KR101102606B1 - Apparatus for detecting short location of long-distance cable - Google Patents

Abstract

PURPOSE: An apparatus for detecting the disconnection position of a long distance cable is provided to accurately and rapidly detect a disconnection position using an auxiliary cable. CONSTITUTION: An apparatus for detecting the disconnection position of a long distance cable arranges an auxiliary cable(20) by section. The auxiliary cable consists of a main line(21) and a plurality of detection lines(23) in a main cable(10). An apparatus for detecting the disconnection position detects at least one or more of resistance, voltage, and current between the detection line and the main line and checks the section disconnection position of the auxiliary cable.

Description

Apparatus for detecting short location of long-distance cable

The present invention relates to a disconnection position detection device for a long distance cable, and more particularly to a disconnection position detection device for a long distance cable for checking the disconnection position of a cable constituting a long distance line.

Long-distance cable is a cable that constitutes a long-distance line, and is being developed to supply gas and water as well as electric lines and communication between countries and land and islands.

In general, long-distance cable is expensive to install on the ground, and the procedure is complicated because of negotiation problems with landowners and neighboring countries, buried 1.5m deep to the sea floor.

Long distance cable damage (communication can cause network paralysis problems) can lead to major inconveniences and astronomical losses. There are many types of damage to long-distance cables, but the most common one is broken wires.

It is important to know the location of cable disconnection quickly and accurately in case of an accident caused by disconnection. In the case of long distance cable under sea, it is not only easy to find the location of disconnection, but also if it is buried 1.5m deep on the sea floor.

In order to solve this problem, a method of adding a separate sensing line or measuring impedance may be used, but the accuracy is low, and it is necessary to rely on expert technology. There is a problem that becomes longer.

An object of the present invention is to solve the problems described above, by installing an auxiliary cable designed to detect the disconnection position in the long-distance cable to ensure that the disconnection position of the long-distance cable can be quickly and accurately identified It is to provide a disconnection position detection device.

According to a feature of the present invention for achieving the above object, the present invention is provided for each section in the main cable, a plurality of detection lines connected to the main bus arranged in the longitudinal direction of the main cable and a predetermined interval connected to the main bus An auxiliary cable consisting of; And a reader unit to which the detection line is connected, and when an induction current is provided from an approaching terminal disposed above the auxiliary cable provided for each section of the main cable, at least one of resistance, voltage, and current between the bus and the plurality of detection lines. And a disconnection position detection information device which detects one or more and sends it to the terminal.

The disconnection position detecting information device is operable to detect at least one or more of resistance, voltage, and current between the bus bar and the plurality of detection lines when an inductive current is provided from the terminal. An induction current section for transmitting the detection information to the terminal.

The reader unit is a semiconductor chip having a plurality of ports, the induction current unit is an induction coil, and the transmitting unit is an RFID (Radio-Frequency IDentification) chip.

The plurality of detection lines are arranged such that one side of the plurality of detection lines is connected at a predetermined interval from both the center of the bus bar and the center of the bus bar to both sides, and the other side extends toward the center of the bus bar.

The plurality of detection lines are covered with a protective cap after the other extended side is collected at the center of the bus bar, and connected to the leader unit by a connector for distributing and closing the detection line side ends of the protective cap into a plurality of strands.

The plurality of detection lines are connected at a predetermined interval to the bus bar, each branched into two strands with respect to the bus bar so that one side extends to one end of the bus bar and the other side extends to the other end of the bus bar. .

The plurality of detection lines are collected at the last both sides of the bus bar and then covered with a protective cap, and connected to the reader unit by a connector for distributing and closing the detection line side ends of the protective cap into a plurality of strands.

The plurality of detection lines have the same length, and there is a difference in a portion where the detection lines are connected to the bus bar.

The auxiliary cable is embedded in the final sheath in the manufacture of the main cable or additionally installed outside the main cable.

According to the present invention, an auxiliary cable composed of a bus bar and a detection line is provided for each section of the main cable, and at least one or more of resistance, voltage, and current between the bus bar and the detection line are detected to detect the disconnection position of the cable. The location of disconnection of long-distance cables such as submarine cables can be checked quickly and accurately. This has the effect of minimizing losses due to damage to long distance cables.

In addition, the present invention is applied to a non-powered disconnection position detection information device for detecting at least one or more of the resistance, voltage, and current between the bus and the plurality of detection lines when the induction current is provided from the terminal to send to the terminal. Therefore, there is an effect that can communicate in a marine environment that is easy to corrode and easily adhered to dirt.

