KR20220020023A - Non-destructive inspection device for electric pole - Google Patents

Abstract

The present invention relates to a non-destructive inspection device for an electric pole, which comprises: a magnetic field detection unit closely attached to an outer circumferential surface of an electric pole to detect a magnetic field generated from a steel wire or a transverse rebar buried in the electric pole by using a plurality of magnetic sensor modules arranged in a predetermined pattern; and a breakage detection unit wire connected to the magnetic field detection unit through a wire or wirelessly connected to the magnetic field detection unit to detect whether the steel wire or the transverse rebar is broken based on magnetic field data received from the plurality of magnetic sensor modules. Each magnetic sensor module comprises a first magnetic sensor block and a second magnetic sensor block arranged in a longitudinal direction of the electric pole.

Description

Non-destructive pole inspection equipment {NON-DESTRUCTIVE INSPECTION DEVICE FOR ELECTRIC POLE}

The present invention relates to non-destructive pole inspection equipment, and more particularly, to non-destructive pole inspection equipment capable of inspecting whether or not the reinforcing bar buried inside the electric pole is broken.

In general, most of the supports used in distribution lines are concrete poles, and they are composed of a pre-stressed (PS) concrete structure. Accidents that are conducted without action are occurring.

P.S The concrete structure is designed to support the bending moment with the tensile force of the reinforcing bar, so if the reinforcing bar inside the pole breaks and loses its tensile force, an accident occurs in which the concrete pole collapses. In particular, in the case of Korea, which uses a lot of concrete poles of the corresponding structure, various devices such as communication lines and transformers are installed on the poles, so the risk of secondary accidents is very high due to the breakage of the reinforcing bars inside the concrete. Therefore, it is necessary to diagnose the breakage of reinforcing bars inside concrete and replace or reinforce the poles before a fall accident occurs.

The steel wire installed inside the pole (ie, vertical reinforcing bars) is weakly magnetized by high heat and pressure during the production stage. However, when the steel wire is broken, the strength of the magnetic field is locally increased and the polarity is changed only at the fractured boundary surface. Due to these characteristics, the existing non-destructive inspection apparatus can measure the intensity distribution of the magnetic field in the parallel direction of the steel wire using a magnetic sensor, and check whether the steel wire is broken based on this.

However, since the magnetic field strength of the steel wire is inversely proportional to the square of the distance between the steel wire and the magnetic sensor, maintaining a constant distance between the magnetic sensor and the steel wire is an important factor for accurate measurement. And, if the separation distance between the magnetic sensor and the steel wire is changed during the magnetic field measurement, it may be measured as if the strength of the magnetic field is changed, which may act as an error in checking whether the steel wire is broken. That is, since the magnetic field strength is sensitively changed according to the speed of moving the magnetic sensor from the bottom to the top of the pole and the state of parallelism between the magnetic sensor and the steel wire, these factors may cause measurement errors.

In addition, in the case of a concrete pole, it is installed inside and a spiral reinforcing bar is additionally welded to the steel wire in the transverse direction to support the steel wire. When measuring using the existing non-destructive testing equipment, there is a problem in that it is difficult to distinguish whether the spirally welded reinforcing bar is broken or the internal steel wire is broken. Since it is the steel wire that actually affects the safety of the pole structure, it is necessary to distinguish whether the steel wire or transverse reinforcing bar is broken.

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems. Another object is to provide a non-destructive pole inspection equipment that can detect whether the steel wire buried inside the pole is broken.

Another object is to provide a non-destructive pole inspection equipment that can minimize the measurement error caused by the operator's measurement error.

Another object is to provide a non-destructive pole inspection equipment that can identify a broken target among the steel wire and transverse reinforcing bars buried inside the pole.

According to one aspect of the present invention to achieve the above or other object, the magnetic field generated from the steel wire or transverse reinforcing bar embedded in the electric pole by using a plurality of magnetic sensor modules arranged in a predetermined pattern in close contact with the outer circumferential surface of the electric pole a magnetic field detection unit for detecting and a breakage detecting unit connected to the magnetic field detecting unit by wire or wirelessly to detect whether the steel wire or transverse reinforcing bar is broken based on the magnetic field data received from the plurality of magnetic sensor modules, each magnetic sensor module provides a non-destructive electric pole inspection equipment comprising a first magnetic sensor block and a second magnetic sensor block arranged in the longitudinal direction of the electric pole.

