High-precision image acquisition system for sorter
By introducing a high-precision image sensor and acquisition circuit board into the sorting machine, and using ADC, FPGA and DSP chips to process image signals, the problem of insufficient image acquisition accuracy of the sorting machine is solved, realizing high-precision image acquisition and anti-counterfeiting identification, and improving detection accuracy and stability.
Patent Information
- Application Number
- CN202520261448.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-18
AI Technical Summary
The existing banknote sorting machines lack sufficient precision in capturing banknote images, making it impossible to accurately identify and analyze each counterfeit note, resulting in insufficient accuracy in counterfeit detection.
It employs a high-precision image sensor and acquisition circuit board, including an ADC chip, an FPGA chip, and a DSP chip. The ADC chip converts the image signal into a digital signal, the FPGA chip processes it to form a high-precision image signal, and the DSP chip analyzes and processes it to achieve high-precision image acquisition and anti-counterfeiting identification.
It improves the accuracy of banknote detection in the sorting machine, can clearly display image features, effectively avoid external light interference, and achieve fast and accurate anti-counterfeiting feature analysis.
Smart Images
Figure CN223743116U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a clearing machine technical field especially is related to a high accuracy image acquisition system for clearing machine. BACKGROUND
[0002] In order to improve the anti-fake technology of clearing machine, improve the identification accuracy, meet the needs of market, realize the zero tolerance to counterfeit money, need to collect the high accuracy image of paper money and carry out feature analysis.
[0003] But the image precision of the existing clearing machine to the paper money collection is not enough, cannot reach the accurate identification and analysis to each feature of each counterfeit money, and then discerns each counterfeit money.
[0004] In view that above reason, the utility model provides a high accuracy image acquisition system for clearing machine to solve above technical problem. UTILITY MODEL CONTENTS
[0005] The utility model is directed to provide a high accuracy image acquisition system for clearing machine, the system can realize the collection of high accuracy image, is applicable to the high definition image collection and anti-fake identification of paper money of clearing machine.
[0006] The utility model provides a high accuracy image acquisition system for clearing machine, it includes: high accuracy image sensor and acquisition circuit board, be provided with ADC chip, FPGA chip and DSP chip on the acquisition circuit board, the ADC chip is used for receiving the original image signal of high accuracy image sensor transmission, the output of ADC chip is connected with FPGA chip, the ADC chip and FPGA chip are used to process original image signal, form the high accuracy image signal required, the output of FPGA chip is connected with DSP chip, can transmit high accuracy image signal to DSP chip, and the DSP chip is used to analyze and process data.
[0007] Preferably, it further includes adapter plate, and the high accuracy image sensor is connected with the ADC chip through the adapter plate.
[0008] Preferably, the high accuracy image sensor is arranged in the paper money conveying channel.
[0009] Preferably, the high accuracy image sensor adopts six-section multi-light source reflection CIS sensor.
[0010] Preferably, the high accuracy image sensor is arranged in the paper money conveying channel.
[0011] Preferably, the output of FPGA chip is connected with the DSP chip through general purpose parallel port.
[0012] Preferably, the ADC chip is used for converting the image signal collected by the high-precision image sensor into a digital signal and outputting to the FPGA chip.
[0013] Preferably, the FPGA chip is used for data processing and timing control to form the required high-precision image signal.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] 1, the utility model discloses a high-precision image sensor and collection circuit board carry out high-precision image collection, and the high-precision image that the collection can clearly show some features on the image can be applied to the feature detection on the banknote face, and the high-precision image collection system can also effectively avoid the interference of outside light, improve the detection precision.
[0016] 2, the utility model discloses a new structure high-precision sensor collection system can detect some features in the fixed area of banknote face, and also can effectively avoid the interference of outside light, can accurately and quickly analyze the anti-fake feature of the whole banknote, improve the detection precision. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0018] Figure 1 It is the structural schematic diagram of the utility model;
[0019] Figure 2 It is the use state diagram of the utility model;
[0020] Figure 3 It is the circuit diagram of ADC chip in the utility model;
[0021] Figure 4 It is the partial circuit diagram of FPGA chip in the utility model;
[0022] Mark explanation of drawing:
[0023] 1: first high-precision image sensor;2: second high-precision image sensor;3: banknote. EMBODIMENT
[0024] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments, obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the scope of protection of the present utility model.
[0025] In the description of the present utility model, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model.
[0026] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited. In addition, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.