In addition, the present invention can periodically check the long-distance cable, it is possible to check whether the external force that can damage the main cable applied even before the disconnection of the main cable through the periodic check.

In addition, the present invention has the effect that can be applied to the case of submarine cable difficult to access and check the status of the cable.

In addition, the present invention has the effect that even a non-professional person can easily check the disconnection position by using the appropriate terminal and the associated software.

1 is a block diagram showing a disconnection position detection device of a long distance cable according to the present invention.
FIG. 2 is a a 'cross-sectional view of FIG.
3 is a diagram illustrating an embodiment of an auxiliary cable and a disconnection position detection information device connected to an auxiliary cable;
4 is a diagram illustrating a state in which an auxiliary cable of an embodiment installed in a main cable is disconnected.
5 shows another embodiment of an auxiliary cable.
Figure 6 is a view showing a state in which the auxiliary cable of another embodiment installed in the main cable is disconnected.
Figure 7 is a block diagram showing another embodiment of the disconnection position detection device for a long distance cable according to the present invention.
8 is a cross-sectional view taken along line bb ′ of FIG. 7.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a disconnection position detection apparatus for a long distance cable according to the present invention will be described in detail.

In the long-range cable disconnection position detecting apparatus according to the present invention, the auxiliary cable 20 including the bus line 21 and the plurality of detection lines 23 is provided on the main cable 10 for each section, and the bus line 21 is detected. By detecting at least one of resistance, voltage, and current between the lines 23, the disconnection position of each section of the auxiliary cable 20 is confirmed.

The disconnection position of the main cable 10 is determined by checking the disconnection position for each section of the auxiliary cable 20 installed in the main cable 10.

As shown in FIG. 1, the main cable 10 corresponds to a long distance cable, such as an optical communication cable, a power cable, a submarine cable, which is embedded at a depth of about 1.5 m on the sea bottom.

The auxiliary cable 20 includes a bus bar 21 arranged in the longitudinal direction of the main cable 10 and a plurality of detection lines 23 connected to the bus bar 21 at predetermined intervals. The bus line 21 and the detection line 23 are disposed on the main cable 10 such that the corresponding portions are disconnected together when the main cable 10 is disconnected.

The auxiliary cable 20 composed of the bus line 21 and the detection line 23 is composed of insulated wires, respectively, because it transmits only a signal and does not flow a large current, and has a smaller diameter than the main cable 10. In practical application, the diameter of the auxiliary cable 20 may be one tenth or hundreds of the diameter of the main cable 10. Therefore, the auxiliary cable 20 may be manufactured in the form of a flat cable or a film cable.

The auxiliary cable 20 may be embedded in the final sheath in the manufacture of the main cable (see FIGS. 7 and 8) or additionally installed outside the main cable 10 (see FIGS. 1 and 2).

When the auxiliary cable 20 is additionally installed outside the main cable 10, a fixing member 40 may be provided to bundle and fix the auxiliary cable 20 to the main cable 10.

In one embodiment, the plurality of detection lines 23 are connected at one side with a predetermined interval from the center (GND) of the bus 21 and the center (GND) of the bus 21 at a predetermined interval, the other side is the bus (21) It is arranged to extend toward the center of the.

The other extended side of the plurality of detection lines 23 is collected at the center of the bus line 21 and then covered with the protective cap 30, and the end of the detection line 23 side of the protective cap 30 is the plurality of detection lines 23. ) Is terminated by a connector 35 which dispenses and finishes into a plurality of strands.

That is, the detection line 23 extending to the center of the bus line 21 is pulled out to one side of the covering of the auxiliary cable 20 so as to be connected to the semiconductor chip 51 of the disconnection position detection information device 50 to be described below. Cover with cap 30 and then end with connector 35.

As shown in FIG. 3, four detection lines 23 are connected to both sides from the center GND of the bus line 21 and the center of the bus line 21, respectively, and a total of nine detection lines 23 are connected to the bus line 21. Nine detection lines 23 extend toward the center of the bus bar 21 and have a structure that is collected at the center of the bus bar 21.

The disconnection position detection information device 50 for detecting the disconnection position of the main cable 10 is provided. The disconnection position detection information device 50 is disposed above the auxiliary cable 20 to which end portions of the plurality of detection lines 23 are connected and installed in the main cable 10 for each section.

In one embodiment, the auxiliary cable 20 consisting of the bus bar 21 and the plurality of detection lines 23 is disposed in the main cable 10 as shown in FIG. 1, and the bus bar of each auxiliary cable 20 ( 21) The disconnection position detecting information device 50 is disposed above the portion corresponding to the center (between the A and B points).

