CN113496127A - Method, device and storage medium for performing selection and write operations on multiple CRFID tags - Google Patents
Method, device and storage medium for performing selection and write operations on multiple CRFID tags Download PDFInfo
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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
- G06K7/10118—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 the sensing being preceded by at least one preliminary step
- G06K7/10128—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 the sensing being preceded by at least one preliminary step the step consisting of detection of the presence of one or more record carriers in the vicinity of the interrogation device
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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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Abstract
The invention provides a method, a device and a storage medium for performing selection and write operations on a plurality of CRFID tags, wherein the method comprises the following steps: selecting an area with a preset length in each label of the CRFID label set; determining a value in the storage area of each tag based on a value of a characteristic of each tag and writing the value to the storage area of each tag; determining to execute a select command according to a CRFID tag to be selected, and executing the select command; the selected CRFID label is stored; and performing a write operation to the selected CRFID tag. By the method, the efficiency of selecting and writing a plurality of CRFID tags can be improved.
Description
Technical Field
The invention relates to the field of radio frequency chips, in particular to a multi-tag write operation scheme based on a CRFID (radio frequency identification) tag.
Background
A Computable Radio Frequency Identification (CRFID) is an emerging passive sensing node, is based on the traditional RFID technology, improves the traditional RFID tag, and has the functions of passive sensing and calculation. The advantages of the crsid tag are: on one hand, the EPC protocol realizes communication with the reader, self is powered by radio frequency signals from the reader, and data is transmitted in a backscattering mode, so that the EPC protocol has a passive characteristic; on the other hand, the CRFID is integrated with the MCU chip and the sensor, so that sensing and calculation of parameters such as acceleration, illumination, voltage and temperature can be realized, and the application field of the CRFID is greatly expanded.
Since the communication between the crfrid tag and the reader follows the EPC protocol, the reader needs to pass three commands of "select (select), inventory (inventory), and write (write)" every time it implements a write operation on one crfrid tag, so that when a plurality of tags are written, the three commands can only be sent to each tag in sequence, and each tag is read and written separately, which is very inefficient. There is therefore a need to provide a solution that improves the efficiency of write operations to multiple tags.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method, apparatus and storage medium for performing selection and write operations on a plurality of CRFID tags, which are used to overcome the above technical problems.
To achieve the above object, according to an aspect of the present application, there is provided a method of performing a write operation on a plurality of CRFID tags of a CRFID tag set, comprising: selecting an area with a preset length in each label of the CRFID label set; determining a value in the storage area of each tag based on a value of a characteristic of each tag and writing the value to the storage area of each tag; determining to execute a select command according to a CRFID tag to be selected, and executing the select command; the selected CRFID labels are stored; and performing a write operation on the selected CRFID tags.
Further, the preset length is determined based on the number of features of the CRFID tags in the CRFID tag set and the number of the CRFID tags.
Further, dividing the area with the preset length into a characteristic area and a numbering area; determining the value of the characteristic area of each label according to the characteristic of each label; and determining the value of the number area of each label according to the number of each label in the CRFID label set.
Further, the number of CRFID tags is selected according to a characteristic and/or a number.
According to another aspect of the present application, there is provided a method for selecting a plurality of CRFID tags of a CRFID tag set, comprising: receiving a select command; for each CRFID tag in the CRFID tag set: determining a continuous storage area in the select command based on the select command; comparing a value in the contiguous memory area to a value of a mask field in the select command; if the two are consistent, the CRFID tag is selected.
According to another aspect of the present application, there is provided an apparatus for performing a write operation to a plurality of CRFID tags of a CRFID tag set, comprising: a memory; and a processor configured to perform: selecting an area with a preset length in each label of the CRFID label set; determining a value in the storage area of each tag based on a value of a characteristic of each tag and writing the value to the storage area of each tag; determining to execute a select command according to a CRFID tag to be selected, and executing the select command; the selected CRFID labels are stored; and performing a write operation on the selected CRFID tags.
Further, the preset length is determined based on the number of features of the CRFID tags in the CRFID tag set and the number of the CRFID tags.
According to another aspect of the present application, there is provided an apparatus for selecting a plurality of CRFID tags of a CRFID tag set, comprising: a memory; and a processor configured to perform: receiving a select command; for each CRFID tag in the CRFID tag set: determining a continuous storage area in the select command based on the select command; comparing a value in the contiguous memory area to a value of a mask field in the select command; if the two are consistent, the CRFID tag is selected.
