Code scanning module and detection equipment

Abstract

The utility model relates to the technical field of secret code identification, and discloses a code scanning module and detection equipment, and the code scanning module comprises a material loading module which comprises a clamp; the clamp is movably arranged in the first direction and is used for clamping a to-be-detected material; the code scanning module comprises a positioning camera and a code scanning gun; in the first direction, the code scanning gun is located at the downstream of the positioning camera, and the positioning camera and the code scanning gun are both arranged above the clamp; the positioning camera is used for collecting image information of a to-be-detected material; the code scanning gun and the clamp are adjustably arranged along the second direction; the measurement and control module is electrically connected with the positioning camera and the code scanning gun, and the measurement and control module is suitable for determining the scanning position of the code scanning gun according to the image information collected by the positioning camera; wherein the first direction is perpendicular to the second direction. The code scanning module and the detection equipment can effectively identify the secret code on the material to be detected, so that the working efficiency is improved, and the misjudgment of unqualified materials is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of secret code recognition, and in particular to a code scanning module and a detection device. Background Art

[0002] At present, many products produced in batches on assembly lines require QR code scanning operations at each work station to facilitate product tracking and tracing and realize digital management.

[0003] In glass products, QR codes are often set as hidden codes for aesthetic reasons. The hidden codes are small in size and the field of view of the barcode scanner is limited, making it difficult for the barcode scanner to effectively identify the hidden codes, reducing work efficiency. It is also easy to misjudge qualified materials as unqualified materials due to failure to effectively identify the hidden codes, increasing production costs. Utility Model Content

[0004] In view of this, the present invention provides a code scanning module and detection equipment to solve the problem that the code size is small and the field of view of the code scanning gun is limited, making it difficult for the code scanning gun to effectively identify the code.

[0005] In the first aspect, the utility model provides a code scanning module, including: a loading module, including a clamp; the clamp is movably arranged along a first direction, and the clamp is used to clamp the material to be inspected; a code scanning module, including a positioning camera and a code scanning gun; along the first direction, the code scanning gun is located downstream of the positioning camera, and the positioning camera and the code scanning gun are both arranged above the clamp; the positioning camera is used to collect image information of the material to be inspected; the code scanning gun and the clamp are adjustably arranged along the second direction; a measurement and control module, electrically connected to the positioning camera and the code scanning gun, the measurement and control module is suitable for determining the scanning position of the code scanning gun according to the image information collected by the positioning camera; wherein the first direction and the second direction are perpendicular to each other.

[0006] Optionally, the loading module includes a first linear drive mechanism and a second linear drive mechanism that are slidably connected, and the first linear drive mechanism is suitable for driving the second linear drive mechanism to move along the first direction; the clamp is slidably connected to the second linear drive mechanism, and the second linear drive mechanism is suitable for driving the clamp to move along the second direction.

[0007] Optionally, the loading module also includes a third linear drive mechanism, which is slidably connected between the clamp and the second linear drive mechanism, and the third linear drive mechanism is suitable for driving the clamp to move along a third direction; the third direction is perpendicular to the first direction and the second direction.

[0008] Optionally, the code scanning module further includes a first light source, which is disposed on one side of the fixture along the second direction to illuminate the material to be inspected along the second direction.

[0009] Optionally, the code scanning module further includes a second light source, which is coaxially arranged below the positioning camera and above the fixture.

[0010] Optionally, the code scanning module also includes a loading module, which includes a conveying mechanism and a driving mechanism; along the first direction, the conveying mechanism is located upstream of the clamp and docked with the clamp; the driving mechanism is suitable for driving the conveying mechanism to convey the material to be inspected along the first direction.

[0011] Optionally, the conveying mechanism is a conveyor belt structure, and an in-position sensor is provided at one end of the conveyor belt structure close to the clamp.

[0012] Optionally, the loading module further includes a fan, which is arranged above the conveying mechanism.

[0013] Optionally, the loading module, the code scanning module, and the loading module are each arranged in two groups at intervals along the second direction.

[0014] In a second aspect, the present invention further provides a detection device, including: a code scanning module as described above.

[0015] The technical solution of the present utility model has at least the following advantages:

[0016] 1. The barcode scanning module of the present invention uses a positioning camera to collect image information of the material to be inspected clamped in the fixture. The measurement and control module can preliminarily locate the position of the material to be inspected based on the image information, and then determine the scanning position of the barcode scanner; and adjust the relative position of the barcode scanner and the fixture according to the scanning position, so that the barcode scanner can effectively identify the secret code on the material to be inspected, improve work efficiency, reduce the misjudgment of unqualified materials, and reduce production costs.

