JP2006139544A - Active rfid-tag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact active RFID-TAG made available in a long term in which a power source is freely exchangeable, and the transmission output of an electrmagnetic wave is improved. <P>SOLUTION: This active RFID-TAG 1 is provided with an RFID-TAG 10 having flexibility including a sheet 20 on which power source terminal parts 21 and 22 are formed and an IC chip (integrated circuit) 30 and an antenna 40 on the sheet 20 and a battery 80 for supplying a power to the IC chip 30. The RFID-TAG 10 is attached along the surface of the battery 80. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an active RFID-TAG, and more particularly to an active RFID-TAG having a power source and configured to be mounted on the surface of the power source.

  2. Description of the Related Art Conventionally, in an electronic tag in a delivery system such as a courier service, a sheet as a flexible base part and a response circuit and a battery are provided at a reinforcing part at the end of the sheet. The response circuit and the battery are covered with an elastic member to protect them from external pressure, and the sheet is further provided with an antenna made of a thin film. An electronic tag is known (for example, see Patent Document 1).

  In addition, as a solid identification device, a capsule-type container has a control circuit, a power supply, a sensor, and an antenna, and is activated by receiving an electromagnetic wave transmitted from a reader, and an ID code for solid identification and data detected by the sensor are received. What transmits by an electromagnetic wave is known (for example, refer patent document 2).

JP-A-4-359183 (pages 3, 4 and FIG. 1) JP-A-6-276877 (8th and 9th pages, FIG. 8)

  In Patent Document 1, such a built-in battery is a thin-film battery that is manufactured by a semiconductor process, so that the battery capacity is limited, and the battery is covered with an elastic member to protect the battery. If the battery cannot be replaced and the battery capacity is exhausted, it must be discarded. Furthermore, since the response circuit and the battery are provided in the reinforcing portion, it is difficult to mount the response circuit and the battery on a cylindrical curved surface having a large curvature even if the response circuit and the battery are formed on a flexible sheet.

  Further, in Patent Document 2 described above, since a control circuit, a power source, a sensor, and an antenna are incorporated in a capsule-type container, it is difficult to reduce the size as a solid identification device, and it is predicted that replacement of a battery is also difficult. The Further, since the sensor is also incorporated in the capsule, there is a problem that the sensing target is limited when sensing the environment outside the capsule.

  An object of the present invention is to solve the above-mentioned problems, and it is possible to increase the degree of freedom in selecting the type of power source and to replace the power source, and to be used over a long period of time. The present invention is to provide a small active RFID-TAG that can increase the frequency.

The active RFID-TAG of the present invention includes a flexible RFID-TAG including a sheet on which a power supply connection portion is formed, an integrated circuit and an antenna on the main surface of the sheet, and power to the integrated circuit. And an RFID-TAG is mounted along a surface of the power source.
Here, the RFID-TAG having flexibility means that each of the sheet, the integrated circuit, and the antenna has flexibility.

  According to the present invention, since the RFID-TAG is mounted along the surface of the power supply, the power supply is not limited to the size of the power supply, and the RFID-TAG has flexibility, so It is possible to provide an active RFID-TAG that is not limited to the surface shape of the active RFID. Furthermore, since the power supply is provided, the output of electromagnetic waves (radio waves) can be increased and the amount of data of transmitted / received radio waves can be increased as compared to the type of RFID-TAG that does not have a power supply. You can also increase the distance.

Further, it is preferable that the power source is a battery having a cylindrical shape, a quadrangular prism shape, or a curved surface on the side surface, and the RFID-TAG is mounted along the side surface of the battery.
Here, the types of batteries are, for example, primary batteries and secondary batteries, and the shapes are cylindrical, button-shaped, coin-shaped, card-shaped (sheet-shaped), rectangular and other non-circular special-shaped batteries. Can be adopted.

  Since the RFID-TAG according to the present invention has flexibility, it can be mounted along the battery side without being limited to the shape of the battery.

  In the structure of the present invention, it is preferable that the RFID-TAG and the power supply are detachably mounted.

In this way, when the capacity of the battery decreases, the battery can be replaced and can be used for a long time.
Furthermore, there is an effect that it can be used by changing the type of the battery, such as the capacity and rated voltage of the battery, if necessary.

