An impact specimen processing accuracy detection system and detection method

Abstract

The present invention provides an impact specimen processing precision detection system and a detection method, which relate to the technical field of measurement. The system includes a camera device and an identification and detection device. The camera device includes a front-view camera, a side-view camera, and a top-view camera. The front-view camera is used to be arranged in front of the specimen body to photograph the front of the specimen body. The side-view camera is used to be arranged on the left side or the right side of the specimen body to photograph the left side or the right side of the specimen body. The top-view camera is used to be arranged above the specimen body to photograph the top of the specimen body. The identification and detection device is connected to the front-view camera, the side-view camera, and the top-view camera. The identification and detection device is used to identify the captured images of the front-view camera, the side-view camera, and the top-view camera, and measure the captured images. According to the solution of the present invention, imaging of different surfaces of the specimen body can be realized through the front-view camera, the side-view camera, and the top-view camera of the camera device, and the identification and detection device identifies and measures the angles of the imaging, thereby improving the detection precision and efficiency.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and in particular, to an impact specimen processing precision detection system and a detection method. Background Art

[0002] When a steel mill is in production, it is necessary to detect the chemical composition and mechanical properties of steel to check whether the steel meets the quality requirements. The mechanical property detection items include impact tests. The specimens for impact tests must meet the dimensional requirements of relevant standards. Whether the processing precision of all impact specimens reaches the detection standard is the most important link.

[0003] There is a lack of detection devices on the existing processing platforms. Generally, after the impact specimens are processed, manual detection tools such as vernier calipers and micrometers are used for measurement, resulting in low measurement efficiency and large errors. Summary of the Invention

[0004] The present invention aims to solve the technical problems of low detection efficiency and low precision in the existing manual detection of the processing precision of impact specimens.

[0005] On the one hand, the present invention provides an impact specimen processing precision detection system, including a camera device and an identification and detection device. The camera device includes a front-view camera, a side-view camera, and a top-view camera. The front-view camera is used to be arranged in front of the specimen body to photograph the front of the specimen body. The side-view camera is used to be arranged on the left side or the right side of the specimen body to photograph the left side or the right side of the specimen body. The top-view camera is used to be arranged above the specimen body to photograph the top of the specimen body. The identification and detection device is connected to the front-view camera, the side-view camera, and the top-view camera. The identification and detection device is used to identify the photographed images of the front-view camera, the side-view camera, and the top-view camera, and perform dimensional measurement on the photographed images.

[0006] In the impact specimen processing precision detection system of the present invention, the front-view camera, the side-view camera, and the top-view camera of the camera device are respectively used to be located in different directions of the specimen body to image and display different surfaces of the specimen body. Exemplarily, the front, the right side, and the top of the specimen body can be photographed. The photographing results of the camera device are transmitted to the identification and detection device. The identification and detection device identifies the images and respectively measures relevant dimensions such as the length, height, and notch angle of the specimen body on the three photographed images, converting the existing direct measurement of the dimensions of the specimen body in a three-dimensional space with a scale into a two-dimensional plane measurement, which is convenient for measurement and has high precision. Moreover, the impact specimen processing precision detection system of the present invention has a higher degree of intelligence and improves the detection efficiency.

[0007] Optionally, the impact specimen processing precision detection system further includes a sample feeding mechanism and a specimen tray. The camera device is disposed at one end of the sample feeding mechanism. The specimen tray is used for placing the specimen body, and the specimen tray is arranged on the sample feeding mechanism. The sample feeding mechanism is used to drive the specimen tray to move towards the end close to the camera device, so that the specimen body is simultaneously within the shooting ranges of the front-view camera, the side-view camera, and the top-view camera.

[0008] Optionally, a first detection sensor is provided on the specimen tray. The first detection sensor is used to detect whether there is a specimen body on the specimen tray. The first detection sensor is connected to the sample feeding mechanism. When the first detection sensor detects that there is a specimen body on the specimen tray, the sample feeding mechanism drives the specimen tray to move along a first direction to a preset position.

