U.S. patent application number 15/168417 was filed with the patent office on 2017-06-01 for broadband surge suppression module having optical coupling channel.
The applicant listed for this patent is ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE. Invention is credited to Saehoon JU, Dong-Min KIM, Ki-Baek KIM, Sang-Kyu KIM, Sung-Hyun KIM, Uijung KIM, Hoon LEE, Kyung-Hoon LEE.
Application Number | 20170155242 15/168417 |
Document ID | / |
Family ID | 58670614 |
Filed Date | 2017-06-01 |
United States Patent
Application |
20170155242 |
Kind Code |
A1 |
KIM; Uijung ; et
al. |
June 1, 2017 |
BROADBAND SURGE SUPPRESSION MODULE HAVING OPTICAL COUPLING
CHANNEL
Abstract
A broadband surge suppression module having an optical coupling
channel includes a surge protection circuit unit for eliminating or
limiting a surge signal from an input digital signal, a
light-emitting circuit unit for receiving an output signal of the
surge protection circuit unit, converting the output signal into an
optical signal, and transmitting the optical signal, a
light-receiving circuit unit for receiving the optical signal from
the light-emitting circuit unit, a signal restoration circuit unit
for restoring a digital signal from an output signal of the
light-receiving circuit unit, and a module casing unit for allowing
the surge protection circuit unit, the light-emitting circuit unit,
the light-receiving circuit unit, and the signal restoration
circuit unit to be located therein, the module casing unit being
formed to penetrate through an electromagnetic shielding wall for
protecting a control system.
Inventors: |
KIM; Uijung; (Daejeon,
KR) ; LEE; Kyung-Hoon; (Daejeon, KR) ; KIM;
Sung-Hyun; (Daejeon, KR) ; LEE; Hoon;
(Hwaseong-si, KR) ; KIM; Ki-Baek; (Daejeon,
KR) ; KIM; Dong-Min; (Daejeon, KR) ; KIM;
Sang-Kyu; (Daejeon, KR) ; JU; Saehoon;
(Daejeon, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
Daejeon |
|
KR |
|
|
Family ID: |
58670614 |
Appl. No.: |
15/168417 |
Filed: |
May 31, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H04B 10/802
20130101 |
International
Class: |
H02H 9/00 20060101
H02H009/00; H05B 37/00 20060101 H05B037/00 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 1, 2015 |
KR |
10-2015-0170177 |
Claims
1. A broadband surge suppression module having an optical coupling
channel, comprising: a surge protection circuit unit for
eliminating or limiting a surge signal from an input digital
signal; a light-emitting circuit unit for receiving an output
signal of the surge protection circuit unit, converting, he output
signal into an optical signal, and transmitting the optical signal;
a light-receiving circuit unit for receiving the optical signal
from the light-emitting circuit unit; a signal restoration circuit
unit for restoring a digital signal from an output signal of the
light-receiving circuit unit; and a module casing unit for allowing
the surge protection circuit unit, the light-emitting circuit unit,
the light-receiving circuit unit, and the signal restoration
circuit unit to be located therein, the module casing unit being
formed to penetrate through an electromagnetic shielding wall for
protecting a control system.
2. The broadband surge suppression module of claim 1, wherein the
module casing unit comprises an inner conductive partition unit
formed between the light-emitting circuit unit and the
light-receiving circuit unit.
3. The broadband surge suppression module of claim 2, wherein the
optical signal transmitted from the light-emitting circuit unit is
transferred to the light-receiving circuit unit through an optical
cable that is located on a partition-penetrating waveguide formed
to penetrate through the inner conductive partition unit.
4. The broadband surge suppression module of claim 2, wherein the
optical signal transmitted from the light-emitting circuit unit is
transferred to the light-receiving circuit unit through a partition
hole formed through the inner conductive partition unit.
5. The broadband surge suppression module of claim 4, wherein the
light-emitting circuit unit is formed to be in close contact with a
first side of the inner conductive partition unit, and the
light-receiving circuit unit is formed to be in close contact with
a second side of the inner conductive partition unit.
