KR102260934B1 - A method of control of load test system and a location measurement method therefor - Google Patents

Abstract

Provided are a method for controlling a load test system and a method for measuring a position therefor. The method for controlling the load test system comprises: a height measuring step to measure the height of preset points for a target through a laser distance measuring apparatus; a data reception step to receive height data for each of the preset points in the height measuring step through a receiving module; and a data processing step to draw the displacement of the target through a processing module based on the data received in the data reception step. In addition, provided is a method for measuring the height of the load test system, which comprises: a step of setting one or more first points on an upper surface of a target placed apart from the ground; a step of setting a relative coordinate to the first points from a reference point apart from the target by using a light wave unit; a step of setting a second point overlapped with the ground on a virtual vertical line with the first points, and setting a relative coordinate to the second point from the reference point; a step of installing a laser distance measuring apparatus at the second point; and a step of measuring the height of a third point overlapped with the first point on a lower surface of the target by using the laser distance measuring apparatus. The present invention relates to a method for controlling a load test system and a method for measuring a position therefor, which are able to easily identify a point placed in a lower portion of a target regardless of the distance between the ground and the target.

Description

{A method of control of load test system and a location measurement method therefor}

The present invention relates to a laser distance measuring device for a load test system, and more particularly, by installing a laser distance measuring device on the ground, measuring the height toward a target spaced apart from the ground, and deriving the displacement of the height under the load It relates to a laser distance measuring device for a load test system that can

In general, in order to determine the correct load-bearing capacity of a bridge structure, a predetermined load is applied to the bridge structure to measure the actual structure's behavior.

The most important behavior of the actual bridge structure behavior is the displacement of the bridge structure due to the load, which is measured very precisely and reflected in the structural calculation to accurately grasp the load-bearing capacity of the bridge structure.

As a method of measuring the displacement of such a bridge structure, various methods such as a displacement meter, a method using a continuous displacement meter, a method using a laser, and a method using a photographic image are applied. A possible method is known as a method of measuring displacement by installing a displacement meter on a fixed frame.

As the fixed frame used at this time, the most accurate method is to install a scaffold, but installing and dismantling the scaffold requires a lot of money and time, and it is necessary to secure a site for installing the scaffold. do.

Therefore, in the prior art, as an alternative to solving the problem when using the scaffold, a method of erecting a displacement gauge installation rod using a triangular support has been mainly applied.

However, the method of erecting the displacement gauge installation rod using the triangular support as described above is very effective because it can be quickly installed and dismantled at a low height. However, as the length of the installation rod becomes longer, the reliability of the verticality of the installation rod decreases rapidly. In addition to quality, even if the installation rod is erected vertically, it is difficult to secure the reliability of the measured value if the weather conditions are slightly poor due to the severe wind effect.

In order to solve this problem, in the prior art, the upper end of the rod was fixed with a wire to secure the verticality of the rod and to avoid the influence of wind. However, the verticality of the displacement gauge installed on the top of the rod is only visible with the naked eye. However, when the height of the bridge structure is high, there is also a problem in that there is a limit to the installation.

Korean Patent Publication No. 10-1599903 (registered on Feb. 26, 2016)

The present invention is to solve such a problem, and more specifically, by installing a laser distance measuring device facing the lower surface of the target on the ground to measure the height of the target or to derive the displacement according to the load condition of the load test system An object of the present invention is to provide a control method and a position measurement method therefor.

The present invention for performing the above object is a height measuring step of measuring the height of the set points of the target through a laser distance measuring device; a data receiving step of receiving the height data for each point set in the height measuring step to a receiving module; and a data processing step of deriving a displacement of a target through a processing module based on the data received in the data receiving step; provides a control method of a load test system comprising: a.

The data receiving step may receive each of the height data of the set points through a unit receiver of the receiving module.

In the data processing step, extracting the height data of the set points, storing the height data for each set point, and extracting the first data and the height data stored in the step of storing the height data It may include a derivation step of comparing the extracted second data or deriving the displacement of the target by comparing the second data with each other.

The data processing step may include a conversion step of converting the height data measured in the height measurement step into height data to be recognized in the height data extraction step.

The control method of the load test system may further include a data display step of displaying the displacement of the height data derived in the data processing step through the user's personal computer or portable terminal.

In addition, the present invention comprises the steps of setting one or a plurality of first points on the upper surface of the target spaced apart in the ground; Setting relative coordinates for the first point from a reference point away from a target using a light wave; Setting a second point overlapping the ground on an imaginary vertical line with the first point, and from the reference point to the second point Setting the relative coordinates for; Installing a laser distance measuring device at the second point; and measuring the height of the third point overlapping the first point on the lower surface of the target with the laser distance measuring device; provides a method for measuring the height of a load test system comprising: a.

The step of setting the relative coordinates of the second point includes the steps of placing a reflector by a user in proximity to the first point on the ground, measuring a distance using a light wave on the reflector, and a reflector at the second point It may include the step of repeatedly measuring the distance while moving the reflector until the position.

In the step of installing the laser distance measuring device, the first laser of the laser distance measuring device is aligned so that a second laser directed in the opposite direction to the first laser is irradiated to the second point in order to align with the third point. It may include disposing the laser distance measuring device, adjusting the level of the laser distance measuring device, and moving the second laser in a horizontal direction so that the second laser is irradiated to the second point.

The disposing of the laser distance measuring device may include adjusting the height and angle of the support legs of the laser distance measuring device.

The step of adjusting the horizontal includes rotating the first rotational member in a set angle range around the first rotational axis by rotating the first dial, and rotating the second dial to obtain a second rotational axis perpendicular to the first rotational axis. It may include the step of rotating the second rotation member to the center in a set angle range.

The moving in the horizontal direction includes aligning the horizontal moving unit along a first direction formed on a virtual horizontal plane, and aligning the horizontal moving unit along a second direction orthogonal to the first direction and in the virtual horizontal plane. may include.

The step of installing the laser distance measuring device may include correcting the installation height of the laser distance measuring device so that the heights of all the second points corresponding to the third point on the ground are the same.

