Scale, measuring tool and measuring system for three-dimensional scanner

Abstract

The utility model discloses a scale, a measuring tool and a measuring system for a three-dimensional scanner, comprising a scale body which is provided with at least one working side; at least two functional areas are arranged on each working side, the distance between the two functional areas is known, and the functional areas are used for serving as the measurement reference of the scanner; one identification area is arranged on each working side; the identification area comprises a first identification point group arranged on the scale body; the first recognition point group is composed of recognition points which can be recognized by a three-dimensional scanner, and the recognition points form a unique identity mark. By means of the recognition area, the three-dimensional scanner synchronously recognizes the unique identity mark of the scale while the scale conducts benchmark measurement through the functional area, and the known distance of the functional area input into the system in advance is called; and the three-dimensional scanner compares the known spacing with the spacing of the functional area acquired in real time, and quickly completes reference correction, so that the scanning efficiency of three-dimensional scanning is improved.

Description

Technical Field

[0001] This utility model relates to the field of 3D scanner technology, specifically to a ruler, measuring tool, and measuring system for a 3D scanner. Background Technology

[0002] An optical 3D scanner is a device that uses optical imaging to acquire three-dimensional information of a measured object. It is currently widely used in industrial product inspection, reverse engineering, simulation, and positioning. When measuring large objects with an optical 3D scanner, a reference scale is needed for high-precision measurement.

[0003] The existing rulers are mainly identified by scanning QR codes, which is a rather cumbersome process. Utility Model Content

[0004] To address the aforementioned deficiencies in existing technologies, a ruler, measuring tool, and measuring system for 3D scanners are provided. During the measurement benchmark correction process, the 3D scanner also quickly identifies the unique identifier of the corresponding ruler and obtains the known spacing of the corresponding ruler.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] Firstly, the scale used in 3D scanners, including

[0007] The scale body has at least one working side.

[0008] Functional areas: At least two functional areas are provided on each working side, and the distance between the two functional areas is known. The functional areas are used as a reference for scanner measurement.

[0009] An identification area is set on each working side; the identification area includes a first identification point group set on the ruler body; the first identification point group consists of identification points that can be identified by the 3D scanner, and the identification points constitute a unique identification mark.

[0010] According to the above technical solution, the identification point adopts the first marker point; the unique identity mark is formed by randomly arranging the several first marker points.

[0011] According to the above technical solution, the identification point adopts an coded point; the coded point constitutes a unique identity mark.

[0012] According to the above technical solution, the identification point includes a first marking point and a coding point; the outer surface of the first mounting plate is divided into two areas; several first marking points are set in one area, and several coding points are set in the other area; the several first marking points and several coding points together constitute a unique identification mark.

[0013] According to the above technical solution, the identification area also includes a first mounting plate fixed on the working side, the first marking point adopts a reflective sticker, and the reflective sticker is set on the outer surface of the first mounting plate by adhesive; the coding point is set on the outer surface of the first mounting plate by adhesive.

[0014] According to the above technical solution, the functional area includes a second mounting plate fixed on the scale body and a second identification point group set on the mounting plate, the second identification point group being located on the outer surface of the second mounting plate.

[0015] According to the above technical solution, the second identification point group adopts at least one second marker point; the distance between any second marker point in one second identification point group and any second marker point in another second identification point group is known between the two functional areas.

[0016] According to the above technical solution, a support base is fixedly provided on the scale body, and at least one support surface is provided on the support base; the support surfaces of two support bases constitute at least one support state.

[0017] According to the above technical solution, a support base is provided at each end of the scale body, and a functional area, an identification area, and another functional area are arranged sequentially between the support bases along the length of the scale body. The identification area includes a first mounting plate and a first set of marking points, and the functional area includes three second marking points. The identification points of the identification area include the first marking point and the coding point.

[0018] According to the above technical solution, the three second marking points in the functional area are arranged at intervals along the length of the ruler body on the outer surface of the first mounting plate.

[0019] According to the above technical solution, the three second marking points in the functional area are arranged in a triangle on the outer surface of the first mounting plate.

[0020] Secondly, measuring tools, including multiple rulers as described above for 3D scanners.

[0021] Thirdly, the measurement system employs multiple sets of measurement tools as described above, and the identification points in the identification area include first marker points and coded points.

[0022] According to the above technical solution, in the same set of measuring tools, the arrangement of the coding points of all scales is the same; between multiple sets of measuring tools, the arrangement of the coding points of the scales in one set of measuring tools is different from the arrangement of the coding points of the scales in another set of measuring tools.

