JP6932606B2 - RFID media recognition method - Google Patents

Description

The present invention relates to an RFID media recognition method for recognizing identification information stored in RFID media, and in particular, identification information stored in a specific RFID media when reading identification information stored in a plurality of RFID media at once. The present invention relates to a technique for recognizing a character separately from identification information stored in other RFID media.

In recent years, with the development of the information-oriented society, information is recorded on labels and tags attached to products and the like, and the products and the like are managed using these labels and tags. In information management using such labels and tags, RFID media equipped with an IC chip capable of writing and reading information in a non-contact state with the labels and tags is excellent in convenience. Since then, it has been rapidly spreading.

In such RFID media, an ID that serves as unique identification information is stored, and the RFID media is identified by reading this ID, but the ID is read in a non-contact state. Therefore, IDs stored in a plurality of RFID media can be read at once (see, for example, Patent Document 1).

Re-table 2014-188653

However, when the ID is read from a plurality of RFID media at once as described above, there is a problem that it is difficult to recognize from which RFID media the ID is read. For example, if an ID label, which is an RFID medium, is attached to each item stored in a warehouse or the like, and the IDs are collectively read from a plurality of ID labels when the items are inventoried, which ID is read. It may not be possible to recognize whether it was read from the ID label affixed to the article.

The present invention has been made in view of the problems of the prior art as described above, and when the identification information stored in the plurality of RFID media is collectively read, the present invention is specified among the plurality of RFID media. It is an object of the present invention to provide an RFID media recognition method capable of recognizing the identification information stored in the RFID media of the above in distinction from the identification information stored in other RFID media.

In order to achieve the above object, the present invention
When the identification information stored in a plurality of RFID media is read at once, the identification information stored in a specific RFID media among the plurality of RFID media is recognized separately from the identification information stored in the other RFID media. RFID media recognition method
Each of the plurality of RFID media sets flag information indicating the presence or absence of contact according to the contact state from the outside.
With the specific RFID media in contact with the outside, identification information and flag information are read from a plurality of RFID media,
The identification information read from the RFID media from which the flag information indicating that there is contact from the outside is read is recognized as the identification information of the specific RFID media.

In the present invention configured as described above, the plurality of RFID media in which the identification information is stored each set flag information indicating the presence or absence of contact according to the contact state from the outside, and the plurality of RFID media are configured. When the identification information stored in the specific RFID media is recognized separately from the identification information stored in the other RFID media, the specific RFID media is identified from the plurality of RFID media in a state of being contacted from the outside. Information and flag information are read, and the identification information read from the RFID media from which the flag information indicating that there is contact from the outside is read is recognized as the identification information of the specific RFID media, and is stored in the specific RFID media. The identified identification information will be recognized separately from the identification information stored in other RFID media.

In that case, first, when the reader that reads the identification information from the RFID media supplies power to the RFID media and the RFID media is driven by the supplied power, a response signal indicating that effect is transmitted to the reader and from the outside. Flag information is set according to the contact state of, and when the reader receives a response signal from the RFID media, the identification information given to the RFID media and the flag information set to the RFID media are read from the RFID media. As a result, the reader recognizes the identification information read from the RFID media in which the flag information indicating that there is external contact is read, so that the identification information stored in the specific RFID media can be used as another identification information. It will be recognized separately from the identification information stored in the RFID media.

According to the present invention, each of the plurality of RFID media in which the identification information is stored sets flag information indicating the presence or absence of contact according to the contact state from the outside, and among the plurality of RFID media, identification is performed. With a specific RFID media for which information is to be recognized being contacted from the outside, identification information and flag information are read from a plurality of RFID media, and flag information indicating that there is contact from the outside is read from the read RFID media. By recognizing the identification information as the identification information of the specific RFID media, when the identification information stored in the plurality of RFID media is read in a batch, the identification stored in the specific RFID media among the plurality of RFID media is performed. The information can be recognized separately from the identification information stored in other RFID media.

For example, first, when a reader that reads identification information from the RFID media supplies power to the RFID media and the RFID media is driven by the supplied power, a response signal indicating that is transmitted to the reader and an external response signal is transmitted. Flag information is set according to the contact state, and when the reader receives a response signal from the RFID media, the identification information given to the RFID media and the flag information set to the RFID media are read from the RFID media. Then, the reader recognizes the identification information read from the RFID media in which the flag information indicating that there is contact from the outside is read, so that the identification information stored in the specific RFID media becomes the other RFID. It will be recognized separately from the identification information stored in the media.

