Three-dimensional scanner precision test standard device

Abstract

The utility model discloses a three-dimensional scanner precision test standard device. The three-dimensional scanner precision test standard device comprises a base, an elevation detection standard device, a length detection standard device and a flatness detection standard device. The elevation detection standard device comprises a plurality of elevation detection surfaces, a preset height difference exists between every two adjacent elevation detection surfaces, the length detection standard device comprises at least two mark points, the mark points are at least distributed at the two ends of one elevation detection surface in the extension direction of the elevation detection surface, and a preset length value exists between the mark points located on the same elevation detection surface. The flatness detection standard device comprises a first detection standard device and a second detection standard device, the first detection standard device comprises a first detection surface, the first detection surface is parallel to the elevation detection surface, the second detection standard device comprises a second detection surface, and an included angle larger than 0 degree and smaller than 180 degrees is formed between the second detection surface and the elevation detection surface. Through the arrangement, the measurement precision of the three-dimensional scanner can be detected.

Description

Technical Field

[0001] This application relates to the field of three-dimensional scanning technology, and in particular to a three-dimensional scanner accuracy inspection standard device. Background Art

[0002] A three-dimensional scanner is a device that generates a digital three-dimensional model of an object to be measured through non-contact measurement technology (such as optical three-dimensional scanning) or contact measurement technology.

[0003] Under different usage conditions, the optical characteristics of the three-dimensional scanner itself and the relative position and attitude between the three-dimensional scanner and the environment will be interfered by the outside world, so that the measurement accuracy of the three-dimensional scanner for the object to be measured is not fixed. If the measurement accuracy of the three-dimensional scanner is not detected under the usage conditions, it is impossible to determine whether the three-dimensional model of the object to be measured generated by the three-dimensional scanner under the corresponding conditions meets the quality requirements.

[0004] Therefore, how to detect the measurement accuracy of a three-dimensional scanner is a technical problem that those skilled in the art urgently need to solve. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the purpose of this application is to provide a three-dimensional scanner accuracy inspection standard device, which can detect the measurement accuracy of the three-dimensional scanner.

[0006] To achieve the above purpose, the following technical solutions are adopted in this application:

[0007] A three-dimensional scanner accuracy inspection standard device, which includes a base, an elevation detection standard device, a length detection standard device, and a flatness detection standard device. The elevation detection standard device is installed on the base and can be scanned by the three-dimensional scanner. The elevation detection standard device includes a plurality of elevation detection surfaces perpendicular to the up and down direction of the three-dimensional scanner accuracy inspection standard device, and there is a preset height difference between adjacent two elevation detection surfaces. The length detection standard device includes at least two marking points that can be scanned by the three-dimensional scanner, and the marking points are arranged at least at both ends along the extending direction of one elevation detection surface, and there is a preset length value between the marking points located on the same elevation detection surface. The flatness detection standard device includes a first detection standard device and a second detection standard device that can be scanned by the three-dimensional scanner. Both the first detection standard device and the second detection standard device are installed on the base. The first detection standard device includes a first detection surface, and the first detection surface is parallel to the elevation detection surface. The second detection standard device includes a second detection surface, and an angle greater than 0° and less than 180° is formed between the second detection surface and the elevation detection surface.

[0008] Further, the elevation detection standard device has a stepped structure, and the stepped structure includes a plurality of rectangular parallelepiped structures with different heights, and the upper surface of each rectangular parallelepiped structure forms an elevation detection surface.

[0009] Furthermore, the elevation detection surface extends along the front - rear direction of the 3D scanner accuracy inspection standard device, and the first detection surface extends along the left - right direction of the 3D scanner accuracy inspection standard device.

[0010] Furthermore, define the elevation detection surface with the highest height as the first elevation detection surface, and the elevation detection surface with the lowest height as the second elevation detection surface. Marking points are evenly distributed at both ends of the first elevation detection surface along the front - rear direction, and marking points are evenly distributed at both ends of the second elevation detection surface along the front - rear direction.

