KR102547409B1 - Non-contact communication system between inside and outside of closed space - Google Patents

Abstract

The present invention relates to a non-contact communication system between inside and outside of an enclosed space.
A communication system according to the present invention includes at least one collection device installed inside a closed space and collecting set information about the inside of the closed space; a first communication modem that receives the information collected by the collection device and generates and outputs a frequency signal corresponding to the received information; a first coupler that is attached to an inner wall of the enclosed space and transmits and receives the frequency signal output from the first communication modem; a second coupler attached to an outer wall outside the closed space and collecting the frequency signal through magnetic coupling with the first coupler; a second communication modem receiving a frequency signal from the second coupler; and a management server receiving the frequency signal from the second communication modem and extracting the information from the received frequency signal.

Description

Non-contact communication system between inside and outside of closed space}

The present invention relates to a communication system in a confined space, and more particularly, to a non-contact communication system between inside and outside of a confined space to perform non-contact communication between the inside and outside of the confined space.

In industrial sites, human casualties are continuously occurring due to disasters. In particular, safety accidents due to suffocation continue to occur in work in an enclosed space.

When harmful gases are generated due to work in an enclosed space, an exhaust device is conventionally installed to discharge harmful gases from the inside while working, but the effectiveness is very low.

With the development of IT technology, various sensors capable of measuring temperature, humidity, harmful gases, etc. are installed inside the closed space and the measured values are transmitted to external devices. The manager checks the sensed values and copes with the improvement of the working environment and safety management.

However, it is not easy for the internal sensor to transmit to the external server according to the characteristics of the closed space. In the case of wired communication, there is a hassle of installing a communication line between an internal sensor and an external device, and when the length is long, a lot of communication lines are required. Also, in the case of wireless, communication between inside and outside of the confined space may be unstable.

For example, in the case of a large ship manufactured in a shipyard, wireless communication between the inside and outside of the closed space is difficult when many compartments become closed spaces and work is performed inside.

Republic of Korea Patent Registration No. 10-2253851 (Prior Document 1) can display the operator's location and alarm information through communication between a wearable device of a confined space worker and an external server. In addition, Korean Patent Publication No. 10-2020-0009739 (Prior Document 2) also identifies internal information through communication between the inside and outside of a confined space.

In the prior art, including these Prior Documents 1 and 2, it is only stated that communication is performed between the inside and outside of the enclosed space, and when communication between the inside and the outside is difficult due to the nature of the closed space, a solution for communication is not presented. there is.

Republic of Korea Patent No. 10-2253851 Republic of Korea Patent Publication No. 10-2020-0009739

An object of the present invention is to provide a non-contact communication system between the inside and outside of a closed space that enables non-contact communication between the inside and outside of the closed space.

An object of the present invention is to provide a communication system between the inside and outside of a closed space that allows information inside the closed space to be checked from the outside through non-contact wireless communication.

A non-contact communication system between inside and outside of a closed space according to an embodiment of the present invention includes at least one collection device installed inside the closed space and collecting set information about the inside of the closed space; a first communication modem that receives the information collected by the collection device and generates and outputs a frequency signal corresponding to the received information; a first coupler that is attached to an inner wall of the enclosed space and transmits and receives the frequency signal output from the first communication modem; a second coupler attached to an outer wall outside the closed space and collecting the frequency signal through magnetic coupling with the first coupler; a second communication modem receiving a frequency signal from the second coupler; and a management server receiving the frequency signal from the second communication modem and extracting the information from the received frequency signal.

In one embodiment of the present invention, the first coupler and the second coupler may be installed on the inner wall and the outer wall, respectively, at the same height from the ground.

In another embodiment of the present invention, the first coupler and the second coupler are installed on the inner wall and the outer wall, respectively, at different heights from the ground, and the height difference may be installed within 30 cm.

In the present invention, the first and second couplers may include a cylindrical housing having a central portion through which a space is formed therein, a core inserted into the space inside the housing, and a coil wound around the core.

In this case, the core may be formed by stacking a plurality of sub-cores.

