KR101661513B1 - Manhole Apparatus of Water Supply with Safety Function - Google Patents

Manhole Apparatus of Water Supply with Safety Function Download PDF

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Publication number
KR101661513B1
KR101661513B1 KR1020160035436A KR20160035436A KR101661513B1 KR 101661513 B1 KR101661513 B1 KR 101661513B1 KR 1020160035436 A KR1020160035436 A KR 1020160035436A KR 20160035436 A KR20160035436 A KR 20160035436A KR 101661513 B1 KR101661513 B1 KR 101661513B1
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South Korea
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manhole
antenna
detection unit
hole
cylinder rod
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KR1020160035436A
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Korean (ko)
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최한순
최영순
신세철
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주식회사 보람
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Economics (AREA)
  • Hydrology & Water Resources (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Strategic Management (AREA)
  • General Business, Economics & Management (AREA)
  • Primary Health Care (AREA)
  • Theoretical Computer Science (AREA)
  • Marketing (AREA)
  • Human Resources & Organizations (AREA)
  • Environmental & Geological Engineering (AREA)
  • Tourism & Hospitality (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Sewage (AREA)

Abstract

The present invention provides a water and sewage manhole device having a safety monitoring function which optimally configures motion of a transmission antenna to sense information necessary for manhole management of flooding, harmful gas and the like and efficiently transmit the information to the outside, thereby preventing an accident due to flooding or harmful gas. According to the present invention, a direction of an embedded antenna buried under the ground is converted to a radio wave receiving unit direction in which a radio wave is accurate so that sensing information is stably transmitted even when the antenna is buried under the ground.

Description

(Manhole Apparatus of Water Supply with Safety Function)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water and sewage manhole apparatus having a safety monitoring function in civil engineering field, and more particularly, to a water and sewage manhole apparatus having a safety monitoring function, To a water and sewage manhole apparatus having a safety monitoring function for preventing flooding of a manhole or accident caused by noxious gas.

The manhole is designed to allow people to go in and out to inspect, repair, or clean water pipes, sewers, and wires in the ground. However, in general, the inside of a manhole without work is sealed for a long time and the entrance is relatively inconvenient, so it is not easy to check the internal state.

There is a harmful gas generated by the electric field, the inflow of water and the corruption of the foreign matter introduced into the inside of the manhole, and pollutants due to the lack of ventilation. Such harmful gas is a risk factor that can lead to human accidents if workers inhale the inside of a manhole to work.

Especially, since the specific gravity of most of the harmful gas is heavier than air, it is essential to measure the concentration of oxygen and gas before entering and leaving the manhole.

In addition, frequent occurrence of inundation in a manhole is an unavoidable factor due to the structure of a manhole that is located below the ground. When floods occur due to heavy rainfall, and when small amounts of water are accumulated over a long period of time and slowly flooded Therefore, it is not easy to predict the progress of immersion and the maintenance period with the water level detection method at a certain point (for example, upper, middle, and lower).

In order to predict the maintenance period of the manhole, accurate water level measurement should be performed inside the manhole, and an appropriate maintenance period can be calculated only when the external manager correctly confirms the change of the water level according to the immersion degree.

The manhole has a characteristic that it can not be confirmed instantly even in case of need such as an intrusion of an outsider or an accident.

In order to overcome the difficulty of manhole management, it is essential to install a sensor to obtain necessary information in the manhole, and to develop a remote information monitoring system of the manhole so that the information detected by the sensor can be transmitted to a specific point.

Korean Registered Patent No. 10-0545911 (Registered Date: January 18, 2006) Title of invention: "Manhole Condition Monitoring System"

In order to solve the problems and necessities of the related art, the present invention is configured to optimize the movement of the transmission antenna in order to sense information necessary for manhole management such as immersion and noxious gas in the manhole and efficiently transmit the information to the outside, And to provide a water and sewage manhole device having a safety monitoring function for preventing accidental flooding or accident caused by harmful gas.

