CN104036210A - Test method of identifying multi-tag performance by UHF reader - Google Patents
Test method of identifying multi-tag performance by UHF reader Download PDFInfo
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- CN104036210A CN104036210A CN201410227926.4A CN201410227926A CN104036210A CN 104036210 A CN104036210 A CN 104036210A CN 201410227926 A CN201410227926 A CN 201410227926A CN 104036210 A CN104036210 A CN 104036210A
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Abstract
The invention discloses a test method of identifying multi-label performance by an UHF reader. The test method includes that slot values correspond to simulation labels, the data contents of each label need not to be stored in a memory space, each label need not meet the protocol state handling of the national military standard, so that resource consumption such as the memory space is greatly saved, and the label number depends on the size of memory space of the slot values, while a slot value of each label only occupies 15 bits space of the memory, so that hundreds of or up to thousands of simulation labels may be generated. The identifying multi-label performance of the reader is tested conveniently and flexibly.
Description
Technical field
The invention belongs to radio-frequency (RF) identification (Radio Frequency Identification, RFID) technology, be specifically related to the method for a kind of ultrahigh frequency readers that meets national military standard (GJB7377.1-2011) agreement to the performance test of many tag recognition.
Background technology
Widespread use along with REID, in the urgent need to read write line, in finite time, efficiently identify fast a large amount of labels, while there is a plurality of label to be identified in read write line reach, read write line can receive the tag responses signal of aliasing and interference, cause read write line to identify any one label, produce collision.In rfid system, the algorithm that solves tag-collision problem is called label anti-collision algorithm, and the quality of this algorithm performance directly affects the recognition capability of reader to many labels.Reader to the test of many tag recognition ability in, first method is the analogue simulation of anti-collision algorithm, the method can analyze the theoretical performance index of anticollision, but concrete reader to the aptitude tests of many tag recognition in, quality and problem place in reflection reader anticollision treatment scheme that can not be directly perceived, actual; Second method is built test platform by real a plurality of labels, but the requirement harsher to building of test platform when number of labels to be measured is very large.
Summary of the invention
The problems referred to above that exist for prior art, the present invention proposes a kind of ultrahigh frequency readers to many tag recognition performance test methods.
Technical scheme of the present invention is: a kind of ultrahigh frequency readers, to many tag recognition performance test methods, specifically comprises the following steps:
S1. initial configuration: configuration simulation label number, simulation label are taken inventory mark and the time slot value of each label in time slot value storer is set to 0;
S2. reader command analysis: resolve command type, the command parameter that reader sends according to command code in ultrahigh frequency readers agreement;
Whether the sign of S3. making an inventory mates: the mark of making an inventory of each label in the mark memory of making an inventory is mated with Target data in startup querying command, if equated, carry out step S4 operation, otherwise turn back to step S2;
S4. according to reader order, generate corresponding time slot value: according to different reader command types, label simulator produces time slot value correspondingly;
S5. time slot value is write input time slot value storer, and the counting that time slot value is equaled to 0: the time slot value producing in step S4 is write in label time slot value storer, judge that time slot value is zero number simultaneously;
S6. send and have collisionless handle response: if the number that the time slot value producing in S5 is zero is 1, label simulator sends collisionless handle response; If the number that time slot value is zero is not equal to 1, label simulator sends the response of the handle of collision, and after this response is sent completely, turns back to step S2;
S7.ACK command analysis: resolve ACK order according to command code in ultrahigh frequency readers agreement;
The overtime coding that sends of S8.T1 responds: label simulator is resolved to the ACK order beginning timing that reader sends, and sends coding and respond during the full T1 of timing, and wherein, T1 is predefined threshold value;
S9. coding response is sent the mark of making an inventory of rear reversion label simulator: the label that reversion has been identified the mark of making an inventory, and the mark value of making an inventory writes and makes an inventory in mark memory, after coding response is sent, turns back to S2.
Beneficial effect of the present invention: method of the present invention is the test to many tag recognition ability for the ultrahigh frequency readers that meets national military standard agreement, 100 above simulation labels of generation that can convenience and high-efficiency according to the configuration of number of tags, the number of simulation label is configurable flexibly, and the response of simulation label meets national military standard protocol requirement.Than building real many labels test platform, there is no strict requirement, and there is the advantages such as easy, dirigibility, be a kind of simple and effective, and be the important supplement method of many tag readable degrees of ultrahigh frequency readers aptitude tests
Accompanying drawing explanation
Fig. 1 is that ultrahigh frequency readers of the present invention is to many tag recognition performance test methods schematic flow sheet.
Embodiment
Below in conjunction with the drawings and specific embodiments, method of the present invention is further described.
