CN109583916B - Electronic anti-counterfeiting tracing system based on bar codes - Google Patents
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Abstract
The invention discloses an electronic anti-counterfeiting tracing system based on a bar code, which mainly solves the technical problems of weak anti-counterfeiting capability, poor compatibility, high cost and complicated anti-counterfeiting identification operation in the prior art. The electronic anti-counterfeiting tracing system comprises a code assigning unit and a code checking unit, unique characteristic information is selected from a bar code through spiral modulation light, a secret code is generated based on the unique characteristic information, and the code is acquired in a verification link and is compared with the secret code to identify authenticity.
Description
Technical Field
The invention relates to the field of commodity anti-counterfeiting, in particular to an electronic anti-counterfeiting tracing system based on a bar code.
Background
A bar code (barcode) is a graphic identifier in which a plurality of black bars and spaces having different widths are arranged according to a certain coding rule to express a set of information. Common bar codes are a pattern of parallel lines of dark bars (simply bars) and white bars (simply spaces) of widely differing reflectivity. The bar code can mark many information such as the producing country, the manufacturer, the commodity name, the production date, the book classification number, the starting and stopping place of the mail, the class, the date and the like of the article, so the bar code is widely applied to many fields such as commodity circulation, book management, postal management, bank systems and the like.
The bar code-based commodity anti-counterfeiting technology is always the key point of anti-counterfeiting technology development, and is subject to a first-generation laser holographic color-changing ink technology, a second-generation digital anti-counterfeiting network query and a third-generation digital label texture technology. As for users, the three generations of anti-counterfeit technologies have the following problems: 1. the identification is difficult, the anti-counterfeiting technology is high, and consumers cannot identify or are difficult to identify, and can only identify the anti-counterfeiting product by professional technology or equipment; 2. additional processes such as labeling, coding, scanning and the like are needed in the process of modifying and implementing the production line, and the original production line needs to be changed; 3. the anti-counterfeiting packaging material is easy to copy and use, anti-counterfeiting technology or products are easy to copy, anti-counterfeiting packaging is reusable, and anti-counterfeiting effect is poor; 4. the use frequency is low, the anti-counterfeiting technology is hidden, the use frequency of consumers is low, and propaganda is lacked; 5. the cost is too high, the anti-counterfeiting cost is too high, and the products with low added values cannot bear the anti-counterfeiting cost. For the producers of commodities, the anti-counterfeiting technology of the commodities is expected to have high reliability, high economy and high compatibility, and the anti-counterfeiting technology is less in modification and convenient for interactive marketing, commodity data analysis and channel management on the basis of the existing production line; for the commodity distributor, the anti-counterfeiting technology is desired to be convenient to use and operate, the selling cost is not increased, and for the consumer, the consumer is desired to be capable of simply distinguishing the true from the false and distinguishing the true from the false before purchasing.
Patent document CN106960351A discloses a method and a system for merchandise anti-counterfeiting and verification and a barcode scanning device, wherein the merchandise anti-counterfeiting method comprises the following steps: the method comprises the steps of performing contact scanning on a bar code of a commodity, sampling the bar code of the commodity according to a preset pixel resolution ratio to simultaneously obtain the contact scanning on the bar code of the commodity, and sampling the bar code of the commodity according to the preset pixel resolution ratio to simultaneously obtain bar code information of the commodity and surface characteristic information of the bar code of the commodity; reconstructing the surface feature information into a plurality of two-dimensional or three-dimensional anti-counterfeiting digital images in a digital domain according to the space geometric relationship of each feature point in the surface feature information, and generating an anti-counterfeiting digital image set comprising the plurality of anti-counterfeiting digital images; establishing a commodity bar code database to store the bar code information and the anti-counterfeiting digital image set; and establishing an association relation between the bar code information of each commodity and the anti-counterfeiting digital image set in the commodity bar code database. In this technical solution, there are the following drawbacks: 1. contact scanning is adopted, so that the scanning speed is low; 2. the extracted characteristic information is reconstructed into a two-dimensional or three-dimensional anti-counterfeiting digital image, and the generated image occupies a large space, so that the database occupies a large storage space and the verification speed is seriously influenced.
Based on these practical requirements and the existing defects in the prior art, an electronic anti-counterfeiting tracing system with strong anti-counterfeiting capability, high compatibility, low cost and convenient anti-counterfeiting identification operation is urgently needed.
