CN102402674B - A kind of method for anti-counterfeit based on RF tag and Antiforge system - Google Patents

Abstract

The present invention relates to field of anti-counterfeit technology, disclose a kind of method for anti-counterfeit based on RF tag and Antiforge system.Method for anti-counterfeit based on RF tag provided by the present invention and Antiforge system, provide one and be difficult to counterfeiting, that distorts extracts the method for anti-counterfeit with use RF tag characteristic information, the indicatrix information being shown under specific incentives Electromagnetic Field by extracting RF tag confirms the distinctive feature of article, then the real features diagram database of RF tag indicatrix is set, when differentiating article genuine-fake, by the real features curve in the indicatrix of RF tag to be verified and database being compared so that it is determined that the authenticity of RF tag to be verified.There is reproducible and not unclonable advantage, substantially increase security.

Description

A kind of method for anti-counterfeit based on RF tag and Antiforge system

Technical field

The present invention relates to field of anti-counterfeit technology, in particular a kind of false proof side based on RF tag Method and Antiforge system.

Background technology

In prior art, it is daily that RF tag includes that RFID and eas tag etc. have been widely used for The every aspect of life, such as access card or mass transit card etc..But false proof to RFID and eas tag Technology only reside within present software false proof on, identification code or password are for example set in chip hardware Etc., depend on the data of read-write card system and show and input realizes false proof.But this anti-counterfeiting technology exists In the case of extreme chip data replicates and can be ineffective under software breaking techniques.

Current material anti-counterfeiting technology is substantially based on the special realization of the special of physical material or technique, But existing material anti-counterfeiting technology cannot solve RF tag and be cloned imitated technical problem, and manufacturer does The RF tag going out is easy to realize replicating by the copy of data, and this has for economical operation closely The RF tag harm of relation is serious, such as mass transit card etc..

Therefore, prior art has yet to be improved and developed.

Content of the invention

The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, provides one Based on method for anti-counterfeit and the Antiforge system of RF tag, provide and a kind of be difficult to counterfeiting, carrying of distorting Take and use method for anti-counterfeit and the Antiforge system of RF tag characteristic information, various grams can be effectively prevented The generation of grand imitated situation, substantially increases security.

It is as follows that the present invention solves the technical scheme that technical problem used:

A kind of method for anti-counterfeit based on RF tag, wherein, including step:

A, in advance storage and each RF tag corresponding real features curve in database；

B, when needing the true and false distinguishing RF tag, launch one group to the RF tag that need to tell truth from falsehood Specific electromagnetic wave enters row energization, receives the radio frequency letter that this RF tag of need to telling truth from falsehood feeds back to simultaneously Number, obtain a stack features feedback profile；

In C, the profile feedback curve of RF tag that this receiving need to be told truth from falsehood and database in advance The real features curve of storage compares；When judge both differences in a predetermined scope, Then think that this RF tag is legal, be otherwise illegal or personation.

The described method for anti-counterfeit based on RF tag, wherein, described specific electromagnetic wave is with radio frequency mark Point centered on the natural resonance frequency signed, in the range of certain frequency, fixing the first excitation of emitted energy Electromagnetic wave.

The described method for anti-counterfeit based on RF tag, wherein, described step A specifically includes step:

A1, with described first Excitation Electromagnetic Wave, row energization is entered to each RF tag, obtain penetrating with each The corresponding real features feedback profile of frequency marking label, and by the true spy corresponding with each RF tag Levy feedback profile to be saved in database；

A2, the characteristic vector calculating the real features feedback profile data corresponding with each RF tag, Save it in database；And the real features feedback profile corresponding with its RF tag one a pair Should.

The described method for anti-counterfeit based on RF tag, wherein, described step C specifically includes:

C1, the feature calculating the profile feedback curve data of this RF tag of need to telling truth from falsehood receiving Vector；

C2, Land use models recognition methods, RF tag profile feedback of telling truth from falsehood the need receiving is bent The characteristic vector of all of real features feedback profile data in the characteristic vector of line data and database, Compare judgement；

C3, when characteristic vector and certain the real features curve of the profile feedback curve data receiving When the difference of characteristic vector is less than a predetermined threshold, then it is assumed that this RF tag that need to tell truth from falsehood is legal, It is otherwise illegal or personation.

