WO2015167052A1

WO2015167052A1 - Composite cable for power line communication

Info

Publication number: WO2015167052A1
Application number: PCT/KR2014/003929
Authority: WO
Inventors: 강중석; 정봉수; 손영철
Original assignee: 제이에스에이엠아이(주)
Priority date: 2014-05-02
Filing date: 2014-05-02
Publication date: 2015-11-05

Abstract

The present invention relates to a composite cable (100) for power line communication (PLC) and, more particularly, to a flat composite cable (100) for PLC, which can branch a PLC signal at an access point (P), at which the PLC signal is to be branched, without cutting a cable coat (140). A composite cable (100) for PLC according to an embodiment of the present invention comprises: an optical cable (110) extending in the lengthwise direction; a coated communication line (120) extending in the lengthwise direction to be spaced apart from one side or opposite sides of the optical cable (110) in the widthwise direction; and a coat (140) extending in the lengthwise direction while covering the optical cable (110) and the coated communication line (120) to fix a spaced location between the optical cable (110) and the coated communication line (120), wherein the coat (140) has a quadrangular lengthwise cross-section. Thus, the cable can easily branch a PLC signal using a signal extraction member (70) at any place where the access point (P) is located without cutting the cable even for the occurrence of a branch point, thereby reducing a construction time, costs, and an access failure rate.

Description

Composite cable for power line communication

The present invention relates to a composite cable for power line communication (PLC), and more particularly to a power line of a planar form that can branch the PLC signal at any connection point for branching the PLC signal without cutting the cable jacket. It relates to a composite cable for communication.

In general, Automatic Meter Reading (AMR) refers to a system that transmits data through a communication network by converting a measurement result of a measurement object located at a distant point into an electrical signal, and processes the data at a terminal. .

These remote meter reading systems are classified into a wireless method without a communication line and a wired method with a communication line according to the communication method used. In particular, the wired method is a power line method, a cable method, or a dedicated line method according to the type of communication line used. And the like.

The power line method is a method using power line communication (PLC). Since data is communicated through a power line using a commercial AC signal as a transmission medium, communication is possible wherever power is supplied through the power line.

As shown in FIG. 1, the remote meter reading system based on power line communication includes a data transmission unit (DTU) 20 and a water substation 10 including a pole, a power meter 31, and a PLC modem. It consists of a customer 30 having a customer 32 and a meter reading server 40 provided with a customer information DB (41).

At this time, the electricity meter 31 transfers the measured meter reading data to the PLC modem 32.

Then, the PLC modem 32 receives and stores the metering data measured through the electricity meter 31, and when the metering data request from the data transmission device 20 is requested, the metering data for the electricity usage of each customer 30 is received. It is transmitted as a PLC signal through the lead wire 50.

The data transmission device 20 provided in the water substation facility 10 including electric poles is connected to the PLC modem 32 to accumulate meter reading data received as a PLC signal from the PLC modem 32 and then accumulate the meter reading data. It is transmitted to the meter reading server 40 by using an optical cable.

That is, between the customer 30 and the data transmission device 20, the meter reading data measured from the customer 30 is transmitted to the PLC communication using the customer lead line 50 as a transmission line, the data transmission device 20 The coaxial cable 60 is used as a transmission line between the wires and the optical cable 80 is used between the data transmission device 20 and the metering server to process the metering service.

Then, the meter reading server 40 receives the meter reading data from the data transmission device 20 and stores it in the customer information DB 41, and performs the electric meter reading of each customer 30 to calculate the fee information accordingly. .

By the way, the power meter communication-based remote metering system that is currently applied, the optical cable 80 and the data transmission device 20 is installed so as to be close to the consumer in accordance with the stable communication processing requirements.

However, currently applied remote meter reading system based on power line communication has caused a decrease in the efficiency of data transmission device, and increased installation cost and construction time.

Therefore, even if the optical cable and the data transmission device are not installed in close proximity to the customer, the signal extraction member can be placed anywhere at the connection point for branching the PLC signal so that the PLC signal can be transmitted and received between the customer and the data transmission device through the customer inlet line. With this, a cable capable of branching a PLC signal was required.

For reference, "complex cable for communication" of the Republic of Korea Patent Publication No. 10-2008-0001134 has been disclosed.

