KR20140039017A - The three dimension displacement measuring device - Google Patents

The three dimension displacement measuring device Download PDF

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Publication number
KR20140039017A
KR20140039017A KR1020140025515A KR20140025515A KR20140039017A KR 20140039017 A KR20140039017 A KR 20140039017A KR 1020140025515 A KR1020140025515 A KR 1020140025515A KR 20140025515 A KR20140025515 A KR 20140025515A KR 20140039017 A KR20140039017 A KR 20140039017A
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South Korea
Prior art keywords
axis
center
angle
fixed
measurer
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KR1020140025515A
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Korean (ko)
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KR101391885B1 (en
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백훈현
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주식회사백상
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/04—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B5/043—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring length
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
    • G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
    • G01B5/066—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness of coating
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B5/245—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing perpendicularity

Abstract

The present invention relates to an apparatus for evaluating a three-dimensional displacement, which evaluates a three-dimensional line segment of a spatial coordinate system that meets at right angles to each other by measuring angles and distances, and is provided with an arbitrary fixed point whose position does not change, A fixed center which does not change its position, and a movable center which is provided at the other end which freely moves the centers of the two ends of the fixed center. The length measurer is configured to coincide with the x-axis and the axis center between the moving center and the fixed center, and the first angle measurer and the second angle measurer are configured to coincide with the y-axis and the z-axis respectively at the fixed center. and a three-axis integrated device centered on a fixed center where the x-axis, the y-axis, and the z-axis meet. The three-axis integrated device includes an angle measuring means. Thus, the present invention relates to a three-dimensional displacement measuring device capable of measuring an angle and a length directly at a three-axis intersection point without using joints between the sensors by providing only the length measuring device that is linear between the three-axis integrated device and the moving center.

Figure pat00001

Description

[0001] The Three Dimension Displacement Measuring Device [

The present invention relates to a three-dimensional displacement measuring device for measuring the amount of movement of a specific point in a moving object by attaching a sensor capable of measuring a length and an angle between a moving structure and a non- .

In the background technology of the present invention, when there is a possibility of movement, deformation, or occurrence, actual measurement is made using a diagonal measuring the vertex of one hexahedron as the origin, and the three-dimensional line value is measured by measuring the angle formed by the diagonal and three axes. Background Art A conventional three-dimensional displacement measuring apparatus for calculating a is a background art.

As a prior art reference to a three-dimensional displacement meter related to the present invention, Korean Patent Registration No. 10-0655925 (registered on Dec. 04, 2006) entitled " 3-dimensional displacement meter for high- Discloses an apparatus and a method for three-dimensionally measuring the deformation amount of a facility such as a power generation pipe by using two encoders for measuring a vertical angle and a plane angle and a displacement sensor for measuring a distance. 10-0553410 (registered Feb. 10, 2006) " Three-axis displacement measuring apparatus and monitoring system of piping " discloses a concrete apparatus and method for applying the above-mentioned patent to piping.

The present invention relates to a three-dimensional displacement measuring apparatus according to the related art, in which the sensors for measuring changes in three axes are not located at the same axis, , There are many joints between the sensors. Therefore, there are many joints in the structure of the product. Therefore, there is a high possibility that the sensor is further deformed due to external force in a state where it is installed on the field. It is difficult to visually confirm the actual three-dimensional angle at the installation site, so that it is difficult to easily grasp whether or not the instruction value indicated through the computer coincides with the state of the user. In particular, in the case of a measuring apparatus for connecting a sensor using a joint as shown in FIG. 3 (1), the error caused by the mechanical structure of the joint in addition to the error of the sensor is added to the error of the previous sensor, The more you use it, the lower the measurement accuracy and accuracy. In the case of (2) in FIG. 3, the sensor 1 and the sensor 2 are connected by a hinge. The output of the sensor 2 depends on the error of the sensor 2 itself and the error of the mechanical structure indicated by the sensor 1, The error range becomes larger by adding the error. In this state, the error of the sensor 2 is added to the error of the sensor 1, and the mechanical error of the joint 1 and the joint 2 is added to the error of the sensor 3 when the error of the sensor 3 is amplified. The present invention eliminates the structure for connecting other sensors to the sensor, and when the position of the sensor is measured in three dimensions, one end of the diagonal portion of the hexahedron, which is the vector sum of each segment, and the diagonal itself are used as the length sensors, It is possible to increase the measurement accuracy of the measuring device and to prevent the deformation caused by the looseness of the joint part due to long-term use from further lowering the measurement accuracy, to reduce the number of members to be used, do. 1, which is one embodiment of the present invention, and FIG. 3, which is an example of the conventional technique, it can be seen how much the number of used members and the number of used joints are remarkably formed.

