KR101718308B1 - System for monitoring pylon inner deterioration of cable bridge having reed switch-based lighting lamp for imaging acquisition, and method for the same - Google Patents

Abstract

The present invention relates to a system to monitor a pylon inner deterioration of a cable bridge having a reed switch-based lighting lamp for an imaging acquisition; and a method thereof. According to the present invention, an inspection on a pylon inner deterioration of a cable bridge is able to smoothly be performed by providing only a lighting in case of an imaging acquisition device getting close to a lighting lamp using a reed switch-based lighting lamp when the imaging acquisition device is used to film an inner of the pylon to monitor the pylon inner deterioration of a cable bridge such as a cable-stayed bridge or a suspension bridge. In addition, the lighting lamp is turned on only when a magnet installed in the imaging acquisition device gets close to the reed switch installed in the lighting lamp to provide only a lighting in a required portion; thereby providing the system the system to monitor a pylon inner deterioration of a cable bridge having a reed switch-based lighting lamp for the imaging acquisition and method thereof, capable of preventing unnecessary electric consumption.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a system and method for monitoring internal damage of a cable-stayed bridge having an illumination lamp based on a reed switch for image capturing,

More particularly, the present invention relates to a system for monitoring damages inside a pylon of a cable bridge such as a cable-stayed bridge or a suspension bridge, And more particularly, to a system and method for monitoring damage inside a pylon of a cable bridge that provides illumination to a video imaging device using a reed switch based illumination lamp.

Cable-stayed bridges such as cable-stayed bridges or suspension bridges are bridge types suitable for terrains where it is difficult to install bridges such as deep valleys and straits and wide rivers. At this time, a cable, fixed to the pylon, So that the length of the span can be lengthened.

Fig. 1 shows a cable-stayed bridge and a suspension bridge. Fig. 2 shows a structure of a general pylon. Fig. 1 (a) shows a cable-stayed bridge 10, .

As shown in Figs. 1 (a) and 1 (b), the main structural members constituting such a cable-stayed bridge 10 or the suspension bridge 20 are formed by supporting the bases 11, 21 and the cables 14, It can be divided into main towers 12 and 22, piers, girders and cables 14 and 24 for supporting a vertical load, and girders 13 and 23.

2 (a) and 2 (b), the upper part of the main tower 12 is formed by vertically stacking a plurality of steel blocks, and a concrete wall is placed on the outer surface thereof. A cable 14 is fixed to both sides of the steel block, and a lower end of the cable 14 is connected to a girder, a slab, and the like.

Generally, cable bridges such as cable-stayed bridges 10 or suspension bridges 20 are relatively flexible because they have a longer span than other types of bridges, so they behave sensitively to all loads applied. Therefore, it requires higher precision than other bridges during design and construction. In particular, the construction of the main towers 12 and 22 is difficult to integrally construct all the main towers 12 and 22 due to its size and structure. Generally, the main towers 12 and 22 are constructed stepwise in units and blocks.

At this time, most of the bridges such as cable-stayed bridges to which the main tower 12 is applied are installed in an environment where the accessibility to the site is very difficult as in the middle of the sea. In addition, the method of inspecting the interior of the pylons of such cable bridges is only a level of human inspection and visual inspection.

In this way, when the interior of the pylon of a cable bridge is visually inspected, there is a problem that it is very dangerous for a person to always approach the inside of the pylon. In addition, visual inspection inside the pylon is not easy in hot summer days.

Especially, since the pillar towers 12 and 22, which are installed at both ends of the cable-stayed bridge or the suspension bridge, are so high as to have a height of usually 60 to 70 m, the manager can ascend and descend using a ladder or the like, This is a very dangerous task for safety before improving the efficiency of the work.

On the other hand, as a prior art for solving the above-mentioned problem, Korean Utility Model No. 20-148505 discloses an invention entitled "Bridge Inspection Lift Device ", which will be described with reference to FIG.

3 is a side view showing a bridge check elevating apparatus according to a conventional technique.