The described method for anti-counterfeit based on RF tag, wherein, when described frequency marking label are RFID label tag, Described specific electromagnetic wave is point, certain frequency scope centered on the natural resonance frequency of RF tag Interior, emitted energy is fixed and by the second Excitation Electromagnetic Wave of amplitude modulation.

The described method for anti-counterfeit based on RF tag, wherein, described step A specifically includes step:

A1, with described second Excitation Electromagnetic Wave, row energization is entered to each RF tag, obtain penetrating with each The corresponding real features feedback profile of frequency marking label and unique sequence number thereof, and will be with each radio frequency mark Sign corresponding real features feedback profile and unique sequence number is saved in database；

A2, the characteristic vector calculating the real features feedback profile data corresponding with each RF tag, Save it in database；And the real features feedback profile corresponding with its RF tag sequence number One_to_one corresponding.

The described method for anti-counterfeit based on RF tag, wherein, described step C specifically includes:

C1, the feature calculating the profile feedback curve data of this RF tag of need to telling truth from falsehood receiving Vector；

C2, Land use models recognition methods, RF tag profile feedback of telling truth from falsehood the need receiving is bent In the characteristic vector of line data and database storage with its sequence number corresponding real features feedback profile The characteristic vector of data, compares judgement；

C3, when the need receiving tell truth from falsehood RF tag profile feedback curve data characteristic vector with The difference of the characteristic vector with its sequence number corresponding real features feedback profile data of storage in database During less than a predetermined threshold, then it is assumed that this RF tag that need to tell truth from falsehood is legal, is otherwise illegal Or personation.

A kind of Antiforge system based on RF tag, including the anti-pseudo-terminal with RF tag, wherein, Also include:

Server, for storage and each RF tag corresponding real features curve in database in advance；

The examination terminal being connected with described anti-pseudo-terminal and described server communication respectively, is on the one hand used for When need to distinguish described with the true and false of the anti-pseudo-terminal of RF tag when, to the radio frequency of described anti-pseudo-terminal Label is launched one group of specific electromagnetic wave and is entered row energization, receives the RF tag of described anti-pseudo-terminal simultaneously The radiofrequency signal feeding back to, obtains a stack features feedback profile and sends to described server；

Described server is additionally operable to the profile feedback of the RF tag of the described anti-pseudo-terminal receiving bent Prestore in line and database compares with its RF tag corresponding real features curve；When Judge both differences in a predetermined scope, then it is assumed that this RF tag is legal, and will This legal information sends to examination terminal；And it is predetermined when judging that both differences exceed described one During scope, then it is assumed that this RF tag is illegal or personation and this is illegal or personation information sends extremely Check and accept terminal；

Described examination terminal is additionally operable to produce phase according to described legal information with described illegal or personation information The identification result answered.

The described Antiforge system based on RF tag, wherein, described server farther includes:

Receiver module, for receiving the profile feedback curve that described false proof terminal radio frequency tag feedback is returned；

Computing module, for calculating the characteristic vector of the described profile feedback curve data receiving；

Comparison module, is used for Land use models recognition methods, the described profile feedback curve number that will receive According to the feature of characteristic vector real features feedback profile data corresponding with RF tag in database Vector, compares judgement；

Identification module, for the characteristic vector of described profile feedback curve data that receives and database Gap between the characteristic vector of the corresponding real features feedback profile data of middle RF tag is less than one During predetermined threshold, then it is assumed that this RF tag is legal；When gap between the two is more than described pre- When determining threshold value, then it is assumed that be illegal or personation label.

The described Antiforge system based on RF tag, it is characterised in that described specific electromagnetic wave be with In the range of point centered on the intrinsic frequency of RF tag, certain frequency, the fixing electromagnetic wave of emitted energy.

