An automatic turning-over high-speed scanner and an automatic shooting method
By using a hinged flip-plate structure and sensor-controlled high-speed document scanner, problems such as unclear recognition and large device size during the ID card flipping process have been solved. This enables automatic flipping and photographing of ID cards, avoids damage to the documents, and enhances the compatibility and ease of use of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HEFEI SHIZHIXIN ELECTRIC TECH CO LTD
- Filing Date
- 2026-04-09
- Publication Date
- 2026-05-29
AI Technical Summary
Existing document scanners have several drawbacks when photographing ID cards, including unclear identification of transparent areas, difficulty in focusing the camera, large size of the mechanical flipping device which can easily damage the document, and incompatibility with photographing different items.
It adopts two hinge-shaped flip-plate structures, which are respectively installed on the base. Equipped with a drive mechanism and a camera, it can achieve 180° flipping and synchronous flipping of the flip-plate. Combined with Hall sensor and photoelectric sensor for precise control, the ID card flips in a closed cavity to avoid clamping damage.
It enables automatic flipping and photographing of ID cards, avoiding damage to the documents, is compatible with photographing different items, and has a compact structure and is easy to use.
Smart Images
Figure CN122120385A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of document scanner technology, and in particular to an automatic flipping document scanner and an automatic shooting method. Background Technology
[0002] For document scanners that do not require manual flipping of the document when photographing ID cards, existing products employ two solutions.
[0003] The first approach is a dual-camera setup, where the area where the ID card is placed is transparent, with one camera positioned above and one below this area. The two cameras capture the front and back of the ID card respectively. The disadvantages of this approach are: 1. When photographing other types of paper, the content on the transparent area is easily unclear; 2. The lower camera is difficult to focus on, resulting in slightly lower image quality.
[0004] The second type is a mechanical flipping solution, which currently includes several mechanical structures such as push-rod flipping, robotic arm gripping flipping, and platform flipping with clamping function. The disadvantages of these solutions are: 1. The flipping device is large (especially in the height direction), often protruding from the upper surface of the base, making it impossible to place and photograph other items on the base, or requiring the flipping device to be removed when photographing other items. It is incompatible with photographing items of different sizes and inconvenient to use; 2. The robotic arm gripping, push-rod ejection, and clamping of the document can easily scratch or damage it; 3. Existing mechanical flipping solutions generally suffer from the problem of the ID card easily shifting out of the shooting area after flipping, resulting in poor shooting quality. Summary of the Invention
[0005] The first objective of this invention is to provide an automatic flipping high-speed document scanner that is structurally reliable, captures clear images, does not damage ID cards, and is easy to use.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: An automatic flipping high-speed document scanner includes a base, and two flip plates, two drive mechanisms, and two cameras, all mounted on the base. The two flaps are hinged to each other and rotatably mounted on the base. Each flap has a shooting surface and an ID card placement slot is provided on the shooting surface. The shooting surfaces of the two flaps can be attached or separated. The depth of the ID card placement slot is twice the thickness of the ID card. The two drive mechanisms are respectively used to drive the two flaps to rotate, so as to make one of the flaps flip 180° and make the two flaps stick together and flip 180° synchronously; Each of the flip panels has a shooting state and a flipping state; when the flip panel is in the shooting state, the shooting surface is the upper surface of the flip panel and it is set horizontally; The two cameras are respectively suspended directly above the two flip panels that are in the shooting state.
[0007] Furthermore, the flap includes a supporting part and a rotating part fixed on one side of the supporting part. The supporting part has a rectangular plate structure, and the rotating part has a hollow cylindrical shaft structure. The rotating parts of the two flaps are arranged sequentially and coaxially in the horizontal direction; When both flip panels are in the shooting state, there is a height difference in the thickness of the supporting part on the shooting surface of the two flip panels.
[0008] Furthermore, it also includes an intermediate bearing seat and two end bearing seats disposed on the base, wherein one of the end bearing seats, one of the rotating parts, the intermediate bearing seat, the other rotating part, and the other end bearing seat are arranged sequentially and coaxially; Each of the drive mechanisms includes a motor and a rotating shaft. One of the rotating shafts is sequentially inserted into one of the end bearing seats, one of the rotating parts, and the intermediate bearing seat. The other rotating shaft is sequentially inserted into another end bearing seat, another rotating part, and the intermediate bearing seat. Each rotating shaft is fixedly connected to the corresponding rotating part and hinged to the corresponding bearing seat. The ends of the two rotating shafts that are far apart from each other are respectively connected to the two motors.
[0009] Furthermore, a flanged self-lubricating bushing is inserted into each side of the intermediate bearing seat, and a flanged self-lubricating bushing is inserted into each end bearing seat. Each flanged self-lubricating bushing is fitted onto the corresponding rotating shaft. And / or, the motor is a stepper motor.
[0010] Furthermore, it also includes a first Hall sensor, a second Hall sensor, and a third Hall sensor disposed on the base, wherein: The two flaps are a first flap and a second flap, the edge region of the first flap has a first magnet, and the edge region of the second flap has a second magnet; When the first flip panel is in the shooting state, the first Hall sensor is triggered by the first pole surface of the first magnet; When the first flip panel rotates 180° from the shooting state to the second flip panel, the third Hall sensor is triggered by the second pole of the first magnet; When the second flip panel rotates 180° from the shooting state to the first flip panel, the second Hall sensor is triggered by the second magnet.
