CN110321742A

CN110321742A - A kind of method and detection device detecting electronic tag

Info

Publication number: CN110321742A
Application number: CN201810292030.2A
Authority: CN
Inventors: 徐涵; 谌金豆
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2019-10-11
Anticipated expiration: 2038-03-30
Also published as: CN110321742B

Abstract

The application provides a kind of method and detection device for detecting electronic tag, the available parameter value of detection device in this method, the parameter value includes the distance between the first phase value of at least one electronic tag, reader and at least one described electronic tag, and the first phase value is the phase value measured when the reader is received from the signal of at least one electronic tag.Detection device inquires the first attribute information of at least one electronic tag from pre-stored attribute information, it include the first attribute information of different electronic tags in the attribute information, first attribute information includes first phase deviation, and the first phase deviation of different electronic tags is different.And then detection device can parameter value based on acquisition and at least one electronic tag described in inquiring the first attribute information, obtain at least one check value, and using at least one described check value, verify the true and false of at least one electronic tag.

Description

A kind of method and detection device detecting electronic tag

Technical field

This application involves field of communication technology more particularly to a kind of methods and detection device for detecting electronic tag.

Background technique

Radio frequency identification (radio frequency identification, RFID) technology is a kind of wireless communication skill Art can identify specific objective by wireless signal and read and write related data, without established between specific objective it is mechanical or Person's optical contact.Most basic RFID system consists of three parts: electronic tag, reader, antenna.Specifically, reader can To send the signal carried to the inquiry instruction of electronic tag to electronic tag by built-in antenna.Into reader workspace The electronic tag in domain can receive the signal of reader transmission, and carry number of tags to reader feedback by built-in antenna According to signal.

Currently, RFID technique can be applicable in anti-counterfeit field, for example, can realize in article transmission process to article It is anti-fake.Specifically, sender can configure electronic tag on needing anti-fake target item, it is stored in each electronic tag Unique sequence number records the corresponding relationship of the description information of target item and the sequence number of electronic tag in the database, and The corresponding relationship of record is notified to recipient.Further, recipient is after receiving target item, can use reader to Electronic tag on target item sends wireless signal, wherein the inquiry instruction of the sequence number for inquiring electronic tag is carried, Reader receive electronic tag feedback carry the wireless signal of sequence number after, can by comparison reader it is received Whether the sequence number corresponding with the target item stored in sequence number and database consistent, configures on target item to determine Whether electronic tag is forged, and thus can determine that whether target item is true.However, with the continuous development of the communication technology, The sequence number for forging electronic tag is no longer difficult matter, therefore the true and false of electronic tag is verified based on the sequence number of electronic tag, The accuracy of verification result is lower.

Summary of the invention

The application provides a kind of method and detection device for detecting electronic tag, with the true and false of raising verifying electronic tag Accuracy.

In a first aspect, the application provides a kind of method for detecting electronic tag, this method can be executed by detection device, In, detection device can establish the terminal of communication connection for reader or with reader.Specifically, detection device obtains ginseng Numerical value, the parameter value include the first phase value of at least one electronic tag, reader and at least one described electronic tag The distance between, the first phase value is that the reader receives survey when from the signal of at least one electronic tag The phase value measured.Further, detection device inquires at least one described electronic tag from pre-stored attribute information The first attribute information, include the first attribute information of different electronic tags, first attribute information in the attribute information Including first phase deviation, the first phase deviation of different electronic tags is different.Further, detection device can be based on First attribute information of the parameter value of acquisition and at least one electronic tag inquired, obtains at least one verification Value, and using at least one described check value, verify the true and false of at least one electronic tag.

In the above method, what detection device measured when can receive the signal from electronic tag by analysis reader The digital baseband input signal equiphase information of phase value and electronic tag, to verify the electronic tag true and false.Since phase information is difficult It is forged, the accuracy of verification result can be made higher, and carried out based on the phase information that electronic tag itself has Fake certification can be with save the cost without making more change to electronic tag and reader.

In a kind of possible design, at least one described electronic tag can be an electronic tag.In this case, The attribute information can also include the second attribute information of different readers, and second attribute information includes that second phase is inclined The wavelength for the signal that difference and reader are sent to one electronic tag, the second phase deviation of different readers is not Together.

Specifically, detection device can inquire the first category of one electronic tag from pre-stored attribute information Second attribute information of property information and the reader.Further, detection device can parameter value based on acquisition and First attribute information of the one electronic tag inquired and the second attribute information of the reader calculate one The check value of electronic tag.And then detection device can compare the check value of calculating and the first phase of one electronic tag Difference between value verifies the true and false of one electronic tag.

Wherein, detection device can calculate the check value θ of one electronic tag according to the following formula:

Wherein, λ is the wavelength, and d is the distance between the reader and one electronic tag, θ_tagIt is described The first phase deviation of one electronic tag, θ_readerFor the second phase deviation.

In above-mentioned design, detection device can use the first phase deviation of pre-stored electronic tag and read The second phase deviation of device is read to calculate check value, the check value of calculating can characterize reader and receive from electronic tag Signal when the phase value that should theoretically measure therefore pass through and arrive the check value of calculating and reader actual measurement The first phase value of the electronic tag compares, and the verifying to the true and false of electronic tag may be implemented.

In a kind of possible design, at least one described electronic tag can be at least two electronic tags.This feelings Under condition, the attribute information can also include the second attribute information of different readers, and second attribute information includes reading The wavelength for the signal that device is sent at least two electronic tag.

Specifically, detection device can inquire the of at least two electronic tag from pre-stored attribute information Second attribute information of one attribute information and the reader.Further, detection device can parameter value based on acquisition, And at least two electronic tag inquired the first attribute information and the reader the second attribute information, calculate The check value of at least two electronic tag.And then detection device can at least two electronic tag check value Difference between the check value of middle any two electronic tag verifies the true and false of at least two electronic tag.

Wherein, detection device can calculate i-th of electronic tag at least two electronic tag according to the following formula Check value θ_i:

Wherein, λ is the wavelength, d_iFor the distance between the reader and i-th of electronic tag, θ_tag,iFor institute State the first phase deviation of i-th of electronic tag, θ_measure,iFor the first phase value of i-th of electronic tag, i is positive Integer.

In above-mentioned design, the first phase of the signal from least two electronic tags is measured respectively using same reader Value, due to the influence of reader bring be it is fixed, therefore detection device according to the parameter value of acquisition and the first attribute information and Second attribute information, the check value for calculating at least two electronic tags can reflect out the second phase deviation of reader, And theoretically the corresponding check value of each electronic tag should be almost the same at least two electronic tags.Therefore, it examines Device is surveyed by comparing the check value of any two electronic tag in the check value of at least two electronic tags, may be implemented to extremely The verifying of the true and false of few two electronic tags.