In the present invention, the three-dimensional displacement is expressed as one length and two angles, and the length and angle of the measurement sensor are made to coincide with each other at the center point so that the respective values for one length and two angles correspond to the physical shape of the measuring device So that the length and angle appearing in real time can be achieved only through vector summing, thereby solving the above-mentioned problem to be solved.

As a result of the present invention, reliability after long-term operation after installation of a three-dimensional displacement meter installed in the field and measurement accuracy of the equipment itself have been remarkably improved. Of course, the cost reduction and the reduction of the construction cost due to the decrease of the number of devices can further enhance the competitiveness of the industry in this field. In addition, reliability of facility management can be improved through visual inspection of the amount of three-dimensional deformation.

Brief Description of the Drawings Fig. 1 is a view showing an embodiment of a three-
FIG. 2 is a view showing an embodiment of a three-dimensional strain measuring apparatus according to the present invention
Figure 3 is a schematic diagram of an embodiment of a device according to the prior art relating to the present invention
FIG. 4 is a diagram illustrating an embodiment (including a concept) of a three-
FIG. 5 is a diagram showing an example of a three-axis integration device according to the present invention
6 is a view showing an example of a central hexahedron according to the present invention

The present invention relates to an apparatus for measuring and evaluating three-dimensional displacements for evaluating three-dimensional line segments of x, y and z in a spatial coordinate system measuring angles and distances and intersecting at right angles with each other. The three-dimensional space according to the present invention is defined as a global coordinate system in which a fixed origin as a reference and an x, y, and z axis with respect to the origin are set as a global coordinate system. A plurality of three- When the values of the three-dimensional line segments obtained from the sensors of the plurality of three-dimensional displacement measuring apparatuses are used as the line segment values by the local coordinate system, the three-dimensional axis of the local coordinate system is generally matched with the axis of the global coordinate system, So that displacement values obtained from a plurality of three-dimensional displacement measuring apparatuses can be uniformly evaluated with respect to the inspection object such as one mechanical device. The x, y, and z axes can be set in any direction, but in the present invention, the plane parallel to the water surface set in the global coordinate system is defined as y and z axes, and the axis oriented toward the center of the earth is defined as x axes. However, in the practice of the present invention, there is no problem even if the x axis is a horizontal axis on the water surface or the axis is not horizontal or vertical on the water surface. However, in order to unify the detailed description of the present invention Thus, the axial direction is set. For easier understanding, in the present invention, the vertical axis toward the center of the earth, i.e., the x axis coincides with the axis center of the length measurer 10, is called the length axis, and the axis of the plane perpendicular to the length axis, i.e., the y axis and the z axis It is called an axis. In practicing the present invention, there is no problem even if the y-axis and the z-axis are cross-expressed.

The present invention measures any angle and distance and obtains a three-dimensional displacement that is evaluated by three-dimensional line segments of the x-axis 11, y-axis 21, and z-axis 31 of the spatial coordinate system. The fixed point 61 of the fixed point, the fixed center 51 does not change the position at any distance from the fixed point, the plane axis coincident with the center of the fixed plane, the plane angle meter that rotates while coinciding with the plane axis, One end rotates while the fixed center and the end center coincide with each other, the length measurer 10 whose axis center coincides with the length axis, the moving center 41 fixed at an arbitrary position of the object to be measured, and the other end of the length measurer It includes a moving part bearing 11 that rotates while coinciding with the movement center and the end center, characterized in that it comprises a three-axis integrated device 50 that can be mounted and rotated while the planar angle measurer coincides with the fixed center So Without the joint epistle, to a three-dimensional displacement measuring device for directly measuring the angle and length of the three-axis crossing. The planar angle measurer refers to the first angle measurer 20 and the second angle measurer 30 by measuring rotation angles of the y and z axes. In general, the fixing point 61 is a place where the device according to the present invention is attached to the building, and the moving center 41 is a device according to the present invention. Refers to the center of the attached point. The end of rotation is a structure that can rotate because there is a bearing at the end.