[0009] Optionally, the impact specimen processing precision detection system further includes a specimen positioning device. The specimen positioning device is disposed on one side of the camera device. The specimen positioning device is used to position the specimen body that has moved to the preset position.

[0010] Optionally, a second detection sensor is provided on the specimen positioning device. The second detection sensor is connected to the camera device. The second detection sensor is used to detect whether the specimen body is positioned in place. When the second detection sensor detects that the specimen body is positioned in place, the camera device takes a picture of the specimen body.

[0011] Optionally, a limit card slot is provided on the specimen tray. The extending direction of the limit card slot is a second direction, and the second direction is perpendicular to the first direction. The specimen positioning device includes two telescopic cylinders, and the two telescopic cylinders are respectively located on both sides of the sample feeding mechanism. When the two telescopic cylinders extend and retract to push the specimen body to move along the second direction to position the specimen body, the telescopic cylinders retract.

[0012] Optionally, the impact specimen processing precision detection system further includes a camera position adjustment device. The front-view camera, the side-view camera, and the top-view camera are respectively connected to the corresponding camera position adjustment devices.

[0013] Optionally, the recognition and detection device includes an image recognition module and a measurement module. The camera device is connected to the image recognition module, and the image recognition module is connected to the measurement module.

[0014] Optionally, the recognition and detection device further includes a voice broadcast module. The voice broadcast module is connected to the measurement module.

[0015] On the other hand, the present invention also provides a method for detecting the machining accuracy of impact specimens. Using the above-mentioned impact specimen machining accuracy detection system, it includes the following steps:

[0016] S1: Place the specimen body within the shooting range of the camera device of the impact specimen machining accuracy detection system;

[0017] S2: The front-view camera, side-view camera, and top-view camera of the camera device respectively shoot three surfaces of the specimen body;

[0018] S3: The camera device transmits the captured images to the recognition and detection device of the impact specimen machining accuracy detection system;

[0019] S4: The recognition and detection device recognizes the captured images and detects the sizes of the captured images.

[0020] The advantages of the impact specimen machining accuracy detection method of the present invention compared with the prior art are the same as those of the above-mentioned impact specimen machining accuracy detection system, and will not be repeated here. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the impact specimen machining accuracy detection system according to an embodiment of the present invention;

[0022] Figure 2 It is an installation and usage diagram of the impact specimen machining accuracy detection system according to an embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the specimen body according to an embodiment of the present invention;

[0024] Figure 4 It is an image captured by the front-view camera according to an embodiment of the present invention;

[0025] Figure 5 It is an image captured by the side-view camera according to an embodiment of the present invention;

[0026] Figure 6 It is a flowchart of the impact specimen machining accuracy detection method according to an embodiment of the present invention.

[0027] Description of the Reference Numerals:

[0028] 1. Front-facing camera; 2. Side-facing camera; 3. Top-facing camera; 4. Camera position adjustment device; 5. Specimen feeding mechanism; 6. Specimen tray; 61. Limit card slot; 7. Specimen positioning device; 71. Telescopic cylinder; 8. Specimen body; 9. Frame; 10. Manipulator; L1. Specimen length; L2. Distance from the notch symmetry plane to the specimen end; h1. Specimen height; h2. Notch height; θ1. Notch angle; θ2. Angle between the longitudinal planes of the specimen; θ3. Angle from the notch symmetry plane to the specimen longitudinal axis; R. Notch root radius; w. Specimen width. Detailed implementation mode

[0029] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings.

[0030] In the description of the present invention, it should be noted that the term nouns indicating directions in each embodiment, such as "upper", "lower", "front", "rear", etc., are only used to simplify the description of the positional relationship based on the drawings in the specification, and do not represent that the indicated elements and devices must operate according to the specific directions and limited operations, methods, and structures described in the specification. Such directional nouns do not constitute a limitation to the present invention.

[0031] In addition, the terms "first" and "second" mentioned in the embodiments of the present invention are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0032] A coordinate system XYZ is set up in this article, where the positive direction of the X-axis represents the right direction, the negative direction of the X-axis represents the left direction, the positive direction of the Y-axis represents the front direction, the negative direction of the Y-axis represents the rear direction, the positive direction of the Z-axis represents the upper direction, and the negative direction of the Z-axis represents the lower direction.

