Calibration device for scanning system and scanning system with calibration device

Abstract

The utility model discloses a calibration device used for a scanning system and a scanning system with the same, the calibration device used for the scanning system comprises a mounting seat, a movable support and a code marking piece, the movable support is movably mounted on the mounting seat along a first direction, and a plurality of moving positions with known positions are arranged in the first direction; the marking part is installed on the movable support, the marking part is provided with a plurality of marking positions with known position information, and the multiple marking positions of the marking part and the multiple moving positions of the movable support establish global marking coordinates. According to the calibration device for the scanning system provided by the utility model, global code coordinates can be well constructed in a space, so that the scanning assembly can well complete scanning at one time under the global code coordinates during scanning, and the scanning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of measurement technology, in particular to a calibration device for a scanning system and a scanning system having the same. Background Art

[0002] During the vehicle R&D and manufacturing process, large areas need to be scanned to collect R&D data, and handheld scanners are currently used to complete the corresponding scanning work. However, although the scanner can achieve the task of external surface scanning, the scanning range and coverage are limited; if a large space scan (such as a whole vehicle) is to be completed, it is impossible to complete the scan in a unified coordinate system at one time, and the only way to complete the scan in a unified coordinate system is to "stitch the shooting coordinate points and then scan the partitions", but this method is inefficient, which is also a pain point in the industry. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a calibration device for a scanning system, which can better construct a global code coordinate in space, so that the scanning component can better complete the scanning at one time under the global code coordinate when scanning, thereby improving the scanning efficiency.

[0004] According to an embodiment of the utility model, the calibration device for a scanning system includes: a mounting seat; a movable bracket, which is movably mounted on the mounting seat along a first direction and has a plurality of moving positions with known positions in the first direction; a marking piece, which is mounted on the moving bracket and has a plurality of marking positions with known position information, and the plurality of marking positions of the marking piece and the plurality of moving positions of the moving bracket establish global marking coordinates.

[0005] According to the calibration device for a scanning system in an embodiment of the utility model, by setting a marking piece with a plurality of marking positions with known position information, combined with a movable bracket with a plurality of movable positions with known coordinate positions in a first direction, a global marking coordinate can be better constructed in space, so that the scanning component can better complete the scanning at one time under the global marking coordinate during scanning, thereby improving the scanning efficiency.

[0006] In addition, the calibration device for a scanning system according to the utility model may also have the following additional technical features:

[0007] In some embodiments of the utility model, the coding component includes: a coding plate, which is installed on the movable bracket and has the coding position; a coordinate component, which can be identified by the scanning component and is installed at the coding position to construct coding information on the coding plate.

[0008] In some embodiments of the utility model, a plurality of coordinate members are provided, and each of the coordinate members is adjustably arranged at a coding position to construct a plurality of coding information on the coding plate, wherein the coding information is the arrangement position of at least one of the coordinate members.

[0009] In some embodiments of the present invention, the code position has an assembly groove, and the coordinate member is detachably installed in the assembly groove.

[0010] In some embodiments of the present invention, the coordinate member is cylindrical in shape, and the assembly groove is a circular groove that matches the shape of the coordinate member.

[0011] In some embodiments of the present invention, the coordinate member includes a main body and a coordinate point detachably mounted on the main body, the coordinate point is circular, and has a white inner ring area and a black outer ring area surrounding the outer periphery of the inner ring area.

[0012] In some embodiments of the present invention, the main body and the coordinate points are both magnetic elements.

[0013] In some embodiments of the present invention, the movable bracket includes a column extending along the second direction, the code piece is movably mounted on the column along the second direction, and the first direction and the second direction are perpendicular to each other.

[0014] In some embodiments of the present utility model, a slide rail extending along a first direction is provided on the mounting seat, and a slide groove cooperating with the slide rail is provided on the movable bracket.

[0015] In some embodiments of the present invention, a plurality of the code positions are arranged in a matrix.

[0016] The utility model also provides a scanning system having the calibration device of the above embodiment.