In the present invention, the first and second couplers may be respectively installed on the inner wall and the outer wall of the upper or lower surface of the housing.

In the present invention, the collecting device may measure at least one of temperature, humidity, gas, and heat inside the closed space.

1 is a block diagram of a non-contact communication system applied to an enclosed space according to an embodiment of the present invention.
2 is an exemplary view in which first and second couplers according to an embodiment of the present invention are respectively installed on inner and outer walls of an enclosed space.
Figure 3 is another exemplary view in which the first and second couplers according to another embodiment of the present invention are respectively installed on the inner wall and the outer wall of the closed space.
4 is a configuration diagram of first and second couplers according to an embodiment of the present invention.
5 is a configuration diagram of a core constituting first and second couplers according to an embodiment of the present invention.
6 is a conceptual diagram illustrating magnetic coupling between first and second couplers according to an embodiment of the present invention.
Figure 7 is a flow chart for explaining the operation of the communication system between the inside and outside of the closed space according to an embodiment of the present invention.
8 is a flowchart illustrating the operation of a communication system between inside and outside of a closed space according to another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted.

Also, terms such as first, second, A, B, (a), and (b) may be used to describe components of an embodiment of the present invention. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the corresponding component is not limited by the term. When an element is described as being “connected,” “coupled to,” or “connected” to another element, that element may be directly connected or connected to the other element, but there may be another element between the elements. It should be understood that may be "connected", "coupled" or "connected".

1 is a block diagram of a non-contact communication system applied to an enclosed space according to an embodiment of the present invention.

Referring to FIG. 1, the non-contact communication system between the inside and outside of a closed space (hereinafter referred to as a communication system) according to the present invention enables wireless communication between the inside 11 and the outside 12 of a closed space 10 in a non-contact manner. can make it

The confined space 10 may be a space that is closed from the outside when a door or window is closed or is blocked with walls up and down, so that there is no or very little air flow. For example, it may be a space formed in the lower part of the ship.

In particular, wireless communication between the inside 11 and the outside 12 of the closed space 10 formed at the bottom of a large ship may be difficult. Therefore, for wired communication, a hole must be made in the wall of the closed space 10 to connect a communication cable, and after a predetermined operation is completed, the hole must be closed again, which is inconvenient.

Therefore, the communication system according to the present invention is a device of the inside 11 of the closed space 10 and the outside 12 in order to check various information in the inside 11 of the closed space 10 from the outside. Enables non-contact wireless communication between devices.

Although the drawings show the closed space 10 in a rectangular shape (hexahedron) as an example for convenience, the shape of the closed space 10 according to the embodiment of the present invention is not limited thereto.

When working in the inside 11 of the closed space 10, various sensors for measuring information on equipment and internal environment required for work may be disposed. The communication system of the present invention can allow wireless communication to be performed in a non-contact manner between these equipment and sensors disposed in the interior 11 and a device installed in the exterior 12 .

A communication system according to an embodiment of the present invention includes a plurality of collection devices 110, a first communication modem 120, a first coupler 130, a second coupler 140, a second communication modem 150, management It may be configured to include the server 160. Alternatively, in another embodiment, the communication system may further include an alarm output device 170.

The collection device 110 may collect various types of information from the inside 11 of the closed space 10 . At least one collection device 110 may be installed. For example, a temperature sensor capable of measuring the temperature in the interior 11 of the enclosed space 10, a humidity sensor capable of measuring humidity, a gas sensor capable of measuring gas, and a thermal sensor capable of detecting heat sensors and the like.

The first communication modem 120 may receive various types of information collected from the plurality of collection devices 110, generate a frequency signal corresponding to the received information, and transmit it to the first coupler 130.

The first coupler 130 may be installed inside 11 of the closed space 10 . Preferably it can be installed on the inner wall of the interior (11). The first coupler 130 may receive the frequency signal transferred from the first communication modem 120 and transmit it to the second coupler 140 in a non-contact manner.

