WO2022065609A1 - Dispositif d'indication de canalisation enterrée pouvant être identifié la nuit et procédé de construction de celui-ci - Google Patents

Dispositif d'indication de canalisation enterrée pouvant être identifié la nuit et procédé de construction de celui-ci Download PDF

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Publication number
WO2022065609A1
WO2022065609A1 PCT/KR2021/001043 KR2021001043W WO2022065609A1 WO 2022065609 A1 WO2022065609 A1 WO 2022065609A1 KR 2021001043 W KR2021001043 W KR 2021001043W WO 2022065609 A1 WO2022065609 A1 WO 2022065609A1
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WO
WIPO (PCT)
Prior art keywords
buried
pipe
marking device
buried pipe
pipeline
Prior art date
Application number
PCT/KR2021/001043
Other languages
English (en)
Korean (ko)
Inventor
송종찬
Original Assignee
송종찬
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.)
Filing date
Publication date
Application filed by 송종찬 filed Critical 송종찬
Publication of WO2022065609A1 publication Critical patent/WO2022065609A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/08—Signs, boards or panels, illuminated from behind the insignia using both translucent and non-translucent layers
    • G09F13/10—Signs, boards or panels, illuminated from behind the insignia using both translucent and non-translucent layers using transparencies
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a device for marking a buried pipe having nighttime identification and a construction method thereof, and more particularly, to easily identify the location and type of buried pipe for various buried pipes buried underground, such as gas pipes, water pipes, and power cable pipes.
  • a device for marking a buried pipe and its construction method which makes it easy to find and identify the location and type of a buried pipe in night field work, and has night identification that can be easily and quickly constructed at an installation site.
  • water supply and gas pipes that supply water and gas, which are essential for our daily life, and electrical and information communication cable pipes are normally used to protect against risks caused by corrosion or other exposures caused by freezing and weathering in winter. to be buried underground.
  • the water supply pipe, gas, and various cable pipes which are buried underground and supply water, gas, electricity, and information data, have some differences depending on the region, but are usually buried at a depth of 1200mm from the ground, and on this buried road A pipe marker will be installed to mark the location of one burial every 20m.
  • the pipeline marker indicates the name of the buried pipeline medium (water supply, gas, electricity, communication), the pressure of the medium in the pipeline (strong, medium), and the flow direction of the medium in the pipeline to inform workers during road repair and pipeline repair work. It has been providing information about safety so that you can be prepared for any safety accidents that may occur.
  • road maintenance and pipeline repair workers not only request confirmation of road underground pipeline construction information to the relevant authorities in advance, but also look at the status displayed on the pipeline marker, and be careful while doing everything possible for any accident or disaster that may occur will proceed with the work.
  • the pipeline indicator that displays the state and location of the buried pipeline only displays the name of the pipeline medium (water supply, gas, electricity, communication), the pressure of the medium in the pipeline, and the flow direction of the medium in the pipeline.
  • the pipeline medium water supply, gas, electricity, communication
  • the pressure of the medium in the pipeline and the flow direction of the medium in the pipeline.
  • the indicator indicating the condition and location of the pipeline buried underground is made of a metal material so that it is not easily deformed. Because it is very buried and installed, it is always subjected to external force by pedestrians or vehicles, and deformation or deviation occurs, making it difficult to recognize the state of the pipeline buried.
  • An object of the present invention is to provide a device for marking a buried pipe and a construction method thereof having night-time identification that can easily identify the location and type of a buried pipe even from a distance.
  • another object of the present invention is to provide a device for marking a buried pipeline having night-time identification that can be easily and quickly constructed using simple equipment at a construction site such as a road boundary stone, and a construction method thereof.
  • a buried pipe marking device for indicating a position of a buried pipe, comprising: a marker body formed in a predetermined shape; and identification means provided on the indicator body to visually identify the position and type of the buried pipe through the emission color of the buried pipe marking device.
