CN105844318A - Radio frequency identification tag, tag identification method, tag identification device and tag reader - Google Patents
Radio frequency identification tag, tag identification method, tag identification device and tag reader Download PDFInfo
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- CN105844318A CN105844318A CN201510019556.XA CN201510019556A CN105844318A CN 105844318 A CN105844318 A CN 105844318A CN 201510019556 A CN201510019556 A CN 201510019556A CN 105844318 A CN105844318 A CN 105844318A
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Abstract
A radio frequency identification tag, a tag identification method, a tag identification device and a tag reader are provided. The radio frequency identification tag comprises an antenna, a radio frequency front-end circuit, a digital control circuit, and a tag identification unit, which are connected in sequence. Through the scheme, the reliability of identification based on the radio frequency identification tag is improved, and energy consumption is reduced.
Description
Technical field
The present invention relates to technical field of RFID, particularly relate to a kind of RFID tag, label knowledge
Other method and device, label reader.
Background technology
RF identification (Radio Frequency Identification, RFID) is a kind of communication technology, and it can
With by radio wave identification specific objective and read and write related data, and without setting up between specific objective
Machinery or optical contact.
Typical rfid system is made up of label reader, label (transponder) and data processor.Right
In the rfid system of high frequency, communicating between label reader with label be by aerial coil between inductance coupling
Close the transmission of information.
In prior art, RFID tag can use randomizer to generate and penetrate for unique mark
The serial number of frequency identification tag identity, as the mark of RFID tag, but, owing to random number is sent out
The unreliability that raw device runs so that different labels is likely to be of identical serial number, and random number is sent out
Raw device needs to consume certain power consumption, therefore, radio frequency identification marking of the prior art when producing serial number
The serial number that label also exist generation is unreliable, and the problem that energy consumption is bigger.
Summary of the invention
What the embodiment of the present invention solved is how to make RFID tag possess reliable identification information,
And reduce energy consumption.
For solving the problems referred to above, embodiments providing a kind of RFID tag, described radio frequency is known
Distinguishing label includes:
Antenna, RF front-end circuit, digital control circuit and tag identifier unit, wherein:
Described antenna, is suitable to send to described RF front-end circuit received tag identification signal,
And the simulation that the identification information of the described RFID tag sent by described RF front-end circuit is corresponding
Signal is launched；
Described RF front-end circuit, is suitable to the tag identification signal by described antenna receives and is converted to accordingly
Digital signal, and it is transferred to described digital control circuit, the institute that described digital control circuit is identified
The identification information stating RFID tag is converted to corresponding analogue signal, and is transferred to described antenna；
Described digital control circuit, is suitable to the tag identification signal sent according to described radio-frequency front-end, reads
The identification information of RFID tag described in described tag identifier unit, the described body that will be read
Part identification information sends to described RF front-end circuit；
Described tag identifier unit, is suitable to store the identification information of described RFID tag, described
Identification information includes the serial number being made up of string of binary characters, each sequence in described serial number
Upper logic 1 and 0 by array of fuses the fuse of corresponding positions sequence be connected and disconnected from represent.
Alternatively, described digital control circuit includes tag state control unit, and described tag state controls
Unit is suitable to, when described RFID tag enters in the reading field of label reader, be known by described radio frequency
Distinguishing label is converted to ready state, and is just determining read identification information at described label reader
Time really, described RFID tag is converted to resting state.
Alternatively, the operating frequency of described RFID tag is 6.78MHz.
The embodiment of the present invention additionally provides a kind of label identification method, it is characterised in that including:
Transmit Sequence Number read requests to the RFID tag being in ready state read in field；
When receiving the response message that multiple RFID tag returns, read the plurality of radio frequency one by one
Identify the identification information in label, until identifying all RFID tags.
Alternatively, the identity of described RFID tag includes the serial number that string of binary characters is constituted,
Described when receiving the response message that multiple RFID tag returns, read the plurality of radio frequency one by one
Identify the identification information in label, until identifying all RFID tags, including:
Read and compare the character of first sequence in the serial number of all described RFID tags；
When the character of first sequence in the serial number of described RFID tag is identical, then reads and compare
It is the most identical compared with the character of next bit sequence, until in the serial number of arbitrary RFID tag first sequence be extremely
The identification strings of the character composition of present bit sequence and corresponding positions sequence in the serial number of other RFID tags
The identification strings of character composition all different time, read the serial number of described RFID tag, until
Read the serial number of all RFID tags.