6. The broadband surge suppression module of claim 2, wherein the
inner conductive partition unit is formed to be located on an
extension of the electromagnetic shielding wall, with the module
casing unit mounted to the electromagnetic shielding wall.
7. The broadband surge suppression module of claim 1, wherein the
module casing unit is formed to be detachably mounted to the
electromagnetic shielding wall.
8. The broadband surge suppression module of claim 1, wherein the
module casing unit is formed to be detachably mounted to a
penetrating waveguide formed to penetrate through the
electromagnetic shielding wall.
9. The broadband surge suppression module of claim 1, wherein the
signal restoration circuit unit is supplied with DC power from a DC
power source to restore a digital signal from the optical
signal.
10. The broadband surge suppression module of claim 1, wherein the
module casing unit is configured such that a mark is formed on a
surface of an input stage or an output stage.
11. The broadband surge suppression module of claim 1, wherein the
module casing unit is formed in a cylindrical shape.
12. A broadband surge suppression module having an optical coupling
channel, comprising: a module casing unit located to penetrate
through an electromagnetic shielding wall for protecting a control
system; a surge protection circuit unit located in the module
casing unit and configured to eliminate or limit a surge signal
from an input signal; an optical coupling channel unit located in
the module casing unit and configured to receive an output signal
of the surge protection circuit unit and transmit the output signal
from an input stage to an output stage of the module casing unit
through an optical coupling channel; and a signal restoration
circuit unit located in the module casing unit and configured to
restore a digital signal from an output signal of the optical
coupling channel unit.
13. The broadband surge suppression module of claim 12, wherein the
optical coupling channel unit comprises: a light-emitting circuit
unit for receiving the output signal of the surge protection
circuit unit, converting the output signal into an optical signal,
and transmitting the optical signal; and a light-receiving circuit
unit for receiving the optical signal from the light-emitting
circuit unit.
14. The broadband surge suppression module of claim 13, wherein the
module casing unit comprises an inner conductive partition unit
formed between the light-emitting circuit unit and the
light-receiving circuit unit.
15. The broadband surge suppression module of claim 14, wherein the
optical signal transmitted from the light-emitting circuit unit is
transferred to the light-receiving circuit unit through an optical
cable that is located on a partition-penetrating waveguide formed
to penetrate through the inner conductive partition unit.
16. The broadband surge suppression module of claim 14, wherein the
optical signal transmitted from the light-emitting circuit unit is
transferred to the light-receiving circuit unit through a partition
hole formed through the inner conductive partition unit.
17. The broadband surge suppression module of claim 13, wherein the
module casing unit is formed to be detachably mounted to the
electromagnetic shielding wall.
18. The broadband surge suppression module of claim 13, wherein the
module casing unit is configured such that a mark is formed on a
surface of the input stage or the output stage.
19. A broadband surge suppression module having an optical coupling
channel, comprising: a module housing configured to include
multiple broadband surge suppressors therein and formed in a
portion of an electromagnetic shielding wall for protecting a
control system, wherein each of the multiple broadband surge
suppressors comprises: a surge protection circuit unit for
eliminating or limiting a surge signal from an input digital
signal; a light-emitting circuit unit for receiving an output
signal of the surge protection circuit unit, converting the output
signal into an optical signal, and transmitting the optical signal;
a light-receiving circuit unit for receiving the optical signal
from the light-emitting circuit unit; a signal restoration circuit
unit for restoring a digital signal from an output signal of the
light-receiving circuit unit; and a module casing unit for allowing
the surge protection circuit unit, the light-emitting circuit unit,
the light-receiving circuit unit, and the signal restoration
circuit unit to be located therein, the module casing unit being
located to penetrate through a housing shielding wall in the module
housing, which is located on an extension of the electromagnetic
shielding wall.
20. The broadband surge suppression module of claim 19, wherein the
module casing unit comprises an inner conductive partition unit
formed between the light-emitting circuit unit and the
light-receiving circuit unit.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of Korean Patent
Application No. 10-2015-0170177, filed Dec. 1, 2015, which is
hereby incorporated by reference in its entirety into this
application.