[0011] Furthermore, at least part of the first elevation detection surface and the second elevation detection surface are recessed downward to form installation grooves for arranging the marking points. Among them, the depth of the installation groove is equal to the thickness of the marking points.

[0012] Furthermore, the elevation detection standard device, the first detection standard device, and the second detection standard device are all made of a preset material. The range of the linear expansion coefficient of the preset material is 7·10 -6 / ℃ to 12·10 -6 / ℃, and the range of the elastic modulus of the preset material is 50 GPa to 100 GPa.

[0013] Furthermore, the 3D scanner accuracy inspection standard device further includes a support platform. The support platform includes a support surface, and an angle greater than 0° and less than 180° is formed between the support surface and the elevation detection surface. The second detection standard device is supported by the support surface and fixed on the support surface.

[0014] Furthermore, the 3D scanner accuracy inspection standard device further includes a plurality of fixing brackets. The plurality of fixing brackets are installed on the base, and the plurality of fixing brackets surround to form a first installation space, a second installation space, and a third installation space. The first detection standard device is fixed in the first installation space, the support platform is fixed in the second installation space, and the elevation detection standard device is fixed in the third installation space. Each fixing bracket includes a fitting surface parallel to the up - down direction of the 3D scanner accuracy inspection standard device, and each fitting surface fits against the first detection standard device, the support platform, or the elevation detection standard device.

[0015] Furthermore, a plurality of fixing holes distributed in a matrix are formed on the base, and each fixing bracket is installed in at least one fixing hole. The base is a solid structure.

[0016] Furthermore, a plurality of hooks are installed on the base, and the plurality of hooks are evenly arranged around the base. A handle is installed on the base, and the handle is located at the edge of the base. The three-dimensional scanner accuracy inspection standardizer further includes a shield located above the base. The shield is detachably connected to the base and forms an accommodation space, and the elevation detection standardizer, the first detection standardizer, and the second detection standardizer are all located in the accommodation space. The three-dimensional scanner accuracy inspection standardizer further includes a forklift base for cooperating with a forklift for transportation. The forklift base is located below the base and is detachably connected to the base.

[0017] The above three-dimensional scanner accuracy inspection standardizer can be placed under different working conditions. By scanning the three-dimensional scanner accuracy inspection standardizer with a three-dimensional scanner, a corresponding three-dimensional model can be obtained. Since the parameters of the three-dimensional scanner accuracy inspection standardizer are known, by comparing the three-dimensional model parameters of the three-dimensional scanner accuracy inspection standardizer with the actual parameters of the three-dimensional scanner accuracy inspection standardizer, the measurement accuracy of the three-dimensional scanner under the corresponding working conditions can be detected, which is beneficial to obtaining a three-dimensional model of the object to be measured that meets the quality requirements. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the three-dimensional scanner accuracy inspection standardizer provided by an embodiment of the present application.

[0019] Figure 2 It is a schematic structural diagram of the three-dimensional scanner accuracy inspection standardizer provided by an embodiment of the present application from a second perspective.

[0020] Figure 3 It is a schematic structural diagram of the three-dimensional scanner accuracy inspection standardizer provided by an embodiment of the present application from a third perspective.

[0021] Figure 4 It is a combined schematic diagram of the three-dimensional scanner accuracy inspection standardizer and the shield provided by an embodiment of the present application. Detailed Description of the Embodiment

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the specific embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0023] It should be noted that the terms "first", "second" and similar terms used in the description and claims of this application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantity limitation, but mean that there is at least one. "Multiple" or "several" means at least two. Unless otherwise indicated, terms such as "front", "rear", "left", "right", "lower" and / or "upper" are for convenience of description only and are not limited to a position or a spatial orientation. Terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. Terms such as "connected" or "coupled" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0024] As used in the description and appended claims of this application, the singular forms "a", "the" and "said" are also intended to include the plural forms, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0025] To clearly illustrate the technical solution of this application, the front, rear, left, right, upper and lower are also defined as Figure 1 shown.

