Information leakage prevention device and information leakage prevention system

Abstract

The present invention provides an information leakage suppression device and an information leakage suppression system that can suppress the leakage of information from a ship's control system. [Solution] An information leakage suppression device 2 for suppressing the leakage of information from a control device installed on a ship, comprising: a base body 3 in which the control device is placed inside; a holder 4, the holder comprising: a first hole plate 10 having a plurality of first through holes formed therein from the bottom surface to the top surface; and an explosive part 11 placed in a predetermined first through hole of the first hole plate; a lid 5, the lid not having a second through hole 5a in the portion of the first through hole 10a of the first hole plate corresponding to the first through hole in which the explosive part is placed, and having a second through hole 5a in the portion of the first through hole of the first hole plate 10 corresponding to at least a portion of the first through holes in which the explosive part is not placed; and an ignition device 6 for igniting the explosive in the explosive part 11.

Description

Technical Field

[0001] The present invention relates to an information leakage suppression apparatus and an information leakage suppression system.

Background Art

[0002] In recent years, various countermeasures have been proposed against information leakage of information in hard disk drives. While countermeasures have been taken against intrusions into hard disk drives via networks, countermeasures against information leakage due to physical theft of personal computers, such as a hard disk drive being physically stolen together with its personal computer, or being forcibly taken away even if the theft is noticed, have become an issue.

[0003] For example, Patent Document 1 proposes a personal computer theft countermeasure system that uses the positional relationship between a personal computer main body and a peripheral device to lock a hard disk drive equipped in the personal computer main body when the personal computer main body is stolen.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of Invention

Problems to be Solved by the Invention

[0005] However, once the personal computer main body is taken away, there is a risk that it will be analyzed over time and the internal information will leak out.

[0006] In addition, in cases where it is unavoidable to urgently stop information leakage in a personal computer, conventionally, means of physically destroying the hard disk with a hammer or an axe has been used. However, since hard disk drives are covered with aluminum die-cast metal and iron, they are relatively sturdy, and there are also problems such as the risk of failing to destroy the internal contents and the process taking time.

[0007] Furthermore, in recent years, there has been a challenge in preventing information leaks from ships. With the increasing sophistication of ship control systems, it is now common to install control devices on ships for this purpose. These ship control devices may store information such as departure points and ports of call, as well as other highly confidential information. Therefore, preventing the leakage of information from these ship control devices is also crucial.

[0008] This invention was made to solve these problems and aims to provide an information leakage suppression device and an information leakage suppression system that can suppress the leakage of information from a ship's control device. [Means for solving the problem]

[0009] To achieve the above objective, according to one embodiment of the present invention, an information leakage suppression device for suppressing the leakage of information from a control device installed on a ship comprises: a base body in which the control device whose information leakage is to be suppressed is arranged inside; a holder attached to the upper part of the base body and arranged above the control device, the holder comprising: a first hole plate having a plurality of first through holes formed therein that penetrate from the bottom surface to the top surface; and the explosive part arranged in a predetermined first through hole of the first hole plate; a lid portion arranged on the upper surface of the holder and formed in the shape of a flat plate, the lid portion having no second through holes in the portion of the first through holes of the first hole plate corresponding to the first through hole in which the explosive part is arranged, and having second through holes in the portion of the first through holes of the first hole plate corresponding to at least a portion of the first through holes in which the explosive part is not arranged; and an ignition device for igniting the explosive in the explosive part. According to the embodiment of the present invention configured as described above, the device is configured as an information leakage suppression device to suppress the leakage of information from a ship's control device. A holder positioned above the control device and the memory device, located inside the base body, forms a first hole plate, and the holder includes the explosive portion positioned in a predetermined first through-hole of the first hole plate. A lid positioned on the upper surface of the holder forms a second hole plate. The second hole plate does not form a second through-hole in the portion of the first through-hole of the first hole plate corresponding to the first through-hole where the explosive portion is positioned, but forms a second through-hole in the portion of the first through-hole of the first hole plate corresponding to at least a portion of the first through-hole where the explosive portion is not positioned. This allows the explosive portion to be positioned in a portion of the first through-hole of the first hole plate in accordance with the control device positioned inside the base body. Furthermore, since the explosive portion is positioned in a portion of the plurality of first through-holes, and the other plurality of first through-holes remain open, oxygen can be easily drawn in and exhaust gases can be easily discharged during explosive combustion, promoting combustion and suppressing the leakage of information from the ship's control device. Furthermore, since the first hole plate is formed by creating multiple first through holes and the second hole plate is formed in a predetermined shape, it becomes easier to flexibly adapt to the shape and arrangement of ship control devices, etc., and the incineration capacity of the control devices placed inside is strengthened, and the leakage of information from the internal control devices can be suppressed more effectively.

[0010] According to one embodiment of the present invention, preferably, an information leakage suppression system comprising the information leakage suppression device and a radio-controlled vessel. According to the embodiment of the present invention configured in this manner, an information leakage suppression system can be provided, comprising the information leakage suppression device and a radio-controlled ship. [Effects of the Invention]

[0011] According to the information leakage suppression device and information leakage suppression system of the present invention, it is possible to suppress the leakage of information from the ship's control device. [Brief explanation of the drawing]

[0012] [Figure 1] This figure shows an information leakage prevention system and information leakage prevention device according to one embodiment of the present invention. [Figure 2] This figure shows how the hull control unit, the control unit, and the external control unit are connected via the internet in an information leakage suppression system according to one embodiment of the present invention. [Figure 3] This is a schematic diagram showing the general configuration of a ship according to one embodiment of the present invention. [Figure 4] This is a perspective view showing an information leakage prevention device according to one embodiment of the present invention. [Figure 5] This is an exploded perspective view of an information leakage prevention device according to one embodiment of the present invention. [Figure 6] Figure 4 is a cross-sectional view showing the internal configuration of the information leakage suppression device along the line VI-VI. [Figure 7] Figure 4 is a cross-sectional view showing the internal configuration of the information leakage suppression device along the line VII-VII. [Figure 8] In an information leakage suppression device according to one embodiment of the present invention, Figure 6 is a schematic configuration diagram showing an enlarged view of the area near the hard disk and a schematic diagram illustrating the internal structure of the hard disk. [Figure 9] This is a top view showing the first hole plate of a holder in an information leakage suppression device according to one embodiment of the present invention. [Figure 10] This is a top view showing the lid of an information leakage prevention device according to one embodiment of the present invention. [Figure 11] This figure shows the state of the information leakage suppression device according to one embodiment of the present invention, before the through hole in the lid is opened. [Figure 12] This is a schematic diagram showing the general configuration of an information leakage suppression device according to one embodiment of the present invention. [Figure 13] This diagram shows a flowchart illustrating a method for configuring an information leakage suppression device according to one embodiment of the present invention. [Figure 14] This diagram shows a flowchart illustrating a method for disabling the hull control unit using an information leakage suppression device in an information leakage suppression system according to one embodiment of the present invention. [Figure 15] FIG. 3 is a diagram showing a state in which flame extends from the internal space of the base body to the outside of the lid part in the information leakage suppression apparatus according to one embodiment of the present invention. [Mode for Carrying Out the Invention]

[0013] Hereinafter, an information leakage suppression system 1 and an information leakage suppression apparatus 2 according to one embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present disclosure are described by way of example, and it will be apparent to those skilled in the art that many variations, modifications and substitutions can be made within the spirit and scope of the present invention. Accordingly, the present invention is not limited to the disclosed embodiments, and various variations, modifications and the like can be made in the form and details thereof without departing from the scope of the claims. In addition, the constituent elements disclosed in the specification can be freely combined.