[0017] According to an embodiment of the utility model, the scanning system includes a calibration device, a scanning component and a processing unit. The scanning component is used to scan the object to be measured to obtain scanning data of the object to be measured under the global code coordinates. The processing unit is used to perform three-dimensional reconstruction of the scanning data under the global code coordinates within the global code coordinates to obtain three-dimensional data of the object to be measured.

[0018] That is to say, when the scanning component scans the object to be measured, since the scanning area of ​​the scanning component is limited each time, it is necessary to scan the object to be measured multiple times. Each time, the scanning data of two adjacent scans need to be spliced ​​so that the scanning data obtained by multiple scans can be spliced ​​as a whole to obtain the overall scanning information of the object to be measured. In the present application, a calibration device is set up so that the calibration code position can be obtained each time the scanning component scans, and the code positions of two adjacent groups of scanning data are spliced ​​to complete the splicing of multiple groups of scanning data, thereby obtaining the overall scanning information of the object to be measured. The operation is simple and convenient, and the scanning component can directly obtain the overall scanning information of the object to be measured after continuous scanning.

[0019] Therefore, according to the scanning system of the embodiment of the utility model, by being provided with the calibration device of the above embodiment, the scanning component can directly obtain the overall scanning information of the object to be measured after continuous scanning, and the operation is simple and convenient.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of a calibration device according to an embodiment of the utility model at one angle.

[0023] Figure 2 It is a structural schematic diagram of the calibration device according to another angle of the embodiment of the utility model.

[0024] Figure 3 It is a structural schematic diagram of a code plate of a calibration device according to an embodiment of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the main body and coordinate points of the calibration device according to an embodiment of the utility model.

[0026] Figure 5 It is a schematic diagram of the arrangement of coordinate components on a marking plate of a marking device according to an embodiment of the utility model.

[0027] Figure 6 It is a schematic diagram of another arrangement of coordinate components on a marking plate of a marking device according to an embodiment of the utility model.

[0028] Figure 7 Schematic diagram of a scanning system according to an embodiment of the utility model.

[0029] Reference numerals:

[0030] The calibration device 100, the mounting seat 1, the slide rail 11, the column 21, the code plate 31, the assembly groove 311, the main body 321, the coordinate point 322,

[0031] Scanning component 200 , object to be detected 300 , and scanning system 1000 . DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Reference below Figure 1-Figure 7 A calibration device 100 for a scanning system according to an embodiment of the present invention is described.

[0036] like Figure 1As shown, according to an embodiment of the utility model, the calibration device 100 for a scanning system includes a mounting base 1, a movable bracket and a marking piece. The movable bracket is movably mounted on the mounting base 1 along a first direction and has a plurality of moving positions with known positions in the first direction. The marking piece is mounted on the movable bracket and has a plurality of marking positions with known position information. The plurality of marking positions of the marking piece and the plurality of moving positions of the movable bracket establish global marking coordinates.

[0037] Reference Figure 1 and Figure 7 As a specific example shown, the first direction can refer to Figure 1 In the front and rear directions, when scanning the entire vehicle, the calibration device 100 can be set on one side of the vehicle, or two calibration devices 100 can be set, respectively on the left and right sides of the vehicle. For the convenience of explaining the present application, only the calibration device 100 set on one side of the vehicle is used as an example.

[0038] After the calibration device 100 is installed on one side of the vehicle, the mobile bracket moves along the front-to-back direction, and a marking piece is installed on the mobile bracket, and the marking piece has multiple marking positions with known position information. When the mobile bracket is at one position, since each position of the mobile bracket is also known, therefore, combined with the multiple marking positions with known position information on the marking piece, the local position information of the global marking coordinates that the marking piece can reflect when the mobile bracket is at this position can be obtained. Furthermore, since the mobile bracket can move in the first direction and has multiple moving positions with known positions in the first direction, the marking piece has corresponding local position information at multiple moving positions, and the global marking coordinates can be obtained by combining the multiple local position information.