The conventional composite cable for communication includes a first cable having a first cable core and a first cable sheath surrounding the first cable core; A second cable having a second cable core and a sheath for a second cable surrounding the second cable core; At least one through part is formed, and the first cable and the second cable are separated from each other and configured to connect the outer shell for the first cable and the outer shell for the second cable.

The conventional composite cable for communication with such a configuration is a cable for constructing an FTTH (Fiber To The Home) network in which an optical cable is laid up to a consumer in order to provide high quality communication service. It was a cable used.

However, when a conventional communication composite cable is installed as a communication line between data transmission devices, it is necessary to cut the cable in order to branch the PLC signal, thereby increasing the construction time and cost.

In addition, a UTP cable (Unshielded Twisted Pair) that insulates the outside of several pair cables made by twisting two copper wires insulated with a second cable with each other when connecting with a signal extraction member for branching a PLC signal. Cable), so that an incomplete connection point is generated, so the outer shell must be cut, thus increasing the construction time and increasing the connection failure rate.

In addition, the conventional composite cable for communication has a problem that when the signal extraction member is inserted to branch the PLC signal because the outer diameter surface is curved, the center point is not easy to grasp and the work efficiency is lowered.

[Preceding technical literature]

(Patent Document 1) Republic of Korea Patent Publication No. 10-2008-0001134

The present invention is to solve the problems described above, the problem to be solved by the present invention, even if the optical cable and the data transmission device is not installed in close proximity to the customer, PLC signal anywhere in the connection point that can branch the PLC signal PLC signal can be stably transmitted and received between the customer and the data transmission device near the branched and branched PLC signal, reducing construction cost and time, and connection failure rate when connecting to the signal extraction member In addition to reducing power consumption, the company also provides a composite cable for power line communication that can increase work efficiency.

Composite cable for power line communication of the present invention for achieving the above object is provided with an optical cable extending in the longitudinal direction; A coated communication line spaced apart from one side or both sides of the optical cable in the width direction and extended in the longitudinal direction; And an outer sheath extending in the longitudinal direction while surrounding the optical cable and the sheathed communication line so that the spaced position between the optical cable and the sheathed communication line is fixed. The sheath is characterized in that the cross section in the longitudinal direction has a rectangular shape.

The upper outer surface of the outer shell may be formed with a recess recessed downward toward the coated communication line.

The connection groove may be narrower toward the bottom.

A substrate extending in the longitudinal direction is provided inside the shell; The substrate is provided in a plate-shaped base plate portion extending in the longitudinal direction in contact with the inner lower surface of the shell, and protrudes upward from the base plate portion between the coated communication line and the optical cable and between the coated communication line and the inner side surface of the shell. It may include a spacer plate extending to.

The sheathed communication line may be composed of a single core conductor and an insulating sheath surrounding the conductor.

The outer shell 140 may be formed in a curved corner of the longitudinal cross-section.

The outer shell may be formed in a straight shape in which an upper portion of the connecting groove having a longitudinal cross section is extended in the width direction.

According to the present invention, even if the optical cable and the data transmission device are not installed in close proximity to the customer, the PLC signal can be branched at any connection point where the PLC signal can be branched, so that the customer and the data close to the connection point branched with the PLC signal PLC signal can be transmitted and received stably between transmitters

Therefore, the use efficiency of the data transmission device can be improved, and construction cost and time can be reduced.

Further, even if a branch point occurs, the PLC signal can be branched using the signal extraction member without cutting, thereby reducing the construction time and cost.

In addition, the outer shell has a rectangular cross section in the longitudinal direction, and a connection point is provided so that the position and center point of the coated communication line can be easily known, and thus the signal extraction member can be stably connected.

Therefore, not only can the connection failure rate be reduced, but the work efficiency can be improved.

1 is an exemplary view schematically showing a remote meter reading system based on a general power line communication,

2 is an exemplary view schematically showing a remote meter reading system based on power line communication having a composite cable for power line communication of the present invention;

3 is an enlarged view illustrating an enlarged section C and D of FIG. 2,

4 is a perspective view illustrating a composite cable for power line communication according to a first embodiment of the present invention;

5 is a cross-sectional view taken along line AA ′ of FIG. 4.

6 is a perspective view showing a composite cable for power line communication according to a second embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along line BB ′ in FIG. 6.