[0014] As shown in FIG. 1, the information leakage suppression system 1 includes a ship 7 and an information leakage suppression apparatus 2.

[0015] The ship 7 is, for example, a mobile body capable of moving on water by autonomous navigation, semi-autonomous navigation, wireless control, or manned navigation. The ship 7 may be configured as a radio-controlled water drone that is operated unmanned. The ship 7 may be a ship operated by a person. There is provided an information leakage suppression system 1 including the information leakage suppression apparatus 2 and the radio-controlled ship 7. For example, when there is a risk that the radio-controlled ship 7 may be seized by a third party, the information leakage suppression apparatus 2 can be operated to rapidly damage and / or incinerate the hull control unit 15 inside the ship. In addition, in the radio-controlled ship 7, since priority can be given to suppressing information leakage of the control information of the ship 7 over the maintenance of the hull itself, the combustion performance of the explosive unit 11 can be set to be relatively strong. Thereby, the hull control unit 15 can be incinerated more reliably in a shorter time, and the information leakage of the control information of the ship 7 can be more strongly suppressed. The ship 7 includes a ship main body 20, a propulsion device 21, a steering device 22, a communication unit 23, a camera 24, a GPS device 25, and a hull control unit 15.

[0016] As shown in Figure 1, the vessel hull 20 forms a roughly boat-shaped form with a tapered front end when viewed from above. When viewed from the side, the top surface of the vessel hull 20 forms a shape parallel to the water surface. The vessel hull 20 is formed as a structure with buoyancy that allows it to float on water W. The vessel hull 20 can be moved maneuverably on water W by radio control. The size of the vessel hull 20 is arbitrary, for example, about the size of a small motorboat. The length of the vessel hull 20 in the longitudinal direction may be a value within the range of 1m to 24m. The vessel hull 20 is navigable on the sea or lakes.

[0017] The propulsion system 21 is configured to be a relatively high-output propulsion system that enables the ship hull 20 to travel at relatively high speeds. The propulsion system 21 rotates a screw by a drive unit to propel the ship hull 20 on the water at a predetermined speed. The propulsion system 21 is equipped with an electric motor. The propulsion system 21 is configured to enable high-speed travel, for example, up to 100 km / h. The propulsion system 21 may also be configured to enable high-speed travel within the range of 40 km / h to 60 km / h. The screw 21a of the propulsion system 21 is located at the lower rear of the ship hull 20. The rear of the ship hull 20 is formed above the screw 21a. The propulsion system 21 may have its screw 21a driven by an internal combustion engine, such as a gasoline engine.

[0018] The steering gear 22 is equipped with a rudder 22a, and the rudder 22a can be steered. For example, the rudder 22a of the steering gear 22 is positioned behind the propeller 21a of the propulsion system 21. The direction of the rudder 22a of the steering gear 22 is changed by the steering gear 22, thereby changing the direction of travel of the ship's hull 20. The steering gear 22 is electrically connected to and controllable by the hull control unit 15. The ship's hull 20 has the ability to move freely and maneuverably on the water using the propulsion system 21 and the steering gear 22.

[0019] The communication unit 23 can wirelessly transmit data from the ship 7 to the control unit 40 and the external control unit 30 located on an external server device. For example, the communication unit 23 can transmit information such as the ship 7's position (coordinates), speed, and direction to the external control unit 30. The communication unit 23 can also share position information and control information with the communication unit on the control unit side. The external control unit 30 and the control unit 40 enable control of the ship 7 via the communication unit 23. The ship 7 may also be equipped with an control unit, monitor, or other output devices as needed.

[0020] Camera 24 is installed on the ship's hull 20. Camera 24 is fixed to the ship's hull 20. While fixed to the ship's hull 20, camera 24 is positioned to photograph the outside of the ship's hull 20, i.e., the front, right, left, and rear of the ship. Camera 24 may consist of multiple cameras. Camera 24 can photograph and observe the surrounding situation from the ship's hull 20. Camera 24 is an RGB camera capable of capturing visible light images and videos. Camera 24 can be any other type of camera. For example, camera 24 may be an infrared camera capable of capturing infrared light images and videos, or a multispectral camera capable of separately acquiring multiple wavelengths. When an infrared camera or the like is installed, it becomes easier to understand the situation and take action at night. Camera 24 allows the situation around the ship 7 to be checked from a remote location, for example, by the operator of the control unit 40. For example, the operator of the control unit 40 can issue control instructions while viewing the image from camera 24. Camera 24 can be used to observe, measure, or monitor conditions at any location. Camera 24 can be used to check the movement of the ship's hull 20 or the navigation status of the ship 7. Camera 24 transmits acquired images, videos, and other data to the ship's control unit 15 wirelessly or via wired connection. Camera 24 is electrically connected to the ship's control unit 15.

[0021] The GPS device 25 functions as a position measuring device for determining the position of the ship's hull 20. The GPS device 25 is capable of determining the current position of the ship's hull 20 using satellites. The GPS device 25 is fixed to the ship's hull 20. The GPS device 25 is electrically connected to the ship's control unit 15.

[0022] As shown in Figure 3, the hull control unit 15 incorporates a processor 15a such as a CPU and a storage device 15b such as memory, and controls connected equipment based on a predetermined control program recorded in the memory, etc. The electrical connection between the hull control unit 15 and other equipment is, for example, a wired connection. The electrical connection between the hull control unit 15 and other equipment may be, in whole or in part, by wireless communication, or other methods. The hull control unit 15 may be electrically connected to, for example, the operation unit 40 or the external control unit 30 provided on an external server device via the communication unit 23 and a communication network such as the Internet. That is, a part of the hull control unit 15 may be located on the operation unit 40 or the external control unit 30 on any server device that are physically separated via the communication network, or it may be provided on these devices in the form of a program. For example, the hull control unit 15, the operation unit 40, and / or the external control unit 30 may function as an integrated control unit even if they are separated from each other. The hull control unit 15 stores predetermined programs for executing each function, but it is not necessary to store all programs; some or all of them may be stored via a communication network in the operation unit 40, external control unit 30, etc., or on the cloud. The hull control unit 15 can manage the operation of the entire information leakage suppression device 2, as well as the navigation control of the ship 7 itself. The hull control unit 15 can activate the ignition device based on its own judgment or command. The hull control unit 15 may also include an output display function unit that runs an application (application window) for displaying the processing results, control results, output results, etc. of each of these parts on a monitor. If the ship body 20 becomes unable to navigate and the ship body 20 becomes unable to communicate, for example, if it becomes impossible to reach the destination, the hull control unit 15 can activate the ignition device based on its own judgment without receiving a command.

[0023] The storage device 15b is composed of, for example, flash memory or an SSD (Solid State Drive). The storage device 15b may also be composed of, for example, RAM (Random Access Memory), ROM (Read Only Memory), HDD (Hard Disk Drive), USB memory, memory card, etc. The storage device 15b stores a predetermined program and a predetermined dataset. The predetermined program is an information leakage suppression program that suppresses the leakage of information stored in the hull control unit 15 located on the ship 7. The predetermined program causes the computer to function as each of the functional units described later. If the predetermined program determines, based on a predetermined judgment, that the computer cannot perform the intended navigation in a predetermined area, it activates the actuator 42 and starts ignition by the ignition device 6. The predetermined program may be configured as a program that causes each of the functional units of the hull control unit 15 to function. The predetermined program may be entirely or partially stored in the operation unit 40, the external control unit 30, or an external server device, and its output results may be displayed on a monitor attached to the external control unit 30, etc.