In a kind of possible design, at least one described electronic tag can be at least three electronic tags.This feelings Under condition, detection device can inquire the first attribute letter of at least three electronic tag from pre-stored attribute information Breath.Further, detection device can calculate the second phase value of at least three electronic tag, at least three electronics First phase value and j-th electronics of the second phase value of j-th of electronic tag for j-th of electronic tag in label Difference between the first phase deviation of label, j are positive integer.Further, detection device can calculate described at least three Difference in the second phase value of a electronic tag between the second phase value of every two electronic tag, according to the difference of calculating, Calculate the distance between the reader and at least three electronic tag.Later, detection device can compare acquisition away from Difference between at a distance from calculating verifies the true and false of at least three electronic tag.

In above-mentioned design, the first phase of the signal from least three electronic tags is measured respectively using same reader Value, according to the first phase value of electronic tag and first phase deviation can determine electronic tag second phase value, And second phase value can reflect out the distance between electronic tag and reader, and then according to every at least three electronic tags Difference between the second phase value of two electronic tags can deduce theoretical between reader and at least three electronic tags On distance may be implemented by comparing the distance that actually gets and theoretic distance at least three electronic tags The verifying of the true and false.

In a kind of possible design, the attribute information further includes the identification information of different electronic tags and electronics mark The identification information and first phase deviation of label correspond.

It further include at least one electronics mark described in that the reader receives in the parameter value that detection device obtains The identification information of at least one electronic tag carried in the signal of label.Detection device is in the parameter based on the acquisition First attribute information of value and at least one electronic tag inquired can be with before obtaining at least one check value Confirm the identification information comprising at least one electronic tag in the attribute information, first to detect at least one electricity Whether the identification information of subtab is legal.

Second aspect, the application provide a kind of detection device, and the detection device can be what above-mentioned first aspect was related to Reader or be with reader establish communication connection terminal, the chip being also possible in reader or terminal.The reading Device or the terminal or the chip, which have in the above-mentioned first aspect of realization or the arbitrarily possible design of first aspect, executes inspection Survey function involved in electronic tag.The function can also execute corresponding software by hardware realization by hardware It realizes.The hardware or software include one or more units corresponding with above-mentioned function.

In a kind of possible design, the detection device may include that acquiring unit, storage unit and processing are single Member.Specifically, acquiring unit can be used for the value that gets parms, the parameter value includes the first phase of at least one electronic tag The distance between value, reader and at least one described electronic tag, the first phase value are that the reader receives The phase value measured when from the signal of at least one electronic tag.Storage unit can be used for attribute information storage, institute The first attribute information that attribute information includes different electronic tags is stated, first attribute information includes first phase deviation, The first phase deviation of different electronic tags is different.It is described at least that processing unit can be used for the inquiry from the storage unit First attribute information of one electronic tag；The parameter value that is obtained based on the acquiring unit and described in inquiring at least First attribute information of one electronic tag, obtains at least one check value；Using at least one described check value, described in verifying The true and false of at least one electronic tag.

Wherein, the function that above-mentioned each unit specifically executes can be related to above-mentioned first aspect or first aspect it is any can The step of detection device execution detection electronic tag, is corresponding in the design of energy, and it will not be described here.

In alternatively possible design, the detection device may include processor, memory and communication interface.Institute Memory is stated for coupling with the processor, saves realize above-mentioned first aspect or the arbitrarily possible design of first aspect thereon Involved in detection electronic tag method necessary to computer instruction and/or data.The processor can be read and execute The computer instruction and/or data of memory storage complete above-mentioned first aspect and first aspect are any possible sets The method of the detection electronic tag executed in meter.The communication interface can obtain under the control of the processor and execute detection Parameter value needed for the method for electronic tag, so as to the processor based on the parameter value obtained by the communication interface, with And the instruction and/or data stored in memory, it completes to hold in the arbitrarily possible design of above-mentioned first aspect and first aspect The method of capable detection electronic tag.Optionally, the memory can be integrated with the processor, can also be with institute It is separately positioned to state processor.

The third aspect, the application provide a kind of computer storage medium, calculating are stored in the computer storage medium Machine executable instruction, the computer executable instructions are above-mentioned for completing the computer when being called by the computer The method of the detection electronic tag executed in first aspect or the arbitrarily possible design of first aspect.

Fourth aspect, the application provide a kind of computer program product, include computer in the computer program product Program, the computer program complete inspection involved in any possible design in above-mentioned first aspect or first aspect for executing The method for surveying electronic tag.

Detailed description of the invention

Fig. 1 is the configuration diagram of RFID system provided by the present application；

Fig. 2 is the flow diagram of the method for detection electronic tag provided by the embodiments of the present application；

Fig. 3 is application scenarios schematic diagram provided by the embodiments of the present application；

Fig. 4 is the flow diagram provided by the embodiments of the present application that electronic tag is detected in the case of the first；

Fig. 5 is the flow diagram that electronic tag is detected under second situation provided by the embodiments of the present application；

Fig. 6 is the flow diagram provided by the embodiments of the present application that electronic tag is detected in the case of the third；

Fig. 7 is that the geometry of determining reader provided by the embodiments of the present application and the distance between at least three electronic tags shows It is intended to；

Fig. 8 is a kind of structural schematic diagram of detection device 800 provided by the embodiments of the present application；

Fig. 9 is the structural schematic diagram of another detection device 900 provided by the embodiments of the present application.

Specific embodiment

In order to keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with attached drawing to the application make into One step it is described in detail.

Firstly, being illustrated to the application RFID system framework applicatory.The framework of RFID system shown in referring to Fig.1 Schematic diagram, the RFID system include reader (reader), electronic tag (tag) and antenna (antenna).Wherein, antenna It is divided into reader antenna and two kinds of electronic label antenna.

Specifically, reader, also known as reader, are a kind of equipment of data that can obtain and handle electronic tag, It can be used as individual equipment, can also be embedded in other equipment or system.Reader can by reader antenna to Electronic tag sends radiofrequency signal, to inquire data or write-in data to electronic tag.Reader can also be connect by communication It mouthful connect with other terminal devices (for example, computer), and then is obtained by data that reader is locally stored or from electronic tag The data taken are transmitted in other terminal devices.

Electronic tag is a kind of miniature wireless transmitter, mainly includes built-in electronic label antenna, coupling element And chip.Having in chip can support reader to read or be written the memory space of label data.Electronic tag passes through electricity After subtab antenna receives the radiofrequency signal of reader transmission, the coupling to radiofrequency signal can be realized by coupling element, And then it may be implemented to provide energy to the chip of electronic tag in coupling channel and lead to the label data stored in chip It crosses electronic label antenna and feeds back to reader.

Currently, be only used for identifying the sequence number of the electronic tag because can store in electronic tag, therefore by electronics mark Label configuration can be identified for that the article on certain article, to realize the fake certification to article.However since electronic tag holds very much The sequence number stored in the sequence number and true electronic tag stored in the electronic tag for being easily forged, and forging can be done To completely the same, therefore, the sequence number of electronic tag is based only upon to verify the true and false, verification result accuracy is lower.On solving Problem is stated, this application provides a kind of methods and detection device for detecting electronic tag.

