A double-sided synchronous scanning device and a synchronous double-sided scanner

Abstract

The present invention discloses a double-sided synchronous scanning device, wherein a scanning channel is formed between two scanning components, two backlight plates are respectively used to provide backlight for the scanning components on the opposite side and are fixed to the scanning components on the same side, a light guide groove corresponding to the light inlet of the corresponding scanning component is provided on the side of the backlight plate facing the scanning channel, and a backlight light source is arranged in the light guide groove; when the two scanning components are working synchronously, since the backlight plate always needs to provide backlight for the opposite scanning component, the reflected light generated by the backlight plate on the scanned sample will enter the light inlet of the scanning component on the same side, affecting the image scanning effect, therefore, by arranging the light guide groove on the backlight plate, the emergent light of the backlight light source is limited to the area facing the light inlet of the opposite scanning component through the light guide groove, thereby avoiding the interference of the scattered light overflowed from the side of the backlight plate on the scanning component on the same side, thereby realizing synchronous high-quality scanning of the two scanning components.

Description

Technical Field

[0001] The present invention relates to the technical field of double-sided synchronous scanning devices, and in particular to a double-sided synchronous scanning device and a synchronous double-sided scanner. Background Art

[0002] At present, when a double-sided scanner performs double-sided image scanning on a sample, the scanning head is usually moved along a preset path to complete the scanning work during the movement. In order to ensure the scanning effect, a backlight plate is usually set on the opposite side for each scanner. However, when the scanners on both sides move synchronously, since the backlight plate is fixed as the background, on the one hand, the foreground scanning head interferes with the backlight effect, and on the other hand, since the backlight plate is far away from the opposite side scanning head, the brightness of the light source is insufficient, and when the scanning head moves relative to the backlight plate to scan, the image backlight is uneven. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention provides a double-sided synchronous scanning device and a synchronous double-sided scanner.

[0004] A double-sided synchronous scanning device proposed by the present invention comprises: two scanning components and two backlight plates;

[0005] A scanning channel is formed between the two scanning components. The two scanning components are staggered. Two backlight panels are respectively located on both sides of the scanning channel and fixed to the scanning components on the same side. The two scanning components are staggered along the moving direction. Each backlight panel is used to provide backlight for the relative scanning component.

[0006] Preferably, a scanning component is provided with a light inlet on a side facing the scanning channel, a backlight plate is provided with a light guide groove corresponding to the light inlet of the corresponding scanning component on a side facing the scanning channel, and a light source is provided in the light guide groove.

[0007] Preferably, a reflector is further provided in the light-guiding groove, and an arc-shaped reflective surface arranged toward the light inlet is provided on the reflector, and the light source is arranged toward the arc-shaped reflective surface.

[0008] Preferably, the arc-shaped reflecting surface is located at one side of the reflecting element, and the light source is located at a side of the reflecting element close to the arc-shaped reflecting surface and is installed on a side wall of the light guiding groove.

[0009] Preferably, a baffle extending horizontally from one side wall is provided at the opening of the light guide groove, and the baffle is located below the light source.

[0010] Preferably, the scanning component is also provided with a fill light arranged toward the backlight panel.

[0011] Preferably, two supplementary light lamps are provided on the scanning assembly. The two supplementary light lamps are respectively located on both sides of the light inlet and are arranged in sequence along the direction away from the adjacent backlight panel.

[0012] Preferably, the supplementary light lamps are arranged obliquely, and the distance between the two supplementary light lamps gradually decreases in the direction away from the opposite backlight panel.

[0013] In the present invention, for the proposed double-sided synchronous scanning device, a scanning channel is formed between the two scanning assemblies. The two backlight panels are respectively used to provide backlight for the scanning assembly on the opposite side and are fixed to the scanning assembly on the same side. A light guide groove corresponding to the light inlet of the corresponding scanning assembly is provided on the side of the backlight panel facing the scanning channel, and the backlight light source is arranged in the light guide groove. When the two scanning assemblies work synchronously, since the backlight panel always needs to provide backlight for the scanning assembly on the opposite side, and the reflected light generated by the backlight panel on the scanned sample will enter the light inlet of the scanning assembly on the same side, affecting the image scanning effect. Therefore, by providing a light guide groove on the backlight panel, the outgoing light of the backlight light source is restricted to the area facing the light inlet of the scanning assembly on the opposite side through the light guide groove, thereby avoiding the interference of the scattered light overflowing laterally from the backlight panel to the scanning assembly on the same side, and further enabling the two scanning assemblies to perform high-quality synchronous scanning.

