Optical character recognition device

Abstract

The utility model discloses an optical character recognition device, which belongs to the technical field of visual inspection and comprises a lifting slide rail, a height frame slidably connected onto the lifting slide rail, a recognition camera fixedly connected onto the height frame and two irradiation lamps rotatably connected onto the height frame, and the two irradiation lamps are positioned on two symmetrical sides of the recognition camera. An adjusting mechanism is arranged between the height frame and the two irradiation lamps, and the adjusting mechanism is used for adjusting the irradiation angles of the two irradiation lamps; the two irradiation lamps are matched to recognize the height of the camera, the irradiation angle is adjusted through the adjusting mechanism, and accurate oblique irradiation lighting is kept on the surface of a product, so that tiny details on the surface of the product are highlighted, the illumination effect and the reflection effect are guaranteed, and recognition of the recognition camera on characters on the surface of the product is kept in a clear recognition state.

Description

Technical Field

[0001] The utility model relates to the technical field of visual detection, and more specifically to an optical character recognition device. Background Art

[0002] OCR (Optical Character Recognition) refers to the process in which an electronic device (such as a scanner or digital camera) examines characters printed on paper, determines their shapes by detecting dark and light patterns, and then uses character recognition methods to translate the shapes into computer text; that is, for printed characters, an optical method is used to convert the text in a paper document into a black and white dot matrix image file, and recognition software is used to convert the text in the image into a text format for further editing and processing by word processing software.

[0003] At present, when an optical character recognition device recognizes characters on a product, it illuminates the product through a lighting device and recognizes the characters on the product using a recognition camera. However, the illumination angle of the lighting device equipped on most existing optical character recognition devices is usually fixed. When the height of the recognition camera is adjusted according to the height of the characters on the product, the illumination angle of the lighting device cannot be adjusted according to the height of the recognition camera, which affects the reflection effect, resulting in poor lighting effect and blurred text recognized by the optical character recognition. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide an optical character recognition device, aiming to solve the problem that the illumination angle of the lighting device equipped on the optical character recognition device in the prior art is usually fixed. When the height of the recognition camera is adjusted according to the height of the characters on the product, the illumination angle of the lighting device cannot be adjusted according to the height of the recognition camera, which affects the reflection effect, resulting in poor lighting effect and blurred text recognized by the optical character.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the utility model adopts the following technical solutions:

[0008] An optical character recognition device comprises a lifting rail, a height frame is slidably connected to the lifting rail, a recognition camera is fixedly connected to the height frame, two irradiation lamps are rotatably connected to the height frame, and the two irradiation lamps are located on two symmetrical sides of the recognition camera, an adjustment mechanism is arranged between the height frame and the two irradiation lamps, and the adjustment mechanism is used to adjust the irradiation angles of the two irradiation lamps.

[0009] As a preferred solution of the utility model, the adjusting mechanism includes a U-shaped plate, two sliding openings, two triangular sliders, two racks, two intermittent gears, an adjusting block and a threaded rod. The U-shaped plate is fixedly connected to the top of the height frame, the two sliding openings are respectively opened at the symmetrical two side ends of the U-shaped plate, the two triangular sliders are respectively slidably connected to the two sliding openings, the two racks are respectively fixedly connected to the ends of the two triangular sliders that are away from each other, the two intermittent gears are respectively fixedly connected to the two irradiation lamps, and the two intermittent gears are respectively meshed with the two racks, the adjusting block is slidably connected to the U-shaped plate, and the two triangular sliders are respectively slidably connected to the symmetrical two side ends of the adjusting block, the threaded rod is threadedly connected to the U-shaped plate, and the bottom end of the threaded rod is rotatably connected to the top of the adjusting block.

[0010] As a preferred solution of the utility model, the two triangular sliders are each provided with an inclined sliding groove at one end close to the adjusting block, the adjusting block is fixedly connected with an inclined slider at both ends close to the two triangular sliders, and the two inclined sliders are respectively slidably connected in the two inclined sliding grooves.

[0011] As a preferred solution of the utility model, stable sliding grooves are excavated in the two sliding openings, sliding bars are fixedly connected to the two triangular sliding blocks, and the two sliding bars are slidably connected in the two stable sliding grooves respectively.

[0012] As a preferred solution of the utility model, a plug rod is fixedly connected to the bottom end of the adjustment block, and the plug rod slides through the upper and lower sides of the height frame.