The concrete thought of the inventive method is: according to number of tags initialization of register time slot value storer, the mark memory of making an inventory; Resolve the command type that reader sends, from read the mark memory of making an inventory, read the mark of making an inventory of each label, and the mark of making an inventory sending with reader mates; If coupling, according to corresponding reader order, produce time slot value, and time slot value is write in input time slot value storer, judge that time slot value is zero number simultaneously, if the number that time slot value is zero equals 1, send collisionless label handle response command, the address of recording this time slot value, and this address is added to value after 1 as the coded data for the treatment of responsive tags; If the number that time slot value is zero is not equal to 1, send the label handle response command that has collision.When label is received after ACK order, and meet that handle is correct and T1 is overtime simultaneously, send label coding response command, after response command to be encoded is sent, the make an inventory mark value of making an inventory of corresponding label in mark memory of reversion, turns back to and resolves the step that reader sends command type.
The corresponding one-tenth simulation of method time slot value of the present invention label, in storage space, needn't deposit the data content of each label, and each label does not need the independent protocol status that meets national military standard to process, saved greatly the consumption of the resources such as storage space, the size of number of tags directly depends on the size of time slot value storage space, and label time slot count value only takies the space of 15 of storeies, therefore can simulate generation hundred thousands of simulation labels at most at least.Can test convenient, flexibly the recognition capability of reader to many labels.
First the term of wherein using being done to one below explains:
Time slot value storer: according to the configuration of number of tags, the time slot value of storage respective number, each time slot value takies the storage space of 15, the coded data of the corresponding simulation label of cyclic address change of each time slot value.When label simulator receives after the order of reader transmission, the time slot value that label simulator produces different command according to the order of write-after-read is write in input time slot value storer.
The mark memory of making an inventory: label simulator receives after reader order, first from the mark memory of making an inventory, read the mark of making an inventory of each label, Target data field in the startup querying command sending with reader mates, for selecting to need the label of response.When label simulator sends after coding response, the mark of making an inventory corresponding to certain label reversed and write the mark memory of making an inventory.
Label coding storer: when the time slot value number that is zero equals 1, the address of this time slot value is added to 1 and write label coding storer as label coding data.When sending ACK order, the data in label coding storer are exported according to corresponding coded format coding.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, ultrahigh frequency readers of the present invention is as follows to the specific embodiments of many tag recognition performance test methods:
S1. initial configuration: configuration simulation number of tags register is M,
Initialization simulation label is taken inventory mark, that is, take inventory mark put 1bit zero and write and take inventory mark memory block M;
Initialization time slot value, that is, by M time slot value, each is put 15bit zero and writes input time slot value storer.
S2. reader command analysis: the processing relevant order to anticollision and comprise and start querying command (10100100b), repeat querying command (00b), division order (11b), disperse order (1000b), shrink order (1001b) of ultrahigh frequency national military standard agreement regulation, label simulator is decoded and is parsed mentioned order type by TPP;
Whether the sign of S3. making an inventory mates: the mark of making an inventory of each label in the mark memory of making an inventory is mated with Target data field in startup querying command, if equated, carry out step S4 operation, otherwise turn back to step S2;
S4. according to reader order, generate corresponding time slot value:
Label simulator is resolved to and starts after querying command, and M time slot value put to 15bit zero;
Label simulator is resolved to after repetition querying command, if the time slot value in time slot value storer is 0, time slot value is put to 7FFF, if time slot value is not 0, time slot value subtracts 1;
Label simulator is resolved to after the division order that division position is 00b, if the time slot value in time slot value storer is 0, generates 1 random number, and this random number is write to input time slot value; If time slot value is not 0, time slot value is added to 1;
Label simulator is resolved to after the division order that division position is 01b, if the time slot value in time slot value storer is 1, generates 1 random number, and this random number is write to input time slot value; If time slot value is not 1, time slot value remains unchanged;
Label simulator is resolved to and disperses, after order, to generate 1 random number, and time slot value is multiplied by 2 adds this random number;
Label simulator is resolved to and shrinks after order, and time slot value is divided by 2;
S5. the time slot value after mentioned order being changed is write input time slot value storer, and the counting that time slot value is equaled to 0: judge that time slot value is zero number simultaneously;
S6. send and have collisionless handle response: if the number that the time slot value producing in S5 is zero is 1, label simulator sends collisionless handle response, the address of this time slot value is deposited, jump to S7 and wait for that reader sends coding and obtains order (ACK); If the number that time slot value is zero is not equal to 1, label simulator sends the response of the handle of collision, and turns back to S2 after this response is sent completely;
S7. coding obtains order (ACK) parsing: according to command code (01b) in national military standard ultrahigh frequency readers agreement, resolve ACK order;
The overtime coding that sends of S8.T1 responds: ACK order and handle that label simulator is resolved to reader transmission effectively start timing, send coding response during the full T1 of timing;
S9. coding response is sent the mark of making an inventory of rear reversion label simulator: the label that reversion has been identified the mark of making an inventory, and the mark value of making an inventory writes and makes an inventory in mark memory, after coding response is sent, turns back to step S2.
