CN204595905U - RFID tag, label recognizer, label reader - Google Patents
RFID tag, label recognizer, label reader Download PDFInfo
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- CN204595905U CN204595905U CN201520025536.9U CN201520025536U CN204595905U CN 204595905 U CN204595905 U CN 204595905U CN 201520025536 U CN201520025536 U CN 201520025536U CN 204595905 U CN204595905 U CN 204595905U
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Abstract
A kind of RFID tag, label recognizer, label reader, described RFID tag comprises the antenna, radio-frequency (RF) front-end circuit, digital control circuit and the tag identifier unit that connect successively.Above-mentioned scheme can improve the reliability of RFID tag identify label, and can save energy consumption.
Description
Technical field
The utility model relates to technical field of RFID, particularly relates to a kind of RFID tag, label recognizer, label reader.
Background technology
Radio-frequency (RF) identification (Radio Frequency Identification, RFID) is a kind of communication technology, and it can read and write related data by radiowave identification specific objective, and without the need to setting up machinery or optical contact between specific objective.
Typical rfid system is made up of label reader, label (transponder) and data processor.For the rfid system of high frequency, communicating between label reader with label be by aerial coil between inductive coupling complete the transmission of information.
In prior art, RFID tag can adopt randomizer generation for the sequence number of unique identification RFID tag identity, as the mark of RFID tag, but, due to the unreliability that randomizer runs, make different labels may have identical sequence number, and randomizer needs when producing sequence number to consume certain power consumption, therefore, the sequence number that RFID tag of the prior art also exists generation is unreliable, and the problem that energy consumption is larger.
Utility model content
What the utility model embodiment solved is how to make RFID tag possess reliable identification information, and reduces energy consumption.
For solving the problem, the utility model embodiment provides a kind of RFID tag, and described RFID tag comprises:
Antenna, radio-frequency (RF) front-end circuit, digital control circuit and tag identifier unit, wherein:
Described antenna, is suitable for received tag identification signal to be sent to described radio-frequency (RF) front-end circuit, and simulating signal corresponding to the identification information of the described RFID tag described radio-frequency (RF) front-end circuit sent is launched;
Described radio-frequency (RF) front-end circuit, the tag identification signal that described antenna receives is suitable for be converted to corresponding digital signal, and be passed to described digital control circuit, the identification information of the described RFID tag identified by described digital control circuit is converted to corresponding simulating signal, and is passed to described antenna;
Described digital control circuit, is suitable for 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, and read described identification information is sent to described radio-frequency (RF) front-end circuit;
Described tag identifier unit, be suitable for the identification information storing described RFID tag, described identification information comprises the sequence number be made up of string of binary characters, in each sequence in described sequence number logical one and 0 by the fuse of corresponding positions sequence in array of fuses connection and disconnect represent.
Alternatively, described digital control circuit comprises tag state control module, described tag state control module is suitable for when described RFID tag enters in the reading field of label reader, described RFID tag is converted to ready state, and when described label reader determines that read identification information is correct, described RFID tag is converted to dormant state.
Alternatively, the frequency of operation of described RFID tag is 6.78MHz.
The utility model embodiment still provides a kind of label recognizer, and described device comprises:
Request unit, is suitable for transmitting Sequence Number read requests to the RFID tag being in ready state of reading in field;
Recognition unit, is suitable for when receiving the response message that multiple RFID tag returns, and reads the identification information in described multiple RFID tag one by one, until identify all RFID tag.
Alternatively, the identify label of described RFID tag comprises the sequence number that string of binary characters is formed, and described recognition unit is suitable for reading and the character of first sequence in the sequence number of more all described RFID tag; When the character of first sequence in the sequence number of described RFID tag is identical, then to read and whether compare the character of next bit sequence identical, until when the identification strings that forms of the identification strings that in the sequence number of arbitrary RFID tag, first sequence to the character of present bit sequence forms and the character of corresponding positions sequence in the sequence number of other RFID tag is all different, read the sequence number of described RFID tag, until read the sequence number of all RFID tag.