Method for anti-counterfeit based on RF tag provided by the present invention and Antiforge system, provide a kind of difficulty With the method for anti-counterfeit extracting and using RF tag characteristic information counterfeiting, that distort, penetrated by extracting The indicatrix information that frequency marking label show under specific incentives Electromagnetic Field confirms the difference of article Property feature, then the real features diagram database of RF tag indicatrix be set, differentiate that article are true When pseudo-, by carrying out the indicatrix of RF tag to be verified with the real features curve in database Relatively so that it is determined that the authenticity of RF tag to be verified.There is unclonable advantage, be greatly improved Security.

Brief description

Fig. 1 is the method for anti-counterfeit flow chart based on RF tag of the embodiment of the present invention；

Fig. 2 is the Antiforge system structural representation based on RF tag of the embodiment of the present invention；

Fig. 3 is the server concept block diagram of the Antiforge system of the embodiment of the present invention.

Detailed description of the invention

The invention provides a kind of method for anti-counterfeit based on RF tag and Antiforge system, for making the present invention Purpose, technical scheme and advantage clearer, clear and definite, the embodiment that develops simultaneously referring to the drawings to this Invention further describes.It should be appreciated that specific embodiment described herein only in order to explain The present invention, is not intended to limit the present invention.

A kind of method for anti-counterfeit based on RF tag that the embodiment of the present invention is provided, mainly proposes one Plant and be difficult to the method for anti-counterfeit extracting and using RF tag characteristic information counterfeiting, that distort, by carrying Take the indicatrix information that RF tag shows under specific incentives Electromagnetic Field and confirm article Distinctive feature, then arranges the real features diagram database of RF tag indicatrix, differentiates thing During the product true and false, by by the indicatrix of RF tag to be verified and the real features curve in database Compare so that it is determined that the authenticity of RF tag to be verified.

As it is shown in figure 1, based on the method for anti-counterfeit of RF tag described in embodiment 1, comprise the following steps:

Step S110, in advance storage and each RF tag corresponding real features curve in database； I.e. carry out false proof before first to gather the real features curve of the false proof RF tag of each need.

Such as, first with specific electromagnetic wave, row energization is entered to each RF tag, obtain penetrating with each The corresponding real features feedback profile of frequency marking label, and by the true spy corresponding with each RF tag Levy feedback profile to be saved in database.

Calculate simultaneously the feature of real features feedback profile data corresponding with each RF tag to Amount, saves it in database；And the real features feedback profile one corresponding with its RF tag One is corresponding.

Wherein, it is preferred that mahalanobis distance formula can be used to calculate is corresponding with each RF tag The characteristic vector of real features feedback profile data, such as according to mahalanobis distance formula

$D_{\mathrm{ij}}^2={(X_i-X_j)}^T{S}^{-1}(X_i-X_j)$

$S=\frac{1}{N-1}\underset{i=1}{\overset{N}{\mathrm{\Σ}}}(X_i-\stackrel{\‾}{X}){(X_i-\stackrel{\‾}{X})}^T$

$\stackrel{\‾}{X}=\frac{1}{N}\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{X}_i$

Wherein,

D_ijRepresent the mahalanobis distance of i-th sample and j-th sample；

X_i、X_jRepresent the vector of the ith and jth sample being made up of N number of index；

Represent the average of vector X；

S represents the covariance matrix of sample X.

Calculate its mahalanobis distance and store to database, and the feature corresponding with RF tag is bent Line one_to_one corresponding.

RF tag (Radio Frequency Tag is called for short RF TAG) in the embodiment of the present invention is Refer to the miniature label being made up of IC chip and radio antenna module.It is commonly referred to as RFID (nothing Line REID, Radio Frequency Identification, it is called for short RFID) label.And EAS (Electronic Article Surveillance, Electronic Article Surveillance are called for short EAS), label was as one Planting the RFID label tag simplifying, it does not have IC chip, only has wireless communication module.RF tag Energy supply be divided into active, semi-active and passive Three models.RF tag in this invention includes Active, semi-active and passive RFID label tag and eas tag.