The second coupler 140 may be installed outside 12 of the closed space 10 . Preferably, it may be installed on the outer wall of the outer 12 corresponding to the installation position of the inner wall where the first coupler 130 is installed. The second coupler 140 may receive the frequency signal transmitted from the first coupler 130 and transmit it to the second communication modem 150 .

The second communication modem 150 may transmit the transmitted frequency signal to the management server 160 .

The management server 160 may receive the transmitted frequency signal and extract information corresponding to the received frequency signal.

Through this, various information measured in the inside 11 of the closed space 10 can be checked in the management server 160 installed on the outside 12 of the closed space 10 .

On the other hand, when the management server 160 checks various information measured in the inside 11 of the closed space 10 and finds an abnormality, an alarm sound may be generated through the alarm output device 170.

That is, when the management server 160 transmits the alarm signal to the second communication modem 150, the second communication modem 150 may generate a frequency signal corresponding to the alarm signal and transmit it to the second coupler 140. The second coupler 140 may transmit a frequency signal to the first coupler 130 .

The first communication modem 120 may receive a frequency signal from the first coupler 130 and transmit it to the alarm output device 170 . The alarm output device 170 may generate an alarm by extracting an alarm signal from a frequency signal. Thus, the operator working in the inside 11 of the closed space 10 can check the alarm and take appropriate measures or evacuate.

The first coupler 130 and the second coupler 140 may perform non-contact communication. The first coupler 130 may transfer the frequency signal transmitted from the first communication modem 120 to the second coupler 140 in a non-contact manner, and conversely, the frequency signal transmitted from the second coupler 140 may be transferred to the first communication modem. It can also be passed to (120).

The first coupler 130 and the second coupler 140 may transfer specific frequency signals to each other through magnetic coupling. Each of the first coupler 130 and the second coupler 140 includes a core inside, and a coil is wound around the core.

Under specific conditions, magnetic coupling is made between the two coils of the first coupler 130 and the second coupler 140, and specific frequency signals can be transferred to each other. In this case, information and data to be transmitted may be included in a specific frequency.

As shown in the drawing, the first coupler 130 may be installed on the inner wall of the inside 11 of the closed space 10, and the second coupler 140 is on the outer wall of the outside 12 of the closed space 10. can be installed In this case, the first coupler 130 and the second coupler 140 may be attached to the inner wall and the outer wall at positions corresponding to each other, respectively.

2 and 3 are exemplary views of installation of a first coupler and a second coupler according to an embodiment of the present invention.

Referring to the example of FIG. 2 , the first coupler 130 and the second coupler 140 may be installed at the same height from the ground 13 . That is, the height h1 at which the first coupler 130 is installed from the ground 13 and the height h2 at which the second coupler 140 are installed from the ground 13 may be the same (h1=h2).

Referring to another example of FIG. 3 , the heights of the first coupler 130 and the second coupler 140 may be different. That is, h2=h1-d can be. In this case, d is a distance difference between the center of the first coupler 130 and the center of the second coupler 140 . In the present invention, d may be within 30 cm.

d may be determined by the magnetic force generated in the first coupler 130 and the second coupler 140 . Specifically, as the magnetic force increases, d may increase. The reason is that in order for the magnetic coupling between the first coupler 130 and the second coupler 140 to be performed smoothly, the first coupler 130 and the second coupler 140 must be within the range of the magnetic force. If the magnetic force is large, magnetic coupling can be performed smoothly even if d is large.

4 is a configuration diagram of first and second couplers according to an embodiment of the present invention, and FIG. 5 is a configuration diagram of cores constituting the first and second couplers according to an embodiment of the present invention.

Since the first coupler 130 and the second coupler 140 have the same configuration and shape, the first coupler 130 will be described below.

The first coupler 130 has a cylindrical shape as a whole and may be formed to pass through the central portion in the longitudinal direction. Looking at the configuration of the first coupler 130, a cylindrical housing 131 having a central portion penetrating in the longitudinal direction and having a space therein, a core 132 inserted into the inner space, and at least one part of the core 132 It may be configured to include a coil 133 wound more than once.