More preferably, each magnetic sensor module includes a housing for accommodating the first and second magnetic sensor blocks, a first rotating member for rotating the first magnetic sensor block, and the second magnetic sensor block. It characterized in that it further comprises a second rotation member for rotating.

More preferably, the first magnetic sensor block includes a first magnetic sensor for measuring the strength and direction of a magnetic field, and the second magnetic sensor block includes a second magnetic sensor for measuring the strength and direction of the magnetic field It is characterized in that it includes.

More preferably, the first and second magnetic sensors are arranged to have the same magnetic field measurement direction as each other through rotation of the first and second magnetic sensor blocks. In addition, the first and second magnetic sensors are characterized in that they are arranged to have a magnetic field measurement direction perpendicular to each other through rotation of the first and second magnetic sensor blocks.

The effect of the non-destructive electric pole inspection equipment according to the embodiments of the present invention will be described as follows.

According to at least one of the embodiments of the present invention, there is an advantage that it is possible to accurately detect whether the steel wire embedded in the electric pole is broken by using a magnetic sensor module including two magnetic sensors arranged in the longitudinal direction of the electric pole.

In addition, according to at least one of the embodiments of the present invention, using a magnetic sensor module including two magnetic sensors arranged in the longitudinal direction of the electric pole to easily identify the broken object among the steel wire and the transverse reinforcing bar embedded in the electric pole There are advantages to being able to

In addition, according to at least one of the embodiments of the present invention, by measuring the magnetic field of the steel wire embedded in the electric pole using a magnetic sensor module including two magnetic sensors arranged in the longitudinal direction of the electric pole, the measurement error of the operator There is an advantage that the measurement error can be minimized.

However, the effects that can be achieved by the non-destructive electric pole inspection equipment according to the embodiments of the present invention are not limited to those mentioned above, and other effects not mentioned are common in the technical field to which the present invention belongs from the description below. It will be clearly understood by those with the knowledge of

1 and 2 are views illustrating an internal structure according to the type of a concrete electric pole used in a wiring line;
Figure 3 is a view showing the magnetic field distribution according to whether the breakage of the steel wire buried in the electric pole;
Figure 4 is a view showing the magnetic field distribution according to whether the breakage of the horizontal reinforcing bar buried in the electric pole;
5 is a view showing the configuration of a non-destructive electric pole inspection equipment according to an embodiment of the present invention;
6 and 7 are views showing the configuration of a magnetic sensor module according to an embodiment of the present invention;
8 is a diagram referenced for explaining a measurement direction of a magnetic sensor according to a direction of a magnetic field;
9 is a view referenced for explaining a method of detecting whether a steel wire is broken using a magnetic sensor module;
10 and 11 are diagrams referenced for explaining a method of identifying a fracture target inside an electric pole using a magnetic sensor module.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components are assigned the same reference numbers regardless of reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. That is, the term 'unit' used in the present invention means a hardware component such as software, FPGA, or ASIC, and 'unit' performs certain roles. However, 'part' is not limited to software or hardware. The 'unit' may be configured to reside on an addressable storage medium or it may be configured to refresh one or more processors. Thus, as an example, 'part' refers to components such as software components, object-oriented software components, class components and task components, processes, functions, properties, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. Functions provided within components and 'units' may be combined into a smaller number of components and 'units' or further divided into additional components and 'units'.

In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

The present invention proposes a non-destructive electric pole inspection equipment that can detect whether the steel wire buried inside the electric pole is broken. In addition, the present invention proposes a non-destructive electric pole inspection equipment that can minimize the measurement error due to the operator's measurement error. In addition, the present invention proposes a non-destructive pole inspection equipment that can identify a broken target among the steel wire and transverse reinforcing bars buried inside the pole.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the drawings.

1 and 2 are diagrams illustrating an internal structure according to the type of a concrete electric pole used for a wiring line.