3, the conventional bridge ascending / descending apparatus for checking a bridge 30 is an elevating apparatus for elevating and lowering a worker to conveniently maintain a large main tower 12 of a bridge, Wire rope fastened to the top; A pair of auxiliary wire ropes fixed up and down on both sides of the wire rope; A pair of rails (40) vertically attached to the bottom side inside the main tower (12); A cage 31 for elevating or lifting the operator or the cargo inside the main tower 12; A reel 33 to which the other end of the wire rope is fixed and wound; A driving device 32 for driving the reel 33 to elevate the cage 31; An emergency stopper mounted on the cage 31 and coupled to the auxiliary wire rope to fix the cage 31 in its current position when an emergency situation such as a failure of the drive device 32 occurs; A pair of auxiliary pulleys 41 mounted on both sides of the cage 31 and coupled to the rails 40 to prevent the cage 31 from moving up and down; An upper limit sensor installed at a predetermined position above the main tower 12 to limit the elevation height of the cage 31 when the cage 31 rises, A lower limit sensor installed at a predetermined lower portion of the main tower 12 to stop the driving device 32 by restricting a descent height when the cage 31 descends; And an operating switch that can control the elevating and lowering by controlling the driving device 32 for elevating and lowering the cage 31.

According to the elevating apparatus for checking a bridge according to the related art, when a worker or a freight is lifted and lowered safely in order to maintain the main tower of a bridge in which the load of the bridge is supported by a large main tower like a cable-stayed bridge, Can be performed.

However, even in the case of the elevator for checking the bridge according to the conventional technique, the elevator which is a landing gear must be ridden and the inside of the main tower of the cable bridge must be visually inspected.

As described above, the method of monitoring the damage inside the pylon of cable bridges such as cable-stayed bridges or suspension bridges is merely a level of carrying out visual inspection on the elevator, and development of a system for monitoring damage inside the pylon of cable bridges Is required.

Registered Utility Model No. 20-148505 (filed on June 11, 1997), Name of design: "Bridge elevator" Korean Patent No. 10-779766 filed on July 11, 2006, entitled "Method of Construction of Bridge Tower" Korean Registered Patent No. 10-1484853 filed on Aug. 19, 2013, entitled "Small LED Lamp Using a Magnet" Korean Patent No. 10-1291932 filed on November 15, 2011, entitled "CCTV camera with variable auxiliary light source" Korean Patent No. 10-1238220 filed on Mar. 10, 2011, entitled "Crack Monitoring System" Korean Patent No. 10-1097119 filed on July 20, 2009, entitled "Method for inspecting the inner surface of a tunnel of a vision sensor system & Korean Registered Patent No. 10-1047527 filed on Aug. 24, 2009, entitled "Portable Formwork Device for Main Tower Construction with Remote Automatic Control Function for Management of Verticality of Concrete Pylon of Bridge & Concrete pylon construction method of bridge " Korean Patent No. 10-935012 filed on November 25, 2008, entitled "Monitoring Apparatus and Control Method Therefor" Japanese Patent No. 4,709,554 filed on January 7, 2005, entitled "Main Tower of Bridge & Bridge with it" Japanese Patent Laid-Open Publication No. 2013-206628 (published on October 7, 2013), entitled "Reed switch"

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a reed switch for detecting a damage in a pylon of a cable bridge such as a cable-stayed bridge or a suspension bridge, The present invention relates to an internal damage monitoring system for a cable bridge having a reed switch-based illumination lamp for image capturing and capable of providing illumination only when the image capturing apparatus is in proximity to an illumination lamp using an illumination lamp based on a Reed Switch Method.

