithm and simulator of the prediction procedure by reflecting it in the ROV / Drill Rig. In addition, radar is used to measure the speed, direction and direction of wave, wave, period, and wave. However, Radar's Polar image acquisition is not limited to 32. In order to perform real-time dynamic image processing, Polar images can be deleted to perform real-time dynamic image processing. And it can interlock with anti-collision, wave / wave measurement and wave motion prediction function. In addition, the existing X-Band or S-Band anti-collision radar can be used to extract wave, wave, period, and smell measurement results using RF 1x2 splitter, RF amplifier or optical signal transmission and amplification function. In addition, a 6 degree of freedom Motion Compensated X / S-Band Wave Radar, Wave Height Measuring Sensor, Doppler, Time of Flight and Image Overlay method can be used.

The above description is merely illustrative of the technical idea of the present invention and it will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof, It should be understood that the described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: offshore structure 110: rudder
120: Trusser 130: Propeller
140: Sail 150: Helideck
200: database 210: lookup table
300: Weather measurement device 310: Wave radar
500: Ballast tank 510: Sloshing suppression part
520 partition wall 530 opening /
540: Pump

Claims (36)

Data on the external and internal forces exerted by the flow of the fluid outside the offshore structure on the offshore structure and the data on the response of the offshore structure on the basis of the internal and external forces are accumulated through a linear test in a water tank or wind tunnel to generate a look- A first step of storing in a database;
A second step of measuring the internal and external forces using the time-of-flight method in the actual navigation of the offshore structure and storing measurement data in the database;
Wherein the lookup table is recorded in a one-year-unit time-series data, wherein the look-up table is obtained by comparing the one-year unit time series data accumulated up to the previous year with the measurement data of the second step, Step 2-1 of modifying the look-up table;
A third step of comparing the measurement data of the internal and external forces of the second stage with the data of the internal and external forces accumulated in the look-up table of the first stage to predict the data of the response of the marine structure;
A fourth step of controlling the posture or the navigation route of the offshore structure in real time using data on the predicted response of the offshore structure;
Containing
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
In the third step,
A third step of measuring an actual reaction of the offshore structure; And
If the data on the response of the offshore structure measured in the step 3-1 and the data on the response of the offshore structure predicted in the third step are inconsistent, the data on the response of the offshore structure in the step 3-1 A step 3-2 of correcting the data of the response of the offshore structure in the lookup table generated in the first step or correcting and supplementing the numerical model by reflecting the modified data;
Lt; RTI ID = 0.0 > 1, < / RTI &
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position.
3. The method of claim 2,
Modification of the data for the response of the offshore structure,
Characterized in that it is implemented by a simulator based on a numerical model including CFD, Finite Element Method (FEA), IFEM (Finite Element Method) or FSI.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
The second step comprises:
Measuring an internal and external force due to fluid through a measuring instrument provided on a side surface of the offshore structure,
Characterized in that the measuring instrument is an electric sensor or an optical sensor.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
The second step comprises:
Characterized in that the IMU is used to actually measure the external and internal forces of the fluid flow on the offshore structure,
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
The data on the response of the offshore structure in the third step may include,
And at least one of a traveling direction of the ship, a forward / backward left / right slope, a draft, and a trim when the offshore structure is a ship.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
In the third step,
The data on the response of the offshore structure,
Wherein the structure includes at least one of an operating direction, a forward / backward slope, and a draft of the structure when the offshore structure is a temporary fixing structure.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
In the second step,
Characterized in that the direction and speed of the algae and the currents are measured according to the space and time according to the depth of water,
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
In the second step,
Characterized by measuring data comprising the natural frequency, harmonic frequency and fluid characteristics of the offshore structure due to the flow of the fluid,
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
In the first step,
Wherein the database storing the lookup table is a navigation recorder (VDR) provided in the offshore structure.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. delete The method according to claim 1,
The fourth step
Wherein at least one of a rudder, a thruster, a propeller, a sail, a stern, or a balloon is used to control a posture or a navigation route of an offshore structure in real time.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
In the fourth step,
If the offshore structure is a ship,
And controlling the direction of the rudder so that the resultant force of the internal and external forces with the propulsive force becomes the desired traveling direction, according to the predicted data of the response of the offshore structure.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
When the offshore structure is a temporary fixed structure,
Wherein the control unit controls the trusser so as to maintain the current position with the resultant force with the internal and external forces being minimized according to the predicted data of the response of the offshore structure,
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
The offshore structure includes a helideck,
In the fourth step,
The posture of the offshore structure is controlled through DP (Dynamic Positioning) and DM (Dynamic Motioning) so as to maintain the equilibrium of the heliadec or mitigate the impact when the helicopter is taken off and landing, Changing the center of gravity, storing the balance state information of the helideck in the database,
The center of gravity of the offshore structure is changed by adjusting the angle of 6 degrees of freedom including the trim so that the equilibrium can be maintained in accordance with the intended purpose of the offshore structure (helicopter landing, separation, liquefaction process, etc.) The present invention relates to a fuel saving and safe operation method by predicting and monitoring the external force, hull stress, 6-degree-of-freedom motion and operating position in a hydrodynamic environment for a real-time offshore structure.
