Multi-spectrum fused metal surface barcode recognition module

Abstract

The utility model discloses a metal surface bar code identification module of multispectral fusion belongs to bar code identification technical field, including camera main part and multispectral light module still, including the adjusting assembly for adjusting multispectral light module is still used, the camera main part is installed in the top one side of main part structure, and the multispectral light module is set in the below of camera main part, the utility model discloses through setting multispectral light module, simple structure, convenient and practical, can through the reflection difference of different spectrum of metal and bar code ink, highlight bar code contrast ratio to the bar code on the metal surface is identified to the adjusting assembly is set up, can adjust the position and angle of multispectral light module to reduce the influence of reflected light to image acquisition, further convenient to the bar code on the metal surface is identified, has improved the success rate when the bar code on the metal surface is identified greatly.

Description

Technical Field

[0001] This utility model relates to the field of barcode recognition technology, specifically a multispectral fusion metal barcode recognition module. Background Technology

[0002] The core of the barcode recognition module consists of four major modules: an optical system, a photoelectric conversion system, a signal processing system, and a control and interface system. The optical system includes a light source to provide uniform illumination and ensure clear barcode imaging, and a camera (which focuses the barcode image onto the photosensitive element) to capture the optical image of the barcode. The photoelectric conversion system, with the photosensitive element at its core, converts the optical image into an analog electrical signal. The signal processing system uses an image processing chip to reduce noise and enhance the electrical signal, and then a decoding algorithm chip parses the barcode data. The control and interface system includes a main control chip and a communication interface to enable data output and interaction with external devices.

[0003] Metal surfaces have high specular reflectivity, which strongly reflects the illumination source of the recognition module, causing "overexposure" or "spots" in the barcode area. This obscures the contrast between the black and white bars of the barcode and directly affects the clear acquisition of the barcode image by the optical system, resulting in a low recognition success rate when recognizing barcodes on metal surfaces. This problem has not been solved in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a multispectral fusion metal barcode recognition module. By setting up a multispectral light module, the difference in reflection of different spectra by metal and barcode ink can be used to highlight the barcode contrast, thereby facilitating the recognition of barcodes on metal surfaces. Furthermore, by setting up an adjustment component, the position and angle of the multispectral light module can be adjusted, thereby reducing the impact of reflected light on image acquisition and further facilitating the recognition of barcodes on metal surfaces. This greatly improves the success rate of recognizing barcodes on metal surfaces, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The multispectral fusion metal barcode recognition module includes a camera body and a multispectral light module, as well as an adjustment component for adjusting the multispectral light module;

[0007] The camera body is mounted on the top side of the main structure, the multispectral light module is located below the camera body, and an infrared emitter is installed in the middle of one side of the multispectral light module;

[0008] The adjustment assembly includes a lifting frame, one side of which is slidably mounted on the outside of the support column. A movable seat is fixedly installed inside the lifting frame and mounted on the surface of the lead screw. The other side of the lifting frame is rotatably connected to a rotating shaft, which is fixedly connected to a multispectral lighting module.

[0009] Preferably, the main structure includes a mounting box and a grip. The camera body is mounted on one side of the mounting box, the grip is fixedly mounted on the bottom side of the mounting box, and a button switch is mounted on the top side of the grip.

[0010] Preferably, the bottom of the mounting box is fixedly connected to the top of the support column, the bottom of the support column is fixedly installed on the top side of the base plate, and the top of the base plate is fixedly connected to the bottom of the handle.

[0011] Preferably, a movable groove is provided in the middle of the outer side of the support column, the lead screw is rotatably installed inside the movable groove, and the movable seat is slidably engaged with the movable groove.

[0012] Preferably, the bottom of the lead screw is coaxially arranged and fixedly connected to the drive shaft, the drive shaft passes through the base plate and is rotatably connected to the base plate, and a knob is fixedly installed at the bottom of the drive shaft, the knob being rotatably installed at the bottom of the base plate.

[0013] Preferably, a turntable is rotatably mounted on one side of the lifting frame, the turntable is coaxially arranged and fixedly connected to the rotating shaft, and one side of the turntable is fixedly connected to one side of the actuating plate.

[0014] Preferably, a spring positioning bead is installed on the inner wall of the other side of the actuating plate, and multiple positioning grooves that cooperate with the spring positioning bead are opened on one side of the lifting frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model features a simple and convenient multispectral light module. By utilizing the difference in reflection of different spectra between metal and barcode ink, it enhances the barcode contrast, thus facilitating the recognition of barcodes on metal surfaces. Furthermore, by incorporating adjustment components, the position and angle of the multispectral light module can be adjusted, reducing the impact of reflected light on image acquisition and further facilitating the recognition of barcodes on metal surfaces. This significantly improves the success rate of barcode recognition on metal surfaces. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 A schematic diagram of the adjustment component structure;

[0019] Figure 3 This is a schematic diagram of the lifting frame structure;

[0020] Figure 4 This is a schematic diagram of the toggle switch structure.

