Comparison board and tracking type scanner
By designing a comparison plate with a rotatable cover plate and a third calibration surface with a tracker, the problem of insufficient calibration accuracy of the existing single-board comparison plate is solved, the accuracy and calibration accuracy of laser reconstruction are improved, and the cost is reduced.
Patent Information
- Application Number
- CN202421538326.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The calibration accuracy of the existing single-board comparator plates is insufficient, which cannot meet the requirements of laser long-distance calibration, and it is difficult to cooperate with the tracker, resulting in insufficient calibration accuracy.
A comparison plate is designed, including a first plate body and a second plate body. The first plate body is composed of a bottom plate and two cover plates. The cover plate can be rotated to open or cover the first calibration surface, and a second calibration surface is provided on the cover plate. The second plate body is provided with a third calibration surface for cooperating with the tracker.
By adding the calibration area and matching the third calibration surface of the tracker, the accuracy and calibration accuracy of laser reconstruction are improved, the phenomenon of laser reconstruction is reduced, and the cost of comparing the plate is reduced.
Smart Images
Figure CN222865846U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tracking scanners, and in particular to a comparison plate and a tracking scanner. Background Art
[0002] Tracking scanners include trackers and 3D scanners, which are currently widely used in product inspection, simulation, and positioning. They are often calibrated through comparison boards to achieve the correction of scanner camera parameters.
[0003] In the related art, the comparison plate is often a single-plate structure, that is, the comparison plate is a plate structure with only one piece of material involved in laser calibration. However, as the number of laser beams currently carried by equipment increases, the size of the calibration area on the comparison plate cannot meet the requirements of long-distance laser calibration, which is not conducive to laser reconstruction. Moreover, a single plate-like structure can only calibrate the scanner and is difficult to cooperate with the tracker, resulting in insufficient calibration accuracy. Utility Model Content
[0004] Based on this, it is necessary to provide a comparison plate and a tracking scanner to solve the problem of insufficient calibration accuracy of the existing single-plate comparison plate.
[0005] The present application provides a comparison plate, which is used in a tracking scanner. The comparison plate includes a first plate body and a second plate body. The first plate body includes a bottom plate and two cover plates. The bottom plate is provided with a first calibration surface. The two cover plates are respectively arranged at opposite ends of the bottom plate along a first preset direction, and the two cover plates can rotate relative to the bottom plate to cooperate in opening or covering the first calibration surface. In addition, the cover plate has a second calibration surface arranged close to the first calibration surface. The second plate body is arranged at one end of the bottom plate along a second preset direction and connected to the bottom plate. The second plate body has a third calibration surface, and the third calibration surface is used to cooperate with a tracker to determine the position of the comparison plate. The second preset direction is arranged at an angle with the first preset direction. Wherein, both the first calibration surface and the second calibration surface are provided with silk screens, and the silk screens are used for calibration and reconstruction of laser lines.
[0006] In one of the embodiments, when the cover plate is rotated to an extreme position in a direction away from the base plate, the second calibration surface and the first calibration surface are in the same plane.
[0007] In one of the embodiments, a handle is connected to the surface of the cover plate facing away from the second calibration surface, and the handle is configured to drive the cover plate to rotate in response to an external force.
[0008] In one of the embodiments, the comparison plate further includes a fixing platform, which is disposed at the connection between the base plate and the second plate body and is respectively connected to the base plate and the second plate body to support the base plate and the second plate body.
[0009] In one of the embodiments, a first connecting column is connected to the cover plate, and a second connecting column is connected to the fixed platform; the comparison plate also includes a rotating shaft, which passes through the first connecting column and the second connecting column and is rotatably connected to the first connecting column and the second connecting column.
[0010] In one embodiment, the fixing platform is bonded or screwed to the bottom plate, and / or the fixing platform is bonded or screwed to the second plate.
[0011] In one embodiment, the first calibration plane is perpendicular to the third calibration plane.
[0012] In one embodiment, the number of the second plate bodies is two, and they are defined as a first sub-plate and a second sub-plate respectively, and the first sub-plate and the second sub-plate are respectively connected to the opposite ends of the bottom plate along the second preset direction; wherein the projection of the third calibration surface on the first sub-plate on the second sub-plate along the second preset direction does not overlap with the third calibration surface on the second sub-plate.
[0013] In one embodiment, the first plate is a carbon fiber plate, and / or the second plate is a carbon fiber plate.
[0014] The present application also provides a tracking scanner, which includes a tracker, a scanner, and a comparison plate as described in any one of the above embodiments.