Alternatively, described when receiving the response message that multiple RFID tag returns, read one by one
Identification information in the plurality of RFID tag, until identifying all RFID tags,
Also include: read the character presetting position sequence in described serial number, and corresponding at described default position sequence character
Perform to read the operation of the serial number in described RFID tag in time slot.
Alternatively, described method also includes: when determining that read identification information is incorrect, sends out
Cloth tag recognition miscue information.
The embodiment of the present invention additionally provides a kind of label recognizer, and described device includes:
Request unit, the RFID tag being in ready state be suitable in reading field transmits Sequence Number
Read requests；
Recognition unit, is suitable to, when receiving the response message that multiple RFID tag returns, read one by one
Take the identification information in the plurality of RFID tag, until identifying all RFID tags.
Alternatively, the identity of described RFID tag includes the serial number that string of binary characters is constituted,
Described recognition unit is suitable to first sequence reading and comparing in the serial number of all described RFID tags
Character；When the character of first sequence in the serial number of described RFID tag is identical, then read
And the character that compares next bit sequence is the most identical, until in the serial number of arbitrary RFID tag first
Sequence is corresponding to the serial number of other RFID tags to the identification strings of the character composition of present bit sequence
When the identification strings of the character composition of position sequence is all different, read the serial number of described RFID tag,
Until reading the serial number of all RFID tags.
Alternatively, described recognition unit is further adapted for reading in described serial number the character presetting position sequence, and
Perform to read the behaviour of the serial number in described RFID tag in the time slot that described default position sequence character is corresponding
Make.
Alternatively, described device also includes: when determining that read identification information is incorrect, sends out
Cloth tag recognition miscue information.
The embodiment of the present invention additionally provides a kind of label reader, and described label reader includes above-mentioned mark
Sign and identify device.
Compared with prior art, technical scheme has the advantage that
By using the tag identifier unit of array of fuses composition that the identity of RFID tag is carried out only
The mark of one, due to the word interrupting and connecting expression corresponding positions sequence respectively of the fuse in described array of fuses
The 0 and 1 of symbol, can improve the reliability of RFID tag identity.Simultaneously as array of fuses
Represented serial number is the identity information being solidificated in and identifying RFID tag in described label, it is not necessary to disappear
Consume extra energy consumption and randomly generate serial number, therefore, it can energy efficient.
Accompanying drawing explanation
Fig. 1 is the composition structural representation of a kind of RFID tag in the embodiment of the present invention；
Fig. 2 is the flow chart of a kind of label identification method in the embodiment of the present invention；
Fig. 3 is the flow chart of the another kind of label identification method in the embodiment of the present invention；
Fig. 4 is that the structure of a kind of label recognizer in the embodiment of the present invention is intended to.
Detailed description of the invention
For solving the above-mentioned problems in the prior art, the technical scheme that the embodiment of the present invention uses is passed through
The identity of RFID tag is uniquely identified by the tag identifier unit using array of fuses composition,
The reliability of RFID tag identity, and energy efficient can be improved.
Understandable, below in conjunction with the accompanying drawings for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from
The specific embodiment of the present invention is described in detail.
Fig. 1 shows the structural representation of a kind of RFID tag in the embodiment of the present invention.Such as Fig. 1
Shown RFID tag 100, may include that antenna 101, RF front-end circuit 102, numeral control
Circuit 103 processed and tag identifier unit 104.Wherein, antenna 101, RF front-end circuit 102, numeral
Control circuit 103 and tag identifier unit 104 are sequentially connected with.
In an embodiment of the present invention, in tag identifier unit 104, storage has RFID tag 100
Identification information, described identification information includes the serial number being made up of string of binary characters, described
Logic 1 and 0 in each sequence in serial number by the connection of the fuse of corresponding positions sequence in array of fuses and
Disconnect and representing.
The operation principle of the RFID tag in the embodiment of the present invention is as follows:
When antenna 101 receives the (body reading identity information that label reader (not shown) sends
Part identify) signal time, the identification signals that received is sent to RF front-end circuit 102 by antenna 101.
The identification signals that antenna sends is converted to corresponding digital signal by RF front-end circuit 102, concurrently
Deliver to digital control circuit 103.Digital control circuit 103 sends receiving described RF front-end circuit 102
Digital signal time, read the identification information stored in described tag identifier unit 104, i.e. deposit
Storage serial number in described tag identifier unit 104.
After the identification information that digital control circuit 103 is stored in reading tag identifier unit 104,
The identification information of the RFID tag 100 read is sent to RF front-end circuit 102.Radio frequency
The identification information received is converted to corresponding analogue signal by front-end circuit 102, and sends to institute
State antenna 101, antenna 101 corresponding for described identification information analogue signal is launched.
