KR20140043227A - Simulation system for simuliting a dynamic positioning system - Google Patents

Abstract

The present invention relates to a simulation system for simulating a dynamic positioning system (DPS), which can increase the accuracy of a DPS simulation using a measurement value measured by an instrument as a value used in maintaining the position of a floating structure. According to an embodiment of the present invention, the provided simulation system comprises: a measuring instrument which measures at least one kind of information related to the position maintenance of a floating offshore structure; a controller which outputs a control signal to multiple position adjusting devices installed in the floating offshore structure using the measurement value measured by the instrument; a control station which is connected with the controller; and a simulator which simulates the performance of a position maintenance system installed in the floating structure according to the measurement value measured by the measuring instrument. [Reference numerals] (111) Position measuring device; (112) Air volume measuring device; (113) Motion measuring device; (114) Gyroscope; (120) I/O module; (130) DP controller; (140) Control station; (150) DPS simulator; (160) Position adjusting device

Description

[0002] SIMULATION SYSTEM FOR SIMULATION A DYNAMIC POSITIONING SYSTEM [0003]

The present invention relates to a simulation system for simulating a DPS, and more particularly, to a simulation system for simulating a DPS capable of improving the accuracy of a DPS simulation by using a measurement value measured from a meter used for maintaining the position of a floating structure ≪ / RTI >

In recent years, due to rapid industrialization and industrial development, limited global resources are gradually getting out of the way, and the stable production and supply of crude oil has become a very important issue.

Recently, along with the development of oil exploration technology on the seabed, large oil companies have felt the necessity of drilling rig with drilling facilities suitable for development of marginal field or deep sea oil field, It is a reality that is actively searching for development.

Floating structures such as floating production storage off-loading (FPSO) and drill ship that can refine and store oil and gas existing in the ocean under the sea are gradually increasing. This float structure is characterized by its long operation at a certain position. Therefore, it is possible to develop a safer oil field as the swing or fluctuation due to the sweeping of the tide, the wind direction and the wind speed is smaller. In addition, The shorter the time and the easier it is to operate, the better. At this time, the change of the position due to the swing of the ship due to the algae, wind direction, wind speed, and digging can be solved by a dynamic positioning system (DPS).

However, the simulator that simulates the DPS is installed independently from the DPS, and the external information such as position, wind, algae, and digging used in the DPS is inputted by the user arbitrarily.

Therefore, the conventional DPS simulator has a problem that the accuracy of the simulation is low because the user arbitrarily adjusts the environmental change in the sea, and tests the performance of the DPS and predicts the behavior.

It is an object of the present invention to provide a simulation system for simulating a DPS that can increase the accuracy of a DPS simulation by using a measurement value measured from an instrument for a value used for maintaining the position of a floating structure.

According to an embodiment of the present invention for achieving the above object, a measuring instrument for measuring at least one information relating to maintaining the position of the floating offshore structure, and installed in the floating offshore structure using the measured value measured from the measuring instrument And a controller for outputting a control signal to a plurality of positioning devices, an operation station connected to the controller, and a simulator for simulating the performance of the positioning system installed in the floating structure according to the measured value measured from the measuring instrument. Characteristic simulation system is provided.

Preferably, the meter includes a differential position or position meter, an airflow meter, a gyroscope and an exercise meter.

Further, the simulation system according to the embodiment of the present invention includes a communication line connecting between the simulator and the operation station, wherein the simulator transmits the measurement value .

The communication line is preferably an Ethernet cable.

Preferably, the operation station is connected to a hub, and an Ethernet cable connected to the simulator is connected to the hub.

In addition, the simulation system according to an embodiment of the present invention includes a communication line connecting the simulator and the control period, the simulator preferably receives the measurement value from the controller via the communication line.

Further, the simulation system according to the embodiment of the present invention includes a plurality of communication lines for connecting the simulator and the plurality of sensors provided in the measurement unit, respectively, wherein the simulator is capable of measuring from the measurement unit via the plurality of communication lines It is desirable to directly receive the measured values.

