KR20200023112A - Water level control system using flight vehicle and water level control method for ship using the same - Google Patents

Abstract

According to the present invention, a water level control system using a flight vehicle includes: a ship having a ballast tank; a flight vehicle photographing a draft mark provided on the ship; a central control part controlling a fluid quantity stored in the ballast tank and calculating an estimated value of draft in accordance with the fluid quantity; and an image processing part analyzing an image photographed in the flight vehicle and deriving a present value of the draft, wherein the central control part can use the flight vehicle controlling the fluid quantity stored in the ballast tank with a comparison value comparing the expected value and the present value transmitted from the image processing part.

Description

WATER LEVEL CONTROL SYSTEM USING FLIGHT VEHICLE AND WATER LEVEL CONTROL METHOD FOR SHIP USING THE SAME}

The present invention relates to a water level control system using a flying body that measures the water level of the ship by using a flying body, and adjusts the draft of the ship, and a water level adjusting method of the ship using the same.

If the ship is not loaded with enough cargo during operation, the propeller and rudder may not work effectively in the water and may work out of the water. Therefore, in order to maintain the equilibrium of the ship and to achieve the optimum speed and efficiency, the seawater is filled in the ballast tank in the ship to maintain an appropriate draft.

The seawater filled in the ballast tanks is called ballast water and is used to control the weight distribution in marine vessels. By adjusting the weight distribution, it is to increase the balance and stability of the ship.

In general, ballast water is placed on board before leaving the loading port and discharged offboard prior to entering the loading port or loading the cargo. This ballast water is supplied by a pump or the like and received in a closed compartment inside the ship. Therefore, the ballast water is continuously injected or discharged in the process of loading and discharging cargo on the ship, and the ballast water is moved together when the ship moves.

On the other hand, ships in which the ballast water is filled involve a process of visually checking the marking of the outer wall of the ship by using a barge to check the level of the ship. The ship can adjust the level of the bow, the stern, the port and starboard because the amount of fluid stored in the ballast must be checked every time to adjust the level of the ship.

Visual inspection using a barge requires a ship for inspection, but it is difficult to find a ship at the right place whenever needed. If the ship could not be obtained, the accuracy of the measurement was reduced by checking only the direction of docking on the quay wall. Especially when the weather is bad, it is essential to check the water level. In bad weather environment, there was a risk that a person should check the water level directly outside the hull. In addition, in various tests, such as the pre-delivery slope test of the ship, the operator manually measured and managed the water level of each part of the hull. In this case, the reliability of the measured value fell.

Korean Unexamined Patent Publication No. 10-2010-0097727 (2010.09.03.)

An object of the present invention is to provide a water level control system using a vehicle that checks the water level of the hull by using a vehicle and adjusts the draft of the hull, and a method of controlling the water level using the same.

According to an aspect of the present invention, a ballast tank is provided; A vehicle photographing a draft mark provided on the vessel; A central control unit which adjusts the amount of fluid stored in the ballast tank and calculates an expected draft value according to the amount of fluid; And an image processing unit for deriving a draft current value by analyzing the image photographed by the vehicle, wherein the central controller is stored in the ballast tank as a comparison value comparing the expected value and the present value transmitted from the image processing unit. It includes a level control system using a vehicle to control the amount of fluid to be made.

The comparison value is calculated by transmitting the expected value from the central controller to the image processor and comparing the expected value with the current value by the image processor. The calculated value is transferred from the image processor to the central controller. Can be.

The central control unit further includes an alarm signal unit for generating an acoustic alarm signal so that an administrator can check if the expected value and the present value do not match.

The image processing unit further comprises a monitoring unit for the administrator to check in real time the process of matching the expected value and the current value.

According to another embodiment of the present invention, the photographing step of taking a picture of the draft mark provided on the vessel by the aircraft; Deriving a current value of draft by analyzing an image photographed by the vehicle by an image processor; Calculating an expected draft value at a central controller for controlling the amount of fluid stored in the ballast tank provided in the vessel; And a level control method of the ship controlling the amount of fluid stored in the ballast tank by the central controller as a comparison value comparing the expected value and the present value transmitted from the image processor.

