Intelligent Sorting System and Device for Financial Vouchers Based on Multi-Band Gray Scale Recognition

Abstract

The present invention discloses an intelligent sorting system and device for financial vouchers based on multi-band grayscale recognition, including a financial voucher placement platform, a financial voucher adsorption and adjustment component, a flat rolling roller assembly, and an image recognition module; the flat rolling roller assembly includes two roller groups that are symmetrically arranged up and down and form a surface contact, and the image recognition module includes a light emitting unit, a picture acquisition unit, a position recognition unit, a grayscale conversion unit, and a grayscale judgment unit. The unilateral light emitted by the light emitting unit provided on one side of the financial voucher placement platform causes shadows to be generated on a part of the backlight side of the wrinkles. After the collected pictures are subjected to grayscale conversion, the pixel grayscale value at the wrinkle position is higher than the grayscale value at the flat position; the pixel grayscale values of the grayscale pictures are compared according to the set grayscale threshold, so as to judge whether there are wrinkles on the financial vouchers, and the wrinkles on the financial vouchers are flattened by the surface contact rolling formed by the flat rolling roller assembly to obtain flat financial vouchers.

Description

Technical Field

[0001] The present invention relates to the technology of material regularization, and in particular to an intelligent sorting system and device for financial vouchers based on multi-band gray-scale recognition. Background Art

[0002] With the development of the economy, the financial circulation of more and more enterprises and administrative units is more frequent, which makes office supplies develop rapidly. Among them, the work of sorting materials will take a lot of time and energy of staff. Especially in the financial voucher reimbursement work in financial management, each company involves a large amount of financial voucher reimbursement work every month. In order to standardize the financial reimbursement system, the process of financial voucher reimbursement is relatively more cumbersome. Due to the large variety and quantity of financial vouchers, and the process of classifying and pasting them is boring and monotonous, sorting financial voucher materials requires a lot of time and energy of the reimburser, and the error rate is high. To overcome the above problems, an automatic financial voucher sorter has been developed accordingly, which realizes the automatic sorting and pasting of financial vouchers and improves the reimbursement efficiency. However, since financial vouchers are paper materials, they are inevitably wrinkled during storage. If the wrinkled financial vouchers and ordinary financial vouchers are distributed and placed in the financial voucher sorting box together, they are likely to be bent again due to the extrusion of other financial vouchers in the financial voucher sorting box and thus easily damaged. At the same time, they will also be stuck in the financial voucher sorting box due to the accumulation of other financial vouchers, causing the problem of blockage of the financial voucher sorting box. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above technical deficiencies and propose an intelligent sorting system and device for financial vouchers based on multi-band gray-scale recognition that can pre-flatten financial vouchers.

[0004] To achieve the above technical purpose, the technical solution of the present invention provides an intelligent sorting device for financial vouchers, which includes a financial voucher placement platform, a financial voucher adsorption and adjustment component, and a flattening roller assembly; wherein, the financial voucher adsorption and adjustment component is arranged directly above the financial voucher placement platform, and the financial voucher adsorption and adjustment component includes at least one guide rail, a telescopic component and an adsorption component. The guide rail extends horizontally towards the flattening roller assembly, the fixed end of the telescopic component is slidably connected to the guide rail through a slider, and the adsorption component is fixedly arranged at the movable end of the telescopic component; the flattening roller assembly is arranged on one side of the financial voucher placement platform and includes two roller groups symmetrically arranged up and down, and a surface contact is formed between the two roller groups.

[0005] The technical solution of the present invention also provides an intelligent financial voucher sorting system based on multi-band gray-scale recognition, which includes the above-mentioned intelligent financial voucher sorting device and an image recognition module. The image recognition module includes a light-emitting unit, a picture acquisition unit, a position recognition unit, a gray-scale conversion unit, and a gray-scale judgment unit. The light-emitting unit includes an ambient light source, and the ambient light source is an LED lamp array arranged on one side of the financial voucher placement platform; the picture acquisition unit is arranged above the financial voucher placement platform and is used to collect images of financial vouchers on the financial voucher placement platform. The position recognition unit is used to identify the position of the financial voucher according to the pre-stored shape and size and in combination with a three-dimensional coordinate system. The gray-scale conversion unit is used to convert the collected picture into a gray-scale picture, and the gray-scale judgment unit is used to compare the pixel gray-scale values of the gray-scale picture according to a set gray-scale threshold, and judge whether there is a wrinkle on the financial voucher based on the judgment condition that the pixel gray-scale value at the wrinkle position is higher than the set gray-scale threshold.