It is another object of the present invention to provide an image pickup apparatus capable of preventing unnecessary power consumption by providing illumination only when a lighting lamp is turned on only when a magnet mounted on a video photographing apparatus is close to a reed switch installed in an illumination lamp, The present invention relates to a system for monitoring internal damage of a cable bridge and a method thereof,

In order to achieve the above object, according to the present invention, there is provided a system for monitoring internal damage of a main bridge of a cable bridge having an illumination lamp based on a reed switch for capturing an image, A system for photographing a wall surface inside a main tower while moving up and down inside the main tower so as to monitor damages inside the main tower of the cable bridge; A magnet fixed to one side of the image photographing apparatus moving up and down; A plurality of illumination lamps installed at predetermined intervals inside the main tower and providing illumination to the image capturing apparatus inside the main tower; And a plurality of illumination lamps, respectively. The magnets provided in the up and down moving image photographing apparatus are close to each other and contact points are connected to turn on the illumination lamps. When the magnets are moved away from each other, Wherein the illumination lamp maintains the turn-off state and is turned on when the image capturing apparatus is within a predetermined range to provide illumination to the image capturing apparatus.

Here, the reed switch includes: a glass tube sealed with an inert gas for stable switch operation; Two magnetic-substance leads sealed in the glass tube and usually kept open by the elasticity of the spring; And a contact portion disposed so as to have a predetermined contact gap and a superposition gap by the two magnetic body leads so that the two magnetic body leads contact each other when the magnet approaches and forms a magnetic field.

Here, the power supply apparatus may further include a power supply for supplying power to the illumination lamp, and the power supply apparatus may supply power so that the illumination lamp can be switched on only when the contact of the reed switch is in contact.

The main tower of the cable bridge is installed in a hollow square or circular shape, and an elevator for checking a bridge can be installed inside the main tower. The image capturing apparatus is installed in the lower part of the elevator, As shown in FIG.

Here, the main tower of the cable bridge is provided with a rail for moving the image photographing apparatus on the inner wall surface, and the image photographing apparatus can move up and down along the rail.

The damage monitoring unit may further include a damage monitoring unit for analyzing an image captured by the image capturing apparatus to monitor damage inside the main tower, An image collecting unit for collecting images; An image processing unit for processing data of the main tower internal image collected by the image collecting unit; An image storage unit for storing reference data for the interior of the main tower and the internal images of the main tower collected by the image collection unit; An image analyzer for comparing and analyzing the reference data stored in the image storage unit and the internal image of the main tower processed by the image processing unit; And a damage determination unit for determining whether the inside of the main tower is damaged according to a result analyzed by the image analysis unit.

In another aspect of the present invention, there is provided a method for monitoring internal damage of a cable bridge of a cable bridge having an illumination lamp based on a reed switch for capturing an image of a cable bridge according to the present invention, The method comprising the steps of: a) driving a video imaging device installed in a pylon of a cable bridge in a vertical direction; b) bringing the magnet mounted on the image photographing apparatus close to a reed switch installed in the illumination lamp; c) switching the illumination lamp to turn on while the contact of the reed switch is in contact; d) photographing the inside of the main tower by the image photographing apparatus according to the illumination provided by the turned on illumination lamp; e) a magnet mounted on the image photographing apparatus moves away from a reed switch installed in the illumination lamp after completion of photographing in the main tower; f) switching the illumination lamp to turn off as the contact of the reed switch drops; And g) monitoring the damage inside the main tower by analyzing the image taken by the image photographing apparatus, wherein the illumination lamp of the step c) maintains the turn off state, And is turned on to provide illumination to the image photographing apparatus.

According to the present invention, when the inside of the main tower is photographed by using a video photographing apparatus to monitor damage inside the main tower of a cable bridge such as a cable-stayed bridge or a suspension bridge, only when the video photographing apparatus is close to the light using the reed switch- By providing illumination, it is possible to check inside the pylon of the cable bridge smoothly.

According to the present invention, unnecessary power consumption can be prevented by only turning on the illumination lamps and providing only the necessary parts when the magnet mounted on the image pickup device is close to the reed switch installed in the illumination lamps.