Alternatively, described recognition unit is also suitable for reading the character presetting position sequence in described sequence number, and performs the operation of the sequence number read in described RFID tag in the time slot that described default position sequence character is corresponding.
Alternatively, described device also comprises: when determining that read identification information is incorrect, issues tag recognition miscue information.
The utility model embodiment still provides a kind of label reader, and described label reader comprises above-mentioned label recognizer.
Compared with prior art, the technical solution of the utility model has following advantage:
Unique mark is carried out by the identity adopting the tag identifier unit of array of fuses composition to carry out radio frequency identification label, interrupting and being connected 0 and 1 of the character representing corresponding positions sequence respectively due to the fuse in described array of fuses, can improve the reliability of RFID tag identify label.Meanwhile, the sequence number represented by array of fuses is solidificated in the identity information identifying RFID tag in described label, producing sequence number at random, therefore, can save energy consumption without the need to consuming extra energy consumption.
Accompanying drawing explanation
Fig. 1 is the composition structural representation of a kind of RFID tag in the utility model embodiment;
Fig. 2 is the process flow diagram of a kind of label identification method in the utility model embodiment;
Fig. 3 is the process flow diagram of the another kind of label identification method in the utility model embodiment;
Fig. 4 is the structure intention of a kind of label recognizer in the utility model embodiment.
Embodiment
For solving the above-mentioned problems in the prior art, the identity that the technical scheme that the utility model embodiment adopts carrys out radio frequency identification label by the tag identifier unit of employing array of fuses composition carries out unique mark, the reliability of RFID tag identify label can be improved, and save energy consumption.
For enabling above-mentioned purpose of the present utility model, feature and advantage more become apparent, and are described in detail specific embodiment of the utility model below in conjunction with accompanying drawing.
Fig. 1 shows the structural representation of a kind of RFID tag in the utility model embodiment.RFID tag 100 as shown in Figure 1, can comprise: antenna 101, radio-frequency (RF) front-end circuit 102, digital control circuit 103 and tag identifier unit 104.Wherein, antenna 101, radio-frequency (RF) front-end circuit 102, digital control circuit 103 are connected successively with tag identifier unit 104.
In the utility model one embodiment, the identification information of RFID tag 100 is stored in tag identifier unit 104, described identification information comprises the sequence number be made up of string of binary characters, the logical one in each sequence in described sequence number and 0 by the fuse of corresponding positions sequence in array of fuses connection and disconnect represent.
The principle of work of the RFID tag in the utility model embodiment is as follows:
When antenna 101 receives (identification) signal of the reading identity information that label reader (not shown) sends, received identification signals is sent to radio-frequency (RF) front-end circuit 102 by antenna 101.The identification signals that antenna sends is converted to corresponding digital signal by radio-frequency (RF) front-end circuit 102, and is sent to digital control circuit 103.Digital control circuit 103, when receiving the digital signal that described radio-frequency (RF) front-end circuit 102 sends, reads the identification information stored in described tag identifier unit 104, is namely stored in the sequence number in described tag identifier unit 104.
After the identification information that digital control circuit 103 stores in reading tag identify unit 104, the identification information of read RFID tag 100 is sent to radio-frequency (RF) front-end circuit 102.Received identification information is converted to corresponding simulating signal by radio-frequency (RF) front-end circuit 102, and is sent to described antenna 101, corresponding for described identification information simulating signal is launched by antenna 101.
In concrete enforcement, described digital control circuit 103 can also comprise tag state control module 1031.Wherein:
Tag state control module 1031, be suitable for when described RFID tag 100 enters in the reading field of label reader, described RFID tag 100 is converted to ready state, so that label reader determines that it reads the quantity of the RFID tag 100 in field.
Meanwhile, RFID tag 100 when label reader determines that read identification information is correct, can be converted to dormant state by ready state, to avoid the identification information of repetition reading rfid tags 100 by tag state control module 1031.In concrete enforcement, when RFID tag 100 leaves the reading field of label reader, RFID tag 100 causes internal circuit not work due to power down, is in off working state, thus cannot respond the read request of label reader.