BACKGROUND OF THE INVENTION
[0002] 1. Technical Field
[0003] The present invention generally relates to a broadband surge
suppression module having an optical coupling channel and, more
particularly, to a broadband surge suppression module having an
optical coupling channel, which can suppress high-power surges
flowing into a control system through a digital signal line of the
control system, which requires the connection of a conductive line,
using an optical coupling channel.
[0004] 2. Description of the Related Art
[0005] In control systems for electrical and industrial facilities,
the connection of a large number of lines to transfer various
control signals is required. For example, in the case of power
network control systems, the connection of power lines for system
operation, signal lines required to monitor the status of power
control equipment, such as a power circuit breaker or a
disconnecting switch, and control lines required to
transmit/receive control signals is required. Depending on the
function or type of equipment, a large number of signal
lines/control lines may be used. As all lines connected to a
control system, conductive transmission lines are used for the
delivery of power and signals. Such a line may function as a path
for transferring an external high-power surge to the inside of the
control system.
[0006] When the strength of a surge transferred into the control
system is higher than the withstand voltage of an internal
electronic circuit, the malfunctioning or physical breakdown of the
control system may occur, and thus surge suppression devices (or
surge protection devices) suitable for the characteristics of
respective lines must be added in order to protect the system
against a conductive surge.
[0007] Generally, a surge suppression device for conductive paths
is called a filter, and the basic function thereof is the function
of a frequency selector for removing unwanted frequency components
from a signal transferred through a line. A filter is a circuit
that combines an inductor and a capacitor, and is categorized as a
low-pass filter or a high-pass filter depending on which
frequencies pass through the filter. In a filter for suppressing
high-power surges, a filter circuit and a separate surge protection
device (SPD) may occasionally be installed together. The SPD
connected to the inside or input terminal of the filter circuit
induces a high-power surge signal to flow through a ground line
when the high-power surge signal is applied, thus preventing the
surge signal from being applied to the input terminal of the filter
circuit.
[0008] The rated specification of the inductor and the capacitor
constituting a filter circuit is determined by the strengths of
signals applied to the line. Since a part having a large volume and
a high rated value must be used to manufacture a filter capable of
accommodating a high rated value, the volume of the manufactured
filter increases. In particular, due to the use of an inductor, in
which an iron core is used, the volume of the filter inevitably
increases according to the rated specification, thus imposing a
limitation on manufacture at a small size. In particular, in a
high-power surge suppression filter, a separate high-power surge
protection device is installed together with a filter circuit, and
thus there is a disadvantage with regard to the implementation of a
filter having a small volume.
[0009] In order to protect the control system against high-power
electromagnetic interference, the system to be protected must be
installed in an electromagnetically shielded space, and
transmission lines to be connected to the corresponding system are
installed to penetrate through an electromagnetic shielding wall.
Generally, conductive lines connected to a system installed in an
electromagnetically shielded space are connected to the inside of
the electromagnetically shielded space through a suitable filter,
and a high-power surge suppression filter is installed such that it
is electrically connected to the electromagnetic shielding
wall.
[0010] For example, when the corresponding system is installed in
an electromagnetically shielded space to protect a power network
control system, multiple lines must be installed such that they
penetrate through the electromagnetic shielding wall. The power
network control system requires the connection of power lines,
signal lines, and control lines, and also requires the connection
of several tens or more of signal lines and control lines for
respective pieces of equipment. In this way, to install filters for
the connection of a large number of lines, a very large space is
required for the installation of the filters.
[0011] When multiple filters are installed on a shielding wall, the
electromagnetic shielding performance of the shielding wall may be
deteriorated due to the formation of multiple holes through the
shielding wall, and moreover, the prices of commercial filter
products are as high as several hundreds Dollars or more, thus
adding to the expense of the control system.
[0012] In relation to this, Korean Patent Application Publication
No. 2005-0029078 discloses technology entitled "Surge Cancel
Apparatus".
SUMMARY OF THE INVENTION
[0013] Accordingly, the present invention has been made keeping in
mind the above problems occurring in the prior art, and an object
of the present invention is to protect a control system requiring
the connection of a large number of conductive lines from
high-power electromagnetic interference. More specifically, the
present invention is intended to prevent high-power surges from
flowing into a control system through digital signal lines of the
control system, which requires the connection of conductive lines,
using an optical coupling channel.