[0039] During scanning, the code mark can move according to the movement of the scanning component 200, so that the scanning component 200 can determine the coordinate position under the global code coordinates in real time during the scanning operation. For example, the scanning component 200 includes a scanning component and a tracking component. The scanning component can move and scan along the outer surface of the object to be measured to obtain the scanning data of the object to be measured. The tracking component is used to capture the position characteristics of the scanning component under the global code coordinates to obtain the scanning data of the object to be measured under the global code coordinates, wherein the tracking component can move with the movement of the scanning component so that the scanning component and the object to be measured are always in the field of view of the tracking component, and the code mark can also move with the movement of the tracking component so that the code mark is always in the field of view of the tracking component. Therefore, when scanning the object to be measured, the scanning component can scan the object to be measured at one time, thereby obtaining multiple groups of scanning data, each group of scanning data has corresponding code position information, and the corresponding code position information in the multiple groups of scanning data is spliced, so that the overall scanning data of the object to be measured can be obtained.

[0040] In other words, taking the scanning component 200 as a video scan as an example, since the shooting range of the camera is limited, the object to be detected 300 can be photographed multiple times to obtain multiple groups of image information, and each group of image information has corresponding code information, so that multiple groups of images can be spliced ​​according to the code information to obtain a complete image information of the object to be detected 300.

[0041] Therefore, according to the calibration device 100 for a scanning system according to an embodiment of the utility model, by setting a marking piece with a plurality of marking positions with known position information, combined with a movable bracket with a plurality of movable positions with known coordinate positions in a first direction, a global marking coordinate can be better constructed in space, so that the scanning component 200 can better complete the scanning at one time under the global marking coordinate during scanning, thereby improving the scanning efficiency.

[0042] In some embodiments of the present invention, Figure 3-Figure 6 As shown, the code mark includes a code plate 31 and a coordinate member. The code plate 31 is installed on a mobile bracket. The code plate 31 has a code position. The coordinate member can be identified by the scanning component 200. The coordinate member is installed at the code position to construct position information on the code plate 31. In other words, the code plate 31 is a local area at each moving position. In this local area, the position of the coordinate point 322 on different code plates 31 can be different. Each different position is the position information of the coordinate member. In this way, after the scanning component 200 scans and constructs the scanning data in the local area corresponding to the object 300 to be detected, according to the different position information of the coordinate point 322, the two adjacent scanning data can be spliced. Similarly, after multiple scanning data are spliced, the whole vehicle scanning data of the object 300 to be detected can be obtained. The structure is simple, and the coordinate member on each code plate 31 can be easily obtained, thereby reducing the difficulty of scanning the object 300 to be detected.

[0043] Optionally, a plurality of coordinate members are provided, and each coordinate member is adjustably arranged at a coding position to construct a plurality of position information on the coding plate 31. That is to say, a plurality of coordinate members can be arranged in different ways or in different positions to construct a plurality of different position information on the coding plate 31. In this way, when the scanning component 200 identifies the position information on the coding plate 31, it can avoid the scanning component 200 from misidentifying the position information. For example, taking the scanning of the object 300 to be detected as an example, when the coding plate 31 is located at the front position of the vehicle, the position information constructed by the arrangement of the plurality of coordinate members on the coding plate 31 is the first position information, and when the coding plate 31 is located at the rear position of the vehicle, the position information constructed by the arrangement of the plurality of coordinate members on the coding plate 31 is the second position information. If the arrangement of the plurality of coordinate members under the first position information is the same as the arrangement of the plurality of coordinate members under the second position information, for example, the arrangement of the plurality of coordinate members under the first position information and the arrangement of the plurality of coordinate members under the second position information are both Figure 5 , the scanning component 200 may easily cause the scanning data of the front position of the vehicle to be spliced ​​with the scanning data of the rear position of the vehicle after scanning is completed, thereby causing a scanning failure of the object to be detected 300. Figure 5 As shown, the arrangement state of the plurality of coordinate elements of the second position information is Figure 6 As shown, when multiple sets of scan data are spliced, errors are less likely to occur, thereby effectively ensuring the reliability of the splicing of multiple sets of scan data.

