KR20150087043A - Apparatus for cable twist detecting and method thereof - Google Patents

Apparatus for cable twist detecting and method thereof Download PDF

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Publication number
KR20150087043A
KR20150087043A KR1020140007427A KR20140007427A KR20150087043A KR 20150087043 A KR20150087043 A KR 20150087043A KR 1020140007427 A KR1020140007427 A KR 1020140007427A KR 20140007427 A KR20140007427 A KR 20140007427A KR 20150087043 A KR20150087043 A KR 20150087043A
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KR
South Korea
Prior art keywords
cable
twist
length
rotation angle
detecting
Prior art date
Application number
KR1020140007427A
Other languages
Korean (ko)
Inventor
박제욱
김상준
이종건
Original Assignee
대우조선해양 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR1020140007427A priority Critical patent/KR20150087043A/en
Publication of KR20150087043A publication Critical patent/KR20150087043A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/026—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring length of cable, band or the like, which has been paid out, e.g. from a reel
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle

Abstract

The present invention relates to an apparatus for detecting cable twist and a method thereof which can detect cable twist and the position of cable twist of a cable in real-time during installation of the cable. The apparatus includes: an electronic tag detection part for detecting the position of the cable installed on a cable tray where the cable is installed; a rotation angle detection part for detecting a rotation angle of a cable drum where the cable is wound; and a control part which judges cable twist by comparing the cable installation length according to the position of the cable detected by the electronic tag detection part with the length of the cable released according to the rotation angle detected by the rotation angle detection part.

Description

[0001] DESCRIPTION [0002] APPARATUS FOR CABLE TWISTING AND METHOD [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to cable twist detection, and more particularly, to a cable twist detection apparatus and method for detecting the presence or absence of cable twist and cable twist position in real time when a cable is installed.

In the process of ship construction, cable laying is not only a lot of people but also the working conditions are very poor due to the narrow working space and the high and deep cable tray, which leads to a lot of cable installation time and safety accidents There is a problem.

In order to solve this problem, an automatic cable installation apparatus using a winch or a feeder has been proposed.

Conventional technology for cable installation is disclosed in Patent Document 1, Korean Patent Registration No. 10-1240191 (Registered on March 28, 2013) and Korean Patent Publication No. 10-2011-0019084 (Published on February 25, 2011) Lt; / RTI >

In the conventional technology disclosed in Patent Document 1, after the drive motor and the drive motor are coupled to the worm gear in such a manner that they are rotated in different directions by a worm and a worm that are coupled in series and rotated by a drive motor, And a pair of feeder balls for feeding and transporting electric wires therebetween.

Patent Document 1 configured in this way facilitates installation of a converter feeder on a converter due to downsizing and weight reduction during ship construction and enables automatic installation of electric wires in a curved portion.

The prior art disclosed in Patent Document 2 includes a plurality of cable laying apparatuses arranged along a conveying path of a cable and having a conveying portion provided with a driving drum for pushing the cable in the conveying direction and a pressing portion pressing the cable to the driving drum, And a control unit for controlling the plurality of cable installation devices.

Patent Document 2 configured in this manner controls the pressing force, the conveying speed, and the transfer torque necessary for cable transfer according to the cable to prevent the cable from being damaged at the time of transferring, and quickly transfers the cable even in a complicated space to lay the cable.

Korea Registered Patent Registration No. 10-1240191 (Registered on February 28, 2013) Korean Patent Publication No. 10-2011-0019084 (published Feb. 25, 2011)

However, in the conventional automatic cable laying apparatus as described above, cable installation can be automatically performed, but there is a disadvantage in that it is impossible to detect the twist of a cable in real time.

If the cable is twisted here, the cable or the cable laying device may be damaged, resulting in waste of manpower and costs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cable twist detection device capable of detecting in real time whether a cable is twisted or not and a cable twist position when a cable is installed, Method.

It is another object of the present invention to provide a cable twist detecting apparatus and method for detecting a twist of a cable in real time when a cable is installed in order to prevent an additional cost, a waste of manpower, and a delay of a working time.

It is still another object of the present invention to provide a cable twist detection apparatus and method that can easily and accurately detect the presence or absence of cable twist in a narrow space where it is difficult to apply a human force when a cable is installed.

Another object of the present invention is to detect cable twist in real time when a cable is laid and to notify a manager (or an operator) immediately when cable twist is detected so that an operator can quickly stop the operation, And to provide a cable twist detecting apparatus and method therefor.