It is a figure which shows one Embodiment of the RFID media used in the RFID media recognition method of this invention, (a) is a surface view, (b) is a cross-sectional view of AA'shown in (a), (c). Is a diagram showing the structure of the surface of the inlet sheet. It is a functional block diagram which shows the internal structure of the IC chip shown in FIG. It is a figure which shows an example of the environment in which the ID label shown in FIG. 1 and FIG. 2 is recognized. It is a figure which shows the use state of the ID label shown in FIG. 1 and FIG. It is a flowchart for demonstrating the specific processing of the ID label in the environment shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1A and 1B are views showing an embodiment of RFID media used in the RFID media recognition method of the present invention, in which FIG. 1A is a surface view and FIG. 1B is a cross-sectional view taken along the line AA'shown in FIG. , (C) is a diagram showing the structure of the surface of the inlet sheet 12. FIG. 2 is a functional block diagram showing the internal configuration of the IC chip 20 shown in FIG.

As shown in FIG. 1, the RFID media in this embodiment is an ID label 1 composed of a base base material 10, contact terminals 40a and 40b, antennas 30a and 30b, and an IC chip 20.

The base base material 10 is formed by sandwiching an inlet sheet 12 made of an insulating material such as paper or resin between a surface base material 11a made of an insulating material such as paper or resin and a label base material 11b. The inlet sheet 12, the surface base material 11a, and the label base material 11b have the same outer shape as each other, but the surface base material 11a has a notch portion 11c cut out from one side thereof. ..

The contact terminals 40a and 40b are formed on the laminated surface of the inlet sheet 12 with the surface base material 11a at regular intervals by printing using a conductive material such as conductive ink, and a part thereof is formed. It is exposed on the surface of the ID label 1 from the notch portion 11c. Since the contact terminals 40a and 40b are formed at regular intervals, the resistance value between the contact terminals 40a and 40b changes depending on whether the contact terminals are not contacted from the outside or contacted from the outside. do.

The antennas 30a and 30b have an isosceles triangular shape with the apex facing the surface base material 11a of the inlet sheet 12 across a gap as a feeding point by printing using a conductive material such as conductive ink. Is formed in. The antennas 30a and 30b are for performing non-contact communication by resonating with radio waves radiated from an externally provided reader.

The contact terminals 40a and 40b and the antennas 30a and 30b are not limited to those formed by printing, but are formed by removing unnecessary parts such as copper foil laminated on the base base material 10 by etching. It may be.

The IC chip 20 is connected to the contact terminals 40a and 40b and the antennas 30a and 30b and mounted on the inlet sheet 12. As shown in FIG. 2, the IC chip 20 includes a communication unit 21, a power supply generation unit 22, a resistance value detection unit 23, a storage unit 24, and a control unit 25. As the IC chip 20, for example, NTAG 213 TT manufactured by NXP Semiconductors may be used.

The communication unit 21 modulates and demodulates the information transmitted and received via the antennas 30a and 30b to enable non-contact communication with an externally provided reader. The power generation unit 22 generates a power source for driving the IC chip 20 by using the electric power supplied from the reader provided outside. The resistance value detection unit 23 detects the resistance value between the contact terminals 40a and 40b, and sets the flag information according to the detected resistance value. The storage unit 24 stores a program or the like for driving the IC chip 20, and is set by the ID area 24a that stores the ID that is the identification information assigned to the ID label 1 and the resistance value detection unit 23. It has a contact flag area 24b that stores the flag information. The control unit 25 controls the operations of the communication unit 21, the power generation unit 22, the resistance value detection unit 23, and the storage unit 24, and together with the ID stored in the ID area 24a during non-contact communication via the communication unit 21. , The flag information stored in the contact flag area 24b is transmitted via the communication unit 21.

The recognition method of the ID label 1 configured as described above will be described below.

FIG. 3 is a diagram showing an example of an environment in which the ID label 1 shown in FIGS. 1 and 2 is recognized. FIG. 4 is a diagram showing a usage state of the ID label 1 shown in FIGS. 1 and 2.

In the ID label 1 shown in FIGS. 1 and 2, the IDs stored in the ID area 24a may be collectively read for a plurality of ID labels 1. However, in that case, it is difficult to recognize from which ID label the read ID is read. For example, as shown in FIG. 3, ID labels 1a to 1f having the same configuration as the ID labels 1 shown in FIGS. 1 and 2 are attached to each of the articles 3a to 3f stored in a warehouse or the like. When the IDs are collectively read from the ID labels 3a to 3f by the reader 4 when the articles 3a to 3f are inventoried, the read ID is obtained from the ID label attached to any of the articles 3a to 3f. It may not be possible to recognize whether it has been read.