[0033] As Figure 1-2 shown, an impact specimen processing accuracy detection system according to an embodiment of the present invention includes a camera device and an identification and detection device. The camera device includes a front-facing camera 1, a side-facing camera 2, and a top-facing camera 3. The front-facing camera 1 is used to be arranged in front of the specimen body 8 to photograph the front of the specimen body 8. The side-facing camera 2 is used to be arranged on the left side or the right side of the specimen body 8 to photograph the left side or the right side of the specimen body 8. The top-facing camera 3 is used to be arranged above the specimen body 8 to photograph the upper part of the specimen body 8. The identification and detection device is connected to the front-facing camera 1, the side-facing camera 2, and the top-facing camera 3. The identification and detection device is used to identify the photographed images of the front-facing camera 1, the side-facing camera 2, and the top-facing camera 3, and perform dimensional measurement on the photographed images.

[0034] In this embodiment, the test sample body is as Figure 3 shown, and is generally rectangular in shape. A V-shaped notch is provided in the upper part of the test sample body 8 along the width direction.

[0035] The front camera 1, the side camera 2 and the top camera 3 can be roughly located in front of, on the right side and above the test sample body 8. Adjust the positions of the front camera 1, the side camera 2 and the top camera 3 so that each camera faces the respective surface of the test sample body 8. The top camera 3 is used to correct the perpendicularity of the upper surface of the test sample body 8. By observing the top camera 3, it is determined whether the adjacent two sides of the upper surface of the test sample body 8 are perpendicular, that is, whether the imaging state requirements are met. Then, the front camera 1 and the side camera 2 are used to capture the front surface and the left side surface of the test sample body 8 respectively. The impact specimen machining accuracy detection system can be integrally placed on the frame 9.

[0036] The captured images can be subjected to data recognition and dimension measurement through the recognition detection device. Specifically, the image captured by the front camera 1 is as Figure 4 shown. By measurement, the specimen length L1, the distance L2 from the notch symmetry plane to the specimen end, the specimen height h1, the notch height h2, the notch angle θ1 and the notch root radius R can be obtained; the image captured by the side camera 2 is as Figure 5 shown. By measurement, the specimen height h1, the specimen width w, the included angle θ2 between the specimen longitudinal planes, and the angle θ3 from the notch symmetry plane to the specimen longitudinal axis can be obtained; by measuring the image captured by the top camera 3, the perpendicularity of the adjacent sides of the test sample body 8 can be determined.

[0037] It should be noted that the dimensions obtained through the above measurements are not the actual dimensions of the test sample body 8, and dimension conversion is also required according to basic parameters such as the camera focal length. Converting the existing method of directly measuring the dimensions of the test sample body in three-dimensional space into two-dimensional plane measurement is convenient and highly accurate. Moreover, the impact specimen machining accuracy detection system of the present invention has a higher degree of intelligence and improves the detection efficiency.

[0038] Optionally, the recognition detection device includes an image recognition module and a measurement module. The camera device is connected to the image recognition module, and the image recognition module is connected to the measurement module.

[0039] In this embodiment, the image recognition module is used to extract the image information captured by each camera, and the measurement module measures the image to obtain dimension data, realizing the conversion of three-dimensional space measurement into two-dimensional plane measurement. The measurement efficiency is high, the accuracy is more accurate, and compared with manual measurement, the degree of intelligence is higher, and the detection of various impact specimens can be realized.

[0040] In addition, the recognition and detection device further includes a voice broadcast module, and the voice broadcast module is connected to the measurement module. By performing voice value reporting through the language broadcast module, it is convenient for the user to obtain the measurement result more quickly. Generally, the total time taken for the entire process from loading the test sample body, taking pictures, measuring, to broadcasting is less than 10 seconds.

[0041] As Figure 1-2 shown, optionally, the impact test sample machining accuracy detection system further includes a sample feeding mechanism 5 and a sample tray 6. The camera device is arranged at one end of the sample feeding mechanism 5. The sample tray 6 is used to place the test sample body 8. The sample tray 6 is arranged on the sample feeding mechanism 5. The sample feeding mechanism 5 is used to drive the sample tray 6 to move towards the end close to the camera device, so that the test sample body 8 is simultaneously within the shooting ranges of the front view camera 1, the side view camera 2, and the top view camera 3.