Disclosure of Invention
It is an object of the present invention to solve the problems of the prior art. Compared with the prior art, the invention provides an electronic anti-counterfeiting tracing system based on bar codes.
The invention also aims to provide an electronic anti-counterfeiting tracing method of the electronic anti-counterfeiting tracing system based on the bar code.
In order to solve one of the above technical problems, the technical scheme adopted by the invention is as follows:
an electronic anti-counterfeiting tracing system based on bar codes comprises a code assigning unit and a verification unit, wherein the code assigning unit comprises a light source, a spiral grating, a photoelectric detector, a computer processing system and a server unit; the authentication unit includes an imaging device, a remote server.
Further, the photodetector is connected to a computer, the computer is communicatively connected to the server unit, and the imaging device is communicatively connected to a remote server.
Further, the black bars on the commercial bar code are printed with magnetic ink.
Furthermore, light emitted by the light source is modulated by the spiral grating to form spiral modulation light, the spiral modulation light is in cross contact with black bars on the commodity bar code to form magneto-optical coupling points, the magnetism of the magneto-optical coupling points can be changed by irradiation of the spiral modulation light, so that the color of the magneto-optical coupling points is changed, and the spiral modulation light is reflected and received by the photoelectric detector after irradiating the bar code.
Further, the photoelectric detector identifies the bar code number and inputs the basic information of the commodity; a computer processing system captures a bar code picture and carries out gridding processing, wherein each grid corresponds to position coordinate information; through chromatographic analysis, a grid of a cross point of the spiral modulated light and the bar code is grabbed, and position information of the grid is encoded to form a secret code; and storing the basic information and the password information of the bar code in a server unit as a unique identification certificate of the bar code.
Further, in a verification link, acquiring bar code digital information by using imaging equipment; feeding back the bar code digital information to a remote server through a wireless/wired network, calling a corresponding database, and acquiring basic information of the commodity; capturing bar code image information and sending the bar code image information to a remote server; the remote server carries out gridding processing on the image, acquires the intersection point of the spiral line and the bar code on the image by using a chromatography and encodes the intersection point; comparing the code with the password in the remote server, finding out similar passwords and evaluating the similarity; if the similarity is larger than a certain threshold value, the feedback passes the verification; if the similarity is smaller than a certain threshold value, the feedback of the remote server is not verified.
To solve the second technical problem, the technical solution adopted by the present invention is as follows:
an electronic anti-counterfeiting tracing method of an electronic anti-counterfeiting tracing system based on bar codes is characterized by comprising the following steps:
(1) a code assigning link: the light emitted by the light source is modulated by the spiral grating to form spiral modulated light which is in cross contact with black bars on the commodity bar code to form magneto-optical coupling points, the magnetism of the magneto-optical coupling points can be changed by the irradiation of the spiral modulated light, so that the color of the magneto-optical coupling points is changed, and the spiral modulated light is reflected and received by the photoelectric detector after being irradiated on the bar code; the photoelectric detector identifies the bar code number and inputs the basic information of the commodity; a computer processing system captures a bar code picture and carries out gridding processing, wherein each grid corresponds to position coordinate information; through chromatographic analysis, a grid of a cross point of the spiral modulated light and the bar code is grabbed, and position information of the grid is encoded to form a secret code; storing the basic information and the password information of the bar code in a server unit as a unique identification certificate of the bar code;
(2) and (3) verification link: acquiring bar code digital information by using imaging equipment; feeding back the bar code digital information to a remote server through a wireless/wired network, calling a corresponding database, and acquiring basic information of the commodity; capturing bar code image information and sending the bar code image information to a remote server; the remote server carries out gridding processing on the image, acquires the intersection point of the spiral line and the bar code on the image by using a chromatography and encodes the intersection point; comparing the code with the password in the remote server, finding out similar passwords and evaluating the similarity; if the similarity is larger than a certain threshold value, the feedback passes the verification; if the similarity is smaller than a certain threshold value, the feedback of the remote server is not verified.
Has the advantages that:
the electronic anti-counterfeiting tracing system based on the bar code selects unique characteristic information from the bar code by spirally modulating light, generates the secret code based on the unique characteristic information, obtains the code in a verification link, and identifies authenticity by comparing the code with the secret code.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of a spiral modulated light beam impinging on a bar code to form a magneto-optical coupling spot.
