CN215373876U - Reusable three-dimensional laser scanning target - Google Patents
Reusable three-dimensional laser scanning target Download PDFInfo
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- CN215373876U CN215373876U CN202121675374.5U CN202121675374U CN215373876U CN 215373876 U CN215373876 U CN 215373876U CN 202121675374 U CN202121675374 U CN 202121675374U CN 215373876 U CN215373876 U CN 215373876U
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- dimensional laser
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Abstract
The utility model provides a reusable three-dimensional laser scanning target, which comprises a target (1), a magnetic part (2) and a base (3); the target (1) is of a hollow triangular pyramid structure and comprises an identification surface (1.1), a supporting surface (1.2) and a bottom surface (1.3), wherein the identification surface (1.1) is used for being identified by a three-dimensional laser scanner, and the supporting surface (1.2) is used for supporting the identification surface (1.1); the bottom surface (1.3) is used for being connected with the base (3) through the magnetic part (2), when needing to be used with the cooperation of three-dimensional laser scanner, the target (1) is connected with the base (3) through the magnetic part (2) to be convenient for the scanning of three-dimensional laser scanner, when need not to scan temporarily, take off the target (1), and locate on the base (3) with protection piece (4) cover, in order to protect the base (3), thereby realize the used repeatedly of target (1) in tunnel construction.
Description
Technical Field
The utility model relates to the technical field of measuring targets, in particular to a reusable three-dimensional laser scanning target applied to a tunnel construction process.
Background
Existing three-dimensional laser scanning targets can be roughly classified into three categories, namely, planar targets, spherical targets and spherical prisms. Since it is difficult to directly measure the geometric center of the ball target using a total station, the ball target is generally used only for stitching between scanning stations. The planar target is convenient for the total station and the scanner to measure but is not convenient to move, so the planar target is generally only used for splicing the total station and the scanner. The spherical prism has the advantages of the two targets, can be used for splicing scanning stations and total stations and scanners, and limits the actual measuring distance of the scanners due to the small size of the spherical prism.
When a scanner is used for engineering safety monitoring, some targets need to be fixed to be used as control targets, the reference of each measurement is unified, and the variation of each measurement is obtained. It is also sometimes necessary to measure the control target with a high precision total station to determine its reliability and to obtain the changed position of the monitoring body. In the prior art, a reusable target for three-dimensional laser scanning that satisfies the above requirements has not been found yet.
The existing three-dimensional laser scanning target for engineering safety monitoring is easy to damage, has no protective measures and cannot be reused. For example, in the tunnel monitoring measurement, a plurality of stations are fixed in the direction of the axis of the tunnel, the fixed points are periodically measured, then data are imported into a computer, and the computer splices a tunnel model through denoising, rarefying and filtering miscellaneous point processing. And then the data difference of the fixed points is compared, so that the deformation and displacement conditions of the tunnel are judged, and a basis is provided for construction safety. However, in the construction process, since the target is fixed on the inner wall of the tunnel, the construction machinery such as an excavator can destroy the target inadvertently during the operation, so that the data measured by the original fixed point can lose the comparison standard, and even all the measured data at the early stage can be wasted; or, the precision requirement of tunnel point cloud splicing on the measured data is millimeter level, and the accuracy of the measured data is greatly influenced when tunnel mud, dust and the like fall on the surface of the target.
Therefore, the design of the target which is convenient to install and disassemble, does not influence the measurement data and cannot be interfered by external factors has important significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a reusable three-dimensional laser scanning target applied to a tunnel construction process aiming at the defects of the prior art.
In order to achieve the purpose, the utility model provides a reusable three-dimensional laser scanning target, which comprises a target, a magnetic part and a base; the target is of a hollow triangular pyramid structure and comprises an identification surface, a supporting surface and a bottom surface; the identification surface is used for the three-dimensional laser scanner to identify; the supporting surface is used for supporting the identification surface; the bottom surface is used for being detachably connected with the base through the magnetic piece.
Preferably, the magnetic member is further provided with a first mounting groove which is arranged in a penetrating manner.
Preferably, the base is further provided with a boss clamped in the first mounting groove, and the structure of the boss is consistent with that of the groove.
Preferably, the cross section of the target is set to be an isosceles triangle or an equilateral triangle, and the included angle between the identification surface and the bottom surface is set to be one of 30 degrees, 45 degrees and 60 degrees.
As a further scheme of the utility model: the identification surface is provided with a pattern marking area and a coding marking area; the pattern marking area is set to be a color block structure with low-reflectivity parts and high-reflectivity parts distributed alternately and used for being identified by a three-dimensional laser scanner; the code marking area is arranged below the pattern marking area and is used for marking the corresponding codes so as to distinguish and manage the targets in the measurement.
Preferably, the pattern marking area is formed by laser silk screen printing.