1 is a view showing a cable-stayed bridge and a suspension bridge which are general cable bridges.
2 is a view showing the structure of a general tower.
3 is a side view showing a bridge check elevating apparatus according to a conventional technique.
FIG. 4 is a schematic view for explaining a system for monitoring damage to a main tower of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention.
5 is a configuration diagram of a main tower internal damage monitoring system for a cable bridge having an illumination lamp based on a reed switch for image capturing according to an embodiment of the present invention.
6 is a diagram specifically illustrating a reed switch in a main tower internal damage monitoring system of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention.
7 is a diagram illustrating a turn-on and turn-off operation of an illumination lamp by a reed switch in a main tower internal damage monitoring system of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention.
FIG. 8 is a diagram illustrating a photographing operation of a photographing apparatus installed in a lower portion of an elevator in a main tower internal damage monitoring system of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention.
FIG. 9 is a view illustrating the photographing of the inside of a main tower of a cable bridge with a reed switch-based illumination light for capturing an image according to an embodiment of the present invention while the image capturing apparatus moves along a rail in a main tower internal damage monitoring system.
10 is a flowchart illustrating a method of monitoring internal damage of a main cable of a cable bridge having an illumination lamp based on a reed switch for image capturing according to an exemplary embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. 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.

[Cable bridge internal tower damage monitoring system (100)]

FIG. 4 is a schematic view for explaining a system for monitoring internal damage of a main tower of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention. FIG. FIG. 1 is a block diagram of a main tower internal damage monitoring system of a cable bridge having a reed switch-based illumination lamp for the system of FIG.

Referring to FIGS. 4 and 5, a main tower internal damage monitoring system 100 of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention includes a cable bridge 200 as a cable-stayed bridge or a suspension bridge A system for monitoring damage inside the main tower 210 includes a video imaging device 110, a magnet 120, a light 130, a reed switch 140, a power supply 150, 160).

The image capturing apparatus 110 captures the wall surface inside the main tower 210 while moving upward and downward within the main tower 210 to monitor damages inside the main tower 210 of the cable bridge 200. For example, The photographing apparatus 110 may be a CCTV camera, but is not limited thereto.

For example, the image capturing apparatus 110 can be mounted on the lower part of the elevator 230 in the main tower 210 to move up and down, or the rail 240 can be installed in the main tower 210, The image photographing apparatus 110 may be driven by a predetermined driving device to move up and down along the rail 240. Thereafter, the image capturing apparatus 110 is automatically moved in accordance with a predetermined inspection period so that the inside of the main tower can be photographed. At this time, the image captured by the image capturing apparatus 110 is automatically subjected to image processing, Monitor, and create a damage map for the inside of the pylon and provide it to the manager.

Since it is unnecessary to keep the illumination lamp 130 turned on at this time, the power consumption of the image capturing apparatus 110 (i.e., It is preferable that only the illumination lamp 130 of the corresponding part is turned on.

The magnet 120 is fixed to one side of the image capturing apparatus 110 moving up and down.

 A plurality of illumination lamps 130 are installed at predetermined intervals in the main tower 210 and provide illumination to the image capturing apparatus 110 within the main tower 210. Here, the illumination lamp 130 maintains the turn-off state and is turned on when the image capturing apparatus 110 is within a predetermined range to provide illumination to the image capturing apparatus 110.

The reed switch 140 is installed on one side of the plurality of illumination lamps 130. A contact point is connected to the reed switch 140 as the magnets 120 installed in the image capturing apparatus 110 moving close to the reed switch 140 approach, Turns on the illumination lamp 130 and turns off the illumination lamp 130 as the contact point drops as the magnet moves away.

As shown in FIG. 4, a main pillar damage monitoring system 100 for a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention includes a cable-stayed bridge or a suspension bridge having a cable 220, It is possible to prevent unnecessary power consumption or to easily capture images without using an unnecessary complicated sensor system when internal damage is monitored using a camera as the image capturing apparatus 110 inside the main tower 210 of the same cable bridge 200. [ And a reed switch 140 that can control the turn on / turn off of the light 130 whenever the device 110 passes. That is, by providing the reed switch 140 in the illuminating lamp 130 nearest to the image photographing apparatus 110, the illuminating lamp 130 is turned on every time the image photographing apparatus 110 passes, Can be provided.

At this time, the illumination switch 130 is switched on every time the image capturing apparatus 110 passes by using the reed switch 140, and after the image capturing apparatus 110 has passed, So that it is possible to economically and efficiently implement a damage monitoring system for a pillar of a cable bridge.