[0024] Furthermore, a predetermined program, such as an information leakage prevention program, may be recorded on a computer-readable recording medium. This computer-readable recording medium may be, for example, a storage device such as an HDD, RAM, ROM, or SSD, or other data-storage-capable recording medium such as a USB memory stick or SD card. Each program, while recorded on a computer-readable recording medium, can be executed by a computer and perform its predetermined function.

[0025] The hull control unit 15 may further include a companion computer 15c. The companion computer 15c forms a high-performance computing device that has the function of performing high-load calculations such as image recognition and path generation. The companion computer 15c may be formed by a computer such as a so-called Raspberry Pi. The companion computer 15c can read a predetermined program from the storage device 15b and can also function as one of the functional units of the hull control unit 15. The companion computer 15c may be provided independently of the hull control unit 15. The companion computer 15c is electrically connected to the hull control unit 15.

[0026] The information leakage suppression device 2 is configured to suppress the leakage of information from control equipment located on the ship 7. The information leakage suppression device 2 forms a ship-specific information leakage suppression device that suppresses the leakage of information from the ship's control equipment, such as the hull control unit 15. The information leakage suppression device 2 can form a box-shaped device that can house multiple control equipment inside, such as the processor 15a of the hull control unit 15, a storage device 15b such as an HDD, and a companion computer 15c such as a small computer. The information leakage suppression device 2 can form, for example, a box-shaped incinerator. The information leakage suppression device 2 is configured to house multiple devices and suppress the leakage of control information from multiple devices. The information leakage suppression device 2 suppresses the leakage of control information from multiple control equipment in a single action, for example, a single combustion. The information leakage suppression device 2 comprises a base body 3, a holder 4, a lid 5, an ignition device 6, and an actuator 42.

[0027] As shown in Figure 5, the base body 3 houses the processor 15a, storage device 15b, and companion computer 15c of the hull control unit 15, which is intended to suppress information leakage from the ship 7. The base body 3 is formed in a square or rectangular shape when viewed from above. The base body 3 forms a relatively large internal space 3c on the inside, capable of housing multiple processors 15a, storage devices 15b, and companion computers 15c of the hull control unit 15. The internal space 3c is large enough to accommodate, for example, three 3.5-inch hard disks placed side by side. The base body 3 is formed in a box shape. When viewed from above, the base body 3 is formed in a square shape, for example, forming a square with a length L (depth) in the front-to-back direction within the range of 15 cm to 50 cm, and a length W (width) in the left-to-right direction within the range of 15 cm to 50 cm. The base body 3 comprises a flat base portion 3a and an outer peripheral portion 3b formed to rise up. The base body 3 has an internal space 3c formed inside the outer peripheral portion 3b, which can accommodate the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15.

[0028] The recessed portion surrounded by the outer peripheral portion 3b is formed such that a small gap is created on the outside when the hull control unit 15 and the like are placed inside. The bottom surface of the recessed portion is a flat base portion 3a, which is formed in a rectangular shape. Thus, the holder 4 and the base body 3 are assembled with the holder 4 in contact with both the upper surface of the hull control unit 15 and the upper surface of the base body 3. This configuration makes it easier for holes to be formed in the upper surface of the hull control unit 15 by the explosive portion 11, and the information of the hull control unit 15 can be efficiently rendered unusable. A gap may be formed between the upper surface of the hull control unit 15 and the holder 4. Furthermore, since the lid 5 and the base body 3 are fastened together by screws extending from the lid 5 to the base body 3, and the hull control unit 15 and other components are positioned at the bottom of the holder 4, it is possible to construct the information leakage suppression device 2 even if the sizes of the various parts of the hull control unit 15 that are received inside the base body 3 differ slightly, and the device will have a certain effect as an information leakage suppression device.

[0029] The base body 3 is formed to any size to accommodate various installation spaces within the ship. The base body 3 is sized to allow multiple devices of different sizes and shapes to be simultaneously placed inside, such as the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15. The base body 3 is made of metal, such as stainless steel or other metal material.

[0030] The base unit 3 is positioned inside the ship 7, for example, in the control room or engine room of the ship 7, in the same location where the hull control unit 15 and memory device 15b are installed. The processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15 are housed in the information leakage suppression device 2, and communication lines and electrical lines (not shown) extend from the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15 through the internal space 3c to external equipment outside the information leakage suppression device 2. The base unit 3 is configured to be retrofitted so that the processor 15a, memory device 15b, and companion computer 15c of the existing hull control unit 15 can be placed inside the base unit 3 without significantly changing their configuration or position. In addition to the memory device 15b, the base unit 3 can also house other hull control units 15. The base unit 3 can house multiple devices side by side. The base unit 3 forms the internal space of a medium-sized incinerator, which is slightly larger than an HDD slot. The devices housed inside are not limited to the hull control unit 15; other arbitrary storage devices can also be accommodated.

[0031] The base body 3 maintains a state in which the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15 are housed inside, and has the function of burning the internal equipment together by passing the flame and heat from the combustion through the internal space 3c when the explosives described later are ignited. This makes it possible to efficiently disable the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15, which holds the control information of the ship 7, together.

[0032] The holder 4 is attached to the upper part of the base body 3 and is positioned above the hull control unit 15 and the memory device 15b. The holder 4 is positioned to cover the area above the hull control unit 15 and the memory device 15b, which are located inside the base body 3. In a top view, the holder 4 is formed in a rectangular shape corresponding to the shape of the opening on the upper surface of the base body 3. The holder 4 is formed from a flat plate. The holder 4 is formed from a metal member, such as a stainless steel metal member.

[0033] The holder 4 comprises a first-hole plate 10 having multiple first through-holes 10a formed therein from the bottom surface to the top surface, and an explosive portion 11 positioned in a predetermined first through-hole 10a of the first-hole plate 10. The explosive portion 11 is also formed to have a continuous cylindrical shape from the bottom surface to the top surface. The holder 4 is formed by integrally combining the first-hole plate 10 and the explosive portion 11.

[0034] The holder 4 is fastened to the upper part of the base body 3 at its lower surface by fastening members such as screws, and is connected to the lid 5, which will be described later, at its upper surface. The holder 4 is positioned so as to be sandwiched between the base body 3 and the lid 5, and when these three are combined as a single unit, they form a structure that houses the hull control unit 15 and the memory device 15b together, allowing them to be incinerated together inside.