As a further scheme of the utility model: and a groove for mounting the magnetic part is also formed in the bottom end face of the bottom face.
As a further scheme of the utility model: the magnetic member is made of neodymium magnet.
As a further scheme of the utility model: the base sets up to back taper structure, and its periphery all sets up to the circular arc structure.
As a further scheme of the utility model: the utility model also comprises a protection piece, wherein the protection piece is sleeved on the base and used for protecting the base.
Preferably, the protection member is made of a PC material.
Compared with the prior art, the utility model has the following beneficial effects:
in addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is an axial schematic view of a target of the present invention;
FIG. 3 is a schematic bottom view of a target of the present invention;
FIG. 4 is an axial view of the magnetic member of the present invention;
FIG. 5 is an axial view of the base of the present invention;
FIG. 6 is a cross-sectional view of the base and protector assembly of the present invention;
FIG. 7 is a front sectional view of the protector of the present invention.
Wherein:
1. target, 1.1, identification face, 1.11, pattern mark district, 1.12, code mark district, 1.2, holding surface, 1.3, bottom surface, 1.31, recess, 2, magnetic force spare, 2.1, first mounting groove, 3, base, 3.1, boss, 3.2, first mounting hole, 4, protection piece, 4.1, second mounting groove, 4.2, second mounting hole.
Detailed Description
Embodiments of the utility model will be described in detail below with reference to the drawings, but the utility model can be implemented in many different ways, which are defined and covered by the claims.
In order to make the aforementioned objects, features, advantages, and the like of the present invention more clearly understandable, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the drawings of the present invention are simplified and are not to precise scale, and are provided for convenience and clarity in assisting the description of the embodiments of the present invention; the several references in this disclosure are not limited to the particular numbers in the examples of the figures; the directions or positional relationships indicated by ' front ' middle, ' rear ' left ', right ', upper ', lower ', top ', bottom ', middle ', etc. in the present invention are based on the directions or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction, nor should be construed as limiting the present invention.
The utility model discloses a:
referring to fig. 1, the reusable three-dimensional laser scanning target provided by the utility model comprises a target 1, a magnetic member 2 and a base 3;
the target 1 is of a hollow triangular pyramid structure and comprises a marking surface 1.1, a supporting surface 1.2 and a bottom surface 1.3; the identification surface 1.1 is used for the identification of a three-dimensional laser scanner; the supporting surface 1.2 is used for supporting the marking surface 1.1; bottom surface 1.3 are used for being connected with base 3 through magnetic force spare 2, when need carry out and three-dimensional laser scanner cooperation use, target 1 is connected with base 3 through magnetic force spare 2, when need not to scan temporarily, takes off target 1 and magnetic force spare 2 to realize the used repeatedly of target 1 in same tunnel construction section.
Preferably, the base 3 is installed on the inner wall of the tunnel through a bolt, and a plurality of bases 3 are arranged on the same tunnel construction section, so that the target 1 and the magnetic member 2 are installed on the corresponding base 3 as required.
Referring to fig. 2 and 3, the target 1 is configured as a hollow triangular pyramid structure with a cross section of an isosceles triangle or an equilateral triangle, and includes a mark surface 1.1, a support surface 1.2, and a bottom surface 1.3, and an angle between the mark surface 1.1 and the bottom surface 1.3 is set to be 30 °, 45 °, or 60 °, so that no matter how the three-dimensional laser scanner is placed, the incidence angle of laser can be guaranteed to be 30 ° or more, and the scanning accuracy of the three-dimensional laser scanner can be improved by increasing the incidence angle.
Preferably, the marking surface 1.1 is provided with a pattern marking area 1.11 and a coding marking area 1.12; the pattern marking area 1.11 is set as a color block structure with alternately distributed low-reflectivity parts (black) and high-reflectivity parts (white) and is used for being identified by a three-dimensional laser scanner; the code marking area 1.12 is arranged below the pattern marking area 1.11 and is used for marking one or more combinations of numbers, letters and Chinese characters so as to distinguish and manage targets in measurement.
Preferably, the bottom end face of the bottom face 1.3 is further provided with a groove 1.31 for mounting the magnetic member 2.
Preferably, the pattern marking area 1.11 is formed by laser silk-screen printing, so that the pattern is not easy to fall off and is clearly visible.
Referring to fig. 4, a first mounting groove 2.1 is further formed in the magnetic member 2, and a cross section of the first mounting groove 2.1 is identical to a cross section of a boss 3.1 formed in the base 3, so that the boss 3.1 is clamped in the first mounting groove 2.1, and the magnetic member 2 is connected with the base 3.
Referring to fig. 5, the base 3 is configured as an inverted cone structure, and the circumference of the base is configured as an arc structure, so as to prevent unnecessary scratches caused by too sharp edges during installation.