In the water level control system using a vehicle according to the present invention and a water level control method of the vessel using the same, the current value of the draft of the vessel using the aircraft in real time, calculates the draft value for the amount of fluid stored in the ballast tank, The water level of the ship can be easily adjusted by repeatedly re-adjusting the amount of fluid stored in the ship's ballast tank against the current and expected draft levels. In addition, the real-time monitoring system using the aircraft can be fed back (feed back) the results in real time, it is helpful to ensure the safety before ship delivery.

1 shows a water level control system using a vehicle according to an embodiment of the present invention.
Figure 2 illustrates the interrelation of each part of the water level control system using a vehicle according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments introduced below are provided as examples to sufficiently convey the spirit of the present invention to those skilled in the art to which the present invention pertains. The invention is not limited to the embodiments described below and may be embodied in other forms. Parts not related to the description are omitted in the drawings in order to clearly describe the present invention, in the drawings, the width, length, thickness, etc. of the components may be exaggerated for convenience. Like numbers refer to like elements throughout.

1 shows a level control system using a vehicle according to an embodiment of the present invention, Figure 2 shows the interrelation of each part of the level control system.

Referring to the drawings, the water level control system according to an embodiment of the present invention, the vessel 110 is provided with a ballast tank, the aircraft 140 for photographing the draft of the draft provided on the vessel 110, the fluid stored in the ballast tank The central control unit 120 adjusts the amount and calculates the draft value according to the fluid amount, and an image processor 130 for analyzing the image taken by the aircraft 140 to derive the present draft value, the central controller The control unit 120 may control the amount of fluid stored in the ballast tank as a comparison value in which the expected value and the current value transmitted from the image processor 130 are compared.

The vessel 110 may be an offshore structure, such as an LNG carrier for transporting or storing a liquid cargo such as LNG on the sea, a vessel such as an LNG RV, or an offshore plant such as an LNG FPSO or an LNG FSRU. In addition, the vessel 110 may be composed of a double hull (outer hull) and the inner hull (inner hull).

The movement of the vessel 110 usually produces six degrees of freedom movement as shown in FIG. 1. 6 degrees of freedom motion is shaken about the X direction axis which is the forward direction when the forward direction is X direction, the vertical direction Z direction and the lateral direction Y direction based on the longitudinal center of gravity of the ship 110 (rotation) Roll 1a, surge 1b pushed forward and backward with respect to the X direction, pitch 1c swinging about the Y-axis axis that is the lateral direction of the ship 110, and Y direction Sway (1d) is pushed back and forth (i.e., the side of the vessel 110) with respect to the yaw (1e), which is shaken about the Z-axis axis in the vertical direction of the vessel 110, Z And heavy (f) motions that are pushed up and down relative to each other.

On the other hand, when the cargo 110 is not sufficiently loaded on the vessel 110 during operation of the propeller and the rudder may not operate effectively in the water can operate outside the water. Therefore, in order to maintain the balance of the above six degrees of freedom movement of the ship 110 and to achieve the optimum speed and efficiency when the ship 110 operates, a ballast tank (not shown) in the ship 110 is filled with seawater to be appropriate. Keep your draft.

This ballast tank is located inside the vessel 110, the seawater filled in the ballast tank is called ballast water, it is used to adjust the weight distribution in the marine vessel (110). By adjusting the weight distribution is to maintain the balance and stability of the vessel (110). At this time, the vessel 110 may be adjusted the level of the bow, stern, port, starboard by using the fluid amount of the ballast number, when the water level adjustment is performed by hand, the water level expected value and the vessel ( There was a hassle to check the actual water level present value of 110, each time, in the present invention by using the aircraft 140 to measure the actual water level present value of the vessel 110 to solve the above-mentioned hassle.

The aircraft 140 is a photographing means that is remotely controlled or autonomous flying provided with an image photographing apparatus, and can check in real time the ship level of the vessel filled with the above-mentioned ballast number in real time. Such a vehicle 140 may be a drone that is a military or drone-shaped military drone capable of flying and manipulating by induction of radio waves without a pilot. At this time, a separate remote controller for controlling the drone is provided, and can be operated by an operator.

The central control unit 120 is a loading computer, and may be provided to handle loading and discharge of cargo. The central control unit 120 is a device that can control the amount of fluid in the ballast during operation, implements a reliable system for the calculation and control of loading, ship stability, strength and simulation of various cargoes including the ballast number.

On the other hand, the central control unit 120 may be provided with an alarm signal unit 150, the alarm signal unit 150 confirms the comparison value transmitted to the central control unit 120 and generates an acoustic alarm signal. That is, the alarm signal unit 150 may generate an acoustic alarm signal so that the administrator can check if the ship's 110 draft and the present value do not match.