According to an aspect of the present invention, there is provided an apparatus for detecting a cable twist, comprising: an electronic tag detecting unit detecting a position of a cable installed in a cable to which a cable is installed; A rotation angle detector for detecting a rotation angle of the cable drum around which the cable is wound; And a controller for comparing the cable installation length according to the position of the cable and the cable length according to the rotation angle to determine whether or not the cable is twisted.

The cable twist detection apparatus according to the present invention further includes a cable twist alarm unit for alerting cable twist according to cable twist alarm control of the control unit.

Further, the cable twist detection apparatus according to the present invention may further include a display unit for indicating a twisted position of the cable in accordance with the cable twist display control of the control unit.

Wherein the rotation angle detecting unit includes an encoder for detecting a rotation angle of the cable drum.

The controller includes a cable position detector for detecting a cable position with the positional information of the electronic tag detected by the electronic tag detector and detecting a cable installation length based on the cable position.

The controller calculates the cable release speed by calculating the rotation angle and time of the cable drum detected by the rotation angle detector, calculates the calculated cable release speed and cable release time to calculate the cable length index, And a cable length calculation unit for extracting a cable unrolled length pre-registered in the memory with a cable length index.

The control unit may include a cable twist determination unit for determining whether the cable is twisted by comparing the cable installation length detected by the cable position detection unit and the cable release length calculated by the cable length calculation unit. And a cable twist alarm module for alerting the cable twist when the cable twist determination unit determines that the cable is twisted.

According to an aspect of the present invention, there is provided a cable twist detecting method comprising: (a) detecting an electronic tag attached to a cable through an electronic tag detecting unit installed in a converter; (b) calculating the cable installation length based on the detected electronic tag; (c) detecting a rotation angle of the cable drum around which the cable is wound; (d) calculating a cable length loosened in the cable drum based on the detected cable drum rotation angle; (e) comparing the cable installation length calculated in the step (b) with the cable length calculated in the step (d); (f) controlling the display of cable twist and the occurrence of an alarm if it is determined that the twist of the cable is a result of the comparison of step (e).

In the step (b), the cable position is detected by the position information of the electronic tag detected by the RFID detection unit, and the length of cable installation is detected based on the cable position.

In the step (d), a rotation angle and a time of the cable drum detected by the rotation angle detector are calculated to calculate a cable release speed, a cable release index is calculated by calculating the calculated cable release speed and a cable release time, And extracts a cable unrolled length previously registered in the memory with the calculated cable length index.

According to the present invention, it is possible to detect in real time whether a cable is twisted or not and cable twisted position when the cable is installed, thereby preventing additional cost, manpower, and work time from being delayed.

In addition, according to the present invention, it is possible to easily and accurately detect whether or not the cable is twisted even in a narrow space where it is difficult to input manpower when the cable is installed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a cable position detecting system for a cable on a converter in the present invention and a cable automatic laying apparatus for explaining a rotation angle detecting process in a cable drum;
2 is a configuration diagram of a cable twist detection apparatus according to the present invention,
FIG. 3 is a block diagram of the control unit of FIG. 2,
4 is a flow chart illustrating a cable twist detection method in accordance with the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cable twist detection apparatus and method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a cable automatic installation apparatus for explaining a cable position detection method on a converter and a rotation angle detecting process in a cable drum in the present invention. FIG.

As shown in FIG. 1, the automatic cable laying apparatus automatically places the cable while moving on a cable tray 10 on which the cable 1 is installed. The cable automatic installation device may be a feeder or a pneumatic cylinder. An electronic tag 30 for recognizing a cable is attached to an end of the cable 1 installed in the converter 10. And an electronic tag detecting unit 20 for recognizing the electronic tag 30 is provided at every predetermined interval of the converter 10. Here, the electronic tag may be implemented by an RFID tag, and the RFID detection unit 20 may be implemented by an RFID reader.

When the cable 1 is wound on the cable drum 40 and the cable 1 wound on the cable drum 40 by the automatic cable installation device starts to be laid on the converter 10, The rotation angle detecting unit 50 mounted on the shaft detects the rotation angle of the cable drum 40.

In this case, by providing a rotation angle detecting device such as an encoder on the axis of the cable drum 40, it is possible to easily detect the rotation angle according to the rotation of the shaft. Since the rotation angle detection method using an encoder is a technique well known in the art for detecting the rotation angle, a detailed description thereof will be omitted.

FIG. 2 is a block diagram of a cable twist detection apparatus according to the present invention, which includes an electronic tag detection unit 20, a rotation angle detection unit 50, a control unit 120, a display unit 130, a memory 140 and a cable twist alarm unit 150 ).

The electronic tag detecting unit 20 detects the position of the cable 1 installed on the converter 10 on which the cable 1 is installed.

