Standard gauge block for measuring industrial three-dimensional part

Abstract

The invention relates to the technical field of industrial three-dimensional part measurement, and discloses a standard gauge block for measuring an industrial three-dimensional part, which comprises a measurement standard block body and a measurement system of mobile phone software, a color block is arranged outside the measurement standard block body, a two-dimensional code is installed outside the measurement standard block body, and the color block is connected with the two-dimensional code. And a magnetic attraction block is fixedly mounted in the measurement standard block body. According to the standard gauge block for measuring the industrial three-dimensional part, through combination of software and hardware, a measurement standard block body with a standard size is firstly created, and through photographing of mobile phone software, image processing and recognition, algorithm addition and spatial three-dimensional calculation of the measurement standard block body, the size of the part in each direction in a picture is calculated; if the shot part is an article trained by the system, automatically marking the length, width, height and key overall dimension of the part by software; if the part is a non-trained part, software automatically marks a line on the picture to mark measurement data, so that a user can conveniently and intuitively check and export the data.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial three-dimensional part measurement, in particular to a standard gauge block for measuring industrial three-dimensional parts. BACKGROUND

[0002] Industrial three-dimensional parts are three-dimensional entity components with independent functions in the fields of machinery, electronics, automobiles, etc., usually made of metal, non-metal or composite materials, formed by additive manufacturing or traditional processing technology, and the core features include: single unbreakable parts, with clear geometric shape and dimensional accuracy requirements, and currently the prepared parts need to be measured.

[0003] Currently, some measurement camera software has high requirements for mobile phone hardware, requires a depth camera, multiple cameras, and infrared ranging function, which is generally only available on high-end machines, and has large shooting accuracy error, large data fluctuation, and is not accurate. The shooting time is long, and the mobile phone needs to be moved along with the object length to measure the complete length. The object size measured by shooting is single, and only one direction can be measured, which leads to very inconvenient use. Therefore, a standard gauge block for measuring industrial three-dimensional parts is proposed to solve the above problems. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the shortcomings of the prior art, the present application provides a standard gauge block for measuring industrial three-dimensional parts, which has the advantages of more accurate measurement, more convenient operation, and higher intelligent degree. The problems of the current market, such as the requirement of measurement camera software for mobile phone hardware being too high, the need for a depth camera, multiple cameras, and infrared ranging function, which is generally only available on high-end machines, and the shooting accuracy error being large, the data fluctuation being large, and the shooting time being long, which requires the mobile phone to be moved along with the object length to measure the complete length, and the object size measured by shooting being single and only one direction being measured, which leads to very inconvenient use, are solved.

[0006] (II) Technical solutions

[0007] In order to achieve the above-mentioned purposes of more accurate measurement, more convenient operation, and higher intelligent degree, the present application provides the following technical solutions: a standard gauge block for measuring industrial three-dimensional parts, comprising a measurement standard block body and a measurement system of a mobile phone software, the measurement standard block body is externally provided with a color block, the measurement standard block body is externally provided with a two-dimensional code, and the measurement standard block body is internally fixedly provided with a magnetic block.

[0008] Preferably, the measuring standard block body is a cube, the measuring standard block body has a volume of 50mm*50mm*50mm, and the error of the measuring standard block body is 0.2mm.

[0009] Preferably, the color blocks are black and white, and the side length of the color blocks is one centimeter.

[0010] Preferably, the two-dimensional code is located in the middle of each color block, and three of the six faces of the measuring standard block body are black and white.

[0011] Preferably, the other three faces of the measuring standard block body are white, black, white, and black.

[0012] Preferably, the magnetic block is connected to the inner wall of the measuring standard block body.

[0013] Preferably, the measurement system of the mobile phone software includes a ToF sensor and a DLP projection module, and the measurement system of the mobile phone software uses image recognition algorithm to measure the three-dimensional size of the part automatically and mark the part by taking the measuring standard block body as a spatial reference.

[0014] Preferably, the ToF sensor has a thickness of 1mm, the wavelength of the DLP projection module is 450nm±10nm, the measuring standard block body adopts a 3D printing lightweight shell, the black and white grid pattern design enhances the image recognition contrast, and the magnetic block supports multi-angle adsorption and fixation.