[0035] The first perforated plate 10 is a flat plate formed in a rectangular shape when viewed from above. For example, the first perforated plate 10 is made of a perforated metal plate. The first perforated plate 10, being a perforated metal plate, increases the options for the position and arrangement of the explosives section 11. This allows the explosives section 11 to be positioned more flexibly according to the shape and arrangement of the hull control unit 15 and memory device 15b housed inside. Furthermore, since a large number of first through-holes 10a are formed by the perforated metal plate, the first through-holes 10a for the explosives section 11 and the first through-holes 10a for air passages can be prepared as shared holes. Therefore, when the explosives section 11 burns, the inflow of air and the exhaust of combustion gases can be performed well, and the combustion of the explosives section 11 can be promoted. When the combustion surface area is increased, efficient intake and exhaust of air in response to the increase in gases during combustion makes it easier to maintain powerful combustion. As a result, the internal hull control unit 15 and memory device 15b can be incinerated more efficiently, and the leakage of control information of the ship 7 can be suppressed more effectively. In addition, since the first perforated plate 10 is formed of a perforated plate, the options for the position of the explosive device 11 can be increased to match the configuration and position of the internal control device, such as the hull control unit 15. The first perforated plate 10 has multiple first through-holes 10a that penetrate from the bottom surface to the top surface. The first through-holes 10a extend linearly from the bottom surface to the top surface. The first perforated plate 10 is positioned at a distance from the hull control unit 15 which is located inside the base body 3. Even if the first perforated plate 10 is not in close contact with the hull control unit 15, the heat of the flame from the explosive device 11 can damage and / or render the hull control unit 15 etc. unusable. In addition, since the first perforated plate 10 can be positioned at a distance from the control device, the degree of freedom in the shape and arrangement of the control device, memory device etc. which are located inside the base body 3 can be increased, making it easier to accommodate equipment of relatively free form. For example, combustion by the explosive unit 11 can be applied to the hull control unit 15 of ships with various configurations, thereby more reliably suppressing the leakage of ship control information. The multiple first through holes 10a of the first hole plate 10 are positioned above multiple different devices among the hull control unit 15 and storage device 15b, for example, directly above each of the control devices.When the explosives section 11 burns directly above the hull control unit 15, the flames and heat tend to extend straight down, making it possible to create holes in the surface of the hull control unit 15 or for the flames to penetrate to the interior. The first through-holes 10a are formed at roughly equal intervals along the width and length directions. Each of the first through-holes 10a is formed in a cylindrical shape. The first through-holes 10a are formed to extend linearly from the bottom surface to the top surface of the first hole plate 10. As shown in Figure 9, among the plurality of first through-holes 10a, the explosives section 11, which will be described later, is placed in a predetermined first through-hole 10a, and the other first through-holes 10a can be left open or combined with the second through-holes 5a of the lid section 5, which will be described later, to form air supply and exhaust passages P.

[0036] The first hole plate 10 has, for example, a plurality of first through holes 10a arranged in a grid pattern or a predetermined arrangement pattern. The first hole plate 10 of the holder 4 may also be made of perforated metal. The first hole plate 10, being made of perforated metal, can increase the options for positions in which the explosives unit 11 can be placed. This allows the explosives unit 11 to be placed more flexibly according to the shape and arrangement of the hull control unit 15 and memory device 15b housed inside. Furthermore, since a large number of first through holes 10a are formed by the perforated metal, the first through holes 10a for the explosives unit 11 and the first through holes 10a for air passages can be prepared as shared holes. When the explosives unit 11 burns, the inflow of air and the discharge of combustion gases can be made more efficient, and the combustion of the explosives unit 11 can be promoted. As a result, the internal control devices and memory devices can be incinerated more efficiently, and the leakage of control information of the ship 7 can be suppressed more effectively. Furthermore, since the first perforated plate 10 is made of perforated metal, the options for the position of the explosives section 11 can be increased to match the placement of internal control devices, such as the hull control unit 15.

[0037] The explosive portion 11 is placed in a predetermined first through-hole 10a of the first hole plate 10. The explosive portion 11 is formed in a cylindrical shape, for example, a cylindrical pellet shape, and is formed to follow the inner circumferential surface of the first through-hole 10a and is housed within the first through-hole 10a. The explosive portion 11 is formed from cylindrical explosives. The diameter of the explosive portion 11 is, for example, a value in the range of 5 mm to 15 mm, for example, a diameter in the range of 5 mm to 10 mm. The explosive portion 11 is a combustible material that generates heat and flame to burn the object it is placed on. The explosive portion 11 can be formed from any explosive. The explosive portion 11 can be explosives, for example, a solid propellant. More specifically, the explosive portion 11 can be formed from, for example, a composite propellant. The composite propellant may be a solid propellant containing an oxidizer, a metal fuel, and a polymer binder. The composite propellant is formulated to include, for example, ammonium perchlorate, aluminum powder, HTPB (terminated hydroxyl polybutadiene), catalysts, plasticizers, and other additives. Because the composite propellant contains an oxidizer, once ignited, combustion can continue without the need for external air supply. For example, combustion continues even when submerged in water, achieving the objective. The explosive portion 11 is solid and fixed within the first through-hole 10a. The explosive portion 11 is selectively positioned in a portion of the multiple first through-holes 10a formed in the first hole plate 10. The position where the explosive portion 11 is positioned can be determined or changed to correspond to the location of equipment that should be preferentially destroyed among the processor 15a, memory device 15b, or companion computer 15c of the hull control unit 15 located directly below it. The explosive device 11 has the function of destroying information and rendering the internal equipment unusable by burning the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15 located directly below it with flames and heat upon ignition of the explosive device inside. The explosive device 11 is solid and is formed in a cylindrical shape with a diameter approximately the same as the first through-hole 10a. The vertical length of the explosive device 11 is also approximately the same as the vertical length of the first through-hole 10a. Therefore, the explosive device 11 can be installed relatively easily as an add-on within the first through-hole 10a. The explosive portion 11 is formed to penetrate from the bottom surface to the top surface inside the first through-hole 10a of the first hole plate 10. The explosive portion 11 can also be composed of general explosives, such as black powder, smokeless powder, or solid propellant. The explosive portion 11 can also be composed of, for example, a flammable rubber base material mixed with an oxidizing agent or metal particles. The explosive section 11, for example, its central axis X1 (the central axis X1 of the first through-hole 10a), is positioned to extend vertically within the information leakage suppression device 2. In a top view, the central axis X1 of the explosive section 11 is positioned above the memory device 15b. This ensures that the combustion of the explosive in the explosive section 11 causes flames to enter the memory device 15b at a position offset from the platter's spindle motor section 52, effectively rendering the platter's stored data unusable. The cylindrical section is formed to allow for additional explosive filling inside. The central axis X1 of the explosive unit 11 is positioned offset from the spindle motor unit 52 of the platter of the hard disk 50 when viewed from above. As a result, the combustion of the explosive in the explosive unit 11 causes the flame to enter the hard disk 50 at a position offset from the spindle motor unit 52 of the platter. This makes it easier for the flame and the main stream of high-temperature gas associated with the flame to spread concentrically around the lower front portion of the explosive unit 11 and the platter in the lower front portion, thereby efficiently rendering the stored data on the platter unusable.

[0038] As shown in Figure 3, the lid 5 is positioned on the upper surface of the holder 4 and is formed in a flat shape. When viewed from above, the lid 5 is formed in the same square or rectangular shape as the holder 4. The lid 5 is a flat plate made of stainless steel metal.

[0039] The lid portion 5 penetrates the four corners of the rectangle from the top surface to the bottom surface. The outer shape of the lid portion 5 can be the same as the outer shape of the first hole plate 10 and the base body 3, and is formed to the same outer size. The lid portion 5 is fastened to the holder 4 and the base body 3 from the top surface of the holder 4 by fastening members such as screws. The holder 4 is sandwiched between the lid portion 5 and the base body 3. The lid portion 5 is positioned to cover the top surface of the holder 4 and holds the explosive portion 11 in a semi-sealed state between the lid portion 5 and the base body 3, for example, with the bottom surface open. The lid portion 5 is provided so as to be in contact with the top surface of the first hole plate 10.