The present invention can be applied to any fixed point whose position does not change, a fixed center (51) whose position does not change at a fixed distance from the fixed point, a fixed center (51) (41). Between the moving center and the fixed center, the length measurer 10 is configured such that the x axis 11 and the axis center coincide, and the first angle measurer 20 and the second angle measurer 30 correspond to the y axis 21 at the fixed center. And z-axis 31, respectively. and a three-axis integration device (50) centered on a fixed center where the x-axis meets the y-axis and the z-axis, the three-axis integration device including angle measuring means. Thus, a three-dimensional displacement measuring device and a displacement measuring method including only the length measuring device that is linear between the three-axis integrated device and the moving center and can measure angles and lengths directly at three-axis intersections without using joints between the sensors. It is about.

Here, the measurement of the displacement is not limited to the displacement only. It is possible to measure the length of the three-dimensional object by using one piece of equipment according to the present invention. In the present invention, It also includes a three-dimensional length. Therefore, in the present invention, the displacement includes the changed length, the unchanged length in addition to the expression of the changed three-dimensional coordinates, and the expression of unchanged three-dimensional coordinates.

The triaxial integration device 50 has a central hexahedron 52 centered on a fixed center 51 as shown in FIGS. 4 and 5, the y-axis from the fixed center to the outside of the central hexahedron, z Y-axis pins (yp), z-axis pins (zp), y-axis pins and z-axis pins integrated into the central hexahedron so as to coincide with the axes, the outer surface of the first and second angular surfaces of the central hexahedron A first angle case 53 and a second angle case 54 having a U-shape surrounding each other, including angle measuring means provided inside or outside the central hexahedron, the bottom of the first angle case is the length measurer 10 Is connected to the top of the, the top of the second angle case is connected to the stator 60. The provision of the angle measuring means inside the central hexahedron is advantageous in that the inclined sensor is placed in the inner space iV of the central hexahedron as shown in one embodiment in FIG. 6 or a y-axis pin And the axis of the encoder is coupled to the z-axis pin, and the case having the coil of the encoder is fixed to the first angle case and the second angle case, whereby the angle can be electrically measured.

5, a separator is attached to the outer surface of the first angle case and the second angle case, and an angle guide is attached to the y-axis pin and the z-axis pin, and y, z The angle of the two planes of the axis can be measured. In this way, the apparatus according to the present invention can evaluate the accuracy of the output value of the device by evaluating the electrical state value indicated by the sensor by the naked eye without any electrical method, and the accuracy of the output value of the device can be evaluated by the user.

In the present invention, the common junction point where the x, y and z axes, which are the spatial coordinate axes, meet at one point is called the fixed center 51, and the length of one axis (in the present invention, the x axis is taken as an example) in which the axis center line coincides from the fixed center. With the length measuring instrument 10 as an axis, an inclination sensor for measuring the inclination of a plane where two axes (in the present invention, y and z axes) meet at right angles to this length axis is used, or the rotation angle of the two axes is measured. An encoder to measure is used to configure a first angle measurer 20 (in the present invention, the y-axis as an example) and a second angle measurer (in the present invention, the z-axis is an example).

When the distance between two points changes, the distance between these two points is calculated as the length of each side of a 3-dimensional line segment, that is, a rectangle based on a 3-dimensional axis, with one point as the origin of the basic coordinate system It is a three-dimensional displacement meter. To do this, we can calculate the three-dimensional axis segments by knowing the distance vector between two points and the angle between each axis and the distance vector. Accordingly, in the present invention, the length vector uses a length measurer, and the angle measurement uses a tilt sensor or an encoder.

Two points must be free to rotate three-dimensionally in order to allow two points to move freely in three dimensions with two points in between. In addition, these two points must be connected as a single rod to become an industrially measurable three dimensional measuring device. It should be a bar structure with both ends free to rotate, and at least one end to measure the angle between the fixed space axis and the rod. To do this, a method should be developed that can measure at least two angles of a rotating rod while maintaining a fixed center point at one end of the rod.

For this purpose, the present invention sets the fixed center 51 at a fixed center point, and the fixed center is set at the intersection point where the x, y, and z axes meet. The fixed center must be located at one point of the spatial coordinates based on a fixed space such as a building or a factory, so it must be installed to be fixed to a building or the like. To accomplish this, the fixed center of gravity must be fixed to the frame (H-beam, etc.) of the building, and this may be accomplished by a technique of fastening or fixing the mechanical device to a building or a large machine.

