Scanning recognition device

Abstract

The utility model discloses an embodiment discloses a kind of scanning identification device, the device includes: main casing, optical detection long arm is suspendedly arranged on it;First camera, it is set to the scanning end of optical detection long arm;Second camera, immediately adjacent to first camera, it is set to the scanning end of optical detection long arm, the central axis of the first camera, the second camera is parallel and visual field direction and visual field range are same, and the scanning pixel of first camera is higher than second camera, and scanning frame rate is less than second camera;And display, movably set to the top of main casing, electrically connected to first camera, second camera and is used to show the scanning picture and / or result of first camera and / or second camera.The utility model is by integrated double camera cooperative imaging and rectangular illumination system, and the versatility and applicability of scanning identification device are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of optical detection, and in particular to a scanning and recognition device. Background Technology

[0002] Existing scanning equipment is not adaptable enough to dynamic and static scenes. A single camera or fixed parameter design cannot meet the requirements of high-precision static imaging and high-speed dynamic tracking, resulting in limited recognition efficiency and accuracy in complex scenes, and thus poor versatility. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide a scanning and recognition device to improve the versatility of scanning and recognition.

[0004] To address the aforementioned technical problems, this utility model embodiment proposes that the scanning and identification device includes: The main housing has an optical detection arm suspended above it; The first camera is located at the scanning end of the optical detection arm; The second camera, adjacent to the first camera, is positioned at the scanning end of the optical detection arm. The central axes of the first and second cameras are parallel, and their fields of view and ranges are the same. The first camera has a higher pixel count than the second camera, and its frame rate is lower. A display is movably mounted on the top of the main housing, electrically connected to the first camera and the second camera, and used to display the scan images and / or results from the first camera and / or the second camera.

[0005] Furthermore, the housing at the corresponding position of the scanning end has a receiving groove, and the first camera and the second camera are arranged and fixed in the receiving groove along the extension direction of the optical detection arm. A recessed surface is opened at the opening of the receiving groove, and a light-transmitting dustproof plate is fixed in the recessed surface.

[0006] Furthermore, the scanning and recognition device also includes: an illumination module that emits rectangular light, which is inclinedly disposed at the beginning of the optical detection arm; and a rectangular tray disposed at the bottom of the main housing to support the document to be scanned.

[0007] Furthermore, the scanning and recognition device also includes an inclined plate that is tilted at the beginning of the optical detection arm. A rectangular hole is opened on the inclined plate, and an illumination module is embedded inside the rectangular hole. The illumination module includes a polarizer that is attached and fixed to the inner edge of the rectangular hole, and a light source that is closely attached to the inner side of the polarizer.

[0008] Furthermore, the light source consists of multiple horizontally arranged LED light strips, with brightness decreasing from top to bottom, or it can be an LED direct-lit panel light or an LED side-emitting panel light.

[0009] Furthermore, the light illuminating the tray through the rectangular hole, and the field of view of the first and second cameras relative to the tray, are all matched to the shape and size of the tray.

[0010] Furthermore, the tray is retractably mounted at the bottom of the main housing.

[0011] Furthermore, the angle between the illumination axis of the light source and the horizontal plane is 130° to 170°, and the angle between the inclined plate and the horizontal plane is 40° to 80°.

[0012] Furthermore, a fingerprint recognition device is embedded on the top panel of the scanning end.

[0013] Furthermore, the camera module consisting of the first camera and the second camera is movably installed in the receiving slot through a magnetic or snap-fit ​​structure. The camera module has a built-in rechargeable power supply and a second wireless transmission module that communicates wirelessly with the first wireless transmission module built into the scanning and recognition device.