First, as shown in FIG. 1 , the first type of concrete electric pole 100 used for a wiring line may be composed of a concrete structure 110 and a plurality of steel wires (ie, vertical reinforcing bars 120 ).

The concrete structure 110 forms a body of the concrete pole 100, and may be formed in a cylindrical shape. The concrete structure 110 may be formed of a pre-stressed concrete structure.

The plurality of steel wires 120 may be disposed in the longitudinal direction of the concrete pole 100 to serve to support the concrete pole 100 . The plurality of steel wires 120 may be arranged in a circumferential direction along an inner edge region of the concrete structure 110 .

The plurality of steel wires 120 are in a weakly magnetized state under high heat and pressure in the production stage. Accordingly, it is possible to detect whether the steel wires 120 embedded in the concrete electric pole 100 are broken by measuring the magnetic field change generated in the plurality of steel wires 120 .

Meanwhile, as shown in FIG. 2 , the second type of concrete pole 200 used for the wiring line may be composed of a concrete structure 210 , a plurality of steel wires 220 , and one or more transverse reinforcing bars 230 . there is.

The concrete structure 210 forms the body of the concrete electric pole 200, and may be formed in a cylindrical shape. The concrete structure 210 may be formed of a pre-stressed concrete structure.

The plurality of steel wires 220 may serve to support the concrete electric pole 200 . The plurality of steel wires 220 may be arranged in a circumferential direction along an inner edge region of the concrete structure 210 .

The transverse reinforcing bars 230 are arranged to surround the plurality of steel wires 220 in a spiral shape, and may serve to support the plurality of steel wires 220 . In this case, the transverse reinforcing bar 230 may be combined with the plurality of steel wires 220 through a welding process or the like.

The plurality of steel wires 220 and transverse reinforcing bars 230 are in a weakly magnetized state under high heat and pressure in the production stage. Therefore, by measuring the magnetic field change occurring in the plurality of steel wires 220 and the transverse reinforcing bar 230, it is possible to detect whether the steel wires 220 and the transverse reinforcing bar 230 embedded in the concrete pole 100 are broken. do.

3 is a view showing the magnetic field distribution according to whether the steel wire buried in the electric pole is broken.

As shown in (a) of FIG. 3 , when the steel wire 300 buried in the longitudinal direction on the electric pole is not broken, the magnetic field generated in the steel wire 300 comes out of the N pole and enters the S pole. In this case, the magnetic field is weakest at the midpoint of the steel wire 300 , and the magnetic field increases toward both ends of the steel wire 300 .

On the other hand, as shown in (b) of FIG. 3, when the steel wire 300 embedded in the longitudinal direction on the electric pole is broken, the magnetic pole is divided into an N pole and an S pole around the broken interface. Accordingly, the magnetic force lines are concentrated on the fractured interface of the steel wire 300, and the strength of the magnetic field increases near the fractured boundary, and the strength of the magnetic field decreases as it moves away from the fractured boundary. And, the direction of the magnetic force line changes from the left direction to the right direction as it moves from the lower part to the upper part of the pole around the fractured boundary surface.

4 is a view showing the magnetic field distribution according to whether the transverse reinforcing bar buried in the electric pole is broken.

As shown in (a) of Figure 4, when the transverse reinforcing bar 400 embedded in the horizontal direction on the electric pole is not broken, the magnetic field generated in the transverse reinforcing bar 400 comes out of the N pole and enters the S pole. . In this case, the magnetic field is weakest at the midpoint of the transverse reinforcing bar 400 , and the magnetic field increases toward both ends of the transverse reinforcing bar 400 .

On the other hand, as shown in (b) of FIG. 4, when the reinforcing bar 400 embedded in the transverse direction on the electric pole is broken, the magnetic pole is divided into an N pole and an S pole around the fractured interface. Accordingly, the magnetic force lines are concentrated on the fractured interface of the transverse reinforcing bar 400, and the strength of the magnetic field increases near the fractured boundary, and the strength of the magnetic field decreases as it moves away from the fractured boundary. have

However, unlike the steel wire 300 in the vertical direction, in the case of the reinforcing bar 400 in the transverse direction, the direction of the magnetic force line does not change in the up/down directions around the fractured interface. That is, the magnetic force lines in both the upper and lower directions around the fractured interface of the transverse reinforcing bar 400 have a characteristic indicating a left direction.