Before introducing method provided by the present application, the technical principle of method provided by the present application under introducing first.

Reader sends radiofrequency signal to electronic tag by reader antenna, and electronic label antenna captures radiofrequency signal Afterwards, the principle that can be coupled based on backscattering, provides energy using a part of radiofrequency signal for the chip of electronic tag, another Portion radio frequency signal carries label data and is reflected back reader.Reader is in the radiofrequency signal for receiving tag reflection time Afterwards, the phase value for the radiofrequency signal that tag reflection returns can be measured by built-in phase measurement cells.

It is found in the application by test analysis, using same reader and is guaranteeing the reader and same factory In the case that the distance between the same type of electronic tag of quotient's production is d, each electronics mark which measures The phase value for signing the radiofrequency signal being reflected back is not identical.And utilize different readers, and guarantee different readers with it is same In the case that the distance between a electronic tag is d, the radio frequency for the same tag reflection time that each reader measures The phase value of signal is not also identical.There is the reason of this phenomenon mainly since the individuality of electronic tag and reader is poor It is different.One systems such as environment when this individual sex differernce is by electronic tag and reader internal circuit, antenna and the manufacturing Column factor causes.Under the scene of the phase value for the radiofrequency signal that reader measurement tag reflection returns, this individuality is poor It is different to pass through the digital baseband input signal θ of electronic tag_tagAnd the digital baseband input signal θ of reader_readerTo characterize.

Also, theoretically analysis it can be concluded that, the received tag reflection of reader return radiofrequency signal phase The influence factor of value mainly includes that the wavelength for the radiofrequency signal that reader is sent is the distance between λ, reader and electronic tag For d, the digital baseband input signal θ of electronic tag_tagAnd the digital baseband input signal θ of reader_reader。

In conjunction with above-mentioned analysis, the embodiment of the present application provide a kind of digital baseband input signal for obtaining each electronic tag and The reference example of the digital baseband input signal of each reader:

On the basis of a certain reader, that is, assume the digital baseband input signal θ of the reader_reader=0, and guarantee the reader In the case that the distance between N number of electronic tag is d, for i-th of electronic tag in N number of electronic tag, if this is read The phase value for reading the radiofrequency signal that i-th of tag reflection that device measures returns is θ_measure,i, then in known θ_measure,i、 θ_reader, in the case where d and λ, can be according to following formula come the anti-digital baseband input signal θ for releasing i-th of electronic tag_tag,i:

On the basis of a certain electronic tag, that is, assume the digital baseband input signal θ of the electronic tag_tag=0, and guarantee N number of reading In the case that the distance between device and the electronic tag are d, for i-th of reader in N number of reader, if this i-th The phase value for the radiofrequency signal that the tag reflection that reader measures returns is θ_measure,i, then in known θ_measure,i、 θ_tag, in the case where d and λ, can be according to following formula come the anti-digital baseband input signal θ for releasing i-th of electronic tag_reader,i:

By the above process it can be concluded that the phase deviation of the digital baseband input signal of different electronic tags and different readers Value.In practical application, the process of the digital baseband input signal of the digital baseband input signal and reader of above-mentioned acquisition electronic tag can be by RFID device manufacturer, anti-fake service provider or third party complete.

In the embodiment of the present application, the digital baseband input signal of electronic tag can be considered as the individual sex differernce because of electronic tag And a kind of build-in attribute that electronic tag is had.Similarly, the digital baseband input signal of above-mentioned reader can also be considered as because readding A kind of build-in attribute read the individual sex differernce of device and reader is had.Also, in view of electronic tag and reader The digital baseband input signal of individual sex differernce, different electronic tags is substantially different, and the digital baseband input signal of different readers is basic It is also different.Based on this, the digital baseband input signal of the digital baseband input signal of electronic tag and reader can be applied right Electronic tag it is anti-fake on, and this digital baseband input signal generated by individual sex differernce can not be forged substantially.Therefore, base It carries out in the build-in attribute that electronic tag itself has to the anti-fake of electronic tag, accuracy is higher, excessive without expending Cost.

It describes in detail below to the method for detection electronic tag provided by the present application.

It can be reader for executing the detection device of method of detection electronic tag in the embodiment of the present application, it can also Think the terminal that communication connection is established with reader.The terminal be, for example, computer, mobile phone, tablet computer or it is other can Realize the equipment for establishing communication connection with reader.Furthermore, it is desirable to explanation, " first " hereinafter referred to, " second " etc. Ordinal number is, in order to describe, to be not used to limit the sequence of multiple objects, timing, excellent for distinguishing to multiple objects First grade or significance level.

It is specific to wrap for the flow diagram of the method for detection electronic tag provided by the embodiments of the present application referring to shown in Fig. 2 It includes:

Step 201: detection device gets parms value, and the parameter value includes the first phase of at least one electronic tag The distance between value, reader and at least one electronic tag, the first phase value are that reader is received from least one The phase value measured when the signal of a electronic tag.

Specifically, when detection device is reader, reader can built-in phase measurement cells, passing through reader day When line receives the signal from least one electronic tag, it can obtain coming from least one by phase measurement cells measurement The phase value of the signal of electronic tag, i.e. the first phase value of at least one electronic tag.Wherein, what reader received comes from The signal of at least one electronic tag can be at least one electronic tag in the signal back reflection for receiving reader transmission The signal returned, and the label data of electronic tag is carried in the signal of at least one tag reflection time.Label data packet Include the identification information of electronic tag, for example, sequence number of electronic tag.Reader can be with built-in distance measuring unit, when readding During reading device sends radiofrequency signal at least one electronic tag by reader antenna, distance measuring unit can be passed through Measurement obtains the distance between reader and at least one electronic tag.Range measurement mode can there are many, such as sound survey Away from, laser ranging, wireless signal ranging etc..Certainly, when practical application, reader and at least one can also be acquired by other equipment The distance between a electronic tag is simultaneously uploaded to reader, and the application does not limit this.

When detection device is to establish the terminal of communication connection with reader, measurement can be obtained at least by reader The first phase value of one electronic tag is uploaded to terminal.It, can for the distance between reader and at least one electronic tag To be measured by reader and be uploaded to terminal, by other device measurings and terminal can also be uploaded to, the application to this and it is unlimited It is fixed.

Also, in the embodiment of the present application, the distance between reader and at least one electronic tag, can be reader with The distance between each electronic tag at least one electronic tag is also possible to where reader and at least one electronic tag The distance of plane.Wherein, at a distance from plane where reader and at least one electronic tag it can be appreciated that be reader with The distance on the surface for the object that at least one electronic tag is attached to.When concrete application, detection device obtains any distance, can To be determined in a manner of the verifying electronic tag true and false actually used, can hereinafter carry out in conjunction with specific embodiments specifically It is bright.