[0014] This novel scanning and recognition device features a first camera for high-precision detail capture of static documents and a second camera for real-time tracking of dynamic trajectories. The two cameras are positioned adjacent to each other, with their fields of view completely overlapping, achieving seamless integration between static and dynamic scenes, thus accurately identifying static or dynamic targets. In this invention, the integrated dual cameras utilize the same field of view and angle to ensure strict spatial alignment of the scanning data from both cameras, and are compatible with various scanning objects, significantly improving the versatility and applicability of the scanning and recognition device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the scanning and recognition device according to an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 A schematic diagram of another state of the scanning and recognition device shown.

[0017] Figure 3 This is a schematic diagram of the structure of the optical detection arm according to an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the magnetic mounting structure of an embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of the snap-fit ​​installation structure of an embodiment of this utility model.

[0020] Figure 6 This is a schematic diagram of the camera module structure in the snap-fit ​​structure of this utility model embodiment.

[0021] Figure 7This is a schematic diagram of the structure of the paddle in an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures First camera 211 Second camera 212 Fingerprint recognition device 213 Inclined plate 22 Lighting Module 221 Monitor 3 Magnetic structure 4 Permanent magnet 41 Snap-fit ​​structure 5 Pick 51 Detailed Implementation

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In this embodiment of the invention, directional indicators (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicators will also change accordingly. Example 1

[0025] Current scanners cannot simultaneously perform static and dynamic recognition functions. Please refer to... Figure 1 This utility model provides a scanning and recognition device, including a main housing 1, an optical detection arm 2, a first camera 211, a second camera 212, and a display 3.

[0026] The main housing 1 is made of aluminum alloy and has strip-shaped heat dissipation vents symmetrically arranged on both sides. An optical detection arm 2 is suspended above it. The optical detection arm 2 is made of aluminum alloy and is connected to the main housing 1 at the beginning. The width of the arm gradually narrows from the beginning to the end, and the end is the scanning end 21.

[0027] The first camera 211 is located at the end of the scanning end 21 closest to the main housing 1, and the second camera 212 is located next to the first camera 211 at the end of the scanning end 21 furthest from the main housing 1. At the same time, the positions of the first camera 211 and the second camera 212 on the scanning end 21 can be interchanged according to actual installation requirements to ensure that they can be adapted to scanning requirements in different installation environments.

[0028] The central axes of the first camera 211 and the second camera 212 are parallel to each other and their lenses face the same direction to cover the same field of view. The first camera 211 is 8 megapixels and operates at 30fps, used for high-precision OCR recognition of static images; the second camera 212 is 2 megapixels and operates at 60fps, used for fast capture of dynamic scenes. The scanning pixel count of the first camera 211 is higher than that of the second camera 212, but its scanning frame rate is lower. The first camera 211 performs high-resolution recognition of images such as QR codes in static scenes (e.g., QR codes or barcodes on tickets); the second camera 212 recognizes images such as QR codes in dynamic scenes (e.g., QR codes displayed on mobile phone screens), thereby achieving complementary and collaborative functions of high frame rate dynamic perception and high pixel static resolution.

[0029] The display 3 is movably mounted on the top of the main housing 1 and suspended on one side near the optical detection arm 2. The display 3 is electrically connected to the first camera 211 and the second camera 212 and is used to display their scanning images and / or recognition results in real time. Example 2

[0030] The scanning end 21 of the optical detection arm 2 has a receiving groove, which is set along the extension direction of the optical detection arm 2 and is used to embed and fix the first camera 211 and the second camera 212. The opening of the receiving groove is square and faces downward. A recessed stepped surface is formed around the opening. A light-transmitting dustproof plate that matches the shape of the opening is embedded in the recessed surface. The light-transmitting dustproof plate is made of high light transmittance glass and coated with an anti-reflective coating. This ensures high light transmittance in the optical path while effectively preventing dust, moisture and other contaminants from entering the receiving groove, thus ensuring the long-term reliable operation of the dual cameras. Example 3

