CN111401093B - RFID tag identification method, device, computer equipment and storage medium - Google Patents
RFID tag identification method, device, computer equipment and storage medium Download PDFInfo
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- 238000012360 testing method Methods 0.000 description 4
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10198—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves setting parameters for the interrogator, e.g. programming parameters and operating modes
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Abstract
The application relates to an RFID tag identification method, an RFID tag identification device, computer equipment and a storage medium. The method comprises the following steps: reading first data of the RFID tag set within a first preset time; identifying according to the first data, and acquiring the number of the identified RFID tags; in response to the fact that all RFID tags are not recognized according to the first data, polling second data of the read RFID tag set with a second preset time as a period; and identifying according to the second data of each period to obtain an identification result of the RFID tag set. According to the method, the real identification time of the RFID tag is closer to the theoretical identification time by carrying out identification for one time in the first preset time and then carrying out polling identification in the second preset time, so that the identification efficiency is improved.
Description
Technical Field
The present disclosure relates to the field of radio frequency identification, and in particular, to a method, an apparatus, a computer device, and a storage medium for identifying an RFID tag.
Background
Radio frequency identification is a non-contact, low-power-consumption identification technology, and has been widely used in recent years as an electronic tag to be attached to an article to rapidly identify commodity information. However, the read/write times of different RFID tags may vary, depending on the environment, the number of items, and even the nature of the items. The conventional RFID tag is identified by performing a polling scan with a fixed period of time.
Referring to fig. 1, fig. 1 shows the relationship between the identification time and the identification rate in an ideal state, but the identification time of the tag cannot be infinitely prolonged in the actual use process, that is, the conventional method of performing the polling scan with a fixed time period requires a long time for identifying the tag, and the identification efficiency is long compared with the actual identification time and the theoretical identification time of the tag, which is needed to be improved.
Disclosure of Invention
Based on this, it is necessary to provide an RFID tag identification method, apparatus, computer device, and storage medium in view of the above technical problems.
A method of RFID tag identification, the method comprising:
reading first data of the RFID tag set within a first preset time;
identifying according to the first data, and acquiring the number of the identified RFID tags;
in response to the fact that all RFID tags are not recognized according to the first data, polling second data of the read RFID tag set with a second preset time as a period;
and identifying according to the second data of each period to obtain an identification result of the RFID tag set.
In one embodiment, the method further comprises:
carrying out polling recognition training by using an RFID tag set sample, and acquiring the recognition rate of each polling period, wherein the polling period of the polling recognition training is smaller than the first preset time;
determining the first preset time and the second preset time according to the identification rate of each polling period
And determining the number of times of polling and reading the RFID tag set by taking the second preset time as a period according to the identification rate of each polling period.
In one embodiment, the step of determining the first preset time and the second preset time according to the identification rate of each polling period includes:
responding to the identification rate of a certain polling period to be more than or equal to a first preset value, and taking the duration time of the certain polling period as the first preset time;
comparing the identification rate of the polling period after the certain polling period with the identification rate of the first preset time;
and in response to the recognition rate of the other polling period after a certain polling period being greater than the recognition rate of the first preset time, subtracting the first preset time from the duration of the other polling period to obtain a second preset time.
In one embodiment, the method further comprises:
determining the identification completion time of the RFID tag set sample according to the identification rate of each polling period, wherein the identification completion time is the duration time of the polling period when the identification rate reaches one hundred percent for the first time;
and determining the times of polling and reading the RFID tag set by taking the second preset time as a period according to the identification completion time and the second preset time.
In one embodiment, the number of times the RFID tag set is read within a second preset time is calculated by using a formula I;
wherein y represents the number of times of reading the RFID tag set within the second preset time, [ · ] represents the pair-rounding, x represents the difference between the recognition completion time and the first preset time, and z represents the second preset time.
In one embodiment, the method further comprises:
calculating the identification rate of each second data;
and stopping identification in response to the identification rate of certain second data being greater than or equal to a second preset value.
In one embodiment, the method is for an unmanned sales counter.
In another aspect of the invention, an RFID tag identification device is provided, and the method is used.
In another aspect of the present invention, there is also provided a computer device comprising a memory, at least one processor and a computer program stored on the memory and executable on the processor, the processor executing the method as described above.
In another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium storing a computer program which, when executed by a processor, performs the above-described method.
