Section line acquisition device
By designing a cross-sectional line acquisition device including a line laser and an industrial camera, the problem of cross-sectional line data acquisition being disturbed by human factors in the prior art is solved, and a high-precision and high-efficiency non-contact cross-sectional line data acquisition is achieved.
Patent Information
- Application Number
- CN202421381415.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-17
AI Technical Summary
In the prior art, the cardboard contact tracing is used to obtain the cross-sectional line data of the object, which is disturbed by human factors, has large data errors, poor accuracy and reliability, unstable acquisition, low efficiency and limited use.
A cross-sectional line acquisition device is designed, including a housing, a projection unit, a collection unit and a control unit. The projection unit is composed of a plurality of line lasers and is arranged in a vertical direction; the acquisition unit is composed of two industrial cameras, arranged inclined to cover the projection range of the line laser. The laser line is emitted through the line laser, and the industrial camera captures and feeds back to the control unit, and analyzes and calculates the data forming continuous cross-sectional line.
It realizes high-precision and high-efficiency contactless acquisition of object surface cross-section lines, improves data accuracy and reliability, and is traceable, avoids interference from human factors.
Smart Images
Figure CN222579228U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of three-dimensional data acquisition, in particular to a cross-section line acquisition device. Background Art
[0002] Traditional methods of obtaining cross-sectional lines mostly use cardboard tracing. According to the shape of the object and the cross-sectional position to be measured, a corresponding cardboard template is made. Then, the cardboard template is pressed against the surface of the object, and the shape of the cross-sectional shape is traced on the surface of the object or on the drawing using drawing tools along the edge of the template.
[0003] The applicant has found that the prior art has at least the following technical problems:
[0004] The cross-sectional line data of an object is obtained by using a card plate contact line drawing measurement, which is interfered by human factors, has large data errors, poor data accuracy and reliability, high instability in data acquisition, low efficiency, and limitations in use. Utility Model Content
[0005] The purpose of the utility model is to provide a cross-section line acquisition device to solve the technical problems in the prior art of obtaining cross-section line data of an object by contact line drawing with a card plate, which is interfered by human factors, has large data errors, poor data accuracy and reliability, high instability in data acquisition, low efficiency, and limitations in use. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] The utility model provides a cross-sectional line acquisition device, comprising a shell, and a projection unit, an acquisition unit and a control unit arranged on the shell; the projection unit comprises a line laser, the number of the line lasers is multiple, and they are arranged in sequence on the front side of the shell along the vertical direction, so that the horizontal laser lines emitted by the line lasers are parallel to each other; the acquisition unit comprises an industrial camera, the number of the industrial cameras is two, and they are symmetrically arranged at both ends of the projection unit, and the industrial cameras are tilted so that the shooting range of the two industrial cameras can completely cover the projection range of all the line lasers.
[0008] Preferably, the angle between the optical axis of the industrial camera and the optical axis of the line laser is 35°.
[0009] Preferably, the projection unit further comprises a first mounting seat, which is used to mount the line laser and is connected to the inner wall of the housing.
[0010] Preferably, the acquisition unit further includes a second mounting seat, which is used to mount the industrial camera and is connected to the inner wall of the shell.
[0011] Preferably, the shell is a cubic structure, and the front side of the shell is recessed inward to form a working area, and the working area includes a flat surface and an inclined surface, the flat surface is arranged parallel to the front side of the shell, and a first opening is provided on the flat surface for the horizontal laser line of the line laser to pass through, and the inclined surfaces are symmetrically arranged at both ends of the flat surface, and a second opening is provided for the shooting light of the industrial camera to pass through, and the first opening and the second opening are respectively closed by filters.
[0012] Preferably, the number of the line lasers is eleven.
[0013] Preferably, the acquisition unit further includes a fill light, and the fill light is plural in number and arranged around the outer edge of the industrial camera.
[0014] Preferably, a power switch and a functional interface are provided on the back side of the shell, and the power switch and the functional interface of the line laser and the industrial camera are electrically connected to the control unit respectively.
