CN104123526A - Magnetic anti-counterfeiting system and method - Google Patents
Magnetic anti-counterfeiting system and method Download PDFInfo
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- CN104123526A CN104123526A CN201410361664.0A CN201410361664A CN104123526A CN 104123526 A CN104123526 A CN 104123526A CN 201410361664 A CN201410361664 A CN 201410361664A CN 104123526 A CN104123526 A CN 104123526A
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Abstract
The invention discloses a magnetic anti-counterfeiting system. The magnetic anti-counterfeiting system comprises a magnetic sensor and a graph processing module, wherein the magnetic sensor comprises a plurality of magnetic sensing units and a circuit module, the magnetic sensing units are used for detecting magnetic signals of magnetic materials of anti-counterfeiting objects, and the circuit module is used for processing output signals of the magnetic sensing units and outputting corresponding graph signals; the graph processing module comprises a graph identification unit and a processor, the graph identification unit is used for receiving the graph signals and converting graph signals into bar codes and/or two-dimension codes, and the processor is used for receiving the bar codes and/or two-dimension codes or decoding the bar codes and/or two-dimension codes to obtain authenticity results. The magnetic anti-counterfeiting system can decode the graph signals composed of the bar codes/or dimension codes, which cannot be identified through naked eyes or optical instruments, to obtain the results, thereby increasing anti-counterfeiting difficulty of the anti-counterfeiting objects and the anti-counterfeiting system and improving anti-counterfeiting degree.
Description
Technical field
The present invention relates to false proof area of security, particularly a kind of magnetic anti-counterfeit system and method.
Background technology
In daily life, the application of magnetic secrecy technology is very extensive, as the bonding jumper in bank card, check, classified document, banknote, supermarket commodity and library etc., all containing magnetisable material maintains secrecy for false proof, existing magnetic secrecy technology is to use magnetic head to do rough scanning to the privacy amplification region of the object that uses magnetic secrecy technology, obtains simple magnetic signal waveform and again signal analysis is reached to secret object.As one of banknote section of magnetic strips, these fairly simple secret figures of row's magnetic ink character of check, be not difficult to find out, existing magnetic secrecy technology simply and is very easily faked, in the face of more and more advanced false making technology can not realize secret effect effectively.
Bar code and Quick Response Code are widely used in web site url as a kind of product false proof and the technology of tracing to the source, advertisement pushing, and data are downloaded, commodity transaction, the fields such as information transmission.Bar code and Quick Response Code have adopted high density coding, can hold thousands of capitalizations or numeral or byte, are tens times of common bar code information capacity.So large quantity of information can convert Quick Response Code to the content of more kinds of patterns by let us, by scanning, propagates more large information capacity.If but adopt common bar code and Quick Response Code figure, due to conventional resolution ratio of camera head and precision limited, the cost of therefore conventionally faking is not high, its false proof secrecy technology imprecision.
Can be clear that by above-mentioned, in the face of more and more advanced at present false making means, existing single magnetic secrecy technology or ordinary optical Quick Response Code scanning decoding anti-counterfeiting technology can not realize high level anti-fake encrpted.
Summary of the invention
For the problems referred to above, the application provides a kind of magnetic anti-counterfeit system and method, can improve false proof grade.
The invention discloses a kind of magnetic anti-counterfeit system, it comprises:
Magnetic sensor, it comprises multiple magnetic transducings unit and circuit module, described magnetic transducing unit is in order to detect the magnetic signal of magnetic material of false proof thing, and described circuit module is in order to process the output signal of described magnetic transducing unit and to export corresponding figure signal;
Pattern process module, it comprises figure recognition unit and processor, described figure recognition unit is used for receiving figure signal and described figure signal is converted into bar code and/or Quick Response Code; Described processor be used for receiving bar code and/or Quick Response Code and by its decoding to obtain true and false result.
Preferably, the sensitive element of described magnetic transducing unit is one or more in Hall element, anisotropic magnetoresistance element, giant magnetoresistance element or magnetic tunnel junction element.
Preferably, described multiple magnetic transducings unit is linear or rectangular arranging.