Step 202: detection device inquires the first attribute of at least one electronic tag from pre-stored attribute information Information, the attribute information include the first attribute information of different electronic tags, and first attribute information includes first phase The first phase deviation of deviation, different electronic tags is different.

Step 203: the first category of parameter value and at least one electronic tag that inquires of the detection device based on acquisition Property information, obtain at least one check value, and utilize at least one check value, verify the true and false of at least one electronic tag.

In above-described embodiment, detection device available reader is surveyed when receiving the signal from least one electronic tag The phase value and the distance between reader and at least one electronic tag of amount, and then can use these parameters of acquisition The digital baseband input signal of value and at least one pre-stored electronic tag, obtains check value to verify at least one electronics mark The true and false of label.Only distinguish that the true and false of electronic tag, the application are proposed by the sequence number of electronic tag compared to the prior art The phase value and electronic tag measured when receiving signal from electronic tag by analysis reader phase deviation It is worth equiphase information, to verify the mode of the electronic tag true and false, the accuracy of verification result is higher, and certainly based on electronic tag Body intrinsic attribute carries out fake certification, without making more change to electronic tag and reader, can save into This.

The embodiment of the present application can be applicable under the scene that article transmission process carries out anti-counterfeiting detection to article.Sender can be with Adhere at least one electronic tag on needing anti-fake article, and the article for being attached at least one electronic tag is transferred to Recipient.After recipient receives article, using the true and false of at least one electronic tag adhered on detection device checking article, Whether can be replaced or destroy in checking article transmission process, reference can be made to schematic diagram of a scenario shown in Fig. 3.

Wherein, in the embodiment of the present application, the difference for the electronic tag number adhered on needing anti-fake article is utilized To check value it is also different come the mode for verifying the electronic tag true and false.To adhere on needing anti-fake article below to It the case where number of a few electronic tag is divided into one, at least two and at least three, is directed to examines in each case respectively Survey device using detection electronic tag by the way of be illustrated.

Situation 1: the number of at least one electronic tag is one

In this case, in addition to packet in the attribute information of the pre-stored true and false for verifying electronic tag of detection device Except the first attribute information for including different electronic tags, further includes: the second attribute information of different readers, the second attribute information Wavelength including the signal that second phase deviation and reader are sent at least one electronic tag, the second of different readers Digital baseband input signal is different.It also, can also include the identification information and different readers of different electronic tags in attribute information Identification information.The identification information of electronic tag and the first attribute information correspond, and the identification information of reader and second belongs to Property information correspond.

Specifically, the process of detection device detection electronic tag can refer to shown in Fig. 4 in the case of the first:

Step 401: detection device gets parms value, the parameter value of acquisition include electronic tag first phase value and The distance between reader and the electronic tag.

Wherein, the parameter value that detection device obtains can also include the identification information of the electronic tag, the electronic tag Identification information, which can be, to be carried in the signal from the electronic tag that reader receives.

Step 402: detection device inquired from pre-stored attribute information the electronic tag the first attribute information and Second attribute information of the reader.

Specifically, detection device can be according to the identification information of the electronic tag of acquisition, from pre-stored attribute information In inquire the first attribute information corresponding with the identification information of the electronic tag.When detection device is reader, reader In be stored with itself identification information, and then can be inquired according to the identification information of itself of storage corresponding with identification information Second attribute information.When detection device is to establish the terminal of connection with reader, terminal can obtain reading from reader The identification information of device, and then the second attribute corresponding with the identification information of the reader is inquired from pre-stored attribute information Information.

Step 403: the first attribute information of parameter value and the electronic tag that inquires of the detection device based on acquisition With the second attribute information of the reader, the check value of the electronic tag is calculated.

In the embodiment of the present application, the check value of the calculating can be understood as the reader and receive from the electronic tag Signal when the phase value that should theoretically measure.In view of signal transmission distance, electronic tag first phase deviation, And the second phase deviation of reader impacts the first phase value that reader measurement obtains, and because reader and Communication between electronic tag is based on backscattering coupling principle, and the wavelength and tag reflection for the signal that reader is sent return Wavelength it is equal, therefore the distance between reader and electronic tag be d when, correspondingly, signal transmission distance 2d, and signal pass It is defeated apart from one wavelength of every increase, the phase value that reader measures can correspond to variation 2 π.It, can be according to the following formula based on this Calculate the check value θ of the electronic tag:

Wherein, λ is the wavelength for the signal that the reader is sent to the electronic tag, and d is the reader and the electronic tag The distance between, θ_tagFor the first phase deviation of the electronic tag, θ_readerFor the second phase deviation of the reader.

Step 404: detection device compares the difference between the check value of calculating and the first phase value of the electronic tag, tests Demonstrate,prove the true and false of the electronic tag.

Specifically, detection device may determine that the difference between the check value of calculating and the first phase value of the electronic mark Absolute value whether less than the first preset value.When the judgment result is yes, it can be confirmed that the electronic tag is true electronics mark Label；It is that can be confirmed that the electronic tag is the electronic tag forged when judging result is no.Furthermore, it is desirable to explanation, this Shen Please embodiment provide aforesaid way can be not limited only to an electronic tag in the case where, when the number of electronic tag is at least In the case where one, electronics can also be verified using aforesaid way for each electronic tag at least one electronic tag The true and false of label.

In the embodiment of the present application, using pre-stored electronic tag first phase deviation and reader Two phase deviation is come the first of the electronic tag for calculating check value, and the check value of calculating and reader actual measurement being arrived Phase value compares, if the two is almost the same, it is believed that the first phase of the electronic tag that reader actual measurement arrives Position deviation is identical as pre-stored first phase deviation, therefore confirms that the electronic tag is true electronic tag, no Then, confirm that the electronic tag is the electronic tag forged.By verifying the true and false of electronic tag, it is so as to identify object It is no to be replaced or destroy.

Situation 2: the number of at least one electronic tag is at least two

In this case, in addition to packet in the attribute information of the pre-stored true and false for verifying electronic tag of detection device Except the first attribute information for including different electronic tags, further includes: the second attribute information of different readers, here the second attribute Information may include the wavelength for the signal that reader is sent at least one electronic tag.Also, it also can wrap in attribute information Include the identification information of different electronic tags and the identification information of different readers.The identification information of electronic tag and first belongs to Property information correspond, the identification information of reader and the second attribute information one-to-one correspondence.

Specifically, the process of detection device detection electronic tag can refer to shown in Fig. 5 under second situation:

Step 501: detection device gets parms value, and the parameter value of acquisition includes the first phase of at least two electronic tags Value and the distance between reader and at least two electronic tags.