4, when the image photographing apparatus 110 passes over from top to bottom, that is, when the magnet 120 mounted on the lower end of the image photographing apparatus 110 passes, The illumination lamp 130 is turned on by mutual reaction with the reed switch 140 mounted on the lamp unit 130. Thereafter, when the image photographing apparatus 110 passes the lower end of the reed switch 140, the magnets 120 are moved away from the reed switch 1340, and the lamp 130 is turned off. Here, since the approach distance between the reed switch 140 and the magnet 120 for turning on the illumination lamp may vary depending on the magnitude of the magnetic force of the magnet 120, it is preferable to use the magnet 120 having a large magnetic force Do.

As shown in FIG. 5, the power supply device 150 supplies power to the illumination lamp 130, and it is preferable to use battery power, but the present invention is not limited thereto.

The damage monitoring unit 160 analyzes the image photographed by the image photographing apparatus 110 to monitor damage inside the main tower 210, as shown in FIG. The damage monitoring unit 160 may include an image collecting unit 161, an image processing unit 162, an image storing unit 163, an image analyzing unit 164, and a damage determining unit 165, But is not limited thereto.

The image collecting unit 161 collects the internal images of the main tower 210 captured by the image capturing apparatus 110 and the image processing unit 162 analyzes the internal images of the main tower 210 collected by the image collecting unit 161 And processes the image data. At this time, the image analysis technique by the image processing technique may be applied to the current application technique, so a detailed description thereof will be omitted.

The image storage unit 163 stores reference data for the interior of the main tower 210 and the internal images of the main tower 210 collected by the image collection unit 161. [

The image analysis unit 164 compares the reference data stored in the image storage unit 163 with the internal image of the main tower 210 processed by the image processing unit 162. The damage determination unit 165 determines And determines whether the inside of the main tower 210 is damaged according to the result of the analysis at the unit 164.

FIG. 6 is a view illustrating a reed switch in a main tower internal damage monitoring system of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention. FIG. FIG. 2 is a diagram illustrating the turn-on and turn-off operations of a lighting lamp by a reed switch in a main tower internal damage monitoring system of a cable bridge having an illumination lamp based on a reed switch for image capturing.

6, the reed switch 140 in the main tower internal damage monitoring system of a cable bridge having an illumination lamp based on a reed switch for capturing an image according to an exemplary embodiment of the present invention includes a glass tube 141; A magnetic body lead 142; And a contact portion 143.

The inert gas (inert gas) is sealed in the glass tube 141 for stable switching operation.

The two magnetic substance leads 142 are sealed in the glass tube 141 and are normally kept in an Off state by the elasticity of the spring.

The contact points 143 are formed such that when the magnets 120 approach and form a magnetic field, the two magnetic substance leads 142 contact the contact gaps and the overlapping intervals (Overlap).

When the magnets 120 mounted on the image capturing apparatus 110 are moved closer to each other, a magnetic circuit is formed through the two magnetic substance leads 142. The two magnetic substance leads 142 are attracted to each other, Is turned on. Then, the two magnetic material leads 142 return to the original open state due to elasticity when the magnet 120 is moved away. At this time, the contact portion 143 of the reed switch 140 is made of gold or the like, and an inert gas is sealed in the glass tube 141 to perform a stable operation.

That is, the reed switch 140 is a switch that opens and closes a contact by the current of a magnet or a coil by sealing the metal magnetic body lead 142 in the glass tube 141, and is known to be compact and highly reliable.

7A, when the magnet 120 is spaced apart from the reed switch 140 by a predetermined distance or more, the contact of the reed switch 140 is separated, The power supplied from the device 150 to the illumination lamp 130 is cut off. Here, the power supply 150 may use battery power.

7B, when the magnet 120 approaches the reed switch 140 within a predetermined distance, the contacts of the reed switch 140 are brought into contact with each other, Power can be supplied from the apparatus 150 to the illumination lamp 130 so that the illumination lamp 130 can be turned on to provide illumination to the imaging apparatus 110. [

Meanwhile, FIG. 8 is a diagram illustrating the photographing of the inside of the main tower by the image capturing device installed in the lower part of the elevator in the internal damage monitoring system of the main tower of the cable bridge having the reed switch-based illumination lamp for image capturing according to the embodiment of the present invention to be.