[0021] In the diagram: 1. Camera body; 2. Multispectral light module; 3. Infrared transmitter; 4. Lifting frame; 5. Support column; 6. Movable base; 7. Lead screw; 8. Rotary shaft; 9. Mounting box; 10. Handle; 11. Button switch; 12. Base plate; 13. Movable slot; 14. Drive shaft; 15. Knob; 16. Turntable; 17. Toggle plate; 18. Spring positioning bead; 19. Positioning slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution:

[0024] A multispectral fusion metal barcode recognition module includes a camera body 1, which is mounted on the top side of a main structure. The main structure includes a mounting box 9 and a handle 10. The camera body 1 is mounted on one side of the mounting box 9, and the handle 10 is fixedly mounted on the bottom side of the mounting box 9. A button switch 11 is mounted on the top side of the handle 10. The bottom side of the mounting box 9 is fixedly connected to the top of a support column 5. The bottom of the support column 5 is fixedly mounted on the top side of a base plate 12, and the top side of the base plate 12 is fixedly connected to the bottom of the handle 10.

[0025] By setting the mounting box 9 as the core functional integration unit, in addition to the external camera body 1, the mounting box 9 is also equipped with optical adjustment components (such as a lens focal length fine-tuning mechanism and a filter switching module), which can assist the camera body 1 in accurately focusing on the metal barcode. At the same time, it can switch and adapt the filter according to the recognition scene to further reduce the interference of ambient light and metal reflection. The mounting box 9 also has a built-in photosensitive element (such as a CMOS chip) and a signal amplification module that are linked with the camera body 1. It can efficiently convert the optical image of the barcode captured by the camera body 1 into an analog electrical signal, and reduce signal loss through amplification processing, laying the foundation for subsequent analysis; and install It integrates an image processing chip and a decoding algorithm chip. The image processing chip can reduce noise, sharpen, enhance contrast, and correct distortion of the electrical signal after photoelectric conversion. The decoding algorithm chip is equipped with a dedicated decoding library for metal surface barcodes, which can quickly analyze the optimized signal and accurately extract data even if the barcode is slightly dirty or incomplete. It also includes a main control chip, a power supply module, and a communication interface. The main control chip can control the band switching, brightness adjustment, and start / stop commands of the external multispectral lighting module 2 and the button switch 11. The power supply module provides stable power to the various systems inside the box and the external modules. The communication interface enables the interactive transmission of decoded data with the host device.

[0026] The multispectral lighting module 2 is located below the camera body 1. The multispectral lighting module 2 integrates a multi-wavelength LED array, a uniform light and collimating optical structure, a heat dissipation structure, a driving and control circuit, and an infrared emitter 3 for aiming at the barcode. The multi-wavelength LED array covers the visible light (such as 465–475nm blue light, 515–530nm green light, and 620–630nm red light) and near-infrared (850nm / 940nm) bands. It can control brightness and switch bands independently. It uses the difference in spectral reflection between metal and barcode ink to suppress reflection and enhance the contrast between bars and spaces. The uniform light and collimating optics (diffuser, lens, etc.) can avoid dark corners of the light spot and improve the uniformity of illumination. The heat dissipation structure ensures stable operation of the LED. The driving circuit supports constant current drive, PWM brightness adjustment, and strobe / constant light mode switching. The infrared emitter 3 installed in the center can emit an infrared beam to assist in the angle adjustment of the multispectral lighting module 2, laying the foundation for the camera body 1 to efficiently acquire clear images.

[0027] It also includes an adjustment assembly for adjusting the multispectral lighting module 2. The adjustment assembly includes a lifting frame 4, one side of which is slidably mounted on the outside of the support column 5. A movable seat 6 is fixedly mounted inside the lifting frame 4 and mounted on the surface of the lead screw 7. The other side of the lifting frame 4 is rotatably connected to a rotating shaft 8, which is fixedly connected to the multispectral lighting module 2. A movable groove 13 is provided in the middle of the outside of the support column 5. The lead screw 7 is rotatably mounted inside the movable groove 13. The top and bottom of the lead screw 7 are rotatably engaged with the mounting box 9 and the base plate 12, respectively. The movable seat 6 is slidably engaged with the movable groove 13. The bottom of the lead screw 7 is coaxially arranged and fixedly connected to the drive shaft 14. The drive shaft 14 passes through the base plate 12 and is rotatably connected to the base plate 12. A knob 15 is fixedly installed at the bottom of the drive shaft 14. The knob 15 is rotatably installed at the bottom of the base plate 12. A turntable 16 is rotatably installed on one side of the lifting frame 4. The turntable 16 is coaxially arranged and fixedly connected to the rotating shaft 8. One side of the turntable 16 is fixedly connected to one side of the actuating plate 17. A spring positioning bead 18 is installed on the inner wall of the other side of the actuating plate 17. Multiple positioning grooves 19 are opened on one side of the lifting frame 4 to cooperate with the spring positioning bead 18.