[0011] Furthermore, the first flap and the second flap each have a first notch for avoiding the magnet.
[0012] Furthermore, the first flip plate has a light-passing hole at the bottom of the ID card placement slot; The automatic flipping high-speed scanner also includes a photoelectric sensor, the detection light emitted by the photoelectric sensor can pass through the light aperture, and the detection light does not exceed the upper surface of the base.
[0013] Furthermore, the base includes a base plate and a cover that are fastened together. A groove is provided on the upper surface of the cover. All sensors are located at the bottom of the outer side of the groove. A second notch is provided at the bottom of the groove for avoidance during sensor detection. A third notch is provided in the middle of the groove for avoidance of the hinge position of the two flaps. When both flaps are in the shooting state, both flaps are submerged in the groove.
[0014] Furthermore, the upper surface of the base has an A3 shooting area, an A4 shooting area, and a B5 shooting area, wherein: the A3 shooting area, the A4 shooting area, and the ID card placement slot on the first flip plate in the shooting state are arranged in a centered manner from the outside to the inside; the B5 shooting area and the ID card placement slot on the second flip plate in the shooting state are arranged in a centered manner from the outside to the inside; And / or, when both flip panels are in the shooting state, there is a height difference between the upper surface of the first flip panel and the upper surface of the base equal to the thickness of the supporting part, and there is a height difference between the upper surface of the second flip panel and the upper surface of the base equal to twice the thickness of the supporting part, and the outer diameter of the rotating part is three times the thickness of the supporting part; the base also includes a cover plate, which is used to cover the remaining part of the groove after the second flip panel is flipped 180° from the shooting state.
[0015] The second objective of this invention is to provide an automatic shooting method, applied to the automatic flipping high-speed document scanner described in any of the above claims, comprising the following steps: S1: The photoelectric sensor detects whether an ID card is placed on the first flip plate; If so, proceed to step S2; S2: The first Hall sensor detects whether the first flap is in position; If so, proceed to step S3; If not, proceed to step S3'; S3': The first drive mechanism drives the first flap to rotate along the first direction by a set angle, and then returns to step S2; S3: Shot by the first camera; S4: The second drive mechanism drives the second flap to rotate 180° toward the first flap along the first direction, while the second Hall sensor detects whether the second flap is in position; When the second Hall sensor detects that the second flap is in position, the second drive mechanism immediately stops running and proceeds to step S5; If the second drive mechanism has rotated 180°, but the second flap does not detect that the second flap is in position, proceed to step S5'; S5': The second drive mechanism drives the second flap to rotate a set angle along the first direction. Then the second Hall sensor detects whether the second flap is in position. The above process is repeated until the second Hall sensor detects that the second flap is in position. Then step S5 is performed. S5: The two drive mechanisms synchronously drive the two flaps to rotate 180° in the second direction. At the same time, the third Hall sensor detects whether the first flap is in position. The second direction is opposite to the first direction. When the third Hall sensor detects that the first flap is in place, both drive mechanisms immediately stop operating and proceed to step S6; If both drive mechanisms have rotated 180°, but the third Hall sensor does not detect the first flap in place, proceed to step S6'; S6': The two drive mechanisms synchronously drive the two flaps to rotate along the second direction by a set angle. Then the third Hall sensor detects whether the first flap is in position. The above process is repeated until the third Hall sensor detects that the first flap is in position. Then step S6 is performed. S6: The first driving mechanism drives the first flap to rotate 180° along the first direction; The second camera takes a picture after the first flip panel no longer obstructs the view of the second camera.
[0016] The beneficial effects of this invention are: The automatic document scanner provided by this invention includes a base, two flip plates, two drive mechanisms, and two cameras, all mounted on the base. The two flip plates are hinged to each other and rotatably mounted on the base. Each flip plate has a shooting surface with an ID card slot. The shooting surfaces of the two flip plates can be joined or separated. The two drive mechanisms are used to drive the two flip plates to rotate, so as to flip one of the flip plates by 180° and to make the two flip plates join together and flip 180° synchronously. Each flip plate 2 has a shooting state and a flipping state. When the flip plate is in the shooting state, the shooting surface is the upper surface of the flip plate and it is horizontally set. The two cameras are respectively suspended directly above the two flip plates in the shooting state.
[0017] This application does not clamp or push the ID card during the flipping process. The ID card is confined within a slightly larger, nearly enclosed cavity, preventing scratches. The ID card is restrained within its placement slots before, during, and after flipping, ensuring accurate positioning and preventing displacement after flipping. Furthermore, the two flip panels retract into the base when in shooting mode, allowing other items to be placed on the base's upper surface, making it more convenient and applicable to more scenarios.