The invention also discloses a kind of false proof thing, it comprises the first figure of being made up of magnetic material and the second graph of being made up of nonmagnetic substance, described the first figure and described second graph cannot be by naked eyes or optical instrument identifications, and one in described the first figure or second graph is bar code and/or Quick Response Code.
Preferably, the color of described the first figure and described second graph is close.
Preferably, in described the first figure and described second graph, be the water white transparency of bar code and/or Quick Response Code.
Preferably, that forms bar code and/or Quick Response Code in the first figure or second graph is hidden in the pattern being made up of described second graph and described the first figure.
Preferably, described false proof thing is in the bonding jumper in bank card, check, classified document, banknote, supermarket commodity and library.
The invention also discloses a kind of magnetic anti-counterfeit method, comprising:
Magnetic sensor detects the magnetic signal of the magnetic material of false proof thing, and described magnetic signal is converted into figure signal;
The figure recognition unit of pattern process module receives figure signal and will transform and obtain bar code or Quick Response Code described figure signal;
The processor of pattern process module receive bar code or Quick Response Code and by its decoding to obtain result.
Antiforge system in the present invention obtains result to carrying out decoding by the figure signal being made up of bar code or Quick Response Code of naked eyes or optical instrument identification, has therefore increased the false proof difficulty of false proof thing and Antiforge system, has improved false proof rank.
Brief description of the drawings
Fig. 1 is the schematic diagram of false proof thing in the application's magnetic anti-counterfeit technology.
Fig. 2 is the schematic diagram of the bar code information scanning process in the application's magnetic anti-counterfeit technology.
Fig. 3 is the structuring concept figure of the application's magnetic anti-counterfeit system.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the application's protection.
Fig. 1 is an embodiment of anti-counterfeiting image in the application's magnetic secrecy technology.As shown in the figure, false proof thing 11 have the first figure 12( illustrate in four Chinese characters " enciphered message " of overstriking) and second graph 13.Note: in the time of practical application, the first figure 12 can be that color is identical with second graph 13, also can be figure complexity, make to distinguish second graph 13 and the first figure 12 by naked eyes and optical detection apparatus, therefore for convenience the first figure 12 is labeled as to black runic herein, can greatly improves false proof grade according to this setting.The false proof region (i.e. the first figure 12 regions) of common false proof thing 11 can be by magnetic ink printing, described magnetic ink is the ink containing magnetic material, wherein magnetic material can be hard magnetic material, can be also soft magnetic material, can be also the composite material of soft magnetism and Hard Magnetic.
In the present embodiment, the first figure 12 comprises magnetic material, and second graph 13 does not comprise magnetic material.Certainly the first figure 12 in like manner does not comprise magnetic material, and second graph 13 whether to comprise magnetic material be also desirable the first figure 12 in the present embodiment and second graph 13 taking as false proof thing is carried out zoning by magnetic material.In the present embodiment, one of them in the first figure 12 and second graph 13 is Quick Response Code or bar code.In order to make naked eyes and optical device cannot distinguish the first figure 12 and second graph 13, can be in the following manner:
(1) first figure 12 and second graph 13 adopt homochromy;
(2) first figures 12 are hidden in second graph 13, and for example two rings in Olympic Five Ring are magnetic material, and two rings in addition do not have magnetic material;
(3) first figures 12 adopt transparent magnetic ink.