Wherein, for eas tag and RFID label tag, this described specific electromagnetic wave is with radio frequency mark Point centered on the natural resonance frequency signed, in the range of certain frequency, fixing the first excitation of emitted energy Electromagnetic wave.I.e. specific incentives electromagnetic wave in the present embodiment 1 may refer to have certain energy, frequency Scope a range of first Excitation Electromagnetic Wave near above-mentioned RF tag intrinsic frequency.For example, Assuming there is a RF tag, its intrinsic frequency is 13.56Mhz, then for this RF tag, it is specific First Excitation Electromagnetic Wave can be energy be-10dbm, frequency from 10Mhz initiate, step-length is 0.02Mhz, the one group of electromagnetic wave terminating to 17Mhz.Data in upper example may be according to actual conditions Different and different, but frequency range is point centered on the intrinsic frequency of RF tag certainly, works as excitation When the frequency of electromagnetic wave is equal to its intrinsic frequency, also referred to as this frequency is resonant frequency.

Step S120, when needing the true and false distinguishing RF tag, to the RF tag that need to tell truth from falsehood Launch one group of specific electromagnetic wave and enter row energization, receive this RF tag of need to telling truth from falsehood simultaneously and feed back to Radiofrequency signal, obtain a stack features feedback profile.

Such as, when needs distinguish this RF tag true and false, with a handheld device (for example checking and accepting terminal) Launch one group of specific electromagnetic wave and row energization is entered to this RF tag, use this handheld device to receive simultaneously The radiofrequency signal that this RF tag feeds back to, obtains the profile feedback curve of one group of this RF tag, so The related data of this feature feedback profile is sent to backstage by rear handheld device by wired or wireless network Application server.

Step S130, the profile feedback curve of RF tag that this receiving need to be told truth from falsehood and data Prestore in storehouse compares with this RF tag corresponding real features curve of need to telling truth from falsehood； When judging both differences in a predetermined scope, then it is assumed that this RF tag is legal.

Such as, connect noted earlier, after background application server receives the related data of profile feedback curve, Can for example calculate this mahalanobis distance receiving data, and and database with Land use models recognition methods The characteristic vector of each RF tag of middle storage compares, and such as compares their mahalanobis distance.When Gap between the characteristic vector of storage in the characteristic vector of the data receiving and database is less than certain threshold Value, for example, we select mahalanobis distance D=0.01 as threshold value, then when the feature of the data receiving When mahalanobis distance between the characteristic vector of storage in vector and database is less than 0.01, then it is assumed that this radio frequency Label is legal.Otherwise enter step S140.

Step S140, when the real features judging the profile feedback curve receiving and prestore bent When the difference of line exceedes described one predetermined scope, then it is assumed that this RF tag is illegal or personation.

It is above the first embodiment of the method for anti-counterfeit based on RF tag of the present invention, be the first It method for anti-counterfeit, is aimed at eas tag and RFID label tag, use centered on launching resonant frequency First electromagnetic wave with fixed energies in one segment limit, obtains distinguishing that the feature of RF tag is anti- Feedback curve, then compare with all real curve in database, if certain real curve with should The difference that need to distinguish curve is exactly legal in certain predetermined threshold, otherwise illegally.

Embodiment 2 is the second method for anti-counterfeit based on RF tag for the present invention, and it is former with first embodiment Manage essentially identical, described unlike: embodiment 2 uses when described frequency marking label are RFID label tag, Described specific electromagnetic wave is point, certain frequency scope centered on the natural resonance frequency of RF tag Interior, emitted energy is fixed and by the second Excitation Electromagnetic Wave of amplitude modulation.

The embodiment of the present invention 2 is primarily directed to RFID label tag, one section of model centered on transmitting resonant frequency The electromagnetic wave with fixed energies in enclosing obtains feedback profile, and tranmitting frequency is the resonance of RF tag Frequency and the second Excitation Electromagnetic Wave by (that is the carrying some digital information) of amplitude modulation, To the unique sequence numbers of this RFID tag, then in database corresponding with this sequence number truly Curve compares, and difference is just legal less than predetermined threshold, otherwise illegal or personation.