In concrete enforcement, the frequency of operation of described RFID tag 100 can be 6.78MHz.Compared with the frequency of operation 13.56MHz used with RFID tag of the prior art, in the utility model embodiment, RFID tag 100 is while guaranteeing sensitivity, communication distance far away can be had, there is stronger anti-interference and the reliability of Geng Gao.
Fig. 2 shows the process flow diagram of a kind of label identification method in the utility model embodiment.Label identification method as shown in Figure 2, can comprise:
Step S201: to transmit Sequence Number read requests to the RFID tag being in ready state of reading in field.
In concrete enforcement, when in the reading field that RFID tag enters label reader, by the tag state control module in digital control circuit, RFID tag can be converted to ready state.
Step S202: when receiving the response message that multiple RFID tag returns, reads the identification information in described multiple RFID tag one by one, until identify all RFID tag.
In concrete enforcement, can first judge the form of the response message that received multiple RFID tag return.When determining that the form of the response message that described radio-frequency (RF) tag returns is correct, can pass through corresponding anti-collision read method, the identification information choosing a RFID tag in described multiple RFID tag reads.
Here it is pointed out that when read in field only have a RFID tag to return response message time, the form of the response message returned at radio frequency identification label be judged to be correct after, directly can carry out the reading of sequence number, repeat no more here.
Fig. 3 shows the process flow diagram of the another kind of label identification method in the utility model embodiment.Label identification method as shown in Figure 3, can comprise:
Step S301: to transmit Sequence Number read requests to the RFID tag being in ready state of reading in field.
In concrete enforcement, label reader can read the identification information of the RFID tag of ready state, and the RFID tag for other states then can not read.
Step S302: read one by one and judge that whether the character of corresponding positions sequence in the sequence number of the RFID tag of all responses is identical.
In the utility model one embodiment, when the response message that the multiple RFID tag received in reading field return, can to read by turn and whether the character of identical bits sequence in the sequence number of more all described RFID tag is identical, to read with the identity identification information choosing all RFID tag returned in the RFID tag of response message.
Step S303: the identification information in the RFID tag selected by reading, until the identification information reading in all RFID tag.
In concrete enforcement, when the character of first sequence in the sequence number of described RFID tag is identical, then to read and whether compare the character of next bit sequence identical, until when the identification strings that forms of the identification strings that in the sequence number of arbitrary RFID tag, first sequence to the character of present bit sequence forms and the character of corresponding positions sequence in the sequence number of other RFID tag is all different, read the sequence number of described RFID tag.
Such as, in the reading field of label reader, there are three RFID tag, when corresponding sequence number is respectively 10110,10000 and 10101, first can read the character of first sequence of described three RFID tag, through comparing discovery, the character of first sequence is 1.Now, then can reading the character of second sequence, being 0 through comparing discovery.So, then the character of the 3rd sequence is read, character through comparing discovery the 3rd sequence is respectively 1, 0 and 1, now, the identification strings that the sequence number of the front three of described three RFID tag is formed is respectively " 101 " " 100 " " 101 ", wherein, sequence number is the identification strings " 100 " of 10000 RFID tag, different from the identification strings " 101 " that the character that other two sequence numbers are respectively the front three of the sequence number of the RFID tag of 10110 and 10101 is formed, therefore, can choose the 3rd sequence is that the carrying out of the RFID tag of 0 is read, and after reading sequence number is the sequence number of the RFID tag of 10000, be converted into dormant state.
Then, to read in field only remaining sequence number be respectively 10110 and 10101 RFID tag to be read, now, can be chosen arbitrarily one of them and read.Such as, can first choose first sequence to the character of the 4th sequence be 1011 RFID tag read, and after having read, the RFID tag of sequence number 10110 is converted to dormant state by ready state.