In order to achieve the above object, a water supply and drainage manhole apparatus 100 having a safety monitoring function according to the present invention includes a manhole body 101 buried underground and having a constant internal space; A manhole 102 formed through an upper surface of the manhole body 101; A manhole hole extension part 103 formed upwardly from the manhole hole 102; A manhole cover 104 which covers the upper surface of the manhole-hole extending portion 103 and hermetically closes and is installed at the same height as the ground surface; An antenna mounting hole 110 formed through the upper surface of the manhole body 101 on the other side where the manhole hole 104 is formed; An antenna mounting hole extension part 111 extending upward from the antenna mounting hole 110; A sensing device 130 sensing a state of the inside of the manhole body 101 along a wall surface or a space inside the manhole body 101; A processing device (120) for acquiring and storing the detected information through the sensing device (130); And a buried antenna device (200) installed on an inner hollow portion (201) formed on an upper portion of the antenna mounting hole extension portion (111) and transmitting and receiving information transmitted from the processing device (120) The antenna device 200 is installed on the upper surface of the antenna mounting hole extension 111 at a height corresponding to the ground surface and the antenna 204 is installed on the inner hollow portion 201, And an elastic plate 205a formed at a lower portion of the elastic plate 205a so as to support the elastic plate 205a and the support plate 205. [ And a cylinder rod 210 coupled to a lower portion of the rotary member 206 and capable of moving up and down. The cylinder rod 210 includes a cylinder rod 210, A cylinder body 211 which penetrates the cylinder body 211 in the vertical direction, And a hydraulic line (220) of a second hydraulic line (224), which are arranged in parallel along the longitudinal direction on the inside or the outside of the cylinder body (211) The first and second hydraulic lines 222 and 224 are provided with first and second valves 246 and 248 respectively and the first and second hydraulic lines 222 and 224 are provided with first and second valves 246 and 248, The first and second valves 246 and 248 are connected to the driving unit 240 including the first and second valves 246 and 248 and the second driving unit 244. The first and second valves 246 and 248 are connected through the driving unit 240, 248 are opened or closed to move the cylinder rod 210 to move the antenna 204 up or down or to drive the motor 136 to rotate the rotation member 206 connected to the motor 136 (140) for controlling the antenna (204) to move in a slanting manner obliquely by rotating forward and backward and horizontally, It characterized in that it comprises.

The present invention having the above-described structure is configured to optimize the movement of a transmission antenna in order to sense information required for manhole management, such as immersion in a manhole, harmful gas, etc. and efficiently transmit the information to the outside, .

According to the present invention, since the direction of the buried antenna embedded in the ground is controlled to be accurately adjusted in the direction of the radio wave receiving unit, the sensing information can be transmitted stably even when the antenna is buried underground.

1 is a sectional view of a water supply and sewage manhole apparatus having a safety monitoring function according to an embodiment of the present invention.
2 is a view showing a configuration of a buried type antenna device according to an embodiment of the present invention.
FIG. 3 is a view showing an antenna longitudinally, horizontally rotated, and up-and-down in a buried antenna device according to an embodiment of the present invention.
And
4 is a block diagram briefly showing an internal configuration of a water supply and drainage manhole apparatus having a safety monitoring function according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

The conventional manhole apparatus is difficult to accurately measure the level of water in accordance with the degree of immersion in the manhole, and even if a sensor capable of obtaining necessary information is installed in the manhole, the information detected by the sensor embedded in the underground can not be accurately transmitted to a specific point, Information surveillance system is not effectively used.

The present invention is configured to optimize the movement of a transmission antenna in order to sense information necessary for manhole management such as immersion in a manhole, harmful gas, etc. and efficiently transmit the information to the outside, thereby improving the safety Provides water and sewage manhole equipment with monitoring function.