[0017] 2. The loading module of the present invention drives the clamp to move in the first direction and the second direction through the first linear drive mechanism and the second linear drive mechanism, which makes it easy to accurately control the position of the material to be inspected clamped in the clamp, and facilitates timely adjustment of the relative position of the material to be inspected and the barcode scanner, thereby realizing effective recognition of the secret code.

[0018] 3. The loading module of the present invention drives the clamp to move in the third direction through the third linear drive mechanism, which makes it easy to adjust the distance between the material to be inspected and the barcode scanner in time, ensuring the focusing effect of the barcode scanner, and further improving the barcode scanner's ability to recognize secret codes.

[0019] 4. The barcode scanning module of the present invention is equipped with a first light source and a second light source. The first light source can shine a light beam from one side of the material to be inspected into its interior, thereby illuminating the secret code on the material to be inspected, making it easier for the barcode scanning gun to identify the secret code; the second light source can provide coaxial light for the positioning camera, making it easier for the positioning camera to accurately obtain the surface image of the material to be inspected, thereby facilitating accurate positioning of the material to be inspected.

[0020] 5. The utility model sets a loading module upstream of the code scanning module to facilitate the rapid loading of the materials to be inspected. In addition, during the loading process, the fan can remove dust, impurities, static electricity, etc. on the surface of the materials to be inspected, facilitating the subsequent process.

[0021] 6. The detection equipment of the present invention can effectively identify the secret code of the material to be inspected by utilizing the above-mentioned code scanning module, thereby obtaining the ID code corresponding to the material to be inspected, which is convenient for binding the detection result of the material to be inspected with its own ID code, so as to meet the digital management under the needs of large-scale replication production, facilitate the subsequent tracing of the details of defective problems, and improve the quality of production quality control. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a structural diagram of a code scanning module according to an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 A side view of the first direction;

[0025] Figure 3 for Figure 1 A side view in a second direction.

[0026] Description of reference numerals:

[0027] 1. Loading module; 11. Clamp; 12. First linear drive mechanism; 13. Second linear drive mechanism; 14. Third linear drive mechanism;

[0028] 2. Scanning module; 21. Positioning camera; 22. Scanning gun; 23. Support frame; 24. First light source; 25. Second light source;

[0029] 3. Loading module; 31. Conveying mechanism; 32. Driving mechanism; 33. Fan;

[0030] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply 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 a limitation on this application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0034] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0037] The following combination Figures 1 to 3 , describing the embodiments of the present utility model.

[0038] According to an embodiment of the present invention, a detection device is provided, which can be a device for detecting the appearance quality of a product, especially a device for detecting the appearance quality of a glass product. The detection device includes a code scanning module and a detection module. The code scanning module is used to scan the material to be inspected to obtain the ID code of the material to be inspected; the detection module is used to perform appearance quality inspection on the material to be inspected. The code scanning module includes a measurement and control module, which can bind the ID code of the material to be inspected and its own detection results to meet the digital management needs under large-scale replication production, facilitate the subsequent tracing of the details of defective problems, and improve the quality of production quality control.

[0039] The present invention does not impose any specific limitation on the structure of the detection module, as long as it can achieve the corresponding detection function.

[0040] It can be understood that the code scanning module of the present invention includes but is not limited to being used in the above-mentioned detection equipment.

[0041] For the convenience of describing the embodiments of the present invention, the first direction X is defined as the flow direction of the material to be inspected, that is, the length direction of the code scanning module, the second direction Y is defined as the width direction of the code scanning module, and the third direction Z is defined as the height direction of the code scanning module. The first direction X, the second direction Y and the third direction Z are arranged perpendicular to each other.

[0042] Specifically, the code scanning module includes a loading module 1, a code scanning module 2 and the above-mentioned measurement and control module. Among them, the loading module 1 includes a clamp 11, the clamp 11 is movably arranged along the first direction X, and the clamp 11 is used to clamp the material to be inspected. The code scanning module 2 includes a positioning camera 21 and a code scanning gun 22. Along the first direction X, the code scanning gun 22 is located downstream of the positioning camera 21, and the positioning camera 21 and the code scanning gun 22 are both arranged above the clamp 11. The positioning camera 21 is used to collect image information of the material to be inspected, and the code scanning gun 22 and the clamp 11 are adjustably arranged along the second direction Y. The measurement and control module is electrically connected to the positioning camera 21 and the code scanning gun 22, and the measurement and control module is suitable for determining the scanning position of the code scanning gun 22 according to the image information collected by the positioning camera 21.

