JP2019070945A - Rfid medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to identify when it is used for a different purpose or purpose. SOLUTION: Antennas 30a and 30b formed on a base base material 10 and a contact terminal 40a for detecting a change in resistance value due to a contact state from the outside, partly exposed on the base base material 10. , 40b and an IC chip 20 mounted on the base base material 10 that detects resistance values at the contact terminals 40a and 40b and transmits information according to the detected resistance values via the antennas 30a and 30b. [Selection diagram] Fig. 1

Description

  The present invention relates to an RFID medium capable of writing and reading information in a non-contact state, and more particularly to a technology that enables identification when one RFID medium is used for different applications.

  Recently, with the development of the information society, information is recorded on labels and tags attached to products and the like, and management of products and the like is performed using the 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 manner with respect to labels and tags has excellent convenience. It has been spreading rapidly since then.

  In such RFID media, an ID that is unique identification information is written, and by reading this ID, the RFID media is identified. Therefore, the RFID media is attached as a tag to the product etc. and the product is managed by reading the ID, or the person is held by the person as the ID card and the room is managed by reading the ID. (See, for example, Patent Document 1).

JP, 2015-149083, A

  In the RFID media described above, since a unique ID is written, for example, when it is used for entry and exit management, when exit is recognized by reading the ID, it is exit when returning home Although it is possible to recognize the RFID medium itself by the ID, such as not being able to recognize whether it is temporarily leaving the room, there is a problem that it is not possible to recognize even the purpose or application.

  Therefore, although it is conceivable to rewrite the ID according to the purpose or application, the ID is written as unique to the RFID media, and the rewriting is performed only at a specific place. It can not be easily rewritten, and it is difficult for one RFID media to recognize its purpose and application.

  The present invention has been made in view of the problems of the above-described conventional techniques, and it is an object of the present invention to provide an RFID medium that can identify such effects when used for different purposes and applications. Do.

In order to achieve the above object, the present invention is
A base material,
An antenna formed on the base substrate;
A contact terminal for detecting at least a portion of the resistance value change due to an external contact state, exposed at least partially on the base substrate;
And a circuit element mounted on the base material, detecting a resistance value of the contact terminal, and transmitting information according to the detected resistance value through the antenna.

  In the present invention configured as described above, the resistance value of the contact terminal differs depending on whether the contact terminal is externally contacted or not, and the resistance value is detected by the circuit element. Information corresponding to the detected resistance value is transmitted via the antenna. Therefore, when the identification information is read by non-contact communication, the information according to the resistance value detected by the circuit element is also read by non-contact communication, so that the contact terminal according to the purpose or application. If the user touches or does not touch, the effect can be identified when used for different purposes or applications.

  For example, at the time of non-contact communication, the first storage area storing the identification information given to the RFID medium, the second storage area storing the flag information corresponding to the resistance value at the contact terminal, and the circuit element A flag read together with the identification information by configuring the control unit to transmit the identification information stored in the first storage area and the flag information stored in the second storage area via the antenna. By referring to the information, it can be identified when used for different purposes and applications. At that time, the flag information has two values which are different from each other when the contact terminal is contacted from the outside and when the contact terminal is not contacted from the outside, and the two values are from the outside with respect to the contact terminal. The RFID medium can be used repeatedly if it changes reversibly due to the contact of.

  According to the present invention, at least a part of the contact terminal for detecting a change in resistance value due to an external contact state is exposed on the base substrate, and the circuit element mounted on the base substrate is Since the resistance value at the contact terminal is detected and the information corresponding to the detected resistance value is transmitted via the antenna, the detection may be performed by not touching the contact terminal depending on the purpose or application. The resistance value of the contact terminal to be used is changed, thereby making it possible to distinguish when used for different purposes and applications.

  Further, at the time of non-contact communication, the first storage area storing the identification information given to the RFID medium, the second storage area storing the flag information according to the resistance value at the contact terminal, and the circuit element In the configuration including the control unit that transmits the identification information stored in the first storage area and the flag information stored in the second storage area via the antenna, it is read together with the identification information. By referring to the flag information, it can be identified when used for different purposes and applications. At that time, the flag information has two values which are different from each other when the contact terminal is contacted from the outside and when the contact terminal is not contacted from the outside, and the two values are from the outside with respect to the contact terminal. The RFID medium can be used repeatedly if it changes reversibly due to the contact of.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows one Embodiment of the RFID media of this invention, (a) is a surface figure, (b) is an AA 'cross section shown to (a), (c) is the structure of the surface of an inlet sheet. FIG. It is a functional block diagram which shows the internal structure of the IC chip shown in FIG. It is a figure which shows the use condition of the ID tag shown to FIG. 1 and FIG. It is a flowchart for demonstrating the specific process in the ID tag shown to FIG. 1 and FIG.