Preferably, the base 3 is further provided with a boss 3.1 and a first mounting hole 3.2, and the first mounting hole 3.1 is used for being connected with the inner wall of the tunnel through a bolt.
Referring to fig. 6 and 7, in order to protect the base 3 without the target 1 and the magnetic member 2, the present invention further includes a protection member 4, wherein the protection member 4 is sleeved on the base 3 to protect the base 3 from being damaged by dust, slurry, or falling rocks in a tunnel, so that the detection data is not interfered by the outside, and the accuracy of the measurement is ensured.
Preferably, the protection member 4 is further provided with a second mounting groove 4.1 for mounting the base 3 and a second mounting hole 4.2 for connecting the first mounting hole 3.1 and the inner wall of the tunnel through a bolt.
Preferably, the protection member 4 is made of a PC material, has the characteristics of light weight, wear resistance and good toughness, and can protect the base 3 from being damaged by dust, mud adhesion or tunnel falling rocks, so that the detection data is not interfered by the outside, and the measurement accuracy is ensured.
The specific steps of the detection by matching the three-dimensional laser scanner are as follows:
step 1, respectively installing a base 3 on different positions of the inner wall of a tunnel according to actual detection requirements;
and 3, after the detection is finished, taking down the target 1 and the magnetic member 2, and sleeving the protection member 4 on the base 3 to protect the base 3.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A three-dimensional laser scanning target that repeatedly usable characterized in that: comprises a target (1), a magnetic part (2) and a base (3);
the target (1) is of a hollow triangular pyramid structure and comprises an identification surface (1.1), a supporting surface (1.2) and a bottom surface (1.3); the identification surface (1.1) is used for the identification of a three-dimensional laser scanner; the supporting surface (1.2) is used for supporting the identification surface (1.1); the bottom surface (1.3) is detachably connected with the base (3) through the magnetic piece (2).
2. The three-dimensional laser scanning target according to claim 1, wherein: the magnetic piece (2) is also provided with a first mounting groove (2.1) which is arranged in a penetrating way;
the base (3) is further provided with a boss (3.1) clamped in the first mounting groove (2.1), and the structure of the boss (3.1) is consistent with that of the groove (2.1).
3. The three-dimensional laser scanning target according to claim 1, wherein: the cross section of target (1) sets up to isosceles triangle or equilateral triangle, just the contained angle between identification face (1.1) and bottom surface (1.3) sets up to one of 30 °, 45 ° and 60 °.
4. The three-dimensional laser scanning target of claim 3, wherein: a pattern marking area (1.11) and a coding marking area (1.12) are arranged on the marking surface (1.1);
the pattern marking area (1.11) is set to be a color block structure with low-reflectivity parts and high-reflectivity parts distributed at intervals and is used for being identified by a three-dimensional laser scanner;
the code marking area (1.12) is arranged below the pattern marking area (1.11) and is used for distinguishing and managing the target in the measurement by marking the corresponding code.
5. The three-dimensional laser scanning target of claim 4, wherein: the pattern marking area (1.11) is formed by laser silk-screen printing.
6. The three-dimensional laser scanning target according to claim 1, wherein: and a groove (1.31) for mounting the magnetic piece (2) is also arranged on the bottom end surface of the bottom surface (1.3).
7. The three-dimensional laser scanning target according to claim 1, wherein: the magnetic part (2) is made of neodymium magnets.
8. The three-dimensional laser scanning target according to claim 1, wherein: the base (3) is arranged to be of an inverted conical structure, and the periphery of the base is arranged to be of an arc structure.
9. The three-dimensional laser scanning target according to any one of claims 1-8, wherein: the protective device is characterized by further comprising a protective piece (4), wherein the protective piece (4) is sleeved on the base (3) and used for protecting the base (3).
10. The three-dimensional laser scanning target according to claim 9, wherein: the protection piece (4) is made of PC material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121675374.5U CN215373876U (en) | 2021-07-22 | 2021-07-22 | Reusable three-dimensional laser scanning target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121675374.5U CN215373876U (en) | 2021-07-22 | 2021-07-22 | Reusable three-dimensional laser scanning target |
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| Publication Number | Publication Date |
|---|---|
| CN215373876U true CN215373876U (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121675374.5U Active CN215373876U (en) | 2021-07-22 | 2021-07-22 | Reusable three-dimensional laser scanning target |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810743A (en) * | 2022-04-15 | 2022-07-29 | 中铁山桥集团有限公司 | Regular polyhedron equipment for laser scanning identification and construction method thereof |
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2021
- 2021-07-22 CN CN202121675374.5U patent/CN215373876U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810743A (en) * | 2022-04-15 | 2022-07-29 | 中铁山桥集团有限公司 | Regular polyhedron equipment for laser scanning identification and construction method thereof |
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