Method for anti-counterfeit described in embodiment 2 specifically comprises the following steps that

The first step: row energization is entered to each RF tag with described second Excitation Electromagnetic Wave, obtain with respectively The corresponding real features feedback profile of individual RF tag and unique sequence number thereof, and will penetrate with each The corresponding real features feedback profile of frequency marking label and unique sequence number thereof are saved in database.

Second step, the feature calculating the real features feedback profile data corresponding with each RF tag Vector, saves it in database；And the real features corresponding with its RF tag sequence number is anti- Feedback curve one_to_one corresponding.

3rd step, when needing the true and false distinguishing RF tag, send out to the RF tag that need to tell truth from falsehood Penetrate one group of second Excitation Electromagnetic Wave and enter row energization, receive this RF tag of need to telling truth from falsehood simultaneously and feed back to Radiofrequency signal, obtain a stack features feedback profile

4th step: calculate the profile feedback curve data of this RF tag of need to telling truth from falsehood receiving Characteristic vector.

5th step, Land use models recognition methods, RF tag feature of telling truth from falsehood the need receiving is anti- The feedback of the corresponding real features with its sequence number of storage in the characteristic vector of feedback curve data and database The characteristic vector of curve data, compares judgement.

6th step, tell truth from falsehood the characteristic vector of RF tag profile feedback curve data when the need receiving With in database storage with the characteristic vector of its sequence number corresponding real features feedback profile data it When difference is less than a predetermined threshold, then it is assumed that this RF tag that need to tell truth from falsehood is legal, otherwise right and wrong Method or personation.

Therefore, the valid data of the RF tag that above-described embodiment 1 and embodiment 2 can be judged Or this conclusion is sent back handheld device by background application server by illegal or personation data (for example checking and accepting terminal etc.)；And after handheld device receives the data that background application server returns, It shows screen display identification result.To reach to differentiate described RF tag or to carry this RF tag equipment True and false purpose.

Handheld device in above-described embodiment refers to: has transmitting, receive prescribed energy, frequency range Electromagnetic wave, it is possible to carry out telecommunication by wirelessly or non-wirelessly network, can carry out various parameter and set Put and with display screen and battery, be convenient for carrying, a kind of equipment of hand-held.Easily to described RF tag detects.

Based on a kind of method for anti-counterfeit based on RF tag of above-described embodiment, the embodiment of the present invention also carries Supply a kind of Antiforge system based on RF tag, as in figure 2 it is shown, include with RF tag is false proof Terminal 100, the terminal that this anti-pseudo-terminal can be told truth from falsehood for multiple need, such as various access cards etc., As long as being provided with RF tag in it, so that it may be used in the inventive method and detect.

As in figure 2 it is shown, described Antiforge system also includes: check and accept terminal 200 and server 300

Described server 300, for storage and the corresponding true spy of each RF tag in database in advance Levy curve.

Described examination terminal 200, can be holding equipment on the other hand, respectively with described anti-pseudo-terminal 100 and institute Stating server 300 communication to connect, for example described examination terminal 200 is by electromagnetic wave and described band radio frequency On the one hand anti-pseudo-terminal 100 communication of label, for when needing to distinguish described false proof with RF tag During the true and false of terminal 100, launch one group of specific electromagnetism to the RF tag of described anti-pseudo-terminal 100 Ripple enters row energization, receives the radiofrequency signal that the RF tag of described anti-pseudo-terminal 100 feeds back to simultaneously, Obtain a stack features feedback profile and sent to described server 300 by wired or wireless network.

Described server 300, can include background application server and database server, be mainly used in By in the profile feedback curve of the RF tag of described anti-pseudo-terminal 100 that receives and database in advance Comparing with its RF tag corresponding real features curve of storage；When judging both differences In a predetermined scope, then it is assumed that this RF tag is legal, and this legal information is sent extremely Check and accept terminal 200；And when the difference judging both exceedes described one predetermined scope, then it is assumed that This RF tag is illegal or palms off, and this is illegal or personation information transmission is to examination terminal 200；

Described examination terminal 200 can also be produced with described illegal or personation information according to described legal information Raw corresponding identification result, for example, show described identification result by display module.