The rotation angle detecting unit 50 serves to detect the rotation angle of the cable drum 40 on which the cable 1 is wound.

The controller 120 compares the cable installation length according to the position of the cable 1 and the cable length according to the rotation angle to determine whether the cable is twisted or not.

As shown in FIG. 3, the controller 120 detects a cable position with the position information of the electronic tag detected by the RFID detection unit 20, and detects a cable position for detecting a cable installation length based on the cable position A detecting unit 121; Calculates the cable release speed by calculating the rotation angle and time of the cable drum detected by the rotation angle detector (50), calculates the calculated cable release speed and cable release time to calculate the cable length index, A cable length calculation unit 122 for extracting a cable loosened length previously registered in the memory 140 as a length index; A cable twist determination unit 123 for comparing the cable installation length detected by the cable position detection unit 121 and the cable release length calculated by the cable length calculation unit 122 to determine whether or not the cable is twisted; And a cable twist alarm module 124 for alerting cable twist if the cable twist determination unit 123 determines that the cable is twisted.

The cable twist alarm unit 150 alerts the cable twist according to the cable twist alarm control of the controller 120 and the display unit 130 controls the cable twist indications And a display unit 130 for displaying an image.

Here, the control unit 120, the display unit 130, the memory 140, and the cable twist alarm unit 150 may be implemented as a single controller.

Hereinafter, the operation of the cable twist detection apparatus according to the present invention will be described in detail.

First, the cable drum 40 wound with the cable 1 is installed at the cable installation position, and the cable 1 wound around the cable drum 40 is laid on the converter 10 using the automatic cable installation device. Here, an electronic tag for recognizing the cable 1 is attached to the start end of the cable 1.

The electronic tag detecting unit 20 installed at every predetermined interval of the converter 10 recognizes the electronic tag of the cable 1 when the cable 1 starts to be installed in the converter 10. [ For example, the electronic tag detector 20 recognizes the electronic tag through communication when the electronic tag mounted on the cable 1 comes close to the recognition distance set in accordance with the recognizable distance.

The electronic tag detection unit 20 recognizing the electronic tag transmits the electronic tag detection signal to the control unit 120. At this time, it is preferable that the electronic tag detection signal includes a unique identification number of the electronic tag detector 20 for identifying the position of the electronic tag. Accordingly, the control unit 120 can determine from which position the electronic tag detection unit 20 has generated the electronic tag detection signal.

The cable position detecting unit 121 in the control unit 120 detects the position of the electronic tag detecting unit 20 through the unique identification number included in the electronic tag detecting signal when the electronic tag detecting signal is received from the electronic tag detecting unit 20, . And extracts the cable installation length stored in the memory 140 based on the determined location information, and transmits the extracted cable installation length to the cable twist determination unit 123. Here, the unique identification number is 01 in the case of the electronic tag detection unit 20 installed at the initial position of the converter 10 (cable installation start position), 02 in the electronic tag detection unit provided at the next position, Is assigned as 03. In the memory 140, a cable installation length table matching the cable installation length with the unique identification number is stored. For example, a cable installation length table such as 01 = 1m, 02 = 2m, 03 = 3m is stored. Therefore, the cable position detection unit 121 can easily recognize the position of the cable installed using only the electronic tag detection signal generated in the electronic tag detection unit, and can easily determine the cable installation length on the converter 10 You will know. If the electronic tag detection unit is installed too close to the converter, wasteful installation occurs. If the electronic tag detection unit is installed too far away, the accuracy of the cable installation length calculation is degraded. Therefore, it is preferable that the electronic tag detection unit is installed in an appropriate number of suitable positions.

When the cable 1 starts to be installed, the cable drum 40 rotates, and the rotation angle detector 50 detects the rotation angle of the cable drum 40 and transmits the rotation angle to the controller 120.

The cable length calculation unit 122 of the control unit 120 calculates the rotation angle of the cable drum 40 and the time T to calculate the cable release speed. If the time information and the rotation angle information are known, the rotation speed of the cable drum 40 can be known. This rotational speed is the cable release speed at which the cable 1 is unwound from the cable drum 40.

Next, the cable length index (cable release rate x cable release time) is calculated by calculating the cable release speed and the cable release time. Here, the cable release time can be easily known by counting the time from when the rotation angle detection signal is received. That is, the generation of the rotation angle detection signal means that the cable drum 40 rotates, and that the cable drum 40 rotates means that the cable 1 wound on the cable drum 40 is released. Therefore, the cable release time can be calculated by counting the generation time of the rotation angle detection signal.

