KR102059850B1 - System and method for receiving and transmitting underwater detection - Google Patents

Abstract

An objective of the present invention is to provide a transmission and reception system and method for seafloor exploration, which may explore the shallow seabed and deep seabed at the same time through single exploration. According to the present invention, the transmission and reception system for seafloor exploration comprises: a strimer cable consisting of three current electrodes and a plurality of potential electrodes; and a vessel towing the strimer cable.

Description

Sea floor exploration transmission and reception system and transmission method {SYSTEM AND METHOD FOR RECEIVING AND TRANSMITTING UNDERWATER DETECTION}

The present invention relates to a bottom exploration transmission and reception system and a transmission and reception method, and more particularly, to a bottom exploration transmission and reception system and a transmission method capable of simultaneously scanning a shallow seabed and a deep seabed through a single exploration.

Generally, sound waves or electromagnetic waves are used to locate unmanned submersibles or submarines operating underwater.

The use of sound waves among the methods for detecting underwater objects is disclosed as a device for detecting underwater objects in Korean Patent Laid-Open Publication No. 1999-0078351.

However, the apparatus for detecting underwater objects using the sound waves has a problem that it is difficult to detect underwater objects using sound waves in areas with high tidal current and areas where water layers with temperature and salinity are mixed.

The use of electromagnetic waves among the methods of detecting underwater objects is disclosed in US Patent No. 5,598, 152 as a mine detection system using electromagnetic waves.

However, the mine detection system using electromagnetic waves is a method of detecting mines sequentially while the underwater vehicle (AUV) moves, but is suitable for detecting stationary mines, but not suitable for detecting moving objects.

Accordingly, in order to solve the problems of the preceding patents, Korean Patent Registration No. 1,521,473 has been devised by the Korea Institute of Geoscience and Mineral Resources, the applicant of the present invention.

The patent of the Korea Institute of Geoscience and Mineral Resources discloses an underwater detection device that can detect moving objects even in areas with high algae and areas where water layers with temperature and salinity differences are mixed.

This is a method and system for artificially forming an electric field by flowing an electric current in water, and measuring and detecting an electric field disturbance caused by an underwater object.

Typical offshore traction electrical resistance exploration is towing a streamer cable consisting of two current electrodes and several potential electrodes.

1 is a view showing the configuration of a sea floor exploration transmission and reception system according to the prior art.

Referring to FIG. 1, in the conventional sea bottom exploration transmission / reception system 100, the ship 1 is towing a streamer cable including two current electrodes 200 and eleven potential electrodes 300.

Here, when the distance between the current electrode 200 and the potential electrode 300 is a, it is possible to explore the seabed 3 having a depth of about 4a.

In addition, when the distance between the current electrode 200 and the potential electrode 300 is 4a, it is possible to explore the deeper seabed 3 above about 4a deep.

However, in the related art, the exploration of the shallow seabed and the exploration of the deep seafloor are made, respectively, so that the exploration paths do not coincide with each other, thereby degrading the quality and resolution of the data, thereby lowering the reliability of the data.

Republic of Korea Patent Publication No. 10-1521473 (2015.05.21. Notification)

An object of the present invention for solving the conventional problems as described above is to provide a bottom seam exploration transmission and reception system and a method for transmitting and receiving a shallow seabed and deep seabed at the same time through a single exploration.

In order to achieve the above object, the sea floor exploration transmission and reception system according to the present invention, a streamer cable consisting of three current electrodes and a plurality of potential electrodes; And a vessel for towing the streamer cable.

Further, in the sea bottom exploration transmission and reception system according to the present invention, the three current electrodes are a transmitter, and the plurality of potential electrodes are receivers.

In addition, in the sea bottom exploration transmission and reception system according to the present invention, the transmitter is characterized in that connected to the three-phase H-bridge circuit by the streamer cable.

In addition, in the bottom exploration transmission and reception system according to the present invention, the material of the current electrode and the potential electrode is characterized in that the graphite (Graphite).

In addition, in the sea bottom exploration transmission and reception system according to the present invention, the three-phase H-bridge circuit is characterized by consisting of six Sic MOSFETs.

On the other hand, in order to achieve the above object, the bottom exploration transmission and reception method according to the present invention, in the bottom exploration transmission and reception method in which the first to third current electrodes are connected to the three-phase H-bridge circuit by the streamer cable A first step (S100) of transmitting an A signal from the first current electrode and a second current electrode, a second step (S200) of receiving the transmitted A signal at a receiver including a plurality of potential electrodes; A third step S300 of transmitting a B signal at the first current electrode and a third current electrode; a fourth step S400 of receiving the transmitted B signal at the receiver; and data received by the receiver. And a fifth step (S500) of storing the data, and a sixth step (S600) of processing the stored data.