According to the control method of the load test system according to the embodiment of the present invention and the position measurement method therefor,

First, regardless of the distance between the ground and the target, the point located below the target can be easily identified,

Second, since the distance is measured by irradiating the laser to the point below the target, it can be less affected by the external environment such as wind.

Third, it is possible to determine the exact installation location of the laser distance measuring device on the ground,

Fourth, it is possible to precisely adjust the irradiation position of the laser module through the position setting unit and the angle adjusting unit,

Fifth, it is possible to easily transmit the height data measured by the laser distance measuring device for each point,

Sixth, height data can be easily measured under no-load, dynamic-load and static loading of the target.

Seventh, extraction, storage, and processing of height data are simultaneously performed in the processing module, thereby facilitating displacement derivation.

1 is a perspective view showing a laser distance measuring device for a load test system according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view showing the disassembled laser distance measuring device for the load test system shown in FIG. 1 .
3 is a plan view showing the laser distance measuring device for the load test system shown in FIG. 2 from the top.
Figure 4 is a perspective view showing the laser distance measuring device for the load test system shown in Figure 2 from the bottom.
5 is a perspective view showing an angle adjusting unit of the laser distance measuring device for the load test system shown in FIG.
6 is a perspective view illustrating a state in which the angle adjusting unit of the laser distance measuring device for the load test system shown in FIG. 5 is rotated.
7 is a perspective view showing a horizontal moving part of the laser distance measuring device for the load test system shown in FIG.
8 is a perspective view showing a state in which the horizontal moving part of the laser distance measuring device for the load test system shown in FIG. 7 is moved.
9 is a perspective view illustrating a state in which the height of the target is measured using the load test system according to the second embodiment of the present invention.
FIG. 10 is a reference diagram illustrating a state in which a set point located at an upper portion of a target is searched from a lower portion of the target to measure the height of the target using the load test system shown in FIG.
11A is a perspective view illustrating a load test system according to a second embodiment of the present invention.
Fig. 11B is a block diagram showing a detailed configuration of the processing module shown in Fig. 11A.
12 is a reference diagram illustrating a graph in which the height of a target is measured using the load test system shown in FIG. 9 .
13 is a block diagram showing a control method of the load test system of the present invention.
14 is a flowchart according to the control method of the load test system shown in FIG.
15 is a block diagram illustrating a height measurement method of the load test system of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated and described in the drawings.

However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms including an ordinal number such as first, second, etc. may be used to describe various elements, but the elements are not limited by the terms.

The above terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the second component may be referred to as the first component, and similarly, the first component may also be referred to as the second component.

and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be

On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, the embodiment will be described in detail with reference to the accompanying drawings, but regardless of the reference numerals, the same or corresponding components are given the same reference numerals, and the overlapping description thereof will be omitted.

The laser distance measuring device for the load test system according to the first embodiment of the present invention is installed on the ground (ground) under the target to measure the displacement according to the load state of the target.

In this embodiment, a structure in which the laser distance measuring device measures the displacement of a leg is described by taking as an example that the target is a bridge, but may be applied to other structures.

1 is a perspective view illustrating a laser distance measuring device for a load test system according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view showing the laser distance measuring device for a load test system shown in FIG. 3 is a plan view showing the laser distance measuring device for the load test system shown in FIG. 2 from the top.

1 to 3 , the laser distance measuring apparatus 100 for a load test system according to a first embodiment of the present invention includes a distance measuring unit 110 , a transmitting unit 120 , a positioning unit 130 , and a bracket. 140 , an angle adjustment unit 150 , a horizontal moving unit 160 , and a support leg 170 .

First, the distance measuring unit 110 includes a light emitting unit ( FIGS. 3 and 111 ) that emits a first laser L1 toward a target, and a light receiving unit ( FIG. 3 ) that detects the first laser L1 reflected from the target. , 112).

Although not shown in the drawing, the distance measuring unit 110 may include a counter (not shown) for measuring the time the first laser L1 is emitted and received to the target. Therefore, the distance measuring unit 110 coincides with the aiming line of the light output unit 111 and the optical axis of the first laser (L1), and after emitting a laser having excellent directivity, the first laser (L1) is reflected from the target and returned Distance can be calculated by measuring time.

Since the detailed structure of the distance measuring unit 110 using a laser is known technology, a detailed description thereof will be omitted.

The distance measuring unit 110 may emit the first laser a plurality of times per second, and may measure the displacement of the target through the distance difference according to the light reception time of each of the emitted first lasers L1 . .

In addition, the transmitter 120 may transmit data measured by the distance measurer 110 to the outside. The transmitter 120 may transmit data by wire or wirelessly.

Although not shown in the figure, when transmitting data wirelessly, the transmitter 120 includes an oscillator, a modulator, a filter, a power amplifier, and an antenna. can do. The oscillator creates a signal to be used as a carrier wave, and the modulator receives the data signal and the oscillator signal and modulates it. And in order to supply enough energy to transmit it to a remote location, power can be amplified and transmitted. The antenna induces effective transmission and can radiate into the air.

A voltage-controlled oscillator (VCO) may be provided as the oscillator. The voltage controlled oscillator refers to an oscillator that changes a frequency according to a change in an applied voltage. Since the oscillation frequency may be unstable by environmental conditions other than voltage, the frequency may be generally fixed using a circuit called a phase locked loop (PLL).

The filter may have frequency components other than the modulated data signal, and is responsible for removing them and separating only the signal to be transmitted.

Also, the transmitter 120 may transmit data in any one of Wi-Fi, Bluetooth, Zigbee, RFID, NFC, Lora, IR, and RF.

In addition, the support leg 170 moves the distance measuring unit 110 , the transmitting unit 120 , the position setting unit 130 , the bracket 140 , the angle adjusting unit 150 , and the horizontal moving unit 160 from the ground. It provides support function. Although the support leg 170 is illustrated as having a structure including three support frames 171 as shown in FIG. 1 , the number of support frames is not limited thereto.