Wherein, detection device obtain parameter value can also include at least two electronic tags identification information, at least two The identification information of a electronic tag can be to be carried respectively in the signal from least two electronic tags that reader receives 's.Also, here the distance between the reader and at least two electronic tags be the reader respectively at least two electronics The distance between each electronic tag in label.

Step 502: detection device inquires the first attribute of at least two electronic tags from pre-stored attribute information Second attribute information of information and the reader.

Wherein, detection device obtains the first attribute information and the detailed process of the second attribute information is walked in the case of the first The process recorded in rapid 402 is similar, and I will not elaborate.

Step 503: the first category of parameter value and at least two electronic tags that inquire of the detection device based on acquisition Second attribute information of property information and the reader, calculates the check value of at least two electronic tag.

In the embodiment of the present application, be again based on signal transmission distance, electronic tag first phase deviation and read The second phase deviation value for reading device impacts this feature to the first phase value that reader measurement obtains, and reads when using same When reading device measures the first phase value of the signal from least two electronic tags respectively, the influence of reader bring is fixed , thus can according to the following formula in calculated at least two electronic tag i-th of electronic tag check value θ_i, θ_iIt can To reflect the second phase deviation of the corresponding reader of i-th of electronic tag:

Wherein, λ is the wavelength for the signal that the reader is sent to i-th of electronic tag, d_iFor the reader and i-th of electricity The distance between subtab, θ_tag,iFor the first phase deviation of i-th of electronic tag, θ_measure,iFor i-th electronic tag First phase value, i are positive integer.

Step 504: detection device compares the verification of any two electronic tag in the check value of at least two electronic tags Difference between value verifies the true and false of at least two electronic tags.

Specifically, detection device may determine that the school of any two electronic tag in the check value of at least two electronic tags The absolute value of the difference between value is tested whether less than the second preset value.When the judgment result is yes, at least two electricity can be confirmed Subtab is true electronic tag；When the judgment result is no, it can be confirmed to exist at least two electronic tags and forge Electronic tag.When practical application, when the number of at least two electronic tags is more, at least two electronics marks can also be counted Variance, standard deviation between the check value of label, very poor etc., the true of at least two electronic tags is verified using these statistical informations It is pseudo-.Wherein, only at least two electronic tags are true electronic tag, can just confirm that article is true.

In the embodiment of the present application, first of the signal from least two electronic tags is measured respectively using same reader Phase value, since the influence of reader bring is fixed, therefore at least two electronic tags are corresponding is able to reflect reading The check value of the second phase deviation of device should be theoretically almost the same.Therefore, by comparing at least two electronics marks The check value of any two electronic tag in the check value of label can be confirmed out at least two electronic tags with the presence or absence of forgery Electronic tag.

Situation 3: the number of at least one electronic tag is at least three

In this case, it can wrap in the attribute information of the pre-stored true and false for verifying electronic tag of detection device Include the first attribute information of different electronic tags.Also, it can also include the identification information of different electronic tags in attribute information, The identification information of electronic tag and the first attribute information correspond.

Specifically, process of detection device detection electronic tag can refer to shown in Fig. 6 in the case of the third:

Step 601: detection device gets parms value, and the parameter value of acquisition includes the first phase of at least three electronic tags Value and the distance between reader and at least three electronic tags.

Wherein, detection device obtain parameter value can also include at least three electronic tags identification information, at least three The identification information of a electronic tag can be to be carried respectively in the signal from least three electronic tags that reader receives 's.Also, the distance between the reader and at least three electronic tags are the reader and at least three electronic tags here The distance of place plane.

In the embodiment of the present application, detection device can also obtain the location information of at least three electronic tags, and at least three The location information of electronic tag includes the absolute location information that at least three electronic tags are attached on article and at least three Relative position information between electronic tag.Wherein, the distance between any two electronic tag at least three electronic tags Less than the half-wavelength (i.e. half wavelength) for the signal that reader is sent to electronic tag, the purpose done so is to guarantee needle There are at least two non-colinear electronic tags to each electronic tag.

Specifically, the location information of at least three electronic tags can be used as a part of label data, it is respectively stored in In corresponding electronic tag, the detection device that can also be recorded by sender and pass through network transmission to recipient.When at least three When the location information of a electronic tag is stored in corresponding electronic tag, it can be believed from reader by being sent to electronic tag Number to obtain the location information of electronic tag, and when detection device is to establish the terminal of communication connection with reader, read The location information for reading the electronic tag that device can also will acquire is uploaded to terminal.

Step 602: detection device inquires the first attribute of at least three electronic tags from pre-stored attribute information Information.

Wherein, it is recorded in the detailed process with step 402 in the case of the first of the first attribute information of detection device acquisition Process is similar, and I will not elaborate.

Step 603: detection device calculates the second phase value of at least three electronic tags, at least three electronic tags The second phase value of j electronic tag is inclined for the first phase value of j-th of electronic tag and the first phase of j-th of electronic tag Difference between difference, j are positive integer.

Wherein, in the embodiment of the present application, be again based on signal transmission distance, electronic tag first phase deviation, And the second phase deviation value of reader impacts this feature to the first phase value that reader measurement obtains, using same When one reader measures the first phase value of the signal from least three electronic tags respectively, the influence of reader bring is solid Fixed, and by subtracting each other the first phase value of j-th of electronic tag and the first phase deviation of j-th of electronic tag, it can To remove the influence for the first phase value that the first phase deviation of electronic tag obtains reader measurement, therefore, detection dress The second phase deviation for setting each electronic tag at least three electronic tags being calculated can reflect this indirectly The distance between electronic tag and reader.

Step 604: detection device calculates the of every two electronic tag in the second phase value of at least three electronic tags Difference between two-phase place value.

Wherein, due at least three electronic tags each electronic tag have at least two non-colinear electronic tags, Therefore, for every two electronic tag in three electronic tags, can calculate every two electronic tag second phase value it Between difference.

Step 605: detection device according to the difference of calculating, calculate between the reader and at least three electronic tags away from From.

In the embodiment of the present application, since the second phase deviation for each electronic tag being calculated can be indirectly anti- Mirror the distance between the electronic tag and reader, thus at least three electronic tags every two electronic tag second phase Difference between value, it is poor to be converted into the distance between the two electronic tags and reader, and then can be according to geometry original Reason reverse-locates technology using hyperbola and deduces the distance between the reader and at least three electronic tags.

