CN103617672A - Implicit magnetic code detection device and method - Google Patents
Implicit magnetic code detection device and method Download PDFInfo
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Abstract
The invention provides an implicit magnetic code detection device. The implicit magnetic code detection device comprises a magnetic sensor, an amplifying circuit connected with the magnetic sensor, a shaping circuit connected with the amplifying circuit, and an A / D conversion circuit connected with the shaping circuit, and further comprises a single-chip microcomputer, a display unit connected with the single-chip microcomputer, and a data center, wherein the single-chip microcomputer is connected with the output terminal of the A / D conversion circuit. The implicit magnetic code detection device is low in cost, small in size, and convenient to carry; meanwhile, time for detection is short, and detection is accurate. By the introduction of the data center, large-scale management of data storage, calling and updating are more convenient. The invention further provides an implicit magnetic code detection method, wherein the magnetic sensor is used for picking up a signal, the signal is amplified, shaped and subjected to A / D conversion through the amplifying circuit, the shaping circuit and the A / D conversion circuit respectively, and the signal is transmitted to the single-chip microcomputer; the single-chip microcomputer and the data center are matched with each other for analyzing and identifying the signal, and an identification result is displayed. The implicit magnetic code detection method is simple, high in accuracy, and good in stability.
Description
Technical field
The present invention relates to false proof field, particularly a kind of implicit magnetic code pick-up unit and detection method.
Background technology
Magnetic ink printing anti-counterfeiting technology is applied to commodity counterfeit prevention aspect, has anti-counterfeiting power high, and difficult quilt is copied, and magnetic code printing is convenient, the advantage that Anti-counterfeiting magnetic code cost is low.At present implicit magnetic code technology has application in the security hologram line at multi national river, also not application in other respects.And mainly adopt specialized equipment to read with cash inspecting machine to the detection of currency, check.The inner proprietary personnel of the hundreds thousand of Yuan You of price bank of specialized equipment identify security hologram line by technical skill, and cash inspecting machine is just differentiated the face amount of different Currency Types, nonexistent code storehouse and coding by simple graphic correlation.Traditional magnetic code detects all needs proprietary pick-up unit and mechanical drive, volume is large, be not suitable for manually portable and intelligent movable equipment, as the patent No. a kind of voice magnetic code discriminator that is 02282242.9, although volume is little, be easy to carry, but in operating process, easily make testing result produce error, rate of false alarm is high.
The false-proof detection method using at present comprises Ultraluminescence reflection false distinguishing, infrared transmission, reflection false distinguishing, magnetic ink false distinguishing and magnetic-pulse false distinguishing etc., current Ultraluminescence reflection false distinguishing, infrared transmission false distinguishing, infrared emission false distinguishing, magnetic ink false distinguishing all rest in judgement qualitatively substantially, pulse number is only calculated in magnetic-pulse false distinguishing simultaneously, adopt simple quantitatively judgement to reach the object of anti-counterfeiting detection, but above-mentioned detection method is all too single simple on detecting, and easily causes detected erroneous results.Application number is the method that magnetic code magnetic hysteresis loop feature is differentiated in a kind of Magnetic Sensor of 201310024736.8 and quantification, application number is a kind of cash inspecting machine of 201310024737.2 and quantizes authenticity method, all that magnetic code is completed magnetic hysteresis loop process complete or part by Magnetic Sensor surface by magnet magnetization, and by Magnetic Sensor, read the signal of corresponding magnetic history, and then the magnetic hysteresis loop feature of magnetic code is carried out to the coercive force that definition magnetic code was identified and quantized to magnetic code soft or hard magnetic characteristic, square all and the evaluation that distributes of reversing magnetic field, although identify that accuracy is high, good stability, but corresponding detecting instrument is complicated, volume is large, cost is high, detection need to repeat to magnetize, demagnetize and oppositely magnetize, the required time is long, impracticable.The method can only be applied on ferromagnetic magnetic code simultaneously, and when used magnetic code adopts weak magnetic material to be printed on object, the method is just not suitable for.