16. The method of claim 15,
Storing the balance state information of the helideck according to the control of the posture of the offshore structure in the database,
The database transmits balance state information of the helideck to an external structure information server through a communication unit,
Wherein the structure information server provides the helicopter with the positional information of the offshore structure having the equilibrium state information of the helideck that the helicopter can take off from and take off from among the plurality of offshore structures.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
Data on the external and internal forces of the fluid flow on the offshore structure,
Characterized in that it is data on a vector of ocean currents and algae, measured by a pressure sensor installed on the side of the offshore structure,
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. 18. The method of claim 17,
Wherein the plurality of pressure sensors are installed at predetermined intervals on a side surface of the offshore structure,
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. 18. The method of claim 17,
Wherein the plurality of pressure sensors are installed on the side of the offshore structure with a height difference,
Characterized by analyzing the presence or absence of data measurement from the pressure sensor and acquiring peak data through data from a pressure sensor located at the uppermost position,
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. 20. The method of claim 19,
At least three pressure sensors of the plurality of pressure sensors are formed as one three-dimensional pressure sensor module,
Wherein the three-dimensional pressure sensor module acquires three-dimensional vector information of the current and the algae
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
The second step comprises:
Further comprising a second step of measuring at least one of at least one of a wave, a wave period, a wave velocity, and a wave direction of a distant wave from the ocean structure by the meteorological measuring equipment and storing the measured wave in the database
Wherein the meteorological measuring equipment is at least one of a wave radar, a directional waverer, a sea level monitor, an ultrasonic level meter, a wind direction anemometer,
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
The offshore structure includes a ballast tank,
And a sloshing suppressing unit provided on each of both sides of the ballast tank to reduce a sloshing phenomenon in the ballast tank.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method of claim 22, wherein
Wherein the sloshing suppressing portion suppresses the sloshing phenomenon by narrowing the opening area of the cross section in one horizontal cross section of the ballast tank
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
The offshore structure includes a ballast tank,
In the fourth step,
And controls the posture of the offshore structure by moving the ballast water (water) loaded on the ballast tank opposite to the tilted direction when a tilt occurs
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. 25. The method of claim 24,
In the ballast tank,
And a partition wall dividing the inside of the ballast tank,
Wherein the partition is provided with an opening and closing part for moving the ballast water into the other compartment and a pump for controlling the moving speed and the moving direction of the ballast water is provided inside the opening and closing part.
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. The method according to claim 1,
The weather information server transmits measurement data of the internal and external forces in the step 2 to the external weather information server, and the weather information server compares the weather information received from the satellite with the measurement data of the internal and external forces to store the weather information correction data Characterized in that
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. 27. The method of claim 26,
And provides the weather information modification data to the external user terminal in response to a request from an external user terminal connected to the weather information server
Fluid mechanics for real-time offshore structures Fuel saving and safe operation methods through predictive monitoring and predictive control of external forces, hull stress, 6 degrees of freedom motion and operating position. Data on the external and internal forces exerted by the flow of fluid outside the offshore structure on the offshore structure and data on the response of the offshore structure on the basis of the internal and external forces are generated through a linear test in the water tank to generate a lookup table, A first step of storing;
A second step of measuring the internal and external forces using the time-of-flight method in the actual navigation of the offshore structure and storing measurement data in the database;
Wherein the lookup table is recorded in a one-year-unit time-series data, wherein the look-up table is obtained by comparing the one-year unit time series data accumulated up to the previous year with the measurement data of the second step, Step 2-1 of modifying the look-up table;
A third step of comparing the measurement data of the internal and external forces of the second stage with the data of the internal and external forces accumulated in the look-up table of the first stage to predict the data of the response of the marine structure;
A third step of measuring the response of the actual ocean structure;
The data of the response of the offshore structure measured in the step 3-1 and the data of the reaction of the offshore structure predicted in the third step are compared and when the difference is generated, (3-2) modifying the data on the response of the offshore structure in the lookup table generated in the first step with the data on the offshore structure;
A fourth step of acquiring maintenance data for an offshore structure through virtual simulations of the data stored in the lookup table; And
Wherein the actual simulation data of the virtual simulation is reflected to compare the reaction result numerical value obtained as a result of the virtual simulation with the reaction chamber measurement value of the real time offshore structure and to correct the data of the response of the offshore structure, And a fifth step of correcting and supplementing the numerical model by reflecting the second numerical model.