[0026] As Figure 1 and Figure 2 shown, this application provides a three-dimensional scanner accuracy inspection standard 100, which is used to detect the measurement accuracy of a three-dimensional scanner for an object to be measured under different working conditions. Specifically, the three-dimensional scanner accuracy inspection standard 100 includes a base 11, an elevation detection standard 12, a flatness detection standard 13 and a length detection standard 14. Among them, the base 11 is used to support the elevation detection standard 12, the flatness detection standard 13 and the length detection standard 14. The elevation detection standard 12, the flatness detection standard 13 and the length detection standard 14 are used to detect the measurement accuracy of the three-dimensional scanner.

[0027] In this application, the parameters of the three-dimensional scanner accuracy inspection standard 100 are known. The three-dimensional scanner scans the three-dimensional scanner accuracy inspection standard 100 under different working conditions and generates a three-dimensional model. By comparing the actual parameters of the three-dimensional scanner accuracy inspection standard 100 with the parameters of the three-dimensional model, the measurement accuracy of the three-dimensional scanner under the corresponding working conditions can be detected, which is beneficial to obtaining a three-dimensional model that meets the quality requirements under different working conditions.

[0028] It should be noted that the parameters of the three-dimensional scanner accuracy inspection standard device 100 of the present application will not change under different working conditions, so that the three-dimensional scanner accuracy inspection standard device 100 scanned by the three-dimensional scanner under different working conditions is the actual parameter, which is beneficial to improving the accuracy of measuring the measurement accuracy of the three-dimensional scanner.

[0029] It should be noted that when the three-dimensional scanner accuracy inspection standard device 100 undergoes micron-level deformation under different working conditions, the parameters of the three-dimensional scanner accuracy inspection standard device 100 can be regarded as unchanged.

[0030] It should be noted that the present application does not limit the working conditions of the three-dimensional scanner, and only needs to meet that the parameters of the three-dimensional scanner accuracy inspection standard device 100 will not change within the working conditions. Exemplarily, the three-dimensional scanner accuracy inspection standard device 100 can detect the measurement accuracy of the three-dimensional scanner under working conditions such as hypergravity and acceleration. In addition, the present application takes the detection of the measurement accuracy of the three-dimensional scanner under the working condition of hypergravity as an example for description.

[0031] Specifically, the elevation detection standard device 12 is installed on the base 11 and can be scanned by the three-dimensional scanner. The elevation detection standard device 12 includes a plurality of elevation detection surfaces 121 perpendicular to the up and down direction of the three-dimensional scanner accuracy inspection standard device 100, and there is a preset height difference between two adjacent elevation detection surfaces 121. With such a setting, the three-dimensional scanner can generate a three-dimensional model of the elevation detection standard device 12, and corresponding elevation detection surfaces 121 can be generated in the three-dimensional model. The height difference between the elevation detection surfaces 121 in the three-dimensional model is calculated by the three-dimensional scanner. By comparing the height difference between the elevation detection surfaces 121 in the three-dimensional model with the preset height difference range, if the height difference between the elevation detection surfaces 121 in the three-dimensional model is within the preset height difference range, it can be known that the measurement accuracy of the height of the object to be measured by the three-dimensional scanner under the working condition of hypergravity meets the quality requirements.

[0032] It should be noted that the preset height difference range is the range value formed by the actual height difference between two adjacent elevation detection surfaces 121 in the three-dimensional scanner accuracy inspection standard device 100 and the allowable error.

[0033] More specifically, the length detection standard 14 includes at least two marking points 141 that can be scanned by the 3D scanner, and the marking points 141 are disposed at least at both ends of an elevation detection surface 121 along its extending direction. There is a preset length value between the marking points 141 on the same elevation detection surface 121. Among them, the extending direction of the elevation detection surface 121 is the front-back direction of the 3D scanner accuracy inspection standard 100 of the present application. With such a setting, the 3D scanner scans the two marking points 141 on the same elevation detection surface 121 to obtain the distance parameter between the marking points 141. By comparing the distance parameter between the marking points 141 and the preset length value range, if the distance parameter between the marking points 141 is within the preset length value range, it can be known that the measurement accuracy of the length of the object to be measured by the 3D scanner under the hypergravity condition meets the quality requirements.