Summary of the invention
The invention provides a kind of implicit magnetic code pick-up unit and detection method, its object is to overcome that existing checkout equipment rate of false alarm is high, the shortcoming of poor stability, simultaneously also single simple in order to overcome existing anti false authentication method, the shortcoming that anti-counterfeiting detection accuracy rate is low.
The present invention adopts following technical scheme:
A kind of implicit magnetic code pick-up unit, comprise Magnetic Sensor, the amplifying circuit being connected with Magnetic Sensor, the shaping circuit being connected with amplifying circuit and the A/D change-over circuit being connected with shaping circuit, also comprise single-chip microcomputer, the display unit being connected with single-chip microcomputer and data center, described single-chip microcomputer is connected with the output terminal of described A/D change-over circuit.
Described data center comprises magnetic code storehouse and software, this magnetic code storehouse comprises mechanical features, magnetic feature and the false code of magnetic code, described mechanical features comprises code-bar number, yardstick is very little and code distance, described magnetic feature comprises remanent magnetism ratio and coercive force ratio, the signal that this software can transmit single-chip microcomputer is analyzed, and compares, and add false code to identify by the multiple variable of magnetic code library call and coding, send the result of identification to single-chip microcomputer, single-chip microcomputer shows result by display unit.
Described single-chip microcomputer is provided with software, the signal that this software can obtain from single-chip microcomputer, extract magnetic code multivariate feature, and send to data center, data center compares by the multiple variable of data center's software analysis, code library call and coding, and add false code to identify, pass recognition result back single-chip microcomputer, single-chip microcomputer shows result by display unit.
Described single-chip microcomputer is provided with software, the magnetic code signal that this software directly obtains single-chip microcomputer sends to data center, data center extracts magnetic code multivariate feature by data center's software, and compare by the multiple variable of code library call and coding, add false code to identify, pass recognition result back single-chip microcomputer, single-chip microcomputer shows result by display unit.
Described single-chip microcomputer is provided with magnetic code storehouse and software, this software directly by single-chip microcomputer from the magnetic code signal extraction magnetic code multivariate feature obtained and analyze, multiple variable by code library call and coding is compared, and adds false code to identify, and recognition result is shown by display unit.
Described display unit is the client of being located on smart machine, and described smart machine is provided with control module, and described client is by control module and single chip communication, and testing result is shown in client; Described display unit can be also LED display, audio devices or light emitting diode.
Described Magnetic Sensor is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer, the magnetic code storehouse of described data center and software can carry out real-time update by Internet technology and technology of Internet of things, and the magnetic code storehouse on described single-chip microcomputer and software upgrade by data center or directly by Internet technology and technology of Internet of things, carries out real-time update.
A hidden magnetic code detection method, comprises the following steps:
A. implicit magnetic code is adopted non-ferromagnetic material to be printed on paper, packing material or surface in kind in the mode of printing, data center sets up magnetic code storehouse and analysis software simultaneously, magnetic code storehouse comprises mechanical features, magnetic feature and the false code of magnetic code, described mechanical features comprises code-bar number, yardstick is very little and code distance, and described magnetic feature comprises remanent magnetism ratio and coercive force ratio;
B. use Magnetic Sensor to press close to magnetic code region, be close to magnetic code surface fast mistake, pick up magnetic code signal and obtain magnetic code information wherein; By the magnetic code signal picking up through oversampling circuit amplify, shaping, A/D conversion process, obtain the magnetic code signal of complete Gong single-chip microcomputer identification;
C. single-chip microcomputer and data center extract and software analysis the multiple variable of magnetic code signal by cooperatively interacting, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is passed through to LED display, audio devices, light emitting diode or smart machine output detections result.