As it is shown on figure 3, described server 300 farther includes:

Receiver module 310, for receiving the profile feedback song that described false proof terminal radio frequency tag feedback is returned Line；

Computing module 320, for calculating the characteristic vector of the described profile feedback curve data receiving；

Comparison module 330, is used for Land use models recognition methods, the described profile feedback curve that will receive The spy of the characteristic vector of the data real features feedback profile data corresponding with RF tag in database Levy vector, compare judgement；

Identification module 340, for the characteristic vector of described profile feedback curve data that receives and data In storehouse the real features feedback profile data that RF tag is corresponding characteristic vector between gap be less than During one predetermined threshold, then it is assumed that this RF tag is legal；When gap between the two is more than described During predetermined threshold, then it is assumed that be illegal or personation label.

Further, described server also includes sending module 350, for by the conjunction of described RF tag Method data, illegal or personation data are sent to described examination terminal 200.

Wherein, described based in the Antiforge system of RF tag in the present embodiment, described specific electricity Magnetic wave is point, the electromagnetic wave in the range of certain frequency centered on the intrinsic frequency of RF tag.

Method for anti-counterfeit based on RF tag provided by the present invention and Antiforge system, provide one and be difficult to The method for anti-counterfeit extracting and using RF tag characteristic information counterfeiting, that distort, by extracting radio frequency The indicatrix information that label shows under specific incentives Electromagnetic Field confirms the distinctiveness of article Feature, then arranges the real features diagram database of RF tag indicatrix, differentiates article genuine-fake When, by comparing the indicatrix of RF tag to be verified with the real features curve in database Relatively so that it is determined that the authenticity of RF tag to be verified.There is unclonable advantage, substantially increase Security.

It should be appreciated that the application of the present invention is not limited to above-mentioned citing, to ordinary skill For personnel, can be improved according to the above description or convert, all these modifications and variations are all answered Belong to the protection domain of claims of the present invention.

Claims (6)

1. the method for anti-counterfeit based on RF tag, it is characterised in that include step:

A, in advance storage and each RF tag corresponding real features curve in database；

B, when needing the true and false distinguishing RF tag, launch one group of specific electromagnetic wave to the RF tag that need to tell truth from falsehood and enter row energization, receive the radiofrequency signal that this RF tag of need to telling truth from falsehood feeds back to simultaneously, obtain a stack features feedback profile；

C, RF tag that this receiving need to be told truth from falsehood profile feedback curve and database in the real features curve that prestores compare；It when judging both differences in a predetermined scope, then it is assumed that this RF tag is legal, is otherwise illegal or personation；

When described RF tag is RFID label tag, described specific electromagnetic wave be centered on the natural resonance frequency of RF tag point, in the range of certain frequency, emitted energy fixes and by the second Excitation Electromagnetic Wave of amplitude modulation；

Described step A specifically includes step:

A1, with described second Excitation Electromagnetic Wave, row energization is entered to each RF tag, obtain the real features feedback profile corresponding with each RF tag and unique sequence number thereof, and be saved in the real features feedback profile corresponding with each RF tag and unique sequence number thereof in database；

A2, the characteristic vector calculating the real features feedback profile data corresponding with each RF tag, save it in database；And the real features feedback profile one_to_one corresponding corresponding with its RF tag sequence number；

Mahalanobis distance formula is used to calculate the characteristic vector of the real features feedback profile data corresponding with each RF tag；

Described step C specifically includes:

C1, the characteristic vector calculating the profile feedback curve data of this RF tag of need to telling truth from falsehood receiving；

C2, Land use models recognition methods, the characteristic vector of RF tag profile feedback curve data of telling truth from falsehood the need receiving and the characteristic vector with its sequence number corresponding real features feedback profile data of storage in database, compare judgement；

Calculate this need receiving to tell truth from falsehood the mahalanobis distance of RF tag profile feedback curve data, and and database in the characteristic vector of each RF tag of storage compare, compare both mahalanobis distances；