In this embodiment, the contact terminals 40a and 40b are provided, and a specific ID label among the ID labels 1a to 1f can be recognized by using the change in the resistance value between the contact terminals 40a and 40b. As described above, since the contact terminals 40a and 40b are formed at regular intervals, there are cases where the contact terminals 40a and 40b are not contacted from the outside and cases where the contact terminals 40a and 40b are contacted from the outside. The resistance value of is changed. Therefore, for example, when the IDs stored in the ID labels 1a to 1f are collectively read in the environment shown in FIG. 3, the ID read from the ID label 1b attached to the article 3b is used as another ID label 1a, 1c. When it is desired to recognize the ID separately from the ID read from 1f, only the ID label 1b of the ID labels 1a to 1f is brought into contact with the contact terminals 40a and 40b with the finger 2 as shown in FIG. 4A. In this state, non-contact communication is performed with the reader, and along with the IDs of the ID labels 1a to 1f, the flag information set according to the resistance values at the contact terminals 40a and 40b is transmitted from the ID labels 1a to 1f to the reader 4. By transmitting, the ID read from the ID label 1b among the ID labels 1a to 1f can be recognized separately from the ID read from the other ID labels 1a and 1c to 1f.

The specific processing of the ID labels 1a to 1f in the environment shown in FIG. 3 will be described below.

FIG. 5 is a flowchart for explaining the specific processing of the ID labels 1a to 1f in the environment shown in FIG.

In the environment shown in FIG. 3, among the ID labels 1a to 1f affixed to the articles 3a to 3f, the ID read from the ID label 1b is different from the ID read from the other ID labels 1a, 1c to 1f. If you want to recognize them separately, if you place the reader 4 in the communicable range with the ID labels 1a to 1f with your finger 2 in contact with the contact terminals 40a and 40b with only the ID label 1b, the reader 4 will first irradiate. Power is supplied to the ID labels 1a to 1f by radio waves (step 1).

Then, in the ID labels 1a to 1f, the radio waves radiated from the reader 4 are received by the antennas 30a and 30b, and the power generation unit 22 drives the IC chip 20 using the electric power supplied from the reader 4. The power supply of the above is generated, and the ID labels 1a to 1f are driven (step 2).

When the ID labels 1a to 1f are driven, a response signal indicating that the ID labels 1a to 1f are driven by the electric power supplied from the reader 4 is transmitted via the communication unit 21 (step 3).

Further, in the ID labels 1a to 1f, the resistance value detecting unit 23 detects the resistance value between the contact terminals 40a and 40b (step 4). Here, the resistance values between the contact terminals 40a and 40b are the state in which the finger 2 is in contact as shown in FIG. 4A and the finger 2 as shown in FIG. 4B. Are different from each other when they are not in contact with each other.

Therefore, in the ID labels 1a to 1f, for example, when a resistance value in a state where the finger 2 is in contact with the contact terminals 40a and 40b is detected, the control unit 25 displays "1" as flag information in the contact flag area 24b. When the resistance value is detected in a state where the finger 2 is not in contact with the contact terminals 40a and 40b, the control unit 25 sets "0" as flag information in the contact flag area 24b (step). 5). The resistance value when the finger 2 is in contact with the contact terminals 40a and 40b and the resistance value when the finger 2 is not in contact with the contact terminals 40a and 40b are set in advance as reference values by the control unit 25, respectively. The setting is set, and the control unit 25 can set the flag information by comparing the resistance value detected by the resistance value detection unit 23 with the reference value thereof. In this way, in the ID labels 1a to 1f, the resistance value between the contact terminals 40a and 40b is detected each time the ID label is driven, and the flag information corresponding to the resistance value is set. Therefore, the contact terminals 40a and 40b The flag information will change reversibly according to the resistance value between them, so that the ID labels 1a to 1f can be used repeatedly.

In the present embodiment, since the finger 2 is in contact with the contact terminals 40a and 40b of only the ID label 1b among the ID labels 1a to 1f, in the ID label 1b, the contact flag area 24b is set as flag information. 1 ”is set, and in the other ID labels 1a, 1c to 1f,“ 0 ”is set as flag information in the contact flag area 24b.

When the response signals transmitted from the ID labels 1a to 1f are received by the reader 4 (step 6), the request signal requesting the ID and flag information is transmitted from the reader 4 (step 7).