The support leg 170 may include a support part 172, a height adjusting means (not shown), and an angle adjusting means (not shown).

The support unit 172 is selectively coupled to the lower portion of the horizontal moving unit 160 to be described later, and the horizontal moving unit 160 and the supporting leg 170 are detachable. A plurality of fixing means 173 that selectively interfere with the lower portion of the horizontal moving unit 160 by rotation or sliding movement are provided on the support unit 172 .

The height adjusting means (not shown) and the angle adjusting means (not shown) can adjust the height or horizontality of the laser module to be described later from the ground.

Figure 4 is a perspective view showing the laser distance measuring device for the load test system shown in Figure 2 from the bottom.

As shown in FIGS. 2 and 4 , the positioning unit 130 irradiates the second laser L2 in a direction opposite to the first laser L1 of the distance measuring unit 110 . The position setting unit 130 has a function of setting the position where the laser distance measuring device 100 for the load test system is installed on the ground, and the first laser (L1) and the second laser (L2) are on a virtual vertical line. The distance measuring unit 110 and the position setting unit 130 may be aligned to be disposed on the . Of course, considering the structure or shape of the ground or the situation in which the second laser L2 cannot be located on the same vertical line as the first laser L1, the first laser L1 and the second laser L2 are one They may be arranged to have an offset distance from each other with respect to a vertical line.

A horizontal measurement unit 131 is provided on the upper surface of the position setting unit 130 .

The horizontal measuring unit 131 includes a first horizontal system 132 for measuring the horizontality in a first direction formed on a virtual horizontal plane, and a second horizontal system 133 for measuring the horizontality in a second direction orthogonal to the first direction. includes

In addition, the bracket 140 may combine the distance measuring unit 110 , the transmitting unit 120 , and the position setting unit 130 into one modular structure. Of course, the transmitter 120 may be disposed in a structure other than the bracket 140 . However, since the distance measuring unit 110 and the position setting unit 130 have to be irradiated with the first laser (L1) and the second laser (L2) in opposite directions to each other on a virtual vertical line, one bracket 140 ) is preferred. Hereinafter, a structure in which the distance measuring unit 110, the transmitting unit 120, and the position setting unit 130 are integrally coupled to the bracket 140 will be described as an example, and the coupled structure is expressed as a “laser module”. do.

The horizontal measurement unit 131 may measure the horizontal of the laser module LM so that the first laser L1 and the second laser L2 are precisely irradiated vertically from the ground.

In addition, the positioning unit 130 may be coupled to the lower side of the bracket 140 . Of course, the bracket 140 and the position setting unit 130 may be formed of an integral configuration.

An angle adjusting unit 150 and a horizontal moving unit 160 are provided under the laser module LM, respectively.

The angle adjusting unit 150 and the horizontal moving unit 160 may optionally be sequentially coupled to the lower portion of the laser module LM, and below, the angle adjusting unit 150 is coupled to the lower portion of the laser module LM, A structure in which the horizontal moving unit 160 is coupled to the lower portion of the angle adjusting unit 150 will be described as an example.

5 is a perspective view showing an angle adjusting unit of the laser distance measuring device for the load test system shown in FIG. 2, and FIG. 6 is a perspective view showing a state in which the angle adjusting unit of the laser distance measuring device for the load test system shown in FIG. 5 is rotated. to be.

5 and 6 , the angle adjusting unit 150 may adjust the angle of the laser module (refer to FIG. 4 , LM) within a set range.

The angle adjusting unit 150 includes a first rotating unit 151 and a second rotating unit 152 . The first rotation unit 151 and the second rotation unit 152 have the same structure, and may be rotated about different rotation axes. Of course, the first rotation unit 151 and the second rotation unit 152 may have rotation ranges of different angle ranges. Hereinafter, the first rotation unit 151 and the second rotation unit 152 have the same or similar structure to each other, and the first rotation axis of the first rotation unit 151 and the second rotation axis of the second rotation unit 152 are perpendicular to each other. A structure in which the first rotation unit 151 and the second rotation unit 152 are combined will be described as an example.

The first rotation unit 151 includes a first rotation member 1511 , a first fixing member 1512 , and a first dial 1513 .

The first rotation member 1511 is coupled to support the lower portion of the laser module LM. That is, the first rotation member 1511 may be rotated simultaneously with the laser module LM, and may be rotated relative to each other within a range set from the first fixing member 1512 .

The structure in which the first rotation member 1511 and the first fixing member 1512 are coupled may have a substantially rectangular parallelepiped shape, and one of the two pairs of surfaces facing each other is in contact with each other in a curved surface, The other pair of opposite sides are in planar contact with each other. That is, a pair of curved surfaces has the same curvature so that the first rotation member 1511 can rotate relative to the first fixing member 1512 about the first rotation axis, and the other pair of side surfaces has a first dial ( 1513) is placed.

A first guide member 1514 for guiding their sliding rotation is provided between the first rotation member 1511 and the first fixing member 1512 . The first guide member 1514 accompanies the function of guiding the first rotation member 1511 and the first fixing member 1512 in a rotation direction when the first rotation member 1511 and the first fixing member 1512 are coupled to each other and at the same time relative rotation is performed.

The rotation of the first rotation member 1511 is performed by rotation of the first dial 1513 . The first rotation member 1511 and the first dial 1513 may be configured to rotate in different directions.

The first dial 1513 is disposed to mesh inside the first rotation member 1511, and the direction of rotation of the first rotation member 1511 by clockwise and counterclockwise rotation of the first dial 1513 can be controlled. For example, although not shown in the drawings, a worm gear is provided inside the first dial 1513 , and a curved rack that meshes with the worm gear is provided inside the first rotation member 1511 . can be

Accordingly, the rotation of the first rotation member 1511 can be precisely controlled by the rotation of the first dial 1513 , and the first rotation member 1511 is positioned on the first fixing member 1512 on the first dial 1513 . ), it is possible to prevent rotation by the load of the laser module (LM) without the rotation operation.