[0043] In this embodiment, the barcode scanning module 2 uses the positioning camera 21 to collect image information of the material to be inspected clamped in the clamp 11. The measurement and control module can preliminarily locate the position of the material to be inspected based on the image information, and then determine the scanning position of the barcode scanning gun 22; and adjust the relative position of the barcode scanning gun 22 and the clamp 11 according to the scanning position, so that the barcode scanning gun 22 can effectively identify the secret code on the material to be inspected, improve work efficiency, reduce the misjudgment of unqualified materials to be inspected, and thus reduce production costs.

[0044] In some embodiments, the measurement and control module can calculate the coordinate value of the material to be inspected based on the image information collected by the positioning camera 21 to assist in the positioning of the barcode scanner 22 and facilitate accurate scanning by the barcode scanner 22.

[0045] In some embodiments, the loading module 1 includes a first linear drive mechanism 12 and a second linear drive mechanism 13 that are slidably connected. The first linear drive mechanism 12 is adapted to drive the second linear drive mechanism 13 to move in a first direction X. The fixture 11 is slidably connected to the second linear drive mechanism 13, and the second linear drive mechanism 13 is adapted to drive the fixture 11 to move in a second direction Y. By driving the fixture 11 in the first direction X and the second direction Y by the first linear drive mechanism 12 and the second linear drive mechanism 13, the position of the material to be inspected held within the fixture 11 can be precisely controlled, facilitating timely adjustment of the relative position between the material to be inspected and the barcode scanner 22, thereby effectively identifying the code.

[0046] Exemplarily, the first linear drive mechanism 12 and the second linear drive mechanism 13 can be linear motors; exemplary, the first linear drive mechanism 12 and the second linear drive mechanism 13 can be drive motors plus ball screws; exemplary, the first linear drive mechanism 12 and the second linear drive mechanism 13 can also be drive motors plus linear slides.

[0047] In some embodiments, the loading module 1 further includes a third linear drive mechanism 14, which is slidably connected between the fixture 11 and the second linear drive mechanism 13. The third linear drive mechanism 14 is adapted to drive the fixture 11 in a third direction Z, i.e., a height direction. By driving the fixture 11 in the third direction Z by the third linear drive mechanism 14, the distance between the inspected material and the barcode scanner 22 can be readily adjusted, ensuring the barcode scanner 22's focus and further improving the barcode scanner 22's ability to recognize hidden codes.

[0048] Exemplarily, the third linear drive mechanism 14 may be a linear motor; exemplary, the third linear drive mechanism 14 may be a drive motor plus a ball screw; exemplary, the third linear drive mechanism 14 may also be a drive motor plus a linear slide rail.

[0049] It can be understood that the loading module 1 of the present invention utilizes the first linear drive mechanism 12, the second linear drive mechanism 13 and the third linear drive mechanism 14 to drive the clamp 11 to move the material to be inspected in the first direction X, the second direction Y and the third direction Z, which not only can achieve precise control of the moving position of the material to be inspected, but also makes it easier for the clamp 11 to receive and clamp upstream materials.

[0050] In some embodiments not shown, the barcode scanning module includes a position adjustment module, which can be connected to the barcode scanning module 2, or directly connected to the barcode scanning gun 22. The position adjustment module can drive the barcode scanning gun 22 to move in three-dimensional space to achieve adjustable position setting of the barcode scanning gun 22 and the fixture 11 along the second direction Y.

[0051] Furthermore, in some embodiments, the barcode scanning module 2 further includes a first light source 24 , which is disposed on one side of the fixture 11 along the second direction Y to illuminate the material to be inspected along the second direction Y. The first light source 24 can direct a light beam from one side of the material to be inspected into the interior of the material to be inspected, thereby illuminating the secret code on the material to be inspected, facilitating recognition of the secret code by the barcode scanning gun 22 .

[0052] For example, the first light source 24 can be fixedly connected to one side of the fixture 11 along the second direction Y. For example, the first light source 24 can also be fixedly connected to the third linear drive mechanism 14. The present invention does not impose any specific restrictions on the arrangement of the first light source 24, as long as the first light source 24 can illuminate the code on one side of the material to be inspected.