The disconnection position detecting information device 50 detects at least one or more of resistance, voltage, and current between the bus 21 and the plurality of detection lines 23 when an induction current is provided from the approaching terminal 61. Send it out.

The disconnection position detection information device 50 includes a reader unit to which the plurality of detection lines 23 are connected to the non-powered disconnection position detection information device 50, and when the induction current is provided from the terminal 61, the reader unit detects the bus bar and the plurality of detection units. And an induction current section for operating at least one of resistance, voltage, and current between the lines 23, and a sending section for sending out detection information of the reader section to the terminal.

The reader portion is a semiconductor chip 51 provided with a plurality of ports, the induction current portion is an induction coil 53, and the transmitting portion is an RFID (Radio-Frequency IDentification) chip 55.

The connector 35 is formed by distributing the detection line 23 into a plurality of strands and finishing the semiconductor chip 51. The semiconductor chip 51 detects at least one or more of resistance, voltage, and current between the bus line 21 and the detection line 23, and the detected signal is displayed as disconnection O and connection 1 so that the disconnection position can be confirmed.

For example, in the case of detecting a voltage for checking the disconnection position, each port of the semiconductor chip 51 is a pulled-up port and is connected to the detection line 23, respectively, so that the center of the normal bus line 21 ( GND) is detected, and if a disconnection occurs, a + voltage is detected in the section where the disconnection occurred.

Induction coil obtains high voltage by using electromagnetic induction phenomenon. The induction coil allows the semiconductor chip 51 to detect disconnection information between the bus line 21 and the detection line 23 when an induction current is provided from the terminal 61.

The RFID chip 55 is a radio wave recognition chip. The application of the RFID chip constitutes a contactless position detection information device. RFID chip can communicate if approach current is within a certain distance (about 40cm). RFID chips enable communication in marine environments that are prone to corrosion and dirt.

Since the disconnection position detection information device 50 is located in seawater, it is waterproofed and operated by receiving an induction current in a non-contact manner with the terminal 61. The disconnection position detection information device 50 may record a recent inspection log, GPS information, seawater temperature, etc. in addition to disconnection information, and the recorded information may be used for analyzing the seawater environment.

The terminal 61 may be a terminal provided in a manned or unmanned submersible 60 or a ship. An induction coil is provided in the terminal 61 to generate a magnetic field. When the terminal 61 approaches the disconnection position detection information device 50, the terminal 61 induces electricity to the induction coil 53 of the disconnection position detection information device 50. The semiconductor chip 51 is operated. Induction electricity by the terminal 61 is weak, but sufficient to operate the semiconductor chip 51.

The disconnection position detection device of a long distance cable including the auxiliary cable 20 and the disconnection position detection information device 50 may be installed for each section of the main cable 10, and the GPS of the position of the disconnection position detection information device 50 may be determined. The submersible 60 with the terminal 61 is accessible through the information.

The operation principle of an embodiment will be described.

As illustrated in FIG. 1, the submersible 60 approaches the disconnection position detection information device 50 through the GPS information device to determine the disconnection position of the main cable 10. Accordingly, when the submersible terminal 61 approaches the disconnection position detection information device 50, the induction coil of the terminal 61 creates a strong magnetic field to provide an induced current and the induction coil 53 of the disconnection position detection information device 50. ) Generates electricity.

As shown in FIG. 2, the electricity generated from the induction coil 53 may include at least one of resistance, voltage, and current between the bus line 21 and the detection line 23 by the semiconductor chip 51 connected to the detection line 23. The above signal is detected, and the detected signal is sent to the terminal 61 through the RFID chip 55.

When disconnection of the main cable 10 occurs, the auxiliary cable 20 installed in the main cable 10 is also disconnected, and the disconnection position of the main cable 10 is detected by detecting the disconnection position of the auxiliary cable 20.

As shown in FIG. 4, when a disconnection occurs in a section ③ to ④ of the auxiliary cable 20 installed in the main cable 10, the centers GND of the buses 21 and ④, ⑤, ⑥, ⑦ and ⑧ are detected to be connected, and the centers GND and ③ and ④ of the bus bar 21 are detected to be disconnected. Through this, it is confirmed that disconnection occurred in section ③-④.

If disconnection is indicated as 0 and connection is indicated as 1, the detection signal is 11111111 in the normal case where disconnection accident has not occurred.

The signal detected for each disconnection position is shown in Table 1 below.