In being embodied as, described digital control circuit 103 can also include tag state control unit 1031.
Wherein:
Tag state control unit 1031, is suitable to enter label reader at described RFID tag 100
Reading field in time, described RFID tag 100 is converted to ready state, in order to label read
Device determines that it reads the quantity of the RFID tag 100 in field.
Meanwhile, tag state control unit 1031 can determine read identity at label reader
When information is correct, RFID tag 100 is converted to resting state by ready state, to avoid repeating
The identification information of reading rfid tags 100.In being embodied as, RFID tag 100
When leaving the reading field of label reader, RFID tag 100 causes internal circuit not work due to power down
Make, be in off working state, thus the read request of label reader cannot be responded.
In being embodied as, the operating frequency of described RFID tag 100 can be 6.78MHz.With
Operating frequency 13.56MHz that RFID tag of the prior art is used is compared, and the present invention implements
In example, RFID tag 100 is while guaranteeing susceptiveness, can have more remote communication distance,
There is higher anti-interference and higher reliability.
Fig. 2 shows the flow chart of a kind of label identification method in the embodiment of the present invention.As shown in Figure 2
Label identification method, may include that
Step S201: transmit Sequence Number reading to the RFID tag being in ready state read in field
Request.
In being embodied as, when RFID tag enters in the reading field of label reader, Ke Yitong
RFID tag is converted to ready state by the tag state control unit crossed in digital control circuit.
Step S202: when receiving the response message that multiple RFID tag returns, read institute one by one
State the identification information in multiple RFID tag, until identifying all RFID tags.
In being embodied as, the response that first can return received multiple RFID tags disappears
The form of breath judges.When the form determining response message that described radio-frequency (RF) tag returns is correct, can
With by corresponding anti-collision read method, the radio frequency chosen in the plurality of RFID tag is known
The identification information of distinguishing label is read out.
It is to be herein pointed out the RFID tag that only has in reading field returns response message
Time, after the form of the response message returning RFID tag is judged to correctly, can directly carry out
The reading of serial number, repeats no more here.
Fig. 3 shows the flow chart of the another kind of label identification method in the embodiment of the present invention.Such as Fig. 3 institute
The label identification method shown, may include that
Step S301: transmit Sequence Number reading to the RFID tag being in ready state read in field
Request.
In being embodied as, label reader can read the identity mark of the RFID tag of ready state
Knowledge information, the RFID tag for other states then can not be read out.
Step S302: read one by one and judge all responses RFID tag serial number in corresponding positions
The character of sequence is the most identical.
In an embodiment of the present invention, what the multiple RFID tags in receiving reading field returned should
When answering information, can read by turn and identical bits in the serial number of relatively all described RFID tags
The character of sequence is the most identical, to choose a radio frequency in the RFID tag of all return response message
Identify that the identity identification information of label is read out.
Step S303: the identification information in RFID tag selected by reading, until reading institute
Identification information in some RFID tags.
In being embodied as, when the character of first sequence in the serial number of described RFID tag is identical
Time, then read and to compare the character of next bit sequence the most identical, until the sequence of arbitrary RFID tag
The sequence of the identification strings that in number, first sequence to the character of present bit sequence forms and other RFID tags
When the identification strings that in row number, the character of corresponding positions sequence is constituted is all different, read described RFID tag
Serial number.
Such as, when there being three RFID tags in the reading field of label reader, corresponding serial number divides
When being not 10110,10000 and 10101, can first read the first of described three RFID tags
The character of position sequence, through comparing discovery, the character of first sequence is 1.At this point it is possible to then read the
The character of two sequences, is 0 through comparing discovery.So, then read the character of the 3rd sequence, pass through
Relatively find that the character of the 3rd sequence is respectively 1,0 and 1, now, described three RFID tags
The identification strings that the serial number of front three is constituted is respectively " 101 " " 100 " " 101 ", wherein, and sequence
Number it is the identification strings " 100 " of 10000 RFID tags, is respectively 10110 with other two serial numbers
With 10101 RFID tag serial number front three character constitute identification strings " 101 "
Difference, therefore, it can to choose being read out of the RFID tag that the 3rd sequence is 0, and is reading
After the serial number of the RFID tag of Serial No. 10000, it is converted into resting state.