A space for accommodating the core 132 may be provided inside the housing 131 . To this end, the housing 131 may include an inner housing 131a and an outer housing 131b. A hollow portion penetrating in the longitudinal direction may be formed in the central portion of the inner housing 131a. The core 132 may be inserted between the inner housing 131a and the outer housing 131b.

The core 132 may have a shape corresponding to the inner space of the housing 131 . Accordingly, the core 132 may have a pipe shape with a hollow part formed at the center.

The core 132 may be made of, for example, a material having high-frequency characteristics with low insertion loss and low transmission loss so as to exhibit excellent electrical characteristics in consideration of permeability and resistivity characteristics.

In one embodiment, the core 132 may be formed in a single shape as shown in FIG. 4 or may be formed in a stacked form of several ring-shaped sub-cores 132a as shown in FIG. 5 . In this case, an insulator (not shown) may be inserted between each sub-core 132a. As a result, although permeability decreases due to dispersion of magnetic flux due to an insulator insertion effect between sub-cores 132a, frequency characteristics can be stabilized and high magnetic permeability can be exhibited due to the increase in specific resistance of sub-cores 132a.

In this embodiment, the core 132 may include a ferrite component. In the case of ferrite, the power loss is low and the resonant frequency is high. Also, in another embodiment, a ferrite material and another metal material may be fused together and used. In particular, since metal materials have the advantage of having high magnetic permeability and magnetic flux density, in the present invention, amorphous materials capable of combining the advantages of ferrite materials and metal materials may be used.

Amorphous materials have high permeability and magnetic flux density of metal materials, but power loss is very small compared to metal materials because they are amorphous. In addition, when crystals of several tens of nm are generated in an amorphous material, permeability can be maximized while minimizing power loss.

A coil 133 may be wound around the core 132 . In this embodiment, the coil 133 may preferably be wound 1 to 3 times, but the number of windings may be changed depending on the material of the core 132 and the characteristics of the frequency signal. Meanwhile, although not shown in the drawing, both ends of the coil 133 may be connected to the first communication modem 120, respectively.

When the first coupler 130 and the second coupler 130 configured as described above are installed in the inside 11 and the outside 12 of the closed space 10, respectively, the upper or lower surface of the cylindrical shape can be installed on the inner and outer walls. there is. That is, as shown in FIGS. 2 and 3, the upper or lower surfaces of the cylindrical shape are attached to the inner and outer walls, respectively.

6 is a conceptual diagram for explaining magnetic coupling between first and second couplers according to an embodiment of the present invention.

When the first coupler 130 and the second coupler 140 are installed at the same height from the ground (see FIG. 2) or installed with a certain height difference (see FIG. 3), the first coupler 130 and the second coupler 130 The magnetic forces generated in the two couplers 140 may mutually affect each other. That is, magnetic coupling may be achieved by the magnetic force generated between the first coupler 130 and the second coupler 140 .

As shown in FIG. 6 , when current flows through the coil 133 wound around the core 132 constituting the first coupler 130 , a first magnetic field 134 is generated around it. Similarly, when a current flows through the coil 143 wound around the core 142 constituting the first coupler 140, a second magnetic field 144 is generated around it.

At this time, when the distance between the first coupler 130 and the second coupler 140 is within a certain distance, magnetic coupling is performed by the first magnetic field 134 and the second magnetic field 144 . Magnetic coupling of a specific frequency signal is achieved between the first coupler 130 and the second coupler 140 by such magnetic coupling.

7 is a flowchart illustrating the operation of a communication system between inside and outside of a closed space according to an embodiment of the present invention.

Referring to FIG. 7 , at least one collection device 110 disposed in the inside 11 of the closed space 10 may collect various kinds of information corresponding to the internal environment (S101).

The first communication modem 120 may receive the collected information and generate a frequency signal corresponding to the information (S103). And the first communication modem 120 may transfer the frequency signal to the first coupler 130 installed on the inner wall of the inside 11 of the closed space 10 (S105).