Thereafter, the cable length extracted in the memory 140 is extracted by the calculated cable length index and transmitted to the cable twist determination unit 123. Here, the memory 140 stores a cable release length calculation table. The cable pull-out length calculation table is a table in which the calculated pull-out cable length is matched with the index calculated by the cable pull-out speed and the cable pull-out time. Therefore, by using such a released cable length calculation table, it is possible to detect a cable length that is released in real time.

The cable twist determination unit 123 receives the cable length from the cable position detection unit 121 in real time and receives the cable length from the cable length calculation unit 122. The cable twist determination unit 123 compares the cable length . That is, it is judged that the cable laid on the converter 10 is twisted if the length of the cable that is loosened is longer than the length of the laying cable. In this case, when the +? (Installation interval compensation value) is added to the length of the installation cable in consideration of the installation interval of the electronic tag detection unit, it is possible to more accurately determine whether or not the cable is twisted.

If it is determined that the cable is twisted, the cable twist signal is transmitted to the cable twist alarm module 124.

The cable twist alarm module 124 generates an alarm display control signal and an alarm control signal in real time when the cable twist signal is transmitted.

In accordance with the display control signal, the display unit 130 displays the cable twist state on the screen. At this time, it is preferable to display the current cable installation position information, the released cable length information, the cable twist discovery position information, and the like. Thus, the manager (or the operator) can recognize whether cable twist occurs at a position where only the information displayed on the display unit 130 is displayed.

In addition, according to the alarm control signal, the cable twist alarm unit 150 alerts the cable twisted state. The alarm can be audibly alarmed by a buzzer or the like, and can be visually alarmed by a lamp or the like.

When a cable twist alarm is generated in real time by the cable twist alarm unit 150, the operator can know whether or not the cable twists in real time while performing another operation.

If the cable is judged to be twisted, it will stop working immediately and prevent cable damage or damage to the cable installation caused by cable twist. When the cable is twisted alarm, various information for judging the cable twist through the display part can be obtained.

4 is a flowchart showing a cable twist detection method according to the present invention, wherein S represents a step.

(A) detecting (S101) an electronic tag 30 attached to a cable 1 through an electronic tag detecting unit 20 installed in the converter 10; (b) calculating a cable installation length based on the detected electronic tag 30 (S102); (c) detecting a rotation angle of the cable drum 40 around which the cable is wound (S103); (d) calculating a cable length loosened in the cable drum 40 based on the detected cable drum rotation angle (S104); (e) comparing the cable installation length calculated in the step (b) with the cable length calculated in the step (d) (S105); (f) controlling the indication and alarm occurrence of the cable twist if it is determined that the twisted cable is a result of the comparison in the step (e) (S106 to S107).

The cable twist detecting method according to the present invention will be described in detail as follows.

First, when the installation of the cable 1 is started in the converter 10 in step S101, the electronic tag 30 is detected through the electronic tag detector 20 installed every predetermined interval of the converter 10. [ As a result, when the electronic tag 30 is detected, the process proceeds to step S102 and detects the installed cable position information using the electronic tag detection signal of the electronic tag detection unit 20 that detects the electronic tag. The length of the cable installed in the converter 10 is calculated based on the installed cable position information.

Next, at the step S103, when the cable is started to be installed, the cable drum 40 is rotated and the cable drum 40 is rotated using the rotation angle detecting means such as an encoder provided on the rotating shaft of the cable drum 40, As shown in Fig.

Thereafter, in step S104, the length of the cable 1 wound on the cable drum 40, that is, the length of the loosened cable, is calculated using the detected rotation angle. Here, in step S104, a cable release speed is calculated by calculating the rotation angle and time of the detected cable drum 40, and a cable length index is calculated by calculating the calculated cable release speed and cable release time. Then, the extracted cable length is stored in the memory 140 using the calculated cable length index.

In the present invention, the cable length is firstly calculated, and then the cable length is calculated. However, in order to simplify the explanation, it is assumed that the two issues are separated by different modules Almost simultaneously.

Next, in step S105, the length of the cable installation is compared with the length of the untwisted cable. If the cable installation length and the untwisted cable length are the same or extremely similar to each other, it is determined that there is no cable twist, and the process goes to step S101.

On the other hand, when the length of the cable is different from the length of the cable that is unfolded, that is, when the length of the untwisted cable is longer than the length of the cable, the cable is judged to be twisted.

If it is determined that the cable is twisted, the cable twist state is displayed through the display unit 130 in step S106. At this time, it is desirable to display the cable installation length information, the released cable length information, the cable twist position information, and the like.

At step S107, the cable twisted state is audibly audible. This allows the operator (or the manager) to recognize that the cable is twisted in real time and stops the cable installation immediately when the cable is twisted to prevent cable damage or damage to the cable laying device.