  • the indicator body includes a body part open at the top and formed in a circular or polygonal enclosure shape, and a fixing part in which protrusions and grooves are alternately formed on the rear edge of the body part
  • the identification means includes: a light emitting member provided on one side of the inner side of the body; It may include a hard coating of a transparent material provided on the upper surface of the sieve to protect the transparent cover body, and a power supply module provided inside the body portion to supply necessary power to the light emitting member.
  • the light emitting member is composed of a UV-LED lamp
  • the transparent cover body is formed of a polycarbonate transparent sheet containing or coated with an organic/inorganic complex that expresses a specific color
  • the power supply may include a solar cell provided on one side of the lower surface of the transparent cover body, and a rechargeable battery provided on the body portion.
  • a photoluminescent material provided on at least one of the upper surface edge of the transparent cover body and the upper surface edge of the hard coating body and having a color similar to or the same as the color expressed by the organic/inorganic complex compound, or a light emitting body having a fluorescent material; and a pipe information providing means for storing pipe information including a type of a buried pipe, a management agency, a pipe material, a burial depth, and a pipe diameter, and transmitting the pipe information to the operator's terminal device of the worker; may further include.
  • the conduit information providing means comprises: an electronic chip member provided on the other side of the lower surface of the transparent cover body and storing the conduit information; and an antenna member provided on the indicator body and configured to transmit information on the electronic chip member.
  • the channel information providing means may be composed of a passive RFID tag or an active RFID tag.
  • a construction method for constructing and installing a buried pipe marking device in which a ring-shaped installation groove corresponding to the shape of the fixing part of the indicator body constituting the buried pipe marking device according to the above aspect is installed. Formed by drilling at a location, applying a chemical anchor to the installation groove, and flatly pressing and fixing the buried pipe marking device to the installation groove to which the chemical anchor is applied.
  • a construction method is provided.
  • the device for marking a buried pipe having night-time discrimination and a construction method thereof according to the present invention the following effects are provided.
  • the present invention is an effect that can easily identify the buried position and type of various buried pipelines (for example, gas pipes, water pipes, power cable pipes, etc.) buried underground in the time of weak visibility such as at night or in rainy weather there is
  • the present invention has an effect that pedestrians can easily recognize that the buried pipe device is located through the light emission of the buried pipe marking device, and the operator can easily obtain information on the buried pipe.
  • the present invention has the effect of securing excellent workability because it can be easily and easily installed at a construction location such as a road boundary stone with simple equipment,
  • the present invention has the effect of being able to visually recognize and identify more easily because it can be easily constructed on a road boundary stone.
  • the present invention has the effect of ensuring the safe walking of pedestrians through reliable and neat construction.
  • FIG. 1 is a front view schematically showing the configuration of a device for marking a buried pipe having nighttime identification according to the present invention.
  • FIG. 2 is an internal configuration diagram schematically illustrating the internal configuration of a device for marking a buried pipe having nighttime identification according to the present invention.
  • FIG 3 is a perspective view viewed from the lower side of the buried pipe marking device having night identification according to the present invention.
  • FIG. 4 is a photo showing the process of applying a chemical anchor to the installation location of the buried pipe marking device as a demonstration of the construction process of the buried pipe marking device according to the present invention.
  • FIG. 1 is a front view schematically showing the configuration of a device for marking a buried pipe having nighttime identification according to the present invention
  • FIG. 2 is a schematic internal configuration to explain the internal configuration of a device for marking a buried pipe having nighttime identification according to the present invention
  • 3 is a perspective view viewed from the lower side of the buried pipe marking device having nighttime identification according to the present invention.
  • the light emitting member, solar cell, and electronic chip member which are components provided inside the indicator body, are expressed and shown to help understanding of the configuration.
  • the buried pipe marking device having nighttime identification is a buried pipe marking device for indicating the location of a buried pipe including a gas pipe, a water pipe, and a power cable pipe, and as shown in FIGS. 1 to 3, a large indicator body 100; and an identification means 200, and in addition to this, a channel information providing means 300; may further include.