5 is a view showing the configuration of a non-destructive electric pole inspection equipment according to an embodiment of the present invention.

Referring to FIG. 5 , the non-destructive electric pole inspection equipment 500 according to an embodiment of the present invention includes a magnetic field detection unit 510 and a fracture detection unit 420 connected to the magnetic field detection unit 510 by wire or wirelessly. ) is included.

The magnetic field detection unit 510 is in close contact with the outer circumferential surface of the electric pole 100, and performs a function of detecting a magnetic field generated from a plurality of steel wires 120 and/or transverse reinforcing bars (not shown) embedded in the electric pole 100 . can do. In this case, the magnetic field detection unit 510 may detect a magnetic field generated from the plurality of steel wires 120 and/or transverse reinforcing bars while moving along the circumferential direction (ie, circumferential direction) of the electric pole 100 . In addition, the magnetic field detection unit 510 may detect a magnetic field generated from the plurality of steel wires 120 and/or transverse reinforcing bars while moving along the longitudinal direction (ie, the vertical direction) of the electric pole 100 .

The magnetic field detection unit 510 includes a plurality of magnetic sensor modules 511 , a module mounting unit 513 , and a gripping unit 515 .

The plurality of magnetic sensor modules 511 may be installed at regular intervals along the longitudinal direction of the module mounting unit 13 . Each magnetic sensor module 511 may detect a magnetic field generated from the steel wire 120 and/or transverse reinforcing bars adjacent thereto.

Each magnetic sensor module 511 may include a first magnetic sensor (not shown) and a second magnetic sensor (not shown) arranged in the longitudinal direction of the electric pole 100 . Here, the first and second magnetic sensors may be Hall sensors that measure a change in a magnetic field using a Hall effect. In addition, the first and second magnetic sensors may be formed in a rotatable structure to change the magnetic field measurement direction. A more detailed description of this will be provided later.

The module mounting unit 513 may be detachably/attachable to one side of the holding unit 515 . In addition, the module mounting unit 513 may be rotatably coupled to one side of the holding unit 515 .

The module mounting unit 513 provides an installation area for the plurality of magnetic sensor modules 511 and at the same time is in close contact with the outer circumferential surface of the electric pole 100 so that the plurality of magnetic sensor modules 511 are embedded in the electric pole 100 To be able to detect the magnetic field of the steel wire 120 and / or transverse reinforcement.

The module mounting part 513 may be formed to be curved in a shape corresponding to the outer circumferential surface of the electric pole 100 . Accordingly, one side of the module mounting part 513 can be in close contact with the outer peripheral surface of the electric pole 100 .

The holding unit 515 is a part that provides a predetermined holding area so that the operator can move the module mounting unit 513 on which the magnetic sensor module 511 is mounted in the circumferential direction or the vertical direction of the electric pole 100 . It will be apparent that the gripper 515 may be gripped by an operator by hand, but may be moved in the vertical direction by using a small crane or a crane.

The fracture detection unit 520 is connected to the magnetic field detection unit 510 by wire or wirelessly, and the magnetic field data about the steel wire 120 and/or the transverse reinforcement embedded in the electric pole 100 from the magnetic field detection unit 510 can receive The fracture detection unit 520 may store magnetic field data received from the magnetic field detection unit 510 in a memory (not shown).

The breakage detection unit 520 may detect whether the steel wire 120 embedded in the electric pole 100 is broken by analyzing the magnetic field data stored in the memory. In addition, the fracture detection unit 520 may analyze the magnetic field data stored in the memory to distinguish whether the steel wire 120 and the transverse reinforcing bar embedded in the electric pole 100 are broken.

6 and 7 are diagrams showing the configuration of a magnetic sensor module according to an embodiment of the present invention.