FIG. 1 is a cross-sectional view of a water supply and sewage manhole apparatus having a safety monitoring function according to an embodiment of the present invention, FIG. 2 is a view showing the configuration of a buried type antenna apparatus according to an embodiment of the present invention, FIG. 4 is a block diagram schematically illustrating the internal structure of a water supply and drainage manhole apparatus having a safety monitoring function according to an embodiment of the present invention. .

A water supply and drainage manhole apparatus 100 having a safety monitoring function according to an embodiment of the present invention includes a manhole body 101, a manhole hole 102, a manhole hole extension portion 103, a manhole cover 104, An antenna mounting hole extension part 111, a processing device 120, a sensing device 130, and a buried antenna device 200.

The manhole body 101 refers to a structure buried in the ground for installation of piping or electric / electronic communication facilities. The manhole body 101 may be made of a material such as concrete or FRP, and a closed space is formed in the inside of the manhole body 101 to provide a pipe or the like. The shape of the manhole body 101 may have various shapes such as a rectangular parallelepiped or a cylinder.

As shown in FIG. 1, a manhole 102 is formed in the upper side of the manhole body 101, which is a passageway through which a worker can go for maintenance work or the like inside the manhole body 101. It is preferable that the manhole hole 102 is formed to have a minimum size that an operator can pass through.

The manhole hole 102 extends upward and opens to the ground surface. For this, the manhole hole extension part 103 is formed to extend to the ground surface. The upper opening of the manhole extension 103 is closed by the manhole cover 104.

At this time, a sealing member 105 may be further provided at a portion where the manhole hole extension portion 103 and the manhole cover 104 are in contact with each other for waterproofing the inner space of the manhole body 101.

The manhole cover 104 is detachably installed from the manhole hole extension part 103. For example, when the manhole cover 104 is lifted from the upper side, it can be opened upward. Since the manhole cover 104 is installed so as to be exposed to the ground surface, the vehicle or the like can pass over the manhole cover 104.

Therefore, the manhole cover 104 must be made of a material that is not damaged by external pressure or impact, and the manhole hole extension portion 103 may be formed of a material such as a load of the manhole cover 104 and an external load A material capable of supporting both, for example, a concrete structure or a pipe structure made of iron, or the like.

The antenna mounting hole 110 is formed through the upper surface of the manhole body 101 on the other side where the manhole 102 is formed.

The antenna mounting hole 110 is a structure formed only in the monitoring type waterproof manhole according to the present embodiment, unlike a general manhole for installing the flush antenna device 200 described later. The installation of the buried antenna device 200 in the manhole 102 may interfere with the worker's entrance and exit, and may cause a management problem. Therefore, the antenna installation hole 110 is separately formed. Since the antenna installation hole 110 does not need to be passed by the operator, the antenna installation hole 110 may be formed to have a size smaller than that of the manhole hole 102, It is enough to have it.

The antenna mounting hole 110 is formed in the same manner as the manhole hole 102 by extending the antenna mounting hole extending portion 111 in the upward direction. A buried antenna device 200 is embedded in an upper surface of the antenna mounting hole extension part 111.

The upper surface of the buried antenna device 200 and the upper surface of the antenna mount hole extension portion 111 are completely in close contact with each other and are installed in a state in which water or air can not pass through.

A buried antenna device 200 is installed in the upper portion of the antenna mount hole extension part 111.

The buried type antenna device 200 transmits and receives information transmitted from the processing device 120 to the outside in a state of being buried in the ground. To this end, the buried antenna device 200 of the present invention is a component installed on the upper surface of the antenna mounting hole extension part 111 at a height coinciding with the ground surface, and is provided with a space for installing the antenna 204, It plays a role of protecting safely. It also functions to prevent water or the like from flowing into the installed antenna 204.

The buried type antenna device 200 includes an inner hollow portion 201 formed on an upper portion of the antenna mount hole extension portion 111 and includes a protective sealing member 202 for closing the upper surface of the buried type antenna device 200 do.

