A packaging information recognition system

Abstract

The utility model provides a kind of packaging information identification system, belong to image recognition technical field, including image reading device, information storage device and data synchronization device, the image reading device is connected with information storage device by data connection line, information storage device and data synchronization device wireless communication connection;The image reading device includes industrial camera, adjustable polarizing plate assembly, near-infrared auxiliary lighting assembly and controller, adjustable polarizing plate assembly and near-infrared auxiliary lighting assembly are located industrial camera both sides respectively, and industrial camera, adjustable polarizing plate assembly and near-infrared auxiliary lighting assembly are all electrically connected with controller.The utility model can reduce the interference of ambient light to packaging information code scanning, improve the accuracy of information identification.

Description

Technical Field

[0001] This utility model belongs to the field of image recognition technology, and in particular relates to a packaging information recognition system. Background Technology

[0002] Agricultural products have a longer cycle of harvesting, storage, transportation, and sale compared to other products. The storage time and environment of crops can affect their internal physicochemical properties. For example, sweet potatoes are prone to a decline in taste and nutritional value when stored for a long time. However, this change is not easily observed on the surface. Consumers who buy sweet potatoes that have been on the market for too long will have a poor purchasing experience.

[0003] Currently, information identification codes are usually printed on agricultural product packaging. By scanning the information identification codes on the packaging at various stages such as harvesting, storage, transportation, and sales, relevant information can be entered, making it convenient for consumers to trace the product later.

[0004] However, when using barcode scanners to automatically scan the information identification codes on packaging, scanning often fails due to ambient light conditions, requiring manual rescanning, which is time-consuming and labor-intensive, seriously affecting work efficiency. Utility Model Content

[0005] In view of the defects or deficiencies in the existing technology, this utility model provides a packaging information recognition system that can reduce the interference of ambient light on the scanning of packaging information codes and improve the accuracy of information recognition.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An embodiment of this utility model provides a packaging information identification system, including an image reading device, an information storage device, and a data synchronization device. The image reading device is connected to the information storage device via a data connection cable, and the information storage device and the data synchronization device are wirelessly connected.

[0008] The image reading device includes an industrial camera, an adjustable polarizer assembly, a near-infrared auxiliary illumination assembly, and a controller. The adjustable polarizer assembly and the near-infrared auxiliary illumination assembly are located on both sides of the industrial camera, and the industrial camera, the adjustable polarizer assembly, and the near-infrared auxiliary illumination assembly are all electrically connected to the controller.

[0009] Furthermore, the image reading device includes a base plate, and a housing is connected to the base plate via a bracket. The industrial camera, adjustable polarizer assembly, and near-infrared auxiliary illumination assembly are all fixed inside the housing.

[0010] Furthermore, a window for an industrial camera to capture images is provided in the middle of the front sidewall of the housing, and the window is positioned directly opposite the lens of the industrial camera.

[0011] Furthermore, an annular polarization light source assembly is fixed to the front outer wall of the housing, and the annular polarization light source assembly is electrically connected to the controller.

[0012] Furthermore, the adjustable polarizer assembly is fixed to the left side of the industrial camera lens via a first electric actuator.

[0013] Furthermore, the adjustable polarizer assembly is fixed to the end of the telescopic end of the first electric push rod, and the fixed end of the first electric push rod is fixedly connected to the front inner sidewall of the housing.

[0014] Furthermore, the near-infrared auxiliary lighting assembly includes an infrared LED ring and a bandpass filter, wherein the infrared LED ring is fixed on the front outer side wall of the housing, and the bandpass filter is fixed to the right side of the industrial camera lens by a second electric push rod.

[0015] Furthermore, the bandpass filter is fixed to the end of the telescopic end of the second electric push rod, and the fixed end of the second electric push rod is fixedly connected to the front inner sidewall of the housing.

[0016] Furthermore, both the first and second electric actuators are electrically connected to the controller.

[0017] Furthermore, a photosensitive sensor is also provided inside the housing, which is positioned above the industrial camera and is electrically connected to the controller.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] This invention utilizes adjustable polarizer components and near-infrared auxiliary illumination components on both sides of an industrial camera. When the packaging surface is highly reflective and scanning of the information identification code on the packaging is impossible, the adjustable polarizer components minimize specular reflection, ensuring normal scanning. In low-light / dark environments, the near-infrared auxiliary illumination components significantly improve the recognition rate of the information identification code, thereby reducing the interference of ambient light on the scanning of the packaging information code and improving the accuracy of information recognition. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the image reading device structure in an embodiment of the present invention;

[0021] Figure 2 This is a diagram showing the positional relationship between the adjustable polarizer assembly and the near-infrared auxiliary illumination assembly in an embodiment of this utility model.