[0031] refer to Figures 1-3 The optical detection arm 2 includes an inclined plate 22 at its starting end, with a rectangular hole on its surface that matches the illumination module 221. The illumination module 221 emits a rectangular light pattern by embedding itself in the rectangular hole, ensuring that the illumination light completely covers the rectangular tray 11. The light source assembly of the illumination module 221 is positioned close to the inner side of the polarizer, which is fixed to the inner edge of the rectangular hole. By limiting stray light from undesired directions, the directionality and uniformity of the illumination light are enhanced. The light source forms a rectangular spot after passing through the polarizer, which is then projected onto the surface of the document on the tray 11 through the rectangular hole of the inclined plate 22. This ensures sufficient illumination intensity while reducing reflection interference, thereby improving the clarity and recognition accuracy of the scanned image.

[0032] Specifically, the lighting module 221 projects illumination light evenly onto the surface of the tray 11 through a rectangular hole on the inclined plate 22, ensuring that the shape of the rectangular hole perfectly matches the rectangular outline of the tray 11. This guarantees that the light can cover the entire area of ​​the tray 11 with aligned edges, preventing the illuminated area from exceeding or deviating from the range of the tray 11. The first camera 211 and the second camera 212 are installed sequentially along the extension direction of the optical detection arm 2, with their lenses perpendicular to the surface of the tray 11. By adjusting the installation height and focal length, the field of view of the first and second cameras 212 precisely corresponds to the rectangular shape of the tray 11, thereby enabling complete capture of the image information of the tickets on the tray 11 during scanning. This structure is suitable for both dynamic and static scanning, is highly versatile, and operates within the same scanning area, offering user-friendly, convenient, and efficient operation. Example 4

[0033] Existing scanning devices still have shortcomings in their optical system design. On the one hand, the illumination is uneven; on the other hand, it is difficult to effectively avoid interference from strong reflections of the light source, affecting the scanning imaging quality. Building upon Embodiment 3, in this embodiment, the light source consists of multiple horizontally arranged LED strips. These strips are uniformly distributed horizontally within the internal structure of the lamp, forming a continuous illumination source. By adjusting the driving current or LED density of each strip, the light source exhibits a gradually decreasing brightness distribution from top to bottom. This gradient illumination effectively compensates for potential far-end illumination attenuation within the scanning area, thereby obtaining a more uniform overall light field distribution.

[0034] Specifically, in one embodiment, brightness variation is achieved by adjusting the driving current of each LED strip or LED chip. The driving current of the upper LED strip is larger, and the driving current of the lower strip is smaller, thus forming a brightness distribution from strong to weak to compensate for uneven illumination intensity caused by distance differences. In another embodiment, based on the above embodiments, brightness variation can also be achieved by changing the arrangement density of LED chips. With the current remaining constant, the chip density of horizontally arranged LED strips gradually decreases from top to bottom. High-density areas are brighter due to more LEDs emitting light, while low-density areas are less bright due to fewer LEDs. In an inclined lighting module, the denser LEDs at the top need to illuminate further, while the LEDs at the bottom illuminate at a shorter distance, thus achieving a more uniform brightness distribution when light is projected onto the tray. Both methods can be used independently or in combination, flexibly configured according to the actual optical path and structural layout to further optimize illumination uniformity.

[0035] This embodiment serves as an alternative to the above-described embodiment. The light source structure can also be adapted to two types of LED direct-lit panel lights or LED side-lit panel lights: In direct-lit panel lights, the LED strips are directly mounted at the bottom of the luminaire, and the light is uniformly projected upwards through the optical design of the lens and back cover. A diffuser plate then forms a glare-free, uniform surface light source with high luminous efficiency and a stable structure. In side-lit panel lights, the LED strips are positioned on the side of the luminaire as a side-emitting light source, and the light is transmitted through a light guide plate to form a uniform light surface. Regardless of the panel light structure used, by controlling the brightness distribution of the LED strips, a natural transition in luminous efficiency from top to bottom can be achieved, satisfying the lighting needs of different height areas and significantly improving the contrast and edge sharpness of the scanned image. Example 5