In described step C, single-chip microcomputer and data center coordinate the three kinds of modes that comprise, mode one is provided with magnetic code storehouse and software for single-chip microcomputer, single-chip microcomputer obtains after magnetic code signal, the multiple characteristics of variables of magnetic code signal is extracted and software analysis, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is exported by LED display, audio devices, light emitting diode or smart machine; Mode two is directly sent to data center for single-chip microcomputer by the magnetic code signal obtaining, data center extracts and software analysis the multiple characteristics of variables of magnetic code signal, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is sent back to single-chip microcomputer, and single-chip microcomputer is exported result by LED display, audio devices, light emitting diode or smart machine; Mode three is obtained magnetic code signal for single-chip microcomputer, this magnetic code signal is carried out to fringeware analysis, extract the multiple characteristics of variables of magnetic code signal, and the multiple characteristics of variables of magnetic code signal is sent to data center, data center carries out software analysis to the multiple characteristics of variables of magnetic code signal characteristic, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is sent back to single-chip microcomputer, and single-chip microcomputer is exported result by LED display, audio devices, light emitting diode or smart machine; In above-mentioned three kinds of modes, the magnetic code storehouse of data center and software carry out real-time update by Internet technology and technology of Internet of things, magnetic code storehouse on single-chip microcomputer and software can pass through data center's real-time update, also can directly by Internet technology and technology of Internet of things, carry out real-time update.
Described smart machine is provided with client and control module, and this client is by control module and described single chip communication, and smart machine is shown in final testing result in client; Described Magnetic Sensor is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, and this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer.
From the above-mentioned description of this invention, compared to the prior art, tool of the present invention has the following advantages:
1, because Magnetic Sensor is for set has the Magnetic Sensor of acceleration transducer, can accurately judge the relative displacement between two magnetic code signals, avoid under different condition speed speed inhomogeneous and affect identification result, make testing result more stable accurate;
2, this pick-up unit cost is low, volume is little, be easy to carry, simultaneously detection time short, detect accurately; This pick-up unit can also be located on smart machine; on smart machine by control module and single chip communication; and testing result is shown in client; this client can real-time update; increase as required function; magnetic code storehouse, each component software all can carry out real-time update by Internet technology and technology of Internet of things simultaneously; being convenient to ordinary people uses; more convenient and practical; the use of false code has increased counterfeit difficulty; introduce the use of data center simultaneously, be more convenient to the storage of data, the scale management of calling and upgrading.
3, this detection method is picked up magnetic code signal and is obtained magnetic code information wherein by Magnetic Sensor; By the magnetic code signal picking up through oversampling circuit amplify, shaping, A/D conversion process, obtain the magnetic code signal of complete Gong single-chip microcomputer identification; By single-chip microcomputer and data center, cooperatively interact the multiple variable of magnetic code signal is carried out to software analysis simultaneously, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is passed through to LED display, audio devices, light emitting diode or smart machine output detections result.This detection method is simple, and accuracy is simultaneously high, good stability.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of embodiment mono-.
Fig. 2 is another structured flowchart of embodiment mono-.
Fig. 3 is the structured flowchart of embodiment bis-.
Fig. 4 is another structured flowchart of embodiment bis-.
Fig. 5 is the structured flowchart of embodiment tri-.
Fig. 6 is another structured flowchart of embodiment tri-.
Embodiment
The specific embodiment of the present invention is described with reference to the accompanying drawings.
Embodiment mono-
As shown in Figure 1, a kind of implicit magnetic code pick-up unit, comprise Magnetic Sensor 1, the amplifying circuit 2 being connected with Magnetic Sensor 1, the shaping circuit 3 being connected with amplifying circuit 2 and the A/D change-over circuit 4 being connected with shaping circuit 3, also comprise single-chip microcomputer 5, the smart machine 6 being all connected with single-chip microcomputer 5 and data center 7, described single-chip microcomputer 5 is connected with the output terminal of described A/D change-over circuit 4, smart machine 6 is provided with control module 61, user can download client 62 and is installed on smart machine 6, client 62 is communicated by letter with single-chip microcomputer 5 by control module 61, single-chip microcomputer 5 is provided with software 51.
