A 3D scanner with interchangeable filters

Abstract

This utility model discloses a 3D scanner with replaceable filters, comprising: an instrument body; a camera unit and a laser projection unit disposed within the instrument body, wherein the camera in the camera unit and the projection surface in the laser projection unit are both disposed on the measurement surface of the instrument body; and a supplementary lighting unit located around the camera and disposed on the measurement surface, wherein the filter unit in the supplementary lighting unit is detachably disposed at the front end of the light source assembly in the supplementary lighting unit. This utility model significantly improves the scanner's adaptability to different material surfaces and scanning quality through the design of replaceable filter units, optimizes image clarity and detail, and allows for flexible adjustment and rapid replacement of filters according to the characteristics of different materials.

Description

Technical Field

[0001] This utility model relates to the field of three-dimensional scanning technology, and in particular to a three-dimensional scanner with replaceable filters. Background Technology

[0002] Petrochemical equipment is prone to pitting corrosion and cracking due to its harsh operating environment. Currently, damage detection relies on manual visual inspection, which is inefficient and cannot meet the requirements for quantitative assessment.

[0003] In recent years, with the increasing complexity of equipment and the harshness of operating environments in the petrochemical industry, equipment damage detection has become a crucial link in ensuring production safety, improving equipment reliability, and extending equipment service life. However, traditional damage detection methods, such as manual visual inspection, suffer from problems such as low efficiency, strong subjectivity, and difficulty in quantitative assessment, and can no longer meet the demands of the modern petrochemical industry for high-precision and high-efficiency detection technologies.

[0004] 3D scanning technology, with its high precision, non-contact nature, and speed, has been widely applied in various fields. The acquired point cloud data simultaneously contains information such as the location, opening area, depth, and volume of defects. Combined with machine learning algorithms, automated damage identification can be performed. By calculating parameters such as the size of the damaged area (e.g., length, width, and depth) and the proportion of the damaged area, quantitative assessment of damage can be achieved, providing a scientific basis for equipment maintenance and repair. Comparing the data obtained from each scan with data in historical maintenance records allows for tracking the development trend of equipment damage and timely detection of potential safety hazards.

[0005] Current 3D scanning equipment uses white light, single red light, or single blue light as supplementary light sources. Different colors of light have different reflectivities on different materials. Monochromatic light cannot enhance the surface details of various materials and is difficult to adapt to the characteristics of different materials. This makes it impossible to optimize the scanning quality of specific materials, effectively reduce ambient light interference, and provide the highest scanning accuracy and resolution to adapt to different application scenarios. Utility Model Content

[0006] The purpose of this invention is to provide a 3D scanner with replaceable filter units, thereby solving the problem that the supplementary light source of existing 3D scanning equipment cannot adapt to the characteristics of different materials, thus failing to optimize the scanning quality of specific materials.

[0007] To address the aforementioned technical problems, this utility model provides a 3D scanner with replaceable filters, comprising: an instrument body; a camera unit and a laser projection unit disposed within the instrument body, wherein the camera in the camera unit and the projection surface in the laser projection unit are both disposed on the measurement surface of the instrument body; and a supplementary lighting unit located around the camera, wherein the filter unit in the supplementary lighting unit is detachably disposed at the front end of the light source assembly in the supplementary lighting unit.

[0008] Preferably, the supplementary lighting unit includes: a light source assembly disposed on the measuring surface and located around the camera; a filter unit disposed at the front end of the light source assembly; and a mounting frame with a connector, which uses a threaded connection between the connector and the measuring surface to mount the filter unit at the front end of the light source assembly.

[0009] Preferably, the mounting frame is a frame with two side lugs, and the filter unit is a circular filter.

[0010] Preferably, the light source assembly includes multiple light sources evenly distributed around the camera at preset intervals.

[0011] Preferably, the plurality of light sources are coaxially arranged with the camera at the annular filter.

[0012] Preferably, the light source is a white LED, wherein at least six white LED light sources are arranged around the same camera.

[0013] Preferably, the instrument body includes an integrally formed base, a handheld part, and a main body, wherein the main body is configured with the measuring surface.

[0014] Preferably, the main body includes: a base plate, the bottom end face of which is detachably connected to the top end face of the handheld part; a first main body, the bottom end face of which is detachably connected to the base plate; and a measuring surface cover plate detachably connected to the first main body, on which the measuring surface is formed.