Fig. 2 is a schematic diagram of a coding unit structure.
FIG. 3 is a schematic diagram of a code-checking unit structure.
Fig. 4 is a flow chart of the encoding process.
FIG. 5 is a flow chart of a code verification process.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings. It should be noted that the specific embodiments described herein are only for explaining the embodiments of the present invention, and are not used to limit the embodiments of the present invention.
A bar code (barcode) is a graphic identifier in which a plurality of black bars and spaces having different widths are arranged according to a certain coding rule to express a set of information. Common bar codes are a pattern of parallel lines of dark bars (simply bars) and white bars (simply spaces) of widely differing reflectivity. Generally, a bar code compiled according to a certain rule needs to be converted into meaningful information, and the bar code needs to go through two processes of scanning and decoding. The color of the object is determined by the type of the reflected light, the white object can reflect visible light with various wavelengths, and the black object absorbs visible light with various wavelengths, so that when the light emitted by the light source of the bar code scanner is reflected on the bar code, the reflected light irradiates the photoelectric converter in the bar code scanner, and the photoelectric converter converts the reflected light into corresponding electric signals according to the reflected light signals with different intensities. According to the difference of the principle, the scanner can be divided into four types, namely a light pen, a red CCD, laser and an image. The electrical signal is output to an amplifying circuit of the bar code scanner to enhance the signal, and then is sent to a shaping circuit to convert the analog signal into a digital signal. The widths of the white bars and the black bars are different, and the duration time of the corresponding electric signals is also different. The main function is to prevent the dead zone width from being insufficient. The decoder then determines the number of bars and spaces by measuring the number of pulsed digital electrical signals 0, 1. The width of the bars and spaces is discriminated by measuring the duration of the 0, 1 signal. At this time, the obtained data is still disordered, and if the information contained in the bar code is known, the bar code symbol is changed into corresponding numerical and character information according to the corresponding encoding rule (for example, EAN-8 code). Finally, the detailed information of the article is identified by the data processing and management of the computer system.
The method is characterized in that a spiral grating is adopted uniquely, light emitted by a light source irradiates a bar code after passing through the spiral grating, then characteristic information of a magneto-optical coupling point formed by the fact that light modulated by the spiral grating and the bar code are crossed is extracted to form a group of codes, in a verification link, a bar code image is obtained through imaging equipment such as a camera and the like and is sent to a server, the server conducts gridding processing on the image, the cross point of the spiral line and the bar code on the image is obtained through a chromatography method, the cross point is coded, the codes are compared with the secret codes in the server, similar secret codes are found out, and the similarity is evaluated. This takes into account the difficulty and unique uniqueness of the formed combination, and the difficulty of combination identification, significantly easier than complex digital image identification and combination storage, as well as unique identification capabilities.
As shown in fig. 1, for a bar code printed by magnetic ink, a spiral modulated light is irradiated onto the bar code, and when a point where the spiral modulated light is in cross contact with the bar code forms a magneto-optical coupling point, the magnetic property of the magneto-optical coupling point is changed by the irradiation of the spiral modulated light, thereby causing a change in color of the magneto-optical coupling point. The spiral modulated light is formed by modulating a light source after passing through a spiral grating, and the light source can be a common illuminating light source, such as an LED lamp and an incandescent lamp, but the light source does not form a lamp shadow when being projected on a common object. The magnetic printing ink (magnetic printing ink) is selected from magnetizable pigments, such as black iron oxide (Fe3O4) and brown iron oxide (Fe2O3), and the particles are mostly needle-shaped crystals with the diameter less than 1 μm. The magnetic ink is widely applied in the aspects of classification, retrieval, identification and the like of bank notes and postal services, and can be made into magnetic lead printing ink, magnetic offset printing ink and other varieties. The magnetic ink has a Magneto-optical effect (Magneto-optical effect) which refers to various phenomena caused by interaction between light and a substance in a magnetic field or between light and a substance having spontaneous magnetization. When light rays are emitted from different angles, the interference and refraction of light rays on various layers and different directions generate flowing reflection at different viewing angles through the magneto-optical effect, so that the color change of the magnetic ink irradiated by the spiral modulation light rays is seen.