According to another aspect of the present application, there is provided a non-transitory storage medium having stored thereon instructions that, when executed by a processor, cause the processor to perform operations comprising: selecting an area with a preset length in each label of a CRFID label set; determining a value in the storage area of each tag based on a value of a characteristic of each tag and writing the value to the storage area of each tag; determining to execute a select command according to a CRFID tag to be selected, and executing the select command; the selected CRFID labels are stored; and performing a write operation on the selected CRFID tags.
According to another aspect of the present application, there is provided a non-transitory storage medium having stored thereon instructions that, when executed by a processor, cause the processor to perform operations comprising: receiving a select command; for each CRFID tag in the CRFID tag set: determining a continuous storage area in the select command based on the select command; comparing a value in the contiguous memory area to a value of a mask field in the select command; if the two are consistent, the CRFID tag is selected.
The method, the device and the storage medium for selecting and writing a plurality of CRFID labels can simultaneously select a plurality of CRFID labels or simultaneously write a plurality of CRFID labels, thereby reducing the number of select operations and greatly improving the processing efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic diagram of a method for simultaneously selecting multiple CRFID tags using a select command according to an embodiment of the present application.
FIG. 2 shows a schematic diagram of a method for simultaneously selecting multiple CRFID tags with a select command based on number and/or characteristics according to an embodiment of the present application.
FIG. 3 shows a flow diagram of a method for simultaneously selecting multiple CRFID tags and performing a write operation using a select command in accordance with an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
FIG. 1 shows a schematic diagram of a control mechanism utilizing a select command according to an embodiment of the present application. The figure is merely an example and is not intended to limit the scope of the present disclosure.
First, fields included in the select command are shown in table 1.
| Field(s) | Means of |
| target | Selecting zone bit |
| action | The operation is as follows: read or write |
| membank | A tag storage area: destination storage area of reader executing operation |
| pointer | Pointer: pointing to a location in a storage area |
| length | Length: length of mask |
| mask | Masking: user definition |
The user can select a particular tab by defining the six fields contained in the select command. Specifically, the following operations can be performed: first, a continuous storage area is located in the label through the membank, pointer and length fields, wherein the pointer points to the first address of the continuous storage area, then the values in the mask field and the continuous storage area are compared, and the label with the value in the continuous storage area consistent with the value in the mask field is selected. An embodiment of selecting tags 1 and 3 by a select command (2,0,3,4,3,101) is shown in FIG. 1.
As can be seen from the above embodiments, as long as one or more tags of interest have a piece of content that is different from other tags, the tag set consisting of the one or more tags can be selected by only one select command.
FIG. 2 shows a schematic diagram of multiple tags sharing the same select command, according to an embodiment of the present application. The figure is merely an example and is not intended to limit the scope of the present disclosure.
Assuming that the CRFID tag set contains n CRFID tags, for each of them, a region of length m +2n is selected, where m is the number of features in each tag. Since CRFID tags use different types of sensors, the characteristics are generally the type of sensory data. By using a select command, multiple tags matching the same memory region can be selected using the mask.
Specifically, a plurality of tags can be selected with one select command in the following manner. The previously selected region of length m +2n is divided into a feature region of length m and a numbered region of length 2 n. In the feature area, m bits corresponding to m features of the tag are stored, where each bit has a value of 0 or 1. The tags are numbered in the numbering area, and the m + i and m + n + i bits in the selected region of length m +2n of the i-th tag are set to 1, and the remaining bits are set to 0. By the above arrangement, a specific plurality of tags in the CRFID tag set can be matched according to features, numbers or a combination of the two. An example of m-3 and n-5 is shown in fig. 2.
1. In a first matching approach, the CRFID tags are selected using features. Assuming that it is desired that the selected CRFID tag have feature 1 and feature 2, but not feature 3, thenThe feature areas of these CRFID tags have a common mask of 110. A select command value of (2,0,3,1,3, 110) may be used2) At this point, tag 3 and tag 5 are selected.
2. In a second matching approach, the CRFID tags are selected using numbers. Assuming that the i-th to j-th tags in the CRFID tag set need to be selected, the j-i bits of the numbered regions of the tags starting from the m + j +1 bit are all 0, so 0 is the common mask of the numbered regions of the tags starting from the m + j +1 bit. Accordingly, the select command is of the form (2,0,3, m + j +1, j-i, 0). Specifically, if the 2-4 th tag is to be selected, the value of the select command is (2,0,3, 8,2, 0).
3. In a third matching approach, a combination of features and numbers is used to select CRFID tags. In this case, two select commands are required, and a group of crfrid tags in the crfrid tag set can be selected according to the number, and then a specific crfrid tag can be selected according to the characteristics.