[0015] Preferably, the measuring surface has a first groove portion and the measuring surface cover plate has a through hole portion, wherein each through hole in the through hole portion corresponds to each groove in the first groove portion, so that the camera and the laser projection probe pass through the groove and form a shooting surface and a projection surface at the corresponding through hole.

[0016] Preferably, the camera unit includes a first camera and a second camera distributed on both sides of the laser projection unit.

[0017] Preferably, the light source color and filter color of the filter unit are matched with the material of the device under test.

[0018] Preferably, the 3D scanner further includes: a power button, which is disposed on the non-measuring surface of the instrument body; and a data interface, which is disposed on the non-measuring surface of the instrument body, for providing an interface channel for transmitting the acquired 3D image data to external devices.

[0019] Compared with the prior art, one or more embodiments of the above solutions may have the following advantages or beneficial effects:

[0020] This invention proposes a 3D scanner with replaceable filters. The filter unit is detachably mounted on the measuring surface, allowing for filter replacement. This enables flexible adjustment and rapid replacement of filters based on the characteristics of different materials, significantly improving the 3D scanner's adaptability to various material surfaces and enhancing scanning quality. It also optimizes image clarity and detail, broadening its application range. Furthermore, the threaded connection design ensures secure filter installation and replacement, enhancing operational convenience.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used in conjunction with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the specific structure of a 3D scanner with replaceable filters according to an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the overall structure of a 3D scanner with replaceable filters according to an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the measurement surface of a 3D scanner with replaceable filters according to an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the supplementary lighting unit in a 3D scanner with replaceable filters according to an embodiment of this application.

[0027] Figure 5 This is a schematic diagram of the instrument body in the replaceable filter 3D scanner according to an embodiment of this application. Detailed Implementation

[0028] The following detailed description of the embodiments of this utility model, in conjunction with the accompanying drawings, will provide a thorough understanding of how this utility model uses technical means to solve technical problems and achieve technical effects, enabling its implementation. It should be noted that, provided there is no conflict, the various embodiments and features within them can be combined with each other, and all resulting technical solutions are within the protection scope of this utility model.

[0029] Furthermore, the steps illustrated in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than that shown here.

[0030] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms “a” and “an” as used herein are also intended to include the plural. It should also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, without excluding the presence or addition of one or more other features, integers, steps, operations, units, components, and / or combinations thereof.

[0031] Petrochemical equipment is prone to pitting corrosion and cracking due to its harsh operating environment. Currently, damage detection relies on manual visual inspection, which is inefficient and cannot meet the requirements for quantitative assessment.

[0032] In recent years, with the increasing complexity of equipment and the harshness of operating environments in the petrochemical industry, equipment damage detection has become a crucial link in ensuring production safety, improving equipment reliability, and extending equipment service life. However, traditional damage detection methods, such as manual visual inspection, suffer from problems such as low efficiency, strong subjectivity, and difficulty in quantitative assessment, and can no longer meet the demands of the modern petrochemical industry for high-precision and high-efficiency detection technologies.

[0033] 3D scanning technology, with its high precision, non-contact nature, and speed, has been widely applied in various fields. The acquired point cloud data simultaneously contains information such as the location, opening area, depth, and volume of defects. Combined with machine learning algorithms, automated damage identification can be performed. By calculating parameters such as the size of the damaged area (e.g., length, width, and depth) and the proportion of the damaged area, quantitative assessment of damage can be achieved, providing a scientific basis for equipment maintenance and repair. Comparing the data obtained from each scan with data in historical maintenance records allows for tracking the development trend of equipment damage and timely detection of potential safety hazards.

[0034] Current 3D scanning equipment uses white light, single red light, or single blue light as supplementary light sources. Different colors of light have different reflectivities on different materials. Monochromatic light cannot enhance the surface details of various materials and is difficult to adapt to the characteristics of different materials. This makes it impossible to optimize the scanning quality of specific materials, effectively reduce ambient light interference, and provide the highest scanning accuracy and resolution to adapt to different application scenarios.

[0035] Figure 1 This is a schematic diagram of the overall structure of a 3D scanner with replaceable filters according to an embodiment of this application. Figure 2 This is a schematic diagram illustrating the specific structure of a 3D scanner with replaceable filters according to an embodiment of this application. The following is in conjunction with... Figure 1 and Figure 2 The specific structure of the replaceable filter 3D scanner (hereinafter referred to as "3D scanner") described in the embodiments of this utility model will be explained.