Disconnection occurrence section (8 sections) Detection signal ①-② 01111111 ②-③ 00111111 ③-④ 00011111 ④-GND 00001111 GND-⑤ 11111000 ⑤-⑥ 11111000 ⑥-⑦ 11111100 ⑦-⑧ 11111110

[Disconnected: 0, connected: 1]

In one embodiment, the length of each detection line connected to the busbar is different and becomes shorter toward the center, and the section of the auxiliary cable is divided according to the position of the detection line based on the center of the bus (GND) to divide the resistance between the bus and the detection line. Detect signals of voltage, current. In one embodiment, even if a disconnection occurs at a specific position of the main cable, the identification of the disconnection position is accurate and simple.

In addition, as a result of determining the disconnection position, when the main cable is not disconnected and the auxiliary cable is disconnected, it may be determined that the external cable is impacted, and the main cable may be prevented in the future by checking the main cable.

5 is a view showing another embodiment of the auxiliary cable, Figure 6 is a view showing a state in which the auxiliary cable of another embodiment is disconnected. 5 and 6 are different in the method in which the detection line is connected to the bus bar as compared to the embodiment of the present invention.

In another embodiment, the plurality of detection lines 23 are connected at a predetermined interval to the bus bar 21, each branched into two strands with respect to the bus bar 21 so that one side is one end of the bus line 21. It is extended and the other side is arranged to extend to the other end of the bus bar (21).

In another embodiment, the lengths of the detection lines 23 are all the same and only the portions where the detection lines 23 are connected to the bus line 21 are different, and both sides of the bus line 21 at the bus line 21 and the detection line connection part are different. Only the lengths extending to the ends are different. When the length of the detection line 23 is the same, there is an advantage that mass production of the auxiliary cable 20 is possible.

The plurality of detection lines 23 extending to one side or the other side of the bus bar 21 are respectively collected at the last both sides of the bus bar 21 and then covered with the protective cap 30, and the detection line 23 of the protective cap 30. It is closed by the connector 35 which distributes and ends a side end part into a plurality of strands, and is connected to the semiconductor chip 51 of the disconnection position detection information device 50. As shown in FIG.

In this case, the auxiliary cable 20 including the bus bar 21 and the plurality of detection lines 23 is disposed on the main cable 10 as shown in FIG. 7, and the final both sides A of the one auxiliary cable 20 are formed. The disconnection position detection information device 50 is disposed at the point B and the point B).

Of course, the auxiliary cable 20 is not limited to the method of being installed on the main cable by the method of FIGS. 7 and 8, and is embedded in the final sheath or added to the outside of the main cable 10 in the manufacture of the main cable 10. Can be installed as

The operation principle of another embodiment will be described.

In order to detect the disconnection position of the main cable 10, the submersible 60 approaches the disconnection position detection information device 50 through the GPS information. Accordingly, when the terminal 61 of the submersible 60 approaches the disconnection position detection information device 50, the induction coil of the terminal 61 generates a strong magnetic field to provide an induced current and induce the disconnection position detection information device 50. Electricity is generated in the coil 53.

The electricity generated from the induction coil 53 causes the semiconductor chip 51 to detect at least one signal of resistance, voltage, and current between the bus and the detection line, and the detected signal is sent to the terminal 61 through the RFID chip. do.

As shown in FIG. 6, when a disconnection occurs in a section ④-⑤ of the auxiliary cable installed in the main cable 10, one side (point A) of the bus bar 21 is detected that ①②③④ is connected, and the busbar 21 The other side (point B) is detected as ⑤⑥⑦⑧ connected. This confirms that disconnection occurred in section ④-⑤.

If disconnection is indicated as 0 and connection is indicated as 1, the detection signal is 11111111 in the normal case where disconnection accident has not occurred.

The signal detected for each disconnection position is shown in Table 2 below.

Disconnection occurrence section (9 sections) A point detection signal B point detection signal A-① 00000000 11111111 ①-② 10000000 01111111 ②-③ 11000000 00111111 ③-④ 11100000 00011111 ④-⑤ 11110000 00001111 ⑤-⑥ 11111000 00000111 ⑥-⑦ 11111100 00000011 ⑦-⑧ 11111110 00000001 ⑧-B 11111111 00000000

[Disconnected: 0, connected: 1]

In another embodiment, the lengths of the detection lines connected to the bus bar are the same, and only the lengths extending from the connecting portion of the bus line and the detection line to both ends of the bus bar are different. In this case, when disconnection occurs in a specific section of the main cable, detection signals of one side of the bus (A point) and the other side of the bus (B point) are detected opposite to each other.

In another embodiment, at one point of the bus (point A) or the other side of the bus (point B), disconnection information for each section of the auxiliary cable may be grasped, and both points may be checked to double check.