FIG. 3 illustrates a flow diagram of a method of implementing a write operation to a plurality of selected CRFID tags in a CRFID tag set using a select command in accordance with an embodiment of the present application. The figure is merely an example and is not intended to limit the scope of the present disclosure.
As shown in fig. 3, the method comprises the steps of:
in step S310, determining the number of tags in the CRFID tag set and the feature number of the tags, and selecting a storage area with a preset length in each tag;
in step S320, determining values in the storage area of the preset length of the tag according to the value of the characteristic of each tag, and sequentially writing the values in the storage area of the preset length of the tag;
in step S330, the reader executes a corresponding select command according to the crfrid tag to be selected, and selects the crfrid tag;
in step S340, the reader sequentially inventories the selected CRFID tags;
in step S350, the reader sequentially performs writing operations on the batch of tags.
By the method, the reader reduces the number of select operations, so that the efficiency of writing to a plurality of CRFID tags can be greatly improved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of performing a write operation to a plurality of CRFID tags of a CRFID tag set, comprising:
selecting an area with a preset length in each label of the CRFID label set;
determining a value in the storage area of each tag based on a value of a characteristic of each tag and writing the value to the storage area of each tag;
determining to execute a select command according to a CRFID tag to be selected, and executing the select command;
the selected CRFID labels are stored; and
and executing write operation on the selected CRFID tags.
2. The method of claim 1, wherein the preset length is determined based on the number and number of features of the CRFID tags in the CRFID tag set.
3. The method of claim 2, wherein:
dividing the area with the preset length into a characteristic area and a numbering area;
determining the value of the characteristic area of each label according to the characteristic of each label; and
and determining the value of the number area of each label according to the number of each label in the CRFID label set.
4. The method of claim 3, wherein:
the number of CRFID tags is selected according to a characteristic and/or a number.
5. A method for selecting a plurality of CRFID tags of a CRFID tag set, comprising:
receiving a select command;
for each CRFID tag in the CRFID tag set:
determining a continuous storage area in the select command based on the select command;
comparing a value in the contiguous memory area to a value of a mask field in the select command;
if the two are consistent, the CRFID tag is selected.
6. An apparatus for performing a write operation to a plurality of CRFID tags of a CRFID tag set, comprising:
a memory; and
a processor configured to perform:
selecting an area with a preset length in each label of the CRFID label set;
determining a value in the storage area of each tag based on a value of a characteristic of each tag and writing the value to the storage area of each tag;
determining to execute a select command according to a CRFID tag to be selected, and executing the select command;
the selected CRFID labels are stored; and
and executing write operation on the selected CRFID tags.
7. The apparatus of claim 6, wherein the preset length is determined based on the number and number of features of CRFID tags in the CRFID tag set.
8. An apparatus for selecting a plurality of CRFID tags of a CRFID tag set, comprising:
a memory; and
a processor configured to perform:
receiving a select command;
for each CRFID tag in the CRFID tag set:
determining a continuous storage area in the select command based on the select command;
comparing a value in the contiguous memory area to a value of a mask field in the select command;
if the two are consistent, the CRFID tag is selected.
9. A non-transitory storage medium having instructions stored thereon, which, when executed by a processor, cause the processor to perform operations comprising:
selecting an area with a preset length in each label of a CRFID label set;
determining a value in the storage area of each tag based on a value of a characteristic of each tag and writing the value to the storage area of each tag;
determining to execute a select command according to a CRFID tag to be selected, and executing the select command;
the selected CRFID labels are stored; and
and executing write operation on the selected CRFID tags.
10. A non-transitory storage medium having instructions stored thereon, which, when executed by a processor, cause the processor to perform operations comprising:
receiving a select command;
for each CRFID tag in the CRFID tag set:
determining a continuous storage area in the select command based on the select command;
comparing a value in the contiguous memory area to a value of a mask field in the select command;
if the two are consistent, the CRFID tag is selected.
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| US20080018431A1 (en) * | 2004-02-06 | 2008-01-24 | Turner Christopher G G | Rfid Group Selection Method |
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| US20170228626A1 (en) * | 2014-09-03 | 2017-08-10 | Metso Flow Control Oy | Rfid reading method and rfid reader |
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- 2020-04-02 CN CN202010253977.XA patent/CN113496127A/en active Pending
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| US20080018431A1 (en) * | 2004-02-06 | 2008-01-24 | Turner Christopher G G | Rfid Group Selection Method |
| US20060187031A1 (en) * | 2005-02-07 | 2006-08-24 | Impinj. Inc. | Selecting RFID tags using memory-mapped parameters |
| US20070046432A1 (en) * | 2005-08-31 | 2007-03-01 | Impinj, Inc. | Local processing of received RFID tag responses |
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