  • the buried pipe marking device having nighttime identification is a buried pipe marking device for displaying the location of a buried pipe including a gas pipe, a water pipe, and a power cable pipe, as shown in FIGS. , a marker body 100 formed in a predetermined shape; and an identification means 200 provided in the indicator body 100 and configured to visually identify the location and type of the buried pipe marking device.
  • the buried pipe marking device having nighttime identification of the present invention stores pipe information including the type of buried pipe, management organization, pipe material, burial depth, and pipe diameter, and in the worker terminal device of the worker, the pipe line It may further include; pipeline information providing means 300 to check the information.
  • the indicator body 100 includes a body part 110 formed in a circular or polygonal enclosure shape with an open top, and a fixing part 120 formed on a rear edge of the body part 110 .
  • the body part 110 shows a case in which it is formed in a circular housing shape.
  • the upper open portion of the body portion 110 is closed and closed by the components of the identification means 200 to be described below. This will be described below.
  • the fixing part 120 of the indicator body 100 is formed in a ring shape on the rear edge of the body part 110 in one embodiment, and the body part 110 and the fixing part 120 are A plurality of through slots may be formed in the connecting part (or the proximal end potion of the fixing part 120 ) to be connected.
  • the chemical used to fix the marker body 100 when fixing the marker body 100 to the installation position in the construction of the buried pipe marker device to be described below By allowing the anchor (chemical anchor) to escape through the through slot so that the chemical anchor can contact the entire area of the body part 110 and the fixing part 120 evenly, and at the same time, the chemical anchor is pulled out through the through slot. It exits so that the indicator body 100 can be seated and fixed flat, that is, horizontally.
  • the protrusions 121 and the grooves 122 are alternately formed along the rear edge of the body part 110. formed and made
  • a chemical anchor used to fix the indicator body 100 when the indicator body 100 is fixed to the installation position in the construction of the buried pipe marking device to be described below.
  • the fixability can be further expanded by increasing the contact area with The anchor is pulled out so that the indicator body 100 can be seated and fixed flatly, that is, horizontally.
  • the fixing part of one embodiment and another embodiment as described above is formed on the edge of the body part 110, after the buried pipe marking device is construction and installed, the lifting of the edge of the buried pipe marking device is prevented and pedestrians are caught Falling can be eliminated.
  • the fixing part 120 is preferably formed in the latter case (another embodiment).
  • the identification means 200 is provided on the indicator body 100 and configured to visually identify the location and type of the buried pipe marking device, and largely includes a light emitting member 210 and a transparent cover body. 220 , and a hard coating body 230 , and a power supply module 240 .
  • the identification means 200 includes a light emitting member 210 provided on one side inside the body part 110 of the indicator body 100 , and an upper surface opening of the body part 110 of the indicator body 100 .
  • the transparent cover body 220 is provided on the upper surface of the transparent cover body 220 and covers the portion and is provided with a fluorescent material that expresses a specific color by the light emission of the light emitting member 210, and the transparent cover body 220 is provided.
  • a hard coating body 230 made of a transparent material provided to protect, and a power supply module 240 provided inside the body part 110 of the indicator body 100 to supply necessary power to the light emitting member 210 .
  • the light emitting member 210 is preferably composed of a UV-LED lamp ( ⁇ em: 365nm).
  • the transparent cover body 220 is formed of a polycarbonate sheet (PC sheet) containing or coated with a phosphor (or an organic-inorganic complex) having a specific color in red, green, blue, or a combination thereof. and luminous efficiency can be increased.
  • the fluorescent material is preferably an organic-inorganic compound having good transparency and excellent thermal and photochemical stability by increasing the degree of dispersion.
  • the hard coating body 230 is made of a material (ie, a coating agent) capable of protecting the transparent cover body 220 while having light transmission properties, and the hard coating body is formed of an upper surface or an upper surface of the transparent cover body 220 and It may be provided with a coating on the back side.