User can open the client 62 on smart machine 6, client 62 is communicated by letter with single-chip microcomputer 5 by control module 61 and software 51, start Magnetic Sensor 1 and start working, user is scanned magnetic code by Magnetic Sensor 1, picks up magnetic code signal and obtains magnetic code information wherein, the magnetic code signal picking up is passed through to amplifying circuit 2, shaping circuit 3, A/D change-over circuit 4 sends single-chip microcomputer 5 to, software 51 on single-chip microcomputer 5 is analyzed, extract the multiple characteristics of variables of magnetic code signal, and import data center 7 into, the multiple characteristics of variables of 7 pairs of magnetic code signal characteristics of data center is analyzed by software 72, the multiple variable comparison that magnetic code storehouse 71 is called and encoded, and add false code 713 to identify, pass recognition result back single-chip microcomputer 5, single-chip microcomputer 5 sends result to smart machine 6 by control module 61 and software 51, smart machine 6 will the results are shown in client 62 by control module 61, by client 62, user just can know the true and false of commodity, magnetic code storehouse 71 and the software 51 on analysis software 72 and single-chip microcomputer 5 of data center 7 all can carry out real-time update by Internet technology and technology of Internet of things simultaneously.
It is above-mentioned except single-chip microcomputer 5 is connected with smart machine 6, outside net result is shown by the client 62 on smart machine 6, single-chip microcomputer 6 directly can also be connected to LED display, audio devices or light emitting diode, by LED display, audio devices or light emitting diode, directly result is shown simultaneously; With reference to figure 2, above-mentioned Magnetic Sensor 1 is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer 8, use this sensor can accurately judge the relative displacement between two magnetic code signals, avoid the speed speed under different condition inhomogeneous and affect identification result, made testing result more accurately stable.
A hidden magnetic code detection method, comprises the following steps:
A. implicit magnetic code is adopted non-ferromagnetic material to be printed on paper, packing material or surface in kind in the mode of printing, data center 7 sets up magnetic code storehouse 71 and analysis software 72 simultaneously, magnetic code storehouse 71 comprises mechanical features 711, magnetic feature 712 and the false code 713 of magnetic code, mechanical features 711 comprises code-bar number, yardstick is very little and code distance, and magnetic feature 712 comprises remanent magnetism ratio and coercive force ratio;
B. use Magnetic Sensor 1, press close to magnetic code region, be close to magnetic code surface fast mistake, pick up magnetic code signal and obtain magnetic code information wherein; By the magnetic code signal picking up through oversampling circuit amplify, shaping, A/D conversion process, obtain the electric signal of complete Gong single-chip microcomputer 5 identifications;
C. single-chip microcomputer 5 obtains magnetic code signal, this magnetic code signal is carried out to fringeware analysis by software 51, extract the multiple characteristics of variables of magnetic code signal, and the multiple characteristics of variables of magnetic code signal is sent to data center 7, the multiple characteristics of variables of 7 pairs of magnetic code signal characteristics of data center carries out software analysis by analysis software 72, by calling and the multiple variable of encoding is compared in magnetic code storehouse 71, and add false code 713 to identify, the result of identification is sent back to single-chip microcomputer 5, and single-chip microcomputer 5 is exported result by smart machine 6; Smart machine 6 is provided with control module 61 and client 62, this client 62 is communicated by letter with single-chip microcomputer 5 by control module 61, single-chip microcomputer 5 sends testing result to smart machine 6, smart machine 6 is shown in testing result in client 62 by control module 61, meanwhile, the magnetic code storehouse 71 of the software 51, data center 7 on single-chip microcomputer 5 and analysis software 72 all can carry out real-time update by Internet technology and technology of Internet of things.
In step B, Magnetic Sensor 1 should be avoided same frequency electromagnetic interference (EMI) in testing process.
In this embodiment, false code 713 refers to that a kind of and real pattern is identical or different, and the coding identical from normal encoding mode or different coded systems participate in or do not participate in a kind of code of identification.With reference to figure 2, Magnetic Sensor 1 is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer 8, use this sensor can accurately judge the relative displacement between two magnetic code signals, avoided the speed speed under different condition inhomogeneous and affect identification result, make testing result more accurately stable, the testing result of above-mentioned single-chip microcomputer 5 is except can showing result by the client 62 on smart machine 6 simultaneously, the above results can also be passed through to LED display, audio devices or light emitting diode directly show.