[0018] The automatic shooting method provided by this invention is applied to the above-mentioned automatic flipping high-speed document scanner. This method truly realizes the automatic shooting process of ID cards, without the need for manual clicking to shoot. The operator only needs to pick up and put down the ID card. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 A three-dimensional schematic diagram of the automatic flipping high-speed document scanner provided in an embodiment of the present invention. Figure 1 ; Figure 2 A three-dimensional schematic diagram of the automatic flipping high-speed document scanner provided in an embodiment of the present invention. Figure 2 ; Figure 3 A schematic diagram showing the positional structure of the flap, driving mechanism, and various sensors provided in an embodiment of the present invention; Figure 4 A three-dimensional schematic diagram of the second flap provided in an embodiment of the present invention; Figure 5This is a schematic diagram showing the connection of the flap, the rotating shaft, and the bearing seat provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the detection principle of the first and third Hall sensors provided in an embodiment of the present invention; Figure 7 A schematic diagram showing the positional structure of the housing, drive mechanism, and various sensors provided in an embodiment of the present invention; Figure 8 A schematic diagram of the assembly structure of the flap with plug-in protrusions and plug-in slots and the drive mechanism provided in an embodiment of the present invention; Figure 9 This is a partial three-dimensional schematic diagram of the automatic flipping high-speed scanner provided in an embodiment of the present invention after the cover plate is installed; Figure 10 This is a partial cross-sectional view of the automatic flipping high-speed scanner provided in an embodiment of the present invention after the cover plate is installed; Figure 11 This is a structural schematic diagram of the automatic flipping high-speed scanner provided in an embodiment of the present invention during the flipping process of the second flip plate; Figure 12 This is a schematic diagram of the automatic flipping high-speed scanner provided in an embodiment of the present invention during the synchronous flipping process of two flippers; Figure 13 This is a structural schematic diagram of the automatic flipping high-speed scanner provided in an embodiment of the present invention during the flipping process of the first flip plate; Figure 14 This is a schematic diagram illustrating the working process of the two flip plates provided in an embodiment of the present invention; Figure 15 A flowchart of an automatic shooting method provided in an embodiment of the present invention.
[0021] icon: 1-Base; 11-Base plate; 12-Cover; 121-Second notch; 122-Third notch; 13-Cover plate; 2-Flip plate; 2a-First flip plate; 2b-Second flip plate; 21-Bearing part; 211-ID card placement slot; 22-Rotating part; 23a-First magnet; 23b-Second magnet; 24-First notch; 25-Insertion protrusion; 26-Insertion slot; 27-Light beam through hole; 3-Drive mechanism; 31-Motor; 32-Rotating shaft; 33-Gear; 4-Camera; 4a-First camera; 4b-Second camera; 5-Intermediate bearing seat; 6-End bearing seat; 71-First Hall sensor; 72-Second Hall sensor; 73-Third Hall sensor; 8-Self-lubricating bushing with flange; 9-Photoelectric sensor; 10-Upright pole. Detailed Implementation
[0022] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] It should be noted that in the description of this invention, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] It should be noted that in the description of this invention, the terms "connection" and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0025] This invention provides an automatic flipping high-speed document scanner, referring to... Figures 1 to 3 The automatic flipping document scanner includes a base 1, two flip plates 2, two drive mechanisms 3, and two cameras 4, all mounted on the base 1. The two flip plates 2 are hinged to each other and rotatably mounted on the base 1. Each flip plate 2 has a shooting surface with an ID card slot 211. The shooting surfaces of the two flip plates 2 can be joined or separated. The two drive mechanisms 3 are used to drive the two flip plates 2 to rotate, so as to flip one of the flip plates 2 by 180° and to make the two flip plates 2 join together and flip 180° synchronously. Each flip plate 2 has a shooting state and a flipping state. When the flip plate 2 is in the shooting state, the shooting surface is the upper surface of the flip plate 2 and it is horizontally set. The two cameras 4 are respectively suspended directly above the two flip plates 2 in the shooting state.
[0026] The automatic flipping document scanner also includes a pole 10, the bottom of which is fixed to a base 1, and a camera protective housing is installed on its top. Both cameras 4 are mounted on the camera protective housing. The internal structure of the camera protective housing is basically the same as that of existing technology and will not be described in detail here.
[0027] For ease of description, the two flip panels 2 are referred to as the first flip panel 2a and the second flip panel 2b, and the two cameras 4 are referred to as the first camera 4a and the second camera 4b. The first camera 4a is suspended directly above the first flip panel 2a when it is in shooting mode, and the second camera 4b is suspended directly above the second flip panel 2b when it is in shooting mode.
[0028] The operating principle of this automatic flip-type document scanner when photographing ID cards is as follows: In the initial state, both flip plates are in the shooting state; the ID card (usually with the front facing up) is placed in the ID card placement slot 211 on the first flip plate 2a, the automatic ID card shooting mode is found on the display interface of the host computer and the shooting mode is clicked, and then the document scanner starts the automatic shooting process; first, the first camera 4a acquires a front photo of the ID card; then, the second flip plate 2b is flipped 180° towards the first flip plate 2a under the drive of the corresponding drive mechanism 3 (this direction is called the first direction), the shooting surfaces of the two flip plates 2 are in contact, and the ID card placement slots 211 on the two flip plates 2 are... The two flip plates 211 are interlocked, with the depth of the ID card placement slot 211 being slightly greater than the thickness of the ID card. Subsequently, the two flip plates 2 are simultaneously rotated 180° in the second direction (i.e., the opposite of the first direction) under the drive of the two drive mechanisms 3, at which point the ID card is rotated 180°. Then, the first flip plate 2a is rotated 180° away from the second flip plate 2b (the first direction) under the drive of the corresponding drive mechanism 3. After the first flip plate 2a no longer obstructs the view of the second camera 4b, the second camera 4b acquires a photo of the back of the ID card. Finally, the host computer automatically performs orientation recognition, rotation, cropping, and compositing on the two photos to complete one shooting process.