A first scale pattern 1515 is provided on one side surface of the first rotation unit 151 where the first rotation member 1511 and the first fixing member 1512 face a curved surface. The first scale pattern 1515 includes a scale provided on one member of the first rotation member 1511 and the first fixing member 1512 and a reference point provided on the other member of the first rotation member 1511 and the first rotation member 1515 . The angle at which the fixing member 1512 is rotated relative to each other can be checked. In this embodiment, a scale is provided on the first rotation member 1511 and a reference point is provided on the first fixing member 1512 will be described as an example.

The second rotation unit 152 has the same structure as the first rotation unit 151 and is disposed in a state rotated by 90° with the lower center of the first rotation unit 151 as the rotation axis.

The second rotation unit 152 includes a second rotation member 1511 , a first fixing member 1512 , a first dial 1513 , and a first guide member 1514 corresponding to the first rotation member 1514 of the first rotation unit 151 , respectively. It includes a rotation member 1521 , a second fixing member 1522 , a second dial 1523 , and a second guide member 1524 .

The second rotation unit 152 includes a second rotation member 1521 , a second fixing member 1522 and a second dial (see FIG. 2 , 1523 ).

The structure in which the second rotation member 1521 and the second fixing member 1522 are combined may have a substantially rectangular parallelepiped shape, and one of the two pairs of surfaces facing each other is in contact with each other in a curved surface, The other pair of opposite sides are in planar contact with each other. That is, a pair of curved surfaces has the same curvature so that the second rotation member 1521 can rotate relative to the second fixing member 1522 about the second rotation axis, and a second dial ( 1523) is placed.

A second guide member 1524 is provided between the second rotation member 1521 and the second fixing member 1522 to guide their sliding rotation. The first guide member 1514 accompanies the function of guiding the first rotation member 1511 and the first fixing member 1512 in a rotation direction when the first rotation member 1511 and the first fixing member 1512 are coupled to each other and at the same time relative rotation is performed.

The second rotation member 1521 is rotated by rotation of the second dial 1523 . The second rotation member 1521 and the second dial 1523 may be configured to rotate in different directions.

The second dial 1523 is disposed to mesh inside the second rotation member 1521, and the direction of rotation of the second rotation member 1521 by clockwise and counterclockwise rotation of the second dial 1523 can be controlled. For example, although not shown in the drawings, a worm gear is provided inside the second dial 1523 , and a rack having a curved surface that meshes with the worm gear is provided inside the second rotation member 1521 . can be

Accordingly, the rotation of the second rotation member 1521 can be precisely controlled by the rotation of the second dial 1523 , and the second rotation member 1521 is positioned on the second fixing member 1522 by the second dial 1523 . ), it is possible to prevent rotation by the load of the laser module (LM) without the rotation operation.

A second scale pattern 1525 is provided on one side surface of the second rotation part 152 where the second rotation member 1521 and the second fixing member 1522 face the curved surface. The second scale pattern 1525 is formed through a scale provided on one member of the second rotation member 1521 and the second fixing member 1522 and a reference point provided on the other member of the second rotation member 1521 and the second rotation member 1521 . The angle at which the fixing member 1522 is rotated relative to each other can be checked. In this embodiment, it will be described as an example that a scale is provided on the second rotation member 1521 and a reference point is provided on the second fixing member 1522 .

Therefore, if the first rotation member 1511 rotates the x-axis as the rotation axis, the second rotation member 1521 is spaced apart by the height of the imaginary plane on which the x-axis is arranged and the first rotation part 150a in another plane parallel to it. The y-axis can be rotated as a rotation axis. Of course, the x-axis and the y-axis may be disposed on the same virtual plane.

7 is a perspective view showing the horizontal moving part 160 of the laser distance measuring device for the load test system shown in FIG. 2, and FIG. 8 is the horizontal moving part 160 of the laser distance measuring device for the load test system shown in FIG. is a perspective view showing a moved state.

7 and 8, the horizontal moving unit 160 is to move the laser module (see Fig. 4, LM) or the angle adjustment unit (see Fig. 5, 150) parallel to the x-axis or y-axis along the horizontal direction. can In this embodiment, a structure in which the laser module LM, the angle adjustment unit 150 and the horizontal movement unit 160 are sequentially combined will be described as an example, and the horizontal movement of the laser module LM is performed by the laser module LM. and the angle adjusting unit 150 simultaneously move in the horizontal direction. Of course, when the horizontal movement unit 160 is directly coupled to the lower portion of the laser module LM, the horizontal movement of only the laser module LM can be adjusted.

The horizontal moving unit 160 includes a first moving unit 161 and a second moving unit 162 .

The first moving unit 161 moves the laser module LM within a set distance range along the first direction on the virtual horizontal plane, and the second moving unit 162 is the virtual horizontal plane of the first moving unit 161 . The laser module LM may be moved within a set distance range along a second direction different from the first direction on a parallel horizontal plane that is the same as or spaced apart from each other. In this embodiment, the first direction and the second direction may be disposed at right angles to each other.

In other words, since the first moving unit 161 moves along the x-axis and the second moving unit 162 moves along the y-axis in the horizontal moving unit 160, the laser module LM moves along the x-axis on the same horizontal plane. and horizontal movement along the y-axis.

The horizontal movement unit 160 provides a function of adjusting the fine horizontal movement of the laser module LM so that the second laser L2 is irradiated to a position set on the ground.

The first moving part 161 includes a first transferring member 1611 , a first supporting member 1612 , and a first rotating wheel 1613 .

The first transfer member 1611 is coupled to support the lower portion of the angle adjusting unit 150 . Of course, when the horizontal moving unit 160 is directly coupled to the lower portion of the laser module LM, the first transfer member 1611 may be coupled to support the lower portion of the laser module LM.

The first transfer member 1611 and the first support member 1612 are arranged to be relatively movable by the rotation of the first rotation wheel 1613 .