Embodiment bis-
As shown in Figure 3, a kind of implicit magnetic code pick-up unit, comprise Magnetic Sensor 1, the amplifying circuit 2 being connected with Magnetic Sensor 1, the shaping circuit 3 being connected with amplifying circuit 2 and the A/D change-over circuit 4 being connected with shaping circuit 3, also comprise single-chip microcomputer 5, the smart machine 6 being all connected with single-chip microcomputer 5 and data center 7, described single-chip microcomputer 5 is connected with the output terminal of described A/D change-over circuit 4, smart machine 6 is provided with control module 61, user can download client 62 and is installed on smart machine 6, client 62 is communicated by letter with single-chip microcomputer 5 by control module 61, single-chip microcomputer 5 is provided with software 51 and magnetic code storehouse 52, this magnetic code storehouse 52 comprises the mechanical features 521 of magnetic code, magnetic feature 522 and false code 523, mechanical features 521 comprises code-bar number, yardstick cun and code distance, magnetic feature 522 comprises remanent magnetism ratio and coercive force ratio.
User can open the client 62 on smart machine 6, and client 62 is communicated by letter with single-chip microcomputer 5 by control module 61, starts Magnetic Sensor 1 and starts working, and user is scanned magnetic code by Magnetic Sensor 1, picks up magnetic code signal and obtains magnetic code information wherein, the magnetic code signal picking up is passed through to amplifying circuit 2, shaping circuit 3, A/D change-over circuit 4, send magnetic code information to single-chip microcomputer 5, software 51 on single-chip microcomputer is analyzed, extract the multiple characteristics of variables of magnetic code signal, multiple characteristics of variables analysis to magnetic code signal characteristic simultaneously, the multiple variable comparison that magnetic code storehouse 52 is called and encoded, and add false code 523 to identify, single-chip microcomputer 5 sends recognition result to smart machine 6, smart machine 6 will the results are shown in client 62 by control module 61, by client 62, user just can know the true and false of commodity, software 51Ke Yu data center on single-chip microcomputer 57 communications simultaneously, magnetic code storehouse 71 and analysis software 72 that data center 7 can be followed in this software 51 and magnetic code storehouse 52 carry out real-time update by Internet technology and technology of Internet of things.
It is above-mentioned except single-chip microcomputer 5 is connected with smart machine 6, outside net result is shown by the client 62 on smart machine 6, single-chip microcomputer 5 directly can also be connected to LED display simultaneously, audio devices or light emitting diode, pass through LED display, audio devices or light emitting diode directly show result, with reference to figure 4, above-mentioned Magnetic Sensor 1 is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer 8, use this sensor can accurately judge the relative displacement between two magnetic code signals, avoided the speed speed under different condition inhomogeneous and affect identification result, make testing result more accurately stable.
A hidden magnetic code detection method, comprises the following steps:
A. implicit magnetic code is adopted non-ferromagnetic material to be printed on paper, packing material or surface in kind in the mode of printing, data center 7 sets up magnetic code storehouse 71 and analysis software 72 simultaneously, magnetic code storehouse 71 comprises mechanical features 711, magnetic feature 712 and the false code 713 of magnetic code, mechanical features 711 comprises code-bar number, yardstick is very little and code distance, and magnetic feature 712 comprises remanent magnetism ratio and coercive force ratio;
B. use Magnetic Sensor 1, press close to magnetic code region, be close to magnetic code surface fast mistake, pick up magnetic code signal and obtain magnetic code information wherein; By the magnetic code signal picking up through oversampling circuit amplify, shaping, A/D conversion process, obtain the electric signal of complete Gong single-chip microcomputer 5 identifications;
C. single-chip microcomputer 5 obtains magnetic code signal, by analysis software 51, the multiple characteristics of variables of magnetic code signal is extracted, and analyze, by calling and the multiple variable of encoding is compared in magnetic code storehouse 52, and add false code 523 to identify, the result of identification is exported by smart machine 6; Smart machine 6 is provided with control module 61 and client 62, this client 62 is communicated by letter with single-chip microcomputer 5 by control module 61, single-chip microcomputer 5 sends testing result to smart machine 6, smart machine 6 is shown in testing result in client 62, meanwhile, data center 7 is followed in the software 51 on single-chip microcomputer 5 and magnetic code storehouse 52 magnetic code storehouse 71 and software 72 carry out real-time update by Internet technology and technology of Internet of things.