[0040] The lid portion 5 forms the second hole plate. The lid portion 5 is formed of a metal plate that forms the second through hole 5a. The lid portion 5 does not form the second through hole 5a in the portion of the first through hole 10a of the first hole plate 10 in which the explosive portion 11 is located, but instead forms a plate portion 5b (shown as a dashed line in Figure 10), and forms the second through hole 5a in the portion of the first through hole 10a of the first hole plate 10 in which the explosive portion 11 is not located, in a portion corresponding to at least a part of the first through hole 10a of the first hole plate 10 in which the explosive portion 11 is not located. The lid portion 5 forms the portion of the first through hole 10a corresponding to the explosive portion 11, for example, the upper part of the explosive portion 11, with the plate portion 5b. The second through hole 5a is formed at a position corresponding to the first through hole 10a in which the explosive portion 11 is not located. The lid portion 5 forms a second through-hole 5a above the first through-hole 10a where the explosive portion 11 is not located. In a top view, the lid portion 5 is a flat plate formed to be the same size and shape as the first hole plate 10. The lid portion 5 is made of a metal member, for example, stainless steel. Screw holes are formed near the four corners of the lid portion 5, and screws are inserted into each of them, passing through the holder 4 and fastening to the base body 3, thereby firmly securing the lid portion 5, holder 4, and base body 3 together.

[0041] Each of the second through-holes 5a is formed in a cylindrical shape. The second through-holes 5a are formed to penetrate the lid portion 5 in the vertical direction. The second through-holes 5a are formed in a position that overlaps in the vertical direction with at least a portion of the first through-holes 10a where the explosive portion 11 is not located. In the portion where the second through-holes 5a are formed, the high-temperature gas or flame generated when the explosive portion 11 is ignited is configured to escape from the internal space 3c of the base body 3 to the outside through the first through-holes 10a and the second through-holes 5a. On the other hand, the second through-holes 5a are not formed in the portion corresponding to the first through-hole 10a where the explosive portion 11 is located, and a plate portion 5b is formed therein. In this portion, the upward ejection of gas is suppressed by the lid portion 5, and the explosive energy and combustion energy of the explosive portion 11 are guided to the hull control unit 15, etc., which are the objects to be burned directly below. The lid portion 5 that forms the second hole plate can be formed, for example, as shown in Figure 11, initially as a metal plate without through holes during device formation, and the second through hole 5a is formed after the position of the explosive portion 11 is determined. This makes it easy to create a configuration in which the second through hole 5a is not formed in the portion corresponding to the first through hole 10a where the explosive portion 11 is located. For example, the second through hole 5a can be formed relatively easily in the metal plate with a drill or the like. Alternatively, the position of the explosive portion 11 may be determined in advance, a hole may be formed in the lid portion 5 beforehand, and the second through hole 5a may be formed. The second through hole 5a is not limited to being the same size as the first through hole 10a, and may be formed to be a different size or shape from the first through hole 10a. For example, the second through hole 5a is not limited to a circular hole, and may be formed by a linearly extending groove or the like.

[0042] As shown in Figure 6, the ignition device 6 ignites the gunpowder in the gunpowder section 11. The ignition device 6 includes, for example, a heating section 6a made of wound nichrome wire. Multiple ignition devices 6 are provided, corresponding to each of the gunpowder sections 11. The ignition devices 6 extend from the gunpowder section 11 to the outside of the holder 4. The ignition devices 6 are electrically connected to the heating section 6a and the power supply unit 41. The ignition devices 6 are electrically connected to the hull control unit 15 or the external control unit 30, and upon receiving an ignition command from the hull control unit 15 or the external control unit 30, they begin to supply power to the heating section 6a and ignite the gunpowder in the gunpowder section 11. The ignition devices 6 can simultaneously heat multiple gunpowder sections 11 upon receiving a command from the hull control unit 15 or the external control unit 30. The ignition device 6 is operated by a command from the actuator 42, and by energizing the heating section 6a, the nichrome wire is heated to a high temperature, for example, about 300 to 400 degrees Celsius, which ignites the gunpowder section 11. As a modification, the ignition device 6 may use an ignition bulb, and by energizing the ignition bulb, the ignition bulb is ignited, and the gunpowder section 11 is ignited by the ignition bulb.

[0043] The power supply unit 41 supplies power to the actuator 42 and the ignition device 6. The power supply unit 41 supplies power to the ignition device 6 and actuator 42 independently, for example, separately from the power supply unit of the ship 7. The power supply unit 41 can be made up of, for example, dry cell batteries or a battery. Therefore, even if the power supply unit of the ship 7 is not operating, the power supply unit 41 can operate the ignition device 6 using a separate power supply. The power supply unit 41 is electrically connected to the ignition device 6 and the external control unit 30, etc. The power supply unit 41 may also be electrically connected to the power supply unit of the ship 7 for charging functions, etc.

[0044] The actuator 42 has a function that can control the ignition of the ignition device 6, for example. When the ignition device 6 receives an operation command, it starts supplying power to the heating unit 6a for igniting the explosives in the explosives section 11. When the ignition device 6 determines that it has not received an operation command, it is controlled not to supply power to the heating unit 6a. The actuator 42 may be located at a distance from, for example, the holder 4. The actuator 42 may be located within the information leakage suppression device 2. In addition, all or part of the actuator 42 may be formed by the hull control unit 15. The actuator 42 may incorporate a CPU 42a and a storage device 42b such as memory, and may control connected equipment to execute predetermined controls based on predetermined control programs recorded in the memory, etc. For example, the actuator 42 stores a program that can execute an operation mode in which it starts supplying power to the heating unit 6a when it receives an operation command. The actuator 42 also stores a program that can execute a non-operation mode in which it does not start supplying power to the heating unit 6a when it has not received an operation command. The actuator 42 can be operated by receiving an operation command from the hull control unit 15 or the external control unit 30.

[0045] The actuator 42 can recognize, for example, that the ship 7 has been detected and is no longer able to navigate freely, based on changes in the ship's speed and acceleration. The actuator 42 can also recognize that the ship 7 has been detected and is no longer able to navigate freely by, for example, performing image recognition on images captured by a camera. For example, if the hull control unit 15 determines that the ship 7 is no longer able to navigate freely, the actuator 42 transmits a command to activate the ignition device 6 of the information leakage suppression device 2 in order to suppress information leakage. The actuator 42 may also be equipped with a wireless communication unit capable of wireless communication, and may determine the operation of the ignition device 6 by receiving a predetermined activation signal from an external source, and then transmit the activation signal to the ignition device 6. This allows an administrator to activate the ignition device 6 from a remote location to suppress information leakage. The hull control unit 15 may perform all or part of the functions of the external control unit 30. The hull control unit 15, etc., is equipped with a program capable of performing such control. For example, the external control unit 30 may be formed integrally with the hull control unit 15. The actuator 42 (hull control unit 15) may have the function of individually selecting the ignition device 6 to be ignited from among the multiple ignition devices 6 corresponding to each of the multiple explosive units 11 and transmitting an ignition command. This allows the actuator 42 (hull control unit 15) to selectively destroy and disable only the necessary equipment from among the processors 15a, memory devices 15b, and companion computers 15c of the multiple hull control units 15 housed inside, depending on the situation.