Preferably, the communication line is a serial cable.

According to the embodiment of the present invention, the accuracy of the DPS simulation can be improved by using the measurement value measured from the meter used for maintaining the position of the floating structure.

Further, according to the embodiment of the present invention, when the supplier supplying the location maintenance system and the supplier supplying the simulator are the same, an additional Ethernet cable is connected to the hub connected to the operation station, thereby connecting the DPS simulator to the operation station So that it is possible to receive the measured value of the measuring instrument.

In addition, according to the embodiment of the present invention, when the vendor supplying the position maintenance system and the simulator are different, communication between the DP controller and the DPS simulator is enabled through the DP controller and the serial cable, Can be received.

According to the embodiment of the present invention, the measurement value is received by the DPS simulator through the serial cable directly from the instrument, so that the measurement value can be received faster than the measurement value is received from the operation station or the DP controller. There is also an effect that can be done.

1 is a diagram for explaining a simulation system for simulating a DPS according to an embodiment of the present invention,
FIG. 2 is a view showing the DPS shown in FIG. 1;
3 is a diagram for explaining a simulation system for simulating a DPS according to another embodiment of the present invention, and Fig.
4 is a diagram for explaining a simulation system for simulating a DPS according to another embodiment of the present invention.

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

1 is a diagram illustrating a simulation system for simulating a DPS according to an embodiment of the present invention.

Referring to FIG. 1, a simulation system for simulating a DPS according to an embodiment of the present invention includes a meter 110 for measuring information necessary for position control of a floating structure, a controller for generating a control signal for the positioning of the structure (1 30) (hereinafter, "DP controller" referred to), and is connected to the DP controller 130, the operation of displaying the information received from the DP controller 130 A station 140 and a simulator 150 (hereinafter referred to as a DPS simulator) for simulating DPS performance and behavior using information used for position control of the floating structure, that is, measured values measured from the measuring instrument 110, As shown in FIG. At this time, an I / O module 120 is provided between the DP controller 130 and the measuring instrument 110.

Floating structures to which DPS, a dynamic positioning system is applied, include drillships, icebreakers, drilling rigs, shuttle tankers, etc., which need to perform self-position control using a thruster. shuttle tankers, floating production storage offloading (FPSO), LNG-regasification vessels (LNG-RVs), polar navigation vessels and passenger ships.

The instrument 110 includes a position measuring instrument 111, an air flow meter 112, a motion measuring instrument 113, a gyroscope 114, and the like. The measuring instrument 110 shown in FIG. 1 may further include an unillustrated crest sensor, a bird sensor, and the like. The peaking and algae sensors are not directly used for position control of the structure but are transmitted to the operating station 140 to monitor the degree of digging and algae.

The position meter 111 may be a GPS or a Differential GPS (DGPS). The position measuring unit 111 measures the position of the floating structure and outputs the corresponding electrical signal to the DP controller 130. In this embodiment, for example, the position of the floating structure can be confirmed by using a GPS (Global Positioning System) or the like, and various sensors for confirming the position of the floating structure can be included.

In addition, the position measuring unit 111 measures a relative position to the floating structure and outputs a corresponding electric signal to the DP controller 130, such as a fan beam, Cyscan (using laser reflection), Artemis or RadaScan (using microwave reflection) And a Sensor (using underwater sound waves).

The air flow meter 112 measures the wind direction and the wind speed and outputs the corresponding electrical signal to the DP controller 130.

The motion measuring instrument (Motiuon Reference Uint, MRU) 113 measures the attitude of the floating structure, that is, pitch, roll, and heave, and outputs the corresponding electrical signal to the DP controller 130.

The gyroscope 114 measures the heading angle of the floating structure and outputs the corresponding electrical signal to the DP controller 130.