Finally, choose only surplus sequence number be 10101 RFID tag read.Now, all RFID tag of reading in field are all identified.Here it is pointed out that the efficiency in order to improve identification, after determining that the form of the response message that RFID tag returns is correct, the character of multiple sequences of corresponding positions sequence in the sequence number of multiple RFID tag can be read simultaneously, compare.Such as, the character of 1-8 position sequence in sequence number can be read simultaneously, and the character of the 1-8 position sequence each RFID tag returned compares, when the character of 1-8 position sequence of the RFID tag determining one of them is different from the character of the 1-8 position sequence of other RFID tag, the sequence number can choosing described RFID tag reads, the rest may be inferred, till reading all RFID tag of reading in field.
In concrete enforcement, read the character presetting position sequence in described sequence number in the time slot that in the sequence number that also can read, the character of certain bits sequence is corresponding, and perform the operation of the sequence number read in described RFID tag in the time slot that described default position sequence character is corresponding.
Be understandable that, label identification method in the utility model embodiment is not subject to the number of the RFID tag simultaneously returning response, and the number of character in the sequence number of RFID tag, the numeral system of employing restriction, when to return the number of RFID tag of response simultaneously, and when in the sequence number that adopts of RFID tag, the number of character and the numeral system that adopts change, can carry out with reference to above-mentioned explanation, not repeat them here.
In concrete enforcement, the label identification method in the utility model embodiment can also comprise:
Step S304: when determining that read identification information is incorrect, issues tag recognition miscue information.
In concrete enforcement, when determining that the identification information in read RFID tag is incorrect, corresponding miscue information can be issued, to remind related personnel to take appropriate measures, guaranteeing the reliability of tag recognition.
Fig. 4 shows the structural representation of a kind of label recognizer in the utility model embodiment.Label recognizer 400 as shown in Figure 4, can comprise request unit 401 and recognition unit 402, wherein:
Request unit 401, is suitable for transmitting Sequence Number read requests to the RFID tag being in ready state of reading in field.
Recognition unit 402, is suitable for when receiving the response message that multiple RFID tag returns, and reads the identification information in described multiple RFID tag one by one, until identify all RFID tag.
In concrete enforcement, the identify label of described RFID tag comprises the sequence number that string of binary characters is formed, and described recognition unit 402 is suitable for reading and the character of first sequence in the sequence number of more all described RFID tag; When the character of first sequence in the sequence number of described RFID tag is identical, then to read and whether compare the character of next bit sequence identical, until when the identification strings that forms of the identification strings that in the sequence number of arbitrary RFID tag, first sequence to the character of present bit sequence forms and the character of corresponding positions sequence in the sequence number of other RFID tag is all different, read the sequence number of described RFID tag, until read the sequence number of all RFID tag.
In concrete enforcement, described recognition unit 402 is also suitable for reading the character presetting position sequence in described sequence number, and performs the operation of the sequence number read in described RFID tag in the time slot that described default position sequence character is corresponding.
In concrete enforcement, the label recognizer 400 in the utility model embodiment can also comprise: Tip element 403, wherein:
Tip element 403, is suitable for when determining that read identification information is incorrect, issues tag recognition miscue information.
The utility model embodiment still provides a kind of label reader, and described label reader comprises above-mentioned label recognizer.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
Done detailed introduction to the method and system of the utility model embodiment above, the utility model is not limited to this.Any those skilled in the art, not departing from spirit and scope of the present utility model, all can make various changes or modifications, and therefore protection domain of the present utility model should be as the criterion with claim limited range.