[0044] Optionally, the position of the coordinate member may be adjusted automatically, that is, automatically controlled by a program, which can effectively reduce labor costs and operational difficulty.

[0045] Alternatively, if Figure 3-Figure 6 As shown, the marking position has an assembly groove 311, and the coordinate part can be detachably installed in the assembly groove 311. That is to say, the coordinate part can be disassembled and assembled by disassembly, so as to adjust the position of the coordinate part. In this way, there is no need to add control equipment, thereby reducing the manufacturing cost of the calibration device 100.

[0046] Alternatively, if Figure 3-Figure 6 As shown, the coordinate piece is cylindrical in shape, and the assembly groove 311 is a circular groove adapted to the shape of the coordinate piece. That is to say, within the vertical plane constructed in the front-to-back direction and the up-and-down direction, the coordinate piece is circular, thereby making the coordinate piece easy to identify and reducing the difficulty of disassembly and assembly.

[0047] In some embodiments of the present invention, Figure 3-Figure 6As shown, the coordinate member includes a main body 321 and a coordinate point 322 detachably mounted on the main body 321. The coordinate point 322 is circular and has a white inner ring area and a black outer ring area surrounding the outer periphery of the inner ring area. Thus, the coordinate point 322 can be configured into a black-bottomed white acquisition pattern, which can make the white inner ring area have a better pattern contrast, making the inner ring area more vivid and easy to identify. In addition, the black outer ring area as a background can absorb more light and reduce unnecessary reflection and interference, while the white inner ring area can reflect most of the light and is more easily received by the scanning component 200, ensuring that the position information obtained by scanning is clear, thereby improving the reliability of scanning data splicing.

[0048] Optionally, the main body 321 and the coordinate point 322 are both magnetic suction parts, thereby making the main body 321 and the coordinate point 322 easy to assemble and disassemble, and the connection is also more reliable.

[0049] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the movable bracket includes a column 21 extending along the second direction, and the marking piece is movably mounted on the column 21 along the second direction, and the first direction and the second direction are perpendicular to each other. That is, the movable bracket can move not only in the front-back direction, but also in the up-down direction, thereby increasing the movable space of the marking piece mounted on the movable bracket, and relatively, reducing the size of the marking piece, thereby reducing the production cost of the marking piece.

[0050] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the mounting base 1 is provided with a slide rail 11 extending in a first direction, and the movable bracket is provided with a slide groove cooperating with the slide rail 11. Thus, the cooperation between the slide rail 11 and the slide groove can make the movable bracket move stably on the mounting base 1, and can better ensure the position of the movable bracket in the left and right directions.

[0051] Optionally, the positions of the multiple marking codes are arranged in a determinant, thereby enabling the multiple scanning data to be better spliced ​​according to the positions of the marking codes, thereby better acquiring the scanning result of the object to be measured.

[0052] The structure of a specific calibration device 100 of the present invention is described below with reference to the accompanying drawings.

[0053] like Figure 1-Figure 6As shown, the calibration device 100 includes a mounting base 1, the mounting base 1 has a slide rail 11, the slide rail 11 is installed with a column 21, the column 21 is installed with a marking plate 31, the marking plate 31 has a plurality of assembly grooves 311 arranged in rows and columns, the main body 321 can be plugged into the assembly groove 311 in a plug-in manner, the main body 321 is a magnetic attraction part, the coordinate point 322 is also a magnetic attraction part, the coordinate point 322 can be installed on the main body 321, the main body 321 and the coordinate point 322 have multiple, the coordinate point 322 is circular, the circular coordinate point 322 has an inner ring area and an outer ring area, the outer ring area surrounds the outside of the inner ring area, the inner ring area is white, and the outer ring area is black.

[0054] Furthermore, the code plate 31 can be movably installed on the column 21 up and down, so that the code plate 31 does not need to be designed to be too large, which is conducive to reducing the production cost of the code plate 31.

[0055] The present invention further provides a scanning system 1000 having the calibration device 100 of the above embodiment.