The DP controller 130 outputs to the position adjusting device 160 a control signal for maintaining the floating position of the floating structure on the basis of the external force information output from the measuring device 110. [ The DP controller 130 also receives an operator's command through the operation station 140. [ In this embodiment, the DP controller 130 can be implemented as a PLC (Programmable Logic Controller).

The position adjusting device 160 includes a propeller, a thruster, a rudder, and the like. The propeller maintains its position in the forward and backward directions of the floating structure, and the thrust is controlled by the DP controller 130. The thruster maintains the position of the floating structure in the left-right direction, and the thrust is controlled by the DP controller 130. In particular, a thruster is an all-directional propulsion unit mounted on a plurality of, for example, aft and fore, so that the propeller can be rotated 360 degrees on a floating structure, and the floating structure is freely propelled, Generate thrust. The rudder adjusts the direction of rotation of the floating structure and is controlled by the DP controller 130.

2, the DP controller 130 receives a detection signal from the position measuring instrument 111 and controls the thruster T so that the ship 200 stops at a target point. For this purpose, the position controller A ship motion prediction unit 132 for predicting the motion of the ship 200 through a signal processed by the signal processing unit 131, A controller 133 for controlling the thruster T according to the result of the wind speed sensor 132, a wind force calculating section 135 for calculating the wind force through the wind speed measured from the wind amount meter 112, And a thruster distribution unit 136 that receives a signal for control of the thruster T and a signal for wind power from the wind power calculation unit 135 to distribute the thrust of the thruster T. [

1 again, the DP controller 130 transmits the measurements received from the meter 110 to the operator station 140. [

The operator station 140 may collect measurements used to control the position of the floating structure transmitted from the DP controller 130 and display the collected measurements. Accordingly, the operator can monitor the attitude, pitch, rudder angle, and RPM input from the motion measuring instrument 11 3 and the position adjusting device 160.

The operation station 140 also transmits the measurement values collected from the DP controller 130 to the DPS simulator 150 via the communication line L. [ The operation station 140 and the DPS simulator 150 are connected by an ethernet cable.

The communication line L connecting the operation station 140 and the DPS simulator 150 is provided in the present embodiment so that the measurement value of the meter 110 is transmitted to the DPS simulator 150 at the operation station 140. Accordingly, the DPS simulator 150 can receive the measured values of the measuring instrument 110, that is, the position, the wind direction, the wind speed, the attitude, the heading angle, and the like via the communication line L connected to the operation station 140.

The DPS simulator 150 may receive the actual measurement value measured by the meter 110 without inputting the direct measurement value and may simulate the performance of the DPS based on the received measurement value. Also, the DPS simulator 150 can simulate the performance of the floating structure as well as the performance of the DPS. Thus, the behavior of the floating structure can be predicted based on the actual measurement values that can be generated at the sea, and the performance and the behavior of the DPS that is simulated according to the measurement value measured by the measuring instrument 110 can be instructed to the DPS operator.

The performance of the DPS includes information indicating whether the target is held against an external force, that is, a measured value measured from the measuring instrument 110, and whether the current target is maintained when, for example, one of four thruster Information and the like.

The operation station 140 is connected to the hub H and can communicate with the DP controller 130 and the DPS simulator 150 via the hub H. [ That is, the DPS simulator 150 can communicate with the operation station 140 by connecting the Ethernet cable L to the hub H. Accordingly, the DPS simulator 150 can receive the measurement values of the measurement instrument 110 collected at the operation station 140. In this way, only the Ethernet cable L is connected to the hub H so that information can be shared between the operation station 140 and the DPS simulator 150. Since only the Ethernet cable L is connected to the hub H to connect the operation station 140 and the DPS simulator 150, it is easy to transfer data from the operation station 140 to the DPS simulator 150.

In FIG. 1, one operating station 140 is connected to the hub H, but the present invention is not limited thereto, and a plurality of operating stations may be connected.