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

  FIG. 1 is a view showing an embodiment of the RFID medium of the present invention, where (a) is a surface view, (b) is a cross-sectional view taken along line AA 'of (a), and (c) is an inlet sheet. It is a figure which shows the structure of 12 surfaces. FIG. 2 is a functional block diagram showing an internal configuration of the IC chip 20 shown in FIG.

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

  The base substrate 10 is configured by sandwiching an inlet sheet 12 made of an insulating material such as paper or resin between two card substrates 11a and 11b made of an insulating material such as resin. The outer shapes of the inlet sheet 12 and the card base members 11a and 11b are equal to each other, but the card base member 11a has a cutaway portion 11c cut out from one side thereof.

  The contact terminals 40a and 40b are formed on the surface of the inlet sheet 12 on the side of the card base 11a at a constant distance by printing using a conductive material such as a conductive ink, and a part thereof is formed. It is exposed to the surface of the ID card 1 from the notch 11 c. Since the contact terminals 40a and 40b are formed at a constant distance, the resistance value between the contact terminals 40a and 40b changes depending on the case where they are not in contact from the outside and the case where they are in contact from the outside. Do.

  The antennas 30a and 30b are formed by printing using a conductive material such as a conductive ink, and the shape of an isosceles triangle with the apex facing the space between the inlet sheet 12 and the card base 11a of the inlet sheet 12 as a feeding point. Is formed. The antennas 30 a and 30 b are for performing non-contact communication by resonating with radio waves emitted from a reader provided outside.

  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 portions such as copper foil laminated on the base substrate 10 by etching. It may be

  The IC chip 20 is a circuit element of the present invention, and is mounted on the inlet sheet 12 while being connected to the contact terminals 40 a and 40 b and the antennas 30 a and 30 b. As shown in FIG. 2, the IC chip 20 includes a communication unit 21, a power 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, it is conceivable to use NTAG 213 TT manufactured by NXP Semiconductors.

  The communication unit 21 modulates and demodulates information transmitted and received via the antennas 30a and 30b to enable contactless communication with a reader provided outside. The power supply generation unit 22 generates a power supply for driving the IC chip 20 using the power supplied from a reader provided outside. The resistance value detection unit 23 detects the resistance value between the contact terminals 40a and 40b, and sets flag information according to the detected resistance value. The storage unit 24 stores a program for driving the IC chip 20 and the like, and an ID area 24a serving as a first storage area storing an ID serving as identification information given to the ID card 1, and a resistance value A contact flag area 24b serving as a second storage area storing the flag information set by the detection unit 23 is provided. 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 at the time of non-contact communication via the communication unit 21, the ID stored in the ID area 24 a and The flag information stored in the contact flag area 24 b is transmitted via the communication unit 21.

  Below, the usage method of the ID card 1 comprised as mentioned above is demonstrated.

  FIG. 3 is a view showing a use state of the ID card 1 shown in FIG. 1 and FIG.

  The ID card 1 shown in FIG. 1 and FIG. 2 is identified by reading the ID stored in the ID area 24a. However, as described above, when the ID card 1 is used for a different purpose or application, the purpose or application can not be recognized only by reading the ID. For example, when the ID card 1 is used for entry and exit management, when exit is recognized by reading the ID, the ID card 1 itself can be recognized, but it is temporarily left when returning home Can not recognize if it is a

  In the present embodiment, the contact terminals 40a and 40b are provided, and it is possible to recognize the purpose and use of the ID card 1 by using the change in resistance value between the contact terminals 40a and 40b. As described above, since the contact terminals 40a and 40b are formed at a constant distance, between the contact terminals 40a and 40b depending on whether they are not in contact from the outside or are in contact from the outside. Change in resistance value. Therefore, for example, when the ID card 1 is used for entry and exit management, when returning home, as shown in FIG. 3A, between the reader and the reader in a state where the contact terminals 40a and 40b are not in contact with the finger 2. At the time of temporary leaving, as shown in FIG. 3 (b), the contact terminals 40a and 40b are in contact with the reader while the finger 2 is in contact with the contact terminals 40a and 40b. When leaving is recognized by reading the ID by performing contact communication and transmitting to the reader the flag information set according to the resistance value at the contact terminals 40a and 40b together with the ID of the ID card 1; It will be possible to recognize whether it is a leaving room at the time of returning home or a temporary leaving room.

  Hereinafter, specific processing in the ID card 1 shown in FIG. 1 and FIG. 2 will be described.

  FIG. 4 is a flowchart for explaining specific processing in the ID card 1 shown in FIGS. 1 and 2.

  When the ID card 1 shown in FIGS. 1 and 2 is read by a reader provided outside, power is first supplied to the ID card 1 by radio waves emitted from the reader (step 1).

  Then, in the ID card 1, the radio waves emitted from the reader are received by the antennas 30a and 30b, and the power generation unit 22 generates a power for driving the IC chip 20 using the power supplied from the reader. The ID card 1 is driven (step 2).