[0006] Compared with the prior art, the present invention can lift the stacked financial vouchers one by one into the flat rolling roller assembly through the financial voucher adsorption and adjustment component, so that the wrinkled financial vouchers in the stacked financial vouchers can be rolled and flattened, which is convenient for subsequent other operations on the financial vouchers. At the same time, the unilateral light emitted by the LED lamp array arranged on one side of the financial voucher placement platform makes a part of the backlight side of the wrinkle on the financial voucher produce a shadow under the unilateral light provided by the LED lamp array. After the gray-scale conversion of the picture collected by the picture acquisition unit, the pixel gray-scale value at the wrinkle position is higher than the gray-scale value at the flat position; compare the pixel gray-scale values of the gray-scale picture according to the set gray-scale threshold, and based on the judgment condition that the pixel gray-scale value at the wrinkle position is higher than the set gray-scale threshold, it is judged whether there is a wrinkle on the financial voucher, and the wrinkle on the financial voucher is rolled flat through the surface contact rolling formed by the flat rolling roller assembly to obtain a flat financial voucher. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic structural diagram of the intelligent financial voucher sorting device in the embodiment of the present invention;

[0008] Figure 2 is a schematic structural diagram of the financial voucher adsorption and adjustment component in the embodiment of the present invention;

[0009] Figure 3 is a schematic structural diagram of the financial voucher placement platform and the flat rolling roller assembly in the embodiment of the present invention;

[0010] Figure 4 is a block diagram of the units of the image recognition module in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0012] As Figures 1 to 3 shown, an embodiment of the present invention provides an intelligent financial voucher sorting system based on multi-band grayscale recognition, which includes an intelligent financial voucher sorting device and an image recognition module 4.

[0013] Among them, the intelligent financial voucher sorting device includes a financial voucher placement platform 1, a financial voucher adsorption and adjustment component 2, and a flattening roller assembly 3; the financial voucher adsorption and adjustment component 2 is arranged directly above the financial voucher placement platform 1, and the financial voucher adsorption and adjustment component 2 at least includes a rotating component, a telescopic component and an adsorption component. The steering end of the rotating component can rotate around the horizontal axis towards the flattening roller assembly 3. The fixed end of the telescopic component is fixedly connected to the steering end of the rotating component, and the adsorption component is fixedly arranged at the movable end of the telescopic component; specifically as Figure 2 shown, the financial voucher adsorption and adjustment component 2 includes a first rotating component 21, a second rotating component 22, a third rotating component 23, a fourth rotating component 24, a first telescopic component 25, and a first adsorption component 26; the first rotating component 21 can rotate around its own axis vertically; the second rotating component 22 is provided with a flat base, and a rotating hinge end extends vertically upward at the center position of the flat base. The rotating hinge end is hinged to the first rotating component 21 and can rotate around the horizontal axis towards the flattening roller assembly 3; one end of the third rotating component 23 rotates around a base axis perpendicular to the flat base, and the other end is hinged to the fourth rotating component 24; the fourth rotating component 24 includes a first part and a second part arranged perpendicular to each other. The free end of the first part is hinged to the other end of the third rotating component 23 and can rotate around the base axis. The second part extends along the base axis and is provided with a first guide rail parallel to the base axis; the first telescopic component 25 includes a lifting rod slidably sleeved on the first guide rail through a slider, and the first adsorption component 26 is fixedly arranged at the lower end of the lifting rod.

[0014] The leveling roller assembly 3 includes two roller groups 31 and 32 arranged oppositely up and down. Each roller group includes at least one set of rolling conveyor belts. The roller shafts of the rolling conveyor belts are arranged parallel to the side of the leveling roller assembly 3 corresponding to the financial voucher placement platform 1. The conveying direction of the rolling conveyor belts is arranged perpendicular to the length extension direction of the roller shafts. To ensure the accurate feeding of financial vouchers between the two roller groups, one of the two roller groups includes two sets of rolling conveyor belts arranged parallel in the horizontal direction. A second adsorption component 33 is provided between the two rolling conveyor belts. The adsorption port of the second adsorption component 33 is arranged towards the side of the financial voucher placement platform 1. As Figure 3 shown, the lower roller group 32 includes two sets of rolling conveyor belts arranged parallel in the horizontal direction. A second adsorption component 33 is provided between the two rolling conveyor belts. The adsorption port of the second adsorption component 33 is arranged towards the side of the financial voucher placement platform 1, and is used to adsorb the financial vouchers conveyed by the financial voucher adsorption adjustment component 2 towards the roller direction and send them between the two roller groups.