The antenna 204 is provided in the inner hollow 201 and the support plate 205 is provided on the lower surface of the antenna 204 and the antenna 204 is formed on the lower portion of the support plate 205 A rotary member 206 formed on the lower portion of the elastic plate 205a and a cylinder rod 210 coupled to a lower portion of the rotary member 206. [

The elastic plate 205a is a member for imparting elasticity to the support plate 205, and may be composed of an elastic spring or the like.

The rotary member 206 is configured to be rotatable by receiving the driving force of the motor 136 so that the support plate 205 and the elastic plate 205a can be rotated forward and backward and leftward and rightward.

The cylinder rod 210 includes a cylinder body 211 penetrating through the cylinder rod 210 in a direction perpendicular to the cylinder rod 210 and a plurality of hydraulic lines 220 ).

A rotating roller 230 including a first rotating roller 232 and a second rotating roller 234 guiding the cylinder rod 210 in a vertical direction of the cylinder rod 210 is formed at a lower portion of the cylinder body 211.

The plurality of hydraulic lines 220 includes a first hydraulic line 222 and a second hydraulic line 224 and the first hydraulic line 222 and the second hydraulic line 224 are connected to the inside of the cylinder body 211 And is disposed in the lower portion of the cylinder body 211 in order.

The cylinder body 211 includes an inflow portion 226 through which hydraulic pressure flows and an outflow portion 228 through which the hydraulic pressure flows out.

The first hydraulic line 222 and the second hydraulic line 224 are respectively connected to the inlet 226 and the hydraulic pressure introduced into the inlet 226 is supplied to the cylinder rods 222, (210), and then flows out to the outlet (228). At this time, the cylinder rod 210 is moved upward by the hydraulic pressure supplied through the first and second hydraulic lines 222 and 224.

The first and second hydraulic lines 222 and 224 are provided with first and second valves 246 and 248 respectively and the control unit 140 includes a driving unit 240 including a first driving unit 242 and a second driving unit 244 And the first and second valves 246 and 248 are opened or closed.

The hydraulic pressure supplied to the cylinder body 211 through the inlet 226 is supplied to the first and second hydraulic lines 222 and 224 through the opened first and second valves 246 and 248, As the number of open valves in the two valves 246 and 248 increases, the hydraulic pressure applied to the cylinder becomes larger.

The protective sealing member 202 may be made of various resins having properties such that they are filled in a fluid state, cured after being filled, and made of, for example, an epoxy resin. Particularly, the epoxy is preferably a colored epoxy because it improves the appearance.

The antenna 204 is preferably composed of a front directional antenna that radiates radio waves in a specific plane direction. However, when the antenna 204 is directed toward the direct room, the radiated waves are inefficiently transmitted.

The control unit 140 controls the first and second valves 246 and 248 to open or close the first and second valves 246 and 248 through the driving unit 240 to move the cylinder rod 210 to move the antenna 204 up and down, And the antenna 204 is installed in a state in which the antenna 204 is tilted obliquely by rotating forward and backward and left and right by a rotary member 206 connected to the motor 136.

Thus, the antenna 204 allows the radio wave to be radiated toward the radio wave receiving portion.

The sensing device 130 is a component installed along a wall surface or a space inside the manhole body 101 to detect the internal state of the manhole body 101. Specifically, the sensing device 130 includes a bottom surface water leakage sensing part 131, an intermediate layer water leakage sensing part 132, a gas sensing part 133, a lid opening / closing sensing part 134, and a control board 135. .

The bottom surface water leakage detection unit 131 and the intermediate layer water leakage detection unit 132 may be constructed of a water leakage sensor for detecting whether the inner bottom surface of the manhole body 101 and the intermediate layer provided with the piping are leaking, The gas sensing unit 133 is installed at a proper position on the inner wall surface of the manhole body 101 to check and detect the gas inside the manhole.