[0015] The preferred technical solution of the utility model can also produce at least the following technical effects:
[0016] The utility model effectively avoids the technical problems existing in the prior art of obtaining cross-sectional line data of an object by contact-type line drawing with a card board, which is interfered by human factors, has large data errors, poor data accuracy and reliability, high instability in data acquisition, low efficiency, and limitations in use. The utility model provides a cross-sectional line acquisition device, including a shell, and a projection unit, a collection unit, and a control unit arranged on the shell; the shell is a cubic structure; the projection unit includes a line laser, the number of which is multiple, and they are arranged in sequence on the front of the shell in the vertical direction so that the horizontal laser lines emitted by the line laser are parallel to each other; the collection unit includes an industrial camera, the number of which is two, and they are symmetrically arranged at both ends of the projection unit, and the industrial cameras are tilted so that the shooting range of the two industrial cameras can completely cover the projection range of all line lasers. The utility model realizes non-contact collection of cross-sectional lines on the surface of an object through the synergistic effect of the line laser, the industrial camera, and the control unit. That is, multiple line lasers simultaneously emit laser lines to the surface of an object, and the laser lines deform as the shape of the object's surface changes. Then, based on the principle of binocular stereo vision, the industrial camera captures the projection image of the laser lines emitted by the line lasers on the object and feeds it back to the control unit. The control unit analyzes and calculates to obtain the linear three-dimensional information projected by the laser lines to form continuous cross-sectional line data, thereby achieving high-precision and high-efficiency cross-sectional line data acquisition, improving the accuracy and reliability of data acquisition, and having traceability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a structural schematic diagram of a cross-section line acquisition device provided by the utility model;
[0019] Figure 2 It is a cross-sectional view of a cross-sectional line acquisition device provided by the utility model.
[0020] In the figure:
[0021] 1. Shell; 11. Front; 12. Flat surface; 121. First opening; 122. First filter; 13. Inclined surface; 131. Second opening; 132. Second filter; 14. Back; 15. Support column; 2. Line laser; 3. Industrial camera; 4. Fill light; 5. Power switch; 6. Functional interface; 7. First mounting seat; 8. Second mounting seat; 9. Object. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0023] like Figure 1-Figure 2 As shown, the utility model provides a cross-sectional line acquisition device, including a shell 1, and a projection unit, an acquisition unit and a control unit arranged on the shell 1; the shell 1 is a cubic structure; the projection unit includes a line laser 2, and the number of the line lasers 2 is multiple, and they are arranged in sequence on the front side 11 of the shell 1 along the vertical direction, so that the horizontal laser lines emitted by the line lasers 2 are parallel to each other; the acquisition unit includes an industrial camera 3, the number of the industrial cameras 3 is two, and they are symmetrically arranged at both ends of the projection unit, and the industrial cameras 3 are tilted so that the shooting range of the two industrial cameras 3 can completely cover the projection range of all line lasers 2.
[0024] The utility model realizes non-contact acquisition of the cross-sectional lines on the surface of the object 9 through the synergistic effect of the line laser 2, the industrial camera 3 and the control unit. That is, multiple line lasers 2 simultaneously emit laser lines to the surface of the object 9, and the laser lines are deformed as the shape of the surface of the object 9 changes. The industrial camera 3 captures the projection image of the laser lines emitted by the line lasers 2 on the object 9 based on the principle of binocular stereo vision, and feeds it back to the control unit. The three-dimensional data analysis system of the control unit analyzes and calculates to obtain the linear three-dimensional information projected by the laser lines to form continuous cross-sectional line data, realize high-precision and high-efficiency cross-sectional line data acquisition, improve the accuracy and reliability of data acquisition, and has traceability.
[0025] As an optional implementation, the angle between the optical axis of the industrial camera 3 and the optical axis of the line laser 2 is 35°, so as to ensure that the industrial camera 3 can completely capture all linear three-dimensional information projected by the line laser 2 on the surface of the object 9.
[0026] As an optional implementation, the projection unit further includes a first mounting seat 7 , which is used to mount the line laser 2 and is connected to the inner wall of the housing 1 through a support column 15 .
[0027] Furthermore, support columns 15 are arranged on both sides of the first mounting seat 7 , and the first mounting seat 7 is connected to the support columns 15 by bolts to improve the stability of the connection between the line laser 2 and the housing 1 .
[0028] As an optional implementation, the acquisition unit further includes a second mounting seat 8 , which is used to mount the industrial camera 3 and is connected to the inner wall of the housing 1 via a support column 15 .
[0029] Furthermore, the support columns 15 are arranged on both sides of the second mounting seat 8 , and the second mounting seat 8 is connected to the support columns 15 by bolts to improve the stability of the connection between the industrial camera 3 and the housing 1 .
[0030] As an optional implementation, the shell 1 is a cubic structure, and the front side 11 of the shell 1 is recessed inward to form a working area, which includes a flat surface 12 and an inclined surface 13. The flat surface 12 is arranged parallel to the front side 11 of the shell 1, and a first opening 121 is provided on the flat surface 12 for the horizontal laser line of the line laser 2 to pass through. The inclined surfaces 13 are symmetrically arranged at both ends of the flat surface, and a second opening 131 is provided for the shooting light of the industrial camera 3 to pass through. The first opening 121 and the second opening 131 are respectively closed by filters.