[0015] Compared with the prior art, the comparison plate and tracking scanner provided by the present application, by setting a bottom plate and a cover plate, when the cover plate rotates relative to the bottom plate and opens the first calibration surface, the second calibration surface on the cover plate can also be exposed, and since both the first calibration surface and the second calibration surface are provided with silk screen, that is, the second calibration surface can also play a calibration role, thereby increasing the calibration area of the comparison plate, which is conducive to reducing the phenomenon of laser reconstruction lack of lines and effectively ensuring the accuracy of laser reconstruction. In addition, the two cover plates are arranged relative to each other, which can improve the uniformity of the area on both sides of the bottom plate, thereby further improving the accuracy of laser reconstruction. When the cover plate is folded and closed, the cover plate can block the silk screen on the first calibration surface and the second calibration surface, thereby protecting the silk screen and preventing the silk screen from being scratched. In addition, the third calibration surface on the second plate body can cooperate with the tracker, taking into account the calibration of the tracker, and the entire structure is relatively simple, easy to assemble, and can reduce the cost of the comparison plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 A schematic diagram of the structure of a comparison board according to an embodiment of the present application;
[0018] Figure 2 for Figure 1 The enlarged view of point A in the middle;
[0019] Figure 3 This is a schematic diagram of the structure of a comparison plate cover when it is opened according to an embodiment of the present application.
[0020] The symbols in the figure mean the following:
[0021] 100, comparison plate; 10, first plate body; 11, bottom plate; 111, first calibration surface; 12, cover plate; 121, second calibration surface; 122, first connecting column; 20, second plate body; 21, third calibration surface; 211, second marking point; 20a, first sub-plate; 20b, second sub-plate; 30, handle; 40, fixing table; 41, second connecting column. DETAILED DESCRIPTION
[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0023] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0025] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0026] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0027] Tracking scanners include trackers and 3D scanners, which are currently widely used in product inspection, simulation, and positioning. They are often calibrated through comparison boards to achieve the correction of scanner camera parameters.
[0028] In the related art, the comparison plate is often a single-plate structure, that is, the comparison plate is a plate structure with only one piece of material involved in laser calibration. However, as the number of laser beams currently carried by equipment increases, the size of the calibration area on the comparison plate cannot meet the requirements of long-distance laser calibration, which is not conducive to laser reconstruction. Moreover, a single plate-like structure can only calibrate the scanner and is difficult to cooperate with the tracker, resulting in insufficient calibration accuracy.
[0029] See also Figure 1-Figure 3 In order to solve the problem of insufficient calibration accuracy of the existing single-plate comparison plate, the present application provides a comparison plate 100, which is applied to a tracking scanner.
[0030] Specifically, the comparison board 100 includes a first plate body 10 and a second plate body 20. The first plate body 10 includes a bottom plate 11 and two cover plates 12. The bottom plate 11 is provided with a first calibration surface 111. The two cover plates 12 are respectively provided at opposite ends of the bottom plate 11 along a first preset direction, and both cover plates 12 can rotate relative to the bottom plate 11 to cooperate in opening or covering the first calibration surface 111. In addition, the cover plate 12 has a second calibration surface 121 arranged close to the first calibration surface 111. The second plate body 20 is provided at one end of the bottom plate 11 along a second preset direction and connected to the bottom plate 11. The second plate body 20 has a third calibration surface 21. The third calibration surface 21 is used to cooperate with the tracker to determine the position of the comparison board 100. The second preset direction is set at an angle with the first preset direction. Among them, the first calibration surface 111 and the second calibration surface 121 are both provided with silk screen (not shown in the figure), and the silk screen is used for calibration and reconstruction of the laser line.
[0031] It is understandable that, in the present application, by setting the base plate 11 and the cover plate 12, when the cover plate 12 is rotated relative to the base plate 11 and the first calibration surface 111 is opened, the second calibration surface 121 on the cover plate 12 can also be exposed, and since both the first calibration surface 111 and the second calibration surface 121 are provided with silk screens, that is, the second calibration surface 121 can also play a calibration role, thereby increasing the calibration area of the comparison plate 100, which is conducive to reducing the phenomenon of insufficient lines in laser reconstruction and effectively ensuring the accuracy of laser reconstruction. In addition, the two cover plates 12 are arranged relative to each other, which can improve the uniformity of the area on both sides of the base plate 11, thereby further improving the accuracy of laser reconstruction. When the cover plate 12 is folded and closed, the cover plate 12 can block the silk screens on the first calibration surface 111 and the second calibration surface 121, thereby protecting the silk screens and preventing the silk screens from being scratched. In addition, the third calibration surface 21 on the second plate body 20 can cooperate with the tracker, taking into account the calibration of the tracker, and the entire structure is relatively simple and easy to assemble, which can reduce the cost of the comparison plate 100.