[0036] like Figure 1 As shown, the 3D scanner includes: instrument body A, a camera unit (unnumbered) disposed within instrument body A, a laser projection unit B and a supplementary lighting unit (unnumbered) disposed within instrument body A. Instrument body A has a measurement surface.

[0037] The camera in the camera unit is set on the measuring surface of the instrument body A.

[0038] The projection surface of laser projection unit B is set on the measuring surface of instrument body A.

[0039] The supplementary lighting unit is located on the periphery of the camera. The supplementary lighting unit includes a filter unit C, which is detachably mounted at the front end of the light source assembly within the supplementary lighting unit.

[0040] In one embodiment, reference Figure 3 The camera unit includes: a first camera 1 and a second camera 2 distributed on both sides of the laser projection unit B.

[0041] Specifically, the first camera 1 and the second camera 2 are symmetrically arranged on the measurement surface. The laser projection unit C is located at the midpoint of the line connecting the first camera 1 and the second camera 2, and is used to assist in 3D modeling.

[0042] In one embodiment, reference Figure 3 The supplementary lighting unit includes: a light source assembly 3 disposed on the measuring surface and located around the camera, a filter unit disposed at the front end of the light source assembly, and a mounting frame 4.

[0043] The mounting frame 4 has a connector 5, and the mounting frame 4 sets the filter unit C at the front end of the light source assembly through a threaded connection between the connector 5 and the measuring surface.

[0044] The filtering unit is a circular annular filter 6. Optionally, in order to enable the filtering unit C to adapt to the characteristics of different material surfaces, the light source color and the filter color of the filtering unit C are preferably matched with the material of the device under test.

[0045] Among them, reference Figure 3 or Figure 4 The mounting frame 4 is a frame with ear plates on both sides.

[0046] The light source assembly 3 includes multiple light sources evenly distributed around the camera at preset intervals. These multiple light sources are coaxially positioned with the camera at the annular filter 6. Furthermore, the light sources are white LEDs. At least six white LED light sources are arranged around the same camera.

[0047] Specifically, the supplementary lighting unit consists of a filter unit C, a light source assembly 3, and a mounting frame 4. The filter unit C is a circular annular filter 6. The mounting frame 4 has a groove inside, and the circular annular filter 6 is fixed in the groove inside the mounting frame 4 by optical adhesive. Furthermore, to ensure the accuracy and integrity of the scan, multiple light sources are arranged around the circular annular filter 6 to ensure high-quality images are obtained under different lighting conditions. In particular, the inner diameter of the circular annular filter 6 is the same as the outer diameter of the camera.

[0048] Mounting frame 4 is a frame with lugs on both sides. The lugs have threaded holes, and the measuring surface also has countersunk threaded holes coaxially aligned with the threaded holes on the lugs. A single annular filter 6 can be connected by screwing it into the countersunk threaded hole on the measuring surface using two bolts that pass through the threaded holes in the lugs and lock it in place. This connection allows for disassembly when the filter unit C needs to be replaced. Specifically, to ensure coaxial accuracy, a tapered locating pin is provided on the measuring surface of mounting frame 4 that contacts the instrument body A to achieve automatic alignment during installation.

[0049] In one embodiment, reference Figure 2 or Figure 5 The instrument body A includes an integrally molded base 7, a handheld part 8, and a main body 9. The main body 9 has a measuring surface.

[0050] Further, refer to Figure 5 The main body 9 includes: a base plate 901, a first main body 902, and a measuring surface cover plate 903 detachably connected to the first main body. A measuring surface is formed on the measuring surface cover plate 903.

[0051] Specifically, the main body 9 consists of a base plate 901, a first main body 902, and a measuring face cover plate 903. The base plate 901 is integrally formed with the handheld part 8 and the base, ensuring the stability and durability of the structure. The first main body 902, the base plate 901, and the base 7 are connected by threads, ensuring a tight fit between the components. The measuring face cover plate 903 is equipped with brass screws, which are used to lock it to the first main body 902 and the base plate 901. A countersunk threaded hole is provided on the outer side of the measuring face cover plate 903 for connection with the filter unit.

[0052] Furthermore, refer to Figure 2 or Figure 5 The measuring surface has a first groove, and the measuring surface cover has a through hole. Each through hole in the through hole corresponds to each groove in the first groove, so that the camera and the laser projection probe pass through the groove and form the shooting surface and the projection surface at the corresponding through hole.