[0053] In some embodiments, the barcode scanning module 2 further includes a second light source 25, which is coaxially disposed below the positioning camera 21 and above the fixture 11. The second light source 25 can provide coaxial light to the positioning camera 21, facilitating the positioning camera 21 to accurately acquire a surface image of the material to be inspected, thereby accurately locating the material to be inspected.

[0054] In some embodiments, the barcode scanning module 2 further includes a support frame 23, to which the positioning camera 21, barcode scanning gun 22, and second light source 25 are fixedly connected, for example, by welding, bolting, riveting, etc. The positioning camera 21 and barcode scanning gun 22 are spaced apart along a first direction X and connected to the same side of the support frame 23; the second light source 25 and the positioning camera 21 are spaced apart and coaxially disposed along a third direction Z.

[0055] Furthermore, in some embodiments, the barcode scanning module further includes a loading module 3, which includes a conveyor mechanism 31 and a drive mechanism 32. The conveyor mechanism 31 is located upstream of the fixture 11 along the first direction X and docks with the fixture 11. The drive mechanism 32 is adapted to drive the conveyor mechanism 31 to convey the material to be inspected along the first direction X. The placement of the loading module 3 upstream of the barcode scanning module 2 facilitates rapid loading of the material to be inspected.

[0056] In some embodiments, the conveying mechanism 31 is a conveyor belt structure, and the driving mechanism 32 may include a driving motor and a pulley. The driving motor drives the pulley to rotate, thereby driving the conveyor belt in the transmission belt structure to rotate, thereby driving the material to be inspected to move along the first direction X.

[0057] It is understandable that the conveying mechanism 31 may also be a linear motor structure, etc., as long as it can realize the function of conveying the material to be inspected along the first direction X.

[0058] In some embodiments, the conveying mechanism 31 is a conveyor belt structure, and an in-place sensor is provided at one end of the conveyor belt structure close to the clamp 11. Specifically, the conveyor belt structure includes a frame and a conveyor belt, and the conveyor belt is stretched on the frame along a first direction X. The driving mechanism 32 drives the conveyor belt to rotate around its own circumference to convey the material to be inspected along the first direction X. The in-place sensor is provided at one end of the frame close to the clamp 11. Under the conveying action of the conveyor belt, when the material to be inspected reaches the position of the in-place sensor, the conveyor belt stops rotating, so that the clamp 11 can clamp and fix the material to be inspected on the conveyor belt. Exemplarily, the in-place sensor can be a photoelectric sensor.

[0059] In some embodiments, the clamp 11 clamps and secures the material to be inspected through vacuum adsorption. Specifically, the loading module 1 includes the clamp 11 and the above-mentioned first linear drive mechanism 12, second linear drive mechanism 13, third linear drive mechanism 14, and a vacuum generator (not shown in the figure). The first linear drive mechanism 12, second linear drive mechanism 13, and third linear drive mechanism 14 work together to drive the clamp 11 to move in three-dimensional space. The clamp 11 includes a first half and a second half connected to each other, forming a clamping space between the first half and the second half, in which the material to be inspected is fixed. For example, the first half is provided with a suction hole on the side facing the second half, and the second half is provided with a suction hole on the side facing the first half. The vacuum generator is connected to the suction hole of the clamp 11, and the vacuum generator is used to achieve the fixation and release of the material to be inspected in the clamping space. When the clamp 11 is docked with the conveying mechanism 31, the third linear drive mechanism 14 drives the clamp 11 to move, and the clamp 11 approaches the material to be inspected and activates vacuum adsorption to secure the material to be inspected. After the clamp 11 absorbs and fixes the material to be inspected, the positioning camera 21 starts to collect image information of the material to be inspected.

[0060] In some embodiments, the loading module 3 further includes a fan 33, which is disposed above the conveyor mechanism 31. During the loading process, the fan 33 can remove dust, impurities, static electricity, and other impurities from the surface of the material to be inspected, facilitating subsequent processing steps. Exemplarily, the fan 33 can be an ion fan 33, which is compact, lightweight, and easy to install.

[0061] Furthermore, in some embodiments, the loading module 1, the barcode scanning module 2, and the loading module 3 are each arranged in two groups spaced apart along the second direction Y to improve the efficiency of scanning and detecting the materials to be inspected. Specifically, the barcode scanning module further includes a work platform, and the two groups of the loading module 1 and the loading module 3 can be arranged on the work platform, and the two groups of the barcode scanning modules 2 can be respectively arranged on opposite sides of the support frame 23 along the second direction Y.