[0036] The bottom of the main housing 1 is provided with a rectangular tray 11 for holding the documents to be scanned. The tray 11 is retractable and can be moved smoothly along a preset path on the bottom of the main housing 1. When needed, the tray can be pulled out from inside the main housing to the outside, providing sufficient space for the user to place the documents to be scanned; when not in use, the tray can be completely retracted into the main housing, reducing space occupation and preventing foreign objects from entering the device, thus improving the space utilization of the device. Example 6

[0037] Based on Embodiment 3, an inclined plate 22 is provided at the bottom of the optical detection arm 2. The angle between the inclined plate 22 and the horizontal plane is 40° to 80°, preferably 60°. The angle between the light source's corresponding illumination axis and the horizontal plane is 130° to 170°, preferably 150°. At this time, the light illuminating the tray surface is at the optimal angle, which can effectively reduce the interference of reflected light on the imaging system. The illumination angle of the light source can also be finely adjusted by adjusting the tilt angle of the inclined plate, so as to achieve the best scanning effect for scanning objects of different sizes and shapes. Example 7

[0038] Based on Embodiment 1, a fingerprint recognition device 213 is embedded in the top plate of the scanning end 21 through an opening structure. The sensing area of ​​the fingerprint recognition device 213 is completely embedded inside the plate, with only the transparent or matte surface used for fingerprint collection exposed, avoiding obstruction or wear from external foreign objects. This structural design seamlessly integrates the fingerprint recognition device 213 into the top of the scanning end 21, satisfying the need for a simple overall appearance of the device while improving the protection level of the device through physical embedding, thus enhancing the security and operational controllability of the device. Example 8

[0039] Existing scanning devices lack flexible camera module designs, making them unable to be adjusted and adapted to different scenarios and needs, thus limiting the applicability and ease of operation of the equipment. Movable installation solves this problem. This embodiment differs from Embodiment 1 in that, in specific implementation, the camera module is movably installed in the receiving slot via a magnetic suction structure 4 or a snap-fit ​​structure 5: see [link to embodiment]. Figure 4 When the magnetic structure 4 is used, a permanent magnet 41 is embedded in the inner wall of the receiving groove in the scanning end 21, and a ferromagnetic material or matching magnetic ring is set at the position of the permanent magnet 41 in the camera module. The camera module can be stably attracted and quickly disassembled by magnetic force. See Figures 5-7 When the snap-fit ​​structure 5 is used, the camera module is provided with an elastic lever 51 and a locking mechanism on the top. The top wall of the receiving groove is provided with a groove that matches the locking structure and a slide rail that matches the camera module. By pushing the camera module along the slide rail into the receiving groove, the elastic lever 51 is squeezed and deformed, which drives the locking mechanism to snap into the groove. Then, by pressing the elastic lever 51, the locking mechanism is disengaged from the groove, and the camera module can be slid out and disassembled, realizing convenient disassembly and maintenance.

[0040] It is worth noting that the magnetic structure also adopts this slide rail design. The difference is that the magnetic structure uses magnetic force to achieve positioning and fixation, while the snap-fit ​​structure relies on mechanical locking. Both take into account the stability of installation and the convenience of disassembly.

[0041] The camera module has a built-in rechargeable power supply, integrated within the camera body. Power is supplied via a charging interface or contacts pre-drilled on the inner wall of the receiving slot using the optical detection arm 2, ensuring the camera remains capable of independent operation even when detached from the scanning and recognition device. The camera module also integrates a second wireless transmission module that matches the first wireless transmission module built into the scanning and recognition device. The two modules establish a wireless connection via a preset communication protocol, supporting real-time image data transmission and bidirectional interaction of control commands. This embodiment enhances the maintainability and expandability of the camera through modular installation. Combined with the built-in power supply and wireless communication capabilities, the camera module maintains a compact structure while achieving flexible deployment and efficient data interaction, meeting the dynamic detection needs of various scenarios.