In addition, in the bottom exploration transmission and reception method according to the present invention, the A transmission and the B transmission is characterized in that it is made sequentially.

In addition, in the sea bottom exploration transmission and reception method according to the present invention, the time term between the A transmission and the B transmission is characterized in that 0.2 seconds to 0.4 seconds.

Specific details of other embodiments are included in "details for carrying out the invention" and the accompanying "drawings".

Advantages and / or features of the present invention and methods for achieving them will be apparent with reference to various embodiments described below in detail with the accompanying drawings.

However, the present invention is not limited to the configuration of each embodiment disclosed below, but may be implemented in a variety of different forms, each embodiment disclosed herein is to make the disclosure of the present invention complete, the present invention It is provided to fully inform the person skilled in the art the scope of the present invention, and it should be understood that the present invention is only defined by the scope of each claim of the claims.

According to the present invention, the shallow seabed and the deep seabed can be simultaneously explored through a single exploration.

1 is a view showing the configuration of a sea floor exploration transmission and reception system according to the prior art.
Figure 2 is a view showing the configuration of the sea floor exploration transmission and reception system according to the present invention.
Figure 3 is a flow chart showing the operation flow of the sea floor exploration transmission and reception method according to the present invention.
4 is a view showing the configuration of a three-phase circuit of the sea floor exploration transmission and reception system according to the present invention.
FIG. 5 is a graph showing a one-cycle simulation pattern of a three-phase circuit of the sea bottom exploration transceiving system according to FIG. 4.

Before describing the present invention in detail, the terms or words used in the present specification should not be construed as being limited to ordinary or dictionary meanings, and in order for the inventor of the present invention to explain his invention in the best way. Concepts of various terms may be properly defined and used, and furthermore, it is to be understood that these terms or words should be interpreted as meanings and concepts corresponding to the technical spirit of the present invention.

In other words, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting the teachings of the present invention. These terms are not intended to limit the scope of the invention. It should be understood that the term is defined in consideration.

In addition, in the present specification, the singular expressions may include the plural expressions unless the context clearly indicates otherwise, and the singular expressions may include the singular meanings even if the plural expressions are similar. .

Throughout this specification, when a component is described as "comprising" another component, the component may further include any other component rather than excluding any other component unless otherwise stated. It can mean that you can.

Furthermore, if a component is described as being "inside, or in connection with," another component, the component may be directly connected to or in contact with another component, The components may be spaced apart from each other, and in the case of spaced apart from each other, there may be a third component or means for fixing or connecting the components to other components. It should be understood that the description of the components or means of 3 may be omitted.

On the other hand, if a component is described as being "directly connected" or "directly connected" to another component, it should be understood that no third component or means exists.

Similarly, other expressions describing the relationship between each component, such as "between" and "immediately between", or "neighboring to" and "directly neighboring to", have the same purpose. Should be interpreted as

Also, in this specification, terms such as “one side”, “other side”, “one side”, “other side”, “first”, “second”, and the like, if used, refer to this one component for one component. It is used to clearly distinguish from other components, and it should be understood that such terms do not limit the meaning of the components.

In addition, terms related to positions such as “up”, “down”, “left”, “right”, etc., when used herein, should be understood to indicate relative positions in the corresponding drawings with respect to the corresponding components, if used. Unless an absolute position is specified with respect to these positions, these position related terms should not be understood as referring to an absolute position.

In addition, in the present specification, in designating the reference numerals for each component of each drawing, the same reference numerals refer to the same components so as to have the same reference numerals even though they are shown in different drawings, that is, the same reference numerals throughout the specification. The symbols indicate the same components.

In the accompanying drawings, the size, position, coupling relationship, etc. of each component constituting the present invention may be partially exaggerated or reduced or omitted in order to sufficiently convey the spirit of the present invention or for convenience of description. It may be described, so the proportion or scale may not be exact.

In addition, in the following, in describing the present invention, a detailed description of a configuration determined to unnecessarily obscure the subject matter of the present invention, for example, a known technology including the prior art, may be omitted.

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

2 is a view showing the configuration of a sea bottom exploration transmission and reception system according to the present invention.