The lid opening / closing detector 134 is installed in the manhole 102 to detect whether the manhole cover 104 is open or closed. The control unit 140 is connected to the bottom surface water leakage detection unit 131, the middle layer water leakage detection unit 132, the gas detection unit 133 and the lid opening detection unit 134 by electric wires to transmit and receive electric signals .

Next, the processing device 120 is a component for acquiring and storing the detected information through the sensing device 130. [ The control unit 140 controls the antenna driving unit 204a to transmit the sensor information stored in the processing unit 120 to the outside through the antenna 204. [

The embodiments of the present invention described above are not implemented only by the apparatus and / or method, but may be implemented through a program for realizing functions corresponding to the configuration of the embodiment of the present invention, a recording medium on which the program is recorded And such an embodiment can be easily implemented by those skilled in the art from the description of the embodiments described above.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

100: Manhole apparatus 101: Manhole body
102: Manhole hole 103: Manhole hole extension part
104: Manhole cover 110: Anthera mounting hole
111: antenna mounting hole extension part 120: processing device
130: sensing device 131: bottom surface leak detector
132: Middle layer leakage detection unit 133: Gas sensing unit
134: lid opening / closing detection unit 135: control board
136: motor 200: buried antenna device
201: inner hollow portion 202: protective sealing member
204: antenna 204a: antenna driver
205: Support plate 205a:
206: rotating member 210: cylinder rod
220: Hydraulic line 222: First hydraulic line
224: second hydraulic line 226: inlet
228: outflow section 240:
242: first driving section 244: second driving section
246: first valve 248: second valve

Claims (1)