[0023] In the same set of measuring tools, the arrangement of the first marking points on each scale is different.

[0024] This utility model has the following beneficial effects:

[0025] 1. At least two functional areas with known spacing are set on the working side of the scale body to serve as the reference for the measurement of the 3D scanner. While the 3D scanner is performing reference measurement, it scans to the recognition area and obtains the unique identification mark recorded in the system and the spacing between the functional areas within the working side corresponding to the unique identification mark through the recognition area.

[0026] Based on the above structure, using the recognition area, while the scale is measuring the baseline through the functional area, the 3D scanner simultaneously identifies the unique identifier of the scale and calls up the known spacing of the functional area pre-entered in the system; the 3D scanner compares the known spacing with the spacing of the functional area acquired in real time, quickly completes the baseline correction, thereby improving the scanning efficiency of 3D scanning.

[0027] 2. Different measuring tools are distinguished by coding points, and different scales within the same set of measuring tools are distinguished by the first marker point, facilitating the differentiation of scales and measuring tools. When a 3D scanner is scanning an object, multiple sets of measuring tools are used simultaneously, making it easy to identify which set of measuring tools and which scale the corresponding scale belongs to, greatly improving the reference calibration speed of the 3D scanner and increasing scanning efficiency.

[0028] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0030] Figure 1 This is a structural schematic diagram of an embodiment provided by this utility model;

[0031] Figure 2 This is a front view of an embodiment provided by this utility model;

[0032] Figure 3 This is a side view of an embodiment provided by this utility model;

[0033] Figure 4 This is a top view of an embodiment provided by this utility model;

[0034] Figure 5 This is a detailed view of the functional area of ​​an embodiment provided by this utility model;

[0035] In the diagram, 1. Scale body; 2. Working side; 3. Functional area; 3-1. Second mounting plate; 3-2. Second identification point group; 3-21. Second marking point; 4. Identification area; 4-1. First identification point group; 4-11. First marking point; 4-12. Encoding point; 4-2. First mounting plate; 5. Support base. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0037] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Reference Figure 1-5 As shown, this utility model provides a ruler for a 3D scanner.

[0040] Example 1

[0041] include

[0042] The scale body 1 has at least one working side 2.

[0043] Functional area 3: At least two functional areas are set on each working side, and the distance between the two functional areas is known. The functional areas are used as a reference for scanner measurement.

[0044] Identification area 4, one identification area is set on each working side; the identification area includes a first identification point group 4-1 set on the ruler body; the first identification point group consists of identification points that can be identified by the 3D scanner, and the identification points constitute a unique identification mark.

[0045] Among them, the scale body adopts the following Figure 2 The rod-shaped structure shown can also be a rod-shaped structure similar to a rod-shaped structure, or a plate-shaped structure or a block-shaped structure.

[0046] All of the above structures are rigid structures. Flexible structures, such as flexible sheet structures or rope structures, can also be used. Flexible structures are taut when in use and easy to store when not in use.

[0047] Different scale body structures can be set according to requirements. It is only necessary to ensure that the distance between the two recognition areas located on the same working side of the scale body is known and that the distance between the two will not change during normal use.

[0048] In addition, the scale body can be configured with a corresponding number of working sides as needed. Functional areas and recognition areas located on the same working side can be recognized by the same 3D scanner located at the same point.

[0049] As shown in the figure, a working side is provided on the rod-shaped structure. Alternatively, a working side can be provided on both the front and rear sides of the rod-shaped, plate-shaped, or sheet-shaped structure, for a total of two working sides. Another option is to provide a working side on each of the three sides of the rod-shaped or bar-shaped structure, with each side corresponding to a 120° area around the circumference of the structure. Multiple working sides can also be provided on multiple sides of a rectangular block-shaped structure. Furthermore, a working side can be provided on each face of a foldable plate-shaped structure, with the number of folding plates determined according to requirements.

[0050] In Example 1, at least two functional areas with known spacing are set on the working side of the scale body to serve as a reference for the measurement of the 3D scanner. While the 3D scanner performs reference measurement, it scans the identification area and obtains the unique identification mark recorded in the system and the spacing between the functional areas on the working side corresponding to the unique identification mark through the identification area.

[0051] Example 2

[0052] The structure and principle of Example 2 are similar to those of Example 1, except that: based on Example 1, three forms of setting the recognition area are given.

[0053] The first method uses first marker points 4-11 as identification points; the unique identity mark is formed by randomly arranging the aforementioned first marker points.