Can find out, when many tag recognition of ultrahigh frequency reader-writer performance of testing based on national military standard agreement, the method that the embodiment of the present invention provides is compared current existing method simpler and more direct, efficient advantage.
Claims (3)
1. ultrahigh frequency readers, to many tag recognition performance test methods, specifically comprises the following steps:
S1. initial configuration: configuration simulation label number, simulation label are taken inventory mark and the time slot value of each label in time slot value storer is set to 0;
S2. reader command analysis: resolve command type, the command parameter that reader sends according to command code in ultrahigh frequency readers agreement;
Whether the sign of S3. making an inventory mates: the mark of making an inventory of each label in the mark memory of making an inventory is mated with Target data in startup querying command, if equated, carry out step S4 operation, otherwise turn back to step S2;
S4. according to reader order, generate corresponding time slot value: according to different reader command types, label simulator produces time slot value correspondingly;
S5. time slot value is write input time slot value storer, and the counting that time slot value is equaled to 0: the time slot value producing in step S4 is write in label time slot value storer, judge that time slot value is zero number simultaneously;
S6. send and have collisionless handle response: if the number that the time slot value producing in S5 is zero is 1, label simulator sends collisionless handle response; If the number that time slot value is zero is not equal to 1, label simulator sends the response of the handle of collision, and after this response is sent completely, turns back to step S2;
S7.ACK command analysis: resolve ACK order according to command code in ultrahigh frequency readers agreement;
The overtime coding that sends of S8.T1 responds: label simulator is resolved to the ACK order beginning timing that reader sends, and sends coding and respond during the full T1 of timing, and wherein, T1 is predefined threshold value;
S9. coding response is sent the mark of making an inventory of rear reversion label simulator: the label that reversion has been identified the mark of making an inventory, and the mark value of making an inventory writes and makes an inventory in mark memory, after coding response is sent, turns back to step S2.
2. ultrahigh frequency readers according to claim 1, to many tag recognition performance test methods, is characterized in that, the said command type of step S2 specifically comprises startup querying command, repeats querying command, divides order, disperses to order, shrinks and order.
3. ultrahigh frequency readers according to claim 2, to many tag recognition performance test methods, is characterized in that, step S4 generates corresponding time slot value according to reader order and is specially:
Label simulator is resolved to and starts after querying command, and M time slot value put to 15bit zero;
Label simulator is resolved to after repetition querying command, if the time slot value in time slot value storer is 0, time slot value is put to 7FFF, if time slot value is not 0, time slot value subtracts 1;
Label simulator is resolved to after the division order that division position is 00b, if the time slot value in time slot value storer is 0, generates 1 random number, and this random number is write to input time slot value; If time slot value is not 0, time slot value is added to 1;
Label simulator is resolved to after the division order that division position is 01b, if the time slot value in time slot value storer is 1, generates 1 random number, and this random number is write to input time slot value; If time slot value is not 1, time slot value remains unchanged;
Label simulator is resolved to and disperses, after order, to generate 1 random number, and time slot value is multiplied by 2 adds this random number;
Label simulator is resolved to and shrinks after order, and time slot value is divided by 2.
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Cited By (3)
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| CN108229230A (en) * | 2016-12-12 | 2018-06-29 | Em微电子-马林有限公司 | For providing the method for identification and access about RF tag |
| CN112232098A (en) * | 2020-10-15 | 2021-01-15 | 中国电子科技集团公司第五十四研究所 | Ultra-low power consumption digital baseband system based on ultrahigh frequency RFID (radio frequency identification) tag chip |
| CN113191476A (en) * | 2021-05-28 | 2021-07-30 | 中国人民解放军国防科技大学 | Multi-electronic-tag anti-collision method and system for passive radio frequency identification |
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| CN113191476A (en) * | 2021-05-28 | 2021-07-30 | 中国人民解放军国防科技大学 | Multi-electronic-tag anti-collision method and system for passive radio frequency identification |
| CN113191476B (en) * | 2021-05-28 | 2022-06-21 | 中国人民解放军国防科技大学 | Multi-electronic-tag anti-collision method and system for passive radio frequency identification |
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