According to the RFID tag identification method, the RFID tag identification device, the computer equipment and the storage medium, the real identification time of the RFID tag is closer to the theoretical identification time by carrying out identification for one time in the first preset time and then carrying out polling identification in the second preset time, so that the identification efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other embodiments may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a graph showing the relationship between the recognition time and recognition rate of an ideal state tag;
FIG. 2 is a flow chart of a method of RFID tag identification provided by one embodiment;
FIG. 3 is a flowchart of determining a first preset time, a second preset time and a recognition number according to another embodiment;
FIG. 4 is a graph of recognition rate versus recognition time obtained by the RFID tag recognition method of the present invention in one embodiment;
FIG. 5 is a graph of user satisfaction versus recognition time provided by one embodiment;
fig. 6 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that, in the embodiments of the present invention, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present invention, and the following embodiments are not described one by one.
In one embodiment, referring to fig. 2, a method for identifying an RFID tag is provided, and specifically includes the following steps:
s200, reading first data of an RFID tag set in a first preset time;
s400, identifying according to the first data, and acquiring the number of the identified RFID tags;
s600, in response to the fact that all RFID tags are not recognized according to the first data, second data of the read RFID tag set are polled by taking second preset time as a period;
s800, identifying according to the second data of each period to obtain an identification result of the RFID tag set.
According to the RFID tag identification method, the real identification time of the RFID tag is closer to the theoretical identification time by carrying out identification for one time in the first preset time and then carrying out polling identification in the second preset time, so that the identification efficiency is improved.
In yet another embodiment, the application of the RFID tag to the article is to construct an RFID tag set sample, where all articles in one tag set are identified together when it is required to be described, that is, the RFID reader receives data of each RFID tag simultaneously, where the RFID tag set sample includes multiple types of articles, such as paper articles, plastic articles, and metal articles, and the like, and each corresponding RFID tag stores data information for representing the article in advance, for example, the RFID tag set sample includes 5 RFID tags, assuming that the theoretical identification time of the RFID tag of 3 articles is 1S, the theoretical identification time of the RFID tag of 2 articles is 3S, and the theoretical identification time of the RFID tag of the remaining articles is 6S, as shown in fig. 3, the RFID tag identification method of the embodiment specifically includes the following steps:
s110, carrying out polling recognition training by using an RFID tag set sample, and acquiring the recognition rate of each polling period, wherein the polling period of the polling recognition training is smaller than the first preset time;
the recognition rate refers to the ratio of the number of recognized tags to the tag set. For example, if the polling period is 1s for the RFID tag set sample, all the products are identified after 6 polling identifications are performed, and the identification rate of each polling period is calculated as shown in the following table.
| Time | 1S | 2S | 3S | 4S | 5S | 6S |
| Recognition rate | 0.6 | 0.6 | 0.8 | 0.8 | 0.8 | 1 |
S120, determining the first preset time and the second preset time according to the identification rate of each polling period;
the step 120 specifically includes:
s121, responding to the identification rate of a certain polling period to be larger than or equal to a first preset value, and taking the duration of the certain polling period as the first preset time. For example, the first preset value may be set to 0.6, and after the first poll, the current identification rate reaches 0.6, although the identification rate at the time of the second poll is still 0.6, which is set for 1S at the first preset time in this implementation. It will be understood, of course, that the first preset value may be other values, and may be set according to specific data during implementation, which is not limited by the present invention.
S122, comparing the identification rate of the polling period after the certain polling period with the identification rate of the first preset time;
and S123, in response to the recognition rate of another polling period after a certain polling period being greater than the recognition rate of the first preset time, subtracting the first preset time from the duration of the other polling period to obtain a second preset time. Continuing with the above table as an example, the second preset time in this embodiment is set to 2S if the recognition rate changes at 3S in the polling period after 1S. It will be understood, of course, that the second preset value may be any other value, and may be set according to specific data during implementation, which is not limited by the present invention.
S130, determining the number of times of polling the read RFID tag set with the second preset time as a period according to the identification rate of each polling period.
The step 130 specifically includes:
s131, determining the identification completion time of the RFID tag set sample according to the identification rate of each polling period, wherein the identification completion time is the duration time of the polling period when the identification rate reaches one hundred percent for the first time;
and continuing to perform parameter list-up, wherein 5 list-up in the RFID tag set sample is recognized and processed at the 6 th s, and then the recognition completion time of the RFID tag set sample is 6s.
S132, determining the times of polling and reading the RFID tag set by taking the second preset time as a period according to the identification completion time and the second preset time. The number of times of polling with the second preset time can be calculated and read the number of times of RFID label set in the second preset time by using the formula 1; specifically, the numerical values in the table and the obtained first preset time and second preset time are substituted into a formula, and then the reading times are determined to be 3.
Wherein y represents the number of times of reading the RFID tag set within the second preset time, [ · ] represents the pair-rounding, x represents the difference between the recognition completion time and the first preset time, and z represents the second preset time.