[0014] Another object of the present invention is to implement a
surge suppression module having a small size. A further object of
the present invention is to reduce the space required to install
multiple filters and to enable a larger number of transmission
lines to be connected in the same space.
[0015] Additional object of the present invention is to very
effectively suppress broadband surge signals and manufacture the
surge suppression module so as to be detachably mounted to a
shielding wall, thus facilitating the maintenance of the present
invention.
[0016] In accordance with an aspect of the present invention to
accomplish the above objects, there is provided a broadband surge
suppression module having an optical coupling channel, including a
surge protection circuit unit for eliminating or limiting a surge
signal from an input digital signal; a light-emitting circuit unit
for receiving an output signal of the surge protection circuit
unit, converting the output signal into an optical signal, and
transmitting the optical signal; a light-receiving circuit unit for
receiving the optical signal from the light-emitting circuit unit;
a signal restoration circuit unit for restoring a digital signal
from an output signal of the light-receiving circuit unit; and a
module casing unit for allowing the surge protection circuit unit,
the light-emitting circuit unit, the light-receiving circuit unit,
and the signal restoration circuit unit to be located therein, the
module casing unit being formed to penetrate through an
electromagnetic shielding wall for protecting a control system.
[0017] The module casing unit may include an inner conductive
partition unit formed between the light-emitting circuit unit and
the light-receiving circuit unit.
[0018] The optical signal transmitted from the light-emitting
circuit unit may be transferred to the light-receiving circuit unit
through an optical cable that is located on a partition-penetrating
waveguide formed to penetrate through the inner conductive
partition unit.
[0019] The optical signal transmitted from the light-emitting
circuit unit may be transferred to the light-receiving circuit unit
through a partition hole formed through the inner conductive
partition unit.
[0020] The light-emitting circuit unit may be formed to be in close
contact with a first side of the inner conductive partition unit,
and the light-receiving circuit unit may be formed to be in close
contact with a second side of the inner conductive partition
unit.
[0021] The inner conductive partition unit may he formed to be
located on an extension of the electromagnetic shielding wall, with
the module casing unit mounted to the electromagnetic shielding
wall.
[0022] The module casing unit may be formed to be detachably
mounted to the electromagnetic shielding wall.
[0023] The module casing unit may be formed to be detachably
mounted to a penetrating waveguide formed to penetrate through the
electromagnetic shielding wall
[0024] The signal restoration circuit unit may be supplied with DC
power from a DC power source to restore a digital signal from the
optical signal.
[0025] The module casing unit may be configured such that a mark is
formed on a surface of an input stage or an output stage.
[0026] The module casing unit may be formed in a cylindrical
shape.
[0027] In accordance with another aspect of the present invention
to accomplish the above objects, there is provided a broadband
surge suppression module having an optical coupling channel,
including a module casing unit located to penetrate through an
electromagnetic shielding wall for protecting a control system; a
surge protection circuit unit located in the module casing unit and
configured to eliminate or limit a surge signal from an input
signal; an optical coupling channel unit located in the module
casing unit and configured to receive an output signal of the surge
protection circuit unit and transmit the output signal from an
input stage to an output stage of the module casing unit through an
optical coupling channel; and a signal restoration circuit unit
located in the module casing unit and configured to restore a
digital signal from an output signal of the optical coupling
channel unit.
[0028] The optical coupling channel unit may include a
light-emitting circuit unit for receiving the output signal of the
surge protection circuit unit, converting the output signal into an
optical signal, and transmitting the optical signal; and a
light-receiving circuit unit for receiving the optical signal from
the light-emitting circuit unit.
[0029] The module casing unit may include an inner conductive
partition unit formed between the light-emitting circuit unit and
the light-receiving circuit unit.
[0030] The optical signal transmitted from the light-emitting
circuit unit may be transferred to the light-receiving circuit unit
through an optical cable that is located on a partition-penetrating
waveguide formed to penetrate through the inner conductive
partition unit.