Specifically, referring to shown in Fig. 7, it is assumed that any two electronic tag is a, b at least three electronic tags, wherein T_a(x_a, y_a) it is the location of electronic tag a coordinate, T_b(x_b, y_b) it is the location of electronic tag b coordinate, d_a,bFor electronics Relative distance between label a and electronic tag b, it is assumed that the second phase value of electronic tag a and the second phase of electronic tag b Difference between value is θ_a,b, then, the distance between electronic tag a and reader d_aBetween electronic tag b and reader Distance d_bThe distance between difference d_a-d_b=θ_a,b*λ.According to geometrical principle, it is known that the distance between electronic tag a, b and reader Poor d_a-d_b, reader can be limited on a hyperbola relative to the potential site of the two electronic tags a, b, wherein scheming Coordinate points R (x, y) on hyperbola shown in 7 is the position that reader is likely to be at.By the above-mentioned means, utilizing at least three Every two electronic tag in electronic tag is it can be concluded that a hyperbola, then at least three electronic tags are it can be concluded that at least three Hyperbola, the intersection point between at least three hyperbolas are the position that reader should be theoretically in.By the above process The distance between the reader and at least three electronic tags can be confirmed.

Step 606: detection device compare the distance of acquisition at a distance from calculating between difference, verify at least three electronics The true and false of label.

Specifically, detection device may determine that the distance of acquisition at a distance from calculating between difference absolute value it is whether small In third preset value.When the judgment result is yes, it can be confirmed that at least three electronic tags are true electronic tag；When sentencing When disconnected result is no, the electronic tag for existing at least three electronic tags and forging can be confirmed.Wherein, only at least two electricity Subtab is true electronic tag, can just confirm that article is true.

In the embodiment of the present application, first of the signal from least three electronic tags is measured respectively using same reader Phase value can be determined to be able to reflect out electronic tag according to the first phase value of electronic tag and first phase deviation The second phase value of the electronic tag of the distance between reader, and then according to every two electronics at least three electronic tags Difference between the second phase value of label, can deduce between reader and at least three electronic tags it is theoretic away from From the distance and theoretic distance actually got by comparing can be confirmed out at least three electronic tags whether deposit In the electronic tag of forgery.

Wherein, in three cases above the pre-stored attribute information of detection device can be from by RFID device manufacturer, It obtains, is also possible to by sender through network transmission to connecing in the database that anti-fake service provider or third party provide The detection device of debit.Also, when practical application, can also will attribute information relevant to electronic tag be stored in it is corresponding In electronic tag, attribute information relevant to reader is stored in corresponding reader, and such reader can pass through RFID Technology gets the attribute information stored in electronic tag, also, reader can also by the attribute information of itself storage and The attribute information obtained from electronic tag is uploaded to the terminal that communication connection has been established, so that detection device utilizes these attributes Information carries out the verifying to the electronic tag true and false.

Also, when practical application, the detection device of recipient before the true and false for verifying electronic tag according to phase information, It can also carry out basic fake certification.For example, being verified to logistics information and being carried out to the identification information of electronic tag Verifying.

Wherein, logistics information can be posted in article surface.Logistics information may include sender, delivery address, sender Contact method, addressee, posting address, addressee's contact method, send mode etc..Sender, can be with before transporting articles Logistics information is first sent to the detection device of recipient by network transmission, after recipient receives article, detection device will The logistics information that the article surface of acquisition is puted up is compared with the logistics information that sender sends in advance to confirm that logistics is believed It whether correct ceases.

Wherein, the identification information of electronic tag may include the sequence number etc. of electronic tag.Detection device is pre-stored It can also include the identification information of different electronic tags in attribute information.Detection device, can be with after verifying logistics information is correct Judge whether comprising the identification information of at least one electronic tag adhered on article in pre-stored attribute information, so as to true Whether the identification information of at least one fixed electronic tag is forged.Detection device includes in confirming pre-stored attribute information After the identification information of at least one electronic tag, it can tentatively confirm that the identification information of at least one electronic tag is correct.

Under verifying logistics information and the correct situation of identification information of electronic tag, subsequent to carry out the application again above-mentioned The operation for the true and false for more accurately verifying electronic tag that embodiment provides, i.e., received by analysis reader and come from electronics mark The digital baseband input signal equiphase information of the phase value and electronic tag measured when the signal of label, to verify electronic tag The true and false.It can be seen that being prevented by progress logistics information, the identification information of electronic tag and these three dimensions of phase information Puppet verifying, can make the accuracy of verification result higher.

In the following, based on the same technical idea, detection device provided by the embodiments of the present application is introduced in conjunction with attached drawing.

The embodiment of the present application provides a kind of detection device, and the detection device can be reader or be and reader Establish the terminal of communication connection, the chip being also possible in reader or terminal.The reader or the terminal or described Chip has the function of to realize involved in above method embodiment.The function can also be passed through by hardware realization Hardware executes corresponding software realization.The hardware or software include one or more modules corresponding with above-mentioned function.Institute Stating module can be software and/or hardware.

Fig. 8 shows a kind of structural schematic diagram of detection device 800 provided by the embodiments of the present application.Wherein, the detection Device 800 includes acquiring unit 801, storage unit 802 and processing unit 803.Wherein, the acquiring unit 801 is for obtaining Parameter value needed for executing the method for detecting electronic tag is taken, is stored in the storage unit 802 for detecting electronic tag Attribute information, the processing unit 803 be used for according to the parameter value and the storage obtained in the acquiring unit 801 The correlation attribute information stored in unit 802 executes the operation of detection electronic tag.

Specifically, acquiring unit 801, for the value that gets parms, the parameter value includes the of at least one electronic tag The distance between one phase value, reader and at least one described electronic tag, the first phase value are that the reader connects The phase value measured when receiving from the signal of at least one electronic tag.Storage unit 802, for storing attribute letter Breath, the attribute information includes the first attribute information of different electronic tags, and first attribute information includes that first phase is inclined The first phase deviation of difference, different electronic tags is different.Processing unit 803, for being inquired from the storage unit 802 First attribute information of at least one electronic tag；Based on the acquiring unit 801 obtain parameter value and inquire At least one electronic tag the first attribute information, obtain at least one check value；Utilize at least one described verification Value verifies the true and false of at least one electronic tag.

In one possible implementation, when at least one described electronic tag is an electronic tag, the category Property information further includes the second attribute information of different readers, and second attribute information includes second phase deviation and reading The second phase deviation of the wavelength for the signal that device is sent to one electronic tag, different readers is different.

The processing unit 803 can inquire the first attribute of one electronic tag from the storage unit 802 Second attribute information of information and the reader, and based on the acquiring unit 801 obtain parameter value and inquire One electronic tag the first attribute information and the reader the second attribute information, calculate one electronics mark The check value of label, and then compare the difference between the check value of calculating and the first phase value of one electronic tag, it verifies The true and false of one electronic tag.

Wherein, the processing unit 803 can calculate the check value θ of one electronic tag according to the following formula:

In one possible implementation, when at least one described electronic tag is at least two electronic tag, institute State the second attribute information that attribute information further includes different readers, second attribute information include reader to it is described at least The wavelength for the signal that two electronic tags are sent.

The processing unit 803 can inquire the first of at least two electronic tag from the storage unit 802 Second attribute information of attribute information and the reader, and parameter value, the Yi Jicha obtained based on the acquiring unit 801 The first attribute information and second attribute information at least two electronic tag ask calculate at least two electricity The check value of subtab, so in the check value of at least two electronic tag any two electronic tag check value Between difference, verify the true and false of at least two electronic tag.