[0042] In this embodiment, the sample feeding mechanism 5 can be a lead screw slider transmission mechanism or other mechanisms that convert rotation into linear motion, or a linear motion mechanism. The linear transmission direction of the sample feeding mechanism 5 is the direction shown by the Y axis, so as to drive the test sample body 8 to move from one end of the sample feeding mechanism 5 to the other end, and move towards or away from the camera device.

[0043] When it is necessary to detect the size of the test sample body 8, the test sample body 8 to be detected is placed on the sample tray 6. The sample feeding mechanism 5 drives the sample tray 6 to move back and forth, so as to drive the test sample body 8 to move back and forth together with the sample tray 6 until it reaches the shooting range of the camera device.

[0044] Here, the test sample body 8 can be directly placed on the sample tray 6 by hand, or a manipulator 10 can be used for picking and placing.

[0045] As Figure 1-2 shown, optionally, a first detection sensor is arranged on the sample tray 6. The first detection sensor is used to detect whether there is a test sample body 8 on the sample tray 6. The first detection sensor is connected to the sample feeding mechanism 5. When the first detection sensor detects that there is a test sample body 8 on the sample tray 6, the sample feeding mechanism 5 drives the sample tray 6 to move in the first direction to a preset position.

[0046] In this embodiment, the first detection sensor can be a weight sensor. By obtaining the weight of the sample tray 6 through the detection value of the weight sensor, it is judged whether there is material inside. The weight of the sample tray 6 when no test sample body 8 is placed is the initial weight. The measured weight at a certain moment is compared with the initial weight. If the measured weight is greater than the initial weight, there is a test sample body 8 in the sample tray 6, otherwise the judgment result is no.

[0047] After detecting with the first detection sensor to ensure that there is material in the sample tray 6, the sample feeding mechanism 5 drives the sample tray 6 to drive the sample body 8 to move in the direction shown by the Y-axis, avoiding the idling of the sample feeding mechanism 5 and driving the sample tray 6 to move without material.

[0048] As Figure 1-2 shown, optionally, the impact specimen processing precision detection system further includes a specimen positioning device 7, the specimen positioning device 7 is arranged on one side of the camera device, and the specimen positioning device 7 is used to position the specimen body 8 that moves to the preset position.

[0049] In this embodiment, the specimen positioning device 7 is used to position the specimen body 8 to ensure the detection position of the specimen body 8. Before taking a picture of the specimen body 8 each time, it can be fixed to ensure that images are taken at a fixed position each time, avoiding problems such as inability to take pictures or incomplete captured images due to inappropriate placement positions and large errors during the process of placing the specimen body 8 into the sample tray 6 by human hands or robotic hands.

[0050] Here, the sample feeding mechanism 5 drives the sample tray 6 to drive the specimen body 8 to move to achieve rough positioning of the specimen body 8. After the sample tray 6 moves in place, the specimen positioning device 7 directly pushes the specimen body 8 to move to achieve secondary fine positioning of the specimen body 8, and the positioning effect of the specimen body 8 is better, which is beneficial to photographing and detecting.

[0051] As Figure 1-2 shown, optionally, a second detection sensor is arranged on the specimen positioning device 7, the second detection sensor is connected to the camera device, and the second detection sensor is used to detect whether the specimen body 8 is positioned in place. When the second detection sensor detects that the specimen body 8 is positioned in place, the camera device takes a picture of the specimen body 8.

[0052] In this embodiment, the second detection sensor can be a position sensor. The second detection sensor is communicatively connected to the camera device, and the camera device operates according to the detection signal of the second detection sensor to ensure that the specimen body 8 is positioned in a suitable position, avoiding incorrect captured image information or incomplete image display.