A method for providing maintenance information through predictive monitoring of external forces, hull stress, 6 degrees of freedom motion and operating position in a hydrodynamic environment for real time offshore structures. 29. The method of claim 28,
After the fourth step, the ocean structure control information is generated as a simulator by an FSI program (Fluid Structure Interaction), and the actual response of the ocean structure acquired in the step 3-1 by the situation recognition middleware And generating an algorithm for automatically controlling the offshore structure in real time in association with data on the offshore structure,
The data on the response of the offshore structure,
Strain, strain, crack, vibration, frequency, corrosion, or erosion,
In the fourth step, a numerical analysis program using a finite element analysis (FEM) method and computational fluid dynamics (CFD) is used to analyze the gas leakage and gas diffusion which may occur according to the behavior and structural change of the offshore structure And generates a maintenance information in cooperation with a situation analysis module in which data on a virtual situation such as fire or explosion and data on a countermeasure according to the virtual situation is stored.
A method for providing maintenance information through predictive monitoring of external forces, hull stress, 6 degrees of freedom motion and operating position in a hydrodynamic environment for real time offshore structures.
29. The method of claim 28,
The maintenance data of the fourth step includes:
Wherein the at least one of the at least two of the at least two of the plurality of the at least one of the plurality of the plurality of the at least one at least one of the plurality of the at least two of the plurality of the at least one of the plurality
A method of providing maintenance information through monitoring of external forces, hull stress, 6 degrees of freedom movement and operating position in a hydrodynamic environment for real time offshore structures. 29. The method of claim 28,
The maintenance data includes:
Wherein the maintenance information includes at least one of position information requiring maintenance, maintenance cost information, maintenance time information, or remaining life information of each structure.
A method of providing maintenance information through monitoring of external forces, hull stress, 6 degrees of freedom movement and operating position in a hydrodynamic environment for real time offshore structures. In addition to collision prevention, radar, IMU, GPS measurement, and X-band radar, wave, wave, and wave motion are predicted, and at least one IMU is used to measure 6 degrees of freedom motion of ocean structures as well as hogging, , Torsion. By using the time and spatial information acquisition tool, it is possible to reduce the fatigue of the offshore structures by linking the data of radar and IMU with the data of the moving distance of the offshore structure and the coordinate measurement satellite, and the EEOI / EEDI / DP The hydrodynamic environmental forces on real-time offshore structures, which are replaced by algorithms and simulators of the prediction procedure, reflected in Boundary / MC Boundary / Risers (SCR, TTR, Tendon) / Lowering / ROV / Stress, 6 degrees of freedom, and control through predictive monitoring of operating positions.
33. The method of claim 32,
Radar is used to measure the speed and direction of wave, wave, period, and wave. However, Radar's Polar image collection is not limited to 32. In order to perform real-time dynamic image processing, the first or oldest Polar image Wherein the real-time dynamic image processing is performed on the real-time offshore structure by deleting the real-time dynamic image processing. 33. The method of claim 32,
A method of controlling the prediction of the external force, hull stress, 6 degrees of freedom motion and operating position in a hydrodynamic environment for a real-time offshore structure, in which a crash prevention, a wave / 33. The method of claim 32,
It is possible to use real-time X-Band or S-Band collision avoidance radar, RF 1x2 splitter, RF amplifier or optical signal transmission and amplification function to extract wave, Control method through monitoring of external forces, hull stress, 6 degrees of freedom movement and operating position in hydrodynamic environment for offshore structures. 33. The method of claim 32,
A 6-degree-of-freedom motion compensated X / S-band wave radar, a wave height measuring sensor, a Doppler, a time of flight and an image overlay method. Stress, 6 degrees of freedom, and control through predictive monitoring of operating positions.

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