C3, when the need receiving tell truth from falsehood RF tag profile feedback curve data characteristic vector and database in the difference of the characteristic vector with its sequence number corresponding real features feedback profile data of storage less than a predetermined threshold when, then think that this RF tag that need to tell truth from falsehood is legal, be otherwise illegal or personation；

When needs distinguish this RF tag true and false, with one group of specific electromagnetic wave of a handset transmissions, row energization is entered to this RF tag, use this handheld device to receive the radiofrequency signal that this RF tag feeds back to simultaneously, obtaining the profile feedback curve of one group of this RF tag, then this feature feedback profile data are sent to background application server by handheld device by wired or wireless network；

After background application server receives profile feedback curve data, Land use models recognition methods, calculate this mahalanobis distance receiving data, and and database in the characteristic vector of each RF tag of storage compare, compare both mahalanobis distances；It when mahalanobis distance when between the characteristic vector of storage in the characteristic vector and database of the data receiving is less than predetermined threshold, then it is assumed that this RF tag that need to tell truth from falsehood is legal, is otherwise illegal or personation；

This conclusion is sent back handheld device by background application server by the valid data of the RF tag that will determine that or illegal or personation data；And after handheld device receives the data that background application server returns, show screen display identification result at it；

Described predetermined threshold is 0.01；It when mahalanobis distance when between the characteristic vector of storage in the characteristic vector and database of the data receiving is less than 0.01, then it is assumed that this RF tag is legal, is otherwise illegal or personation；

Described handheld device refers to: has transmitting, receive prescribed energy, the electromagnetic wave of frequency range, it is possible to carries out telecommunication by wirelessly or non-wirelessly network, can carry out various parameter setting the equipment with display screen and battery.

2. according to claim 1 based on the method for anti-counterfeit of RF tag, it is characterised in that described specific electromagnetic wave be centered on the natural resonance frequency of RF tag point, in the range of certain frequency, fixing the first Excitation Electromagnetic Wave of emitted energy.

3. according to claim 2 based on the method for anti-counterfeit of RF tag, it is characterised in that described step A specifically includes step:

A1, with described first Excitation Electromagnetic Wave, row energization is entered to each RF tag, obtain the real features feedback profile corresponding with each RF tag, and be saved in the real features feedback profile corresponding with each RF tag in database；

A2, the characteristic vector calculating the real features feedback profile data corresponding with each RF tag, save it in database；And the real features feedback profile one_to_one corresponding corresponding with its RF tag.

4. according to claim 3 based on the method for anti-counterfeit of RF tag, it is characterised in that described step C specifically includes:

C1, the characteristic vector calculating the profile feedback curve data of this RF tag of need to telling truth from falsehood receiving；

C2, Land use models recognition methods, the characteristic vector of RF tag profile feedback curve data of telling truth from falsehood the need receiving and the characteristic vector of all of real features feedback profile data in database, compare judgement；

C3, when the difference of characteristic vector of characteristic vector and certain real features curve of the profile feedback curve data receiving is less than a predetermined threshold, then it is assumed that this RF tag that need to tell truth from falsehood is legal, is otherwise illegal or personation.

5. the Antiforge system based on RF tag, including the anti-pseudo-terminal with RF tag, it is characterised in that also include:

Server, for storage and each RF tag corresponding real features curve in database in advance；

The examination terminal being connected with described anti-pseudo-terminal and described server communication respectively, on the one hand for when need to distinguish described with the true and false of the anti-pseudo-terminal of RF tag when, launch one group of specific electromagnetic wave to the RF tag of described anti-pseudo-terminal and enter row energization, receive the radiofrequency signal that the RF tag of described anti-pseudo-terminal feeds back to simultaneously, obtain a stack features feedback profile and send to described server；

Described server is additionally operable to compare prestore in the profile feedback curve of the RF tag of the described anti-pseudo-terminal receiving and database with its RF tag corresponding real features curve；When judging both differences in a predetermined scope, then it is assumed that this RF tag is legal, and this legal information is sent to checking and accepting terminal；And when the difference judging both exceedes described one predetermined scope, then it is assumed that this RF tag is illegal or palms off, and this is illegal or personation information transmission is to examination terminal；