[0046] The base body 3 is made of a stainless steel metal component. The base body 3 forms an exhaust passage 3d that extends from the inner space 3c to the outside of the base body 3. The formation of the exhaust passage 3d prevents the expanded gas from being exhausted through the exhaust passage 3d when the gunpowder in the gunpowder section 11 burns explosively, thus preventing the base body 3, holder 4, and lid 5 from exploding and damaging surrounding objects. In this technology, exhaust passages are also formed by the first through-hole 10a of the first hole plate 10 and the second through-hole 5a of the lid 5, which promotes the combustion of the gunpowder in the gunpowder section 11. Furthermore, the exhaust passage 3d makes it easier to connect wiring from the hull control unit 15 to the outside.

[0047] As shown in Figure 8, the structure of the hard disk and the combustion by the flame of the explosive unit 11 will be described below as an example of a storage device 15b such as the memory of the hull control unit 15 which is located on the base body 3. The storage device 15b can be made up of, for example, a so-called 2.5-inch standard hard disk drive or a so-called 3.5-inch standard hard disk drive. Multiple hard disk drives may be arranged in a row to form the storage device 15b. The storage device 15b of the hard disk generally comprises a hard disk structure 51 whose lower part is formed of die-cast aluminum, a spindle motor unit 52, a platter 53, an actuator 54, a magnetic head 55, and a hard disk case 56 which are located on the hard disk structure 51.

[0048] The hard disk structure 51 is provided at the base of the storage device 15b. The spindle motor section 52, actuator 54, etc. are attached to the upper side of the hard disk structure 51. The hard disk structure 51 is formed in a rectangular shape when viewed from above. The hard disk structure 51 itself constitutes the lower part of the hard disk case 56 and is fixed to the hard disk case 56 around its outer circumference. The lower part of the hard disk structure 51 is made of a metal member, such as aluminum die-cast.

[0049] The spindle motor section 52 is formed to rise vertically from the hard disk structure 51. The spindle motor section 52 is cylindrical in shape. The spindle motor section 52 houses a spindle motor and is configured to rotate the platter 53 around the spindle motor section 52 in response to the rotation of the spindle motor. The inner circumference of the platter 53 is connected to the outer circumference of the spindle motor section 52. For example, four platters 53 are connected to the spindle motor section 52 in a vertically aligned configuration.

[0050] The platter 53 is formed on a disk. The platter 53 is formed on a thin flat plate. The platter 53 is formed in a circular shape of a predetermined diameter when viewed from above. The platter 53 has a storage area on its upper surface and is configured to store a large amount of data. The platter 53 has a layer of magnetic material for recording on its upper surface. The platter 53 is connected to the spindle motor unit 52 at its center. This is configured so that the platter 53 rotates in conjunction with the rotation of the spindle motor unit 52. The magnetic head 55 moves onto the platter 53 so that the magnetic head 55 can read the information stored on the platter 53. The platter 53 is formed by, for example, four platters 53, and the four platters 53 are arranged vertically. The storage layer and magnetic layer of the platter 53 constitute a delicate storage area and are susceptible to serious damage that renders them unusable even by slight heat or dirt such as soot.

[0051] The actuator 54 is located on the outside of one side of the platter 53. The actuator 54 is located on the hard disk structure 51. The actuator 54 is formed between the platter 53 and the wall portion. The actuator 54 is connected to the magnetic head 55 and is configured to move the magnetic head 55 in the scanning direction.

[0052] The magnetic head 55 is located inside the hard disk case 56. The magnetic head 55 has a fork-shaped data reading section. Initially, the magnetic head 55 is located outside the platter 53. When reading data, the magnetic head 55 is positioned on the platter 53 by the actuator 54. The magnetic head 55 has the function of writing data to the platter 53 and reading data from the platter 53.

[0053] The hard disk case 56 constitutes the outer case of the hard disk. The flat plate 56a on the top surface of the storage device 15b forms the top of the hard disk case 56. When the flame from the explosive unit 11 burns the flat plate 56a on the top surface of the storage device 15b, it creates an opening with heat, allowing the flame to enter the interior and destroy and incinerate the memory on the platter inside.

[0054] The control unit 40 (see Figure 1) may also send a command to the ship 7 to start the ignition device 6. The control unit 40 is also configured to issue commands for operations such as moving the ship. The control unit 40 is located away from the ship 7 and is electrically connected to the hull control unit 15, which will be described later, via wireless communication. Operational commands input to the control unit 40 are transmitted to the hull control unit 15, and the ship 7 is controlled by the hull control unit 15. The user can control the movement of the ship 7, the start of combustion, and the start of operation of the ignition device 6 by operating the control unit 40.

[0055] The operation unit 40 may include a monitor unit 61 that displays images from a camera, an input device 62 that receives operation inputs, and an operation unit-side control unit 43. The monitor unit 61 allows for confirmation of control information and input of control instructions. The monitor unit 61 has a screen that allows confirmation of images from the camera and the contents of the control unit. The input device 62 is composed of a device that inputs control commands, such as a mouse or keyboard. The input device 62 may display the operation input unit within the monitor unit 61 that displays images from the camera. The operation unit-side control unit 43 incorporates a CPU 43a and a memory 43b and other storage devices, and controls connected equipment to execute predetermined controls based on predetermined control programs recorded in the memory, etc. The operation unit-side control unit 43 is electrically connected to the communication unit 23, the hull control unit 15, the external control unit 30, etc. These electrical connections may be made by wireless communication, etc. As shown in Figure 2, the operation unit 40 is connected to the hull control unit 15 via the internet 9. The operation unit-side control unit 43 stores predetermined programs that enable the execution of each control in a storage device, etc. Thus, the operation unit 40 may be, for example, an information terminal device such as a smartphone or tablet. Another example is a dedicated controller such as a radio-controlled car controller. The operation unit 40 may be configured to allow all or part of the control of the hull control unit 15 to be performed manually. The operation unit 40 can also operate only some of the controls, such as the operation start control of the information leakage suppression device 2. For example, the hull control unit 15 may basically decide to start the operation of the information leakage suppression device 2, and the operation unit 40 may perform the operation at any time.

[0056] The ship 7 may be controlled by an external control unit 30 located outside the ship, such as on land. As shown in Figure 1, the external control unit 30 incorporates a processor 30a such as a CPU and a storage device 30b such as memory, and controls connected equipment based on a predetermined control program recorded in the memory, etc. The external control unit 30 may be electrically connected to, for example, the operation unit 40 or the hull control unit 15 via a communication unit 23 and a communication network such as the Internet. That is, parts of the operation unit 40 and the hull control unit 15 may be located on the external control unit 30, which is physically separated from them via a communication network, or they may be provided on these devices in the form of a program. For example, the external control unit 30, the operation unit 40, and / or the hull control unit 15 may function as a single control unit even if they are separated from each other. The external control unit 30 stores predetermined programs that execute each function, but it is not necessarily required to store all programs, and some or all of them may be stored on the operation unit 40 or on the cloud via a communication network. The external control unit 30 may be configured to manage not only the navigation control of the ship 7 itself, but also the operation of the entire information leakage suppression device 2.

[0057] The storage device 30b is composed of, for example, flash memory or an SSD (Solid State Drive). The storage device 30b may also be composed of, for example, RAM (Random Access Memory), ROM (Read Only Memory), HDD (Hard Disk Drive), USB memory, memory card, etc. The storage device 30b stores a predetermined program and a predetermined dataset. The predetermined program is an information leakage suppression program that suppresses information leakage from the hull control unit 15 located on the ship 7, and causes the computer to function as one of the functional units described later. The predetermined program causes the computer to start ignition using the actuator 42 and ignition device 6 if it determines, based on a predetermined judgment, that it is not possible to navigate as intended in a predetermined area. The predetermined program may also be configured as a program that causes each of the functional units of the external control unit 30 to function. The predetermined program may be stored in whole or in part in the operation unit 40, the external control unit 30, or an external server device, and its output results may be displayed on a monitor attached to the external control unit 30.