Here again, the cable twist indications are described first and the cable twist alarms are described later, but this is only for the convenience of description, and the actual two issues are made almost simultaneously through the different modules.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

INDUSTRIAL APPLICABILITY The present invention is effectively applied to a technology for detecting whether or not a cable is twisted in all industrial fields when a cable is automatically installed on a converter using a cable laying apparatus.

1: Cable
10: Converter
20: Electronic tag detector
30: Electronic tag
40: Cable drum
120:
130:
150: Cable twist alarm

Claims (10)

An electronic tag detecting unit for detecting a position of a cable installed in a cable to which the cable is installed;
A rotation angle detector for detecting a rotation angle of the cable drum around which the cable is wound; And
And a control unit for comparing the length of the cable installed according to the position of the cable detected by the electronic tag detecting unit and the length of the unwound cable according to the rotation angle detected by the rotation angle detecting unit to determine whether or not the cable is twisted. Device.
The cable twist detection apparatus of claim 1, further comprising a cable twist alarm unit for alerting cable twist according to cable twist alarm control of the control unit.
The cable twist detection apparatus according to claim 1, further comprising a display unit for displaying cable twist information according to control of the cable twist display of the control unit.
The cable twist detection apparatus according to claim 1, wherein the rotation angle detection unit includes an encoder for detecting a rotation angle of the cable drum.
The RFID tag according to claim 1, wherein the control unit includes a cable position detecting unit that detects a cable position with the positional information of the electronic tag detected by the electronic tag detecting unit and detects a cable installation length based on the cable position Twist detection device.
6. The apparatus of claim 5, wherein the controller calculates a cable release speed by calculating a rotation angle and a time of the cable drum detected by the rotation angle detector, calculates a cable release speed and a cable release time to calculate a cable length index And a cable length calculation unit for extracting a cable loosened length pre-registered in the memory with the calculated cable length index.
7. The apparatus of claim 6, wherein the control unit comprises: a cable twist determination unit for comparing the cable installation length detected by the cable position detection unit and the cable release length calculated by the cable length calculation unit to determine whether the cable is twisted; Further comprising a cable twist alarm module for alerting the cable twist if the cable twist determiner determines that the cable is twisted.
CLAIMS 1. A method for detecting twist of a cable installed in a converter,
(a) detecting an electronic tag attached to a cable through an electronic tag detecting unit installed in a converter;
(b) calculating the cable installation length based on the detected electronic tag;
(c) detecting a rotation angle of the cable drum around which the cable is wound;
(d) calculating a cable length loosened in the cable drum based on the detected cable drum rotation angle;
(e) comparing the cable installation length calculated in the step (b) with the cable length calculated in the step (d); And
(f) controlling the display of the cable twist and the occurrence of an alarm if it is determined that the twist of the cable is a result of the comparison in the step (e).
The cable twist detection method according to claim 8, wherein the step (b) comprises: detecting a cable position with the positional information of the electronic tag detected by the electronic tag detection unit; and detecting a cable installation length based on the cable position .
The method of claim 8, wherein step (d) comprises: calculating a rotation angle and time of the cable drum detected by the rotation angle detecting unit to calculate a cable release speed; calculating the calculated cable release speed and a cable release time, And extracts a cable loosened length pre-registered in the memory with the calculated cable length index.


KR1020140007427A 2014-01-21 2014-01-21 Apparatus for cable twist detecting and method thereof KR20150087043A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018074635A1 (en) * 2016-10-20 2018-04-26 주식회사 에이스카이 Training apparatus and method for responding to emergency during parachute deployment
KR20190051312A (en) * 2017-11-06 2019-05-15 엘에스전선 주식회사 Marking Cable and Distance Estimation System Using The Same
US11705707B2 (en) * 2017-12-30 2023-07-18 Telescent Inc. Automated installation and reconfiguration of fiber optic and copper cables in large scale data centers
EP4133136A4 (en) * 2020-04-07 2024-04-24 Milwaukee Electric Tool Corp Cable counter for a sewer cleaning machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018074635A1 (en) * 2016-10-20 2018-04-26 주식회사 에이스카이 Training apparatus and method for responding to emergency during parachute deployment
KR20190051312A (en) * 2017-11-06 2019-05-15 엘에스전선 주식회사 Marking Cable and Distance Estimation System Using The Same
US11705707B2 (en) * 2017-12-30 2023-07-18 Telescent Inc. Automated installation and reconfiguration of fiber optic and copper cables in large scale data centers
EP4133136A4 (en) * 2020-04-07 2024-04-24 Milwaukee Electric Tool Corp Cable counter for a sewer cleaning machine

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