As shown in fig. 2-3, an electronic anti-counterfeiting tracing system based on bar codes comprises a coding unit and a verification unit. As shown in fig. 2, the code assigning unit includes a light source, a spiral grating, a photodetector, a computer processing system, and a server unit; as shown in fig. 3, the authentication unit includes an imaging device, a remote server. The spiral modulation light modulated by the spiral grating is in cross contact with the black bars on the commodity bar code to form magneto-optical coupling points, and the black bars are printed by magnetic ink, so that the magnetism of the magneto-optical coupling points can be changed by irradiation of the spiral modulation light, and the color of the magneto-optical coupling points is changed. The spiral modulation light irradiates the bar code and is reflected and received by the photoelectric detector, the reflected light received by the photoelectric detector comprises light emitted by the magneto-optical coupling point and light reflected by other points, and the color of the magneto-optical coupling point changes after the spiral modulation light irradiates, so that the light reflected by the magneto-optical coupling point is different from the light emitted by other points, and the characteristic information is contained. The photoelectric detector identifies the bar code number through the received light reflected by other points, and acquires the basic information of the commodity. The photoelectric detector is connected with the computer, and meanwhile, the computer is in communication connection with the local/remote server, because when the number of input commodities is large, the computing and processing capabilities of the computer are slightly insufficient, the storage and processing are required to be carried out through the local/remote server, and the computer can be selected from an industrial personal computer. In the verification link shown in fig. 3, the user aligns the barcode of the commodity with an imaging device such as a camera to capture an image, and transmits the image to a remote server via a wired/wireless network for comparison and verification. The imaging device generally can be a camera of a portable electronic device such as a mobile phone, a PAD, a notebook computer and the like, and can also be a professional camera for shooting. The remote server of the verification end stores the password information acquired in the code assigning stage. Generally, the imaging device selects a camera of a portable electronic device such as a mobile phone or a PAD, and the taken picture information is directly transmitted to a remote server through a wired/wireless network by a client of the mobile phone or the PAD.
As shown in fig. 4, the encoding process is as follows: the light source emits light, the light is modulated by the spiral grating to form spiral modulated light, the spiral modulated light irradiates on a bar code label of a commodity and is reflected by the surface of the bar code to enter the photoelectric detector; the photoelectric detector identifies the bar code number and inputs the basic information of the commodity; the computer captures a bar code picture and carries out gridding treatment, and each grid corresponds to position coordinate information; through chromatographic analysis, a grid of a cross point of the spiral modulated light and the bar code is grabbed, and position information of the grid is encoded to form a secret code; and storing the basic information and the password information of the bar code in a server as a unique identification certificate of the bar code. The computer extracts only the grids at the intersection points of the spiral modulated light and the bar code and codes the position information of the grids to form the secret code, obviously, the grid positions have the uniqueness of the commodity information, the bar code shape of each commodity has the uniqueness, the grids at the intersection points of the spiral modulated light and the bar code also have the uniqueness, and therefore, the position information of the grids also has the uniqueness, and the secret code formed after coding also has the uniqueness.
As shown in fig. 5, the code verification process is as follows: acquiring bar code digital information by using imaging equipment such as a camera; feeding back the bar code digital information to a server through a wireless/wired network, calling a corresponding database, and acquiring basic information of the commodity; capturing bar code image information and sending the bar code image information to a server; the server carries out gridding processing on the image, acquires the intersection point of the spiral line and the bar code on the image by utilizing chromatography, and codes the intersection point; comparing the code with the password in the server, finding out similar passwords and evaluating the similarity; if the similarity is larger than a certain threshold value, the feedback passes the verification; if the similarity is smaller than a certain threshold value, the server feedback is not verified.
In the coding process, the photoelectric detector sends the received reflected light to a computer processing system, the computer processing system amplifies the size of the whole interval of the bar code to a pixel level, records coordinate positions for all the whole pixel points, compares the feature values of the pixel points of all sine line tracks by setting the feature values, records the coordinate positions of the pixel points if the feature values are consistent with the features (the color is changed), calculates a group of nonrepetitive codes (black codes) according to the serial number (segment number) of the sine line and the content of the bar code after the features of the pixels of all specific point positions on the sine line are completely compared, and stores the nonrepetitive codes (black codes) to a server.
Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.
Claims (4)
1. An electronic anti-counterfeiting tracing system based on bar codes comprises a code assigning unit and a verification unit, wherein the code assigning unit comprises a light source, a spiral grating, a photoelectric detector, a computer processing system and a server unit; the verification unit comprises imaging equipment and a remote server, wherein black bars on the commodity bar code are printed by magnetic ink, light emitted by a light source is modulated by a spiral grating to form spiral modulation light, the spiral modulation light is in cross contact with the black bars on the commodity bar code to form a magneto-optical coupling point, the magnetism of the magneto-optical coupling point can be changed by irradiation of the spiral modulation light, so that the color of the magneto-optical coupling point is changed, the spiral modulation light is reflected after being irradiated on the bar code and is received by a photoelectric detector, the photoelectric detector identifies the bar code number, and basic commodity information is recorded; a computer processing system captures a bar code picture and carries out gridding processing, wherein each grid corresponds to position coordinate information; through chromatographic analysis, a grid of a cross point of the spiral modulated light and the bar code is grabbed, and position information of the grid is encoded to form a secret code; and storing the basic information and the password information of the bar code in a server unit as a unique identification certificate of the bar code.
2. The electronic anti-counterfeiting traceability system based on bar codes as claimed in claim 1, wherein: the photoelectric detector is connected with a computer, the computer is in communication connection with the server unit, and the imaging device is in communication connection with the remote server.
3. The electronic anti-counterfeiting traceability system based on bar codes as claimed in claim 1, wherein: in the verification link, acquiring bar code digital information by using imaging equipment; feeding back the bar code digital information to a remote server through a wireless/wired network; capturing bar code image information and sending the bar code image information to a remote server; the remote server carries out gridding processing on the image, acquires the intersection point of the spiral line and the bar code on the image by using a chromatography and encodes the intersection point; comparing the code with the password in the remote server, and evaluating the similarity; if the similarity is larger than the threshold value, the feedback is verified; if the similarity is less than the threshold, the remote server feedback is not verified.
4. An electronic anti-counterfeiting tracing method of the electronic anti-counterfeiting tracing system based on the bar codes according to any one of claims 1 to 3, characterized by comprising the following steps:
(1) a code assigning link: the light emitted by the light source is modulated by the spiral grating to form spiral modulated light which is in cross contact with black bars on the commodity bar code to form magneto-optical coupling points, the magnetism of the magneto-optical coupling points can be changed by the irradiation of the spiral modulated light, so that the color of the magneto-optical coupling points is changed, and the spiral modulated light is reflected and received by the photoelectric detector after being irradiated on the bar code; the photoelectric detector identifies the bar code number and inputs the basic information of the commodity; a computer processing system captures a bar code picture and carries out gridding processing, wherein each grid corresponds to position coordinate information; through chromatographic analysis, a grid of a cross point of the spiral modulated light and the bar code is grabbed, and position information of the grid is encoded to form a secret code; storing the basic information and the password information of the bar code in a server unit as a unique identification certificate of the bar code;
(2) and (3) verification link: acquiring bar code digital information by using imaging equipment; feeding back the bar code digital information to a remote server through a wireless/wired network; capturing bar code image information and sending the bar code image information to a remote server; the remote server carries out gridding processing on the image, acquires the intersection point of the spiral line and the bar code on the image by using a chromatography and encodes the intersection point; comparing the code with the password in the remote server, and evaluating the similarity; if the similarity is larger than the threshold value, the feedback is verified; if the similarity is less than the threshold, the remote server feedback is not verified.
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| CN110533704B (en) * | 2019-07-22 | 2022-11-11 | 杭州沃朴物联科技有限公司 | Method, device, equipment and medium for identifying and verifying ink label |
| CN111445268B (en) * | 2020-03-29 | 2021-09-21 | 台州市黄岩金多塑业有限公司 | Printing ink tracing method based on block chain and 5G communication |
| CN114656965B (en) * | 2022-04-13 | 2023-09-08 | 国家纳米科学中心 | Up-conversion near-infrared circularly polarized luminescent material and preparation method and application thereof |
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| CN1185617A (en) * | 1996-12-19 | 1998-06-24 | 田景华 | Method for using modulated colour dispersion spectrum to represent multiple digital signal and application thereof |
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