[0029] Compared to existing mechanical flipping solutions, this application does not clamp or push the ID card during the flipping process. The ID card is confined within a slightly larger, nearly enclosed cavity, preventing scratches. The ID card is confined within the ID card placement slot 211 before, during, and after flipping, ensuring accurate positioning and preventing displacement after flipping. Furthermore, by… Figure 1 As can be seen directly, the two flip panels 2 sink into the base 1 when in shooting mode, which does not affect the placement of other items on the upper surface of the base 1, making it more convenient to use and applicable to more scenarios.
[0030] Furthermore, the depth of the ID card placement slot 211 is twice the depth of the ID card thickness by 0.5mm to 3mm. When the two ID card placement slots 211 are fastened together, the thickness of the enclosed cavity is slightly greater than the thickness of the ID card to prevent the ID card from being subjected to clamping force.
[0031] Continue to refer to Figure 2The upper surface of the base 1 has shooting areas A3, A4, and B5. Shooting areas A3 and A4, as well as the ID card placement slot 211 on the first flip plate 2a in shooting mode, are aligned sequentially from the outside in. Shooting area B5, as well as the ID card placement slot 211 on the second flip plate 2b in shooting mode, are also aligned sequentially from the outside in. The maximum shooting range of the first camera 4a is A3, used to shoot larger pieces of paper and the front of the ID card. The maximum shooting range of the second camera 4b is B5, used to shoot smaller pieces of paper and the back of the ID card. Because the back of the ID card is more difficult to recognize than the front, the shooting functions of the two cameras 4 are subdivided, with the shooting ranges of the two cameras 4 set separately for different paper sizes to improve recognition accuracy.
[0032] Reference Figures 4 to 6 The flip panel 2 includes a supporting part 21 and a rotating part 22 fixed to one side of the supporting part 21. The supporting part 21 has a rectangular plate structure and is provided with an ID card placement slot 211. The rotating part 22 has a hollow cylindrical shaft structure. The rotating parts 22 of the two flip panels 2 are arranged sequentially and coaxially in the horizontal direction. When both flip panels 2 are in the shooting state, there is a height difference of the thickness of the supporting part 21 between the shooting surfaces of the two flip panels 2 so that the shooting surfaces of the two flip panels can fit together. The structures of the two flip panels 2 are similar. The rotating part 22 of one flip panel 2 is fixed to the front part of one side of the supporting part 21, while the rotating part 22 of the other flip panel 2 is fixed to the rear part of one side of the supporting part 21.
[0033] Furthermore, referring to Figure 5 The automatic flipping high-speed camera also includes an intermediate bearing seat 5 and two end bearing seats 6 disposed on the base 1. One end bearing seat 6, one rotating part 22, intermediate bearing seat 5, another rotating part 22 and another end bearing seat 6 are arranged sequentially and coaxially. Each drive mechanism 3 includes a motor 31 and a rotating shaft 32. One rotating shaft 32 is inserted into one end bearing seat 6, one rotating part 22 and intermediate bearing seat 5 in sequence. The other rotating shaft 32 is inserted into another end bearing seat 6, another rotating part 22 and intermediate bearing seat 5 in sequence. Each rotating shaft 32 is fixedly connected to the corresponding rotating part 22 and hinged to the corresponding bearing seat. The ends of the two rotating shafts 32 that are far apart from each other are respectively connected to the two motors 31.
[0034] Specifically, the inner cross-section of the rotating part 22 is non-circular, and the outer contour of the cross-section of the rotating shaft 32 is adapted to the inner hole of the rotating part 22. Thus, the rotating shaft 32 drives the corresponding flip plate 2 to rotate synchronously during rotation. A self-lubricating bushing 8 with a flange is inserted into each side of the intermediate bearing seat 5, and a self-lubricating bushing 8 with a flange is inserted into each end bearing seat 6. Each self-lubricating bushing 8 with a flange is fitted onto the corresponding rotating shaft 32. The self-lubricating bushing 8 with a flange makes the two flip plates 2 rotate more smoothly. Each drive mechanism 3 also includes two meshing gears 33. A gear 33 is fixedly fitted onto the output shaft of the motor 31 and the end of the rotating shaft 32, and power is transmitted through the gears 33. The motor 31 is a stepper motor, which is less expensive than a servo motor and can also precisely control the flip plate 2 to rotate ±180° by controlling electrical pulses. Of course, the motor 31 can also be a servo motor.
[0035] Continue to refer to Figure 3 The automatic flipping high-speed document scanner also includes a first Hall sensor 71, a second Hall sensor 72, and a third Hall sensor 73 disposed on the base 1. The edge region of the first flip plate 2a has a first magnet 23a, and the edge region of the second flip plate 2b has a second magnet 23b. When the first flip plate 2a is in the shooting state, the first Hall sensor 71 can be triggered by the first pole surface of the first magnet 23a. When the first flip plate 2a rotates 180° from the shooting state to the second flip plate 2b, the third Hall sensor 73 can be triggered by the second pole surface of the first magnet 23a. When the second flip plate 2b rotates 180° from the shooting state to the first flip plate 2a, the second Hall sensor 72 can be triggered by the second magnet 23b. The magnets can be fixed to the corresponding flip plates 2 by adhesive bonding or injection molding.