[0034] In addition, the setting of the marking points 141 enables the 3D scanner to directly obtain the length parameter of the elevation detection surface 121. Thus, when detecting the length measurement accuracy of the 3D scanner, the length parameter of the elevation detection surface 121 can be obtained without constructing the 3D model of the 3D scanner accuracy inspection standard 100, which is beneficial to improving the efficiency of detecting the measurement accuracy of the 3D scanner.

[0035] At the same time, by arranging the marking points 141 on different elevation detection surfaces 121 and the height difference between the marking points 141 on different elevation detection surfaces 121 is known, the height difference between the elevation detection surfaces 121 can be obtained without three-dimensional modeling of the elevation detection standard 12, which can improve the elevation accuracy measurement efficiency of the 3D scanner accuracy inspection standard 100.

[0036] It should be noted that the preset length value range is the range value formed by the true distance between the marking points 141 on the same elevation detection surface 121 in the 3D scanner accuracy inspection standard 100 and the allowable error.

[0037] More specifically, the flatness detection standard device 13 includes a first detection standard device 131 and a second detection standard device 132 that can be scanned by a three-dimensional scanner. Both the first detection standard device 131 and the second detection standard device 132 are installed on the base 11. Among them, the first detection standard device 131 includes a first detection surface 1311, and the first detection surface 1311 is parallel to the elevation detection surface 121. The second detection standard device 132 includes a second detection surface 1321, and an angle greater than 0° and less than 180° is formed between the second detection surface 1321 and the elevation detection surface 121. With such a setting, the three-dimensional scanner can generate a three-dimensional model of the first detection standard device 131 and a three-dimensional model of the second detection standard device 132. By detecting whether the flatness of the first detection surface 1311 on the three-dimensional model of the first detection standard device 131 is within the allowable error range, it is possible to detect whether the flatness measurement accuracy of the three-dimensional scanner for the first detection surface 1311 meets the quality requirements. By detecting whether the body diagonal accuracy of the second detection surface 1321 on the three-dimensional model of the second detection standard device 132 is within the allowable error range, it is possible to detect whether the measurement accuracy of the body diagonal of the three-dimensional scanner for the second detection surface 1321 meets the quality requirements.

[0038] In summary, through the elevation detection standard device 12, the flatness detection standard device 13, and the length detection standard device 14, the measurement accuracy of the three-dimensional scanner for the object to be measured under the corresponding working conditions can be detected, which is beneficial for the three-dimensional scanner to obtain a three-dimensional model that meets the quality requirements under the corresponding working conditions. That is, under the corresponding working conditions, if the three-dimensional model accuracy of the elevation detection standard device 12 and the flatness detection standard device 13 scanned by the three-dimensional scanner meets the quality requirements, it can be known that the measurement accuracy of the three-dimensional scanner scanning meets the quality requirements.

[0039] As an implementation manner, the elevation detection standard device 12 has a stepped structure. The stepped structure includes a plurality of rectangular parallelepiped structures with different heights, and an elevation detection surface 121 is formed on the upper surface of each rectangular parallelepiped structure. With such a setting, the structure of the rectangular parallelepiped is stable, which can prevent the elevation detection standard device 12 from deforming under working conditions such as supergravity, and is beneficial to improving the detection accuracy of the measurement accuracy of the three-dimensional scanner. Secondly, the structure of the rectangular parallelepiped is simple, which is beneficial for the three-dimensional scanner to measure the actual parameters of the elevation detection surface 121 of the elevation detection standard device 12, and is beneficial to simplifying the processing technology of the elevation detection standard device 12. In addition, the stepped structure can detect the measurement accuracy of the three-dimensional scanner at multiple heights, which is beneficial for the three-dimensional scanner to adapt to the accuracy measurement of objects to be measured at different heights.