[0054] The second method uses coding points 4-12 for identification; these coding points constitute a unique identity marker.

[0055] The third type includes identification points including first marker points and coding points; the outer surface of the first mounting plate is divided into two areas; several first marker points are set in one area and several coding points are set in the other area; the unique identification mark is composed of several first marker points and several coding points.

[0056] In embodiment 2, the preferred identification area further includes a first mounting plate 4-2 fixed to the working side. The first marking point uses reflective stickers, which are adhesively applied to the outer surface of the first mounting plate. The coding point is also adhesively applied to the outer surface of the first mounting plate. This preferred embodiment of the identification area is mainly used in ruler bodies with rod-shaped or bar-shaped structures that lack a sufficiently large adhesive surface. The first mounting plate provides an adhesive surface for the coding point or the first marking point. If other ruler bodies, such as plate-shaped or block-shaped structures, have a sufficient adhesive area, the first mounting plate for the identification area can be omitted.

[0057] Example 3

[0058] The structure and principle of Example 3 are similar to those of Example 1 or 2, except that a preferred structural form of the functional area is given.

[0059] As shown in the figure, the functional area includes a second mounting plate 3-1 fixed on the scale body and a second identification point group 3-2 set on the mounting plate. The second identification point group is located on the outer surface of the second mounting plate.

[0060] The second identification point group uses at least one second marker point 3-21; the distance between any second marker point in one second identification point group and any second marker point in another second identification point group between the two functional areas is known.

[0061] The preferred embodiment of the functional area given in Example 3 is mainly used in ruler bodies with rod-shaped or bar-shaped structures that do not have a sufficiently large adhesive surface. An adhesive surface is provided by the second marking point of the second mounting plate. If other ruler bodies, such as plate-shaped or block-shaped structures, have a sufficient adhesive area, the second mounting plate of the functional area can be omitted.

[0062] Example 4

[0063] The structure and principle of Example 4 are similar to those of Examples 1-3, except that: in order to facilitate the support of the scale body, a support seat 5 is fixedly provided on the scale body, and at least one support surface is provided on the support seat; the support surfaces of two support seats constitute at least one support state.

[0064] The support surface is determined based on the number of working sides on the scale body, ensuring that each working side has a corresponding support state for the scale. One support state corresponds to one or two working sides, such as a scale body with a horizontally arranged rod-like or pole-like structure. One support state corresponds to three or four working sides, such as a scale body with a vertically arranged rod-like, pole-like, or block-like structure.

[0065] Based on the above four types of embodiments, a preferred embodiment is given in conjunction with the accompanying drawings. The scale body adopts a rod-shaped structure, with a support base at each end of the scale body. Between the support bases, along the length of the scale body, there are sequentially arranged functional areas, identification areas, and functional areas. The identification area includes a first mounting plate and a first set of marking points. The functional area includes three second marking points. The identification points of the identification area include first marking points and coding points.

[0066] As shown in the figure, the three second marker points in the functional area are arranged at intervals along the length of the ruler body on the outer surface of the first mounting plate.

[0067] Alternatively, the three second marker points within the functional area are arranged in a triangle on the outer surface of the first mounting plate.

[0068] This invention also provides measuring tools, including multiple rulers as described above for a 3D scanner.

[0069] This invention also provides a measurement system that employs multiple sets of measurement tools as described above, and the identification points in the identification area include a first marker point and a coding point.

[0070] Within the same set of measuring tools, the arrangement of the coding points on all scales is the same; however, between multiple sets of measuring tools, the arrangement of the coding points on the scales in one set of measuring tools differs from that in another set of measuring tools.

[0071] In the same set of measuring tools, the arrangement of the first marking points on each scale is different.

[0072] In multiple sets of measuring tools, the scales of one set of measuring tools have the same arrangement of the first mark points as the scales of another set of measuring tools; or, in multiple sets of measuring tools, the arrangement of the first mark points of each scale is different.

[0073] In this measurement system, different measuring tools are distinguished by coded points, and different scales within the same set of measuring tools are distinguished by a first marker point, facilitating the differentiation of scales and measuring tools. When the 3D scanner is scanning an object, multiple sets of measuring tools are used simultaneously, making it easy to identify which set of measuring tools and which scale the corresponding scale belongs to, greatly improving the reference calibration speed of the 3D scanner and increasing scanning efficiency.