6 and 7, the magnetic sensor module 600 according to an embodiment of the present invention includes a housing 610, a first magnetic sensor block 620, a second magnetic sensor block 630, and a first rotation. It may include a member 640 and a second rotation member 650 .

The housing 610 is an outer case of the magnetic sensor module 600 , and may serve to support, fix, and receive the first magnetic sensor block 620 and the second magnetic sensor block 630 . To this end, the housing 610 may be formed in a rectangular parallelepiped shape having an empty space therein.

The first magnetic sensor block 620 may include a first magnetic sensor 625, through the first magnetic sensor 625 to detect the magnetic field generated from the steel wire and / or transverse reinforcing bars buried inside the electric pole. can

The first magnetic sensor block 620 may be disposed on the upper portion of the housing 610 , and may be configured to be rotatable from 0 degrees to 360 degrees in a clockwise or counterclockwise direction through the first rotation member 640 .

The second magnetic sensor block 630 may include a second magnetic sensor 635, and the second magnetic sensor 635 detects a magnetic field generated from a steel wire and/or a transverse reinforcing bar buried inside the electric pole. can

The second magnetic sensor block 630 is disposed under the housing 610 and may be configured to be rotatable from 0 to 360 degrees in a clockwise or counterclockwise direction through the second rotation member 650 . In this case, the second magnetic sensor block 630 may be disposed to be spaced apart from the first magnetic sensor block 620 by a predetermined distance. This is to prevent the second magnetic sensor block 630 from interfering with the rotation of the first magnetic sensor block 620 .

Through the rotation of the first magnetic sensor block 620 and the second magnetic sensor block 630, the magnetic fields of the first magnetic sensor 625 and the second magnetic sensor 635 mounted on the blocks 620 and 630 The measurement direction can be changed.

For example, as shown in FIG. 8 , the magnetic sensors 625 and 635 sense only the strength of a magnetic field that vertically penetrates a wide surface of a semiconductor element (or Hall element), and according to the direction of the magnetic field passing through the surface, It has the characteristic of outputting a '+' or '-' value. Accordingly, in order to measure the magnetic field of the vertical component generated from the reinforcing bar buried in the electric pole, the first and second magnetic sensor blocks are arranged so that the wide surface of the semiconductor device is arranged in a direction perpendicular to the direction of the magnetic field (ie, the horizontal direction). (620, 630) can be rotated. Conversely, in order to measure the magnetic field of the transverse component generated from the reinforcing bar buried in the electric pole, the first and second magnetic sensor blocks ( 620, 630) can be rotated.

The first rotation member 640 may be mounted on the housing 610 to rotate the first magnetic sensor block 620 . The second rotation member 650 may be mounted on the lower portion of the housing 610 to rotate the second magnetic sensor block 630 .

9 is a diagram referenced to explain a method of detecting whether a steel wire is broken using a magnetic sensor module.

Referring to FIG. 9 , the magnetic sensor module 900 according to the present embodiment may detect a change in the magnetic field generated from the steel wire 120 embedded in the electric pole while moving from the downward direction to the upward direction of the electric pole. In this case, the first and second magnetic sensors 915 and 925 mounted on the magnetic sensor module 900 may be arranged in the longitudinal direction of the electric pole.

The first and second magnetic sensors 915 and 925 may be set to have the same magnetic field measurement direction. For example, as shown in FIGS. 3 and 8, in order to measure the magnetic field of the transverse component generated at the breaking point of the steel wire 120 buried in the electric pole, the first and second magnetic sensors 915 and 925 are wide The surface may be set to be disposed in a direction perpendicular to the direction of the magnetic field (ie, a vertical direction). This may be implemented through rotation of the first and second magnetic sensor blocks 910 and 920 .

The first and second magnetic sensors 915 and 925 measure the change in the magnetic field with a certain time difference due to the separation distance between each other. For example, as shown in (b) of FIG. 9 , the first magnetic sensor 915 measures the magnetic field generated at the breaking point of the steel wire 120 to obtain the first magnetic field data corresponding to the first graph 930 . print out The second magnetic sensor 925 measures the magnetic field generated at the breaking point of the steel wire 120 and outputs second magnetic field data corresponding to the second graph 940 .