[0022] Figure 3 This is a schematic diagram of the adjustable polarizer assembly structure in an embodiment of the present invention;

[0023] Figure 4This is a schematic diagram of the information recognition system structure in an embodiment of this utility model;

[0024] The components include: 1. Base plate; 2. Bracket; 3. Housing; 4. Industrial camera; 5. Adjustable polarizer assembly; 51. Mounting frame; 52. Polarizer; 53. Light outlet; 54. Adjustment port; 55. Micro motor; 56. Gear; 57. Ball bearing receiving hole; 58. Ball bearing; 6. Infrared LED ring; 61. Bandpass filter; 7. Annular polarized light source assembly; 8. Photosensitive sensor; 9. Controller; 10. First electric actuator; 11. Second electric actuator. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] A typical embodiment of this utility model is as follows: Figure 1 and Figure 4 As shown, a packaging information identification system includes an image reading device, an information storage device, and a data synchronization device. The image reading device is connected to the information storage device via a data connection cable. The image reading device can identify the information code on the packaging and transmit the information in the information code to the information storage device for storage. The information storage device is wirelessly connected to the data synchronization device, and the information stored in the information storage device can be uploaded to the data synchronization device, thereby realizing the input and updating of information.

[0027] Specifically, the image reading device includes a base plate 1, and a housing 3 is connected to the base plate 1 via a bracket 2. An industrial camera 4, an adjustable polarizer assembly 5, and a near-infrared auxiliary illumination assembly are installed inside the housing 3. The adjustable polarizer assembly 5 and the near-infrared auxiliary illumination assembly are located on the left and right sides of the industrial camera 4, respectively. A window for the industrial camera 4 to acquire images is opened in the middle of the front side wall of the housing 3, and the window is set directly opposite the lens of the industrial camera 4.

[0028] A controller 9 is installed on the base plate 1. The controller 9 is electrically connected to the industrial camera 4, the adjustable polarizer assembly 5, and the near-infrared auxiliary lighting assembly.

[0029] Among them, the industrial camera 4 is used to capture the information code on the packaging, and its resolution is not less than 2MP to ensure the clarity of the captured image; the annular polarization light source assembly 7 is fixed on the front outer wall of the housing 3. The annular polarization light source assembly 7 is located on the left side of the window. The annular polarization light source assembly 7 is electrically connected to the controller 9. The annular polarization light source assembly 7 is a linear polarization film attached to the outside of the LED annular diffuse light source to fix the polarization direction of the light source.

[0030] like Figure 2As shown, the adjustable polarizer assembly 5 is fixed to the left side of the lens of the industrial camera 4 via the first electric push rod 10. The adjustable polarizer assembly 5 is fixed to the end of the telescopic end of the first electric push rod 10, and the fixed end of the first electric push rod 10 is fixedly connected to the front inner side wall of the housing 3. When needed, the adjustable polarizer assembly 5 can be pushed in front of the lens of the industrial camera 4 using the first electric push rod 10. The adjustable polarizer assembly 5 can automatically adjust the angle of the polarizer 52 to make it perpendicular to the polarization direction of the reflected light, so as to reduce the interference of reflections on the packaging on the image and enhance the information reading capability.

[0031] Specifically, such as Figure 3 As shown, the adjustable polarizer assembly 5 includes a mounting frame 51. The mounting frame 51 has a placement slot for placing a polarizer 52, and the polarizer 52 can rotate within the placement slot. Light emission ports 53 are provided on both sides of the mounting frame 51. The two light emission ports 53 are located on the front and rear sides of the polarizer 52 and are respectively arranged corresponding to the polarizer 52. An adjustment port 54 is also provided on one side wall of the mounting frame 51. The adjustment port 54 is located on the side of the light emission port 53 and is spaced at a set distance from the light emission port 53. Multiple bolt holes are provided around the adjustment port 54, and a micro motor 55 is fixedly connected to it by bolts. The output shaft of the micro motor 55 passes through the adjustment port 54 and enters the interior of the mounting frame 51. A gear 56 is fixed on the output shaft of the micro motor 55. The polarizer 52 is circular and has teeth on its edge. The gear 56 meshes with the teeth. The micro motor 55 can drive the polarizer 52 to rotate, thereby adjusting the angle of the polarizer 52.

[0032] The micro motor 55 is a common motor on the market. The micro motor 55 is electrically connected to the controller 9, and the controller 9 controls the movement of the micro motor 55.