The first moving part 161 is rotatably coupled to the first rotation wheel 1613 on the first support member 1612, and the first transfer member 1611 and the first rotation wheel 1613 are engaged with each other. can be placed. Accordingly, the rotational movement of the first rotation wheel 1613 may control the horizontal movement of the first transfer member 1611 . For example, as shown in FIG. 8 , when the first rotation wheel 1613 rotates clockwise, the first transfer member 1611 moves from the first support member 1612 to the right along the first direction, and the first rotation wheel When the 1613 rotates counterclockwise, the first transfer member 1611 may move to the left from the first support member 1612 in the first direction.

A first guide member 1614 for guiding their sliding movement is provided between the first transfer member 1611 and the first support member 1612 . The first guide member 1614 accompanies the function of guiding the first transfer member 1611 and the first support member 1612 along the moving direction when the first transfer member 1611 and the first support member 1612 are coupled to each other and at the same time relative movement is made.

The first rotation wheel 1613 may be disposed to engage in the interior of the first transfer member 1611 . For example, although not shown in the drawings, a pinion gear is provided inside the first rotation wheel 1613, and a rack meshing with the pinion gear may be provided inside the first transfer member 1611. have.

Accordingly, it is possible to precisely control the movement of the first transfer member 1611 by the rotation of the first rotation wheel 1613 .

The first moving part 161 is provided with a first scale pattern 1615 on one side surface where the first transfer member 1611 and the first support member 1612 face each other. The first scale pattern 1615 is the first transfer member 1611 and the first transfer member 1611 through the scale provided on one member of the first transfer member 1611 and the first support member 1612 and the reference point provided on the other member. The relative movement distance of the support member 1612 may be checked. In this embodiment, a reference point is provided on the first transfer member 1611 and a scale is provided on the first support member 1612 will be described as an example.

The second moving unit 162 has the same structure as the first moving unit 161 , and is disposed in a state rotated by 90° with the lower center of the first moving unit 161 as a rotation axis.

The second moving part 162 is a second moving member 1611 , a first supporting member 1612 , a first rotating wheel 1613 , and a second corresponding to the first guide member of the first moving part 161 , respectively. It includes a transfer member 1621 , a second support member 1622 , a second rotation wheel 1623 , and a second guide member 1624 . The second moving unit 162 moves the laser module LM within a set distance range along the first direction on the virtual horizontal plane, and the second moving unit 162 is the virtual horizontal plane of the first moving unit 161 . The laser module LM may be moved within a set distance range along a second direction different from the first direction on a parallel horizontal plane that is the same as or spaced apart from each other. In this embodiment, the first direction and the second direction may be disposed at right angles to each other.

The second moving part 162 includes a second transfer member 1621 , a second support member 1622 , and a second rotation wheel 1623 .

The second transfer member 1621 and the second support member 1622 are arranged to be relatively movable by the rotation of the second rotation wheel 1623 .

The second moving part 162 is coupled so that the second rotation wheel 1623 is rotatably on the second support member 1622, and the second transfer member 1621 and the second rotation wheel 1623 are engaged with each other. can be placed. Accordingly, the rotational movement of the second rotation wheel 1623 may control the horizontal movement of the second transfer member 1621 . For example, when the second rotation wheel 1623 rotates clockwise, the second transfer member 1621 moves to the right from the second support member 1622 in a second direction perpendicular to the first direction, and the second rotation When the wheel 1623 rotates counterclockwise, the second transfer member 1621 may move to the left from the second support member 1622 in the first direction.

A second guide member 1624 for guiding their sliding movement is provided between the second transfer member 1621 and the second support member 1622 . The second guide member 1624 accompanies the function of guiding the second transfer member 1621 and the second support member 1622 along the moving direction when the second transfer member 1621 and the second support member 1622 are coupled to each other and at the same time relative movement is made.

The second rotation wheel 1623 may be disposed to mesh with the inside of the second transfer member 1621 . For example, although not shown in the drawings, a pinion gear is provided inside the second rotary wheel 1623, and a rack that meshes with the pinion gear may be provided inside the second transfer member 1621. have.

Accordingly, it is possible to precisely control the movement of the second transfer member 1621 by the rotation of the second rotation wheel 1623 .

The second moving part 162 is provided with a second scale pattern 1625 on one side surface where the second transfer member 1621 and the second support member 1622 face each other. The second scale pattern 1625 is formed through a scale provided on one member of the second transfer member 1621 and the second support member 1622 and a reference point provided on the other member of the second transfer member 1621 and the second transfer member 1621 . The relative movement distance of the support member 1622 may be checked. In this embodiment, a reference point is provided on the second transfer member 1621 and a scale is provided on the second support member 1622 as an example.

Accordingly, if the first transfer member 1611 moves along the x-axis, the second transfer member 1621 is spaced apart from the virtual plane on which the x-axis is arranged by the height of the first moving part 161 and is parallel to the other plane. It can move along the y-axis.

9 is a perspective view illustrating a state in which the height of a target is measured using the load test system according to the second embodiment of the present invention.

The load test system according to the second embodiment of the present invention can measure the height data of the target bridge (BR) using the laser distance measuring device, and derive the leg displacement based on this data .

As shown in FIG. 9 , the bridge BR is displaced from the ground according to the static load and the dynamic load from the no-load state. At this time, if the leg sag occurs as a load is applied at the leg height (in its original position, h1) in the no-load state, the leg sags and the displacement due to the deformation (for example, it can be expressed as height difference, movement amount, bending amount) It occurs, the load test system can measure the displacement of a plurality of set points on the leg to perform the basic step of safety diagnosis.

FIG. 10 is a reference diagram illustrating a state in which a set point located at an upper portion of a target is searched from a lower portion of the target to measure the height of the target using the load test system shown in FIG. 9 .

Referring to FIGS. 9 and 10 , in the bridge BR, since the most deflection or deformation occurs basically in the central region between the pier P1 and the pier P2, the central region of the upper surface where the displacement is the greatest. A plurality of points (hereinafter, referred to as a first point (S1; spot 1)) are set in . And, in order to measure the height corresponding to the first point (S1) of the upper surface of the bridge from the lower part of the bridge, a second point (S2) corresponding to the first point (S1) is set on the ground, and the second point (S2) When the laser distance measuring device (see FIG. 1, 100) is installed in the irradiating the first laser (L1) in the direction of the first point (S1), the third point (S3) is set on the lower surface of the leg. That is, the first point S1 , the second point S2 , and the third point S3 are arranged to form a coaxial line state on one vertical line when viewed from the top in a plan view.