[0014] The present invention also proposes a synchronous double-sided scanner, including the above-mentioned double-sided synchronous scanning device.

[0015] Preferably, it includes an upper scanning assembly, an upper backlight panel, a lower scanning assembly, a lower backlight panel, a housing and a driving mechanism;

[0016] An upper slide rail and a lower slide rail are arranged in parallel in the housing. The upper scanning assembly and the lower scanning assembly are respectively slidably installed on the upper slide rail and the lower slide rail. The driving mechanism is used to drive the upper scanning assembly and the lower scanning assembly to slide synchronously. The upper backlight panel is fixed to the upper scanning assembly, and the lower backlight panel is fixed to the lower scanning assembly.

[0017] Preferably, it further includes a loading tray that can be placed in the scanning channel, and a transparent loading area is provided in the middle of the loading tray;

[0018] Preferably, upper calibration parts and lower calibration parts for calibrating the upper scanning assembly and the lower scanning assembly respectively are provided on the upper and lower sides of the loading tray, and the upper calibration parts and the lower calibration parts are located on the same side of the transparent loading area along the extending direction of the upper slide rail.

[0019] In the present invention, for the proposed synchronous double-sided scanner, its technical effects are similar to those of the above-mentioned double-sided synchronous scanning device, so they will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a double-sided synchronous scanning device proposed by the present invention.

[0021] Figure 2 Schematic structural diagram of a backlight panel of an embodiment of a double-sided synchronous scanning device proposed by the present invention.

[0022] Figure 3 Schematic structural diagram of another embodiment of a backlight panel of a double-sided synchronous scanning device proposed by the present invention.

[0023] Figure 4 Schematic structural diagram of a supplementary light lamp of a double-sided synchronous scanning device proposed by the present invention.

[0024] Figure 5 Schematic installation structure diagram of a synchronous double-sided scanner proposed by the present invention.

[0025] Figure 6 Schematic overall structure diagram of a synchronous double-sided scanner proposed by the present invention.

[0026] Explanation of reference numerals in the drawings:

[0027] 1. Scanning assembly; 2. Backlight panel; 3. Supplementary light lamp; 9. Balance calibration bar; 10. Housing; 11. Light inlet; 20. Upper scanning assembly; 21. Light guide groove; 22. Light source; 23. Reflective member; 24. Baffle; 30. Lower scanning assembly; 40. Upper backlight panel; 50. Lower backlight panel; 60. Carrying tray; 101. Upper slide rail; 102. Lower slide rail. Detailed implementation manners

[0028] As Figures 1 to 6 shown, Figure 1 Schematic structural diagram of a double-sided synchronous scanning device proposed by the present invention, Figure 2 Schematic structural diagram of an embodiment of a backlight panel of a double-sided synchronous scanning device proposed by the present invention, Figure 3 Schematic structural diagram of another embodiment of a backlight panel of a double-sided synchronous scanning device proposed by the present invention, Figure 4 Schematic structural diagram of a supplementary light lamp of a double-sided synchronous scanning device proposed by the present invention, Figure 5 Schematic installation structure diagram of a synchronous double-sided scanner proposed by the present invention, Figure 6 Schematic overall structure diagram of a synchronous double-sided scanner proposed by the present invention.

[0029] In the field of grain particle detection, it is necessary to obtain scanning images of the upper and lower surfaces of grain particles, and the grain particles to be scanned are placed between the upper and lower scanning assemblies. Due to the detection requirements, a corresponding backlight panel is usually set for each scanning assembly. On the one hand, it ensures that the background of the scanned image is unified, reducing the algorithm difficulty of subsequent image processing. On the other hand, the backlight panel fills light from the back of the scanning area to improve the scanning image effect.

[0030] Reference Figure 1 and 2 , a double-sided synchronous scanning device proposed by the present invention comprises two scanning components 1 and two backlight panels 2;

[0031] A scanning channel is formed between the two scanning components 1. The two scanning components 1 are staggered. Two backlight panels 2 are respectively located on both sides of the scanning channel and fixed to the scanning component 1 on the same side. Each backlight panel 2 is used to provide backlight for the scanning component 1 on the opposite side.