[0031] The optical signal transmitted from the light-emitting
circuit unit may be transferred to the light-receiving circuit unit
through a partition hole formed through the inner conductive
partition unit.
[0032] The module casing unit may be formed to be detachably
mounted to the electromagnetic shielding wall.
[0033] The module casing unit may be configured such that a mark is
formed on a surface of the input stage or the output stage.
[0034] In accordance with a further aspect of the present invention
to accomplish the above objects, there is provided a broadband
surge suppression module having an optical coupling channel,
including a module housing configured to include multiple broadband
surge suppressors therein and formed in a portion of an
electromagnetic shielding wall for protecting a control system,
wherein each of the multiple broadband surge suppressors comprises
a surge protection circuit unit for eliminating or limiting a surge
signal from an input digital signal; a light-emitting circuit unit
for receiving an output signal of the surge protection circuit
unit, converting the output signal into an optical signal, and
transmitting the optical signal; a light-receiving circuit unit for
receiving the optical signal from the light-emitting circuit unit;
a signal restoration circuit unit for restoring a digital signal
from an output signal of the light-receiving circuit unit; and a
module casing unit for allowing the surge protection circuit unit,
the light-emitting circuit unit, the light-receiving circuit unit,
and the signal restoration circuit unit to be located therein, the
module casing unit being located to penetrate through a housing
shielding wall in the module housing, which is located on an
extension of the electromagnetic shielding wall.
[0035] The module casing unit may include an inner conductive
partition unit formed between the light-emitting circuit unit and
the light-receiving circuit unit.
BRIEF DESCRIPTION OF THE DRAWINGS
[0036] The above and other objects, features and advantages of the
present invention will be more clearly understood from the
following detailed description taken in conjunction with the
accompanying drawings, in which:
[0037] FIG. 1 is a diagram showing the configuration of the
internal circuit of a broadband surge suppression module having an
optical coupling channel according to an embodiment of the present
invention;
[0038] FIG. 2 is an internal sectional view of a broadband surge
suppression module having an optical coupling channel according to
an embodiment of the present invention;
[0039] FIG. 3 is a perspective view of a broadband surge
suppression module having an optical coupling channel according to
an embodiment of the present invention;
[0040] FIG. 4 is an internal sectional view of a broadband surge
suppression module having an optical coupling channel according to
another embodiment of the present invention;
[0041] FIGS. 5 and 6 are diagrams showing the structure of an
electromagnetic shielding wall and a penetrating waveguide on which
the broadband surge suppression module having an optical coupling
channel according to the embodiment of the present invention is
installed;
[0042] FIGS. 7 to 9 are diagrams showing a method for mounting the
broadband surge suppression module having an optical coupling
channel according to the embodiment of the present invention to the
penetrating waveguide of FIGS. 5 and 6;
[0043] FIGS. 10 and 11 are diagrams showing a method for directly
mounting the broadband surge suppression module having an optical
coupling channel according to the embodiment of the present
invention to the electromagnetic shielding wall;
[0044] FIGS. 12 to 14 are diagrams showing the configuration of a
broadband surge suppression module having an optical coupling
channel, for input use, according to an embodiment of the present
invention;
[0045] FIGS. 15 to 17 are diagrams showing the configuration of a
broadband surge suppression module having an optical coupling
channel, for output use, according to an embodiment of the present
invention;
[0046] FIG. 18 is a diagram illustrating an example in which a
module housing including multiple broadband surge suppression
modules, each having an optical coupling channel, according to the
embodiment of the present invention is installed on an
electromagnetic shielding wall; and
[0047] FIGS. 19 and 20 are internal sectional views showing the
arrangement of the broadband surge suppression modules, each having
an optical coupling channel, according to the embodiment of the
present invention in the module housing.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0048] The present invention will be described in detail below with
reference to the accompanying drawings. Repeated descriptions and
descriptions of known functions and configurations which have been
deemed to make the gist of the present invention unnecessarily
obscure will be omitted below. The embodiments of the present
invention are intended to fully describe the present invention to a
person having ordinary knowledge in the art to which the present
invention pertains. Accordingly, the shapes, sizes, etc. of
components in the drawings may be exaggerated to make the
description clearer.