  In the ID card 1, when it is driven, a response signal indicating that it is driven by the power supplied from the reader is transmitted via the communication unit 21 (step 3).

  Further, in the ID card 1, the resistance value detection unit 23 detects the resistance value between the contact terminals 40 a and 40 b (step 4). Here, the resistance value between the contact terminals 40a and 40b is, as described above, a state in which the finger 2 is not in contact as shown in FIG. 3A, and as shown in FIG. 3B. It will mutually differ in the state which the finger 2 contacted.

  Therefore, in the ID card 1, for example, when the resistance value in a state where the finger 2 is not in contact with the contact terminals 40a and 40b is detected, the control unit 25 sets “0” as flag information in the contact flag area 24b. When the resistance value in the state where the finger 2 is in contact with the contact terminals 40a and 40b is detected, "1" is set as the flag information in the contact flag area 24b by the control unit 25 (step 5) . In addition, the resistance value in the state in which the finger 2 is not in contact with the contact terminals 40a and 40b and the resistance value in the condition in which the finger 2 is in contact with the contact terminals 40a and 40b are previously determined as reference values by the control unit 25. The flag information 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. As described above, in the ID card 1, the resistance value between the contact terminals 40a and 40b is detected each time it is driven, and the flag information according to the resistance value is set. Therefore, between the contact terminals 40a and 40b The flag information according to the resistance value changes reversibly, whereby the ID card 1 can be used repeatedly.

  When the response signal transmitted from the ID card 1 is received by the reader (step 6), a request signal requesting ID and flag information is transmitted from the reader (step 7).

  When the request signal transmitted from the reader is received through the antennas 30a and 30b of the ID card 1 (step 8), the ID stored in the ID area 24a and the flag set and stored in the contact flag area 24b The information is read 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 card 1 are received by the reader (step 10), the ID card 1 is identified by the received ID in the reader, and the use purpose and use of the ID card 1 according to the received flag information. For example, when ID card 1 is used for entry and exit control, when exit is recognized by reading the ID, it is recognized that it is exit or temporary exit when returning home. (Step 11).

  As described above, in the present embodiment, a part of the contact terminals 40a and 40b for detecting a change in resistance value due to a contact state from the outside is exposed on the base substrate 10, and the base substrate 10 The IC chip 30 mounted on the terminal detects the resistance value between the contact terminals 40a and 40b, and flag information set according to the detected resistance value is transmitted via the antennas 30a and 30b. Depending on the application, the resistance value between the contact terminals 40a and 40b to be detected is changed by contacting or not contacting the contact terminals, and thereby, when used for different purposes or applications. It becomes distinguishable.

  In the present embodiment, the contact terminals 40a and 40b formed on the inlet sheet 12 are partially exposed to the surface of the ID card 1 through the notch 11c, but the contact terminals 40a and 40b It is good also as composition which all expressed. Further, the contact terminals 40a and 40b may be exposed not from the surface of the ID card 1 but from the end face of the ID card 1. In that case, the contact area between the contact terminals 40a and 40b and the finger is narrowed. The resistance value between the contact terminals 40a and 40b does not change so much between the state in which a finger or the like is in contact with the contact terminals 40a and 40b and the state in which the fingers are not in contact. 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 configured to be connected to the IC chip 20, among the contact terminals 40a and 40b One side may be formed on one side of the inlet sheet 12 and the other side may be formed on the other side of the inlet sheet 12.

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

  Further, the present invention has been described by taking the ID card 1 having the base substrate 10 formed by sandwiching the inlet sheet 12 between two card substrates as an example of the RFID media, but the RFID media of the present invention As the ID sheet in which the base sheet is formed by sandwiching the inlet sheet between two surface base sheets made of paper or the like, and the inlet sheet is sandwiched between the surface base and the label base, the base group being base base It may be an ID label or the like made of a material.

DESCRIPTION OF SYMBOLS 1 ID card 2 finger | toe 10 base material 11a, 11b card base material 11c Notch part 12 inlet sheet 20 IC chip 21 communication part 22 power generation part 23 resistance value detection part 24 storage part 24a ID area 24b contact flag area 25 control part 30a, 30b Antenna 40a, 40b Contact terminal

Claims (2)

A base material,
An antenna formed on the base substrate;
A contact terminal for detecting at least a portion of the resistance value change due to an external contact state, exposed at least partially on the base substrate;
An RFID media mounted on the base material, detecting a resistance value at the contact terminal, and transmitting information corresponding to the detected resistance value via the antenna. In the RFID media of claim 1,
The circuit element is
A first storage area for storing identification information given to the RFID media;
A second storage area for storing flag information corresponding to the detected resistance value;
A controller configured to transmit identification information stored in the first storage area and flag information stored in the second storage area via the antenna during non-contact communication;
The flag information has two values which are different from each other when the contact terminal is in contact with the outside and when the contact terminal is not in contact with the outside, and the two values are external to the contact terminal. RFID media that changes reversibly by contact with

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