In step B, Magnetic Sensor 1 should be avoided same frequency electromagnetic interference (EMI) in testing process.
In this embodiment, false code 713,523 refers to that a kind of and real pattern is identical or different, and the coding identical from normal encoding mode or different coded systems participate in or do not participate in a kind of code of identification.With reference to figure 4, Magnetic Sensor 1 is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer 8, use this sensor can accurately judge the relative displacement between two magnetic code signals, avoided the speed speed under different condition inhomogeneous and affect identification result, make testing result more accurately stable, the testing result of above-mentioned single-chip microcomputer 5 is except can showing result by the client 62 on smart machine 6, the above results can also be passed through to LED display, audio devices or light emitting diode directly show.
Embodiment tri-
As shown in Figure 5, a kind of implicit magnetic code pick-up unit, comprise Magnetic Sensor 1, the amplifying circuit 2 being connected with Magnetic Sensor 1, the shaping circuit 3 being connected with amplifying circuit 2 and the A/D change-over circuit 4 being connected with shaping circuit 3, also comprise single-chip microcomputer 5, the smart machine 6 being all connected with single-chip microcomputer 5 and data center 7, described single-chip microcomputer 5 is connected with the output terminal of described A/D change-over circuit 4, smart machine 6 is provided with control module 61, user can download client 62 and is installed on smart machine 6, client 62 is communicated by letter with single-chip microcomputer 5 by control module 61, single-chip microcomputer 5 is provided with software 51.
User can open the client 62 on smart machine 6, and client 62 is communicated by letter with single-chip microcomputer 5 by control module 61, starts Magnetic Sensor 1 and starts working, and user is scanned magnetic code by Magnetic Sensor 1, picks up magnetic code signal and obtains magnetic code information wherein, the magnetic code signal picking up is passed through to amplifying circuit 2, shaping circuit 3, A/D change-over circuit 4 sends single-chip microcomputer 5 to, single-chip microcomputer 5 obtains signal and directly transmits signal to data center 7 by software 51, data center 7 obtains signal, by software 72, extract the multiple characteristics of variables of magnetic code signal, multiple characteristics of variables analysis to magnetic code signal characteristic simultaneously, the multiple variable comparison that magnetic code storehouse 71 is called and encoded, and add false code 713 to identify, send result to single-chip microcomputer 5, single-chip microcomputer 5 sends recognition result to smart machine 6, smart machine 6 will the results are shown in client 62, by client 62, user just can know the true and false of commodity, data center 7 can be followed in software 51 on single-chip microcomputer 5 and magnetic code storehouse 52 simultaneously magnetic code storehouse 71 and analysis software 72 carry out real-time update by Internet technology and technology of Internet of things.
It is above-mentioned except single-chip microcomputer 5 is connected with smart machine 6, outside net result is shown by the client 62 on smart machine 6, single-chip microcomputer 6 directly can also be connected to LED display simultaneously, audio devices or light emitting diode, pass through LED display, audio devices or light emitting diode directly show result, with reference to figure 6, above-mentioned Magnetic Sensor 1 is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer 8, use this sensor can accurately judge the relative displacement between two magnetic code signals, avoided the speed speed under different condition inhomogeneous and affect identification result, make testing result more accurately stable.