Described examination terminal is additionally operable to according to described legal information is illegal with described or personation information produces corresponding identification result；

Described server farther includes:

Receiver module, for receiving the profile feedback curve that described false proof terminal radio frequency tag feedback is returned；

Computing module, for calculating the characteristic vector of the described profile feedback curve data receiving；

Comparison module, is used for Land use models recognition methods, by the characteristic vector of real features feedback profile data corresponding with RF tag in database for the characteristic vector of the described profile feedback curve data receiving, compares judgement；

Identification module, when the gap between the characteristic vector of the real features feedback profile data corresponding with RF tag in database of the characteristic vector of described profile feedback curve data for receiving is less than a predetermined threshold, then it is assumed that this RF tag is legal；When gap between the two is more than described predetermined threshold, then it is assumed that be illegal or personation label；

When described RF tag is RFID label tag, described specific electromagnetic wave be centered on the natural resonance frequency of RF tag point, in the range of certain frequency, emitted energy fixes and by the second Excitation Electromagnetic Wave of amplitude modulation；

Each RF tag is entered row energization with described second Excitation Electromagnetic Wave by described examination terminal, obtain the real features feedback profile corresponding with each RF tag and unique sequence number thereof, and be saved in the real features feedback profile corresponding with each RF tag and unique sequence number thereof in database；Calculate the characteristic vector of the real features feedback profile data corresponding with each RF tag, save it in database；And the real features feedback profile one_to_one corresponding corresponding with its RF tag sequence number；Mahalanobis distance formula is used to calculate the characteristic vector of the real features feedback profile data corresponding with each RF tag；

Described server calculates the characteristic vector of the profile feedback curve data of this RF tag of need to telling truth from falsehood receiving；Land use models recognition methods, the characteristic vector of RF tag profile feedback curve data of telling truth from falsehood the need receiving and the characteristic vector with its sequence number corresponding real features feedback profile data of storage in database, compare judgement；Calculate this need receiving to tell truth from falsehood the mahalanobis distance of RF tag profile feedback curve data, and and database in the characteristic vector of each RF tag of storage compare, compare both mahalanobis distances；When the need receiving tell truth from falsehood RF tag profile feedback curve data characteristic vector and database in the difference of the characteristic vector with its sequence number corresponding real features feedback profile data of storage less than a predetermined threshold when, then think that this RF tag that need to tell truth from falsehood is legal, be otherwise illegal or personation；

When needs distinguish this RF tag true and false, with one group of specific electromagnetic wave of a handset transmissions, row energization is entered to this RF tag, use this handheld device to receive the radiofrequency signal that this RF tag feeds back to simultaneously, obtaining the profile feedback curve of one group of this RF tag, then this feature feedback profile data are sent to background application server by handheld device by wired or wireless network；

After background application server receives profile feedback curve data, Land use models recognition methods, calculate this mahalanobis distance receiving data, and and database in the characteristic vector of each RF tag of storage compare, compare both mahalanobis distances；It when mahalanobis distance when between the characteristic vector of storage in the characteristic vector and database of the data receiving is less than predetermined threshold, then it is assumed that this RF tag that need to tell truth from falsehood is legal, is otherwise illegal or personation；

This conclusion is sent back handheld device by background application server by the valid data of the RF tag that will determine that or illegal or personation data；And after handheld device receives the data that background application server returns, show screen display identification result at it；

Described predetermined threshold is 0.01；It when mahalanobis distance when between the characteristic vector of storage in the characteristic vector and database of the data receiving is less than 0.01, then it is assumed that this RF tag is legal, is otherwise illegal or personation；

Described handheld device refers to: has transmitting, receive prescribed energy, the electromagnetic wave of frequency range, it is possible to carries out telecommunication by wirelessly or non-wirelessly network, can carry out various parameter setting the equipment with display screen and battery.

6. according to claim 5 based on the Antiforge system of RF tag, it is characterised in that described specific electromagnetic wave be centered on the intrinsic frequency of RF tag point, in the range of certain frequency, the fixing electromagnetic wave of emitted energy.