[0013] As a preferred solution of the utility model, two fixed tubes are fixedly connected to the height frame, and two racks slide through the two fixed tubes respectively.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1) In this solution, the recognition camera is adjusted to a suitable position according to the height of the characters on the product surface to identify the product. The two illumination lamps cooperate with the height of the recognition camera, and the illumination angle is adjusted through the adjustment mechanism to maintain accurate oblique lighting on the product surface, thereby highlighting the tiny details on the product surface, ensuring the lighting effect and reflection effect, so that the recognition camera can maintain a clear recognition state for the characters on the product surface, and prevent the text from being blurred after optical character recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of some structures in the utility model;

[0019] Figure 3 For the utility model Figure 2 Exploded diagram.

[0020] Description of the numbers in the figure:

[0021] 1. Lifting slide rail; 2. Height rack; 3. Recognition camera; 4. Illumination lamp; 51. U-shaped plate; 52. Slide; 53. Triangular slider; 54. Rack; 55. Intermittent gear; 56. Adjustment block; 57. Threaded rod; 6. Inclined slide groove; 7. Inclined slider; 8. Stable slide groove; 9. Slide bar; 10. Insert rod; 11. Fixed tube. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-3An optical character recognition device includes a lifting rail 1, a height frame 2 is slidably connected to the lifting rail 1, a recognition camera 3 is fixedly connected to the height frame 2, two irradiation lamps 4 are rotatably connected to the height frame 2, and the two irradiation lamps 4 are located on both sides of the recognition camera 3, and an adjustment mechanism is arranged between the height frame 2 and the two irradiation lamps 4, and the adjustment mechanism is used to adjust the irradiation angles of the two irradiation lamps 4.

[0027] In this embodiment, when performing optical character recognition on a product, the lifting slide rail 1 drives the recognition camera 3 to adjust its height through the height frame 2 according to the height of the characters on the product, so that the recognition camera 3 moves to a suitable height to recognize the optical characters on the product. After the height adjustment of the recognition camera 3 is completed, the irradiation angle of the two irradiators 4 to the product is adjusted through the adjustment mechanism. The two irradiators 4 irradiate the product obliquely, thereby highlighting the tiny details on the surface of the product, so that the characters on the product can be clearly captured and recognized by the recognition camera 3 after irradiation.

[0028] Specifically, the adjustment mechanism includes a U-shaped plate 51, two slides 52, two triangular sliders 53, two racks 54, two intermittent gears 55, an adjustment block 56 and a threaded rod 57. The U-shaped plate 51 is fixedly connected to the top of the height frame 2. The two slides 52 are respectively opened at the symmetrical two side ends of the U-shaped plate 51. The two triangular sliders 53 are respectively slidably connected in the two slides 52. The two racks 54 are respectively fixedly connected to the ends of the two triangular sliders 53 that are away from each other. The two intermittent gears 55 are respectively fixedly connected to the two irradiation lamps 4, and the two intermittent gears 55 are respectively meshed with the two racks 54. The adjustment block 56 is slidably connected in the U-shaped plate 51, and the two triangular sliders 53 are respectively slidably connected to the symmetrical two side ends of the adjustment block 56. The threaded rod 57 is threadedly connected to the U-shaped plate 51, and the bottom end of the threaded rod 57 is rotatably connected to the top of the adjustment block 56.

[0029] In this embodiment, when the angle of the two illumination lamps 4 is adjusted according to the height of the recognition camera 3, the adjustment block 56 is moved up and down in the U-shaped plate 51 by rotating the threaded rod 57. During the movement of the adjustment block 56, the two triangular sliders 53 are driven to slide in opposite directions in the two sliding openings 52. The two triangular sliders 53 drive the two racks 54 to move. The two racks 54 adjust the angle of the two illumination lamps 4 on the height frame 2 through two intermittent gears 55. After the angle is adjusted, the two illumination lamps 4 cooperate with the recognition camera 3 to illuminate the product, so that the recognition camera 3 can clearly recognize the characters on the surface of the product.

[0030] Specifically, one end of the two triangular sliders 53 close to the adjustment block 56 is formed with an inclined sliding groove 6, and both ends of the adjustment block 56 close to the two triangular sliders 53 are fixedly connected with an inclined slider 7, and the two inclined sliders 7 are slidably connected in the two inclined sliding grooves 6 respectively.

[0031] In this embodiment, the adjusting block 56 drives the two inclined sliding blocks 7 to slide in the two inclined sliding grooves 6 respectively during the process of moving up and down, so that the two triangular sliding blocks 53 move in opposite directions.

[0032] Specifically, a stable slide groove 8 is excavated in each of the two slide openings 52 , a slide bar 9 is fixedly connected to each of the two triangular slide blocks 53 , and the two slide bars 9 are slidably connected in the two stable slide grooves 8 , respectively.