When the magnetic sensor module 900 moves away from the electric pole, the difference in magnetic field strength measured by the two magnetic sensors 915 and 925 installed at a short distance from each other is always measured close to '0'.

The breakage detection unit (not shown) determines whether the steel wire 120 embedded in the electric pole is broken based on the first and second magnetic field data 930 and 940 received from the first and second magnetic sensors 915 and 925 . can be detected. At this time, the breakage detection unit calculates the difference data 950 by subtracting the first magnetic field data 930 from the second magnetic field data 940 , and whether the steel wire 120 is broken based on the difference data 950 . can be detected.

The detection method according to the present embodiment may be used to diagnose the above-described first type of concrete pole, that is, the concrete pole 100 including only the plurality of steel wires 120 . Since the detection method uses the output difference of the first and second magnetic sensors 915 and 925, the magnetic field when the magnetic sensor module 900 is not in close contact with the surface of the concrete pole or does not move in parallel with the direction of the steel wire. It can be measured by changing the intensity of , which can reduce this measurement error.

10 and 11 are diagrams referenced to explain a method of identifying a fracture target inside an electric pole using a magnetic sensor module.

10 and 11, the second type of concrete pole 200, unlike the first type of concrete pole 100, a concrete structure (not shown), a plurality of steel wires 220 and transverse reinforcement ( 230) may be configured. Here, the transverse reinforcing bar 230 is arranged to surround the plurality of steel wires 220 in a spiral shape, and serves to support the plurality of steel wires 220 .

In the narrow inner region of the concrete pole 200, it can be simplified that the reinforcing bars 230 in the transverse direction are welded to each other to the steel wire 220 in the longitudinal direction. In this case, the steel wire 220 receiving the force of the concrete electric pole 200 may be broken, but the transverse reinforcing bar 230 may be broken due to the aging of the electric pole 200 . However, since the transverse reinforcing bar 230 does not significantly affect the safety of the electric pole 200 , it is necessary to distinguish whether the steel wire 220 and the transverse reinforcing bar 230 are broken.

The magnetic sensor module 1000 according to the present invention can detect a change in the magnetic field generated from the steel wire 220 and/or the transverse reinforcing bar 230 embedded in the electric pole while moving from the downward direction to the upward direction of the electric pole. In this case, the first and second magnetic sensors 1015 and 1025 mounted on the magnetic sensor module 1000 may be arranged in the longitudinal direction of the electric pole.

The first and second magnetic sensors 1015 and 1025 may be set so that respective magnetic field measurement directions are perpendicular to each other. For example, as shown in FIGS. 3, 4 and 8, in order to measure the magnetic field of the transverse component generated at the breaking point of the steel wire 220 embedded in the electric pole, the wide surface of the second magnetic sensor 1025 is It may be set to be disposed in a direction perpendicular to the direction of the magnetic field (ie, a vertical direction). In addition, in order to measure the magnetic field of the vertical component generated at the breaking point of the transverse reinforcing bar 230 embedded in the electric pole, the wide surface of the first magnetic sensor 1015 is in a direction perpendicular to the direction of the magnetic field (ie, the horizontal direction). ) can be set to be placed. This may be implemented through rotation of the first and second magnetic sensor blocks 1010 and 1020 .

First, as shown in FIG. 10 , when the steel wire 220 embedded in the electric pole is broken, the first magnetic sensor 1015 measures the magnetic field of the vertical component generated at the breaking point of the steel wire 220 to obtain the second magnetic field. 1 The first magnetic field data corresponding to the graph 1130 is output. The second magnetic sensor 1025 measures the magnetic field of the transverse component generated at the breaking point of the steel wire 220 and outputs second magnetic field data corresponding to the second graph 1140 . Here, the first graph 1130 has a pulse shape in which the strength of the magnetic field becomes a peak at the breaking point, and the second graph 1140 has an S-shape in which the strength of the magnetic field decreases from (+) to (-).