[0027] As Figures 1-2 shown, the present utility model provides a kind of high-precision image acquisition system for clearing machine, including: high-precision image sensor and acquisition circuit board, acquisition circuit board is provided with ADC chip, FPGA chip and DSP chip, wherein, ADC chip is used to receive the original image signal transmitted by the high-precision image sensor, the output of ADC chip is connected with FPGA chip, ADC chip and FPGA chip are used to process original image signal, form the high-precision image signal required, the output of FPGA chip is connected with DSP chip, can transmit high-precision image signal to DSP chip, and DSP chip is used to analyze and process data.
[0028] The high-precision image sensor is connected with the ADC chip through an adapter plate, the collected image signal is processed and various timing controls by the ADC chip (analog-to-digital converter chip) and the FPGA chip (field-programmable gate array chip), the ADC chip is used for converting the image signal collected by the high-precision image sensor into a digital signal and outputting to the FPGA chip, the FPGA chip processes the original image data read in to form the required high-precision image signal, and the output end of the FPGA chip is connected with the DSP chip through a universal parallel port (UPP) to output data to the DSP chip (digital signal processing chip) for subsequent processing work.
[0029] As shown in Figure 2 The high-precision image sensor adopts a six-segment multi-light source reflection CIS sensor, and the high-precision image sensor is arranged in the paper currency conveying channel, and the number thereof is two, that is, the first high-precision image sensor 1 arranged above the paper currency channel and the second high-precision image sensor 2 arranged below the paper currency channel, the first high-precision image sensor 1 and the second high-precision image sensor 2 can simultaneously collect high-precision images of the front and back of the paper currency, and the collected images can clearly display the anti-counterfeit features of the paper currency, and the collection circuit has good anti-interference performance.
[0030] As shown in Figure 3 , 4 The circuit principle of the utility model is as follows:
[0031] The analog signal of the high-precision image sensor collected by the CIS is converted into a digital signal by the ADC chip AK8455A, and the converted signal is output to the FPGA chip ZYNQ7010_CLG400, the main function of the FPGA chip is to control the collection timing of the high-precision sensor, control the analog-to-digital conversion of the ADC chip, store, convert, analyze and process the collected high-precision image data, and transmit the image signal converted by the FPGA to meet the subsequent processing requirements.
[0032] The high-precision image acquisition system can obtain high-precision images, can improve the accuracy of the paper currency anti-counterfeiting of the clearing machine, and has good anti-interference performance, accurate and stable detection effect, and the high-precision image of the paper currency collected by the high-precision image acquisition system can clearly obtain the anti-counterfeit features of the paper currency from the image, and the features can assist the identification of the authenticity of the paper currency.
[0033] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A high precision image acquisition system for a sorter, characterized in that, The application relates to a high-precision image sensor and a collecting circuit board, wherein an ADC chip, an FPGA chip and a DSP chip are arranged on the collecting circuit board; the ADC chip is used for receiving original image signals transmitted by the high-precision image sensor; the output end of the ADC chip is connected with the FPGA chip; the ADC chip and the FPGA chip are used for processing the original image signals to form required high-precision image signals; the output end of the FPGA chip is connected with the DSP chip; the high-precision image signals can be transmitted to the DSP chip; and the DSP chip is used for analyzing and processing data. The application further relates to an adapter plate, and the high-precision image sensor is connected with the ADC chip through the adapter plate.
2. The high precision image acquisition system for a sorter according to claim 1, characterized in that, The high-precision image sensor is arranged in a paper currency conveying channel.
3. The high precision image capture system for a sorter of claim 1, wherein, The high-precision image sensor adopts a six-segment multi-light-source reflection CIS sensor.
4. The high precision image acquisition system for a sorter of claim 3, wherein, The upper and lower parts of the paper currency channel are respectively provided with the high-precision image sensors, so that high-precision images of the front and back surfaces of the paper currency can be simultaneously collected.
5. The high precision image acquisition system for a sorter according to claim 4, characterized in that, The output end of the FPGA chip is connected with the DSP chip through a general-purpose parallel port.
6. The high precision image capture system for a sorter of claim 1, wherein, The ADC chip is used for converting the image signals collected by the high-precision image sensor into digital signals and outputting the digital signals to the FPGA chip.
7. The high precision image capture system for a sorter of claim 1, wherein, The FPGA chip is used for data processing and time sequence control to form required high-precision image signals.
8. The high precision image capture system for a sorter of claim 1, wherein,