When the request signal transmitted from the reader is received via the antennas 30a and 30b of the ID labels 1a to 1f (step 8), the ID stored in the ID area 24a is contacted in each of the ID labels 1a to 1f. The flag information set in the flag area 24b and stored is read out by the control unit 25 and transmitted via the communication unit 21 and the antennas 30a and 30b (step 9).

The ID and flag information transmitted from the ID labels 1a to 1f are received by the reader 4 (step 10), and the ID received together with the flag information "1" is recognized as the ID of the ID label 1b by the reader 4. (Step 11).

As described above, in the present embodiment, the ID label 1b is set as a specific ID label among the plurality of ID labels 1a to 1f in which the ID is stored, and the ID of the ID label 1b is referred to as the ID of the other ID labels 1a, 1c to 1f. If you want to distinguish and recognize, ID labels 1a to 1f set flag information indicating the presence or absence of contact with the contact terminals 40a and 40b, respectively, and the contact terminals 40a and 40b of the ID label 1b are in contact with each other. The reader 4 reads the ID and flag information from the ID labels 1a to 1f, and the ID read from the ID label in which the flag information "1" indicating that there is contact with the contact terminals 40a and 40b is read is used as a specific ID label. By recognizing as the ID of the ID label 1b that becomes Can be recognized separately from.

In this embodiment, the contact terminals 40a and 40b formed on the inlet sheet 12 are partially exposed from the notch portion 11c on the surface of the ID label 1, but the contact terminals 40a and 40b The configuration may be such that everything is exposed. Further, the contact terminals 40a and 40b may be exposed from the end surface of the ID label 1 instead of the surface of the ID label 1, but in that case, the contact area between the contact terminals 40a and 40b and the finger or the like becomes narrow. , The resistance value between the contact terminals 40a and 40b does not change so much between the state where the finger or the like is in contact with the contact terminals 40a and 40b and the state where the finger or the like is not in contact with the contact terminals 40a and 40b. May be difficult.

Further, in the present embodiment, the contact terminals 40a and 40b are formed on one surface of the inlet sheet 12, but if each is connected to the IC chip 20, the contact terminals 40a and 40b are among the contact terminals 40a and 40b. One may be formed on one surface of the inlet sheet 12 and the other may be formed on the other surface of the inlet sheet 12.

Further, in the present embodiment, the surface base material 11a is cut out from one side thereof to form a notch portion 11c, and a part of the contact terminals 40a and 40b is exposed from the notch portion 11c. A part of the surface base material 11a may be hollowed out in a circular shape or the like, and a part of the contact terminals 40a and 40b may be exposed from the hollowed out portion. However, in the case of such a configuration, it is necessary to suck the hollowed out portion with a vacuum or the like in the manufacturing process, so that the productivity can be improved by using the notch 11c as in this embodiment.

Further, the present invention has been described by taking as an example an ID label 1 having an ID label 10 having an inlet sheet 12 sandwiched between a surface base material 11a and a label base material 11b as an RFID medium. The RFID media of the present invention includes an ID tag whose base base material is formed by sandwiching an inlet sheet between two surface base materials made of paper or the like, or an inlet sheet sandwiched between two card base materials. It may be an ID card or the like on which the base base material is formed.

1,1a ~ 1f ID label 2 Finger 3a ~ 3f Article 4 Reader 10 Base base material 11a Surface base material 11b Label base material 11c Notch part 12 Inlet sheet 20 IC chip 21 Communication part 22 Power supply generation part 23 Resistance value detection part 24 Storage unit 24a ID area 24b Contact flag area 25 Control unit 30a, 30b Antenna 40a, 40b Contact terminal

Claims (1)

When the identification information stored in a plurality of RFID media is read at once, the identification information stored in a specific RFID media among the plurality of RFID media is recognized separately from the identification information stored in the other RFID media. RFID media recognition method
Each of the plurality of RFID media sets flag information indicating the presence or absence of contact according to the contact state from the outside.
With the specific RFID media in contact with the outside, identification information and flag information are read from a plurality of RFID media,
In the RFID media recognition method, which recognizes the identification information read from the RFID media from which the flag information indicating that there is contact from the outside is read as the identification information of the specific RFID media.
A process in which a reader that reads identification information from the RFID media supplies power to the RFID media,
When the RFID media is driven by the electric power, the RFID media transmits a response signal to that effect to the reader and sets the flag information according to the contact state from the outside.
An RFID media recognition method comprising a process of reading identification information given to the RFID media and flag information set to the RFID media from the RFID media when the reader receives the response signal.

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