[Description of the code]

10: Water substation equipment including electric pole

20: data transmission device 30: customer

31: power meter 32: PLC modem

40: meter reading server 41: customer information DB

50: customer lead wire 60: coaxial cable

70: signal extraction member

100: composite cable for power line communication 110: optical cable

120: sheathed communication line 121: conductor

130: base material 131: spacer plate

132: base plate portion 140: outer shell

150: connection groove P: connection point

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

Hereinafter, the horizontal direction of FIGS. 4 and 6 will be referred to as the 'width direction', the direction perpendicular to the ground of FIGS. 4 and 6 will be referred to as the 'length direction' and the directions away from each other in the width direction will be referred to as the 'width direction outside'.

FIG. 2 is an exemplary view schematically illustrating a remote meter reading system based on a power line communication in which the composite cable 100 for power line communication of the present invention is installed, and FIG. 3 is an enlarged view illustrating an enlarged C and D section in FIG. 2.

As shown in Figures 2 to 3, the power meter communication-based remote metering system equipped with a composite cable 100 for power line communication of the present invention is a water substation facility 10 including a data transmission device 20 and poles, It consists of a customer 30 is provided with a power meter 31 and a PLC modem 32 and the meter reading server 40 is provided with a customer information DB (41).

At this time, the electricity meter 31 may measure the meter reading data of the power consumer at a predetermined time interval or by a request from the outside, and transmits the meter reading data to the PLC modem 32.

In addition, the PLC modem 32 is connected to the electricity meter 31 and receives and stores meter reading data measured through the electricity meter 31.

In addition, the PLC modem 32 is connected to the data transmission device 20 to transmit the meter reading data on the amount of electricity used by the customer 30 when the meter data request from the data transmission device 20 as a PLC signal.

In addition, the data transmission device 20 is provided in the water substation facility (10) including the electric pole, connected to the PLC modem 32, accumulating the meter data received as a PLC signal from the PLC modem 32, and then the meter reading server Transmit to 40.

Here, the communication method between the customer 30 with the PLC modem 32 and the data transmission device 20 is PLC communication, and the customer lead wire 50 is used as the communication line.

Meanwhile, the data transmission device 20 and the data transmission device 20 transmit and receive data using the optical cable 110.

At this time, the communication method between the meter reading server 40 and the data transmission device 20 is an optical communication method.

That is, between the customer 30 and the data transmission device 20, the meter reading data measured from the customer 30 is transmitted as a PLC signal using the customer lead wire 50 as a transmission line, and the data transmission device 20 In the middle (間), the optical cable 110 is used as a transmission line to process the meter reading service through optical communication.

On the other hand, between the customer 35 and the data transmission device 20 through the customer lead line 50 also in the customer 35 close to the water substation facility 11 containing the pole without the data transmission device 20 is installed (間). ) PLC signal can be stably transmitted and received, at this time, it is possible to branch the PLC signal to the customer incoming line 50 using the composite cable 100 for power line communication of the present invention.

4 is a perspective view illustrating a composite cable 100 for power line communication according to a first embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line AA ′ of FIG. 4.

4 to 5, the composite cable 100 for power line communication according to the first embodiment of the present invention may include an optical cable 110.

The optical cable 110 extends in the longitudinal direction as a signal line for transmitting data between the data transmission device 20 and the data transmission device 20.

In addition, the optical cable 110 may be provided as a plurality of lines of two or more lines.

The optical cable 110 may be provided in one line, but it is preferable to provide a plurality of lines in two or more lines so that communication can be made using another line when one line fails.

In addition, the optical cable 110 constituting the present invention may be implemented in various types of cables that can be transferred through the glass fiber by converting the electrical signal into an optical signal.

4 to 5, the composite cable 100 for power line communication according to the first embodiment of the present invention may include a cover communication line 120.

The sheathed communication line 120 transmits the PLC signal received from the PLC modem 32 through the customer lead line 50 to the data transmission device 20 or the demodulated PLC via the data transmission device 20 from the optical cable 110. As a signal line for transmitting a signal, the optical cable 110 is spaced apart from one side or both sides of the optical cable 110 in the width direction and is extended in the longitudinal direction.