[0032] In the specific working process of the double-sided synchronous scanning device of this embodiment, first, the sample to be scanned is placed in the channel to be scanned, and the two backlight plates 2 are respectively located on the side of the sample to be scanned away from the corresponding scanning component 1, serving as a back of one side of the scanning area, and a scanning area is formed between each scanning component 1 and the corresponding backlight plate 2. During scanning, in order to reduce the setting of the driving mechanism and improve the scanning efficiency, the two scanning components 1 and the corresponding backlight plate 2 can be moved synchronously, so that the two scanning areas pass through the sample surface in turn, thereby obtaining two upper and lower scanning images.

[0033] Furthermore, in the process of driving the upper and lower scanning components to move synchronously, the upper and lower scanning components and the corresponding backlight plates move synchronously. While the backlight plate provides backlight for the relative scanning component, the light it emits is reflected by the grain particles, which will affect the image obtained by the scanning component on the same side, resulting in an inconsistent background of the scanned image, which in turn affects the scanning quality and increases the difficulty of algorithm processing. Therefore, in actual use, the image obtained by synchronous scanning during the synchronous movement of the upper and lower scanning components brings great difficulties to subsequent image processing.

[0034] In order to solve the above problem, in a specific design, the scanning component 1 is provided with a light inlet 11 on the side facing the scanning channel, and the backlight panel 2 is provided with a light guide groove 21 corresponding to the light inlet 11 of the corresponding scanning component 1 on the side facing the scanning channel, and a light source 22 is provided in the light guide groove 21.

[0035] During the scanning process, since the backlight light source 22 is located in the light guide groove 21, the edge of the light guide groove 21 blocks the scattered light around the light emitted by the light source 22, so that the light beam emitted from the light guide groove 21 is focused on the light inlet 11 of the scanning component 1. In the process of the two groups of backlight panels 2 moving synchronously with the scanning component 1 for scanning, the interference of scattered light on the scanning component 1 on the same side is avoided, thereby improving the scanning efficiency and ensuring the quality of the scanned image.

[0036] In this embodiment, a double-sided synchronous scanning device is proposed, a scanning channel is formed between the two scanning components 1, two backlight plates 2 are respectively used to provide backlight for the scanning component 1 on the opposite side and are fixed to the scanning component 1 on the same side, and a light guide groove 21 corresponding to the light inlet of the corresponding scanning component 1 is provided on the side of the backlight plate 2 facing the scanning channel, and a backlight light source 22 is arranged in the light guide groove 21; when the two scanning components 1 work synchronously, since the backlight plate 2 always needs to provide backlight for the opposite scanning component 1, the reflected light generated by the backlight plate 2 on the scanned sample will enter the light inlet 11 of the scanning component 1 on the same side, affecting the image scanning effect, therefore, by arranging the light guide groove 21 on the backlight plate 2, the outgoing light of the backlight light source 22 is limited to the area facing the light inlet 11 of the opposite scanning component 1 through the light guide groove 21, thereby avoiding the side overflow scattered light of the backlight plate 2 from interfering with the scanning component 1 on the same side, thereby achieving synchronous high-quality scanning of the two scanning components 1.

[0037] Reference Figure 3 Since the light emitted by the light source 22 has multiple directions, there is still a certain amount of scattered light after it is emitted from the light guide groove 21, which interferes with the adjacent scanning component 1 and causes uneven light intensity on the scanning area, thereby affecting the scanning effect. Therefore, in a further specific design, a reflector 23 is further provided in the light guide groove 21, and an arc-shaped reflecting surface arranged toward the light inlet 11 is provided on the reflector 23, and the light source 22 is arranged toward the arc-shaped reflecting surface. During the operation of the backlight panel, the light emitted by the light source 22 first passes through the arc-shaped reflecting surface of the reflector 23, and the light beams entering at different incident angles are reflected by the arc-shaped reflecting surface to form parallel light beams, and then pass through the restriction of the exit of the light guide groove 21, thereby forming parallel light beams toward the light inlet 11, ensuring the backlight effect of the relative scanning component 1 while avoiding light interference with the scanning component 1 on the same side.

[0038] In the specific arrangement of the light source 22 and the reflector 23 in the light guide groove 21, the arc-shaped reflective surface is located on one side of the reflector 23, and the light source 22 is located on the side of the reflector 23 close to the arc-shaped reflective surface and is installed on the side wall of the light guide groove 21; while improving the space utilization rate in the light guide groove 21, the light emitted by the light source is reflected by the arc-shaped reflective surface and then emitted from the light guide groove 21, thereby avoiding scattered light from emitting from the light guide groove 21.

[0039] In a further specific design, a baffle 24 extending horizontally from a side wall is provided at the opening of the light guide groove 21, and the baffle 24 is located below the light source 22; the baffle 24 blocks the light source 22 from above, further preventing scattered light of the light source 22 from being emitted from the light guide groove 21.