As such, the central controller 120 performs a process for controlling the amount of fluid stored in the ballast tank, and the image processor 130 controls the vehicle 140 and compares the current value calculated through the image analysis with the expected value. Perform the process, which allows you to optimize the overall system process.

The image processor 130 may analyze real-time image information transmitted from the aircraft 140 and check the current value of the draft of the vessel 110 through the image processor 130. The monitoring unit 160 may be installed in the image processing unit 130. The monitoring unit 160 may check the process of comparing the expected value with the current value in the image processing unit 130 in real time.

On the other hand, the central control unit 120 is a fluid stored in the ballast tank as a comparison value that contrasts the vessel 110 draft expected value according to the fluid volume of the ballast number and the vessel 110 draft current value transmitted from the image processor 130. Quantity can be controlled. At this time, the comparison value is transmitted from the central controller 120 to the image processor 130, the image processor 130 is calculated by the image processor 130, and the calculated comparison value is transmitted back to the central controller 120 by the system. Can be implemented.

Hereinafter, with reference to Figure 2 will be described with respect to the water level control method of the vessel 110 level. In the water level control method of the ship according to an embodiment of the present invention, a photographing step in which the aircraft 140 photographs the draft mark provided on the vessel 110, the image taken by the aircraft 140 in the image processing unit 130 Analyzing and deriving the draft value, calculating the draft value in the central control unit 120 that controls the amount of fluid stored in the ballast tank provided in the vessel 110, and the estimated value and the image processor 130 And a process of controlling the amount of fluid stored in the ballast tank by the central controller 120 as a comparison value comparing the transmitted current value. It will be described in detail as follows.

First, real-time water level gauge information (draft gauge) is secured using a drone that is a vehicle 140. In addition, the image processor 130 analyzes the image secured by the vehicle 140 and derives the draft value of the vessel 110.

The central controller 120 (load computer) may adjust the amount of fluid stored in the ballast tank of the vessel 110, and transmits an expected draft of the vessel 110 according to the amount of fluid to the image processor 130.

The image processor 130 compares the draft and the present value, calculates the comparison value, and transfers the comparison value to the central controller 120. At this time, the manager may monitor in real time the process of comparing the expected value and the current value in the monitoring unit 160. This prevents rollover accidents that may occur due to ballast system failure and improves the reliability of the ballast system.

The central controller 120 may repeatedly readjust the amount of fluid stored in the ballast tank of the vessel 110 through the comparison value calculated by the image processor 130. Accordingly, the result value may be fed back in real time through a real-time monitoring system using the vehicle 140. This is a great help in securing safety before ship delivery.

Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and those skilled in the art may realize various modifications and other equivalent embodiments therefrom. I can understand. Therefore, the true scope of the invention should be defined only by the appended claims.

110: ship 120: central control unit
130: image processing unit 140: aircraft
150: alarm signal unit 160: monitoring unit

Claims (5)

A vessel provided with a ballast tank;
A vehicle photographing a draft mark provided on the vessel;
A central control unit which adjusts the amount of fluid stored in the ballast tank and calculates an expected draft value according to the amount of fluid; And
And an image processor for analyzing the image photographed by the aircraft to derive a draft current value.
And the central controller controls a fluid amount stored in the ballast tank as a comparison value comparing the expected value and the current value transmitted from the image processor. The method of claim 1,
The comparison value is calculated by transmitting the expected value from the central controller to the image processor and comparing the expected value with the current value by the image processor. The calculated value is transferred from the image processor to the central controller. Level control system using a flying vehicle. The method of claim 1,
And the central controller further comprises an alarm signal unit for generating an acoustic alarm signal so that an administrator can check if the expected value and the present value do not match. The method of claim 2,
And a monitoring unit which allows a manager to check in real time the process of collating the expected value with the current value in the image processing unit. A photographing step in which the aircraft photographs a draft mark provided on the vessel;
Deriving a current value of draft by analyzing an image photographed by the vehicle by an image processor;
Calculating an expected draft value in a central control unit for adjusting the amount of fluid stored in the ballast tank provided in the vessel; And
And a control value of the fluid stored in the ballast tank by the central controller as a comparison value comparing the expected value and the current value transmitted from the image processor.

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