On the other hand, as shown in FIG. 11 , when the transverse reinforcing bar 230 embedded in the electric pole is broken, the first magnetic sensor 1015 measures the magnetic field of the vertical component generated at the breaking point of the transverse reinforcing bar 230 . Thus, the third magnetic field data corresponding to the third graph 1150 is output. The second magnetic sensor 1025 measures the magnetic field of the transverse component generated at the breaking point of the transverse reinforcing bar 230 and outputs fourth magnetic field data corresponding to the fourth graph 1160 . Here, the third graph 1150 has an S-shape similar to the second graph 1140 , and the fourth graph 1160 has a pulse shape similar to the first graph 1130 .

The breakage detection unit (not shown) analyzes the magnetic field data 1030, 1040, 1050, and 1060 received from the first and second magnetic sensors 1015 and 1025 to determine whether the steel wire 220 and the transverse reinforcement 230 are broken. can be detected.

For example, as a result of analyzing the magnetic field data, when the magnetic field data received from the first magnetic sensor 1015 and the magnetic field data received from the second magnetic sensor 1025 are similar to each other and have a linear shape close to zero, the fracture detection unit is It can be determined that the steel wire 220 and the transverse reinforcing bar 230 are not broken.

On the other hand, as a result of analyzing the magnetic field data, when the magnetic field data received from the first magnetic sensor 1015 has a pulse shape and the magnetic field data received from the second magnetic sensor 1025 has an S shape, the fracture detection unit is buried in the electric pole It can be determined that the steel wire 220 is broken.

In addition, as a result of analyzing the magnetic field data, when the magnetic field data received from the first magnetic sensor 1015 has an S-shape and the magnetic field data received from the second magnetic sensor 1025 has a pulse shape, the fracture detection unit is embedded in an electric pole It can be determined that the transverse reinforcing bar 230 is broken.

The detection method according to the present embodiment may be used to diagnose the second type of concrete pole described above, that is, the concrete pole 200 including the plurality of steel wires 220 and the transverse reinforcement 230 . The detection method can easily distinguish whether the steel wire and the transverse reinforcing bar embedded in the electric pole are broken by using a magnetic sensor module including two magnetic sensors arranged in the longitudinal direction of the electric pole.

Meanwhile, although specific embodiments of the present invention have been described above, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the described embodiments, and should be defined by the following claims as well as the claims and equivalents.

500: non-destructive pole inspection equipment 510: magnetic field detection unit
511: magnetic sensor module 513: module mounting part
515: grip part 520: breakage detection unit

Claims (5)

A magnetic field detection unit for detecting a magnetic field generated from a steel wire or transverse reinforcing bar embedded in the electric pole by using a plurality of magnetic sensor modules arranged in a predetermined pattern in close contact with the outer circumferential surface of the electric pole; and
A breakage detecting unit connected to the magnetic field detecting unit by wire or wirelessly to detect whether the steel wire or the transverse reinforcing bar is broken based on the magnetic field data received from the plurality of magnetic sensor modules,
Each magnetic sensor module is a non-destructive electric pole inspection equipment, characterized in that it comprises a first magnetic sensor block and a second magnetic sensor block arranged in the longitudinal direction of the pole. The method of claim 1,
Each magnetic sensor module includes a housing for accommodating the first and second magnetic sensor blocks, a first rotating member for rotating the first magnetic sensor block, and a second magnetic sensor block for rotating the second magnetic sensor block. 2 Non-destructive electric pole inspection equipment, characterized in that it further comprises a rotating member. The method of claim 1,
The first magnetic sensor block includes a first magnetic sensor for measuring the strength and direction of the magnetic field, and the second magnetic sensor block includes a second magnetic sensor for measuring the strength and direction of the magnetic field Non-destructive electric pole inspection equipment characterized by. 4. The method of claim 3,
The first and second magnetic sensors, through rotation of the first and second magnetic sensor blocks, non-destructive electric pole inspection equipment, characterized in that arranged to have the same magnetic field measurement direction to each other. 4. The method of claim 3,
The first and second magnetic sensors, through rotation of the first and second magnetic sensor blocks, non-destructive electric pole inspection equipment, characterized in that arranged to have a magnetic field measurement direction perpendicular to each other.

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