[0033] In this embodiment, the two triangular sliders 53 drive the two slide bars 9 to slide in the two stable slide grooves 8 during the movement. The sliding connection between the two slide bars 9 and the two stable slide grooves 8 enables the two triangular sliders 53 to maintain good stability during the movement.

[0034] Specifically, the bottom end of the adjustment block 56 is fixedly connected with the insertion rod 10 , and the insertion rod 10 slides through the upper and lower sides of the height frame 2 .

[0035] In this embodiment, the insertion rod 10 slides on the height frame 2 following the movement of the adjustment block 56 to ensure the stability of the adjustment block 56 when it moves up and down.

[0036] Specifically, two fixing tubes 11 are fixedly connected to the height frame 2 , and the two racks 54 slide through the two fixing tubes 11 , respectively.

[0037] In this embodiment, the two racks 54 slide in the two fixed tubes 11 respectively during the movement, and the two fixed tubes 11 are used to stabilize the movement of the two racks 54 .

[0038] Working principle: When performing optical character recognition on a product, the lifting rail 1 drives the recognition camera 3 to adjust its height through the height frame 2 according to the height of the characters on the product. After the height adjustment of the recognition camera 3 is completed, the adjusting block 56 is moved up and down in the U-shaped plate 51 by rotating the threaded rod 57. During the movement of the adjusting block 56, the two triangular sliders 53 are driven to slide in opposite directions in the two sliding openings 52. The two triangular sliders 53 drive the two racks 54 to move. The two racks 54 adjust the angles of the two illumination lamps 4 on the height frame 2 through two intermittent gears 55. After the angle is adjusted, the two illumination lamps 4 cooperate with the recognition camera 3 to illuminate the product, so that the characters on the product are clearly captured and recognized by the recognition camera 3 after being illuminated by the oblique line.

[0039] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. An optical character recognition device, comprising a lifting slide rail (1), characterized in that: A height frame (2) is slidably connected to the lifting rail (1), an identification camera (3) is fixedly connected to the height frame (2), two irradiation lamps (4) are rotatably connected to the height frame (2), and the two irradiation lamps (4) are located on two symmetrical sides of the identification camera (3), and an adjustment mechanism is provided between the height frame (2) and the two irradiation lamps (4), and the adjustment mechanism is used to adjust the irradiation angles of the two irradiation lamps (4).

2. An optical character recognition device according to claim 1, characterized in that: The adjustment mechanism comprises a U-shaped plate (51), two sliding openings (52), two triangular sliders (53), two racks (54), two intermittent gears (55), an adjustment block (56) and a threaded rod (57); the U-shaped plate (51) is fixedly connected to the top of the height frame (2); the two sliding openings (52) are respectively opened at two symmetrical side ends of the U-shaped plate (51); the two triangular sliders (53) are respectively slidably connected to the two sliding openings (52); the two racks (54) are respectively fixedly connected to the two triangular sliders (53); At one end of the angle slider (53) away from each other, the two intermittent gears (55) are respectively fixedly connected to the two irradiation lamps (4), and the two intermittent gears (55) are respectively meshed with the two racks (54), the adjustment block (56) is slidably connected in the U-shaped plate (51), and the two triangular sliders (53) are respectively slidably connected to the symmetrical two side ends of the adjustment block (56), the threaded rod (57) is threadedly connected to the U-shaped plate (51), and the bottom end of the threaded rod (57) is rotatably connected to the top end of the adjustment block (56).

3. An optical character recognition device according to claim 2, characterized in that: An inclined sliding groove (6) is formed at one end of the two triangular sliding blocks (53) close to the adjusting block (56), and an inclined sliding block (7) is fixedly connected at both ends of the adjusting block (56) close to the two triangular sliding blocks (53), and the two inclined sliding blocks (7) are slidably connected in the two inclined sliding grooves (6) respectively.

4. An optical character recognition device according to claim 3, characterized in that: Both of the two sliding openings (52) are provided with stable sliding grooves (8), and both of the two triangular sliding blocks (53) are fixedly connected with sliding bars (9), and the two sliding bars (9) are respectively slidably connected in the two stable sliding grooves (8).

5. An optical character recognition device according to claim 4, characterized in that: The bottom end of the adjustment block (56) is fixedly connected to an insertion rod (10), and the insertion rod (10) slides through the upper and lower sides of the height frame (2).

6. An optical character recognition device according to claim 5, characterized in that: Two fixed tubes (11) are fixedly connected to the height frame (2), and two racks (54) slide through the two fixed tubes (11) respectively.

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