Scanning device

Abstract

This invention provides a scanning device. The scanning device includes a frame and a light source, a lens, photoelectric conversion chips, and a circuit board disposed within the frame. Multiple photoelectric conversion chips are arranged on the circuit board along the scanning direction of the scanning device. The signal output pins of the multiple photoelectric conversion chips are connected together via signal output lines to superimpose and output the data image signals from the multiple photoelectric conversion chips. This invention solves the problem of low transmission efficiency in existing scanning devices.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensor devices, in particular to a scanning device. BACKGROUND

[0002] The scanning device generally has the functions of image scanning, image recognition and image processing, and generally needs to transmit a large amount of data. The processing of the read pictures is also time-consuming and requires a large amount of calculation. The transmission efficiency is low. At present, it is realized by improving hardware, computer configuration, algorithm and other ways. Although it can be realized, it is not satisfactory. If the data volume is too large, the technology cannot be realized, and the efficiency can only be reduced. If a higher resolution scanning device is used, the data volume will increase exponentially, and the hardware, algorithm and speed will have higher requirements.

[0003] That is, the scanning device in the prior art has the problem of low transmission efficiency. SUMMARY

[0004] The main purpose of the present application is to provide a scanning device to solve the problem of low transmission efficiency of the scanning device in the prior art.

[0005] In order to achieve the above purpose, the present application provides a scanning device, which comprises a frame body and a light source, a lens, a photoelectric conversion chip and a circuit board arranged in the frame body, wherein the photoelectric conversion chip is a plurality of photoelectric conversion chips, the plurality of photoelectric conversion chips are arranged on the circuit board along the scanning direction of the scanning device, the signal output pins of the plurality of photoelectric conversion chips are connected together through a signal output line, and the data image signals of the plurality of photoelectric conversion chips are superimposed and output.

[0006] Further, the signal output line has a plurality of output branches, and the plurality of output branches are connected one by one with the signal output pins of the plurality of photoelectric conversion chips, so that the data image signals of the plurality of photoelectric conversion chips are transmitted by one signal output line.

[0007] Further, each photoelectric conversion chip has a plurality of light-sensitive holes arranged in a straight line, and the light-sensitive holes of the plurality of photoelectric conversion chips are located on the same straight line.

[0008] Further, the plurality of photoelectric conversion chips are divided into a plurality of groups, the number of photoelectric conversion chips in each group is greater than or equal to 1, and the plurality of groups of photoelectric conversion chips are sequentially arranged along the scanning direction.

[0009] Further, the lens is located on the side of the photoelectric conversion chip away from the circuit board, and the lens corresponds to the photoelectric conversion chip. The light source is located on the side of the lens and is spaced apart from the lens. The light emitting side of the light source is arranged towards the scanning surface of the scanning device.

[0010] Further, the scanning device further comprises a light collecting member, and the light collecting member is arranged on the light emitting side of the light source.

[0011] Further, the light collecting member is a convex lens.

[0012] Further, the distance between the scanning device and the surface to be scanned of the scanning device is greater than or equal to 0 mm.

[0013] Further, each photoelectric conversion chip is in a strip shape, and the sizes of the plurality of photoelectric conversion chips in the strip shape are equal.

[0014] Further, the photoelectric conversion chip is glued to the circuit board, and the circuit board has a signal output line.

[0015] The scanning device comprises a frame body and a light source, a lens, a photoelectric conversion chip and a circuit board arranged in the frame body, wherein the photoelectric conversion chip is a plurality of photoelectric conversion chips, the plurality of photoelectric conversion chips are arranged on the circuit board along the scanning direction of the scanning device, the signal output pins of the plurality of photoelectric conversion chips are connected together through a signal output line, and the data image signals of the plurality of photoelectric conversion chips are superimposed and output.

[0016] The plurality of photoelectric conversion chips are connected together through a signal output line in the hardware layer, the data image signals of the plurality of photoelectric conversion chips are transmitted by the signal output line, the data image signals of the plurality of photoelectric conversion chips are superimposed and transmitted, that is, the data image signals of the plurality of photoelectric conversion chips are transmitted at the same time, the transmission speed of the superimposed data image signals is equivalent to the transmission speed of one photoelectric conversion chip, the overall transmission efficiency is greatly improved, the data image size outputted after the superposition of the plurality of photoelectric conversion chips is greatly compressed, subsequent identification and processing are facilitated, the algorithm processing process is simplified, the identification processing speed is improved, the subsequent processing time is saved, and the image information is not lost. At the same time, the use of high-resolution equipment to transmit a large amount of data is avoided, and the cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings constituting a part of the specification of the present application are used to provide a further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 Fig. 1 shows a scanning device according to an embodiment of the present application;