A hidden magnetic code detection method, comprises the following steps:
A. implicit magnetic code is adopted non-ferromagnetic material to be printed on paper, packing material or surface in kind in the mode of printing, data center 7 sets up magnetic code storehouse 71 and analysis software 72 simultaneously, magnetic code storehouse 71 comprises mechanical features 711, magnetic feature 712 and the false code 713 of magnetic code, mechanical features 711 comprises code-bar number, yardstick is very little and code distance, and magnetic feature 712 comprises remanent magnetism ratio and coercive force ratio;
B. use Magnetic Sensor 1, press close to magnetic code region, be close to magnetic code surface fast mistake, pick up magnetic code signal and obtain magnetic code information wherein; By the magnetic code signal picking up through oversampling circuit amplify, shaping, A/D conversion process, obtain the electric signal of complete Gong single-chip microcomputer 5 identifications;
C. single-chip microcomputer 5 obtains magnetic code signal, by software 51, send magnetic code signal to data center 7, data center extracts the multiple characteristics of variables of magnetic code signal by software 72, and analyze, by calling and the multiple variable of encoding is compared in magnetic code storehouse 71, and add false code 713 to identify, send the result of identification to single-chip microcomputer 5, single-chip microcomputer 5 sends result to smart machine 6, and smart machine 6 is exported result; Smart machine 6 is provided with control module 61 and client 62, this client 62 is communicated by letter with single-chip microcomputer 5 by control module 61, single-chip microcomputer 5 sends testing result to smart machine 6, smart machine 6 is shown in testing result in client 62 by control module 61, meanwhile, the magnetic code storehouse 71 of data center 7 and analysis software 72 carry out real-time update by Internet technology and technology of Internet of things.
In this embodiment, false code 713 refers to that a kind of and real pattern is identical or different, and the coding identical from normal encoding mode or different coded systems participate in or do not participate in a kind of code of identification.With reference to figure 6, Magnetic Sensor 1 is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer 8, use this sensor can accurately judge the relative displacement between two magnetic code signals, avoided the speed speed under different condition inhomogeneous and affect identification result, make testing result more accurately stable, the testing result of above-mentioned single-chip microcomputer 5 is except can showing result by the client 62 on smart machine 6, the above results can also be passed through to LED display, audio devices or light emitting diode directly show.
In above-described embodiment one to embodiment tri-, in using the structure of single-chip microcomputer 5 and smart machine 6 output detections results, amplifying circuit 2, shaping circuit 3, A/D change-over circuit 4 and single-chip microcomputer 5 directly can also be integrated in the control module 61 of smart machine 6, make it one-body molded, more compact in structure, above-mentioned smart machine 6 can be the intelligent communication equipment such as mobile phone, panel computer or palm PC simultaneously.
Above are only the specific embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all should belong to the behavior of invading protection domain of the present invention.
Claims (10)
1. an implicit magnetic code pick-up unit, comprise Magnetic Sensor, the amplifying circuit being connected with Magnetic Sensor, the shaping circuit being connected with amplifying circuit and the A/D change-over circuit being connected with shaping circuit, it is characterized in that: also comprise single-chip microcomputer, the display unit being connected with single-chip microcomputer and data center, described single-chip microcomputer is connected with the output terminal of described A/D change-over circuit.
2. a kind of implicit magnetic code pick-up unit according to claim 1, it is characterized in that: described data center comprises magnetic code storehouse and software, this magnetic code storehouse comprises the mechanical features of magnetic code, magnetic feature and false code, described mechanical features comprises code-bar number, yardstick cun and code distance, described magnetic feature comprises remanent magnetism ratio and coercive force ratio, the signal that this software can transmit single-chip microcomputer is analyzed, multiple variable by magnetic code library call and coding is compared, and add false code to identify, send the result of identification to single-chip microcomputer, single-chip microcomputer shows result by display unit.
3. a kind of implicit magnetic code pick-up unit according to claim 2, it is characterized in that: described single-chip microcomputer is provided with software, the signal that this software can obtain from single-chip microcomputer, extract magnetic code multivariate feature, and send to data center, data center compares by the multiple variable of data center's software analysis, code library call and coding, and add false code to identify, and pass recognition result back single-chip microcomputer, single-chip microcomputer shows result by display unit.
4. a kind of implicit magnetic code pick-up unit according to claim 2, it is characterized in that: described single-chip microcomputer is provided with software, the magnetic code signal that this software directly obtains single-chip microcomputer sends to data center, data center extracts magnetic code multivariate feature by data center's software, and compare by the multiple variable of code library call and coding, add false code to identify, pass recognition result back single-chip microcomputer, single-chip microcomputer shows result by display unit.