[0015] The image recognition module 4 includes a light emitting unit 41, a picture acquisition unit 42, a position recognition unit 43, a gray scale conversion unit 44, and a gray scale judgment unit 45. The light emitting unit 41 includes an ambient light source 411. The ambient light source 411 is an LED lamp array arranged on one side of the financial voucher placement platform 1. The LED lamp array provides ambient light for the financial vouchers from one side of the financial voucher placement platform 1. If there are wrinkles on the financial vouchers, shadows will be generated on the backlight side of the wrinkled part under the ambient light provided by the LED lamp array. Whether there are wrinkles on the financial vouchers can be initially judged according to the difference between the wrinkled part and the flat part. The picture acquisition unit 42 is arranged above the financial voucher placement platform 1 and is used to acquire images of the financial vouchers on the financial voucher placement platform 1. The picture acquisition unit 42 can select a CCD camera. The position recognition unit 43 is used to identify the position of the financial voucher according to the pre-stored shape and size and in combination with a three-dimensional coordinate system, that is, by establishing a three-dimensional coordinate system for the financial voucher placement platform 1, then identifying the financial voucher according to the pre-stored shape and size, and then calculating the specific position of the financial voucher from the three-dimensional coordinate system. The gray scale conversion unit 44 is used to convert the acquired pictures into gray scale pictures. When there are wrinkles on the financial vouchers, shadows will be generated on the backlight side of the wrinkled part under the unilateral light provided by the LED lamp array. After the pictures acquired by the picture acquisition unit 42 are converted into gray scale, the pixel gray scale value at the wrinkle position is higher than the gray scale value at the flat position. The gray scale judgment unit 45 is used to compare the pixel gray scale values of the gray scale pictures according to the set gray scale threshold, and judge whether there are wrinkles on the financial vouchers based on the judgment condition that the pixel gray scale value at the wrinkle position is higher than the set gray scale threshold.

[0016] To further determine the presence of wrinkles, the light-emitting unit 41 further includes a background light source 412 disposed in the direction of the light source. The background light source 412 is disposed on a horizontal adjustment arm 413. The horizontal adjustment arm can be any existing robotic arm capable of performing telescopic and / or lateral and / or longitudinal displacement adjustments on a horizontal plane, such as Figure 3 As shown, in the embodiment of the present invention, a link robotic arm is used, which includes a first link and a second link. One end of the first link is pivotally connected to a fixed point, and the other end is pivotally connected to the second link. The first link can rotate around the fixed point as the center, and the second link can rotate around the other end of the first link as the center, so as to realize the position adjustment on the horizontal plane. The background light source 412 provides light from the back of the financial document from bottom to top. Under the action of the high-brightness background light, the light transmittance of the wrinkled part is relatively low, and the presence of wrinkles on the financial document is judged secondly according to the difference between the wrinkled part and the flat part. When the background light source 412 is not working, it will automatically retract to a set hidden position on one side, and the horizontal height of the background light source 412 is lower than the horizontal height of the highest stroke end point of the lifting rod. In addition, the background light source 412 uses multi-color LED lights to provide multi-color background light for the financial document. Based on the multi-color compensation scanning method, different bands and wavelengths are provided by different color lights to scan the information on the financial document, and the information obtained by each scan is subjected to gray-scale recognition and modeling, and the determined financial document information is obtained by matching with the image data of the standard characters.

[0017] When the financial document is placed on the financial document placement platform 1, the LED lamp array is turned on, and the CCD camera starts to collect image information. The gray-scale conversion unit 44 converts the collected picture into gray-scale, and judges whether there are wrinkles on the financial document according to the gray-scale value. If there are wrinkles on the financial document, then a part on the backlight side of the wrinkles will produce a shadow under the unilateral light provided by the LED lamp array. The pixel gray-scale values of the gray-scale picture are compared according to the set gray-scale threshold, and it is preliminarily judged whether there are wrinkles on the financial document based on the judgment condition that the pixel gray-scale value of the wrinkle position is higher than the set gray-scale threshold.

[0018] If it is preliminarily judged that there are wrinkles on the financial document, then the financial document adsorption adjustment component 2 is adjusted according to the position of the financial document, that is, by adjusting the rotation angles of the third rotating component 23 and the fourth rotating component 24, the four first adsorption components 26 are made to face the four top corners of the financial document, and then the first adsorption components 26 are started to adsorb the financial document, and the lifting rod is driven to lift the financial document.

[0019] Next, the background light source 412 extends from the hidden position on one side through the lateral telescopic component, and moves to below the wrinkled position through the cooperation of the lateral telescopic arm and the longitudinal guide rail, providing high-brightness background light for the wrinkled position. Under the action of the high-brightness background light, the light transmittance of the crease or folding part is relatively low. By collecting the financial voucher image under the background light again, it can be accurately judged whether there is a wrinkle on the financial voucher through gray-scale recognition. To avoid the problem of affecting the positioning accuracy due to the precision of the hardware device, after the background light source 412 is positioned below the wrinkled position, it can also move in a small range along a set trajectory around the positioning point through the cooperation of the lateral telescopic arm and the longitudinal guide rail.