[0049] Hereinafter, the configuration and operation of a broadband
surge suppression module having an optical coupling channel
according to an embodiment of the present invention will be
described in detail with reference to the attached drawings.
[0050] FIG. 1 is a diagram showing the configuration of the
internal circuit of a broadband surge suppression module having an
optical coupling channel according to an embodiment of the present
invention. FIG. 2 is an internal sectional view of a broadband
surge suppression module having an optical coupling channel
according to an embodiment of the present invention. FIG. 3 is a
perspective view of a broadband surge suppression module having an
optical coupling channel according to an embodiment of the present
invention.
[0051] Referring to FIGS. 1 to 3, a broadband surge suppression
module 100 having an optical coupling channel according to an
embodiment of the present invention may be located in a portion of
the electromagnetic shielding wall of a control system, and is
configured to receive a digital signal through an input unit 100a
from the outside of the electromagnetic shielding wall, internally
transfer the digital signal through the optical coupling channel,
re-convert the digital signal, and transfer the resulting digital
signal to the control system inside the electromagnetic shielding
wall through an output unit 100b.
[0052] More specifically, the broadband surge suppression module
100 having an optical coupling channel according to the embodiment
of the present invention may be formed to include a module casing
unit 110, a surge protection circuit unit 120, a light-emitting
circuit unit 130, a light-receiving circuit unit 140, a signal
restoration circuit unit 150, and an inner conductive partition
unit 160.
[0053] The module casing unit 110 is a casing in which the surge
protection circuit unit 120, the light-emitting circuit unit 130,
the light-receiving circuit unit 140, the signal restoration
circuit unit 150, and the inner conductive partition unit 160,
which will be described later, are located. The module casing unit
110 may be formed to include a module cover 110a and a module
enclosure 110b. Further, the module casing unit 110 may be located
to penetrate through the electromagnetic shielding wall for
protecting the control system. Furthermore, the module casing unit
110 is formed to be detachably mounted to the electromagnetic
shielding wall. A detachable mounting scheme will be described in
detail later with reference to FIGS. 5 to 11. In addition, the
module casing unit 110 may be formed in a cylindrical shape.
[0054] The surge protection circuit unit 120 eliminates or limits a
surge signal from the digital signal input through an input signal
line 10.
[0055] The light-emitting circuit unit 130 receives the output
signal of the surge protection circuit unit 120, converts the
output signal into an optical signal, and transmits the optical
signal.
[0056] The light-receiving circuit unit 140 receives the optical
signal from the light-emitting circuit unit 130. The light-emitting
circuit unit 130 and the light-receiving circuit unit 140 form an
optical coupling channel, and are configured to receive the output
signal of the surge protection circuit unit 120 and transmit the
output signal from the internal input stage of the module casing
unit 110 to the output stage thereof. Here, the optical signal
transmitted from the light-emitting circuit unit 130 may be
transferred to the light-receiving circuit unit 140 through an
optical cable 135b disposed in a partition-penetrating waveguide
135a formed to penetrate through the inner conductive partition
unit 160, which will be described later.
[0057] The signal restoration circuit unit 150 restores the digital
signal from the output signal of the light-receiving circuit unit
140 and outputs the digital signal through the output signal line
20. Here, the output signal line 20 is connected to the control
system provided inside the electromagnetic shielding wall. Such a
signal restoration circuit unit 150 is supplied with Direct Current
(DC) power from a DC power source to restore the digital signal
from the optical signal. That is, a DC feed line may be
additionally connected to the signal restoration circuit unit
150.
[0058] The inner conductive partition unit 160 is formed between
the light-emitting circuit unit 130 and the light-receiving circuit
unit 140 in the module casing unit 110. Such an inner conductive
partition unit 160 may be formed to be located on an extension of
the electromagnetic shielding wall, with the module casing unit 110
mounted to the electromagnetic shielding wall.
[0059] Hereinafter, the configuration and operation of a broadband
surge suppression module having an optical coupling channel
according to another embodiment of the present invention will be
described with reference to the attached drawings.
[0060] FIG. 4 is an internal sectional view of a broadband surge
suppression module having an optical coupling channel according to
another embodiment of the present invention.