1, when the maker of the operation station 140 and the maker of the DPS simulator 150 are the same, the operation station 140 and the DPS simulator 150 are connected to the communication line L so that the operation station 140 Information, for example, the measurement values of the measuring instrument 110 can be shared by the DPS simulator 150. However, if the vendor is not limited to the environment of FIG. 1, Environment.

3, a communication line L is provided between the DPS simulator 150 and the DP controller 130 so that the measured value of the measuring instrument 110 is supplied from the DP controller 130 to the DPS simulator 150). ≪ / RTI > At this time, the communication line (L) is a serial cable.

Thus, if the vendor is different, the DP controller 130 may share the measured value of the instrument 110 with the DPS simulator 150.

More specifically, when the package supplier is divided into a package composed of equipment for the position control system and equipment for simulating the DPS, a case where the supplier supplying the two packages is the DPS simulator (H) connected to the operation station 140 The DP controller 130 and the DPS simulator 150 are connected to each other by a serial cable to connect the DPS simulator 150 to the DPS controller 150. [ (130) and the DPS simulator (150), that is, communication between different types of communication.

Figure 4 is a first and, unlike the embodiment of Figure 3, DPS simulator first to fourth communication line between the 150 and the instrument (11, 0), (L1, L2, L3, L4) are provided with the instrument (11 0 The measured values measured from the position measuring instrument 111, the air flow meter 112, the motion measuring instrument 113 and the gyroscope 114 provided in the DPS simulator 150 can be directly received by the DPS simulator 150 via respective communication lines And the like. At this time, the first to fourth communication lines L1, L2, L3 and L4 are serial cables.

The measurement value can be received quickly as compared with receiving the measurement value from the DP controller 130 or the operation station 140 by the structure in which the measuring instrument 110 and the DPS simulator 150 are directly connected. The DP controller 130 or the operation station 140 requires processing time of the signal.

In this way, by receiving the measured value of the measuring instrument 110 from the operation station 140 or the DP controller 130 or by directly receiving the measured value measured by the measuring instrument 110, the performance of the DPS is simulated, You can improve the accuracy of the simulation compared to simulating DPS performance while tuning.

The invention being thus described, it will be obvious that the same way may be varied in many ways. Such modifications are intended to be within the spirit and scope of the invention as defined by the appended claims.

110: measuring instrument 111: position measuring instrument
112: Air volume meter 113: Exercise meter
114: Gyroscope 120: I / O module
130: DP controller 140: Operation station
150: DPS simulation H: Hub
L: communication line

Claims (8)

An instrument for measuring at least one piece of information relating to the maintenance of the position of the floating offshore structure;
A controller for outputting a control signal to a plurality of position adjusting devices installed in the floating offshore structure using the measured values measured from the measuring instrument;
An operating station connected to the controller,
And a simulator for simulating the performance of the position maintaining system installed in the floating structure according to the measured value measured from the measuring instrument. The method according to claim 1,
The meter
A differential position meter or position meter, an air flow meter, a gyroscope and an exercise meter. The method according to claim 1,
And a communication line connecting the simulator and the operation station,
Wherein the simulator receives the measurements from the operator station through the communication line, the measurements being collected through the controller. The method of claim 3,
The communication line is a simulation system, characterized in that the Ethernet cable. The method of claim 4,
The operation station is connected to a hub,
The simulation system, characterized in that the Ethernet cable connected to the simulator is connected to the hub. The method according to claim 1,
And a communication line connecting the simulator and the control period,
Wherein the simulator receives the measurements from the controller via the communication line. The method according to claim 2,
Including a plurality of communication lines for connecting each of the plurality of sensors provided in the simulator and the measurement unit,
The simulator is a simulation system, characterized in that for receiving the measured value directly from the measuring unit via the plurality of communication lines. The method according to claim 6 or 7,
The communication line is a simulation system, characterized in that the serial cable.

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