In order to measure the rotation angle of a rod with a center point being fixed to a building with reference to the center point, proceed as follows. A fixing center 51 is provided at the center of the central hexahedron 52 as shown in FIG. 4 (2), and two y-axis pins and two z-axes are disposed at a position where the three axes passing through the fixing center meet with the outer surface of the central hexahedron. Like structure having a pin integrally formed with a central hexahedron by a mechanical method such as welding and including a hinge that rotates about the axis is used as a first angle case 53 and a second angle case 54, Assemble to the outside of the center hexahedron. The upper end of the length measurer 10 and the lower end of the stator 60 are joined to the plate without the hinge of the first angle case and the second angle case, respectively. Fig. 4 (1) shows a partially assembled state for the detailed implementation of the present invention in a state in which the second angle case is not assembled. Also, the z-axis pin (zp) shown here is also a partially assembled state in which the pins are not assembled. The stator is a structure that connects a fixed point 61 and a fixed center 51 joined to a building or the like. As shown in Fig. 2 (2), a normal pipe, a round bar or a pipe is used. The adjustable structure makes it convenient to install in the field.

When an encoder is provided which has a bi-directional inclination sensor coinciding with a fixed center inside the central hexahedron or in which an y-axis pin and a z-axis pin are relatively moved with respect to the first angle case and the second angle case, It is possible to measure the inclination of the plane formed. The outer surface of the central hexahedron is constituted by a first angular surface 1S and a second angular surface 2S as illustrated in Fig. 4 (2) Pin and z-axis pins. In this case, the center hexahedron and the y-axis pin and the z-axis pin operate at the same rotation angle.

The y-axis pin (yp) and the z-axis pin (zp) illustrated in Fig. 5 are in a state in which a bolt head is shown for fixing the angle lead, which is seen in the shape of a hoe, to the y- and z-axis pins using bolts. 5, it can be seen that the separator is bonded to the first angle case and the second angle case.

The length measurer is a structure having a shaft that slides in the case in general, but when it is installed to be inclined, the length measurer according to the present invention is reduced because the bending occurs on the shaft, which is not good for the life of the device and the measurement accuracy of the device is also reduced. As shown in Fig. 2, three to three deflection prevention reinforcement shafts parallel to the sliding motion axis are placed outside the case of the length measurer to prevent the deflection, thereby increasing accuracy. Similarly, the stator may be manufactured by using three small cross-section members in order to increase the cross-sectional secondary moment rather than using a straight structure having a single structure. This means that three small linear pipes can be arranged in a regular triangular cross-section so that they can be connected to each other to form the same structure. This is a technology related to the prevention of deflection of mechanical engineering.

Since the planar angle measurer and the length measurer are electronic devices, an electrical signal is output. This electrical data is transmitted in real time from the length gauge and the planar angle measurer. Each three-dimensional displacement measuring device has a microcontroller that can transmit, receive, evaluate, analyze, store, and retransmit the input data. It can be attached every time, placed around the device, or collected in a data logger for processing by a central processing computer. With a central processing computer, a microcontroller is no longer needed. The data storage means using the microcontroller may use a small data storage memory such as an SD card.

The input data is transmitted, received, evaluated, and analyzed. The input data is processed by a microcontroller or a computer. When the input data is input in real time, the input data is compared with the average value obtained by averaging the input data for a certain period. In the case where there is a specific matter such as being equal to or more than a predetermined value, it is stored in a memory with a separate file name. Since such data can not be stored continuously in one limited memory and continuously input in real time, The file is stored in the first-in first-out manner within the storage capacity range of the first-in first-

A method of measuring the three-dimensional displacement using such a device is as follows.

Three-dimensional displacement measuring method according to the present invention by measuring the angle and distance three-dimensional displacement to evaluate the three-dimensional line segments of the x-axis (11), y-axis (21), z-axis (31) of the spatial coordinate system perpendicular to each other As a technique in the field of evaluating, any fixed point 61 whose position does not change, a fixed center 51 whose position does not change at a certain distance from the fixed point, and a set of axis centers in the fixed center Configuring the length measurer 10 to coincide with the x-axis 11 and the axis center between the moving center and the fixed center based on a device including a moving center 41 provided at the other end of free movement. And configuring the first angle measurer 20 and the second angle measurer 30 so as to coincide with the y-axis and the z-axis, respectively, in the fixed center, where the x-axis, the y-axis, and the z-axis meet. Center to form 3-axis integrated device 50 It consists of the steps of.