[0036] Reference Figure 6 The working principle of the first and third Hall sensors is as follows: The first and third Hall sensors are arranged opposite each other on the radial sides of the rotating shaft 32. When the first flip plate 2a is in the shooting state, the first pole surface (e.g., the S pole) of the first magnet 23a faces the detection surface of the first Hall sensor 71. At this time, the first Hall sensor 71 can be triggered by the first pole surface of the first magnet 23a. When the first flip plate 2a is rotated 180° from the shooting state, the second pole surface (e.g., the N pole) of the first magnet 23a faces the detection surface of the third Hall sensor 73. At this time, the third Hall sensor 73 can be triggered by the first pole surface of the first magnet 23a. The principle of the second Hall sensor 72 is similar to that described above. When the second flip plate 2b is rotated 180° from the shooting state (at this time, the two flip plates 2 are in contact), one pole surface (S pole or N pole) of the second magnet 23b faces the detection surface of the second Hall sensor 72. At this time, the second Hall sensor 72 can be triggered by the second magnet 23b.
[0037] The positions of the two flip plates 2 are accurately detected by three Hall sensors, and the flip plates 2 can be positioned more precisely by working with a stepper motor.
[0038] To avoid obstructing sensor detection, the first flap 2a and the second flap 2b each have a first notch 24 for avoiding magnets. Both ends of the first magnet 23a extend a certain length from the support portion 21 of the first flap 2a; when the two flaps 2b are joined, the first magnet 23a is inserted into the first notch 24 on the second flap 2b. One end of the second magnet 23b closest to the imaging surface extends a certain length from the support portion 21 of the second flap 2b, while the other end may or may not extend through the support portion, but is preferably not; when the two flaps 2b are joined, the second magnet 23b is inserted into the first notch 24 on the first flap 2a.
[0039] Furthermore, the first flip plate 2a has a light through hole 27 at the bottom of the ID card placement slot 211; the automatic flipping high-speed scanner also includes a photoelectric sensor 9, the detection light emitted by the photoelectric sensor 9 can pass through the light through hole 27, and the detection light does not exceed the upper surface of the base 1.
[0040] Specifically, refer to Figure 7 The base 1 includes a base plate 11 and a cover 12 that are fastened together. A groove is provided on the upper surface of the cover 12. All sensors are located at the bottom outer side of the groove. A second notch 121 is provided at the bottom of the groove to allow for sensor detection, and a third notch 122 is provided in the middle of the groove to allow for the hinge position of the two flip plates 2. When both flip plates 2 are in the shooting state, both flip plates 2 are submerged in the groove. At this time, the detection light emitted by the photoelectric sensor 9 can pass through the light through-hole 27 into the ID card placement slot 211 of the first flip plate 2a, but the detection light will not exceed the opening of the groove. With this configuration, the photoelectric sensor 9 can only be triggered after the ID card is placed in the ID card placement slot 211 of the first flip plate 2a, preventing accidental activation of the photoelectric sensor 9.
[0041] Reference Figure 8Optionally, one or two corner areas of the first flip plate 2a have insertion protrusions 25, and the second flip plate 2b has insertion slots 26 for the insertion protrusions 25 to be inserted. Alternatively, one or two corner areas of the second flip plate 2b may have insertion protrusions 25, and the first flip plate 2a may have insertion slots 26. After the upper surfaces of the two flip plates 2 are attached, the insertion protrusions 25 are inserted into the insertion slots 26; thus, when there is a slight relative delay during the synchronous start-up of the two motors 31, the insertion protrusions 25 can be positioned horizontally in the gap between the two flip plates 2, preventing thin ID cards from getting stuck in the gap between the two flip plates 2. The first and second magnets and the corresponding first notch 24 also function as insertion protrusions 25 and insertion slots 26. After the two flip plates 2 are combined, at least three corners intersect each other, which can completely prevent the ID card from getting stuck in the gap due to motor delay during the flipping process.
[0042] Optionally, a notch (not shown in the figure) is provided on one side wall of the ID card placement slot 211 to facilitate the retrieval of the ID card.
[0043] Optionally, the bottom of the ID card placement slot 211 on the first flip plate 2a is provided with text prompts, such as "Please place the ID card face up into this slot" to facilitate the operator's use.
[0044] With both flip panels 2 in the shooting state, there is a height difference equal to the thickness of the supporting portion 21 between the upper surface of the first flip panel 2a and the upper surface of the base 1, and a height difference equal to twice the thickness of the supporting portion 21 between the upper surface of the second flip panel 2b and the upper surface of the base 1; the outer diameter of the rotating portion 22 is three times the thickness of the supporting portion 21. (Combined) Figure 9 The above setting is to ensure that after the second flip plate 2b is flipped 180° from the shooting state, the upper surface of the second flip plate 2b is flush with the upper surface of the base 1 at this time.