[0019] Figure 2 Fig. 2 shows the arrangement of the photoelectric conversion chip of the scanning device of one optional embodiment of the present application; Figure 1 Fig. 3 shows the signal diagram of the plurality of photoelectric conversion chips in Fig. 2;

[0020] Figure 3 a side view of the scanning device in Figure 1 a scanning device in

[0021] Figure 4 a side view of the scanning device in Figure 1 a scanning device in

[0022] Figure 5 a scanning device of the present application in scanning a color-uniform surface to be scanned to output an image;

[0023] Figure 6 a scanning device of the present application in scanning a surface to be scanned with numbers to output an image;

[0024] Figure 7 a schematic view of an output image of a scanning device in the prior art;

[0025] Figure 8 a schematic view of an output image of a scanning device of the present application.

[0026] Wherein, the above-mentioned drawings include the following reference signs:

[0027] 10, frame; 20, light source; 30, lens; 40, photoelectric conversion chip; 41, photosensitive aperture; 42, signal output pin; 50, circuit board; 60, surface to be scanned; 70, signal output line; 71, output branch line. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meaning as that generally understood by the ordinary skilled in the art to which the present application belongs.

[0030] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the directions shown in the drawings, or are directed to the vertical, perpendicular or gravity directions of the components themselves; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above-mentioned orientation words are not used to limit the present application.

[0031] In order to solve the problem of low transmission efficiency of the scanning device in the prior art, the present application provides a scanning device.

[0032] As Figures 1 to 8As shown, the scanning device includes a frame 10 and a light source 20, a lens 30, a photoelectric conversion chip 40, and a circuit board 50 disposed in the frame 10. There are multiple photoelectric conversion chips 40, which are arranged on the circuit board 50 along the scanning direction of the scanning device. The signal output pins 42 of the multiple photoelectric conversion chips 40 are connected together through signal output lines 70 to superimpose and output the data image signals of the multiple photoelectric conversion chips 40.

[0033] This application employs a hardware-level connection of photoelectric conversion chips 40, connecting the signal output pins 42 of multiple photoelectric conversion chips 40 together through a signal output line 70. This ensures that the data image signals from multiple photoelectric conversion chips 40 are transmitted via the signal output line 70, allowing for superimposed transmission of these signals. In other words, the data image signals from multiple photoelectric conversion chips 40 are transmitted simultaneously, and the transmission speed of the superimposed signals is equivalent to that of a single photoelectric conversion chip 40, significantly improving overall transmission efficiency. Simultaneously, the size of the output data image from the superimposed multiple photoelectric conversion chips 40 is greatly compressed, facilitating subsequent recognition and processing, simplifying the algorithm processing, increasing recognition and processing speed, saving subsequent processing time, and ensuring no loss of image information. Furthermore, it avoids using high-resolution equipment to transmit excessively large amounts of data, saving costs.

[0034] Furthermore, the hardware connection of the multiple photoelectric conversion chips 40 in this application is simple and easy to operate. This greatly expands the previously limited application scenarios, reduces the requirements for hardware and algorithms, and has outstanding advantages in certain application scenarios, such as single-color object defect detection and foreign object detection.

[0035] like Figure 1 As shown, multiple photoelectric conversion chips 40 are arranged at equal intervals along a straight line. Each photoelectric conversion chip 40 is strip-shaped and of equal size, extending along the scanning direction of the scanning device. Each photoelectric conversion chip 40 has a signal output pin 42, which is used to output the data image signal received by the photoelectric conversion chip 40. By connecting the signal output pins 42 of each photoelectric conversion chip 40 together, the data image signals are transmitted through the same line, so that the signals of multiple photoelectric conversion chips 40 are superimposed from front to back and simultaneously shifted and serially output. This makes the size of the data image output by the superimposed multiple photoelectric conversion chips 40 equal to the size of the data image output by a single photoelectric conversion chip 40, reducing the size of the image generated after scanning. In image recognition processing, processing small images is simpler and faster, thus greatly improving the recognition processing efficiency while ensuring that no defects or foreign objects in the image are lost.

[0036] In addition, the scanning device of this application can achieve the transmission of a large amount of data without spending a lot of time, and does not require high-end hardware, high-end computers, or complex algorithms for matching, which greatly reduces costs.