[0042] Working principle; After the device is started, the user performs fingerprint verification through the fingerprint recognition device 213 embedded in the top of the scanning end 21. This fingerprint verification is used for business processes such as login and authorization. The user pulls out the tray 11 completely and places the document to be scanned on the surface of the tray 11. The illumination module 221 projects a rectangular light pattern onto the tray 11 through the rectangular hole on the tilting plate 22 to form uniform illumination and improve the image clarity of the document surface. The scanning end 21 of the optical detection arm 2 is equipped with a first camera 211 and a second camera 212. The first camera 211 captures static detail images in high-pixel mode, and the second camera 212 tracks dynamic trajectories at a high frame rate. The display 3 simultaneously receives and processes the images from the two cameras, and finally completes the document recognition and outputs the results.

[0043] Based on the solution in Embodiment 8, during the entire scanning process, the camera module can be removed from the receiving slot and moved to any angle for multi-view supplementary shooting according to the detection requirements. Its built-in power supply and wireless transmission module ensure that it can continue to work and maintain connection with the system after being separated from the main device.

[0044] 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 scanning and identification device, characterized in that, The scanning and recognition device includes: The main housing has an optical detection arm suspended above it; The first camera is located at the scanning end of the optical detection arm; The second camera, adjacent to the first camera, is positioned at the scanning end of the optical detection arm. The central axes of the first and second cameras are parallel, and their fields of view and ranges are the same. The first camera has a higher pixel count than the second camera, and its frame rate is lower. A display is movably mounted on the top of the main housing, electrically connected to the first camera and the second camera, and used to display the scan images and / or results from the first camera and / or the second camera.

2. The scanning and recognition device as described in claim 1, characterized in that, The housing at the corresponding position of the scanning end has a receiving groove. The first camera and the second camera are arranged and fixed in the receiving groove along the extension direction of the optical detection arm. A recessed surface is opened at the opening of the receiving groove, and a light-transmitting dustproof plate is fixed in the recessed surface.

3. The scanning and recognition device as described in claim 1, characterized in that, The scanning and recognition device further includes: An illumination module that emits a rectangular beam of light is tilted and positioned at the beginning of the optical detection arm. A rectangular tray located at the bottom of the main housing to hold the ticket to be scanned.

4. The scanning and recognition device as described in claim 3, characterized in that, The scanning and recognition device also includes an inclined plate that is tilted at the beginning of the optical detection arm, and a rectangular hole is opened on the inclined plate, into which the illumination module is embedded. The lighting module includes a polarizer fixed to the inner edge of a rectangular hole and a light source disposed close to the inner side of the polarizer.

5. The scanning and recognition device as described in claim 4, characterized in that, The light source consists of multiple horizontally arranged LED strips, with brightness decreasing from top to bottom; it can be either a direct-lit LED panel light or a side-lit LED panel light.

6. The scanning and recognition device as described in claim 4, characterized in that, The light source shines onto the tray through the rectangular hole, and the field of view of the first and second cameras relative to the tray are all matched with the shape and size of the tray.

7. The scanning and recognition device as described in claim 3, characterized in that, The tray is retractably mounted at the bottom of the main housing.

8. The scanning and identification device as described in claim 1, characterized in that, The angle between the light source's corresponding illumination axis and the horizontal plane is 130° to 170°, and the angle between the inclined plate and the horizontal plane is 40° to 80°.

9. The scanning and identification device according to any one of claims 1 to 8, characterized in that, A fingerprint recognition device is embedded on the top panel of the scanner.

10. The scanning and identification device according to any one of claims 1 to 8, characterized in that, The camera module, consisting of the first camera and the second camera, is movably installed in the receiving slot via a magnetic or snap-fit ​​structure. The camera module has a built-in rechargeable power supply and a second wireless transmission module that communicates wirelessly with the first wireless transmission module built into the scanning and recognition device.

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