Wherein, the processing unit 803 can calculate i-th of electricity at least two electronic tag according to the following formula The check value θ of subtab_i:

In one possible implementation, when at least one described electronic tag is at least three electronic tag, institute The first attribute information of at least three electronic tag can be inquired from the storage unit 802 by stating processing unit 803, and The second phase value of at least three electronic tag is calculated, the of j-th of electronic tag at least three electronic tag Two-phase place value be j-th of electronic tag first phase value and j-th of electronic tag first phase deviation it Between difference, j is positive integer.Further, every two electronics in the second phase value of at least three electronic tag is calculated Difference between the second phase value of label calculates the reader and at least three electronics mark according to the difference of calculating Label the distance between, and then the acquiring unit 801 obtain the distance at a distance from calculating between difference, verifying The true and false of at least three electronic tag.

In one possible implementation, the attribute information further includes the identification information and electricity of different electronic tags The identification information and first phase deviation of subtab correspond.

The acquiring unit 801 can also obtain at least one electronic tag described in that the reader receives Signal in the identification information of at least one electronic tag that carries.The processing unit can also be based on the acquisition First attribute information of parameter value and at least one electronic tag inquired that unit 801 obtains, obtains at least one Before a check value, confirm in the attribute information of the storage of storage unit 802 comprising the acquiring unit 801 acquisition The identification information of at least one electronic tag.

In addition, above-mentioned detection device 800 can also use formal implementation of hardware, Fig. 9 shows the embodiment of the present application and mentions The structural schematic diagram of another detection device 900 supplied.The detection device 900 may include processor 901, memory 902, lead to Believe interface 903.Wherein, the processor 901 is configured as that the detection device 900 is supported to execute above method embodiment and be related to Detection electronic tag function.The memory 902 realizes detection electronics involved in above method embodiment for storing Computer instruction and/or data necessary to label.The communication interface 903 is configured as executing the receipts of detection device 900 Send out the function of message.Wherein, the processor 901, the memory 902 are connected with the communication interface 903, the processor 901 for reading and executing the computer instruction and/or data that the memory 902 stores, and controls the acquisition of communication interface 903 Parameter value needed for executing the method for detection electronic tag completes the side that electronic tag is detected involved in above method embodiment Method.

Wherein, processor 901 described in the embodiment of the present application can be central processing unit (central Processingunit, CPU), general processor, digital signal processor (digital signal processor, DSP), Specific integrated circuit (application-specific integratedcircuit, ASIC), field programmable gate array It is (field programmable gate array, FPGA) or other programmable logic device, transistor logic, hard Part component or any combination thereof.It may be implemented or execute to combine and various illustratively patrol described in present disclosure Collect box, module and circuit.The processor 901 is also possible to realize the combination of computing function, such as includes one or more The combination etc. of micro processor combination, DSP and microprocessor.

The memory 902 can be nonvolatile memory, such as hard disk (hard disk drive, HDD) or solid-state Hard disk (solid-state drive, SSD) etc., can also be volatile memory (volatile memory), such as at random Access memory (random-access memory, RAM) etc..The memory 902 is also possible to can be used in carrying or deposit Store up the desired program code with instruction or data structure form and can be by any other medium of computer access, but not It is limited to this.

It should be noted that the memory 902 can integrate in the processor 901, it can also be with the processing Device 901 is separately positioned.

Also, it is not limited in the embodiment of the present application between above-mentioned processor 901, memory 902 and communication interface 903 Specific connection medium.The embodiment of the present application in Fig. 9 to pass through between processor 901, memory 902 and communication interface 903 Bus 904 connects, and bus indicates that the connection type between other components is only to be schematically illustrated in Fig. 9 with thick line, Do not regard it as and is limited.The bus can be divided into address bus, data/address bus, control bus etc..For convenient for indicating, in Fig. 9 only It is indicated with a thick line, it is not intended that an only bus or a type of bus.

Specifically, the processor 901 corresponds to processing unit 803 described in above-mentioned detection device 800, the storage Device 902 corresponds to storage unit 802 described in above-mentioned detection device 800, and the communication interface 903 is filled corresponding to above-mentioned detection Acquiring unit 801 described in 800 is set, when it is implemented, the processor 901, the memory 902 and the communication interface Interactive process between 903 can refer to the associated description in above method embodiment and above-mentioned communication device 800, here no longer It repeats.

The embodiment of the present application also provides a kind of computer storage medium, is stored with computer in the computer storage medium Executable instruction, the computer executable instructions by the computer when being called for making the computer complete above-mentioned side The method of electronic tag is detected involved in method embodiment.

The embodiment of the present application also provides a kind of computer program product, includes computer journey in the computer program product Sequence, the computer program are used to execute the method for completing that electronic tag is detected involved in above method embodiment.

It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The application be referring to according to the present processes, equipment (system) and computer program product flow chart and/or Block diagram describes.It should be understood that each process that can be realized by computer program instructions in flowchart and/or the block diagram and/or The combination of process and/or box in box and flowchart and/or the block diagram.It can provide these computer program instructions to arrive General purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices processor to generate one Machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for realizing flowing The device for the function of being specified in journey figure one process or multiple processes and/or block diagrams one box or multiple boxes.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies Within, then the application is also intended to include these modifications and variations.

Claims

1. a kind of detection device characterized by comprising

Acquiring unit, for the value that gets parms, the parameter value includes the first phase value of at least one electronic tag, reader The distance between at least one described electronic tag, the first phase value are that the reader receives described at least The phase value measured when the signal of one electronic tag；

Storage unit is used for attribute information storage, and the attribute information includes the first attribute information of different electronic tags, described First attribute information includes first phase deviation, and the first phase deviation of different electronic tags is different；

Processing unit, for inquiring the first attribute information of at least one electronic tag from the storage unit；It is based on First attribute information of parameter value and at least one electronic tag inquired that the acquiring unit obtains, obtains At least one check value；Using at least one described check value, the true and false of at least one electronic tag is verified.

2. device as described in claim 1, which is characterized in that when at least one described electronic tag is an electronic tag When, the attribute information further includes the second attribute information of different readers, and second attribute information includes that second phase is inclined The wavelength for the signal that difference and reader are sent to one electronic tag, the second phase deviation of different readers is not Together；

The processing unit, is specifically used for:

The first attribute information of one electronic tag and the second attribute of the reader are inquired from the storage unit Information；

Based on the acquiring unit obtain parameter value and the one electronic tag inquired the first attribute information and Second attribute information of the reader, calculates the check value of one electronic tag；

Compare the difference between the check value of calculating and the first phase value of one electronic tag, verifies one electronics The true and false of label.