Each of the first point S1 to the third point S3 may consist of at least one point or a plurality of equally spaced patterns. In this embodiment, the setting of nine patterns at the first point is described as an example, and the number or arrangement of the patterns for each point is not limited thereto.

The method of setting the first point S1 to the third point S3 and the configuration not described will be described separately.

11A is a perspective view showing a load test system according to a second embodiment of the present invention, and FIG. 11B is a block diagram showing a detailed configuration of the processing module shown in FIG. 11A. Hereinafter, the same reference numerals as the aforementioned reference numerals denote the same components.

Referring to FIG. 11 , the load test system 1 according to the second embodiment of the present invention includes a laser distance measuring device 100 , a receiving module 200 , and a processing module 300 .

Since the laser distance measuring apparatus 100 has been described in detail above, a redundant description will be omitted.

The receiving module 200 receives the measured height data from the laser distance measuring device 100 .

The receiving module 200 includes a plurality of unit receivers 210 to receive height data of a plurality of third points (see FIG. 10 , S3 ) from the transmitter of the laser distance measuring apparatus 100 .

The unit receiver 210 may be formed in a number corresponding to at least the number of points of the third point S3 or may be formed in a larger number.

A single unit receiver 210 corresponds to a single laser distance measuring device 100 .

Each unit receiver 210 may receive the height data by wire or wirelessly from the transmitter of each laser distance measuring device 100 . In this embodiment, wirelessly receiving height data will be described as an example.

The height data received from the receiving module 200 is transmitted to the processing module 300 .

The processing module 300 includes a number of unit ports 310 corresponding to each unit receiver 210 or greater than each unit receiver so that the height data of each point can be provided.

The processing module 300 includes a data extraction unit 320 , a data storage unit 330 , and a data processing unit 340 .

The data extraction unit 320 receives and extracts the height data through each unit pod 310 . The data extraction unit 320 may extract data for each point or time.

The extracted height data is stored in the data storage 330 . The height data stored in the data storage unit 330 may have a displacement according to the passage of time for each point. In addition, the data storage unit 330 may separate and store the displacement according to the dynamic load and the static load state for each point. Of course, it is also possible to separately input and store the leg height data in the no-load state, or measure and store the data.

The data processing unit 340 derives the displacement by directly receiving the height data from the laser distance measuring device 100 in real time, or by receiving the height data stored in the data storage unit 330 .

For example, the data processing unit 340 may derive the displacement from the first data stored in the data storage unit 330 , and may derive the displacement from the second data directly transmitted from the data extraction unit 320 , or A displacement between the first data and the second data may be derived. The first data includes information of a past time stored in the data storage unit 330 , and the second data includes information of a current time transmitted in real time.

The processing module 300 includes a conversion unit 350 for converting the height data measured by the laser distance measuring device 100 into height data to be recognized by the data extraction unit 320 .

The conversion unit 350 converts the height data transmitted to the data storage unit 330 through the data extraction unit 320 to the voltage (V), for example, when the height data measured by the laser distance measuring device 100 is in mm units. can be converted to a value. Of course, another conversion unit (not shown) may be further provided to display the data output from the processing module 300 again in mm units.

And, the load test system 1 may include a personal computer (PC, 400) or a portable terminal that displays the height data or displacement derived from the data processing unit 340 so that the user can monitor it. 11 shows that the user can check the data through the personal computer 400, if the user has a function to check the data, a structure including another display may be included in the present invention.

12 is a reference diagram illustrating a graph in which the height of a target is measured using the load test system shown in FIG. 9 .

Referring to FIG. 12 , the x-axis represents time, and the y-axis represents height. That is, it is possible to check the change in height according to the change of time.

In the graph of FIG. 12 , as the vehicle moves to the center region of the bridge while operating the laser distance measuring device, the measurement is performed according to the movement. And as the vehicle stops, the change in the height of the bridge gradually decreases, and at the point where the dynamic load ends, another measurement is made under the still standing position. Therefore, by subtracting the leg height in the standing state from the leg height in the no-load state, the displacement Δh can be derived. If it is a process of simply deriving displacement, the height data under dynamic load may be noise data, but if maximum displacement is required under dynamic load, height data under dynamic load may also belong to the main data category.

Hereinafter, the control method of the load test system will be described in detail. Hereinafter, the same reference numerals as the aforementioned reference numerals denote the same components.

13 is a block diagram showing a control method of the load test system of the present invention, Figure 14 is a flowchart according to the height measurement method of the load test system of the present invention.

13 and 14, the control method (S10) of the load test system includes a height measurement step (S110), a data receiving step (S120), a data processing step (S130), and a data display step (S140). do. The control method (S10) of the load test system relates to the control method of the second embodiment described above.

First, the height measurement step (S110) will be described later as a part overlapping with the position measurement method of the load test system to be described later.

Next, the data receiving step (S120) is a process of receiving the height data for each point set in the height measuring step (S110) to the receiving module.

In the data receiving step (S120), the height data of the set points may be respectively received through the unit receiver of the receiving module.

And, the data processing step (S130) includes a height data extraction step (S131), a height data storage step (S132), a displacement deriving step (S133), and a height data conversion step (S134).

The height data extraction step (S131) extracts the height data provided to each unit port.

The height data storage step (S132) stores the height data extracted by the data extraction unit according to the passage of time for each point or each point. The height data storage step (S132) may be stored separately for displacement according to the dynamic load and static load state for each point. Of course, it is also possible to separately input and store the leg height data in the no-load state, or measure and store the data.

In the displacement deriving step ( S133 ), the displacement may be derived by directly receiving the height data from the laser distance measuring device in real time or by receiving the height data stored in the data storage unit.