Then, the RFID tag being only left serial number respectively 10110 and 10101 in reading field is treated
Read, be read out at this point it is possible to arbitrarily choose one of them.For example, it is possible to first choose first
Sequence is read out to the RFID tag that character is 1011 of the 4th sequence, and by sequence after having read
The RFID tag of numbers 10110 is converted to resting state by ready state.
Finally, the RFID tag choosing only surplus Serial No. 10101 is read out.Now, read
Read all RFID tags in field the most identified.It is to be herein pointed out in order to improve knowledge
Other efficiency, after the form determining response message that RFID tag is returned is correct, Ke Yitong
Time read the character of multiple sequences of corresponding positions sequence in the serial number of multiple RFID tag, compare.
For example, it is possible to read the character of 1-8 position sequence in serial number simultaneously, and each RFID tag is returned
The character of 1-8 position sequence compares, when the character of the 1-8 position sequence of the RFID tag determining one of them
Time different from the character of the 1-8 position sequence of other RFID tags, described RFID tag can be chosen
Serial number is read out, and the rest may be inferred, till reading all RFID tags read in field.
In being embodied as, it is also possible in the time slot that in the serial number read, the character of certain bits sequence is corresponding
Read the character presetting position sequence in described serial number, and hold in the time slot that described default position sequence character is corresponding
Row reads the operation of the serial number in described RFID tag.
It is understood that the label identification method in the embodiment of the present invention is not penetrated by returning response simultaneously
The number of frequency identification tag, and the number of the character in the serial number of RFID tag, the number of employing
The restriction of system, when the number of the RFID tag returning response simultaneously, and RFID tag is adopted
Serial number in the number of character and the numeral system that used when changing, be referred to above-mentioned explanation
Carry out, do not repeat them here.
In being embodied as, the label identification method in the embodiment of the present invention can also include:
Step S304: when determining that read identification information is incorrect, issues tag recognition mistake
Information.
In being embodied as, the identification information in determining read RFID tag is incorrect
Time, corresponding miscue information can be issued, to remind related personnel to take appropriate measures, it is ensured that
The reliability of tag recognition.
Fig. 4 shows the structural representation of a kind of label recognizer in the embodiment of the present invention.Such as Fig. 4 institute
The label recognizer 400 shown, can include request unit 401 and recognition unit 402, wherein:
Request unit 401, the RFID tag being in ready state be suitable in reading field sends sequence
Number read requests.
Recognition unit 402, is suitable to when receiving the response message that multiple RFID tag returns, one by one
Read the identification information in the plurality of RFID tag, until identifying all radio frequency identification markings
Sign.
In being embodied as, the identity of described RFID tag includes what string of binary characters was constituted
Serial number, described recognition unit 402 is suitable to read and compare the serial number of all described RFID tags
In the character of first sequence；Character phase when first sequence in the serial number of described RFID tag
Meanwhile, then read and to compare the character of next bit sequence the most identical, until the sequence of arbitrary RFID tag
Identification strings that in row number, first sequence to the character of present bit sequence forms and other RFID tags
When the identification strings that in serial number, the character of corresponding positions sequence is constituted is all different, read described radio frequency identification marking
The serial number signed, until reading the serial number of all RFID tags.
In being embodied as, described recognition unit 402 is further adapted for reading in described serial number presets position sequence
Character, and perform to read in described RFID tag in the time slot that described default position sequence character is corresponding
The operation of serial number.
In being embodied as, the label recognizer 400 in the embodiment of the present invention can also include: prompting
Unit 403, wherein:
Tip element 403, is suitable to when determining that read identification information is incorrect, issues label and knows
Other miscue information.
The embodiment of the present invention additionally provides a kind of label reader, and described label reader includes above-mentioned mark
Sign and identify device.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
Suddenly the program that can be by completes to instruct relevant hardware, and this program can be stored in computer-readable
In storage medium, storage medium may include that ROM, RAM, disk or CD etc..
Having been described in detail the method and system of the embodiment of the present invention above, the present invention is not limited to this.
Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various change with
Amendment, therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (12)
1. a RFID tag, it is characterised in that include antenna, RF front-end circuit, digital control electricity
Road and tag identifier unit, wherein:
Described antenna, is suitable to send to described RF front-end circuit received tag identification signal, and
The mould that the identification information of the described RFID tag sent by described RF front-end circuit is corresponding
Intend signal to launch；
Described RF front-end circuit, is suitable to the tag identification signal that described antenna receives is converted to corresponding number
Word signal, and it is transferred to described digital control circuit, the institute that described digital control circuit is identified
The identification information stating RFID tag is converted to corresponding analogue signal, and is transferred to described sky
Line；
Described digital control circuit, is suitable to the tag identification signal sent according to described radio-frequency front-end, reads institute
State the identification information of RFID tag described in tag identifier unit, the described body that will be read
Part identification information sends to described RF front-end circuit；
Described tag identifier unit, is suitable to store the identification information of described RFID tag, described body
Part identification information includes the serial number being made up of string of binary characters, each sequence in described serial number
Upper logic 1 and 0 by array of fuses the fuse of corresponding positions sequence be connected and disconnected from represent.