[0058] The operation unit 40 may include a monitor unit 31 that displays images from the camera, an input device 32 that receives operation inputs, and an operation unit-side control unit 43. The monitor unit 31 can check control information and input control instructions.

[0059] Next, as shown in Figure 13, the operation of the information leakage suppression system 1, which constitutes the information leakage suppression system 1 that suppresses the leakage of information from the control device located on the ship 7, will be described.

[0060] First, in S1, preparation step S1 is performed to prepare each piece of equipment. In preparation step S1, the ship 7 of the information leakage suppression system 1 and the information leakage suppression device 2 are prepared. Also, the base body 3, holder 4, the first hole plate 10 of the holder 4, the explosive part 11, and the lid part 5 of the information leakage suppression device 2 are prepared.

[0061] Next, in S2, the arrangement step S2 is performed in which the hull control unit 15, a processor 15a such as a CPU, a storage device 15b, a companion computer 15c, etc. are placed inside the base body 3. The processor 15a of the hull control unit 15, the storage device 15b, the companion computer 15c, and multiple control devices are placed side by side in the internal space 3c of the base body 3. As will be described later, the internal space 3c is heated and burned intensely, so even if the devices are not placed side by side, simply housing them inside will be effective. The storage device 15b of the hull control unit 15 is electrically connected to the processor 15a, the companion computer 15c, the actuator 42, and / or the external control unit 30, and is configured to be used in the same way as a hard disk, etc. The processor 15a of the hull control unit 15, the storage device 15b, and the companion computer 15c are each electrically connected to external equipment through an exhaust passage 3d that forms an opening via a wired connection. The first hole plate 10 of the holder 4 is formed and prepared with a number of first through holes 10a. The explosive part 11 is placed in the first hole plate 10 of the holder 4. The explosive part 11 is in a combustible state. The heating part 6a of the ignition device 6 is placed at the lower end of the explosive part 11. The ignition device 6 is also connected from the heating part 6a via a power line 6b. As shown in Figure 11, for example, the lid part 5 is prepared in a flat plate state, and the second through hole 5a is formed later. Holes are drilled in the first through holes 10a of the first hole plate 10 in the parts corresponding to the first through holes 10a in which the explosive part 11 is not placed. For example, holes are drilled in the metal plate of the lid part 5 using a drill or the like.

[0062] Next, in S3, the assembly step S3 is performed in which the base body 3, in which the equipment is arranged inside, the holder 4, in which the explosives section 11 is loaded, and the lid 5 are combined, and screws (not shown) are inserted into the screw holes (not shown) formed in the four corners, and the lid 5, holder 4, and base body 3 are fixed in a state of being firmly tightened. The information leakage suppression device 2 is installed in the ship's cabins, cockpit, etc. Therefore, the hull control unit 15, etc. are located inside the information leakage suppression device 2. The wires (not shown) extending from the actuator 42 are connected to the hull control unit 15, and the external control unit 30 and ignition device 6 are put into standby mode. Therefore, the information leakage suppression device 2 is in an operable standby state and becomes operable by commands from the hull control unit 15, actuator 42, operation unit 40, etc.

[0063] Next, with reference to Figure 14 and other figures, a series of operations of the information leakage suppression system 1, for example, the operation of disabling the hull control unit 15 by the information leakage suppression device 2, will be explained.

[0064] In S1, as shown in Figure 14, when the information leakage suppression device 2 receives an instruction to start combustion or determines that combustion has started, the hull control unit 15 activates the ignition device 6, and the ignition step S1 is executed, in which the ignition device 6 starts heating the gunpowder in the gunpowder section 11. The timing of when the ignition device 6 starts heating the gunpowder in the gunpowder section 11 is configured to be synchronized with the timing of when the ignition device 6 starts heating the gunpowder section 11 in another first through-hole 10a. Therefore, the gunpowder sections 11 located in multiple first through-holes 10a are heated by the ignition device 6 at almost the same time and start burning. When combustion of the gunpowder section 11 starts, flames are forcefully blown into the internal space 3c of the base body 3. This guides the main stream of flames and high-temperature combustion gases ejected downward from the gunpowder section 11 into the internal space 3c of the base body 3. When S1 ends, the process proceeds to S2.

[0065] In S2, when the lower part of the explosive section 11 begins to burn, the combustion step S2 is executed, and the explosive combustion of the explosive heats the iron plates of the outer casings on the upper surfaces of the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15 to a high temperature of, for example, about 2000 degrees Celsius, forming openings. For example, the openings formed in the processor 15a, memory device 15b, companion computer 15c, etc. of the hull control unit 15 are circular openings and are the same size as the first through-hole 10a. When multiple explosive sections 11 burn, the combustion surface area is increased, and the firepower is further strengthened. Flames from the multiple explosive sections 11 extend downward into the internal space 3c of the base body 3 and circulate within the internal space 3c of the base body 3. As will be described later, the design ensures sufficient exhaust of gas and supply of air, so combustion occurs powerfully within the internal space 3c of the base body 3, similar to that inside an incinerator. For example, when gas flow from the combustion of explosives is blown from the opening into the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15, the gas in the internal space 3c of the base body 3 can flow out through the exhaust passage 3d or the exhaust passage P on the through-hole side. The first hole plate 10 of the holder and the lid 5 form an exhaust passage P that discharges gas from the space inside the holder 4. Since the first hole plate 10 and the second plate of the lid are combined to form the exhaust passage P, the explosive section 11 can exert a powerful combustion and incineration effect on the control device 15 while relatively freely accommodating the shape and arrangement of the control device 15 located inside the base body. For example, combustion by the explosive section 11 can be applied to the control device 15 of ships with various configurations, and the leakage of ship control information can be suppressed more reliably. On the other hand, the explosive section 11 continues to burn even after forming through-holes to the processor 15a, memory device 15b, and companion computer 15c.