[0033] Furthermore, multiple ball bearing receiving holes 57 are provided on both inner walls of the mounting frame 51. The multiple ball bearing receiving holes 57 are evenly arranged around the light outlet 53. A ball bearing 58 is provided in the ball bearing receiving hole 57. The bottom of the ball bearing 58 protrudes from the ball bearing receiving hole 57. Annular grooves are provided on both sides of the polarizer 52. The annular grooves are corresponding to the ball bearing receiving holes 57. The bottom of the ball bearing 58 can be placed in the annular groove, thereby realizing the rotation of the polarizer 52 within the mounting frame 51.

[0034] Because the packaging is placed in different positions, the polarization angle of the reflected light is also different. The micro motor 55 drives the polarizer 52 to rotate, so as to adjust the angle of the polarizer 52 until the controller 9 can successfully read the information code on the image captured by the industrial camera 4.

[0035] like Figure 2As shown, the near-infrared auxiliary illumination component is fixed to the right side of the industrial camera 4, including an infrared LED ring 6 and a bandpass filter 61. The infrared LED ring 6 is annular and fixed to the front outer wall of the housing 3, located on the right side of the window. The infrared LED ring 6 is electrically connected to the controller 9 and can generate a near-infrared light source. The bandpass filter 61 is fixed to the right side of the lens of the industrial camera 4 by a second electric push rod 11. Specifically, the bandpass filter 61 is fixed to the end of the telescopic end of the second electric push rod 11, and the fixed end of the second electric push rod 11 is fixedly connected to the front inner wall of the housing 3. When needed, the bandpass filter 61 can be pushed in front of the lens of the industrial camera 4 by the second electric push rod 11 to assist imaging in low-light environments, thereby acquiring NIR images without color glare interference.

[0036] The first electric actuator 10 and the second electric actuator 11 are both common miniature electric actuators on the market. The first electric actuator 10 and the second electric actuator 11 are both electrically connected to the controller 9, and the controller 9 controls the movement of the first electric actuator 10 and the second electric actuator 11.

[0037] The housing 3 also includes a photosensitive sensor 8, which is positioned above the industrial camera 4 to detect the ambient brightness. The photosensitive sensor 8 is electrically connected to the controller 9. The photosensitive sensor 8 detects the ambient brightness, and the controller 9 controls the opening and closing of the annular polarized light source assembly 7, the adjustable polarizer assembly 5, and the near-infrared auxiliary lighting assembly based on the ambient brightness.

[0038] Once the packaging is transported to the processing workshop or logistics node, the information code on the packaging is identified by an image reading device set on the conveyor belt or barcode scanner, and the ambient brightness is determined by a photosensitive sensor 8, thereby recording information for different scenarios.

[0039] When under normal ambient light (ambient light ≥ 100 lux), the photosensitive sensor 8 continuously monitors the ambient brightness. When it is determined to be normal lighting, the controller 9 controls all auxiliary light sources to turn off, and at the same time controls the polarizer 52 to retract to the standby position, without interfering with imaging, and controls the industrial camera 4 to acquire information code images with standard parameters.

[0040] In high-reflectivity scenarios (normal lighting but reflection artifacts or decoding failure): When the light intensity is ≥100 lux and the controller 9 detects a high-reflectivity artifact or the first decoding fails, the polarization mode is triggered. The controller 9 controls the ring polarization light source component 7 to automatically illuminate the object surface. The ring polarization light source component 7 emits light waves with a fixed polarization direction. Simultaneously, the first electric push rod 10 pushes the polarizer 52 in front of the industrial camera 4 lens. The micro motor 55 rotates the polarizer 52 to adjust its angle, effectively reducing strong light caused by specular reflection. By controlling the polarization direction of the light source and effectively filtering out strong reflected light using the polarizer 52, the reflection phenomenon in the image is prevented from affecting the clarity of the object surface details, thus suppressing specular reflection to the maximum extent. The industrial camera 4 re-captures the image, and the controller 9 re-preprocesses and decodes the new image until successful or enters the prompt rescan process.

[0041] In low-light / dark-light environments (ambient light < 50 lux): when the photosensor 8 detects light levels below a threshold, the controller 9 activates the infrared LED ring 6 for illumination. The infrared LED ring 6 emits near-infrared light with a wavelength of 850nm. The second electric push rod 11 pushes the bandpass filter in front of the industrial camera 4 lens. The bandpass filter allows light in the 850nm ± 10nm wavelength range to pass through, meaning only the near-infrared light emitted by the infrared LED ring 6 is allowed to enter. Near-infrared light has a longer wavelength than visible light, therefore it does not cause strong reflections or produce strong glare (like visible light sources). In low-light environments, using near-infrared light sources can significantly reduce interference caused by reflections or halos, improve image quality in low-light conditions, ensure image clarity, and increase recognition rates in low-light environments.