RFID tag the most according to claim 1, it is characterised in that described digital control circuit bag
Including tag state control unit, described tag state control unit is suitable to enter at described RFID tag
When entering in the reading field of label reader, described RFID tag is converted to ready state, and
Described label reader determines when read identification information is correct, by described RFID tag
Be converted to resting state.
RFID tag the most according to claim 1, it is characterised in that described RFID tag
Operating frequency is 6.78MHz.
4. a label identification method, it is characterised in that including:
Transmit Sequence Number read requests to the RFID tag being in ready state read in field；
When receiving the response message that multiple RFID tag returns, read the plurality of radio frequency one by one and know
Identification information in distinguishing label, until identifying all RFID tags.
Label identification method the most according to claim 4, it is characterised in that described RFID tag
Identity includes the serial number that string of binary characters is constituted, described when receiving multiple radio frequency identification marking
When signing the response message returned, read the identification information in the plurality of RFID tag one by one,
Until identifying all RFID tags, including:
Read and compare the character of first sequence in the serial number of all described RFID tags；
When the character of first sequence in the serial number of described RFID tag is identical, then reads and compare
The character of next bit sequence is the most identical, until in the serial number of arbitrary RFID tag first sequence be extremely
The identification strings of the character composition of present bit sequence is corresponding to the serial number of other RFID tags
When the identification strings of the character composition of position sequence is all different, read the serial number of described RFID tag,
Until reading the serial number of all RFID tags.
Label identification method the most according to claim 5, it is characterised in that described when receiving multiple penetrating
During the response message that frequency identification tag returns, read the identity in the plurality of RFID tag one by one
Identification information, until identifying all RFID tags, also includes: read in described serial number pre-
If the character of position sequence, and perform to read the knowledge of described radio frequency in the time slot that described default position sequence character is corresponding
The operation of the serial number in distinguishing label.
Label identification method the most according to claim 4, it is characterised in that also include: read when determining
When the identification information that takes is incorrect, issue tag recognition miscue information.
8. a label recognizer, it is characterised in that including:
Request unit, is suitable to transmit Sequence Number reading to the RFID tag being in ready state read in field
Take request；
Recognition unit, is suitable to, when receiving the response message that multiple RFID tag returns, read one by one
Identification information in the plurality of RFID tag, until identifying all RFID tags.
Label recognizer the most according to claim 8, it is characterised in that described RFID tag
Identity includes that the serial number that string of binary characters is constituted, described recognition unit are suitable to read and compare
The character of first sequence in the serial number of all described RFID tags；When described radio frequency identification marking
When the character of first sequence in the serial number signed is identical, then reads and compare the character of next bit sequence and be
It is no identical, until first sequence is to the character group of present bit sequence in the serial number of arbitrary RFID tag
The identification strings become and the character composition of corresponding positions sequence in the serial number of other RFID tags
When identification strings is all different, read the serial number of described RFID tag, until reading all penetrating
The serial number of frequency identification tag.
Label recognizer the most according to claim 9, it is characterised in that described recognition unit is further adapted for
Read the character presetting position sequence in described serial number, and in the time slot that described default position sequence character is corresponding
Perform to read the operation of the serial number in described RFID tag.
11. label recognizers according to claim 8, it is characterised in that also include: read when determining
When the identification information that takes is incorrect, issue tag recognition miscue information.
12. 1 kinds of label readers, it is characterised in that include the tag recognition described in any one of claim 9-11
Device.
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| CN201510019556.XA CN105844318A (en) | 2015-01-14 | 2015-01-14 | Radio frequency identification tag, tag identification method, tag identification device and tag reader |
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| CN114386439A (en) * | 2020-10-16 | 2022-04-22 | 杭州旗捷科技有限公司 | Information anti-collision method, system, equipment and storage medium in radio frequency identification |
| CN114386440A (en) * | 2020-10-16 | 2022-04-22 | 杭州旗捷科技有限公司 | Information anti-collision method, system, equipment and storage medium in radio frequency identification |
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