Referring to FIG. 8, in a main tower internal damage monitoring system 100 of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention, a main tower 210 of the cable bridge 200 includes: But may be constructed in a square or circular shape with a hollow, as shown in FIG. 8 a), but is not limited thereto. As shown in FIG. 8B, an elevator 230 for checking the bridge may be installed in the main tower 210. 8A shows that the magnet 120 mounted on the image photographing apparatus 110 does not approach the vicinity of the reed switch 140 installed in the illumination lamp 130 so that the illumination lamp 130 is turned off 8 (b), the image capturing apparatus 110 is installed at a lower portion of the elevator 230 and moves up and down corresponding to the elevation of the elevator 230 The illumination lamp 130 can be switched to the on state by approaching the magnet 120 mounted on the image capturing apparatus 110 to the vicinity of the reed switch 140 installed in the illumination lamp 130. [

Meanwhile, FIG. 9 is a view illustrating a photographing of the inside of a main tower of a cable bridge with a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention, to be.

Referring to FIG. 9, in a main tower internal damage monitoring system 100 of a cable bridge having a reed switch-based illumination lamp for image capturing according to an exemplary embodiment of the present invention, The image photographing apparatus 110 is driven by a predetermined driving device and can be moved up and down along the rail 240 to move the image photographing apparatus 110 The illumination lamp 130 can be switched to the on state by approaching the magnet 120 mounted on the illumination lamp 130 to the vicinity of the reed switch 140 installed in the illumination lamp 130.

As a result, in the case of a main pillar damage monitoring system 100 of a cable bridge having a reed switch-based illumination lamp for image capturing according to an embodiment of the present invention, in order to monitor the damage inside the pylon of a cable bridge such as a cable- When the interior of the main tower is photographed by using the image capturing apparatus, illumination can be provided only when the image capturing apparatus is close to the illumination lamp using a reed switch-based illumination light, so that the inside of the main tower of the cable bridge can be checked smoothly. The illumination lamp is turned on only by providing the illumination of the necessary part only when the magnet mounted on the illumination lamp is close to the reed switch installed in the illumination lamp, so that unnecessary power consumption can be prevented.

[How to monitor internal damage of main tower of cable bridge]

10 is a flowchart illustrating a method of monitoring internal damage of a main cable of a cable bridge having an illumination lamp based on a reed switch for image capturing according to an exemplary embodiment of the present invention.

Referring to FIG. 10, a method for monitoring internal damage of a cable bridge with a reed switch-based illumination lamp for capturing an image according to an embodiment of the present invention includes the steps of: As a method of monitoring the damage, first, the image capturing apparatus 110 installed in the main tower 210 of the cable bridge 200 is driven up and down (S110). The main tower 210 of the cable bridge 200 is installed in a hollow or circular shape and an elevator 230 for checking a bridge is installed in the main tower 210, (110) is installed at a lower portion of the elevator (230) and can move up and down corresponding to the elevation and descent of the elevator (230). The main tower 210 of the cable bridge 200 is provided with a rail 240 for moving the image capturing apparatus 110 on its inner wall surface and the image capturing apparatus 110 is installed along the rail 240 You can also move up and down.

Next, the magnet 120 mounted on the image capturing apparatus 110 is brought close to the reed switch 140 installed in the illumination lamp 130 (S120).

Next, the illumination lamp 130 is turned on (S130) while the contact of the reed switch 140 is contacted. At this time, the illumination lamp 130 maintains the turn-off state and is turned on when the image capturing apparatus 110 is within a predetermined range to provide illumination to the image capturing apparatus 110. Here, the reed switch 140 includes a glass tube 141 sealed with an inert gas for stable switching operation; Two magnetic material leads 142 sealed in the glass tube 141 and usually kept open by the elasticity of the spring; And a contact portion 143 disposed to have a predetermined contact distance and an overlapping distance by the two magnetic body leads 142 so that the two magnetic body leads 142 come into contact with each other when the magnet 120 approaches and forms a magnetic field, The power supply unit 150 supplies power so that the illumination lamp 130 can be turned on only when the contact of the reed switch 140 is in contact.