[0045] In some embodiments, the base 1 further includes a cover plate 13, with buckles on both sides of the cover plate 13 and corresponding slots on the sidewalls of the groove on the cover 12; when the ID card shooting function is not used, or when the second camera 4b needs to be used to shoot smaller items, or during transportation, the second flip plate 2b can be flipped 180° from the shooting state and fastened to the first flip plate 2a, and then the cover plate 13 can be sealed to the notch of the groove, so that the upper surface of the base 1 is a roughly complete plane.
[0046] Continue to refer to Figure 9 and Figure 10In some embodiments, the cover plate 13 can also be configured as a pull-out type, with its front and rear edges slidingly disposed on the inner walls of the two sides of the groove. The inner walls of the front and rear sides of the groove are respectively provided with corresponding horizontal grooves, and the inner wall of the right side of the groove (the inner wall away from the first flap 2a) is provided with a notch to avoid the cover plate 13. The left edge of the cover plate 13 is provided with a flange extending upwards to be flush with the upper surface of the cover 12, so as to facilitate manual pulling out or pushing back. By pushing and pulling the cover plate 13 left and right, it can be pulled out or pushed back. This pull-out structure cannot make the upper surface of the cover plate 13 completely flush with the upper surface of the cover 12 (there is a height difference of about one plastic sheet thickness, about 2-3 mm), but it is more convenient to use, and this height difference does not affect the placement of paper.
[0047] Optionally, the cover 13 can be pulled out manually or electrically. Figure 10 As shown, the document scanner also includes an electric push rod for pushing the cover plate 13 to slide left and right. The cylinder of the electric push rod is installed in the gap between the intermediate bearing seat 5 and one of the end bearing seats 6, and its piston rod end is connected to the side of the cover plate 13 away from the flip plate 2. After clicking to exit the automatic ID card shooting mode in the matching software function interface, the second flip plate 2b and the cover plate 13 automatically seal the slot under the drive of the corresponding motor; conversely, after clicking to start the automatic ID card shooting mode in the software function interface, the cover plate 13 retracts to the right under the drive of the electric push rod, and then the second flip plate 2b rotates 180° under the drive of the corresponding motor 31.
[0048] Based on the above structure, the upper surface of the cover plate 13 can be printed with an ID card placement area marking, allowing the operator to easily take the photo using the traditional manual flipping method after exiting the automatic ID card shooting mode. The surfaces of the flip plate 2, the cover 12, and the cover plate 13 are all black to improve the shooting effect.
[0049] It should be noted that the cover plate 13 is not required for shooting B5 and larger format items. The cover plate 13 can be used or not when shooting such items.
[0050] In summary, traditional ID card flipping methods all employ clamping techniques, either clamping from both sides along the length / width direction or from both sides along the thickness direction of the ID card. This application, however, uses two flip plates 2 to form a closed, flippable cavity slightly larger than the ID card to flip it. The ID card is not subjected to clamping force during flipping, thus avoiding the risks of injury from excessive clamping force or easy displacement or drop due to appropriate or insufficient clamping force. At least three corners of this cavity form an interlocking structure. This interlocking structure avoids the problem of the ID card getting stuck in the gaps due to relative delays between the two motors, and also forms a bidirectional detection system of magnets and Hall sensors, ensuring the positional accuracy of the ID card before and after flipping, while minimizing the risk of accidental activation of the Hall switches. This flipping device can be fully embedded into the base 1 of the document scanner, without affecting the scanning of other paper sizes, solving the common problem of incompatibility with other items in existing document scanners with automatic flipping functions. Furthermore, when not automatically photographing ID cards, the slots on the cover 12 can be sealed using the flip plate 2 and the cover plate 13. This not only seals the detection holes to protect the internal sensors but also makes the upper surface of the base 1 more flat, which is beneficial for photographing smaller items. The overall structure of this document scanner is simple, reliable, and ingeniously designed, making full use of the functions of each component and avoiding the stacking of too many parts while improving functionality.