A manhole main body 101 buried underground and having a constant internal space;
A manhole 102 formed through an upper surface of the manhole body 101;
A manhole hole extension part 103 formed upwardly from the manhole hole 102;
A manhole cover 104 which covers the upper surface of the manhole-hole extending portion 103 and hermetically closes and is installed at the same height as the ground surface;
An antenna mounting hole 110 formed to have a size smaller than the manhole hole 102 and penetrating the upper surface of the manhole body 101 on the other side where the manhole hole 102 is formed;
An antenna mounting hole extension part 111 extending upward from the antenna mounting hole 110;
The bottom surface water leakage detection unit 131 and the middle layer water leakage detection unit 132 detect whether or not the inner bottom surface of the manhole body 101 and the intermediate layer provided with the piping are leaking, The lid opening / closing detection unit 134 detects whether the manhole cover 104 is opened or closed by installing the manhole cover 102 in the manhole opening 102, A sensing device 130 for sensing the internal state of the manhole body 101 along a wall surface or a space inside the manhole body 101;
A processing device (120) for acquiring and storing the detected information through the sensing device (130);
The antenna 120 is installed at an inner hollow portion 201 formed at an upper portion of the antenna mount hole extension portion 111 and is installed at a height corresponding to the ground surface on the upper surface of the antenna mount hole extension portion 111, (200) for transmitting / receiving information to / from the outside; And
And a protective sealing member (202) filled in the fluid state, filled and cured, and closing the upper surface of the flush antenna device (200)
The buried antenna device 200 is installed on the upper surface of the antenna mount hole extension 111 at a height corresponding to the ground surface. The antenna 204 is installed in the inner hollow portion 201, An elastic plate 205a formed at a lower portion of the support plate 205 and a support plate 205b formed at a lower portion of the elastic plate 205a to support the support plate 205 and the elastic plate 205a And a cylinder rod 210 coupled to a lower portion of the rotary member 206 and capable of moving up and down,
The cylinder rod 210 includes a cylinder body 211 penetrating through the cylinder rod 210 in a direction perpendicular to the cylinder rod 210 and a first hydraulic line 222 and a hydraulic line 220 of the second hydraulic line 224. The cylinder body 211 is formed with an inlet 226 through which hydraulic pressure flows and an outlet 228 through which hydraulic pressure flows out The first and second hydraulic lines 222 and 224 are provided with first and second valves 246 and 248 respectively and a first drive unit 242 for driving the first and second valves 246 and 248, The first and second valves 246 and 248 are controlled to be opened or closed through the driving unit 240 so that the cylinder rod 210 is moved And the antenna 204 is moved up and down so that the radio wave of the antenna 204 is accurately emitted toward the radio wave receiving unit, (140) for controlling the antenna (204) to be installed in a state in which the antenna (204) is tilted obliquely by rotating forward and backward and left and right by the rotating member (206) connected to the motor ≪ / RTI &
The inner hollow portion 201 formed on the upper portion of the antenna mount hole extension portion 111 is formed as an empty space from the upper surface of the antenna mount hole extension portion 111 to the lower surface of the protective seal member 202, The antenna 204 is positioned in the upper region and the cylinder rod 210 and the cylinder body 210 are located in the lower region, 211,
The antenna mounting hole extension part 111 is provided on the upper surface of the cylinder body 211 and has a through hole penetrating in a vertical direction to one side of the center part, And a rotating roller 230 including a first rotating roller 232 and a second rotating roller 234 for guiding the first rotating roller 232 and the second rotating roller 234 when the first and second rotating rollers 210 and 210 move in the vertical direction, Providing space for
The control unit 140 is connected to the bottom surface leakage detection unit 131, the middle layer leakage detection unit 132, the gas detection unit 133, and the lid opening / closing detection unit 134 by electric wires to transmit / Sensor information of the bottom surface water leakage detection unit 131, the intermediate layer water leakage detection unit 132, the gas detection unit 133 and the lid opening / closing detection unit 134 stored in the processing unit 120, (204a) and transmits the control signal to the outside via the antenna (204).
KR1020160035436A 2016-03-24 2016-03-24 Manhole Apparatus of Water Supply with Safety Function KR101661513B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200067463A (en) * 2018-12-04 2020-06-12 (주)미래텍 Simple water supply system with water level control function of water tank and integrated water management system
KR102562794B1 (en) 2022-12-06 2023-08-03 (주)재이시스템 Top plate of manhole safety management device
KR102567025B1 (en) 2022-12-06 2023-08-16 (주)재이시스템 Manhole safety management device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100545911B1 (en) 2002-12-23 2006-01-24 주식회사 케이티 Manhole condition monitoring system
JP2011221783A (en) * 2010-04-09 2011-11-04 Hitachi Information & Communication Engineering Ltd System and method of reading and writing buried object management information
KR101159106B1 (en) * 2009-09-22 2012-06-22 부영산전주식회사 Water-proof manhole with supervisory equipment
KR101553047B1 (en) * 2015-02-23 2015-09-16 김영 Special purpose vehicle having automatic horizontal controlling apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100545911B1 (en) 2002-12-23 2006-01-24 주식회사 케이티 Manhole condition monitoring system
KR101159106B1 (en) * 2009-09-22 2012-06-22 부영산전주식회사 Water-proof manhole with supervisory equipment
JP2011221783A (en) * 2010-04-09 2011-11-04 Hitachi Information & Communication Engineering Ltd System and method of reading and writing buried object management information
KR101553047B1 (en) * 2015-02-23 2015-09-16 김영 Special purpose vehicle having automatic horizontal controlling apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200067463A (en) * 2018-12-04 2020-06-12 (주)미래텍 Simple water supply system with water level control function of water tank and integrated water management system
KR102136801B1 (en) * 2018-12-04 2020-07-23 (주)미래텍 Simple water supply system with water level control function of water tank and integrated water management system
KR102562794B1 (en) 2022-12-06 2023-08-03 (주)재이시스템 Top plate of manhole safety management device
KR102567025B1 (en) 2022-12-06 2023-08-16 (주)재이시스템 Manhole safety management device

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