[0015] Preferably, the measuring standard block body binds the measuring block and the mobile phone software through the two-dimensional code, the measurement system of the mobile phone software adopts a spatial stereo calculation algorithm to automatically output the complete size of the trained part, and marks the key measurement points of the untrained part by drawing lines, the measurement system of the mobile phone software is compatible with Android / iOS / Harmony system, supports air photography and multi-system data synchronization, and the minimum hardware requirement is a common smart phone. Advantages

[0016] Compared with the prior art, the present application provides a standard measuring block for measuring industrial three-dimensional parts, which has the following advantages: The standard measuring block for measuring industrial three-dimensional parts combines software and hardware to first create a standard measuring block body, takes a photo through a mobile phone software, processes and recognizes the image, and calculates the size of the part in each direction through the measuring standard block body by using an algorithm for spatial stereo calculation. The size of the part in each direction can be manually marked by drawing lines or automatically marked by drawing key contour lines. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The figure shows the distribution of the color blocks on three of the six faces of the measuring standard block. Figure 2 Another three-dimensional view of the color block of the measuring standard block of the present application is shown in the figure; Figure 3 A three-dimensional view of the measuring standard block of the present application is shown in the figure; Figure 4 A three-dimensional view of the measuring standard block of the present application is shown in the figure; Figure 5 A three-dimensional view of the measuring standard block of the present application is shown in the figure;

[0018] In the figure: 1 measuring standard block body, 2 color block, 3 two-dimensional code, 4 magnetic suction block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Please refer to Figures 1-5 A standard gauge for measuring industrial three-dimensional parts, comprising a measuring standard block body 1 and a mobile phone software measuring system, the outside of the measuring standard block body 1 is provided with a color block 2, the outside of the measuring standard block body 1 is provided with a two-dimensional code 3, and the inside of the measuring standard block body 1 is fixedly provided with a magnetic suction block 4.

[0021] Specifically, the measuring standard block body 1 is a 150mm³ cube reference, providing a spatial size reference, with an error of ≤0.2mm, standardized size eliminating mobile phone hardware differences, reducing the dependence of the measuring system on high-end cameras, the color block 2 is black and white with a checkered pattern with a side length of 1cm, covering the surface of the hexahedron, enhancing the image recognition contrast, assisting the algorithm to quickly locate the spatial coordinates, the two-dimensional code 3 is integrated in the center of the color block 2, binding the mobile phone software, realizing the data intercommunication between the gauge and the software, supporting device management and measurement traceability, the magnetic suction block 4 is connected with the inner wall of the measuring standard block body 1, the magnetic suction block 4 is embedded in the measuring standard block body 1, multi-angle suction, simplifying the measurement positioning process, and adapting to the fixing of complex workpiece surfaces. EMBODIMENT

[0022] The measuring standard block body 1 is a cube, the volume of the measuring standard block body 1 is 50mm*50mm*50mm, and the error of the measuring standard block body 1 is 0.2mm.

[0023] In this embodiment, the 50mm³ cube reference provides a spatial size reference, with an error of ≤0.2mm, standardized size eliminating mobile phone hardware differences, reducing the dependence of the measuring system on high-end cameras.

[0024] In Figure 1 and Figure 2 , the color block 2 is black and white, the side length of the color block 2 is one centimeter, the two-dimensional code 3 is located in the middle of each color block 2, and three of the six surfaces of the measurement standard block body 1 are black and white, and the other three surfaces are white, black, white, and black.

[0025] In this embodiment, the color block 2 is black and white, covers the surface of the hexahedron, enhances the image recognition contrast, assists the algorithm to quickly locate the spatial coordinates, the two-dimensional code 3 is integrated in the center of the color block 2, binds the mobile phone software, realizes the data intercommunication of the gauge and the software, and supports equipment management and measurement traceability.

[0026] Hexahedron pattern distribution: Surface type Pattern layout Function description Reference surface A Black white black white black Main measurement surface Reference surface B White black white black white Auxiliary calibration surface In Figure 3 and Figure 4 , the magnetic block 4 is connected with the inner wall of the measurement standard block body 1.

[0027] In this embodiment, the magnetic block 4 is embedded in the measurement standard block body 1, and multi-angle adsorption is realized to simplify the measurement and positioning process and adapt to the fixing of complex workpiece surfaces.

[0028] Technical parameters of the magnetic block Neodymium iron boron magnet N52, embedded depth 2mm, adsorption force≥3kgf. Embodiment

[0029] In Figure 5 , the measurement system of the mobile phone software includes a ToF sensor and a DLP projection module, and the measurement system of the mobile phone software realizes automatic measurement and labeling of three-dimensional dimensions of the part by taking the measurement standard block body 1 as a spatial reference through an image recognition algorithm.

[0030] In this embodiment, the ToF sensor has a thickness of 1mm, depth information is obtained through time-of-flight ranging technology, and the ultra-thin design avoids shielding the measured object to realize non-contact three-dimensional spatial positioning.

[0031] In Figure 5 , the ToF sensor has a thickness of 1mm, the wavelength of the DLP projection module is 450nm±10nm, the measurement standard block body 1 adopts a 3D printing lightweight shell, the black and white pattern design enhances the image recognition contrast, and the magnetic block 4 supports multi-angle adsorption and fixation.