In the above-described structure, it is preferable that the power source and the RFID-TAG are attached with a removable adhesive.
Here, the pressure-sensitive adhesive refers to, for example, a material having an adhesive effect that can be repeatedly stuck and peeled.

  In this way, the RFID-TAG can be attached to the power source and can be peeled off, and can be easily attached and detached, and the RFID-TAG can be used repeatedly, which contributes to cost reduction. be able to.

Moreover, it is preferable that each of the positive electrode terminal and the negative electrode terminal provided in the power supply and the power supply connection portion are attached with a detachable conductive adhesive.
In addition, it is desirable to connect a power supply connection part, a positive electrode terminal, and a negative electrode terminal with a conductive adhesive, and to employ | adopt an insulating adhesive for the other part of a power supply and RFID-TAG, for example.

  According to such a structure, since the positive electrode terminal, the negative electrode terminal, and the power supply connecting portion are attached with the conductive adhesive, the connection between the power supply and the RFID-TAG can be easily performed, As a result, power can be reliably supplied to the integrated circuit.

The integrated circuit preferably includes at least wireless communication means, a CPU for controlling the integrated circuit, a storage circuit, and a sensor.
Here, examples of the sensor include a temperature sensor, a humidity sensor, and a gas sensor.

As will be described in detail later, the integrated circuit includes the above-described functional elements, and includes a wireless communication unit and a sensor. For example, in addition to an ID code such as a conventional RFID-TAG, The detection data by the sensor can be transmitted. Further, in the present invention, since a power source is provided, sufficient power can be supplied even if a sensor that consumes high power, such as a sensor, is incorporated.
Further, since the above-described functional element is incorporated in the integrated circuit, the configuration is simplified and the size can be reduced.

  Further, a connection lead pattern connected to the power source formed in the power source connection portion is formed on the main surface opposite to the antenna of the sheet, and through a contact hole, on the same main surface as the antenna, It is preferable to be connected to the integrated circuit.

  The antenna and the connection lead pattern are both connected to the integrated circuit. At this time, it is predicted that the antenna sensitivity will be lowered if the antenna and the connection lead pattern intersect on the same main surface. Therefore, in the present invention, the antenna and the connection lead pattern are formed on the main surface on the opposite side across the sheet. This can reduce a decrease in antenna sensitivity.

Furthermore, in the structure of the present invention, it is desirable to provide a protective layer having flexibility on the surface of the integrated circuit of the RFID-TAG and the antenna.
Here, as the protective layer, for example, a thin film sheet having insulation and flexibility, a liquid laminating agent, and the like can be employed.

  In this way, the integrated circuit and the antenna can be protected from moisture, dust, pressure, and the like from the outside, and reliability can be improved. Moreover, since the protective layer has flexibility, the characteristic that the RFID-TAG which is the gist of the present invention by providing the protective layer has flexibility is not lost.

  Further, it is preferable that an opening for exposing a predetermined range of a sensor built in the integrated circuit is formed in the protective layer.

  As described above, it is conceivable to employ a temperature sensor, a humidity sensor, a gas sensor, or the like as the sensor, but in general, a humidity sensor, a gas sensor, or the like can be sensed by being directly exposed to a measurement environment. In this case, since a predetermined range of the sensor is opened, accurate sensing can be performed. In addition, since the outside of the predetermined range of the sensor is protected by the protective layer, high reliability can be maintained over a long period of time.

Moreover, in this invention, it is preferable to provide an insulating layer between the said power supply and the said RFID-TAG.
In addition, as an insulating layer, the sticking of an insulating sheet, application | coating of an insulating agent, etc. are employable, for example.

  When adopting a battery as a power source, there is a battery whose side surface is formed of a metal can. Further, as described above, since the connection lead pattern with the power source is formed on the surface of the sheet opposite to the antenna, short circuit of the connection lead pattern with the power source can be prevented by providing an insulating layer.

Moreover, it is preferable to provide a heat insulation layer between the surface of the power source and the RFID-TAG.
In particular, when a temperature sensor is used as the sensor, the distance between the sensor and the power source is small, and in this case, it is considered that the heat around the sensor propagates to the power source. In addition, since the heat propagation can be reduced, the temperature can be accurately detected.

  Moreover, it is preferable that the antenna extends in a range that can be substantially visually recognized from the center line of the radio wave directing direction.