[0051] This application also provides an automatic shooting method applied to the above-mentioned document scanner, referring to... Figures 11 to 15 The method includes the following steps: S1: Photoelectric sensor 9 detects whether an ID card is placed on the first flip plate 2a; If so, proceed to step S2 after a preset delay (e.g., 3s); the purpose of the delay is to avoid accidental touch and to give the operator time to remove their hand. If the photoelectric sensor 9 returns to the state of not detecting an item within the delay range, the subsequent steps are stopped and the detection is repeated. If not, continue testing; S2: The first Hall sensor 71 detects whether the first flap 2a is in position; If so, proceed to step S3; If not, proceed to step S3'; S3': The first motor drives the first flap 2a to rotate along the first direction by a set angle, and then returns to step S2; this step is a supplementary loop step, where the controller sends a small number of pulses each time to control the corresponding motor to rotate a small angle (e.g., 1°) until the first Hall sensor 71 detects that the first flap 2a is in place. S3: Shot by the first camera 4a; S4: The second motor drives the second flap 2b to rotate 180° toward the first flap 2a in the first direction. At the same time, the second Hall sensor 72 detects whether the second flap 2b is in position. When the second Hall sensor 72 detects that the second flap 2b is in position, the second motor immediately stops running and proceeds to step S5; If the second motor has rotated 180°, but the second flap 2b has not been detected to be in position, proceed to step S5'. S5': The second motor drives the second flap 2b to rotate a set angle along the first direction. Then the second Hall sensor 72 detects whether the second flap 2b is in position. The above process is repeated until the second Hall sensor 72 detects that the second flap 2b is in position. Then step S5 is performed. In other words, as long as the second Hall sensor 72 detects that the second flap 2b is in place, the second motor will stop running even if the second motor has not completed the preset number of steps (corresponding to 180°); if the second motor has completed the preset number of steps (corresponding to 180°), but the second Hall sensor 72 does not detect the second flap 2b, the second motor will enter the supplementary walking cycle mode until the second Hall sensor 72 detects that the second flap 2b is in place. S5: Two motors 31 synchronously drive two flaps 2 to rotate 180° in the second direction. At the same time, the third Hall sensor 73 detects whether the first flap 2a is in position. The second direction is opposite to the first direction. When the third Hall sensor 73 detects that the first flap 2a is in place, the two motors 31 immediately stop running and proceed to step S6; If the two motors 31 have rotated 180°, but the third Hall sensor 73 has not detected the first flap 2a in place, proceed to step S6'. S6': The two motors 31 synchronously drive the two flaps 2 to rotate along the second direction by a set angle. Then the third Hall sensor 73 detects whether the first flap 2a is in position. Repeat the above process until the third Hall sensor 73 detects that the first flap 2a is in position, and then proceed to step S6. In other words, as long as the third Hall sensor 73 detects that the first flap 2a is in place, the two motors will stop running; if the two motors have completed the preset number of steps (corresponding to 180°), but the third Hall sensor 73 does not detect the first flap 2a, the two motors will enter the supplementary walking cycle mode until the third Hall sensor 73 detects that the first flap 2a is in place. S6: After the third Hall sensor 73 is triggered, the first motor drives the first flip plate 2a to rotate 180° in the first direction after a certain delay (e.g., 0.1s). The purpose of the delay is to make the ID card completely stable. The second camera 4b takes a picture after the first flip panel 2a no longer obstructs the view of the second camera 4b (after rotating at least 90°).
[0052] Using the above-described automatic detection method, after the operator activates the ID card self-check and self-photograph function on the host computer's display interface, the document scanner will automatically take a photo according to this method. No manual clicking is required; the operator only needs to place the ID card in and out, truly achieving automatic photo-taking. Voice and / or text prompts reminding the operator that the photo-taking is complete can also be added to the document scanner's accompanying software to improve ease of use. This method is particularly suitable for batch data entry, frequent data entry throughout the day, and unattended data entry (such as self-service photocopying).
[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An automatic flipping high-speed document scanner, characterized in that, Includes a base (1), and two flip plates (2), two drive mechanisms (3) and two cameras (4) all mounted on the base (1); The two flaps (2) are hinged to each other and rotatably mounted on the base (1). Each flap (2) has a shooting surface. An ID card placement slot (211) is provided on the shooting surface. The shooting surfaces of the two flaps (2) can be attached or separated. The depth of the ID card placement slot (211) is twice the thickness of the ID card. The two drive mechanisms (3) are respectively used to drive the two flaps (2) to rotate, so as to make one of the flaps (2) flip 180° and make the two flaps (2) stick together and flip 180° synchronously; Each of the flip-boards (2) has a shooting state and a flipping state; when the flip-board (2) is in the shooting state, the shooting surface is the upper surface of the flip-board (2) and it is set horizontally; The two cameras (4) are respectively suspended directly above the two flip panels (2) in the shooting state.
2. The automatic flipping high-speed scanner according to claim 1, characterized in that, The flap (2) includes a supporting part (21) and a rotating part (22) fixed on one side of the supporting part (21). The supporting part (21) has a rectangular plate structure, and the rotating part (22) has a hollow cylindrical shaft structure. The rotating parts (22) of the two flaps (2) are arranged sequentially and coaxially in the horizontal direction; When both flip plates (2) are in the shooting state, there is a height difference in the thickness of the bearing part (21) on the shooting surface of the two flip plates (2).
3. The automatic flipping high-speed scanner according to claim 2, characterized in that, It also includes an intermediate bearing seat (5) and two end bearing seats (6) disposed on the base (1), wherein one of the end bearing seats (6), one of the rotating parts (22), the intermediate bearing seat (5), the other rotating part (22) and the other end bearing seat (6) are arranged sequentially and coaxially; The drive mechanism (3) includes a motor (31) and two rotating shafts (32). One of the rotating shafts (32) is inserted into one of the end bearing seats (6), one of the rotating parts (22) and the intermediate bearing seat (5) in sequence. The other rotating shaft (32) is inserted into another end bearing seat (6), another rotating part (22) and the intermediate bearing seat (5) in sequence. Each rotating shaft (32) is fixedly connected to the corresponding rotating part (22) and hinged to the corresponding bearing seat. The ends of the two rotating shafts (32) that are far apart from each other are respectively connected to the two motors (31).
4. The automatic flipping high-speed scanner according to claim 3, characterized in that, A flanged self-lubricating bushing (8) is inserted into each side of the intermediate bearing seat (5), and a flanged self-lubricating bushing (8) is inserted into each end bearing seat (6). Each flanged self-lubricating bushing (8) is fitted onto the corresponding rotating shaft (32). And / or, the motor (31) is a stepper motor.