[0032] In this embodiment, The wavelength of the DLP projection module is 450nm±10nm, the structured light spot projection assists three-dimensional reconstruction, the specific wavelength optimizes the optical recognition stability, and the environmental light interference is reduced.

[0033] In Figure 1And Figure 5 In the measurement standard block body 1, the block is bound with the mobile phone software through the above-mentioned two-dimensional code 3, the measurement system of the mobile phone software adopts a space stereoscopic calculation algorithm, and complete dimensions of a trained part are automatically output, and a non-trained part is marked with key measurement points through line marking. The measurement system of the mobile phone software is compatible with Android / iOS / Harmony systems, supports aerial shooting and multi-system data synchronization, and the minimum hardware requirement is a common smart phone. The measurement system of the mobile phone software supports a one-key elimination block image function, and after measurement is completed, the display of the block in the photo can be manually or automatically removed, so as to ensure the main position of the target object in the picture.

[0034] In the embodiment, an image recognition algorithm is used to perform stereoscopic calculation with the standard block as a space reference, convert physical dimensions into digital coordinates, and realize sub-millimeter level measurement accuracy.

[0035] In addition, it also includes:‌part intelligent annotation‌ ‌trained parts‌: automatically output complete three-dimensional dimension data; ‌non-trained parts‌: mark key measurement points through line marking, and support manual supplement; Compatible with known / unknown part measurement requirements, and reduce the use threshold.

[0036] ‌Cross-platform data synchronization‌, supports Android / iOS / Harmony three-end intercommunication, realizes cloud measurement record sharing and collaborative annotation. Embodiment

[0037] Space stereoscopic calculation algorithm and implementation steps of the mobile phone software measurement system:‌ Algorithm implementation steps‌ 1‌trained part processing flow‌ 101‌image acquisition‌: acquire part images containing a 50mm³ reference object of a standard block through multi-angle shooting; 102‌feature matching‌: compare the training model in the database to identify the geometric features of the known part; 103‌automatic output‌: directly generate a complete three-dimensional dimension report according to the space mapping relationship.

[0038] 2‌non-trained part processing flow‌ 201‌key point annotation‌: the user manually marks the contour boundary to be measured by line marking; 202‌algorithm assistance‌: the system automatically calculates the actual distance between the marked points based on the standard block scale; 203‌data synthesis‌: integrate multi-angle marking results to generate local dimension data.

[0039] Space stereoscopic calculation algorithm formula: 1. Basic space mapping formula Actual size = ×50mm (Based on a standard gauge block with a side length of 50mm, the conversion is performed proportionally) 2. Formula for 3D coordinate reconstruction

[0040] Image pixel coordinates Optical center coordinates f: Camera focal length L: Depth value measured by the ToF sensor 3. Multi-view data fusion formula

[0041] The rotation matrix and translation vector of the i-th viewpoint Weighting coefficients assigned based on shooting angle The function of measuring standard block body 1 Provides absolute size reference, eliminates the influence of camera distortion, and uses black and white grid patterns as feature points to improve matching accuracy; Cross-platform compatibility: Measurement data is synchronized across Android, iOS, and HarmonyOS systems via QR code binding, requiring only the minimum hardware requirements of a regular smartphone. Error control mechanism: The algorithm automatically compensates for the interference of ambient light on DLP projection at 450nm±10nm, and the weighted average of multi-angle measurement results reduces random errors.

[0042] In summary, the use of this standard gauge block for measuring industrial three-dimensional parts requires three stages: preliminary preparation, actual measurement, and data processing. The specific steps are as follows: Step 1: Preliminary Preparations 101. Scan and bind: Open the mobile measurement software, use the scan function to scan the unique QR code 3 on the measurement standard block body 1 to bind the measurement standard block body 1 with the mobile software for subsequent data association and transmission; 102 Positioning Activation: Enable the positioning function of the measurement standard block body 1 photo system, and simultaneously turn on the mobile phone's location service to ensure that the location information of the measurement standard block body 1 is accurately recorded in the software, facilitating subsequent retrieval and management, and preventing loss; Step 2: Actual Measurement 201 Placement of Measurement Standard Block 1: According to the measurement requirements of the part, use the magnetic function of Measurement Standard Block 1 to attach it to a suitable position on the part. For example, when measuring a top object, attach it directly to the top; or place it next to the part, ensuring that Measurement Standard Block 1 is placed stably and that its black and white grid surface faces the shooting direction. 202 Multi-angle shooting: Take pictures from multiple angles and different orientations around the part and the measuring standard block body 1, ensuring that each part and the measuring standard block body 1 is clearly and completely presented in the photo, providing sufficient image data for subsequent multi-directional measurement; 203 Trigger measurement: Click the measurement button in the phone software, and the software automatically processes and recognizes the photographed image. Based on the standard size of the measuring standard block body 1 and the spatial three-dimensional calculation algorithm, the length, width, and height of the part in the photo are calculated; Step 3: Data processing 301 Automatic labeling: If the photographed part is a trained item by the system, the software automatically labels the length, width, and height of the part and the key contour size. If it is a non-trained part, the software automatically draws lines on the photo to mark the measurement data, making it easy for users to visually check; 302 Manual adjustment: Users can manually draw lines and mark on the software according to actual needs, supplement or correct the automatically labeled data, and ensure accurate measurement results.