[0053] In one embodiment, reference Figure 2 The 3D scanner also includes a power button 10 and a data interface 11.

[0054] The power button 10 is located on the non-measuring surface of the instrument body A.

[0055] Data interface 11 is located on the non-measuring surface of the instrument body A. Data interface 11 provides an interface channel for transmitting the acquired 3D images to external devices.

[0056] Specifically, the 3D scanner also includes a power button located on a non-measuring surface (such as the top of the first body 902) and a data interface located on a non-measuring surface (such as the side of the first body 902), facilitating operation, power supply, and providing an interface channel for transmitting the acquired 3D images to external devices.

[0057] This invention proposes a 3D scanner with replaceable filters. The filter unit is detachably mounted on the measuring surface, allowing for filter replacement. This enables flexible adjustment and rapid replacement of filters based on the characteristics of different materials, significantly improving the 3D scanner's adaptability to various material surfaces and enhancing scanning quality. It also optimizes image clarity and detail, broadening its application range. Furthermore, the threaded connection design ensures secure filter installation and replacement, enhancing operational convenience.

[0058] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

[0059] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0061] It should be understood that the embodiments disclosed herein are not limited to the specific structures, processing steps, or materials disclosed herein, but should be extended to equivalent substitutions of these features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0062] The phrase "an embodiment" or "an embodiment" used in this specification means that a specific feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Therefore, the phrase "an embodiment" or "an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0063] Although the embodiments disclosed in this utility model are as described above, the content is merely for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model; however, the scope of patent protection of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A three-dimensional scanner with replaceable filters, characterized in that, include: Instrument body; The camera unit and laser projection unit are disposed within the main body of the instrument, wherein the camera in the camera unit and the projection surface in the laser projection unit are both disposed on the measuring surface of the main body of the instrument; A supplementary lighting unit is located on the periphery of the camera, wherein the filter unit in the supplementary lighting unit is detachably disposed at the front end of the light source assembly in the supplementary lighting unit.

2. The three-dimensional scanner according to claim 1, characterized in that, The supplementary lighting unit includes: A light source assembly disposed on the measuring surface and located around the camera; A filter unit disposed at the front end of the light source assembly; A mounting frame with connectors, which positions the filter unit at the front end of the light source assembly via a threaded connection between the connectors and the measuring surface.

3. The three-dimensional scanner according to claim 2, characterized in that, The mounting frame is a frame with lugs on both sides, and the filter unit is a circular filter.

4. The three-dimensional scanner according to claim 3, characterized in that, The light source assembly includes multiple light sources evenly distributed around the camera at preset intervals.

5. The three-dimensional scanner according to claim 4, characterized in that, The multiple light sources are coaxially arranged with the camera at the annular filter.

6. The three-dimensional scanner according to claim 4, characterized in that, The light source is a white LED, and at least six white LED light sources are arranged around the same camera.

7. The three-dimensional scanner according to any one of claims 1 to 6, characterized in that, The instrument body includes an integrally formed base, a handheld part, and a main body, wherein the main body is configured with the measuring surface.

8. The three-dimensional scanner according to claim 7, characterized in that, The main body includes: The bottom end face of the base plate is detachably connected to the top end face of the handheld part; The first main body has its bottom end face detachably connected to the base plate; A measuring surface cover plate is detachably connected to the first main body, and the measuring surface is formed thereon.

9. The three-dimensional scanner according to claim 8, characterized in that, The measuring surface has a first groove, and the measuring surface cover has a through hole. Each through hole in the through hole corresponds to each groove in the first groove, so that the camera and the laser projection probe pass through the groove and form a shooting surface and a projection surface at the corresponding through hole.

10. The three-dimensional scanner according to claim 9, characterized in that, The camera unit includes a first camera and a second camera distributed on both sides of the laser projection unit.

11. The three-dimensional scanner according to any one of claims 1 to 6, characterized in that, The light source color and filter color of the filter unit are respectively matched with the material of the device under test.

12. The three-dimensional scanner according to any one of claims 1 to 6, characterized in that, The 3D scanner also includes: The power button is located on a non-measuring surface of the instrument body. The data interface, located on the non-measuring surface of the instrument body, provides an interface channel for transmitting the acquired 3D image data to external devices.

Images