[0042] The controller 9 is connected to the information storage device via a data connection cable. The controller 9 decodes the information code captured by the industrial camera 4 and pushes the decoded JSON format data and necessary original image cache to the information storage device in real time via the data connection cable. In case of disconnection, the data is cached locally for reconnection and uploading.

[0043] The information storage device can be a solid-state drive, a hard disk drive, or network-attached storage. After receiving the information transmitted by the image reading device, it stores the information contained in the obtained packaging information code (harvest time, variety number, batch number, geographical coordinates, etc.) and records it as original information to prevent the loss of recorded information.

[0044] The information storage device and the data synchronization device are wirelessly connected. The information storage device uploads the stored information to the data synchronization device. The data synchronization device wirelessly connects with two or more data synchronization devices in different locations, stores the information codes that have been stored locally, and synchronizes them to one or more other data synchronization devices. The information code information is recorded and backed up online, and the scanning time of the information code is recorded to facilitate the differentiation of information codes that have been scanned a second or multiple times in terms of time, thereby completing the recording of agricultural product information for different time periods.

[0045] Consumers can scan the information code on the packaging through WeChat mini-program, APP, or webpage to check the detailed traceability information of the batch of agricultural products, including: planting location, harvest time, variety, circulation timeline, whether it is cold chain transportation, sales channels, and whether it is a high-quality certified product.

[0046] By setting adjustable polarizer components 5 and near-infrared auxiliary illumination components on both sides of the industrial camera 4, when the packaging surface is highly reflective and the information identification code on the packaging cannot be scanned, the adjustable polarizer components 5 are used to suppress specular reflection to the maximum extent to ensure normal scanning. When the near-infrared auxiliary illumination component is used for illumination in a low light / dark light environment, the recognition rate of the information identification code is significantly improved, thereby reducing the interference of ambient light on the scanning of the packaging information code and improving the accuracy of information recognition.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A packaging information identification system, characterized in that, It includes an image reading device, an information storage device, and a data synchronization device. The image reading device is connected to the information storage device via a data connection cable, and the information storage device and the data synchronization device are wirelessly connected. The image reading device includes an industrial camera, an adjustable polarizer assembly, a near-infrared auxiliary illumination assembly, and a controller. The adjustable polarizer assembly and the near-infrared auxiliary illumination assembly are located on both sides of the industrial camera, and the industrial camera, the adjustable polarizer assembly, and the near-infrared auxiliary illumination assembly are all electrically connected to the controller.

2. The packaging information identification system as described in claim 1, characterized in that, The image reading device includes a base plate, and a housing is connected to the base plate via a bracket. An industrial camera, an adjustable polarizer assembly, and a near-infrared auxiliary illumination assembly are all fixed inside the housing.

3. The packaging information identification system as described in claim 2, characterized in that, A window for an industrial camera to capture images is provided in the middle of the front sidewall of the housing, and the window is positioned directly opposite the lens of the industrial camera.

4. The packaging information identification system as described in claim 2, characterized in that, An annular polarization light source assembly is fixed to the front outer wall of the housing, and the annular polarization light source assembly is electrically connected to the controller.

5. A packaging information identification system as described in claim 2, characterized in that, The adjustable polarizer assembly is fixed to the left side of the industrial camera lens via a first electric push rod.

6. The packaging information identification system as described in claim 5, characterized in that, The adjustable polarizer assembly is fixed to the end of the telescopic end of the first electric push rod, and the fixed end of the first electric push rod is fixedly connected to the front inner sidewall of the housing.

7. A packaging information identification system as described in claim 5, characterized in that, The near-infrared auxiliary lighting assembly includes an infrared LED ring and a bandpass filter, wherein the infrared LED ring is fixed on the front outer side wall of the housing, and the bandpass filter is fixed to the right side of the industrial camera lens by a second electric push rod.

8. A packaging information identification system as described in claim 7, characterized in that, The bandpass filter is fixed to the end of the telescopic end of the second electric push rod, and the fixed end of the second electric push rod is fixedly connected to the front inner side wall of the housing.

9. A packaging information identification system as described in claim 7, characterized in that, Both the first and second electric actuators are electrically connected to the controller.

10. A packaging information identification system as described in claim 2, characterized in that, A photosensitive sensor is also installed inside the housing. The photosensitive sensor is positioned above the industrial camera and is electrically connected to the controller.

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