  When the power source is cylindrical, when the RFID-TAG is mounted along the side surface of the power source, it is conceivable that the antenna extends from the directivity direction of the radio wave in the shadow direction of the power source. If the antenna has such a configuration, it is conceivable that the antenna sensitivity decreases in the shadow direction of the power source. Therefore, by appropriately designing the antenna within a range that does not fall in the shadow direction of the power supply, it is possible to reduce a decrease in antenna sensitivity even when the RFID-TAG is attached to the power supply.

  Moreover, in this invention, it is preferable to provide further the RFID-TAG connection member which has an elastic part which presses and connects the said power supply connection part to each of the positive electrode terminal and negative electrode terminal of the said power supply.

  According to such a structure, since the positive electrode terminal and the negative electrode terminal of the power source and the power source connection portion formed on the sheet are pressed and connected by the elastic portion of the RFID-TAG connection member, the connection with the power source is ensured. It can be performed and can be easily attached to and detached from the power source.

  Furthermore, in the structure of the present invention, an elastic part that presses the RFID-TAG on the side surface of the power supply, and an elastic part that presses and connects the power supply connection part to the positive electrode terminal and the negative electrode terminal of the power supply, respectively. It is preferable that an RFID-TAG holding member is further provided, and the RFID-TAG is detachably attached to the power source.

  In this case, the RFID-TAG holding member presses and holds the RFID-TAG on the side surface of the power supply, and the power supply connection portion is pressed and connected to the positive terminal and the negative terminal of the power supply. In addition to making mounting easier, there is an effect that it can be freely attached and detached. In addition, by mounting this RFID-TAG holding member, for example, when the power source is a cylindrical battery, there is an effect that a certain posture can be held.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show an active RFID-TAG according to the first embodiment of the present invention, FIG. 5 shows the second and third embodiments, FIG. 6 shows the fourth embodiment, and FIG. 7 shows the fifth embodiment. FIG. 8 shows a sixth embodiment, FIG. 9 shows a seventh embodiment, and FIG. 10 shows a modified example.
(Embodiment 1)

1 to 4 show an active RFID-TAG (Radio Frequency Identification-TAG) according to the first embodiment.
FIG. 1 is a plan view showing an RFID-TAG according to the first embodiment, and FIG. 2 is a cross-sectional view of the main part showing the AA cross section of FIG. 1 and 2, an RFID-TAG 10 has, as a basic configuration, an integrated circuit 30 that performs overall control of the RFID-TAG at a substantially center of a sheet 20 as a base and one main surface (front surface) 23 of the sheet 20. (Hereinafter, the integrated circuit 30 is simply referred to as an IC chip 30) and an antenna 40 surrounding the IC chip 30 are provided and formed in an inlet shape.

  The IC chip 30 incorporates a functional circuit element (see FIG. 3), which will be described later, in one IC chip, and is formed to a thickness appropriately selected within a range of 30 μm to 60 μm by processing means such as lapping. . Experiments confirm that if the thickness is 30 μm, the minimum curvature radius is in a range that does not break even when curved to about 2 mm, and if the thickness is 60 μm, the minimum curvature radius is in a range that does not crack even if curved to about 8 mm. Has been. Therefore, the thickness of the IC chip 30 is set based on the balance between the curvature radius of the side surface of the battery 80 (see FIG. 4) as a selected power source, which will be described later, and the desired RFID-TAG performance. The IC chip 30 is connected to the terminal portions 41 and 42 of the antenna 40 by a gold wire 35.

  The antenna 40 is an air-core antenna formed of copper foil or the like so as to be wound around the IC chip 30. The antenna 40 has an intersection 43 between the terminal unit 41 and the terminal unit 42. At the intersection 43, an insulating layer (not shown) is provided between the intersections.

On the sheet 20, power supply terminal portions 21 and 22 as power supply connection portions project outward from the outer end portions facing each other with the IC chip 30 interposed therebetween. On the main surface (back surface) 24 side opposite to the front surface 23 on which the antenna 40 of the power terminal portions 21 and 22 is provided, connection lead patterns 45 and 48 with a power source formed of copper foil or the like are provided on the IC chip 30. It extends to the vicinity. In the vicinity of the IC chip, the connection lead patterns 45 and 48 are connected to bondering areas 47 and 49 formed on the surface of the sheet 20 by contact holes 46, respectively. In these bonding areas 47 and 49, the IC chip 30 and the connection lead patterns 45 and 48 are connected by the gold wire 35.
The sheet 20 is a thin sheet having a thickness of about 10 μm formed of a material such as polyimide, has flexibility, and can be bent in the same manner as the IC chip 30 described above.