Next, the image capturing apparatus 110 captures the interior of the main tower 210 according to the illumination provided by the turned-on illumination lamp 130 (S140).

Next, after the inside of the main tower 210 has been photographed, the magnet 120 mounted on the image capturing apparatus 110 is moved away from the reed switch 140 installed in the illumination lamp 130 (S150).

Next, the contact of the reed switch 140 is dropped, and the illumination lamp 130 is turned off (S160).

Next, the image photographed by the image photographing apparatus 110 is analyzed to monitor the damage inside the main tower 210 (S170). Here, at this time, the current screening technique using the image processing technique using the image processing technique can be used.

As a result, according to the embodiment of the present invention, when the inside of the main tower is photographed by using the image photographing device to monitor damage inside the main tower of a cable bridge such as a cable-stayed bridge or a suspension bridge, The lighting can be turned on only when the magnet mounted on the image taking apparatus is close to the reed switch installed in the illumination lamp, Unnecessary power consumption can be prevented.

Meanwhile, it is apparent to those skilled in the art that the main tower internal damage monitoring system of a cable bridge according to the present invention is provided with a reed switch-based illumination lamp, but a contactless proximity switch and the like can be used instead of the reed switch.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Internal damage monitoring system
110: Video shooting device (camera)
120: Magnet
130: lighting light
140: Reed switch
141: Glass tube
142: Magnetic body lead
143:
150: Power supply
160: Damage monitoring unit
161:
162:
163:
164: image analysis section
165:
200: Cable Bridge (Cable Stayed Bridge or Suspension Bridge)
210: Pylon
220: Cable
230: Elevator
240: rail

Claims (12)