The first coupler 130 may transmit a frequency signal to the second coupler 140 through magnetic coupling with the second coupler 140 installed on the outer wall of the outer 12 of the closed space 10 (S107), 2 coupler 140 may transmit a frequency signal to the second communication modem 150 (S109).

The second communication modem 150 transmits the frequency signal to the management server 160 (S111), and the management server 160 can extract the information from the received frequency signal (S113). As a result, the management server 160 installed on the outside 12 of the closed space 10 can check the environmental information of the inside 11 of the closed space 10 .

8 is a flowchart illustrating the operation of a communication system between inside and outside of a closed space according to another embodiment of the present invention.

Referring to FIG. 8, the management server 160 checks various information about the inside 11 of the closed space 10 and transmits an alarm signal to the second communication modem 150 when an error occurs in the inside 11. It can (S201).

The second communication modem 150 may generate a frequency signal corresponding to the alarm signal (S203) and transmit it to the second coupler 140 (S205).

The second coupler 140 may transmit a frequency signal to the first coupler 130 through magnetic coupling (S207), and the first coupler 130 may transmit a frequency signal to the first communication modem 120 (S207). S209).

When the first communication modem 120 transmits the frequency signal to the alarm output device 170 (S211), the alarm output device 170 extracts the alarm signal from the frequency signal (S213) and sounds an alarm according to the alarm signal. It may occur in the inside 11 of the closed space 10 (S215).

As a result, a worker working in the inside 11 of the closed space 10 can check the alarm sound, recognize that an abnormality has occurred, and take action or evacuate.

The present invention described above can detect and check information inside the closed space in a non-contact manner from the outside. As a result, it is possible to check and manage information inside the closed space with an easy and simple configuration, and it is possible to effectively check and manage the entire work status.

In the above, even though all the components constituting the embodiment of the present invention have been described as being combined or operated as one, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all of the components may be selectively combined with one or more to operate. In addition, terms such as "comprise", "comprise" or "having" described above mean that the corresponding component may be present unless otherwise stated, and thus exclude other components. It should be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and unless explicitly defined in the present invention, they are not interpreted in an ideal or excessively formal meaning.

The above description is merely an example of the technical idea of the present invention, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed according to the claims below, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: closed space 11: inside of closed space
12: outside of confined space 13: ground
110: collection device 120: first communication modem
130: first coupler 140: second coupler
150: second communication modem 160: management server
170: alarm output device

Claims (7)

At least one collection device installed inside the closed space and collecting set information about the inside of the closed space;
a first communication modem that receives the information collected by the collection device and generates and outputs a frequency signal corresponding to the received information;
a first coupler that is attached to an inner wall of the enclosed space and transmits and receives the frequency signal output from the first communication modem;
a second coupler attached to an outer wall outside the closed space and collecting the frequency signal through magnetic coupling with the first coupler;
a second communication modem receiving a frequency signal from the second coupler;
And a management server for receiving the frequency signal from the second communication modem and extracting the information from the received frequency signal,
The first coupler and the second coupler are each formed in a cylindrical shape, and the upper or lower surfaces of the cylindrical shape are attached to the inner and outer walls, respectively,
The first coupler and the second coupler are each formed in a cylindrical shape, and the upper or lower surfaces of the cylindrical shape are attached to the inner and outer walls, respectively,
The first coupler and the second coupler each include a core therein, and a coil is wound on the core,
In a state where the first coupler and the second coupler are respectively installed on the inner wall and the outer wall, current flows in the coil wound around the core constituting the first coupler to generate a first magnetic field around the second coupler. A current flows in the coil wound around the core to generate a second magnetic field around it, and when the distance between the first coupler and the second coupler is within a set distance, magnetic coupling is achieved by the first and second magnetic fields The magnetic coupling occurs between the first coupler and the second coupler to transmit and receive the frequency signal between the first coupler and the second coupler,
The first coupler and the second coupler are non-contact communication system between the inside and outside of the closed space, respectively, installed at a distance within the range of the first magnetic field and the second magnetic field. delete delete delete delete delete According to claim 1,
Wherein the collection device measures at least one of temperature, humidity, gas, and heat inside the closed space.

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