Claims (8)
1. a RFID tag, is characterized in that, comprises antenna, radio-frequency (RF) front-end circuit, digital control circuit and tag identifier unit, wherein:
Described antenna, is suitable for received tag identification signal to be sent to described radio-frequency (RF) front-end circuit, and simulating signal corresponding to the identification information of the described RFID tag described radio-frequency (RF) front-end circuit sent is launched;
Described radio-frequency (RF) front-end circuit, the tag identification signal that described antenna receives is suitable for be converted to corresponding digital signal, and be passed to described digital control circuit, the identification information of the described RFID tag identified by described digital control circuit is converted to corresponding simulating signal, and is passed to described antenna;
Described digital control circuit, is suitable for 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, and read described identification information is sent to described radio-frequency (RF) front-end circuit;
Described tag identifier unit, be suitable for the identification information storing described RFID tag, described identification information comprises the sequence number be made up of string of binary characters, in each sequence in described sequence number logical one and 0 by the fuse of corresponding positions sequence in array of fuses connection and disconnect represent.
2. RFID tag according to claim 1, it is characterized in that, described digital control circuit comprises tag state control module, described tag state control module is suitable for when described RFID tag enters in the reading field of label reader, described RFID tag is converted to ready state, and when described label reader determines that read identification information is correct, described RFID tag is converted to dormant state.
3. RFID tag according to claim 1, is characterized in that, the frequency of operation of described RFID tag is 6.78MHz.
4. a label recognizer, is suitable for identifying the RFID tag described in any one of claim 1-3, it is characterized in that, comprising:
Request unit, is suitable for transmitting Sequence Number read requests to the RFID tag being in ready state of reading in field;
Recognition unit, is suitable for when receiving the response message that multiple RFID tag returns, and reads the identification information in described multiple RFID tag one by one, until identify all RFID tag.
5. label recognizer according to claim 4, it is characterized in that, the identify label of described RFID tag comprises the sequence number that string of binary characters is formed, and described recognition unit is suitable for reading and the character of first sequence in the sequence number of more all described RFID tag; When the character of first sequence in the sequence number of described RFID tag is identical, then to read and whether compare the character of next bit sequence identical, until when the identification strings that forms of the identification strings that in the sequence number of arbitrary RFID tag, first sequence to the character of present bit sequence forms and the character of corresponding positions sequence in the sequence number of other RFID tag is all different, read the sequence number of described RFID tag, until read the sequence number of all RFID tag.
6. label recognizer according to claim 5, it is characterized in that, described recognition unit is also suitable for reading the character presetting position sequence in described sequence number, and performs the operation of the sequence number read in described RFID tag in the time slot that described default position sequence character is corresponding.
7. label recognizer according to claim 4, is characterized in that, also comprises: when determining that read identification information is incorrect, issues tag recognition miscue information.
8. a label reader, is characterized in that, comprises the label recognizer described in any one of claim 4-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520025536.9U CN204595905U (en) | 2015-01-14 | 2015-01-14 | RFID tag, label recognizer, label reader |
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| CN201520025536.9U CN204595905U (en) | 2015-01-14 | 2015-01-14 | RFID tag, label recognizer, label reader |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108804965A (en) * | 2018-07-23 | 2018-11-13 | 北京普联恒创科技有限公司 | A kind of RFID tag and system |
| US11192055B2 (en) | 2017-08-30 | 2021-12-07 | Cummins Filtration Ip, Inc. | Interlock for genuine filter recognition |
| 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 |
-
2015
- 2015-01-14 CN CN201520025536.9U patent/CN204595905U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11192055B2 (en) | 2017-08-30 | 2021-12-07 | Cummins Filtration Ip, Inc. | Interlock for genuine filter recognition |
| US11633684B2 (en) | 2017-08-30 | 2023-04-25 | Cummins Filtration Ip, Inc. | Interlock for genuine filter recognition |
| CN108804965A (en) * | 2018-07-23 | 2018-11-13 | 北京普联恒创科技有限公司 | A kind of RFID tag and system |
| 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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Effective date of registration: 20190215 Address after: 201500 A1-7726, Fumin Branch, Hengsha Township, Chongming County, Chongming District, Shanghai Patentee after: SHANGHAI WUYI INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: Room 610-1, Building C, Tian'an Digital City, 588 Changwu Road, Wujin District, Changzhou City, Jiangsu Province, 213000 Patentee before: The Changzhou Museum of Electronic Science and Technology Co.,Ltd. |
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