[0061] Referring to FIG. 4, a broadband surge suppression module
200 having an optical coupling channel according to another
embodiment of the present invention is configured such that the
configuration of only the optical coupling channel is different
from that of the broadband surge suppression module 100 shown in
FIGS. 1 to 3. Therefore, only the configuration of the optical
coupling channel is described, and the same reference numerals are
used to designate the same components as those of the broadband
surge suppression module 100 of FIGS. 1 to 3, and thus a detailed
description thereof will be omitted.
[0062] In the broadband surge suppression module 200 having an
optical coupling channel according to another embodiment of the
present invention, the optical coupling channel is formed to
include a partition hole 260a, which is formed through an inner
conductive partition unit 260. That is, an optical signal
transmitted from the light-emitting circuit unit 130 is transferred
to the light-receiving circuit unit 140 through the partition hole
260a in the inner conductive partition unit 260. Here, the
light-emitting circuit unit 130 may be formed to be in close
contact with a first side of the inner conductive partition unit
260, and the light-receiving circuit unit 140 may be formed to be
in close contact with a second side of the inner conductive
partition unit 260. By means of this structure, the broadband surge
suppression module 200 having an optical coupling channel according
to the other embodiment of the present invention may be implemented
to have a smaller size.
[0063] Below, a detachable mounting scheme for attaching/detaching
the broadband surge suppression module having an optical coupling
channel according to the embodiment of the present invention
to/from the electromagnetic shielding wall will be described.
[0064] FIGS. 5 and 6 are diagrams showing the structure of an
electromagnetic shielding wall and a penetrating waveguide on which
the broadband surge suppression module having an optical coupling
channel according to the embodiment of the present invention is
installed. FIGS. 7 to 9 are diagrams showing a method for mounting
the broadband surge suppression module having an optical coupling
channel according to the embodiment of the present invention to the
penetrating waveguide of FIGS. 5 and 6.
[0065] Referring to FIGS. 5 and 6, a penetrating waveguide 2,
formed to penetrate through an electromagnetic shielding wall 1 for
protecting a control system from outside the control system, may be
located in a portion of the electromagnetic shielding wall 1.
Further, as shown in FIGS. 7 to 9, a broadband surge suppression
module 100 having an optical coupling channel may be inserted into
and mounted to the penetrating waveguide 2 of the electromagnetic
shielding wall 1. Alternatively, the broadband surge suppression
module 100 may be detached from the penetrating waveguide 2.
[0066] FIGS. 10 and 11 are diagrams showing a method for directly
mounting the broadband surge suppression module having an optical
coupling channel according to the embodiment of the present
invention to the electromagnetic shielding wall,
[0067] Referring to FIGS. 10 and 11, an electromagnetic shielding
wall 3 has a hole formed in a portion thereof, wherein the hole
enables the mounting of the broadband surge suppression module 100
having an optical coupling channel, thus allowing the broadband
surge suppression module 100 to be directly mounted to the
electromagnetic shielding wall 3 through the hole.
[0068] Below, a method for categorizing the use purpose of the
broadband surge suppression module having an optical coupling
channel according to the embodiment of the present invention as
input or output use will be described.
[0069] FIGS. 12 to 14 are diagrams showing the configuration of a
broadband surge suppression module having an optical coupling
channel, for input use, according to an embodiment of the present
invention. FIGS. 15 to 17 are diagrams showing the configuration of
a broadband surge suppression module having an optical coupling
channel, for output use, according to an embodiment of the present
invention. Although only drawings for the configuration of modules
in which an optical cable is used as the optical coupling channel
have been presented in FIGS. 12 to 17, a broadband surge
suppression module in which no optical cable is used may also have
the same configuration as the above modules. Further, in FIGS. 12
to 17, the same reference numerals are assigned to the same
components as those of the broadband surge suppression module 100
having an optical coupling channel, which was shown in FIGS. 1 to
3, and a detailed description thereof will be omitted.