[0040] As an implementation manner, the elevation detection surface 121 extends along the front-back direction of the three-dimensional scanner accuracy inspection standard device 100. The first detection surface 1311 extends along the left-right direction of the three-dimensional scanner accuracy inspection standard device 100. In this application, both the elevation detection surface 121 and the first detection surface 1311 are rectangular surfaces. The long side direction of the elevation detection surface 121 extends along the front-back direction of the three-dimensional scanner accuracy inspection standard device 100, and the long side direction of the first detection surface 1311 extends along the left-right direction of the three-dimensional scanner accuracy inspection standard device 100.

[0041] Specifically, the elevation detection surface 121 with the highest height is defined as the first elevation detection surface 1211, and the elevation detection surface 121 with the lowest height is defined as the second elevation detection surface 1212. More specifically, marking points 141 are evenly arranged at both ends of the first elevation detection surface 1211 along the front-back direction of the three-dimensional scanner accuracy inspection standard device 100, and marking points 141 are evenly arranged at both ends of the second elevation detection surface 1212 along the front-back direction of the three-dimensional scanner accuracy inspection standard device 100.

[0042] Through the above settings, the three-dimensional scanner scans the marking points 141 on the first elevation detection surface 1211 and the second elevation detection surface 1212, and can directly obtain the height difference parameter between the first elevation detection surface 1211 and the second elevation detection surface 1212. By comparing the above height difference parameter with the actual height difference between the first elevation detection surface 1211 and the second elevation detection surface 1212, if the above height difference parameter is within the allowable error range, it can be known that the measurement accuracy of the three-dimensional scanner for height under the hypergravity condition meets the quality requirements. Thus, it is not necessary to generate a three-dimensional model of the elevation detection standard device 12 by the three-dimensional scanner and then calculate the height difference between the elevation detection surfaces 121 in the three-dimensional model by the three-dimensional scanner, which is beneficial to improving the efficiency of detecting the measurement accuracy of the three-dimensional scanner.

[0043] In addition, the three-dimensional scanner scans the marking points 141 on the first elevation detection surface 1211 to obtain the scanning length of the first elevation detection surface 1211, and the three-dimensional scanner scans the marking points on the second elevation detection surface 1212 to obtain the scanning length of the second elevation detection surface 1212. If both the scanning length of the first elevation detection surface 1211 and the scanning length of the second elevation detection surface 1212 are within the allowable error range, it can be known that the length measurement accuracy of the three-dimensional scanner meets the quality requirements within the height range of the first elevation detection surface 1211 and the second elevation detection surface 1212. Thus, it is not necessary to perform multiple detections of the measurement accuracy of the three-dimensional scanner within the above height range, which is beneficial to improving the efficiency of detecting the measurement accuracy of the three-dimensional scanner.

[0044] In this embodiment, at least a part of the first elevation detection surface 1211 and the second elevation detection surface 1212 are recessed downward to form a mounting groove (not shown in the figure). The mounting groove is used to arrange the marking points 141, wherein the depth of the mounting groove is equal to the thickness of the marking points 141. With such a setting, the upper surfaces of the marking points 141 can be flush with the first elevation detection surface 1211 and the second elevation detection surface 1212 respectively, so as to prevent the marking points 141 from protruding from the first elevation detection surface 1211 and the second elevation detection surface 1212, and further prevent the marking points 141 from interfering with the three-dimensional scanner scanning the first elevation detection surface 1211 and the second elevation detection surface 1212, which is beneficial to improving the detection accuracy of the three-dimensional scanner for the three-dimensional scanner accuracy inspection standard 100, and thus improving the detection accuracy of the measurement accuracy of the three-dimensional scanner.