  • a material ie, a coating agent
  • a display unit may be formed to print and display pipeline basic information on the type of buried object, the separation distance, and the tube diameter.
  • the power supply module 240 is provided inside the solar cell 241 provided on one side of the lower surface of the transparent cover body 220 , and the body part 110 of the indicator body 100 . It may be configured to include a rechargeable battery 242 connected to charge the power generated by the solar cell 241 and supply the charging power to the light emitting member 210 .
  • the identification means 200 may further include a light emitting body provided along the edge of the transparent cover body 220 and/or the edge of the hard coating body 230 .
  • the light emitting body may be formed in a circular ring shape or a polygonal ring shape including a photoluminescent material or a fluorescent material, or may be formed in a circular ring shape or polygonal ring shape to which a reflective sheet is attached.
  • the light emitting body is mounted and fixed to a mounting portion formed along the edge of the transparent cover body 220 and/or the edge of the hard coating body 230 .
  • the mounting portion may be formed as a mounting groove formed along the edge.
  • the mounting portion is preferably provided on the transparent cover body 220 , which may be protected by the hard coating body 230 .
  • the photoluminescent material or the fluorescent material included in the light emitting body is used to have a color corresponding to or the same as the fluorescent material provided in the transparent cover body 220 .
  • the identification means 200 configured as described above can easily find a buried pipe marking device with an expression color when disasters and safety accidents occur at night, and can be distinguished by a unique color according to the facilities of various buried objects. In other words, it is possible to quickly respond by easily distinguishing what type of underground pipeline facility is buried with the luminous color expressed by water (blue), electricity (red), gas (yellow), and communication (grey).
  • the buried pipe marking device having the nighttime identification of the present invention stores pipe information including the type of the buried pipe, the management organization, the material of the pipe, the burial depth, and the pipe diameter, and in the worker terminal device of the worker, It may further include; the pipe information providing means 300 configured to be able to check the pipe information.
  • the conduit information providing means 300 is provided on the other side of the lower surface of the transparent cover body 220, and the conduit information including the type of the buried conduit, the management institution, the material of the conduit, the burial depth, and the conduit diameter is stored electronically. It includes a chip member 310 and an antenna member 320 provided on the indicator body 100 and configured to transmit information on the electronic chip member 310 .
  • the channel information providing means 300 is preferably composed of an RFID tag in which the electronic chip member 310 and the antenna member 320 are integrally formed.
  • the RFID tag may be composed of an active RFID tag and a passive RFID tag.
  • the required power is provided from the rechargeable battery 242
  • a terminal device (dedicated) carried by the operator. It is operated by the electromagnetic field of the lead).
  • the RFID tag may be configured as an active RFID tag in terms of improved recognition distance, or may be configured as a passive RFID tag operated by an electromagnetic field of a terminal device (dedicated reader) carried by an operator.
  • FIG. 4 is a photo showing the process of applying a chemical anchor to the installation location of the buried pipe marking device as a demonstration of the construction process of the buried pipe marking device according to the present invention.
  • the installation location of the buried pipe marking device is taken as an example of a road boundary stone.
  • the construction method of the buried pipe marking device according to the present invention is to construct and install the buried pipe marking device configured as described above, and the indicator body 100 described above at the installation location (eg, road boundary stone or road surface). After drilling and forming a ring-shaped installation groove corresponding to the shape of the fixing unit 120, an adhesive, preferably a chemical anchor, is applied to the installation groove, and then the buried pipe marking device is flatly pressed and fixed. done by making
  • the pressure-fixed buried pipe marking device allows the chemical anchor to escape through the through slot or groove 122 formed in the fixing unit 120 so that the buried pipe marking device is flat, that is, horizontally. It can be seated and fixed.
  • various buried pipelines for example, gas pipelines, water pipelines, electric power cable pipe, etc.
  • the type of the buried pipe can be easily identified. It has the advantage of being easily obtained.