[0056] like Figure 1 and Figure 7 As shown, the scanning system 1000 according to the embodiment of the utility model includes a calibration device 100, a scanning component 200 and a processing unit. The scanning component 200 is used to scan the object to be measured to obtain the scanning data of the object to be measured under the global code coordinates. The processing unit is used to perform three-dimensional reconstruction of the scanning data under the global code coordinates within the global code coordinates to obtain the three-dimensional data of the object to be measured.

[0057] That is to say, when the scanning component 200 scans the object to be measured, since the scanning area of ​​the scanning component 200 is limited each time, it is necessary to scan the object to be measured multiple times, and each time the scanning data of two adjacent scans need to be spliced, the scanning data obtained by the multiple scans can be spliced ​​as a whole to obtain the overall scanning information of the object to be measured. In the present application, a calibration device 100 is set up, so that the calibration code position can be obtained each time the scanning component 200 scans, and the code positions of two adjacent groups of scanning data are spliced ​​to complete the splicing of multiple groups of scanning data, thereby obtaining the overall scanning information of the object to be measured. The operation is simple and convenient, and the scanning component 200 can directly obtain the overall scanning information of the object to be measured after continuous scanning.

[0058] Therefore, according to the scanning system 1000 of the embodiment of the utility model, by being provided with the calibration device 100 of the above embodiment, the scanning component 200 can directly obtain the overall scanning information of the object to be measured after continuous scanning, and the operation is simple and convenient.

[0059] Other structures and operations of the calibration device 100 and the scanning system 1000 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0060] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A calibration device for a scanning system, characterized in that: include: Mounting seat; A movable bracket, the movable bracket is movably mounted on the mounting seat along a first direction and has a plurality of movable positions with known positions in the first direction; A coding component is installed on the mobile bracket, and the coding component has multiple coding positions with known position information. The multiple coding positions of the coding component and the multiple moving positions of the mobile bracket establish global coding coordinates.

2. The calibration device for a scanning system according to claim 1, characterized in that: The code piece includes: A code plate, the code plate is mounted on the movable bracket, and the code plate has the code position; A coordinate piece, which can be identified by a scanning component and is installed at the coding position to construct coding information on the coding plate.

3. The calibration device for a scanning system according to claim 2, characterized in that: There are multiple coordinate members, each of which is adjustably arranged at a code position to construct multiple code information on the code plate, and the code information is the arrangement position of at least one of the coordinate members.

4. The calibration device for a scanning system according to claim 3, characterized in that: The code position has an assembly groove, and the coordinate member is detachably installed in the assembly groove.

5. The calibration device for a scanning system according to claim 4, characterized in that: The coordinate member is cylindrical in shape, and the assembly groove is a circular groove that matches the shape of the coordinate member.

6. The calibration device for a scanning system according to claim 2, characterized in that: The coordinate member comprises a main body and a coordinate point detachably mounted on the main body. The coordinate point is circular and has a white inner ring area and a black outer ring area surrounding the outer peripheral side of the inner ring area.

7. The calibration device for a scanning system according to claim 6, characterized in that: The main body and the coordinate points are both magnetically attracted parts.

8. The calibration device for a scanning system according to claim 1, characterized in that: The movable bracket comprises a column extending along a second direction, and the code piece is movably mounted on the column along the second direction, and the first direction and the second direction are perpendicular to each other.

9. The calibration device for a scanning system according to claim 1, characterized in that: The mounting seat is provided with a slide rail extending along a first direction, and the movable bracket is provided with a slide groove matched with the slide rail.

10. The calibration device for a scanning system according to claim 1, characterized in that: The plurality of code positions are arranged in a matrix.

11. A scanning system, characterized in that: include: The calibration device according to any one of claims 1 to 10; A scanning component, wherein the scanning component is used to scan the object to be measured to obtain scanning data of the object to be measured under the global code coordinates; A processing unit is used to perform three-dimensional reconstruction of the scan data under the global code coordinates within the global code coordinates to obtain three-dimensional data of the object to be measured.

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