For example, the displacement derivation step S133 may derive the displacement between the first data stored in the data storage step S132 , and may derive the displacement between the second data directly transmitted in the data extraction step, or the first data and a displacement between the second data and the second data can be derived. Of course, the displacement deriving step (S133) may also be derived as a graph by comparing and analyzing each data.

In the height data conversion step S134 , when the height data measured in the height measurement step S110 is in mm units, the height data transmitted to the data storage step may be converted into a voltage (V) value. Of course, another conversion step (not shown) may be further provided so that the height data of the voltage value output in the data processing step S130 can be displayed again in mm units. Of course, the height data conversion step (S134) may be optionally omitted.

In the data display step (S140), the height data or displacement derived in the data processing step (S130) may be transmitted and displayed to a personal computer (PC) or portable terminal so that the user can monitor it.

Hereinafter, a method for measuring the height of the load test system will be described in detail.

15A and 15B are block diagrams illustrating a height measurement method of the load test system of the present invention.

10 and 15, the method for measuring the height of the load test system of the present invention (S200) relates to the method for measuring the height of the laser distance measuring device of the first embodiment described above.

The height measurement method (S200) of the load test system of the present invention includes the steps of setting the first point (S210), setting the relative coordinates for the first point (S220), and setting the second point and the second It includes the steps of setting relative coordinates for the point (S230), installing a laser distance measuring device at the second point (S240), and measuring the height of the third point.

First, in the step of setting the first point ( S210 ), a plurality of first points ( S1 ) are set on the upper surface of the leg (BR). At this time, since the displacement of the leg BR may occur greatest in the central region between the pillar P1 and the pillar P2 , a plurality of first points S1 are set in the central region of the leg BR. Since the first point S1 is located on the upper surface of the bridge, absolute coordinates may be set using GPS.

In the step of setting the relative coordinates of the first point (S220), one point separated from the bridge is set as the reference point CP, and the optical waveguide 10 is installed at the reference point CP. In addition, relative coordinates with respect to the first point S1 may be set from the reference point CP. For example, the relative coordinates may be expressed as (x1, y1, z1) coordinates.

The second point S2 corresponds to a point overlapping the ground with the first point S1 on an imaginary vertical line. After setting the second point S2, the step of setting the relative coordinates of the second point from the reference point CP (S230) is performed. The second point S2 is a point that overlaps the first point S1 on an imaginary vertical line, but it is preferable to set the relative coordinates from the reference point CP because an error may occur in setting the coordinates using the GPS under the bridge. . The relative coordinates of the second point S2 may be expressed as (x1, y1, z2).

The step of setting the relative coordinates of the second point (S230) includes the steps of (S231) of the user mounting a reflecting plate in proximity to the first point (S1) on the ground (S231), and measuring the distance using a light wave on the reflecting plate (S232) ) and repeatedly measuring the distance while moving the reflective plate 20 until the reflective plate 20 is positioned at the second point (S233).

That is, in order to set the relative coordinates of the second point S2, the relative coordinates of the first point S1 are set with the optical waveguide 10 disposed at the position of the reference point CP, and then the second point S2 is close to the second point S2. When the user finds a point where the relative coordinates of the first point (S1) and the (x1, y1) coordinates are the same with the optical waveguide (10) while carrying the reflector 20 to the location, the relative coordinates of the second point (S2) can be set. have.

When the position of the second point (S2) is set, the step of arranging the laser distance measuring device (S241) is made. When the second laser (L2) is irradiated through the positioning unit 130 of the laser distance measuring device, and the focus of the second laser (L2) is located at the second point (S2), on the second point (S2) Installation of the laser distance measuring device 100 is completed.

At this time, since the first laser (L1) and the second laser (L2) are arranged to overlap each other on one vertical line, when the first laser (L1) is irradiated, the third point (S3) on the lower surface of the leg (BR) is can be set. However, the step of installing the laser distance measuring device (S240) before irradiating the first laser (L1) toward the third point (S3) is the step of adjusting the horizontal of the laser distance measuring device (S242) and moving in the horizontal direction step (S243) should be accompanied.

For example, even if the second laser (L2) is focused on the second point (S2), if the laser distance measuring device is not horizontal, the third point (S3) may be located in the wrong place. Accordingly, when the position of the second point S2 is set, the process of adjusting the horizontal is performed.

In the step of adjusting the horizontal ( S242 ), it may be confirmed whether the laser module LM is horizontally disposed using the first level 132 and the second level 133 provided on the position setting unit 130 . In the step of adjusting the level (S242), if the level does not indicate the level, the step (S244) of adjusting the height or angle of the support leg 170 may be performed.

The step (S244) of adjusting the height or angle of the support leg may be approximately leveled by adjusting the height adjusting means or the angle adjusting means. In addition, it is possible to precisely adjust the horizontal level using the angle adjusting unit 150 .

The step of adjusting the horizontal (S242) includes the steps of rotating the first rotating member about the first rotating shaft by rotating the first dial 1513 (S2421), and rotating the second dial 1523 to form the first rotating shaft and and rotating the second rotating member about the second vertical axis of rotation (S2422). Therefore, since the first rotational shaft and the second rotational shaft are disposed at right angles to each other, when the step of rotating the first rotational member (S2421) and the step of rotating the second rotational member (S2422) are performed, the step of adjusting the horizontal (S242) ) can precisely adjust the level of the laser module (LM).

And, when the second laser focus is located at the second point S2, and the step of adjusting the horizontal (S242) is performed, the second point S2 and the second laser L2 are again out of focus. do. Accordingly, horizontal movement is required so that the focus of the second laser L2 comes to the second point S2 through the step S243 of moving in the horizontal direction.

The step of moving in the horizontal direction ( S243 ) includes aligning the horizontal moving unit along the first direction ( S2431 ) and aligning the horizontal moving unit along the second direction ( S2432 ).

In the step of aligning the horizontal moving part along the first direction (S2431), the first rotating wheel 1613 is rotated to horizontally move the first transferring member 1611 in the first direction to the second point S2 and the second The focus of the laser L2 may be made closer.