5. The automatic flipping high-speed scanner according to claim 2, characterized in that, It also includes a first Hall sensor (71), a second Hall sensor (72), and a third Hall sensor (73) disposed on the base (1), wherein: The two flaps (2) are a first flap (2a) and a second flap (2b), respectively. The edge region of the first flap (2a) has a first magnet (23a), and the edge region of the second flap (2b) has a second magnet (23b). When the first flap (2a) is in the shooting state, the first Hall sensor (71) can be triggered by the first pole surface of the first magnet (23a); When the first flip plate (2a) rotates 180° from the shooting state to the second flip plate (2b), the third Hall sensor (73) can be triggered by the second pole surface of the first magnet (23a); When the second flip panel (2b) rotates 180° from the shooting state to the first flip panel (2a), the second Hall sensor (72) can be triggered by the second magnet (23b).
6. The automatic flipping high-speed scanner according to claim 5, characterized in that, The first flap (2a) and the second flap (2b) each have a first notch (24) for avoiding the magnet.
7. The automatic flipping high-speed scanner according to claim 5, characterized in that, The first flip plate (2a) has a light through hole (27) at the bottom of the ID card placement slot (211). The automatic flipping high-speed camera also includes a photoelectric sensor (9), the detection light emitted by the photoelectric sensor (9) can pass through the light through hole (27), and the detection light does not exceed the upper surface of the base (1).
8. The automatic flipping high-speed scanner according to claim 7, characterized in that, The base (1) includes a base plate (11) and a cover (12) that are fastened together. A groove is provided on the upper surface of the cover (12). All sensors are located at the bottom of the outer side of the groove. A second notch (121) is provided at the bottom of the groove for avoiding the sensor during detection. A third notch (122) is provided in the middle of the groove for avoiding the hinge position of the two flaps (2). When both flaps (2) are in the shooting state, both flaps (2) are submerged in the groove.
9. The automatic flipping high-speed document scanner according to claim 8, characterized in that, The upper surface of the base (1) has an A3 shooting area, an A4 shooting area, and a B5 shooting area, wherein: the A3 shooting area, the A4 shooting area, and the ID card placement slot (211) on the first flip plate (2a) in the shooting state are arranged in a centered manner from the outside to the inside; the B5 shooting area and the ID card placement slot (211) on the second flip plate (2b) in the shooting state are arranged in a centered manner from the outside to the inside; And / or, when both of the flip plates (2) are in the shooting state, there is a height difference between the upper surface of the first flip plate (2a) and the upper surface of the base (1) equal to the thickness of the support portion (21), and there is a height difference between the upper surface of the second flip plate (2b) and the upper surface of the base (1) equal to twice the thickness of the support portion (21), and the outer diameter of the rotating part (22) is three times the thickness of the support portion (21); the base (1) also includes a cover plate (13), which is used to cover the remaining part of the groove after the second flip plate (2b) is flipped 180° from the shooting state.
10. An automatic shooting method, characterized in that, The automatic flipping high-speed document scanner as described in any one of claims 7 to 9 comprises the following steps: S1: The photoelectric sensor (9) detects whether an ID card is placed on the first flip plate (2a); If so, proceed to step S2; S2: The first Hall sensor (71) detects whether the first flap (2a) is in position; If so, proceed to step S3; If not, proceed to step S3'; S3': The first drive mechanism drives the first flap (2a) to rotate by a set angle along the first direction, and then returns to step S2; S3: Shot by the first camera (4a); S4: The second drive mechanism drives the second flap (2b) to rotate 180° toward the first flap (2a) in the first direction. At the same time, the second Hall sensor (72) detects whether the second flap (2b) is in position. When the second Hall sensor (72) detects that the second flap (2b) is in place, the second drive mechanism immediately stops running and proceeds to step S5; If the second drive mechanism has rotated 180°, but the second flap (2b) does not detect that the second flap (2b) is in place, proceed to step S5'; S5': The second drive mechanism drives the second flap (2b) to rotate a set angle along the first direction. Then the second Hall sensor (72) detects whether the second flap (2b) is in place. The above process is repeated until the second Hall sensor (72) detects that the second flap (2b) is in place. Then step S5 is performed. S5: The two drive mechanisms (3) synchronously drive the two flaps (2) to rotate 180° in the second direction. At the same time, the third Hall sensor (73) detects whether the first flap (2a) is in position. The second direction is opposite to the first direction. When the third Hall sensor (73) detects that the first flap (2a) is in place, the two drive mechanisms (3) immediately stop running and proceed to step S6; If the two drive mechanisms (3) have rotated 180°, but the third Hall sensor (73) does not detect that the first flap (2a) is in place, proceed to step S6'; S6': The two drive mechanisms (3) synchronously drive the two flaps (2) to rotate a set angle along the second direction. Then the third Hall sensor (73) detects whether the first flap (2a) is in place. The above process is repeated until the third Hall sensor (73) detects that the first flap (2a) is in place. Then step S6 is performed. S6: The first driving mechanism drives the first flap (2a) to rotate 180° along the first direction; The second camera (4b) takes a picture after the first flip panel (2a) no longer obstructs the view of the second camera (4b).