In addition, the coated communication line 120 may be composed of a conductor 121 made of a single core having a constant diameter and an insulator surrounding and protecting the conductor 121.

In this case, the insulator may be made of a material such as polyethylene (PET) or polyvinyl chloride (PVC) that does not conduct electricity or heat, and may perform an insulation function on the conductor 121.

Accordingly, since the conductor 121 of the sheathed communication line 120 is made of a single core having a constant diameter, the conductor without an incomplete connection point in connection with the signal extraction member 70 for branching the PLC signal flowing through the sheathed communication line 120. It is possible to branch only the PLC signal by being completely connected to 121.

On the other hand, the covering communication line 120 may be provided in one line, but is preferably provided in two lines to increase the transmission output of the PLC signal.

The coated communication line 120 may be provided in two or more lines.

4 to 5, the composite cable 100 for power line communication according to the first embodiment of the present invention may include an outer shell 140.

The outer shell 140 extends in the longitudinal direction to surround the optical cable 110 and the sheathed communication line 120 so that the spaced position of the optical cable 110 and the sheathed communication line 120 is fixed, and the optical cable 110 is spaced apart from each other. And the outer surface of the sheathed communication line 120.

In addition, the outer shell 140 may have a longitudinal cross section having a rectangular shape.

In addition, the outer shell 140 may be formed in any shape as long as the upper portion of the longitudinal section extends in the width direction.

Accordingly, the longitudinal cross section of the outer shell 140 has a rectangular shape or a straight line with an upper portion of the longitudinal cross section extending in the width direction, thereby easily inserting the signal extracting member 70 to be described below into the coated communication line 120. can do.

On the other hand, the outer shell 140 may accommodate and protect the optical cable 110 and the sheathed communication line 120, the signal extracting member 70 can be inserted, and has an elastic polyvinyl chloride (PVC) or polyetherene ( PET) may be made of a material having a component.

In this case, the signal extracting member 70 penetrates the insulator of the outer shell 140 and the coated communication line 120 so that the signal extracting member 70 can be easily connected to the conductor 121 to extract the PLC signal. Say.

On the other hand, the outer shell 140 may include a substrate (130).

The substrate 130 is provided to extend in the longitudinal direction inside the outer shell 140, it is made of a high rigid plastic material, the outer shell 140 can be maintained in a rectangular shape.

In addition, the substrate 130 may increase the tensile strength to withstand the tensile force to stretch the composite cable 100 for power line communication.

In addition, the substrate 130 may include a spacer plate 131 and a base plate 132.

The spacer plate 131 has a plate shape having a predetermined thickness, and the base plate 132 is disposed between the cover communication line 120 and the optical cable 110 and the inner side surface of the cover communication line 120 and the outer shell 140. It extends in the longitudinal direction while being protruded toward.

In addition, the spacer plate 131 is provided to be in close contact with the inside of the optical cable 110 and the cover communication line 120 and the outer shell 140 can minimize the unnecessary space.

Therefore, due to the spacer plate 131, it is possible to prevent the communication failure by reducing the signal interference generated between the cable 110 and the cover communication line 120.

In addition, the base plate 132 extends in the longitudinal direction in contact with the inner lower surface of the shell 140 in a plate shape having a predetermined thickness.

In addition, the base plate portion 132 is provided to be in close contact with the inside of the optical cable 110 and the cover communication line 120 and the outer shell 140 can minimize the unnecessary space.

4 to 5, the composite cable 100 for power line communication according to the first embodiment of the present invention may include a connection groove 150.

The connection groove 150 may be formed on an upper outer surface of the outer shell 140, and may be formed in a concave shape or a concave shape having a narrower width toward the lower side toward the coated communication line 120.

In addition, the connection groove 150 may be formed on the upper outer surface of the outer shell 140 at the shortest distance from the center of the coated communication line 120.

Therefore, due to the connection groove 150 formed on the upper outer surface of the outer shell 140, when the signal extraction member 70 is coupled to the outer shell 140, it is easy to know the position and the center point of the coated communication line 120.

2 to 3, the composite cable 100 for power line communication according to the first embodiment of the present invention is installed in the water substation facility 10 including the pole.