[0053] As Figure 1-2 shown, optionally, a limit card slot 61 is arranged on the sample tray 6, the extending direction of the limit card slot 61 is the second direction, the second direction is perpendicular to the first direction, the specimen positioning device 7 includes two telescopic cylinders 71, and the two telescopic cylinders 71 are respectively located on both sides of the sample feeding mechanism 5. When the two telescopic cylinders 71 extend and retract to push the specimen body 8 to move in the second direction to position the specimen body 8, the telescopic cylinders 71 retract.

[0054] In this embodiment, the two telescopic cylinders 71 are respectively located on the left and right sides of the sample feeding mechanism 5. After the sample tray 6 drives the sample body 8 to move into place, the telescopic ends of the two telescopic cylinders 71 respectively abut against the two end faces of the long sample body 8. By controlling the telescopic movement of the two telescopic cylinders 71, the sample body 8 is driven to move along the direction shown by the X-axis until the sample body 8 moves into place, so as to realize the precise positioning of the sample body 8.

[0055] Here, it should be noted that considering that the side view camera 2 is installed on one of the left and right sides, it may affect the installation of the telescopic cylinder 71 and its telescopic movement along the direction shown by the X-axis. Taking the side view camera 2 installed on the right side as an example, one telescopic cylinder 71 on the right side avoids the side view camera 2. A baffle is installed at the telescopic end of the telescopic cylinder 71 on the right side, and it can be telescopically driven along the first direction, that is, the front-back direction, so that the baffle moves back and forth to abut against the right end face of the sample body 8. Then, one telescopic cylinder 71 on the left side telescopically moves along the second direction, that is, the left-right direction, until it abuts tightly against the left end face of the sample body 8. The two telescopic cylinders 71 clamp the sample body 8 from left and right to realize the positioning of the sample body 8. Then, the telescopic cylinders 71 on both sides retract to avoid blocking the shooting line of the camera device, and the camera device starts shooting.

[0056] As Figure 1-2 shown, optionally, the impact sample processing accuracy detection system further includes a camera position adjustment device 4. The front view camera 1, the side view camera 2, and the top view camera 3 are respectively connected to the corresponding camera position adjustment device 4.

[0057] As Figure 6 shown, in this embodiment, the camera position adjustment device 4 is generally used before detecting the size of the sample body 8 to adjust the position of the camera, and generally no further operation is required afterwards.

[0058] Another embodiment of the present invention further provides an impact sample processing accuracy detection method, which uses the impact sample processing accuracy detection system described above, and includes the following steps:

[0059] S1: Place the sample body 8 within the shooting range of the camera device of the impact sample processing accuracy detection system;

[0060] S2: The front view camera 1, the side view camera 2, and the top view camera 3 of the camera device respectively shoot the three faces of the sample body 8;

[0061] S3: The camera device transmits the captured images to the recognition and detection device of the impact sample processing accuracy detection system;

[0062] S4: The recognition and detection device recognizes the captured image and detects the size of the captured image.

[0063] The impact specimen machining accuracy detection method of the present invention has all the advantages of the above impact specimen machining accuracy detection system, and will not be repeated here.

[0064] The top-view camera 3 captures the upper part of the specimen body 8. When the captured image of the top-view camera 3 meets the imaging state requirements, the front-view camera 1 and the side-view camera 2 capture the other two faces of the specimen body 8. The imaging state mentioned here generally refers to a regular image. The length and width of the cuboid specimen body 8 are perpendicular to each other to avoid distortion of the captured image and affect the measurement results.