Fig. 2 is the schematic diagram of the scanning process in the application's magnetic anti-counterfeit technology.As shown in the figure, first figure 12 and the second graph 13 of the false proof region of false proof thing 11 above cannot distinguishing under the detection of naked eyes and optical device is passed to pattern process module 22 by the magnetic signal of output 14 after magnetic sensor scanning.Because the first figure 12 is containing magnetic material, therefore there is signal containing the region of magnetic material, do not have the region of magnetic material there is no level output, in Fig. 2, the signal of the first figure 12 correspondences is 15, the signal (without level) that second graph is corresponding is 16.Magnetic sensor 21 comprises multiple magnetic transducings unit 41 and circuit module 43.Multiple magnetic transducings unit 41 and circuit module 43 can pass through flexible PCB 43(or PCB) electrical connection, or circuit module 43 to be positioned at PCB upper, magnetic transducing unit 41 and circuit module 43 are by bonding wire or soldered ball electrical connection.When work, magnetic transducing unit 41 detects the stray field 31 of the first figure 12 of false proof thing 11, and its output signal can be processed by circuit module 43.Circuit module 43 can comprise one or more in noise reduction unit, amplifying unit, AD conversion unit so that the magnetic signal of the first figure 12 is amplified, noise reduction, and finally obtain corresponding figure signal 14, wherein signal 15 and signal 16 are corresponding with the first figure 12 and second graph 13 respectively.Because figure signal 14 is figure signals (representing with sawtooth in accompanying drawing) that a gray scale shows and have certain noise, therefore need the figure recognition unit of pattern process module 22 to be optimized as level and smooth figure so that processor can be identified it.Figure recognition unit is optimized to process to figure signal 14 and obtains the first figure 12, i.e. bar code 12 in Fig. 2, and processor further carries out decoding to figure the first figure 12, thereby obtains security information wherein to realize false distinguishing.
The pattern process module 22 that comprises figure recognition unit and processor is a single-chip microcomputer or PC, realizes the optimization to figure signal 14 and the decoding to bar code and/or Quick Response Code by the program writing.
Fig. 3 is the structural representation of an embodiment of the application's magnetic anti-counterfeit system.As shown in the figure, the thing to be checked 11 that is marked with the first figure 12 scans through magnetic sensor 21, magnetic transducing unit in magnetic sensor 21 obtains original output signal by the stray field 31 of magnetic material in induction anti-counterfeiting image, original output signal obtains the figure signal 14 of the first figure 12 after the built-in related circuit module 42 of magnetic sensor 21 is processed (amplification, noise reduction, analog to digital conversion etc.), then figure signal 14 is passed to pattern process module 22 and analyzes and can realize false distinguishing.
Magnetic sensor 21 comprises magnetic transducing unit 41 and circuit module 42, and described magnetic transducing unit 41 is that a chip can electrically connect by flexible PCB 43 or PCB and circuit module 42.
In actual applications, the scanning of the first figure 12 has the problem that precision is inadequate, if simple character or this resolution of bar code are not too high figures, the magnetic sensor taking Hall element as sensitive element of main flow can meet the demands at present, if but relating to Quick Response Code or more complicated image, the precision of Hall element is just not much of that.China's application number is that 201310131834.1 and 201310131459.0 patent has disclosed the magneto-resistor with MR() element, especially taking giant magnetoresistance element and magnetic tunnel junction element as the magnetic sensor of sensitive element, can reach the scanning of the precision of magnetic image rank by this type of magnetic sensor.
According to the actual demand to precision, the sensitive element of magnetic transducing unit can be one or more in Hall element, anisotropic magnetoresistance element, giant magnetoresistance element or magnetic tunnel junction element.Realize the structure that magnetic image magnetic scanning sensor is generally multichannel, contain multiple magnetic transducings unit 41 and be linear or rectangular arranging, multiple sensing units 41 can be integrated on a chip, also can be by the amalgamation of multiple sensing unit chip block together.Because Hall element volume is very large, the density of its sensor unit is generally ten or tens DPI, be applicable to the scanning of character or simple graph, if scanning bar code, Quick Response Code or magnetic image, need DPI up to a hundred and even up to ten thousand, this time, volume was less, anisotropic magnetoresistance element, giant magnetoresistance element and magnetic tunnel junction element that precision is higher become preferential selection, in theory, adopt the magnetic transducing unit interval that magnetic tunnel junction element is sensitive element can reach several microns of even Nano grades.In order to realize High Density Integration, can, by vertical with false proof thing 11 place plane X-Y magnetic transducing unit 41 or be an angle instead of parallel, can realize highdensity integrated by maximum magnitude like this.