[0045] As an embodiment, the elevation detection standard 12, the first detection standard 131 and the second detection standard 132 are all made of a preset material, and the range of the linear expansion coefficient of the preset material is 7·10 -6 / °C to 12·10 -6 / °C, and the range of the elastic modulus of the preset material is 50 GPa to 100 GPa. Specifically, the range of the linear expansion coefficient of the preset material is 8·10 -6 / °C to 11·10 -6 / °C, and the range of the elastic modulus of the preset material is 65 GPa to 85 GPa. With such a setting, it is possible to prevent the linear expansion coefficient of the preset material from being too large, resulting in deformation of the above-mentioned components under the condition of super gravity, so as to prevent the parameters measured by the three-dimensional scanner from being unable to be compared with the actual parameters of the above-mentioned components after deformation, which is beneficial to improving the detection accuracy of the measurement accuracy of the three-dimensional scanner. Secondly, it is also possible to prevent the elastic modulus of the preset material from being too small, resulting in deformation of the above-mentioned components under the condition of super gravity, thereby further improving the detection accuracy of the measurement accuracy of the three-dimensional scanner.

[0046] As Figure 2 and Figure 3 shown, as an embodiment, the three-dimensional scanner accuracy inspection standard 100 further includes a support platform 15, and the support platform 15 is used to support the second detection standard 132. Specifically, the support platform 15 includes a support surface 151, and an angle greater than 0° and less than 180° is formed between the support surface 151 and the elevation detection surface 121. The second detection standard 132 is supported by the support surface 151 and fixed on the support surface 151. In some embodiments, the second detection standard 132 is a cuboid structure. Placing the second detection standard 132 on the support platform 15 can form an angle between the second detection surface 1321 and the elevation detection surface 121, without the need to separately process the second detection standard 132 with different shapes, which is beneficial to simplifying the processing technology of the second detection standard 132.

[0047] In some embodiments, a plurality of limit members 152 are provided on the support platform 15. The plurality of limit members 152 and the support surface 151 form a limit space, and the second detection standard 132 is installed in the limit space so that the support platform 15 can limit the second detection standard 132. Such a setting is beneficial to simplifying the assembly process of the second detection standard 132 and the support platform 15 and improving the assembly efficiency of the second detection standard 132.

[0048] As an implementation manner, the three-dimensional scanner accuracy inspection standard 100 further includes a plurality of fixing brackets 16. The fixing brackets 16 are used to fix the elevation detection standard 12 and the flatness detection standard 13. Specifically, the plurality of fixing brackets 16 are installed on the base 11, and the plurality of fixing brackets 16 surround and form a first installation space, a second installation space, and a third installation space. Among them, the first detection standard 131 is fixed in the first installation space, the support platform 15 is fixed in the second installation space, and the elevation detection standard 12 is fixed in the third installation space. Such a setting can limit the first detection standard 131 through the first installation space, limit the elevation detection standard 12 through the third installation space, and limit the support platform 15 through the second installation space. Through the above settings, the assembly process of the elevation detection standard 12, the first detection standard 131, and the support platform 15 on the base 11 can be simplified, which is beneficial to improving the assembly efficiency of the three-dimensional scanner accuracy inspection standard 100.

[0049] More specifically, each fixing bracket 16 includes a fitting surface 161 parallel to the up-and-down direction of the three-dimensional scanner accuracy inspection standard 100, and each fitting surface 161 fits on the first detection standard 131, the support platform 15, or the elevation detection standard 12. Such a setting can enable the first detection standard 131, the support platform 15, and the elevation detection standard 12 to be arranged along the up-and-down direction of the three-dimensional scanner accuracy inspection standard 100, which is beneficial to limiting the first detection standard 131, the support platform 15, and the elevation detection standard 12, and thus beneficial to improving the detection accuracy of the measurement accuracy of the three-dimensional scanner.

[0050] As an implementation manner, a plurality of fixing holes 111 distributed in a matrix are formed on the base 11, and each fixing bracket 16 is installed in at least one fixing hole 111. Such a setting is beneficial to adjusting the installation position of the fixing bracket 16 on the base 11, thereby adjusting the installation positions of the elevation detection standard 12 and the flatness detection standard 13, so that the three-dimensional scanner accuracy inspection standard 100 can be placed according to the scanning requirements of the object to be measured, and further improving the detection accuracy of the measurement accuracy of the three-dimensional scanner. In some embodiments, the fixing bracket 16 is connected to the fixing hole 111 by screws.