  • the present invention relates to a device for marking a buried pipe having nighttime identification and a construction method thereof, and more particularly, to easily identify the location and type of buried pipe for various buried pipes buried underground, such as gas pipes, water pipes, and power cable pipes.
  • it makes it easy to find and identify the location and type of the buried pipe in the field work at night, and it can be used in the field of a buried pipe marking device and its construction method with night identification that can be easily and quickly constructed at the installation site Do.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Accounting & Taxation (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Business, Economics & Management (AREA)
  • Computer Hardware Design (AREA)
  • Marketing (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)

Abstract

La présente invention concerne un dispositif d'indication de canalisation enterrée pouvant être identifié la nuit et un procédé de construction de celui-ci, l'emplacement d'enfouissement et le type de canalisation en rapport avec divers types de canalisations enterrées, notamment un tuyau de gaz, un tuyau d'eau, et un tuyau de câble électrique, qui sont enterrées dans le sol pouvant être facilement identifiés, l'emplacement et le type de la canalisation enterrée pouvant être facilement trouvés et identifiés en particulier pendant un travail de nuit sur le terrain, et l'installation pouvant être réalisée facilement et rapidement sur un site d'installation. La présente invention concerne un dispositif d'indication de canalisation enterrée permettant d'indiquer l'emplacement d'une canalisation enterrée, le dispositif comprenant : un corps indicateur formé pour avoir une forme prédéterminée; et un moyen d'identification disposé sur le corps indicateur pour permettre à un utilisateur d'identifier à l'œil nu l'emplacement du dispositif d'indication de canalisation enterrée et le type de la canalisation grâce à une couleur lumineuse.
PCT/KR2021/001043 2020-09-28 2021-01-27 Dispositif d'indication de canalisation enterrée pouvant être identifié la nuit et procédé de construction de celui-ci WO2022065609A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200125671A KR102365251B1 (ko) 2020-09-28 2020-09-28 야간 식별성을 갖는 매설 관로 표지 장치 및 이의 시공 방법
KR10-2020-0125671 2020-09-28

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WO2022065609A1 true WO2022065609A1 (fr) 2022-03-31

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006202319A (ja) * 2004-12-21 2006-08-03 Digital Information Technologies Kk タグ保持体
KR20090090119A (ko) * 2008-02-20 2009-08-25 대명쎄라믹(주) 지중선로 표지기
KR20110021098A (ko) * 2009-08-25 2011-03-04 현대중공업 주식회사 야간 인식용 ｒｆｉｄ 태그장치 및 이의 설치방법
KR20180100742A (ko) * 2017-03-02 2018-09-12 대진기술정보 (주) 표지주 설치형 표지판 및 이의 설치방법
KR102067633B1 (ko) * 2018-06-28 2020-01-17 대진기술정보 (주) 매설물 표지판

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200193018Y1 (ko) 2000-03-30 2000-08-16 이수희 가스관의 매설위치 표시구
KR200318753Y1 (ko) 2003-03-04 2003-07-02 이긍재 지하관로표시기
KR200314493Y1 (ko) 2003-03-06 2003-06-02 권정규 매설 관로 표시기
KR200453127Y1 (ko) 2008-12-01 2011-04-13 백인환 관로 표지기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006202319A (ja) * 2004-12-21 2006-08-03 Digital Information Technologies Kk タグ保持体
KR20090090119A (ko) * 2008-02-20 2009-08-25 대명쎄라믹(주) 지중선로 표지기
KR20110021098A (ko) * 2009-08-25 2011-03-04 현대중공업 주식회사 야간 인식용 ｒｆｉｄ 태그장치 및 이의 설치방법
KR20180100742A (ko) * 2017-03-02 2018-09-12 대진기술정보 (주) 표지주 설치형 표지판 및 이의 설치방법
KR102067633B1 (ko) * 2018-06-28 2020-01-17 대진기술정보 (주) 매설물 표지판

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