[0032] Preferably, the first preset direction of the present application is set as the length direction of the bottom plate 11, and the second preset direction is set as the width direction of the bottom plate 11, that is, the first preset direction is perpendicular to the second preset direction.
[0033] To further improve the accuracy of laser reconstruction, in one embodiment, Figure 3 As shown, when the cover plate 12 rotates to an extreme position in a direction away from the base plate 11 , the second marking surface 121 and the first marking surface 111 can be arranged to be in the same plane.
[0034] Of course, in other embodiments, the second calibration surface 121 and the first calibration surface 111 may also be arranged at a certain angle, as long as the same or similar effects can be achieved.
[0035] In one embodiment, a plurality of marking points are provided on the first calibration surface 111 and the third calibration surface 21, and the marking points provided on the first calibration surface 111 are defined as first marking points (not shown), and the marking points provided on the third calibration surface 21 are defined as second marking points 211. The first marking points are used for the coordinated positioning of the scanner, and the second marking points 211 are used for the coordinated positioning of the tracker, so that a stable spatial relationship can be formed to realize the calibration of the tracking scanner.
[0036] Specifically, the marking point can be fixed to the first calibration surface 111 or the third calibration surface 21 by bonding or the like, and can be positioned by silk-screen printing or the like. It can be understood that when the cover plate 12 is covered on the first calibration surface 111, the cover plate 12 can protect the marking point on the first calibration surface 111 to prevent the marking point from being scratched and moved, thereby affecting the accuracy. It should be noted that the second calibration surface 121 in this embodiment may not be provided with a marking point to reduce costs.
[0037] In one embodiment, if Figure 1 As shown, the first calibration surface 111 is perpendicular to the third calibration surface 21. In this way, it is convenient for the tracker to identify the marking points on the third calibration surface 21, and it is also convenient for the scanner to identify the marking points on the first calibration surface 111, so as to facilitate the correction of the camera parameters on the scanner.
[0038] Furthermore, in one embodiment, the number of the second plate bodies 20 is two, and they are defined as a first sub-plate 20a and a second sub-plate 20b, respectively. The first sub-plate 20a and the second sub-plate 20b are respectively connected to opposite ends of the bottom plate 11 along the second preset direction. The projection of the third calibration surface 21 on the first sub-plate 20a on the second sub-plate 20b along the second preset direction does not overlap with the third calibration surface 21 on the second sub-plate 20b.
[0039] That is, along the height direction of the comparison plate 100, the third calibration surface 21 on the first sub-plate 20a is arranged below the bottom plate 11, and the third calibration surface 21 on the second sub-plate 20b is arranged above the bottom plate 11. Based on this, when the tracker determines the position of the comparison plate 100, it can simultaneously identify it through the third calibration surfaces 21 on the first sub-plate 20a and the second sub-plate 20b, thereby further improving the accuracy of the calibration.
[0040] In one embodiment, if Figure 1 As shown, the comparison plate 100 further includes a fixing platform 40 , which is disposed at the connection between the bottom plate 11 and the second plate body 20 , and is respectively connected to the bottom plate 11 and the second plate body 20 to support the bottom plate 11 and the second plate body 20 .
[0041] In this way, the overall structural strength of the comparison board 100 can be improved, and the reliability of the connection between the components can be ensured.
[0042] Specifically, when two second plates 20 are provided, one or more fixing platforms 40 may be provided at the connection between each second plate 20 and the bottom plate 11 for support, thereby further improving the reliability of the structure. In order to achieve the flatness of the comparison board 100 when it is placed, the height of the two fixing platforms 40 may be adjusted, or the height of the end surface of the two second plates 20 protruding from the fixing platforms 40 away from the bottom plate 11 may be adjusted.
[0043] Furthermore, in one embodiment, the fixing platform 40 is bonded or screwed to the bottom plate 11 , so that the connection between the fixing platform 40 and the bottom plate 11 is simple and the connection strength between the two can be ensured.
[0044] Likewise, in one embodiment, the fixing platform 40 and the second plate body 20 are bonded or screwed together. Thus, the connection between the fixing platform 40 and the second plate body 20 is simple and the connection strength between the two can be ensured.
[0045] However, the present invention is not limited thereto. In other embodiments, the fixing platform 40 and the bottom plate 11 and the second plate body 20 may also be connected by other means, such as bonding and then screwing, etc. The specific arrangement may be reasonable according to actual needs.