[0043] 303 Data export: After measurement, select the data export function in the software to export and save the measurement data in formats such as pictures and documents for subsequent analysis, archiving, or sharing.

[0044] In addition, the technical breakthrough of the standard gauge block for measuring industrial three-dimensional parts: 1 Hardware universality Only a normal smartphone camera is required, solving the dependence on traditional solutions for depth cameras / multiple cameras; 2 Efficiency improvement Multi-angle adsorption fixation design shortens positioning time, and single measurement process is completed within 30 seconds Precision guarantee. 3 Based on the spatial mapping of a 50mm³ standard gauge block, the overall error is controlled within ±0.2mm.

[0045] In addition, the measuring standard block body 150mm³ cube reference provides a spatial size reference with an error of ≤0.2mm. Standardized size eliminates the difference in smartphone hardware, reducing the dependence of the measurement system on high-end cameras. Color block 2, with black and white interlaced grid patterns 1cm in length, covers the surface of the hexahedron, enhancing image recognition contrast and assisting algorithms in quickly locating spatial coordinates. Two-dimensional code 3 is integrated in the center of color block 2, binding with the phone software to realize data exchange between the gauge block and the software, supporting device management and measurement traceability. Magnetic block 4 is connected to the inner wall of the measuring standard block body 1. Magnetic block 4 is embedded in the measuring standard block body 1, providing multi-angle adsorption to simplify the measurement positioning process and adapt to complex workpiece surface fixation.

[0046] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0047] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, numerous modifications are possible without departing from the spirit and scope of the present application as delineated by the claims and their equivalents.

Claims

1. A gauge for measuring industrial three-dimensional parts, comprising a measuring gauge body (1) and a measuring system of a mobile phone software, characterized in that: The outside of the measuring standard block body (1) is provided with color blocks (2), the outside of the measuring standard block body (1) is installed with two-dimensional codes (3), and the inside of the measuring standard block body (1) is fixedly installed with magnetic attraction blocks (4).

2. A gauge block for measuring industrial three-dimensional parts according to claim 1, wherein: The measuring standard block body (1) is a cube, the volume of the measuring standard block body (1) is 50mm*50mm*50mm, and the error of the measuring standard block body (1) is 0.2mm.

3. A gauge block for measuring industrial three-dimensional parts according to claim 1, wherein: The color blocks (2) are black and white, and the side length of the color blocks (2) is one centimeter.

4. A gauge block for measuring industrial three-dimensional parts according to claim 1, wherein: The two-dimensional codes (3) are located in the middle of each color block (2), and three sides of the measuring standard block body (1) are black and white.

5. A gauge block for measuring industrial three-dimensional parts according to claim 1, wherein: The other three sides of the measuring standard block body (1) are white, black, white and black.

6. A gauge block for measuring industrial three-dimensional parts according to claim 1, wherein: The magnetic attraction blocks (4) are connected with the inner walls of the measuring standard block body (1).

7. A gauge block for measuring industrial three-dimensional parts according to claim 1, wherein: The measurement system of the mobile phone software includes a ToF sensor and a DLP projection module, and the measurement system of the mobile phone software realizes automatic measurement and labeling of three-dimensional dimensions of parts by taking the measuring standard block body (1) as a spatial reference through an image recognition algorithm.

8. A gauge block for measuring industrial three-dimensional parts according to claim 1, wherein: The thickness of the ToF sensor is 1mm, the wavelength of the DLP projection module is 450nm±10nm, the measuring standard block body (1) adopts a 3D printing lightweight shell, a black and white grid design enhances the image recognition contrast, and the magnetic attraction block (4) supports multi-angle adsorption and fixation.

9. A gauge block for measuring industrial three-dimensional parts according to claim 1, wherein: The measuring standard block body (1) binds the gauge block and the mobile phone software through the two-dimensional code (3), the measurement system of the mobile phone software adopts a spatial stereo calculation algorithm, automatically outputs complete dimensions of trained parts, and marks key measurement points through line marking for untrained parts, the measurement system of the mobile phone software is compatible with Android / iOS / Harmony systems, supports air shooting and multi-system data synchronization, and the minimum hardware requirement is a common smart phone.

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