10: length measurer
20: First angle measurer
30: 2nd angle measurer
50: 3-axis integrated device
60: stator
41: shift center
51: Fixed center
61: Fixed point

Claims (5)

In order to obtain a three-dimensional displacement in which an angle and a distance are measured and evaluated by a three-dimensional line segment of the x-axis 11, y-axis 21 and z-axis 31 of the spatial coordinate system,

An arbitrary fixed point 61 whose position does not change;
A fixed center (51) whose position does not change at a certain distance from the fixed point;
A planar axis coinciding with the fixed center;
A planar angle meter which rotates while the plane axis and the axis center coincide;
A length measurer 10 having one end rotating while the fixed center and the end center coincide with each other, and the axis center coinciding with the length axis;
A moving center (41) fixed at an arbitrary position of the object to be measured;
And a moving part bearing 11 rotating while the moving center and the end center coincide with the other end of the length measurer.

It characterized in that it comprises a three-axis integrated device 50 that can be mounted and rotated while the fixed center and the center coincide with the planar angle measurer

Three-dimensional displacement measuring device that measures angles and lengths directly at three-axis intersections without using joints between sensors The apparatus as claimed in claim 1, wherein the three-axis integration device (50)

A center hexahedron 52 centering on the fixed center 51;
Y-axis pins (yp) and z-axis pins (zp) integrated with the central hexahedron to coincide with the y-axis and z-axis from the fixed center to the outside of the central hexahedron;
A c-shaped first angle case 53 and a second angle case 54 which are assembled to the y-axis pin and the z-axis pin by a hinge and surround outer surfaces of the first and second angle surfaces of the central hexahedron;
Including; angle measuring means provided inside or outside the central hexahedron

The lower end of the first angle case is connected to the upper end of the length measurer 10, the upper end of the second angle case is characterized in that it is connected to the stator 60,

Three-dimensional displacement measuring device that measures angles and lengths directly at three-axis intersections without using joints between sensors The apparatus as claimed in claim 2, wherein the three-axis integration device (50)

Wherein a separator is attached to the outer surface of the first angle case and the second angle case and further includes an angle guide to the y axis pin and the z axis pin,

Three-dimensional displacement measuring device that measures angles and lengths directly at three-axis intersections without using joints between sensors The method according to claim 1,

And a microcontroller capable of transmitting, receiving, evaluating, analyzing, storing, and retransmitting data input in real time from the length measurer and the planar angle measurer in real time.

Three-dimensional displacement measuring device that measures angles and lengths directly at three-axis intersections without using joints between sensors 5. The method of claim 4,

The evaluation is performed by comparing the instant input value of the input data with an average value obtained by averaging the input data for a certain period of time,
The storage may further include storing data input in real time in a first-in first-out manner,

Three-dimensional displacement measuring device that measures angles and lengths directly at three-axis intersections without using joints between sensors
KR1020140025515A 2014-03-04 2014-03-04 The Three Dimension Displacement Measuring Device KR101391885B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105797405A (en) * 2016-04-15 2016-07-27 马同金 Space coordinatometer toy
WO2021232220A1 (en) * 2020-05-19 2021-11-25 深圳元戎启行科技有限公司 Distance measurement apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101629843B1 (en) * 2014-08-19 2016-06-13 주식회사 바이텍코리아 Lattice type apparatus for measuring displacement of ground

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007315815A (en) 2006-05-23 2007-12-06 Kyowa Electron Instr Co Ltd Three-dimensional displacement measuring system
KR101229717B1 (en) 2011-06-30 2013-02-04 주식회사백상 3-Dimensional Displacement Measuring Device
KR101116563B1 (en) 2011-08-08 2012-03-07 주식회사백상 Rope Type 3-Dimensional Displacement Measuring Device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105797405A (en) * 2016-04-15 2016-07-27 马同金 Space coordinatometer toy
WO2021232220A1 (en) * 2020-05-19 2021-11-25 深圳元戎启行科技有限公司 Distance measurement apparatus

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