A device for use in a paper currency authentication machine having a visible light reflection and infrared emission acquisition imaging recognition sensor
By combining infrared emission and photosensitive receiving sensors with AI learning, the problem of high cost or inaccurate recognition in existing banknote identification machines has been solved, achieving low-cost and high-accuracy banknote recognition.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGXING MINGRUI ELECTRONICS CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-06-23
AI Technical Summary
Among existing banknote identification equipment, high-end equipment is expensive but highly accurate, while low-end equipment is unstable or inaccurate, making it difficult to improve the accuracy of banknote identification while maintaining low cost.
It employs a combination of infrared emitting sensors and photosensitive receiving sensors, including a visible light emitting part, a photosensitive receiving part, and a bracket. It acquires images through infrared transmission and visible light reflection, and combines them with the CPU system's AI learning to perform feature comparison, thereby identifying the denomination, version, orientation, and authenticity of banknotes.
While maintaining low costs, it improves the recognition accuracy of banknote identification equipment, enabling it to accurately identify banknote denominations, versions, orientations, and authenticity.
Smart Images
Figure CN224399897U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of banknote identification equipment (including banknote counters, banknote verification machines, and banknote sorting machines). Background Technology
[0002] Banknote authentication machines (such as banknote counters) are mechatronic devices that count banknotes, identify denominations, accumulate amounts, and identify counterfeit currency. Currently, some banknote authentication machines (such as banknote counters) both domestically and internationally are equipped with CIS (Corporate Image Sensor) sensors or sensors composed of multiple phototubes. These offer high stability in identifying denominations and counterfeit currency, but this increases the equipment cost. Lower-end machines, on the other hand, lack CIS image sensors or sensors composed of multiple phototubes. These lower-end machines suffer from problems such as inability to identify denominations, inaccurate identification, and unstable counterfeit currency detection.
[0003] In view of the above situation, it is necessary to design a banknote identification device with visible light reflection and infrared emission acquisition imaging recognition sensors to solve the problems existing in the use of the above-mentioned existing technologies. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device with a reasonable structure that improves the accuracy of banknote recognition while maintaining a low production cost of banknote identification equipment. This device has visible light reflection and infrared emission acquisition imaging recognition sensors.
[0005] To solve the aforementioned technical problems, this utility model adopts the following technical solution:
[0006] A device for use in banknote authentication machines, characterized by having visible light reflection and infrared emission acquisition imaging sensors, is characterized by comprising infrared emission sensors and photosensitive receiving sensor assemblies respectively disposed above and below the banknote channel of the banknote authentication machine, wherein:
[0007] The infrared emission sensor includes an infrared circuit board and multiple infrared emission tubes arranged in a row on the infrared circuit board.
[0008] The photosensitive receiving sensor assembly includes a visible light emitting part, a photosensitive receiving part, and a bracket; the visible light emitting part includes a visible light circuit board and at least one row of visible light emitting tubes disposed on the visible light circuit board; the photosensitive receiving part includes a photosensitive receiving circuit board and at least one row of photosensitive tubes disposed on the photosensitive receiving circuit board; the photosensitive tubes are directly opposite the infrared emitting tubes; the bracket has a row of elliptical light-transmitting slots corresponding one-to-one with the photosensitive tubes on the photosensitive receiving circuit board; the bracket has an inwardly inclined slope on the upper surface located on one or both sides of the light-transmitting slot; after the bracket is disposed on the photosensitive receiving circuit board, each light-transmitting slot is fitted over a corresponding photosensitive tube; the visible light circuit board is disposed on the inclined surface located on one side of the light-transmitting slot of the bracket.
[0009] In an improved version of the above-mentioned device for banknote identification with visible light reflection and infrared emission acquisition imaging recognition sensors, the number of photosensitive tubes in the photosensitive receiving sensor assembly is 48-119, and the center distance between adjacent photosensitive tubes is 1.5-4.5mm.
[0010] In an improved version of the above-mentioned device for banknote identification equipment, which has a visible light reflection and infrared emission acquisition imaging recognition sensor, the receiving wavelength of the phototube is 380-1100 nanometers.
[0011] In an improved version of the device with visible light reflection and infrared emission acquisition imaging recognition sensor used in banknote identification equipment, the number of phototubes is 48-119.
[0012] Compared with existing technologies, the advantages of this invention are as follows: By using a combination of an infrared emitting sensor and a photosensitive receiving sensor assembly to replace the more expensive image recognition CIS sensor, the photosensitive receiving sensor assembly includes a visible light emitting part, a photosensitive receiving part, and a support. The infrared emitting tube of the infrared emitting sensor emits infrared light onto the banknote passing through the banknote channel, and after passing through the banknote, the photosensitive tube of the photosensitive receiving part receives the optical signal of the banknote's transmitted pattern. The light emitted by the visible light emitting tube is emitted onto the banknote passing through the banknote channel and reflected, and after being reflected, the photosensitive tube of the photosensitive receiving part receives the optical signal of the banknote's reflected pattern. The photosensitive tube scans, acquires, and images an infrared transmitted image and a visible light reflected image. These two images are then linked for CPU system AI learning and feature comparison, thereby accurately identifying the banknote's denomination, version, orientation, size, and authenticity. Thus, by using visible light reflection and infrared emission to acquire and image the banknote, the recognition sensor can more accurately identify and authenticate banknotes. Therefore, the structure of this invention is reasonable, improving the accuracy of banknote recognition while maintaining a low production cost for banknote authentication equipment.
[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: Attached Figure Description
[0014] Figure 1 This is a schematic diagram showing the position of the present invention installed on a banknote counter.