[0051] In this embodiment, the base 11 has a solid structure. With such a setting, the structural strength of the base 11 can be improved to prevent the base 11 from deforming under the condition of hypergravity, which may cause the elevation detection standard 12 and the flatness detection standard 13 to displace, and thus avoid interfering with the measurement of the 3D model parameters of the 3D scanner accuracy inspection standard 100, thereby improving the detection accuracy of the 3D scanner measurement accuracy.

[0052] As Figure 4 shown, as an embodiment, a plurality of lifting hooks 112 are installed on the base 11, and the plurality of lifting hooks 112 are evenly arranged around the base 11. With such a setting, the lifting hooks 112 are beneficial to hoist the base 11, which is beneficial to carry the 3D scanner accuracy inspection standard 100, and further improves the convenience of use of the 3D scanner accuracy inspection standard 100.

[0053] Specifically, a handle 113 is installed on the base 11, and the handle 113 is located at the edge of the base 11. With such a setting, the handle 113 can further improve the convenience of carrying the base 11, and thus further improve the convenience of use of the 3D scanner accuracy inspection standard 100. In some embodiments, two handles 113 are provided, and the handles 113 are distributed along the left-right direction of the 3D scanner accuracy inspection standard 100, thereby further improving the convenience of use of the 3D scanner accuracy inspection standard 100.

[0054] More specifically, the 3D scanner accuracy inspection standard 100 further includes a shield 17 located above the base 11. The shield 17 is detachably connected to the base 11 and forms an accommodation space. Among them, the elevation detection standard 12, the first detection standard 131 and the second detection standard 132 are all located in the accommodation space. With such a setting, when the 3D scanner accuracy inspection standard 100 is not in use, the shield 17 can protect the elevation detection standard 12, the first detection standard 131 and the second detection standard 132 to prevent external impurities from eroding the above-mentioned components, which is beneficial to improving the service life of the 3D scanner accuracy inspection standard 100. In addition, the detachable connection between the shield 17 and the base 11 is beneficial to the disassembly and assembly of the shield 17, thereby improving the convenience of use of the 3D scanner accuracy inspection standard 100. In some embodiments, the shield 17 is snap-connected to the base 11.

[0055] In this embodiment, the three-dimensional scanner accuracy inspection standardizer 100 further includes a forklift base 18, which is used to cooperate with a forklift for transportation. The forklift base 18 is located below the base 11 and is detachably connected to the base 11. With such a setting, it is beneficial to carry the three-dimensional scanner accuracy inspection standardizer 100 with a relatively large weight by using a forklift in cooperation with the forklift base 18, thereby further improving the usability of the three-dimensional scanner accuracy inspection standardizer 100. In addition, the detachable connection between the forklift base 18 and the base 11 is beneficial to the disassembly and assembly of the forklift base 18 to avoid interference of the forklift base 18 with the placement of the base 11, thus being beneficial to improving the usability of the three-dimensional scanner accuracy inspection standardizer 100. In some embodiments, the forklift base 18 and the base 11 are detachably connected by bolts.

[0056] It should be understood that for those of ordinary skill in the art, improvements or modifications can be made according to the above description, and all such improvements and modifications shall fall within the protection scope of the appended claims of this application.

Claims

1. A three-dimensional scanner accuracy inspection standard, characterized in that: include: Pedestal; An elevation detection standard, which is mounted on the base and can be scanned by the three-dimensional scanner, and includes a plurality of elevation detection surfaces perpendicular to the up and down directions of the three-dimensional scanner precision inspection standard, and a preset height difference is provided between two adjacent elevation detection surfaces; A length detection standard, the length detection standard comprising at least two marking points that can be scanned by the three-dimensional scanner, the marking points being arranged at least at two ends of one elevation detection surface along its extension direction, and the marking points on the same elevation detection surface having a preset length value between them; A flatness detection standard, the flatness detection standard includes a first detection standard and a second detection standard that can be scanned by the three-dimensional scanner, the first detection standard and the second detection standard are both installed on the base, the first detection standard includes a first detection surface, the first detection surface is parallel to the elevation detection surface, the second detection standard includes a second detection surface, and an angle greater than 0° and less than 180° is formed between the second detection surface and the elevation detection surface.