[0040] During the scanning process of food grains, in order to ensure the front scanning effect, in other specific design methods of the scanning assembly 1, a supplementary light lamp 3 is also arranged on the scanning assembly 1 in the direction towards the backlight plate 2. During scanning, the supplementary light lamp 3 provides supplementary light for the front of the scanning area to ensure the quality of the scanned image.

[0041] Since the scanning assembly 1 adopts a moving scanning working mode and its scanning area is also relatively translated, therefore, in order to provide real-time supplementary light for the scanning area, in the specific design method of the supplementary light lamp 3, two supplementary light lamps 3 are arranged on the scanning assembly 1. The two supplementary light lamps 3 are respectively located on both sides of the light inlet 11 and are arranged in sequence along the direction away from the adjacent backlight plate 2; the two supplementary light lamps provide supplementary light for the scanning area from both sides of the light inlet.

[0042] Refer to Figure 4 In the specific design method of the supplementary light lamp 3, the supplementary light lamp 3 is arranged obliquely, and the distance between the two supplementary light lamps 3 gradually decreases in the direction away from the opposite backlight plate 2; the supplementary light lamp 3 is arranged obliquely so that the emitted light of the two supplementary light lamps 3 is all directed towards the scanning area, avoiding interference of scattered light on the backlight area of the adjacent backlight plate.

[0043] Refer to Figure 5 and 6 In another embodiment, the present invention also proposes a synchronous double-sided scanner, including the above-mentioned double-sided synchronous scanning device; specifically, it includes: an upper scanning assembly 20, an upper backlight plate 40, a lower scanning assembly 30, a lower backlight plate 50, a housing 10 and a driving mechanism;

[0044] Parallel upper and lower slide rails 20 and 30 are arranged inside the housing 10. The upper scanning assembly 20 and the lower scanning assembly 30 are respectively slidably installed on the upper and lower slide rails 20 and 30. The driving mechanism is used to drive the upper scanning assembly 20 and the lower scanning assembly 30 to slide synchronously. The upper backlight plate 40 is fixed to the upper scanning assembly 20, and the lower backlight plate 50 is fixed to the lower scanning assembly 30.

[0045] In the specific design of the housing 10, in order to facilitate the installation of the scanning assembly and the backlight plate, it can be set as an upper and lower housing structure.

[0046] In the specific working process of the synchronous double-sided scanner of this embodiment, first, the sample to be scanned is placed in the scanning channel. The upper scanning component 20 and the upper backlight plate 40 are located on one side of the sample to be scanned, and the lower backlight plate 50 and the lower scanning component 30 are located on the other side of the sample to be scanned. The upper scanning component 20 scans the upper surface of the sample, and the lower backlight plate 50 serves as the background of the upper scanned image. Similarly, the lower scanning component 30 scans the lower surface of the sample, and the upper backlight plate 40 serves as the background of the lower scanned image. During scanning, the driving mechanism drives the upper scanning component 20 and the lower scanning component 30 to slide synchronously along the upper and lower slide rails. At the same time, the upper scanning component 20 cooperates with the lower backlight plate 50 to scan the upper surface image of the sample, and the lower scanning component 30 cooperates with the upper backlight plate 40 to scan the lower surface image of the sample, so as to synchronously complete the scanning of the images on both sides of the sample.

[0047] To facilitate the loading and unloading of the sample to be scanned, the synchronous double-sided scanner of this embodiment further includes a loading tray 60 that can be placed in the scanning channel. A transparent loading area is provided in the middle of the loading tray 60.

[0048] To facilitate the subsequent processing of the upper and lower images, it is necessary to calibrate the upper and lower scanning components before scanning. Usually, the balance calibration bar for scanner initialization is directly set on the scanner housing on the opposite side, which results in a larger thickness of the scanner, reduces the placement space of the loading tray, and further limits the size range of the samples that can be detected. Therefore, in the specific design of the loading tray, upper calibration parts and lower calibration parts for calibrating the upper scanning component 20 and the lower scanning component 30 are provided on the upper and lower sides of the loading tray 60 respectively. The upper calibration part and the lower calibration part are located on the same side of the transparent loading area along the extension direction of the upper slide rail 101. Before scanning, the upper scanning component 20 and the lower scanning component 30 are initially located on the side of the transparent loading area close to the upper and lower calibration parts. The upper and lower scanning components are respectively initialized for color balance through the upper and lower calibration parts, and then the upper and lower surface images of the grain particles are obtained through the upper and lower scanning components respectively.