[0015] Figure 2 This is a schematic diagram of the overall structure of the infrared emitting sensor and photosensitive receiving sensor assembly of this utility model;
[0016] Figure 3 This is a front view of the infrared emitting sensor of this utility model;
[0017] Figure 4 This is an exploded view of the photosensitive receiving sensor assembly of this utility model;
[0018] Figure 5 This is a three-dimensional schematic diagram of the photosensitive receiving sensor assembly of this utility model;
[0019] Figure 6 This is a side view of the photosensitive receiving sensor assembly of this utility model;
[0020] Figure 7 This is a longitudinal sectional view of the infrared emitting sensor and photosensitive receiving sensor assembly of this utility model. Detailed Implementation
[0021] This utility model relates to a device with visible light reflection and infrared emission acquisition imaging sensors used in banknote authentication machines, such as... Figures 1 to 7 As shown, it includes an infrared emitting sensor 1 and a photosensitive receiving sensor assembly 2 respectively disposed above and below the banknote channel 51 of the banknote authentication machine 5, wherein:
[0022] The infrared emission sensor 1 includes an infrared circuit board 11 and a plurality of infrared emission tubes 12 arranged in a row on the infrared circuit board 11.
[0023] The photosensitive receiving sensor assembly 2 includes a visible light emitting part 21, a photosensitive receiving part 22, and a bracket 23; the visible light emitting part 21 includes a visible light circuit board 211 and at least one row of visible light emitting tubes 212 disposed on the visible light circuit board 211; the photosensitive receiving part 22 includes a photosensitive receiving circuit board 221 and at least one row of photosensitive tubes 222 disposed on the photosensitive receiving circuit board 221; the photosensitive tubes 222 are directly opposite the infrared emitting tubes 12; the bracket 23 is provided with a row of elliptical light-transmitting grooves 231 corresponding one-to-one with the photosensitive tubes 222 on the photosensitive receiving circuit board 221; the bracket 23 has an inwardly inclined slope 232 on the upper surface located on one or both sides of the light-transmitting groove 231; the bracket 23 Each light-transmitting groove 231 is fitted onto a corresponding photosensitive tube 222 after being mounted on the photosensitive receiving circuit board 221. The visible light circuit board 211 is mounted on an inclined surface 232 on one side of the light-transmitting groove 231 of the bracket 23. With the help of the inclined surface 232, the visible light emitted by the visible light emitting tube 212 is directed onto the banknote and refracted, and then received by the photosensitive tube 222. Since it is very simple and easy to process the inclined surface 232 on the bracket 23, the installation method of the visible light emitting part can be simplified, thereby reducing the cost. The light-transmitting groove is elliptical, and its major axis is in the length direction of the bracket 23. This can both block the interference light of the visible light and ensure that the transmitted infrared light and the refracted visible light can be fully received by the photosensitive tube.
[0024] The infrared emitting tube emits infrared light that strikes the banknote passing through the banknote channel. After passing through the banknote, the optical signal of the transmitted pattern is received by the photosensitive tube of the photosensitive receiving part. The visible light emitting tube emits light that strikes the banknote passing through the banknote channel and is reflected. The optical signal of the reflected pattern is received by the photosensitive tube of the photosensitive receiving part. The photosensitive tube scans, collects, and images an infrared transmitted image and a visible light reflected image. The two images are then linked for CPU system AI learning and feature comparison to accurately identify the banknote denomination, version, orientation, size, and authenticity.
[0025] In this embodiment, the photosensitive receiving sensor assembly has 48-119 phototubes, and the center-to-center distance between adjacent phototubes is 1.5-4.5 mm; the receiving wavelength of the phototubes is 380-1100 nanometers. Preferably, the photosensitive receiving sensor assembly has 48-119 phototubes.
[0026] In the description of this utility model, it should be understood that terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0027] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.
Claims
1. A device for use in banknote authentication machines, characterized by having visible light reflection and infrared emission acquisition imaging sensors, wherein... This includes infrared emitting sensors and photosensitive receiving sensor assemblies respectively located above and below the banknote channel of the banknote authentication machine, wherein: The infrared emission sensor includes an infrared circuit board and multiple infrared emission tubes arranged in a row on the infrared circuit board. The photosensitive receiving sensor assembly includes a visible light emitting part, a photosensitive receiving part, and a bracket; the visible light emitting part includes a visible light circuit board and at least one row of visible light emitting tubes disposed on the visible light circuit board; the photosensitive receiving part includes a photosensitive receiving circuit board and at least one row of photosensitive tubes disposed on the photosensitive receiving circuit board; the photosensitive tubes are directly opposite the infrared emitting tubes; the bracket has a row of elliptical light-transmitting slots corresponding one-to-one with the photosensitive tubes on the photosensitive receiving circuit board; the bracket has an inwardly inclined slope on the upper surface located on one or both sides of the light-transmitting slot; after the bracket is disposed on the photosensitive receiving circuit board, each light-transmitting slot is fitted over a corresponding photosensitive tube; the visible light circuit board is disposed on the inclined surface located on one side of the light-transmitting slot of the bracket.
2. The device with visible light reflection and infrared emission acquisition imaging recognition sensors used in banknote authentication machines according to claim 1, characterized in that, The photosensitive receiving sensor assembly has 48-119 photosensitive tubes, and the center distance between adjacent photosensitive tubes is 1.5-4.5mm.
3. A device with visible light reflection and infrared emission acquisition imaging recognition sensors for use in banknote authentication machines according to claim 1 or 2, characterized in that, The phototube has a receiving wavelength of 380-1100 nanometers.
4. The device with visible light reflection and infrared emission acquisition imaging recognition sensor used in banknote authentication equipment according to claim 3, characterized in that, The number of phototubes is 48-119.