Subsequently, the signal extracting member 70 is connected to the outer shell 140 located in close proximity to the water substation facility 11 including the electric pole in which the data transmission device 20 is not installed. Through the outer groove 140 through the connecting groove 150 for guiding the 120 is connected to the conductor 121 of the coated communication line 120.

At this time, the longitudinal cross section of the outer shell 140 is rectangular, and due to the connection groove 150 formed on the upper portion of the outer shell 140, the signal extraction member 70 is a conductor 121 of the sheathed communication line 120 through which the PLC signal flows. It can be connected stably and completely without incomplete connection point to the center point.

Therefore, the connection failure rate at the time of connection with the signal extraction member 70 can be reduced, and the work efficiency can be increased.

On the other hand, the PLC signal extracted using the signal extraction member 70 may be branched to the customer lead line (50).

Therefore, PLC communication can be performed between the customer 35 and the data transmission apparatus 20 using the customer lead line 50 as a transmission line.

As such, even when the optical cable 110 and the data transmission device 20 are not installed close to the customer 35, the PLC signal can be stably transmitted and received between the customer 35 and the data transmission device 20. Thereby, the meter reading server 40 can perform a remote meter reading smoothly and stably.

In addition, since the data transmission device 20 is not provided so as to be close to the customer 35, the number of installation of the data transmission device 20 can be reduced, thereby reducing the installation cost and construction time, as well as the data transmission device ( 20) can increase the use efficiency.

6 is a perspective view illustrating a composite cable 100 for power line communication according to a second embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along line B-B 'of FIG. 6.

In the composite cable 100 for power line communication according to the second embodiment of the present invention, the remaining components are the same except for the outer shell 140 of the first embodiment, and thus description of the same components is omitted.

The outer shell 140 constituting the composite cable 100 for power line communication according to the second embodiment of the present invention has a rectangular shape in which the edge of the longitudinal section is curved.

Since the edge of the longitudinal section of the outer shell 140 is curved, the air resistance is reduced, the stress applied to the cable by the wind, etc. is reduced, the service life of the cable can be extended, and ultimately the communication reliability can be improved.

In the above description, the present invention has been described with reference to preferred embodiments, but the present invention is not necessarily limited thereto, and a person having ordinary skill in the art to which the present invention pertains does not depart from the technical spirit of the present invention. It will be readily appreciated that various substitutions, modifications and variations can be made.

The present invention relates to a composite cable for power line communication that can branch PLC signals even when an optical cable and a data transmission device are not installed close to a customer in a remote meter reading system, and can be used in a communication field, a cable field, and a remote meter field.

Claims

An optical cable 110 extending in the longitudinal direction;

A sheathed communication line 120 spaced from the one or both sides of the optical cable 110 and extending in the longitudinal direction, respectively; And

It includes; an outer sheath (140) provided to extend in the longitudinal direction surrounding the optical cable 110 and the sheathed communication line 120 so that the separation position of the optical cable 110 and the sheathed communication line 120 is fixed.

The outer sheath 140 is a composite cable for power line communication, characterized in that the longitudinal cross section of the rectangular shape.
The method of claim 1,

Composite cable for power line communication, characterized in that the upper groove on the outer surface 140 is formed with a concave connection groove 150 downward toward the coated communication line (120).
The method of claim 2,

The connection groove 150 is a composite cable for power line communication, characterized in that the width becomes narrower toward the bottom.
The method of claim 1,

A substrate 130 extending in the longitudinal direction is provided inside the shell 140;

The base material 130 is in contact with the inner bottom surface of the outer shell 140 and the plate-shaped base plate portion 132 extending in the longitudinal direction,

A spacer plate 131 extending in the longitudinal direction from the base plate part 132 is provided to protrude upward between the sheathed communication line 120 and the optical cable 110 and between the sheathed communication line 120 and the inner side surface of the sheath 140. Composite cable for power line communication, characterized in that included.
The method of claim 1,

The sheathed communication line 120 is a composite cable for power line communication, characterized in that consisting of a single-conductor conductor 121 and an insulating sheath surrounding the conductor 121.
The method of claim 1,

The outer sheath 140 is a composite cable for power line communication, characterized in that the edge of the longitudinal cross-section is formed in a curve.
The method of claim 2,

The outer sheath 140 is a composite cable for power line communication, characterized in that the upper portion where the connection groove 150 of the longitudinal cross section is extended in the width direction.