[0037] In addition, such as Figure 3 and Figure 4 As shown, circuit board 50 is located on one side inside frame 10. A photoelectric conversion chip 40 is mounted on circuit board 50 to provide circuitry for the photoelectric conversion chip 40. Lens 30 is located on the side of photoelectric conversion chip 40 away from circuit board 50 and corresponds to photoelectric conversion chip 40. Light source 20 is located around lens 30 and spaced apart from lens 30. The light-emitting side of light source 20 faces the scanning surface 60 of the scanning device. In operation, the scanning device of this application emits light from light source 20 onto the scanning surface 60, forming a certain illumination range. Light reflected back from the scanning surface 60 passes through lens 30 and illuminates the corresponding photoelectric conversion chip 40. Photoelectric conversion chip 40 converts the received image light signal into an electrical signal, which is then output through signal output pin 42. The output electrical signal image is then processed and recognized by subsequent image processing algorithms.

[0038] like Figure 1 As shown, the signal output line 70 has multiple output branches 71, each of which is connected to a corresponding signal output pin 42 of a plurality of photoelectric conversion chips 40, so that the data and image signals of the plurality of photoelectric conversion chips 40 are all transmitted through a single signal output line 70. In other words, multiple output lines are led out from the signal output line 70, and the ends of these output lines furthest from the signal output line 70 are connected to a corresponding signal output pin 42. The signals of all photoelectric conversion chips 40 are connected together, ensuring hardware-level connectivity. This is achieved through the design of the circuit board 50, which has signal output lines 70. By rationally routing the circuit board 50, the signal output pins 42 of the photoelectric conversion chips 40 are connected together, and data is transmitted through a single line.

[0039] It should be noted that the multiple photoelectric conversion chips 40 in this application are connected in parallel as described above, allowing the signals from the multiple photoelectric conversion chips 40 to be superimposed and output. For example, in a scanning device with 10 photoelectric conversion chips 40, each chip outputs 864 data points, and scanning 100 lines, the amount of data to be transmitted is 864*10*100; while the scanning device of this application transmits only 864*100 data points. The speed is increased tenfold without loss of detection function. The hardware data output rate is increased exponentially, and the software processing speed is increased exponentially when scanning the same number of lines of a pattern. This application is mainly used in the field of detecting battery films (single color). Dust under a single color can have different colors and can still be detected. It is not necessary to know the specific location of the dust; the battery film in the row where the dust is located can be directly removed.

[0040] like Figure 1 As shown, each photoelectric conversion chip 40 has multiple photosensitive apertures 41 arranged in a straight line, and the photosensitive apertures 41 of the multiple photoelectric conversion chips 40 are located on the same straight line. The photosensitive apertures 41 are used to receive image light information and convert the light signal into an electrical signal. The signals converted by the photosensitive apertures 41 are superimposed and simultaneously output by the signal output line 70.

[0041] like Figure 2 As shown, from left to right, these are the first chip to the nth chip. Each photoelectric conversion chip 40 has m signals. After signal superposition design, multiple photoelectric conversion chips 40 will also output only m signals. This is because the signals from each photoelectric conversion chip 40 are superimposed. For example, the signal 1 on the superimposed signal line is actually the result of superimposing the first signal of n photoelectric conversion chips 40. Similarly, the signal m on the superimposed signal line is the result of superimposing the mth signal of n photoelectric conversion chips 40.

[0042] Specifically, the length of the scanning device in this application can be customized. When the required scanning device is too long, multiple photoelectric conversion chips 40 are divided into multiple groups, with each group containing more than or equal to one photoelectric conversion chip 40. The multiple groups of photoelectric conversion chips 40 are arranged sequentially along the scanning direction, and each group of photoelectric conversion chips 40 corresponds to a circuit board 50. The multiple circuit boards 50 are connected by splicing.

[0043] Specifically, the photoelectric conversion chip 40 is bonded to the circuit board 50. This arrangement helps ensure the connection stability between the photoelectric conversion chip 40 and the circuit board 50, and facilitates stable data transmission from the photoelectric conversion chip 40. Similarly, the circuit board 50, the light source 20, and the lens 30 are all fixed to the frame 10 by dispensing adhesive, thereby ensuring the relative stability of the components within the frame 10, guaranteeing the stability and accuracy of optical path transmission and reception, and preventing image information loss.

[0044] Specifically, the scanning device also includes a focusing element, which is disposed on the light-emitting side of the light source 20. In a specific embodiment of this application, the focusing element is a convex lens 30. This arrangement enables the focusing element to concentrate the light emitted from the light source 20, thereby ensuring that the brightness of the light illuminating the surface 60 to be scanned meets the requirements and is uniform.