The structure of magnetic transducing unit is half-bridge and full bridge structure preferably, considers anti-interference demand, can be gradient half-bridge or gradient full bridge structure, also can be set to single resistance.Above-mentioned half-bridge comprises two brachium pontis that physical property is identical with gradient half-bridge, and full-bridge and gradient full-bridge comprise four brachium pontis, and single resistance only has a brachium pontis.Wherein each brachium pontis is formed by connecting by the identical magnetic sensor elements of one or more physical propertys.
The invention also discloses a kind of false proof thing 11, it comprises the first figure 12 of being made up of magnetic material and the second graph 13 of being made up of nonmagnetic substance, described the first figure 12 cannot be by naked eyes and optical instrument identification with described second graph 13, and one in described the first figure 12 or second graph 13 is bar code and/or Quick Response Code.The color of described the first figure 12 and described second graph 13 is close.Described the first figure 12 water white transparencies.That that forms Quick Response Code or bar code in the first figure 12 or second graph 13 is hidden in the pattern being made up of described second graph 12 and described the first figure 13.Described false proof thing 11 can be in the bonding jumper in bank card, check, classified document, banknote, supermarket commodity and library
Should be appreciated that the above detailed description of technical scheme of the present invention being carried out by preferred embodiment is illustrative and not restrictive.Those of ordinary skill in the art modifies reading the technical scheme that can record each embodiment on the basis of instructions of the present invention, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. a magnetic anti-counterfeit system, is characterized in that, it comprises:
Magnetic sensor, it comprises multiple magnetic transducings unit and circuit module, described magnetic transducing unit is in order to detect the magnetic signal of magnetic material of false proof thing, and described circuit module is in order to process the output signal of described magnetic transducing unit and to export corresponding figure signal;
Pattern process module, it comprises figure recognition unit and processor, described figure recognition unit is used for receiving figure signal and described figure signal is converted into bar code and/or Quick Response Code; Described processor be used for receiving bar code and/or Quick Response Code and by its decoding to obtain true and false result.
2. magnetic anti-counterfeit system according to claim 1, is characterized in that: the sensitive element of described magnetic transducing unit is one or more in Hall element, anisotropic magnetoresistance element, giant magnetoresistance element or magnetic tunnel junction element.
3. magnetic anti-counterfeit system according to claim 1, is characterized in that: described multiple magnetic transducings unit is linear or rectangular arranging.
4. a false proof thing, it is characterized in that: it comprises the first figure of being made up of magnetic material and the second graph of being made up of nonmagnetic substance, described the first figure and described second graph cannot be by naked eyes or optical instrument identifications, and one in described the first figure or second graph is bar code and/or Quick Response Code.
5. according to the false proof thing of claim 4, it is characterized in that: the color of described the first figure and described second graph is close.
6. according to the false proof thing of claim 4, it is characterized in that: the water white transparency for bar code and/or Quick Response Code in described the first figure and described second graph.
7. according to the false proof thing of claim 4, it is characterized in that: that forms bar code and/or Quick Response Code in the first figure or second graph is hidden in the pattern being made up of described second graph and described the first figure.
8. according to the false proof thing of claim 4, it is characterized in that: described false proof thing is in the bonding jumper in bank card, check, classified document, banknote, supermarket commodity and library.
9. a magnetic anti-counterfeit method, is characterized in that, comprising:
Magnetic sensor detects the magnetic signal of the magnetic material of false proof thing, and described magnetic signal is converted into figure signal;
The figure recognition unit of pattern process module receives figure signal and will transform and obtain bar code or Quick Response Code described figure signal;
The processor of pattern process module receive bar code or Quick Response Code and by its decoding to obtain result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410361664.0A CN104123526A (en) | 2014-07-25 | 2014-07-25 | Magnetic anti-counterfeiting system and method |
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| CN201410361664.0A CN104123526A (en) | 2014-07-25 | 2014-07-25 | Magnetic anti-counterfeiting system and method |
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| CN109146712A (en) * | 2018-08-10 | 2019-01-04 | 四川广聚其力电子科技有限公司 | A kind of construction project concrete mark is feeding with feeding test block intelligent management and system |
| CN109344669A (en) * | 2018-08-10 | 2019-02-15 | 四川广聚其力电子科技有限公司 | A kind of construction project source code decryption device and method |
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Application publication date: 20141029 |