[0020] When it is determined that there is a wrinkle on the financial voucher, the second rotating component 22 of the financial voucher adsorption and adjustment component 2 drives the wrinkled financial voucher to rotate towards the flat rolling roller assembly 3, and sends the financial voucher to the input port of the flat rolling roller assembly 3. The second adsorption component 33 arranged between the two rolling conveyor belts adsorbs the financial voucher conveyed by the financial voucher adsorption and adjustment component 2 towards the roller direction and sends it between the two roller groups, and the wrinkled part is flattened through the surface contact between the two roller groups.

[0021] Through the financial voucher adsorption and adjustment component 2 of the present invention, the stacked financial vouchers can be lifted one by one and sent into the flat rolling roller assembly 3, so that the wrinkled financial vouchers in the stacked financial vouchers can be rolled and flattened, which is convenient for subsequent other operations on the financial vouchers. At the same time, the unilateral light emitted by the LED light array arranged on one side of the financial voucher placement platform 1 makes the part of the backlight side of the wrinkle on the financial voucher produce a shadow under the unilateral light provided by the LED light array. After the image collected by the image acquisition unit 42 is subjected to gray-scale conversion, the pixel gray-scale value of the wrinkled position is higher than that of the flat position; according to the set gray-scale threshold, the pixel gray-scale values of the gray-scale image are compared. Based on the judgment condition that the pixel gray-scale value of the wrinkled position is higher than the set gray-scale threshold, it is thus judged whether there is a wrinkle on the financial voucher, and the wrinkle on the financial voucher is rolled flat through the surface contact rolling formed by the flat rolling roller assembly 3 to obtain a flat financial voucher.

[0022] The specific embodiments of the present invention described above do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An intelligent financial voucher sorting device, characterized in that It includes a financial voucher placement platform, a financial voucher adsorption and adjustment component arranged directly above the financial voucher placement platform, and a flattening roller assembly arranged on one side of the financial voucher placement platform; The financial voucher adsorption and adjustment component includes a first rotating component, a second rotating component, a third rotating component, a fourth rotating component, a first telescopic component, and a first adsorption component; the first rotating component can perform self-axis rotation around a vertical axis; the second rotating component is provided with a planar base, and a rotating hinge end extends vertically upward from the center position of the planar base. The rotating hinge end is hinged to the first rotating component and can rotate around a horizontal axis towards the flattening roller assembly side; one end of the third rotating component rotates around a base axis perpendicular to the planar base, and the other end is hinged to the fourth rotating component; the fourth rotating component includes a first branch and a second branch arranged perpendicular to each other. The free end of the first branch is hinged to the other end of the third rotating component and can rotate around the base axis. The second branch extends along the base axis and is provided with a first guide rail arranged parallel to the base axis; the first telescopic component includes a lifting rod slidably sleeved on the first guide rail through a slider, and the first adsorption component is fixedly arranged at the lower end of the lifting rod; The flattening roller assembly includes two roller groups arranged opposite to each other up and down. Each roller group includes at least one set of rolling conveyor belts. The roller shafts of the rolling conveyor belts are arranged parallel to the side of the flattening roller assembly corresponding to the financial voucher placement platform, and the conveying direction of the rolling conveyor belts is perpendicular to the length extension direction of the roller shafts; One of the two roller groups includes two rolling conveyor belts arranged parallel to each other in the horizontal direction. A second adsorption component is arranged between the two rolling conveyor belts, and the adsorption port of the second adsorption component faces the side of the financial voucher placement platform.

2. An intelligent financial voucher sorting system based on multi-band grayscale recognition, characterized in that It includes the financial voucher intelligent sorting device described in claim 1 and an image recognition module. The image recognition module includes a lighting unit, a picture acquisition unit, a position recognition unit, a grayscale conversion unit, and a grayscale judgment unit. The lighting unit includes an ambient light source, and the ambient light source is an LED lamp array arranged on one side of the financial voucher placement platform; the picture acquisition unit is arranged above the financial voucher placement platform and is used for image acquisition of the financial vouchers on the financial voucher placement platform. The position recognition unit is used to identify the position of the financial vouchers according to the pre-stored shape and size and in combination with a three-dimensional coordinate system. The grayscale conversion unit is used to convert the acquired pictures into grayscale pictures, and the grayscale judgment unit is used to compare the pixel grayscale values of the grayscale pictures according to the set grayscale threshold, and judge whether there are wrinkles on the financial vouchers based on the judgment condition that the pixel grayscale values at the wrinkle positions are higher than the set grayscale threshold.

3. The intelligent financial voucher sorting system based on multi-band grayscale recognition according to claim 2, characterized in that The lighting unit further includes a background light source arranged in the direction of the light source. The background light source is arranged on a horizontal adjustment arm.

4. The intelligent sorting system for financial vouchers based on multi-band grayscale recognition according to claim 3, wherein, The horizontal height at the highest stroke end of the lifting rod is higher than the horizontal height of the background light source.

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