[0062] The scanning process of the scanning module of this utility model is as follows:

[0063] 1. The measurement and control module receives the image information collected by the positioning camera 21, calculates the coordinates of the material to be inspected based on the image information, and then determines the scanning position of the barcode scanner 22;

[0064] 2. The fixture 11 holds the product to be inspected and moves to the scanning position of the barcode scanner 22;

[0065] 3. Start scanning:

[0066] (1) If the first scan is successful, the material to be inspected will continue to flow to the next process;

[0067] (2) If the first scan fails, the fixture 11 drives the material to be inspected to move along the third direction Z, fine-tunes the position of the material to be inspected (moves 0.1 mm along the third direction Z), and starts the second scan;

[0068] (3) If the second scan is successful, the material to be inspected continues to flow to the next process;

[0069] (4) If the second scan fails, the clamp 11 drives the material to be inspected to move along the second direction Y, and adjusts the position of the material to be inspected (moves a distance of about 2 product widths along the second direction Y) so that the other edge of the material to be inspected is located at the position to be scanned.

[0070] Repeat steps 1 to 3 to scan the material for the third and fourth time. If the fourth scan fails, the scan is considered unsuccessful and the material is deemed unqualified.

[0071] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A code scanning module, characterized in that: include: A loading module (1) comprises a clamp (11); the clamp (11) is movably arranged along a first direction (X), and the clamp (11) is used to clamp a material to be inspected; A code scanning module (2) comprises a positioning camera (21) and a code scanning gun (22); along a first direction (X), the code scanning gun (22) is located downstream of the positioning camera (21), and the positioning camera (21) and the code scanning gun (22) are both arranged above the clamp (11); the positioning camera (21) is used to collect image information of the material to be inspected; the code scanning gun (22) and the clamp (11) are adjustable in position along a second direction (Y); a measurement and control module electrically connected to the positioning camera (21) and the code scanning gun (22), wherein the measurement and control module is adapted to determine a scanning position of the code scanning gun (22) based on image information collected by the positioning camera (21); The first direction (X) and the second direction (Y) are perpendicular to each other.

2. The code scanning module according to claim 1, characterized in that: The loading module (1) comprises a first linear drive mechanism (12) and a second linear drive mechanism (13) which are slidably connected, wherein the first linear drive mechanism (12) is suitable for driving the second linear drive mechanism (13) to move along a first direction (X); the clamp (11) is slidably connected to the second linear drive mechanism (13), and the second linear drive mechanism (13) is suitable for driving the clamp (11) to move along a second direction (Y).

3. The code scanning module according to claim 2, characterized in that: The loading module (1) further comprises a third linear drive mechanism (14), wherein the third linear drive mechanism (14) is slidably connected between the clamp (11) and the second linear drive mechanism (13), and the third linear drive mechanism (14) is suitable for driving the clamp (11) to move along a third direction (Z); The third direction (Z) is perpendicular to the first direction (X) and the second direction (Y).

4. The code scanning module according to claim 1, characterized in that: The code scanning module (2) further comprises a first light source (24), which is arranged on one side of the clamp (11) along the second direction (Y) to illuminate the material to be inspected along the second direction (Y).

5. The code scanning module according to claim 1, characterized in that: The code scanning module (2) further includes a second light source (25), which is coaxially arranged below the positioning camera (21) and above the clamp (11).

6. The code scanning module according to any one of claims 1 to 5, characterized in that: The code scanning module further comprises a loading module (3), wherein the loading module (3) comprises a conveying mechanism (31) and a driving mechanism (32); along a first direction (X), the conveying mechanism (31) is located upstream of the clamp (11) and docked with the clamp (11); the driving mechanism (32) is suitable for driving the conveying mechanism (31) to convey the material to be inspected along the first direction (X).

7. The code scanning module according to claim 6, characterized in that: The conveying mechanism (31) is a conveyor belt structure, and an in-position sensor is provided at one end of the conveyor belt structure close to the clamp (11).

8. The code scanning module according to claim 6, characterized in that: The loading module (3) further includes a fan (33), and the fan (33) is arranged above the conveying mechanism (31).

9. The code scanning module according to claim 6, characterized in that: The loading module (1), the code scanning module (2), and the loading module (3) are all arranged in two groups at intervals along the second direction (Y).

10. A detection device, characterized in that: include: The code scanning module according to any one of claims 1 to 9.

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