[0065] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. An impact specimen machining accuracy detection system, characterized in that, It includes a camera device and an identification and detection device. The camera device includes a front-facing camera (1), a side-facing camera (2), and an overhead camera (3). The front-facing camera (1) is used to be arranged in front of the test sample body (8) to photograph the front of the test sample body (8). The side-facing camera (2) is used to be arranged on the left side or the right side of the test sample body (8) to photograph the left side or the right side of the test sample body (8). The overhead camera (3) is used to be arranged above the test sample body (8) to photograph the top of the test sample body (8). The identification and detection device is connected to the front-facing camera (1), the side-facing camera (2), and the overhead camera (3). The identification and detection device is used to identify the captured images of the front-facing camera (1), the side-facing camera (2), and the overhead camera (3), and perform dimensional measurement on the captured images. The impact test sample processing accuracy detection system further includes a sample feeding mechanism (5) and a sample positioning device (7). The camera device is arranged at one end of the sample feeding mechanism (5). The sample feeding mechanism (5) is used to drive the test sample body (8) to move towards the end close to the camera device, so that the test sample body (8) is simultaneously within the shooting ranges of the front-facing camera (1), the side-facing camera (2), and the overhead camera (3). The sample positioning device (7) is arranged on one side of the camera device. The sample positioning device (7) includes two telescopic cylinders (71). The two telescopic cylinders (71) are respectively located on both sides of the sample feeding mechanism (5). One of the telescopic cylinders (71) is used to extend and retract in the front-rear direction to abut against the right end face of the test sample body (8), and the other telescopic cylinder (71) is used to extend and retract in the left-right direction to abut against the left end face of the test sample body (8). The test sample body (8) is in a cuboid shape. The front-facing camera (1), the side-facing camera (2), and the overhead camera (3) respectively face the surfaces of the test sample body (8). The two telescopic cylinders (71) are arranged in a staggered manner.

2. The impact specimen machining accuracy detection system according to claim 1, wherein It further includes a sample tray (6). The sample tray (6) is used to place the test sample body (8). The sample tray (6) is arranged on the sample feeding mechanism (5). The sample feeding mechanism (5) is used to drive the sample tray (6) to move towards the end close to the camera device, so that the test sample body (8) is simultaneously within the shooting ranges of the front-facing camera (1), the side-facing camera (2), and the overhead camera (3).

3. The impact specimen machining accuracy detection system according to claim 2, characterized in that, A first detection sensor is arranged on the sample tray (6). The first detection sensor is used to detect whether there is a test sample body (8) on the sample tray (6). The first detection sensor is connected to the sample feeding mechanism (5). When the first detection sensor detects that there is a test sample body (8) on the sample tray (6), the sample feeding mechanism (5) drives the sample tray (6) to move in the first direction to a preset position.

4. The impact specimen machining accuracy detection system according to claim 3, characterized in that, The sample positioning device (7) is used to position the test sample body (8) that has moved to the preset position.

5. The impact specimen machining accuracy detection system according to claim 4, characterized in that, A second detection sensor is provided on the sample positioning device (7), and the second detection sensor is connected to the camera device. The second detection sensor is used to detect whether the sample body (8) is positioned in place. After the second detection sensor detects that the sample body (8) is positioned in place, the camera device takes a picture of the sample body (8).

6. The impact specimen machining accuracy detection system according to claim 4, wherein A limit card slot (61) is provided on the sample tray (6). The extending direction of the limit card slot (61) is the second direction, and the second direction is perpendicular to the first direction. When the two telescopic cylinders (71) extend and retract to push the sample body (8) to move along the second direction to position the sample body (8), the telescopic cylinders (71) retract.

7. The impact specimen machining accuracy detection system according to claim 1, wherein, It further includes a camera position adjustment device (4). The front view camera (1), the side view camera (2), and the top view camera (3) are respectively connected to the corresponding camera position adjustment devices (4).

8. The impact specimen machining accuracy detection system according to claim 1, wherein The identification and detection device includes an image recognition module and a measurement module. The camera device is connected to the image recognition module, and the image recognition module is connected to the measurement module.

9. The impact specimen machining accuracy detection system according to claim 8, characterized in that, The identification and detection device further includes a voice broadcast module, and the voice broadcast module is connected to the measurement module.

10. A method for detecting the machining accuracy of impact specimens, characterized in that, Using the impact sample processing accuracy detection system according to any one of claims 1-9, including the following steps: S1: Place the sample body (8) within the shooting range of the camera device of the impact sample processing accuracy detection system; S2: The front view camera (1), the side view camera (2), and the top view camera (3) of the camera device respectively take pictures of three faces of the sample body (8); S3: The camera device transmits the captured images to the identification and detection device of the impact sample processing accuracy detection system; S4: The identification and detection device identifies the captured images and detects the sizes of the captured images.

Images