CLAIMS 1. A system for monitoring damages inside a pylon (210) of a cable bridge (200) that is a cable-stayed bridge or a suspension bridge,
An image photographing apparatus 110 for photographing a wall surface inside the main tower 210 while moving up and down inside the main tower 210 to monitor damages inside the main tower 210 of the cable bridge 200;
A magnet 120 fixed to one side of the image capturing apparatus 110 moving up and down;
A plurality of illumination lights 130 installed at predetermined intervals inside the main tower 210 and providing illumination to the image capturing apparatus 110 inside the main tower 210; And
As the magnets 120 installed in the image capturing apparatus 110 moving up and down move closer to each other, the contacts are connected to turn on the illumination lamp 130, And a reed switch 140 for turning off the illumination lamp 130 while the contact point drops as the magnet moves away from the reed switch 140,
Wherein the illumination lamp (130) maintains the turn-off state and is turned on when the image capturing apparatus (110) is within a predetermined range to provide illumination to the image capturing apparatus (110) Internal Damage Monitoring System for Main Bridge of Cable Bridges with Switch - based Illumination. The apparatus of claim 1, wherein the reed switch (140)
Glass tube (141) sealed with an inert gas for stable switch operation;
Two magnetic material leads 142 sealed in the glass tube 141 and usually kept open by the elasticity of the spring; And
When the magnet 120 approaches and forms a magnetic field, the two magnetic material leads 142 are contacted by the two magnetic material leads 142 so as to have a predetermined contact gap and an overlap distance. The contact portion 143,
For monitoring the internal damage of a pylon of a cable bridge with a reed switch-based illumination lamp for imaging. 3. The method of claim 2,
The power supply 150 may further include a power supply 150 for supplying power to the lamp 130. The power supply 150 may be connected to the lamp 130 only when the contact of the reed switch 140 is in contact, And the power is supplied so that the power can be switched to the turn-on state of the cable bridge based on the reed switch. The method according to claim 1,
Wherein the main tower (210) of the cable bridge (200) is installed in a hollow square or circular shape, and an elevator (230) for checking a bridge is installed inside the main tower (210) The internal damage monitoring system of a pylon of a cable bridge with a reed switch - based light fixture. 5. The method of claim 4,
The elevator 230 is installed at a lower portion of the elevator 230 and moves upward and downward according to the elevation of the elevator 230. [ Internal tower damage monitoring system. The method according to claim 1,
The main tower 210 of the cable bridge 200 is provided with a rail 240 for moving the image capturing apparatus 110 on an inner wall surface thereof, Wherein the cable bridge has a reed switch-based illumination lamp for image capturing. The method according to claim 1,
The damage monitoring unit (160) further includes a damage monitoring unit (160) for analyzing an image taken by the image capturing apparatus (110) to monitor damage inside the main tower (210)
An image capturing unit 161 for capturing an internal image of the main tower 210 captured by the image capturing apparatus 110;
An image processor 162 for processing the internal image of the main tower 210 collected by the image collector 161;
An image storage unit 163 for storing reference data for the interior of the main tower 210 and the internal images of the main tower 210 collected by the image collection unit 161;
An image analysis unit 164 for comparing and analyzing the reference data stored in the image storage unit 163 and the internal image of the main tower 210 processed by the image processing unit 162; And
A damage determination unit 165 for determining whether the interior of the main tower 210 is damaged according to a result of the analysis performed by the image analysis unit 164,
For monitoring the internal damage of a pylon of a cable bridge with a reed switch-based illumination lamp for imaging. A method of monitoring damages inside a pylon (210) of a cable bridge (200) that is a cable-stayed bridge or a suspension bridge,
a) driving the image capturing apparatus 110 installed in the main tower 210 of the cable bridge 200 in a vertical direction;
b) bringing the magnet (120) mounted on the image photographing apparatus (110) close to the reed switch (140) installed in the illumination lamp (130);
c) switching the illumination lamp 130 to turn on while the contact of the reed switch 140 is in contact;
d) photographing the inside of the main tower (210) by the image photographing apparatus (110) according to the illumination provided by the turned on illumination lamp (130);
e) moving the magnet 120 mounted on the image photographing apparatus 110 away from the reed switch 140 installed in the illumination lamp 130 after completion of photographing in the main tower 210;
f) switching the illumination lamp (130) to turn off as the contact of the reed switch (140) drops; And
g) analyzing the image photographed by the image photographing apparatus 110 and monitoring damage inside the main tower 210
, ≪ / RTI &
Wherein the illumination lamp 130 of the step c) is turned on to provide illumination to the image capturing apparatus 110 when the image capturing apparatus 110 is in a predetermined range while being turned off, A method for monitoring the internal damage of a pylon of a cable bridge with a reed switch - based light fixture for imaging. The method as claimed in claim 8, wherein the reed switch (140)
A glass tube 141 sealed with an inert gas for stable switch operation;
Two magnetic material leads 142 sealed in the glass tube 141 and usually kept open by the elasticity of the spring; And
When the magnet 120 approaches and forms a magnetic field, the contact portion 143 is disposed so as to have a predetermined contact distance and an overlapping distance by the two magnetic body leads 142 so that the two magnetic body leads 142 come into contact with each other.
A method for monitoring internal damage in a pylon of a cable bridge having a reed switch based illumination light for image capture. 10. The method of claim 9,
Wherein the power supply device (150) supplies power so that the illumination lamp (130) can be switched on only when the contact of the reed switch (140) is in contact with the reed switch A method for monitoring internal damage in a pylon of cable bridges with a base light. 9. The method of claim 8,
The main tower 210 of the cable bridge 200 is installed in a hollow square or circular shape and an elevator 230 for checking a bridge is installed in the main tower 210, ) Is installed at a lower portion of the elevator (230) and moves up and down in accordance with the elevation of the elevator (230). The internal bridge damage monitoring method of a cable bridge having a reed switch- . 9. The method of claim 8,
The main tower 210 of the cable bridge 200 is provided with a rail 240 for moving the image capturing apparatus 110 on an inner wall surface thereof, Wherein the cable bridge is provided with a reed switch-based illumination lamp for image capturing.

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