[0049] In the specific setting method of the scanning calibration area, this embodiment further includes a balance calibration bar 9. The loading tray 60 has a first mounting opening and a second mounting opening. A transparent tray is provided at the first mounting opening, and the transparent tray forms the transparent loading area at the first mounting opening. The second mounting opening is located on one side of the first mounting opening along the extension direction of the upper and lower slide rails. The balance calibration bar 9 is installed at the second mounting opening. By setting one balance calibration bar 9 and using both sides of the balance calibration bar as the initialization calibration areas for the two-sided scanners respectively, which play a role in positioning and color balance, the initialization calibration of the two-sided scanner can be achieved, facilitating the setting of the two initialization calibration areas. Preferably, the balance calibration bar can adopt a white balance calibration bar.

[0050] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solutions and inventive concepts of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A double-sided synchronous scanning device, characterized in that, Comprising: Two scanning components (1) and two backlight plates (2); A scanning channel is formed between the two scanning components (1). The two scanning components (1) are arranged staggeredly. The two backlight plates (2) are respectively located on both sides of the scanning channel and are fixedly arranged with the scanning component (1) on the same side. Each backlight plate (2) is used to provide backlight for the scanning component (1) on the opposite side; On the side of the scanning component (1) facing the scanning channel, there is a light inlet (11). On the side of the backlight plate (2) facing the scanning channel, there is a light guide groove (21) corresponding to the light inlet (11) of the corresponding scanning component (1). A light source (22) is arranged in the light guide groove (21); By arranging a light guide groove on the backlight plate, the outgoing light of the backlight source is restricted in the area facing the light inlet of the opposite scanning component through the light guide groove, thereby avoiding the interference of the scattered light overflowing laterally from the backlight plate to the scanning component on the same side; A reflector (23) is also arranged in the light guide groove (21). An arc-shaped reflecting surface facing the light inlet (11) is arranged on the reflector (23), and the light source (22) is arranged facing the arc-shaped reflecting surface; A supplementary light lamp (3) is also arranged on the scanning component (1) in the direction facing the backlight plate (2).

2. The double-sided synchronous scanning device according to claim 1, wherein The arc-shaped reflecting surface is located on one side of the reflector (23). The light source (22) is located on the side of the reflector (23) close to the arc-shaped reflecting surface and is installed on the side wall of the light guide groove (21).

3. The double-sided synchronous scanning device according to claim 2, characterized in that, At the opening of the light guide groove (21), there is a baffle (24) horizontally extending from one side wall. The light source (22) is located below the baffle (24).

4. The double-sided synchronous scanning device according to claim 1, characterized in that, Two supplementary light lamps (3) are arranged on the scanning component (1). The two supplementary light lamps (3) are respectively located on both sides of the light inlet (11) and are arranged in sequence along the direction away from the adjacent backlight plate (2).

5. The double-sided synchronous scanning device according to claim 4, wherein, The supplementary light lamps (3) are arranged obliquely, and the distance between the two supplementary light lamps (3) gradually decreases in the direction away from the opposite backlight plate (2).

6. A synchronous double-sided scanner, characterized in that, Comprising the double-sided synchronous scanning device according to any one of claims 1-5.

7. The synchronous double-sided scanner according to claim 6, characterized in that, Comprising an upper scanning component (20), an upper backlight plate (40), a lower scanning component (30), a lower backlight plate (50), a housing (10) and a driving mechanism; An upper slide rail (101) and a lower slide rail (102) are arranged in parallel in the housing (10). The upper scanning component (20) and the lower scanning component (30) are respectively slidably installed on the upper slide rail (101) and the lower slide rail (102). The driving mechanism is used to drive the upper scanning component (20) and the lower scanning component (30) to slide synchronously. The upper backlight plate (40) is fixed to the upper scanning component (20), and the lower backlight plate (50) is fixed to the lower scanning component (30).

8. The synchronous double-sided scanner according to claim 7, wherein, It further includes a load tray (60) that can be placed in the scanning channel. A transparent loading area is arranged in the middle of the load tray (60).

9. The synchronous double-sided scanner according to claim 8, wherein, Upper and lower calibration parts for calibrating the upper scanning component (20) and the lower scanning component (30) are respectively arranged on the upper and lower sides of the load tray (60). The upper and lower calibration parts are located on the same side of the transparent loading area along the extension direction of the upper slide rail (101).

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