2, the sea floor exploration transmission and reception system 1000 according to the present invention includes a streamer cable (C) and the vessel (1).

Here, the streamer cable C includes three current electrodes 401, 402, 403 and a plurality of potential electrodes 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511. do.

In the present invention, eleven potential electrodes 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511 are used for ease of description, but the number of potential electrodes is not limited thereto. Can be used.

However, it is preferable to use three current electrodes for connection with the three-phase H-bridge mentioned later.

In addition, the ship 1 serves to pull the streamer cable (C).

In addition, in the sea floor exploration transmitting and receiving system 1000 according to the present invention, three current electrodes 401, 402, 403 serve as the transmitter 400, and a plurality of potential electrodes 501, 502, 503, 504. , 505, 506, 507, 508, 509, 510, 511 serve as a receiver.

In more detail, the streamer cable C is installed in the form of a line in the water (for example, the bottom of the sea), and when a current is applied through the three current electrodes 401, 402, and 403 to approach an underwater ideal body such as a submarine. It outputs a corresponding electric field disturbance response detection signal.

The streamer cable C is equipped with a plurality of potential electrodes 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511 along the longitudinal direction, and the potential electrodes 501, 502. , 503, 504, 505, 506, 507, 508, 509, 510, 511, the electric field disturbance response value detection signal is output.

In order to improve the output data quality and resolution, the bottom exploration transmission and reception system includes the following two conditions.

First, it includes a hollow carbon fiber submersible electric field sensor.

Second, the sequential dual-transmission routine is implemented by three-phase bridge power circuit.

In order to implement a sequential dual transmission routine, the bottom exploration transmission / reception system 1000 according to the present invention includes three current electrodes 401, 402, and 403 in a streamer cable C, and a three-phase H-bridge power supply. Connected to the circuit.

That is, the transmitter 400 is connected to the three-phase H-bridge circuit by the streamer cable (C).

Further, in the sea floor exploration transmission and reception system 1000 according to the present invention, the current electrodes 401, 402, 403 and the potential electrodes 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511 ) Is preferably graphite (Graphite).

Particularly in seawater, graphite, which is one of insoluble materials, is preferably used as a current electrode and a potential electrode in consideration of corrosion in seawater and durability of the seabed towing vessel 1.

On the other hand, in the sea floor exploration transmission and reception system 1000 according to the present invention, the three-phase H-bridge circuit is composed of six Sic MOSFETs.

That is, to implement a sequential dual transfer routine, the streamer cable C has three current electrodes 401, 402, 403 with 5 m spacing between the electrodes and is connected to a three-phase H-bridge power supply circuit.

In this case, the three-phase H-bridge circuit is composed of six high-power SiC MOSFETs, thereby enabling high efficiency and high speed switching.

The transmission current is sequentially transmitted through the current electrodes 401, 402, 403 at 5 m and 10 m intervals.

Through the combination of the transmitter 400 and the receiver 500, more information can be obtained and the spatial resolution is improved as compared with the conventional sea bottom exploration transmission / reception system 100.

3 is a flow chart illustrating an operation flow of a sea bottom exploration transmission and reception method according to the present invention.

Referring to Figure 3, the bottom exploration transmission and reception method according to the present invention includes a total of six steps.

According to the present invention, a bottom exploration transmission / reception method is implemented by connecting first to third current electrodes 401, 402, and 403 to a three-phase H-bridge circuit by a streamer cable C.

In the first step S100, the A signal is transmitted from the first current electrode 401 and the second current electrode 402.

In the second step S200, the transmitted A signal is received by the receiver 500 including the plurality of potential electrodes 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, and 511. .

In the third step S300, the B signal is transmitted from the first current electrode 401 and the third current electrode 403.

In the fourth step S400, the transmitted B signal is received by the receiver 500 including the plurality of potential electrodes 501, 502, 503, 504, 505, 506, 507, 508, 509, 510, and 511. .

In a fifth step S500, the data received by the receiver 500 is stored in the data storage unit.

In a sixth step S600, the control unit processes data stored in the data storage unit.

Here, the data storage unit storing the received data may be DB or big data depending on the amount of data.

On the other hand, the control unit processes the data stored in the data storage unit in the form of the use of the received data to be confirmed by the user.

4 is a view showing the configuration of a three-phase H-bridge circuit of the bottom exploration transmission and reception system according to the present invention, Figure 5 is a one-cycle simulation pattern of the three-phase H-bridge circuit of the bottom exploration transmission and reception system according to Figure 4 A graph representing.