[0028] By setting an adjustment component, the spatial position and illumination angle of the multispectral lighting module 2 can be adjusted, reducing the interference of light reflected from the metal surface on the image acquisition of the camera body 1, and ensuring clear, high-contrast lighting conditions for the barcode area. Specifically, the lifting frame 4 in the adjustment component cooperates with the lead screw 7 in the moving slot 13 of the support column 5 through the moving seat 6. Rotating the knob 15 at the bottom of the base plate 12 drives the transmission shaft 14 and the lead screw 7 to rotate synchronously, causing the moving seat 6 to slide up and down along the moving slot 13, thereby realizing the vertical height adjustment of the multispectral lighting module 2 to adapt to the barcode position of metal parts of different sizes. Meanwhile, the other side of the lifting frame 4 is fixed to the multispectral light module 2 via the rotating shaft 8, and the rotating shaft 8 is coaxially connected to the turntable 16 and the actuating plate 17. The spring positioning bead 18 on the inner wall of the actuating plate 17 can engage and fix with the multiple positioning slots 19 of the lifting frame 4. Pushing the actuating plate 17 can drive the turntable 16, the rotating shaft 8 and the light module to rotate synchronously, so as to achieve precise adjustment of the light illumination angle. Combined with the aiming function of the infrared transmitter 3, the best lighting posture can be found quickly. The lighting effect is optimized from both spatial position and angle aspects, which provides a guarantee for the camera body 1 to efficiently collect clear images of metal noodle codes and further improves the recognition success rate.

[0029] In practical use, move the device to the designated position and operate it to identify the barcode. If the identification is successful, continuous operation can continue. If the identification fails due to reflected light, rotate the knob 15 at the bottom of the base plate 12 to drive the drive shaft 14 and the lead screw 7 in the moving groove 13 of the support column 5 to rotate synchronously. This causes the lifting frame 4 to slide up and down along the moving groove 13 via the moving seat 6, changing the vertical height of the multispectral light module 2. Then, keep the camera body 1 aligned with the barcode, turn on the infrared emitter 3, and push the toggle plate 17 to drive the turntable 16 and the rotating shaft 8 to rotate synchronously, adjusting the illumination angle of the multispectral light module 2 so that the red dot falls on the barcode. This achieves alignment of the multispectral light module 2 with the barcode and completes the change of illumination angle. Operate the device again to identify the barcode. If the identification fails, the light height can be adjusted or the multispectral band can be switched repeatedly until the identification is successful.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multispectral fusion metal barcode recognition module, comprising a camera body (1) and a multispectral light module (2), characterized in that: It also includes an adjustment component for adjusting the multispectral lighting module (2); The camera body (1) is installed on the top side of the main structure, the multispectral light module (2) is located below the camera body (1), and an infrared emitter (3) is installed in the middle of one side of the multispectral light module (2); The adjustment assembly includes a lifting frame (4), one side of which is slidably mounted on the outside of the support column (5). A movable seat (6) is fixedly installed inside the lifting frame (4), and the movable seat (6) is mounted on the surface of the lead screw (7). The other side of the lifting frame (4) is rotatably connected to a rotating shaft (8), and the rotating shaft (8) is fixedly connected to the multispectral lighting module (2).

2. The multispectral fusion metal barcode recognition module according to claim 1, characterized in that: The main structure includes a mounting box (9) and a grip (10). The camera body (1) is mounted on one side of the mounting box (9), and the grip (10) is fixedly mounted on the bottom side of the mounting box (9). A button switch (11) is mounted on the top side of the grip (10).

3. The multispectral fusion metal barcode recognition module according to claim 2, characterized in that: The bottom of the mounting box (9) is fixedly connected to the top of the support column (5), the bottom of the support column (5) is fixedly installed on the top side of the base plate (12), and the top side of the base plate (12) is fixedly connected to the bottom of the handle (10).

4. The multispectral fusion metal barcode recognition module according to claim 1, characterized in that: The support column (5) has a movable groove (13) in the middle of its outer side. The lead screw (7) is rotatably installed inside the movable groove (13). The movable seat (6) is slidably engaged with the movable groove (13).

5. The multispectral fusion metal barcode recognition module according to claim 4, characterized in that: The bottom of the lead screw (7) is coaxially arranged and fixedly connected to the drive shaft (14). The drive shaft (14) passes through the base plate (12) and is rotatably connected to the base plate (12). A knob (15) is fixedly installed at the bottom of the drive shaft (14). The knob (15) is rotatably installed at the bottom of the base plate (12).

6. The multispectral fusion metal barcode recognition module according to claim 1, characterized in that: A turntable (16) is rotatably mounted on one side of the lifting frame (4). The turntable (16) is coaxially arranged and fixedly connected to the rotating shaft (8). One side of the turntable (16) is fixedly connected to one side of the actuating plate (17).

7. The multispectral fusion metal barcode recognition module according to claim 6, characterized in that: A spring positioning bead (18) is installed on the inner wall of the other side of the actuating plate (17), and a number of positioning grooves (19) are opened on one side of the lifting frame (4) to cooperate with the spring positioning bead (18).

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