[0070] As shown in FIGS. 12 to 14 and FIGS. 15 to 17, the broadband
surge suppression module 100 having an optical coupling channel
according to the embodiment of the present invention may be
designed to be categorized into a module for input use (FIGS. 12 to
14) and a module for output use (FIGS. 15 to 17). Here, since it
may be difficult to categorize the use purpose of the broadband
surge suppression module 100 using only the external shape thereof,
an input use mark 100c may be additionally formed on an input stage
when the module is intended for input use, and an output use mark
100d may be additionally formed on an output stage when the module
is intended for output use. However, the position of this mark is
not limited to any specific position. Further, in the case of input
use, a DC feed line 21 and a digital signal line 22 may be formed
on the output stage, as shown in FIG. 14. In the case of output
use, a DC feed line 21 and a digital signal line 22 may be formed
on the input stage, as shown in FIG. 17.
[0071] Below, a configuration in which a module housing including
multiple broadband surge suppressors therein is installed on an
electromagnetic shielding wall will be described. Here, each of the
multiple surge suppressors may be any one of the broadband surge
suppression module having an optical coupling channel, shown in
FIGS. 1 to 17.
[0072] FIG. 18 is a diagram illustrating an example in which a
module housing including multiple broadband surge suppression
modules, each having an optical coupling channel, according to the
embodiment of the present invention is installed on an
electromagnetic shielding wall. FIGS. 19 and 20 are internal
sectional views showing the arrangement of the broadband surge
suppression modules, each having an optical coupling channel,
according to the embodiment of the present invention in the module
housing.
[0073] Since broadband surge suppression modules, each having an
optical coupling channel, are assembled in a shape that penetrates
through the electromagnetic shielding wall 1, it is required to
form a hole and install a penetrating waveguide in the
electromagnetic shielding wall 1, and the workload required for
this operation increases in proportion to the number of modules to
be installed. To solve this problem, referring to FIGS. 18 to 20,
when multiple surge suppression modules are required to be
installed, that is, when multiple digital lines must be connected
to the inside of the electromagnetic shielding wall 1, a scheme for
installing the surge suppression modules in a separate module
housing 1000 and assembling the module housing 1000 to the
electromagnetic shielding wall 1 may be used.
[0074] Referring to FIG. 18, an example is shown in which, to
install multiple surge suppression modules, the multiple surge
suppression modules are installed on the electromagnetic shielding
wall 1 using the separate module housing 1000. In detail, an
example in which a flange part 5 of the module housing 1000 and the
electromagnetic shielding wall 1 are mounted to each other through
a fastening part 4 such as bolts or welding parts is
illustrated.
[0075] FIGS. 19 and 20 are views showing an example in which
multiple surge suppression modules are installed in the module
housing 1000. In the module housing 1000, multiple penetrating
waveguides, which are mounted to the surge suppression modules, and
a housing shielding wall 6, which can be located on an extension of
the electromagnetic shielding wall 1, may be configured.
[0076] The module housing 1000 shown in FIGS. 18 to 20 may also
provide a space required to install power lines and filters for
other signal lines in addition to the surge suppression modules for
digital lines according to the present invention,
[0077] In accordance with the present invention, a control system
requiring the connection of a large number of conductive lines may
be protected from high-power electromagnetic interference. More
specifically, the present invention may prevent high-power surges
from flowing into a control system through a digital signal line of
the control system, which requires the connection of a conductive
line, using an optical coupling channel.
[0078] Further, the present invention may enable a surge
suppression module having a small size to be implemented because
signals are transferred using an optical coupling channel rather
than a filter circuit. By means of this, the present invention may
reduce the space required to install multiple filters and may
enable a larger number of transmission lines to be connected in the
same space.
[0079] Furthermore, the present invention may very effectively
suppress a broadband surge signal because signals are transferred
through an optical coupling channel, after which the original
signals are restored.
[0080] Furthermore, the present invention may be manufactured to be
detachably mounted to a shielding wall, thus facilitating the
maintenance of the present invention.
[0081] As described above, in the broadband surge suppression
module having an optical coupling channel according to the present
invention, the configurations and schemes in the above-described
embodiments are not limitedly applied, and some or all of the above
embodiments can be selectively combined and configured so that
various modifications are possible.
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