4 and 5, in the sea floor exploration transmission and reception method according to the present invention, A transmission and B transmission are sequentially performed.

That is, as shown in FIG. 4, the three-phase H-bridge circuit transmits the A transmission and the B transmission with a time term of approximately 0.2 seconds to 0.4 seconds, and the three phase H- of the sea bottom exploration transmission / reception system. One cycle simulation pattern of the bridge circuit is shown in FIG. 5.

Preferably, the three phase H-bridge circuit transmits the A transmission and the B transmission with a time term between approximately 0.2 seconds and 0.4 seconds.

The three-phase H-bridge circuit has the characteristics that full-wave rectification is possible with three half bridges, unlike the single-phase rectifiers are divided into half-bridge half-wave rectifiers and full-wave rectifiers using full bridges. .

Each phase of a three phase voltage source has a 120 degree phase difference.

These three-phase input voltages are converted into direct current with 360 kW ripple through the rectifier.

The advantage of the three-phase rectifier is that the single-phase full-wave rectifier produces 120µs ripple, but the three-phase is 360µs, the single phase is 0 ~ input peak voltage in the magnitude of the ripple, but the three phase rectified voltage ripple is 0.87 * input peak voltage ~ Input peak voltage.

Therefore, the size of the filter capacitor is significantly smaller.

In addition, when the input current is also a single phase, the harmonics of the input current is supplied three times in the three phases, compared to the input of a severe harmonic current twice in one cycle, thereby reducing the harmonics of the input current compared to the same capacity.

In this way, the exploration of the shallow seabed and the deep seabed is carried out almost simultaneously in one exploration.

As mentioned above, various exemplary embodiments of the present invention have been described with reference to some examples, but the descriptions of various exemplary embodiments described in the detailed description of the present invention are merely exemplary, and the present invention is only illustrative. Those skilled in the art will understand from the above description that the present invention can be variously modified or implemented in accordance with the present invention.

In addition, the present invention is not limited by the above description because it can be implemented in a variety of other forms, the above description is intended to complete the disclosure of the present invention is usually in the technical field to which the present invention belongs It should be understood that the present invention is provided only to fully convey the scope of the present invention to those skilled in the art, and the present invention is defined only by the claims of the claims.

1: ship
2: seawater
3: undersea
400: transmitter
401, 402, 403: current electrode
500: receiver
501, 502, 503, 504, 505, 506, 507, 508, 509, 510, 511: potential electrode
1000: exploration transmission and reception system

Claims (8)

A streamer cable comprising first to third current electrodes and a plurality of potential electrodes; And
A ship for towing the streamer cable;
The first to third current electrodes are a transmission unit,
The plurality of potential electrodes are receivers,
The transmitter is connected to a three-phase H-bridge circuit by the streamer cable,
Transmit the A signal at the first and second current electrodes,
Transmit a B signal at the first and third current electrodes,
Has a fine time term between the A signal and the B signal,
The distance between the current electrodes transmitting the A signal is shorter than the distance between the current electrodes transmitting the B signal,
The depth of the seabed exploration by the A signal is shallower than the depth of the seabed exploration by the B signal,
Seabed exploration transmission and reception system.
delete delete The method of claim 1,
The material of the current electrode and the potential electrode is characterized in that the graphite (Graphite),
Seabed exploration transmission and reception system.
The method of claim 1,
The three-phase H-bridge circuit is characterized by consisting of six Sic MOSFETs,
Seabed exploration transmission and reception system.
In the bottom exploration transmission and reception method wherein the first to third current electrodes are connected to the three-phase H-bridge circuit by a streamer cable,
A first step (S100) of transmitting an A signal from the first current electrode and the second current electrode;
A second step (S200) of receiving the transmitted A signal at a receiving unit including a plurality of potential electrodes;
A third step (S300) of transmitting a B signal from the first current electrode and the third current electrode;
A fourth step (S400) of receiving the transmitted B signal at the receiver;
A fifth step (S500) of storing data received by the receiving unit;
A sixth step (S600) of processing the stored data;
Has a fine time term between the A signal and the B signal,
The distance between the current electrodes transmitting the A signal is shorter than the distance between the current electrodes transmitting the B signal,
The depth of the seabed exploration by the A signal is shallower than the depth of the seabed exploration by the B signal,
Sea bottom exploration transmission and reception method.
The method of claim 6,
The A transmission and the B transmission is characterized in that the sequential,
How to send and receive sea bottom exploration.
delete

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