As described above, the terminal 61 of the submersible 60 is approached to the disconnection position detection information device 50 to induce power for disconnection detection and information transmission, and the semiconductor chip 51 is assisted by using the power. When the state of each section of the cable 20 is detected and transmitted to the RFID chip 55, the RFID chip 55 may detect the disconnection position of the main cable 10 by transmitting the detection information to the terminal 61.

This makes it possible to quickly check the disconnection position when the disconnection of the main cable 10 occurs, and also to perform a recovery operation at the time of a fault recovery operation requiring an emergency.

Meanwhile, the interval between the detection lines 23 connected to the bus line 21 can be arbitrarily set, and the number of disconnection occurrence sections processed by one disconnection position detection information device 50 is used for disconnection position detection information device 50. Can be set arbitrarily according to).

For example, if one disconnection section is set to 100m and the bus and detection lines are connected to 20 such disconnection sections, and the auxiliary cable is manufactured and installed on the main cable, the detection range for each disconnection position detection information device is If the distance is 2000m and the disconnection position is detected in a 100km section, approximately 50 disconnection position detection information devices are required.

According to the present invention, it is possible to periodically check a long distance cable and check whether or not external force acting on the main cable may be damaged even before disconnection of the main cable occurs.

In addition, when the disconnection of the main cable occurs, it is possible to quickly check the disconnection position, and the recovery operation can be performed quickly during the trouble recovery operation requiring emergency.

In addition, since the configuration of the auxiliary cable for detecting the disconnection position of the main cable is extremely simple, mass production is possible and the production cost is also low.

In addition, by adopting a non-contact induction power supply, it is possible to apply to the submarine cable that is difficult to access the main cable and check the status.

In addition, non-professional public can easily check the disconnection location by using appropriate terminal and related software.

Within the scope of the basic technical idea of the present invention, many other modifications are possible to those skilled in the art, and the scope of the present invention should be interpreted based on the appended claims. will be.

10: Main cable 20: Auxiliary cable
21: Mothership 23: Detection ship
30: Protection cap 35: Connector
40: fixing member 50: disconnection position detection information equipment
51: semiconductor chip 53: induction coil
55: RFID chip 60: submersible
61: Terminal

Claims (9)

An auxiliary cable installed in the main cable for each section, the auxiliary cable comprising a bus bar disposed in the longitudinal direction of the main cable and a plurality of detection lines connected to the bus bar at a predetermined interval;
And a reader unit to which the detection line is connected, and when an induction current is provided from an approaching terminal disposed above the auxiliary cable provided for each section of the main cable, at least one of resistance, voltage, and current between the bus and the plurality of detection lines. And a disconnection position detection information device for detecting one or more and transmitting the same to the terminal. The method according to claim 1,
The disconnection position detection information device
A reader unit to which the plurality of detection lines are connected;
An induction current unit configured to operate the reader unit to detect at least one of resistance, voltage, and current between the bus bar and a plurality of detection lines when an induction current is provided from the terminal;
And a transmitter for transmitting the detection information of the reader to the terminal. The method according to claim 2,
And the reader portion is a semiconductor chip having a plurality of ports, the induction current portion is an induction coil, and the transmitting portion is an RFID (Radio-Frequency IDentification) chip. The method according to claim 1 or 3,
The plurality of detection lines
The disconnection position detection device of a long distance cable, characterized in that the one side is connected with a set interval from the center of the bus bar and the center of the bus bar at both sides and the other side is extended toward the center of the bus bar. The method of claim 4,
The plurality of detection lines
The extended other side is collected at the center of the bus bar and covered with a protective cap, and connected to the reader unit by a connector for distributing and closing the detection line end of the protective cap into a plurality of strands. Disconnection position detection device. The method according to claim 1 or 3,
The plurality of detection lines
Long distance cable is connected to the bus bar with a set interval, each branched into two strands with respect to the bus bar, one side is extended to one end of the bus bar and the other side is extended to the other end of the bus bar Disconnection position detection device. The method of claim 6,
The plurality of detection lines
A device for detecting a disconnection position of a long-distance cable, which is collected at both ends of the bus bar and then covered with a protective cap, and connected to the reader unit by a connector for distributing and closing the detection line end of the protective cap into a plurality of strands. . The method of claim 6,
The plurality of detection lines are all the same length, the disconnection position detection device for a long distance cable, characterized in that there is a difference in the portion where the detection line is connected to the bus. The method according to claim 1,
The auxiliary cable disconnection position detection apparatus of the long-distance cable, characterized in that embedded in the final cover during the manufacture of the main cable or additionally installed outside the main cable.

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