5. a kind of implicit magnetic code pick-up unit according to claim 2, it is characterized in that: described single-chip microcomputer is provided with magnetic code storehouse and software, this software directly by single-chip microcomputer from the magnetic code signal extraction magnetic code multivariate feature obtained and analyze, multiple variable by code library call and coding is compared, add false code to identify, recognition result is shown by display unit.
6. according to a kind of implicit magnetic code pick-up unit described in claim 3,4 or 5, it is characterized in that: described display unit is the client of being located on smart machine, described smart machine is provided with control module, described client is by control module and single chip communication, and testing result is shown in client; Described display unit can be also LED display, audio devices or light emitting diode.
7. a kind of implicit magnetic code pick-up unit according to claim 6, it is characterized in that: described Magnetic Sensor is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer, the magnetic code storehouse of described data center and software can carry out real-time update by Internet technology and technology of Internet of things, and the magnetic code storehouse on described single-chip microcomputer and software upgrade by data center or directly by Internet technology and technology of Internet of things, carries out real-time update.
8. a hidden magnetic code detection method, is characterized in that: comprise the following steps:
A. implicit magnetic code is adopted non-ferromagnetic material to be printed on paper, packing material or surface in kind in the mode of printing, data center sets up magnetic code storehouse and analysis software simultaneously, magnetic code storehouse comprises mechanical features, magnetic feature and the false code of magnetic code, described mechanical features comprises code-bar number, yardstick is very little and code distance, and described magnetic feature comprises remanent magnetism ratio and coercive force ratio;
B. use Magnetic Sensor to press close to magnetic code region, be close to magnetic code surface fast mistake, pick up magnetic code signal and obtain magnetic code information wherein; By the magnetic code signal picking up through oversampling circuit amplify, shaping, A/D conversion process, obtain the magnetic code signal of complete Gong single-chip microcomputer identification;
C. single-chip microcomputer and data center extract and software analysis the multiple variable of magnetic code signal by cooperatively interacting, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is passed through to LED display, audio devices, light emitting diode or smart machine output detections result.
9. a kind of hidden magnetic code detection method according to claim 8, it is characterized in that: in described step C, single-chip microcomputer and data center coordinate the three kinds of modes that comprise, mode one is provided with magnetic code storehouse and software for single-chip microcomputer, single-chip microcomputer obtains after magnetic code signal, the multiple characteristics of variables of magnetic code signal is extracted and software analysis, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is exported by LED display, audio devices, light emitting diode or smart machine; Mode two is directly sent to data center for single-chip microcomputer by the magnetic code signal obtaining, data center extracts and software analysis the multiple characteristics of variables of magnetic code signal, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is sent back to single-chip microcomputer, and single-chip microcomputer is exported result by LED display, audio devices, light emitting diode or smart machine; Mode three is obtained magnetic code signal for single-chip microcomputer, this magnetic code signal is carried out to fringeware analysis, extract the multiple characteristics of variables of magnetic code signal, and the multiple characteristics of variables of magnetic code signal is sent to data center, data center carries out software analysis to the multiple characteristics of variables of magnetic code signal characteristic, multiple variable by magnetic code library call and coding is compared, and add false code to identify, the result of identification is sent back to single-chip microcomputer, and single-chip microcomputer is exported result by LED display, audio devices, light emitting diode or smart machine; In above-mentioned three kinds of modes, the magnetic code storehouse of data center and software carry out real-time update by Internet technology and technology of Internet of things, magnetic code storehouse on single-chip microcomputer and software can pass through data center's real-time update, also can directly by Internet technology and technology of Internet of things, carry out real-time update.
10. according to a kind of hidden magnetic code detection method described in right 8 or 9, it is characterized in that: described smart machine is provided with client and control module, this client is by control module and described single chip communication, and smart machine is shown in final testing result in client; Described Magnetic Sensor is thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head, and this thin film inducted heads, MR magnetic head, AMR magnetic head or GMR magnetic head upper set have acceleration transducer.
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