[0066] A first through-hole 10a and a second through-hole 5a are formed in the upper part of the internal space 3c of the base body 3. Therefore, air and exhaust from the internal space 3c of the base body 3 can be exhausted through the first through-hole 10a and the second through-hole 5a. The flame generated from the explosives section 11 can pass through the inside of the internal space 3c and extend to the outside through the first through-hole 10a and the second through-hole 5a. In addition, a large number of first through-holes 10a and second through-holes 5a are arranged, and it is also possible to supply air from the outside to the inside through the first through-holes 10a and the second through-hole 5a. Therefore, strong combustion is more easily sustained, and the processor 15a, memory device 15b, and companion computer 15c of the hull control unit 15 are incinerated more powerfully. As shown in Figure 15, the flame F generated from the explosives section can pass through the inside of the internal space 3c of the base body 3 and extend to the outside through the exhaust passages P of the first through-hole 10a and the second through-hole 5a. The flame F from the explosives unit 11 extends from the inner space to the outside and burns intensely. The hull control unit 15 and memory device 15b are incinerated even more intensely. The position of the first through-hole 10a in the first hole plate 10 and the position of the explosive portion 11 can be changed to any position, and the number of explosive portions 11 can also be changed. Increasing the number of explosive portions 11 increases the combustion surface area, resulting in a stronger incineration capacity. The first hole plate 10 of the holder 4 has a function that allows for increasing or decreasing the combustion surface area of ​​the explosives by increasing or decreasing the number of first through-holes 10a in which the explosive portions are arranged, thereby adjusting the capacity to incinerate the control device 15 inside. As a result, the combustion surface area of ​​the explosives can be increased relatively easily simply by increasing the number of first through-holes in which the explosive portions are arranged, making the combustion of the explosives stronger and improving combustion efficiency. Furthermore, by adjusting the number of first through-holes in which the explosive portions are arranged, the incineration capacity can be easily adjusted according to the size, material, and arrangement of the control device and memory device. As a result, the control device and memory device arranged in the base body can be damaged and / or incinerated more efficiently, and the leakage of ship control information can be more reliably suppressed. Of the multiple first through-holes 10a in the first hole plate 10 of the holder 4, the first through-hole 10a at a position corresponding to the internal control device 15 can be selected as the first through-hole for arranging the explosive part 11. This allows the explosive part 11 to be positioned above the control device 15, so that the flame and heat generated from the explosive part 11 can efficiently act on the control device 15. Furthermore, since the position for arranging the explosive part 11 can be easily selected according to the arrangement of the control device 15, efficient incineration can be performed even if the shape and arrangement of the control device 15 differ. As a result, the control device 15 arranged in the base body 3 can be more reliably damaged and / or incinerated, and the leakage of control information of the ship 7 can be more reliably suppressed. When the explosive part 11 is positioned directly above the target area such as the hull control unit 15, it is easier to form an opening for the hull control unit 15. On the other hand, the hull control unit 15 may be positioned between the explosive parts 11, and the components may be destroyed by heat from the side, for example, 2000 degrees. Alternatively, the hull control unit 15 or the like may be positioned in the middle of the flame extending from the explosive section 11 to the exhaust passage P of the first through-hole 10a or the second through-hole 5a.For example, the combustion of the explosive unit 11 can render the memory area of ​​the platter 53 of the memory device 15b unusable due to the flame and high-temperature combustion gas flow. In addition, other processors 15a, companion computers 15c, etc. can also be efficiently destroyed and rendered unusable by combustion over a wide area.

[0067] The combustion of the explosive unit 11 continues for a certain period of time, and the flame and the main stream of high-temperature combustion gases also continue to flow for a certain period of time. When the combustion of the explosive unit 11 ends, S2 ends, and the process proceeds to the end, and the information leakage suppression operation by the information leakage suppression device 2 ends.

[0068] An example of one embodiment of the present invention may be provided in the following embodiments.

[0069] (1) An information leakage suppression device for suppressing the leakage of information from a control device installed on a ship, comprising: a base body in which the control device whose information leakage is to be suppressed is placed inside; a holder attached to the upper part of the base body and positioned above the control device, the holder comprising: a first hole plate having a plurality of first through holes formed therein that penetrate from the bottom surface to the top surface; and the explosive part positioned in a predetermined first through hole of the first hole plate; a lid positioned on the upper surface of the holder and formed in the shape of a flat plate, the lid not having a second through hole in the portion of the first through hole of the first hole plate corresponding to the first through hole in which the explosive part is positioned, and having a second through hole in the portion of the first through hole of the first hole plate corresponding to at least a portion of the first through hole in which the explosive part is not positioned; and an ignition device for igniting the explosive in the explosive part.

[0070] (2) The information leakage suppression device according to (1), wherein the first hole plate of the holder is formed of a perforated metal plate.

[0071] (3) The information leakage suppression device according to (1), wherein the first hole plate of the holder is formed of perforated metal.

[0072] (4) The information leakage suppression device according to (1), wherein the first through hole of the first hole plate has a constant diameter from top to bottom and is formed in a straight line.

[0073] (5) The information leakage suppression device according to (1), wherein the first hole plate of the holder is positioned at a distance from the control device which is positioned inside the base body.

[0074] (6) The information leakage suppression device according to (1), wherein the lid portion is formed of a metal plate that forms the second through hole, the second through hole is formed at a position corresponding to the first through hole in which the explosive portion is not located, and the first hole plate of the holder and the lid portion form an exhaust passage for discharging gas from the space inside the holder.

[0075] (7) The information leakage suppression device according to (1), wherein the first hole plate of the holder has a function that allows the number of first through holes in which the explosive portion is arranged to increase or decrease the combustion surface area of ​​the explosive, thereby adjusting the ability to incinerate the control device inside.

[0076] (8) The information leakage suppression device according to (1), wherein, among the plurality of first through holes in the first hole plate of the holder, the first through hole at a position corresponding to the internal control device can be selected as the first through hole in which the explosive portion is arranged.

[0077] An information leakage suppression system comprising the information leakage suppression device described in any one of paragraphs (9)(1) to (8), and a radio-controlled vessel. [Explanation of symbols]

[0078] 1: Information leakage prevention system 2: Information leakage control device 3: Base body 3c: Space 3D: Exhaust passage 4: Holder 5: Lid 5a: 2nd through hole 6:Ignition device 7: Ship 10: First hole plate 10a: 1st through hole 11: Explosives Department 15: Control device

Claims

1. An information leakage suppression device that suppresses the leakage of information from control devices installed on a ship, A base body in which the control device, which is intended to suppress information leakage, is placed on the inside, A holder attached to the upper part of the base body and positioned above the control device, the holder comprising a first hole plate having a plurality of first through holes extending from the lower surface to the upper surface, and an explosive portion positioned in a predetermined first through hole of the first hole plate, A lid portion is disposed on the upper surface of the holder and is formed in a flat plate shape, wherein the lid portion does not have a second through hole in the portion of the first through hole of the first hole plate that corresponds to the first through hole in which the explosive portion is disposed, and the second through hole is formed in the portion of the first through hole of the first hole plate that corresponds to at least a portion of the first through hole in which the explosive portion is not disposed, An information leakage suppression device comprising an ignition device for igniting the gunpowder in the aforementioned gunpowder section.

2. The information leakage suppression device according to claim 1, wherein the first hole plate of the holder is formed of a perforated metal plate.

3. The information leakage suppression device according to claim 1, wherein the first hole plate of the holder is formed of perforated metal.

4. The information leakage suppression device according to claim 1, wherein the first through-hole of the first hole plate has a constant diameter from top to bottom and is formed in a straight line.

5. The information leakage suppression device according to claim 1, wherein the first hole plate of the holder is arranged at a distance from the control device which is located inside the base body.

6. The information leakage suppression device according to claim 1, wherein the lid portion is formed of a metal plate that forms the second through-hole, the second through-hole is formed at a position corresponding to the first through-hole in which the explosive portion is not located, and the first hole plate of the holder and the lid portion form an exhaust passage for discharging gas from the space inside the holder.

7. The information leakage suppression device according to claim 1, wherein the first hole plate of the holder has a function that allows for increasing or decreasing the combustion surface area of ​​the explosives by increasing or decreasing the number of first through holes in which the explosive portion is arranged, thereby adjusting the ability to incinerate the control device inside.

8. The information leakage suppression device according to claim 1, wherein, among a plurality of first through holes in the first hole plate of the holder, the first through hole at a position corresponding to the internal control device can be selected as the first through hole in which the explosive portion is arranged.

9. An information leakage suppression system comprising the information leakage suppression device according to any one of claims 1 to 8 and a radio-controlled vessel.

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