3. device as claimed in claim 2, which is characterized in that the processing unit is calculating one electronic tag When check value, it is specifically used for:

The check value θ of one electronic tag is calculated according to the following formula:

Wherein, λ is the wavelength, and d is the distance between the reader and one electronic tag, θ_tagIt is one The first phase deviation of electronic tag, θ_readerFor the second phase deviation.

4. device as described in claim 1, which is characterized in that when at least one described electronic tag is at least two electronics marks When label, the attribute information further includes the second attribute information of different readers, second attribute information include reader to The wavelength for the signal that at least two electronic tag is sent；

The processing unit, is specifically used for:

Inquired from the storage unit at least two electronic tag the first attribute information and the reader second Attribute information；

The first attribute letter of the parameter value and at least two electronic tag inquired that are obtained based on the acquiring unit Breath and second attribute information calculate the check value of at least two electronic tag；

Compare the difference in the check value of at least two electronic tag between the check value of any two electronic tag, verifies The true and false of at least two electronic tag.

5. device as claimed in claim 4, which is characterized in that the processing unit is calculating at least two electronics mark When the check value of label, it is specifically used for:

The check value θ of i-th of electronic tag at least two electronic tag is calculated according to the following formula_i:

Wherein, λ is the wavelength, d_iFor the distance between the reader and i-th of electronic tag, θ_tag,iIt is described The first phase deviation of i electronic tag, θ_measure,iFor the first phase value of i-th of electronic tag, i is positive integer.

6. device as described in claim 1, which is characterized in that when at least one described electronic tag is at least three electronics marks When label, the processing unit is specifically used for:

The first attribute information of at least three electronic tag is inquired from the storage unit；

Calculate the second phase value of at least three electronic tag, j-th of electronic tag at least three electronic tag Second phase value be j-th of electronic tag first phase value and j-th of electronic tag first phase deviation Difference between value, j are positive integer；

Calculate the difference in the second phase value of at least three electronic tag between the second phase value of every two electronic tag Value；

According to the difference of calculating, the distance between the reader and at least three electronic tag are calculated；

Compare the distance that the acquiring unit obtains at a distance from calculating between difference, verify at least three electronics The true and false of label.

7. the device as described in claim 1 to 6 is any, which is characterized in that the attribute information further includes different electronic tags Identification information and electronic tag identification information and first phase deviation correspond；

The acquiring unit, is also used to: obtaining the signal from least one electronic tag that the reader receives The identification information of at least one electronic tag of middle carrying；

The processing unit, is also used to: in the parameter value obtained based on the acquiring unit and at least one described in inquiring First attribute information of a electronic tag before obtaining at least one check value, confirms the category of the storage unit storage Property information in comprising the acquiring unit obtain at least one electronic tag identification information.

8. the device as described in claim 1 to 7 is any, which is characterized in that the detection device be the reader or with The reader establishes the terminal of communication connection.

9. a kind of method for detecting electronic tag characterized by comprising

Detection device gets parms value, and the parameter value includes first phase value, reader and the institute of at least one electronic tag State the distance between at least one electronic tag, the first phase value be the reader receive from it is described at least one The phase value measured when the signal of electronic tag；

The detection device inquires the first attribute information of at least one electronic tag from pre-stored attribute information, It include the first attribute information of different electronic tags in the attribute information, first attribute information includes first phase deviation The first phase deviation of value, different electronic tags is different；

The first attribute letter of parameter value of the detection device based on acquisition and at least one electronic tag described in inquiring Breath obtains at least one check value, and using at least one described check value, verifies the true of at least one electronic tag It is pseudo-.

10. method as claimed in claim 9, which is characterized in that when at least one described electronic tag is an electronic tag When, the attribute information further includes the second attribute information of different readers, and second attribute information includes that second phase is inclined The wavelength for the signal that difference and reader are sent to one electronic tag, the second phase deviation of different readers is not Together；

The detection device inquires the first attribute information of at least one electronic tag from pre-stored attribute information, Include:

The detection device inquires the first attribute information and the institute of one electronic tag from pre-stored attribute information State the second attribute information of reader；

The first attribute letter of parameter value of the detection device based on acquisition and at least one electronic tag described in inquiring Breath obtains at least one check value, and using at least one described check value, verifies the true of at least one electronic tag It is pseudo-, comprising:

First attribute information of parameter value and the one electronic tag that inquires of the detection device based on acquisition and Second attribute information of the reader, calculates the check value of one electronic tag；

The detection device compares the difference between the check value of calculating and the first phase value of one electronic tag, verifying The true and false of one electronic tag.

11. method as claimed in claim 10, which is characterized in that the detection device calculates the school of one electronic tag Value is tested, including

12. method as claimed in claim 9, which is characterized in that when at least one described electronic tag is at least two electronics When label, the attribute information further includes the second attribute information of different readers, and second attribute information includes reader The wavelength of the signal sent at least two electronic tag；

The detection device inquired from pre-stored attribute information at least two electronic tag the first attribute information, With the second attribute information of the reader；

First attribute of parameter value and at least two electronic tag that inquires of the detection device based on acquisition is believed Second attribute information of breath and the reader calculates the check value of at least two electronic tag；

13. method as claimed in claim 12, which is characterized in that the detection device calculates at least two electronic tag Check value, comprising:

14. method as claimed in claim 9, which is characterized in that when at least one described electronic tag is at least three electronics When label, the detection device inquires the first attribute letter of at least one electronic tag from pre-stored attribute information Breath, comprising:

The detection device inquires the first attribute information of at least three electronic tag from pre-stored attribute information；

The detection device calculates the second phase value of at least three electronic tag, at least three electronic tag The second phase value of j electronic tag be j-th of electronic tag first phase value and j-th of electronic tag the Difference between one digital baseband input signal, j are positive integer；

The detection device calculates the second phase of every two electronic tag in the second phase value of at least three electronic tag Difference between place value；

The detection device according to the difference of calculating, calculate between the reader and at least three electronic tag away from From；

The detection device compare the distance of acquisition at a distance from calculating between difference, verify at least three electronic tag The true and false.

15. the method as described in claim 9 to 14 is any, which is characterized in that the attribute information further includes different electronics marks The identification information of label and the identification information of electronic tag and first phase deviation correspond；

It further include at least one electronics mark described in that the reader receives in the parameter value that the detection device obtains The identification information of at least one electronic tag carried in the signal of label；

The first of the detection device at least one electronic tag in the parameter value based on the acquisition and described in inquiring Attribute information, before obtaining at least one check value, further includes:

The detection device confirms the identification information comprising at least one electronic tag in the attribute information.

16. the method as described in claim 9 to 15 is any, which is characterized in that the detection device be the reader or The terminal of communication connection is established with the reader.

17. a kind of computer storage medium, which is characterized in that be stored with the executable finger of computer in the computer storage medium It enables, the computer executable instructions by the computer when being called for making the computer perform claim that 9-15 be required to appoint Method described in one.