Similarly, the step of aligning the horizontal moving part along the second direction (S2432) is to rotate the second rotation wheel 1623 to horizontally move the second transfer member 1621 in the second direction to the second point S2 and The focus of the second laser L2 may be adjusted to overlap.

In addition, the step of installing the laser distance measuring device (S240) includes a step of correcting the installation height so that the installation height of all the laser distance measuring devices 100 on the ground is the same (S245). The step (S245) of correcting the installation height may be unnecessary in the process of deriving the displacement of one point, but when both the distance and displacement from the ground to the plurality of third points (S3) are required, the ground in a no-load state A process of correcting the height of the support leg so that the distance from the to the third point is equal to the leveling operation or to place the laser distance measuring device on the same virtual horizontal plane may be involved.

Of course, in some cases, the step of correcting the installation height (S245) may be selectively omitted.

Therefore, according to the laser distance measuring device according to the embodiment of the present invention, since the laser distance measuring device is installed on the ground, it is easy to measure the distance no matter how high the target is, and when measuring the distance, it is measured even on a windy day This can be achieved, the irradiation position of the laser module can be precisely adjusted through the positioning unit and the angle adjusting unit, and the level of the laser module can be easily measured through the horizontal measuring unit, and even if the ground is uneven, the By adjusting the angle or length, it is possible to adjust the level of the approximate measurement position, and there is an effect that the height data for each point can be easily transmitted to the outside through the transmitter.

In the above, specific embodiments have been shown and described to illustrate the technical idea of the present invention, but the present invention is not limited to the same configuration and operation as the specific embodiments as described above, and various modifications do not depart from the scope of the present invention. can be carried out within Accordingly, such modifications should be considered to fall within the scope of the present invention, and the scope of the present invention should be determined by the following claims.

100: laser distance measuring device
110: distance measuring unit
120: transmitter
130: position setting unit
140: bracket
150: angle adjustment unit
160: horizontal moving part
170: support bridge
200: receiving module
300: processing module
400: personal computer
10: light wave
1: Load test system
S10: Control method of load test system
S110: height measurement step
S120: data receiving step
S130: data processing step
S140: data display step
S200: Position measurement method of load test system
S210: Step of setting the first point
S220: Step of setting the relative coordinates of the first point
S230: Step of setting the relative coordinates of the second point
S240: Step of installing the laser distance measuring device
S250: Step of measuring the height of the third point

Claims (12)

A height measuring step of measuring the height of the set points of the target through the laser distance measuring device;
a data receiving step of receiving the height data for each point set in the height measuring step to a receiving module; and
a data processing step of deriving the displacement of the target through a processing module based on the data provided in the data receiving step;
The height measurement step is,
A second laser directed in the opposite direction to the first laser is vertically overlapped with the first point on the ground so that the first laser of the laser distance measuring device can be aligned with the first point set on the lower surface of the target. Control method of the load test system, characterized in that aligned toward the point. The method according to claim 1,
The data receiving step is
The control method of the load test system, characterized in that for receiving each of the height data of the set points through the unit receiver of the receiving module. The method according to claim 1,
The data processing step is
extracting the height data of the set points;
storing the height data for each set point;
Comprising the derivation step of deriving the displacement of the target by comparing the first data stored in the step of storing the height data and the second data extracted in the step of extracting the height data, or comparing the second data with each other The control method of the load test system, characterized in that. 4. The method according to claim 3,
The data processing step is
and a conversion step of converting the height data measured in the height measurement step into height data to be recognized in the height data extraction step. The method according to claim 1,
The control method of the load test system, characterized in that it further comprises a data display step of displaying the displacement of the height data derived in the data processing step through the user's personal computer or portable terminal. setting one or a plurality of first points on the upper surface of the target spaced apart from the ground;
setting relative coordinates for the first point from a reference point away from a target using a light wave;
setting a second point overlapping the ground on an imaginary vertical line with the first point, and setting relative coordinates for the second point from the reference point;
installing a laser distance measuring device at the second point; and
Measuring the height of the third point overlapping the first point on the lower surface of the target with the laser distance measuring device;
The step of installing the laser distance measuring device is aligned so that the first laser of the laser distance measuring device is irradiated to the second point so that the second laser directed in the opposite direction to the first laser is irradiated to the third point. To measure the height of the load test system, characterized in that it comprises the step of arranging the laser distance measuring device. 7. The method of claim 6,
Setting the relative coordinates of the second point comprises:
A step of a user mounting a reflector in proximity to the first point on the ground;
Measuring a distance using a light wave to the reflector;
Method for measuring the height of the load test system, characterized in that it comprises the step of repeatedly measuring the distance while moving the reflector until the reflector is located at the second point. 7. The method of claim 6,
The step of installing the laser distance measuring device,
adjusting the level of the laser distance measuring device;
The method of measuring the height of the load test system, characterized in that it comprises the step of moving in the horizontal direction so that the second laser is irradiated to the second point. 9. The method of claim 8,
The step of disposing the laser distance measuring device,
The height measurement method of the load test system, characterized in that it comprises the step of adjusting the height and angle of the support leg of the laser distance measuring device. 9. The method of claim 8,
The step of adjusting the horizontal is,
rotating the first dial to rotate the first rotating member about the first rotating shaft in a set angle range;
A method for measuring the height of a load test system, comprising rotating a second dial to rotate a second rotating member in a set angle range about a second rotating axis perpendicular to the first rotating axis. 9. The method of claim 8,
The step of moving in the horizontal direction,
aligning the horizontal moving unit along a first direction formed on a virtual horizontal plane;
The method for measuring the height of a load test system, characterized in that it comprises the step of aligning the horizontal moving part along the second direction orthogonal to the first direction and the virtual horizontal plane. 9. The method of claim 8,
The step of installing the laser distance measuring device,
Height measuring method of the load test system, characterized in that it comprises the step of correcting the installation height of the laser distance measuring device so that the height of all the second points corresponding to the third point on the ground is the same.

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