2. A three-dimensional scanner accuracy inspection standard according to claim 1, characterized in that: The elevation detection standard is in a step-shaped structure, and the step-shaped structure includes a plurality of cuboid structures with different heights, and an elevation detection surface is formed on the upper surface of each of the cuboid structures.

3. A three-dimensional scanner accuracy inspection standard according to claim 1, characterized in that: The elevation detection surface extends along the front-rear direction of the three-dimensional scanner accuracy inspection standard, and the first detection surface extends along the left-right direction of the three-dimensional scanner accuracy inspection standard.

4. A three-dimensional scanner accuracy inspection standard according to claim 1 or 3, characterized in that: The elevation detection surface with the highest height is defined as the first elevation detection surface, and the elevation detection surface with the lowest height is defined as the second elevation detection surface. The marking points are arranged at both ends of the first elevation detection surface along the front-to-back direction, and the marking points are arranged at both ends of the second elevation detection surface along the front-to-back direction.

5. A three-dimensional scanner accuracy inspection standard according to claim 4, characterized in that: The first elevation detection surface and the second elevation detection surface are at least partially recessed downward to form installation grooves, and the installation grooves are used to arrange the marking points, wherein the groove depth of the installation grooves is equal to the thickness of the marking points.

6. A three-dimensional scanner accuracy inspection standard according to claim 1, characterized in that: The elevation detection standard, the first detection standard and the second detection standard are all made of a preset material, and the linear expansion coefficient of the preset material is in the range of 7·10 -6 / ℃ to 12·10 -6 / ℃, the elastic modulus of the preset material ranges from 50GPa to 100GPa.

7. A three-dimensional scanner accuracy inspection standard according to claim 1, characterized in that: The three-dimensional scanner accuracy inspection standard also includes: The supporting platform comprises a supporting surface, an angle greater than 0° and less than 180° is formed between the supporting surface and the elevation detection surface, and the second detection standard is supported by and fixed on the supporting surface.

8. A three-dimensional scanner accuracy inspection standard according to claim 7, characterized in that: The three-dimensional scanner accuracy inspection standard also includes: A plurality of fixing brackets, wherein the plurality of fixing brackets are installed on the base, and the plurality of fixing brackets surround and form a first installation space, a second installation space, and a third installation space, wherein the first detection standard is fixed in the first installation space, the support platform is fixed in the second installation space, and the elevation detection standard is fixed in the third installation space; Each of the fixed brackets includes a fitting surface parallel to the upper and lower directions of the three-dimensional scanner accuracy inspection standard, and each of the fitting surfaces is fitted to the first inspection standard, the support platform or the height inspection standard.

9. A three-dimensional scanner accuracy inspection standard according to claim 8, characterized in that: The base is provided with a plurality of fixing holes distributed in a matrix, and each of the fixing brackets is installed in at least one of the fixing holes; The base is a solid structure.

10. The three-dimensional scanner accuracy inspection standard according to claim 1, characterized in that: A plurality of hooks are installed on the base, and the plurality of hooks are evenly arranged around the base; A handle is installed on the base, and the handle is located at the edge of the base; The three-dimensional scanner accuracy inspection standard also includes a shield located above the base, the shield is detachably connected to the base and forms a receiving space, the elevation inspection standard, the first inspection standard and the second inspection standard are all located in the receiving space; The three-dimensional scanner accuracy inspection standard also includes a forklift base for cooperating with a forklift for transportation. The forklift base is located below the base and is detachably connected to the base.

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