[0074] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A scale for a three-dimensional scanner, characterized by: The utility model relates to a measuring tool for three-dimensional scanner, which comprises a ruler body, at least one working side provided on the ruler body, at least two functional areas provided on each working side, a known distance between the two functional areas, the functional areas serving as the reference for the measurement of the scanner, an identification area provided on each working side, the identification area comprising a first identification point group provided on the ruler body, the first identification point group consisting of identification points identifiable by the three-dimensional scanner and constituting a unique identity mark. The identification points are first marking points, and the unique identity mark is formed by the random arrangement of the first marking points. The identification points are coding points, and the unique identity mark is formed by the coding points. The identification points comprise first marking points and coding points, the outer surface of the first mounting plate is divided into two areas, the first marking points are arranged in one area, and the coding points are arranged in the other area; the unique identity mark is formed by the first marking points and the coding points. The identification area further comprises a first mounting plate fixed to the working side, the first marking points are reflective stickers, and the reflective stickers are arranged on the outer surface of the first mounting plate in a manner of being adhered; the coding points are arranged on the outer surface of the first mounting plate in a manner of being adhered.

2. Scale for a three-dimensional scanner according to claim 1, characterized in that: The functional area comprises a second mounting plate fixed to the ruler body and a second identification point group arranged on the mounting plate, and the second identification point group is arranged on the outer surface of the second mounting plate.

3. Scale for a three-dimensional scanner according to claim 1, characterized in that: The second identification point group comprises at least one second marking point, and the distance between any second marking point in one second identification point group and any second marking point in another second identification point group is known.

4. Scale for a three-dimensional scanner according to claim 1, characterized in that: The ruler body is fixed with support seats, and at least one support surface is arranged on each support seat; at least one support state is formed by the support surfaces of the two support seats.

5. Scale for a three-dimensional scanner according to claim 4, characterized in that: Each end of the ruler body is provided with a support seat, and functional areas, identification areas, and functional areas are sequentially arranged along the length direction of the ruler body between the support seats, the identification area comprises a first mounting plate and a first marking point group, and the functional area comprises three second marking points; the identification points of the identification area comprise first marking points and coding points.

6. The scale for a three-dimensional scanner of claim 1, wherein: The three second marking points in the functional area are arranged on the outer surface of the first mounting plate in a manner of being spaced apart along the length direction of the ruler body.

7. Scale for a three-dimensional scanner according to claim 6, characterized in that: The three second marking points in the functional area are arranged on the outer surface of the first mounting plate in a triangular manner.

8. Scale for a three-dimensional scanner according to claim 1, characterized in that: The utility model relates to a measuring tool for three-dimensional scanner, which comprises a ruler body, at least one working side provided on the ruler body, at least two functional areas provided on each working side, a known distance between the two functional areas, the functional areas serving as the reference for the measurement of the scanner, an identification area provided on each working side, the identification area comprising a first identification point group provided on the ruler body, the first identification point group consisting of identification points identifiable by the three-dimensional scanner and constituting a unique identity mark.

9. Scale for a three-dimensional scanner according to claim 1, characterized in that: The identification points are first marking points, and the unique identity mark is formed by the random arrangement of the first marking points.

10. Scale for a three-dimensional scanner according to claim 9, characterized in that: The identification points are coding points, and the unique identity mark is formed by the coding points.

11. Scale for a three-dimensional scanner according to claim 9, characterized in that: The identification points comprise first marking points and coding points, the outer surface of the first mounting plate is divided into two areas, the first marking points are arranged in one area, and the coding points are arranged in the other area; the unique identity mark is formed by the first marking points and the coding points.

12. A measurement tool characterized by: The identification area further comprises a first mounting plate fixed to the working side, the first marking points are reflective stickers, and the reflective stickers are arranged on the outer surface of the first mounting plate in a manner of being adhered; the coding points are arranged on the outer surface of the first mounting plate in a manner of being adhered.

13. A measurement system characterized by: The functional area comprises a second mounting plate fixed to the ruler body and a second identification point group arranged on the mounting plate, and the second identification point group is arranged on the outer surface of the second mounting plate.

14. The measurement system of claim 13, wherein: The second identification point group comprises at least one second marking point, and the distance between any second marking point in one second identification point group and any second marking point in another second identification point group is known. In the same set of measuring tools, the arrangement of the coding points of all the rulers is the same; between multiple sets of measuring tools, the arrangement of the coding points of the rulers in one set of measuring tools is different from the arrangement of the coding points of the rulers in another set of measuring tools. In the same set of measuring tools, the arrangement of the first marking points of each ruler is different.

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