[0045] In this embodiment, the distance between the scanning device and the scanning surface 60 of the scanning device is greater than or equal to 0 mm, so that the scanning device of this application can realize contact scanning and interval scanning.

[0046] like Figure 5 The image shown is the output image of the scanning device of this application when detecting foreign objects or defects on the surface 60 to be scanned. The background is free of foreign objects, and the color of the surface 60 to be scanned is uniform. Because the surface 60 to be scanned has a uniform color, the superimposed image will also be of the same color. If the surface 60 to be scanned has foreign objects or defects, the color will be inconsistent with the surface 60 to be scanned, but the foreign objects or defects will still be visible after superposition.

[0047] like Figure 6 As shown, when the surface 60 to be scanned has patterns or numbers, the image is also superimposed after the signal is superimposed. For example, if there are "5" and "6" spaced apart on the surface 60 to be scanned, the image output by the scanning device after scanning is the superimposed image of "5" and "6".

[0048] like Figure 7 As shown, this is the final output image of a scanning device using ten photoelectric conversion chips 40 to scan 2000 lines of data in the prior art. The image is a whole formed by sequentially stitching together the scanned images of the ten photoelectric conversion chips 40, equivalent to 10 unit lengths. Figure 8 As shown, this application uses a scanning device with ten photoelectric conversion chips 40 to scan 2000 lines of data, resulting in the final output image. Since the signal output pins 42 of each photoelectric conversion chip 40 are connected together, the images from multiple photoelectric conversion chips 40 are superimposed. This signal superposition reduces the image size to approximately one unit length, simplifying the image recognition process considerably. Furthermore, the superposition of images does not affect the accuracy of subsequent recognition; no additional algorithm is needed to separate the superimposed images, allowing for direct recognition processing.

[0049] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A scanning device, characterized by The scanning device comprises a frame (10), a light source (20), a lens (30), a photoelectric conversion chip (40) and a circuit board (50) arranged in the frame (10), The photoelectric conversion chip (40) is arranged on the circuit board (50) along the scanning direction of the scanning device, the signal output pins (42) of the photoelectric conversion chips (40) are connected together through the signal output line (70) to superimpose and output the data image signals of the photoelectric conversion chips (40), the data image size output by the superimposed photoelectric conversion chips (40) is equal to the data image size output by one photoelectric conversion chip (40), each photoelectric conversion chip (40) has light-sensitive light holes (41) arranged in a straight line, the light-sensitive light holes (41) of the photoelectric conversion chips (40) are located on the same straight line, the photoelectric conversion chips (40) are divided into groups, the number of photoelectric conversion chips (40) in each group is greater than or equal to 1, and the photoelectric conversion chips (40) in the groups are arranged in sequence along the scanning direction. In the process of detecting the surface to be scanned (60) and outputting the image by the scanning device, if the background of the surface to be scanned (60) has no foreign matter and the color is consistent, the data image output by the superimposed photoelectric conversion chips (40) has the same color and does not display foreign matter; if the surface to be scanned (60) has foreign matter or defects, and the color of the foreign matter or defects is different from the color of the surface to be scanned (60), the data image output by the superimposed photoelectric conversion chips (40) displays foreign matter or defects.

2. The scanning device of claim 1, wherein, The signal output line (70) has a plurality of output branches (71), and each output branch (71) is connected to the signal output pin (42) of one photoelectric conversion chip (40) to make the data image signals of the photoelectric conversion chips (40) transmitted by one signal output line (70).

3. The scanning device of claim 1, wherein, The lens (30) is located on the side of the photoelectric conversion chip (40) away from the circuit board (50), the lens (30) corresponds to the photoelectric conversion chip (40), the light source (20) is located on the side of the lens (30) and is spaced apart from the lens (30), and the light emitting side of the light source (20) is arranged towards the surface to be scanned (60) of the scanning device.

4. The scanning device of claim 1, wherein, The scanning device further comprises a light collector arranged on the light emitting side of the light source (20).

5. The scanning device of claim 4, wherein, The light collector is a convex lens (30).

6. The scanning device according to any one of claims 1 to 5, characterized in that, The distance between the scanning device and the surface to be scanned (60) of the scanning device is greater than or equal to 0 mm.

7. The scanning device according to any one of claims 1 to 5, characterized in that, The shape of each photoelectric conversion chip (40) is strip-shaped, and the sizes of the strip-shaped photoelectric conversion chips (40) are equal.

8. The scanning apparatus according to any one of claims 1 to 5, characterized in that, The photoelectric conversion chip (40) is glued to the circuit board (50), and the circuit board (50) has the signal output line (70).

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