[0031] Furthermore, the first opening 121 is closed by a first filter 122, which can effectively prevent dust and other impurities from entering the interior of the housing 1 through the first opening 121, thereby protecting the internal devices such as the line laser 2 from contamination, and can also filter out interference of other ambient light on the light source of the line laser 2, thereby improving the clarity of the laser line.
[0032] The second opening 131 is closed by a second filter 132. The second filter 132 can effectively prevent dust and other impurities from entering the interior of the housing 1 through the second opening 131, thereby protecting internal devices such as the industrial camera 3 from contamination. It can also control the wavelength of the light source so that the industrial camera 3 can capture clear and accurate images.
[0033] The housing 1 is a cubic structure with strong stability, so that the housing 1 is not easy to tip over or move during operation, thereby ensuring the accuracy and stability of data collection and facilitating the placement and movement of the device.
[0034] As an optional implementation, the number of line lasers 2 is eleven.
[0035] As an optional implementation, the acquisition unit further includes a fill light 4 , and the fill light 4 is multiple in number and arranged around the outer edge of the industrial camera 3 .
[0036] The function of the fill light 4 is to provide an additional light source for the industrial camera 3 in the case of insufficient or complex light, so as to ensure that it can capture clear and accurate linear three-dimensional information. The number of the fill light 4 can be set according to the use requirements.
[0037] As an optional implementation, a power switch 5 and a functional interface 6 are provided on the back side 14 of the housing 1 , and the line laser 2 , the industrial camera 3 , the power switch and the functional interface are electrically connected to the control unit respectively.
[0038] The power switch 5 is used to control the power on and off of the entire device.
[0039] The type and quantity of the functional interface 6 are set according to the use requirements, and the functional interface 6 includes a power interface, a USB interface, an Ethernet interface, etc. Among them, the specific circuit connection relationship between the line laser 2, the industrial camera 3, the power switch and the functional interface and the control unit is the existing technology, which will not be described in detail here.
[0040] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.
[0041] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0042] In the description of the present invention, it is also necessary to explain 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "an example" 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 present application. 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 may be combined in any one or more embodiments or examples in a suitable manner.
[0044] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A cross-section line acquisition device, characterized in that: It comprises a shell, and a projection unit, a collection unit and a control unit arranged on the shell; the shell is a cubic structure; the projection unit comprises a line laser, the number of the line lasers is multiple, and the line lasers are arranged in sequence on the front side of the shell along the vertical direction, so that the horizontal laser lines emitted by the line lasers are parallel to each other; the collection unit comprises an industrial camera, the number of the industrial cameras is two, and the industrial cameras are symmetrically arranged at both ends of the projection unit, and the industrial cameras are tilted so that the shooting range of the two industrial cameras can completely cover the projection range of all the line lasers.
2. A cross-section line acquisition device according to claim 1, characterized in that: The angle between the optical axis of the industrial camera and the optical axis of the line laser is 35°.
3. A cross-section line acquisition device according to claim 2, characterized in that: The projection unit further comprises a first mounting seat, which is used to mount the line laser and is connected to the inner wall of the housing through a supporting column.
4. A cross-section line acquisition device according to claim 3, characterized in that: The acquisition unit also includes a second mounting seat, which is used to mount the industrial camera and is connected to the inner wall of the shell through a supporting column.
5. A cross-section line acquisition device according to claim 4, characterized in that: The shell is a cubic structure, and the front side of the shell is recessed inward to form a working area, and the working area includes a flat surface and an inclined surface, the flat surface is arranged parallel to the front side of the shell, and a first opening is provided on the flat surface for the horizontal laser line of the line laser to pass through, and the inclined surfaces are symmetrically arranged at both ends of the flat surface, and a second opening is provided for the shooting light of the industrial camera to pass through, and the first opening and the second opening are respectively closed by filters.
6. A cross-section line acquisition device according to claim 1, characterized in that: The number of the line lasers is eleven.
7. A cross-section line acquisition device according to claim 1, characterized in that: The acquisition unit further includes a fill light, and the fill light is in multiple numbers and arranged around the outer edge of the industrial camera.
8. The cross-section line acquisition device according to claim 5, characterized in that: A power switch and a functional interface are arranged on the back of the shell, and the line laser, the industrial camera, the power switch and the functional interface are electrically connected to the control unit respectively.