[0046] In one embodiment, if Figure 2 As shown, the cover plate 12 is connected to a first connecting column 122, and the fixing platform 40 is connected to a second connecting column 41. The comparison plate 100 further includes a rotation shaft (not shown), which passes through the first connecting column 122 and the second connecting column 41 and is rotatably connected to the first connecting column 122 and the second connecting column 41.
[0047] In this way, the cover plate 12 can be rotated equivalent to the bottom plate 11, and the connection is simple and easy to form. At the same time, the processing of the bottom plate 11 can be reduced to avoid affecting the structure of the bottom plate 11.
[0048] Further, in one embodiment, if Figure 1 As shown, a handle 30 is connected to the surface of the cover plate 12 that is away from the second calibration surface 121. The handle 30 is configured to be able to drive the cover plate 12 to rotate in response to an external force. The cover plate 12 can be easily lifted by operating the handle 30, thereby greatly improving the efficiency of flipping the cover plate 12.
[0049] In one embodiment, the first plate 10 is a carbon fiber plate, and / or the second plate 20 is a carbon fiber plate. The carbon fiber structure is light and not easily deformed, so that the first plate 10 and the second plate 20 have good precision.
[0050] The present application also provides a tracking scanner, which includes a tracker, a scanner, and the comparison plate 100 described in any one of the above embodiments.
[0051] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0052] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.
Claims
1. A comparison plate, used in a tracking scanner, characterized in that: The comparison plate comprises a first plate body (10) and a second plate body (20), the first plate body (10) comprises a base plate (11) and two cover plates (12), the base plate (11) is provided with a first calibration surface (111), the two cover plates (12) are respectively arranged at two opposite ends of the base plate (11) along a first preset direction, and the two cover plates (12) are both rotatable relative to the base plate (11) to cooperate in opening or covering the first calibration surface (111), and the cover plate (12) has a second calibration surface (121) arranged close to the first calibration surface (111); The second plate body (20) is arranged at one end of the base plate (11) along a second preset direction and is connected to the base plate (11); the second plate body (20) has a third calibration surface (21); the third calibration surface (21) is used to cooperate with a tracker to determine the position of the comparison plate; the second preset direction is arranged at an angle to the first preset direction; Wherein, both the first calibration surface (111) and the second calibration surface (121) are provided with a silk screen, and the silk screen is used for calibration and reconstruction of the laser line.
2. The comparison plate according to claim 1, characterized in that: When the cover plate (12) rotates to an extreme position in a direction away from the base plate (11), the second calibration surface (121) and the first calibration surface (111) are located in the same plane.
3. The comparison plate according to claim 1, characterized in that: A handle (30) is connected to a surface of the cover plate (12) that is away from the second calibration surface (121), and the handle (30) is configured to be able to drive the cover plate (12) to rotate in response to an external force.
4. The comparison plate according to claim 1, characterized in that: The comparison plate further comprises a fixing platform (40), which is arranged at the connection between the base plate (11) and the second plate body (20), and is respectively connected to the base plate (11) and the second plate body (20) so as to support the base plate (11) and the second plate body (20).
5. The comparison plate according to claim 4, characterized in that: The cover plate (12) is connected to a first connecting column (122), and the fixing platform (40) is connected to a second connecting column (41); The comparison plate further comprises a rotating shaft, wherein the rotating shaft passes through the first connecting column (122) and the second connecting column (41), and is rotatably connected to the first connecting column (122) and the second connecting column (41).
6. The comparison plate according to claim 4, characterized in that: The fixing platform (40) is bonded or screwed to the bottom plate (11), and / or the fixing platform (40) is bonded or screwed to the second plate body (20).
7. The comparison plate according to claim 1, characterized in that: The first calibration plane (111) is perpendicular to the third calibration plane (21).
8. The comparison plate according to any one of claims 1 to 7, characterized in that: The number of the second plate bodies (20) is two, and they are respectively defined as a first sub-plate (20a) and a second sub-plate (20b); the first sub-plate (20a) and the second sub-plate (20b) are respectively connected to opposite ends of the bottom plate (11) along the second preset direction; Wherein, a projection of the third calibration surface (21) on the first sub-plate (20a) along the second preset direction on the second sub-plate (20b) does not overlap with the third calibration surface (21) on the second sub-plate (20b).
9. The comparison plate according to claim 1, characterized in that: The first plate body (10) is a carbon fiber plate, and / or the second plate body (20) is a carbon fiber plate.
10. A tracking scanner, characterized in that: The invention comprises a tracker, a scanner and a comparison plate as described in any one of claims 1 to 9.