According to the RFID tag identification method, the first preset time, the second preset time for polling and the polling times are determined by using the RFID tag set sample, so that parameters identified by the RFID tags are closer to reality and are easy to combine with different application scenes.
In yet another embodiment, the method of the present invention further comprises the steps of:
s910, calculating the identification rate of each second data;
and S920, stopping identification in response to the identification rate of a certain second data being greater than or equal to a second preset value.
It should be specifically noted that, the second preset value in this embodiment may be adjusted according to the requirement of the user, for example, ninety percent of the user needs to be identified and the identification may be stopped, so that no polling is required, and even if the set polling times are not reached, the identification may still be stopped.
In another embodiment, the RFID tag identification method is applied to an unmanned sales counter, and the specific flow is as follows:
the RFID tag is attached to a specified commodity for testing and is placed in an unmanned sales counter, a commodity name list corresponding to the commodity for testing is set to ensure that all the commodity for testing can be identified, wherein the RFID tag is attached to the commodity for testing, the identification result, namely the identification time of each polling, the identification times and the identification rate of the current identification are obtained through training, and the first preset time, the second preset time and the identification times are determined by using the obtained identification result. In actual use, the unmanned sales counter reads data from all the tag sets to be identified on the first preset time line, and performs commodity name identification, and if all the RFID tags are identified, the identification is stopped without continuous polling. If the unrecognized commodity exists, the unmanned sales counter performs polling recognition by taking the second preset time as a period until all RFID tags are recognized or the current recognition rate reaches the requirement of a user.
As shown in FIG. 4, the comparison chart of the recognition rate and time obtained by the method and the comparison chart of the user satisfaction degree and the recognition time shown in FIG. 5 are obtained, the recognition time and the recognition accuracy rate are considered by the method, the recognition requirement of a user is ensured, and meanwhile, less recognition time is adopted as much as possible, so that the method has better recognition efficiency.
In view of the above object, a second aspect of the embodiments of the present invention proposes an RFID tag identification apparatus capable of being used for an RFID tag. The RFID tag identification device uses the RFID tag identification method.
According to another aspect of the present invention, there is provided a computer device, which may be a server, and an internal structure thereof is shown in fig. 6. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is for storing data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements the RFID tag identification method described above.
According to yet another aspect of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the RFID tag identification method described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (6)
1. A method of RFID tag identification, the method comprising:
reading first data of the RFID tag set within a first preset time;
identifying according to the first data, and acquiring the number of the identified RFID tags;
in response to the fact that all RFID tags are not recognized according to the first data, polling second data of the read RFID tag set with a second preset time as a period;
identifying according to the second data of each period to obtain an identification result of the RFID tag set;
the method further comprises the steps of:
carrying out polling recognition training by using an RFID tag set sample, and acquiring the recognition rate of each polling period, wherein the polling period of the polling recognition training is smaller than the first preset time;
determining the first preset time and the second preset time according to the identification rate of each polling period
Determining the number of times of polling and reading the RFID tag set by taking the second preset time as a period according to the identification rate of each polling period;
the step of determining the first preset time and the second preset time according to the identification rate of each polling period includes:
responding to the identification rate of a certain polling period to be more than or equal to a first preset value, and taking the duration time of the certain polling period as a first preset time;
comparing the identification rate of the polling period after the certain polling period with the identification rate of the first preset time;
responding to the recognition rate of another polling period after the certain polling period is larger than the recognition rate of the first preset time, and subtracting the first preset time from the duration of the other polling period to obtain a second preset time;
the method further comprises the steps of:
determining the identification completion time of the RFID tag set sample according to the identification rate of each polling period, wherein the identification completion time is the duration time of the polling period when the identification rate reaches one hundred percent for the first time;
determining the times of polling and reading the RFID tag set by taking the second preset time as a period according to the identification completion time and the second preset time;
calculating the times of reading the RFID tag set in the second preset time by using a formula I;
wherein ,
indicating the number of times of reading the set of RFID tags within a second preset time,/for a second preset time>
Representation pair->
Rounding up and/or taking in>
Representing the difference between the recognition completion time and the first preset time,/for the first preset time>
Representing a second preset time.
2. The method of claim 1, wherein the method further comprises:
calculating the identification rate of each second data;
and stopping identification in response to the identification rate of certain second data being greater than or equal to a second preset value.
3. The method of any one of claims 1-2, wherein the method is used in an unsold cabinet.
4. An RFID tag identification device, characterized in that the device uses the method according to claim 1 or 2.
5. A computer device comprising a memory, at least one processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the method of any of claims 1-3 when the program is executed.
6. A computer readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, performs the method of any of claims 1-3.
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