  Here, as described above, since the thickness of the sheet 20 is 10 μm and the thickness of the IC chip 30 is 30 μm to 60 μm, the RFID is arranged so that the side surface is in close contact with the side surface of a battery having a curved surface. -The TAG 10 can be attached. An embodiment in which the RFID 80 is attached to the battery 80 is shown in FIG.

Next, the configuration of the active RFID-TAG according to the present embodiment will be described with reference to the drawings.
FIG. 3 is a block diagram showing a basic configuration of the active RFID-TAG according to the present embodiment. In FIG. 3, the active RFID-TAG 1 includes an IC chip (integrated circuit) 30, an antenna 40, and a battery 80.

  The IC chip 30 includes a sensor 50 such as a temperature sensor, a humidity sensor, or a gas sensor as a functional circuit element, an I / O (input / output interface) 55 for a detection signal from the sensor 50, and a signal from the I / O 55. Are stored via the bus 56, a storage circuit 60 including a RAM (Random Access Memory), a ROM (Read Only Memory), etc., a CPU (Central Processing Unit) 65 for controlling the entire system, and a transmission for generating a reference clock A device 70 and a power supply control circuit 75 are incorporated.

  As described above, the antenna 40 is formed on the surface of the sheet 20, and the RFID 20 is formed from the sheet 20 and the IC chip 30 (see FIGS. 1 and 2) and is attached to the battery 80 as a power source to be active. RFID-TAG1 is configured. The I / O 55 has an interface function for inputting a detection signal from the sensor 50 and inputting / outputting the antenna 40 as a wireless communication unit.

Subsequently, the structure of the active RFID-TAG 1 according to the present embodiment will be described with reference to the drawings.
FIG. 4 is a perspective view of the active RFID-TAG 1. In the embodiments described below, a case where a cylindrical battery is employed as a representative power source will be described as an example. In FIG. 4, the RFID-TAG 10 is attached with an adhesive so as to be wound around the outer cylinder side surface 81 of the battery 80 as illustrated. The IC chip 30 and the antenna 40 are also curved along the exterior cylinder portion side surface 81. And the connection lead pattern 45 formed in the power supply terminal part 21 and the positive electrode terminal 82 of the battery 80 are bonded and connected with a conductive adhesive (not shown). In addition, when the RFID-TAG 10 is attached to the battery 80, a magnetic material may be provided between the RFID-TAG 10 and the battery 80. Thereby, the influence by which the metal which covers the side surface of a battery absorbs an electromagnetic wave can be suppressed.

Further, the connection lead pattern 48 formed on the power terminal portion 22 and the negative electrode terminal 83 of the battery 80 are bonded and connected with a conductive adhesive (not shown).
In this way, the battery 80 is connected to the connection lead pattern 45 and the connection lead pattern 48, and power is supplied to the IC chip 30. Since the RFID-TAG 10 is attached with an adhesive, it can be detached, that is, peeled off or reattached. In addition, as an adhesive, a double-sided adhesive tape etc. are employable.

  Therefore, according to the first embodiment described above, since the RFID-TAG 10 is attached along the exterior cylinder side surface 81 of the battery 80, the RFID-TAG 10 is not limited to the size of the battery. Since it has flexibility, the active RFID-TAG 1 that is not limited to the surface shape of the battery to be attached can be provided. Furthermore, since the battery 80 is provided, the output of electromagnetic waves (radio waves) can be increased and the amount of data of transmitted / received radio waves can be increased as compared with the type of RFID-TAG without a power source. The propagation distance can be increased.

  In addition, since the RFID-TAG 10 and the battery 80 are detachably attached, when the capacity of the battery 80 is reduced, the battery can be replaced and can be used for a long period of time. Furthermore, there is an effect that it can be used by changing the type of the battery, such as the capacity and rated voltage of the battery, if necessary.

In the present invention, since a power supply is provided, sufficient power can be supplied to a functional element with high power consumption, such as a sensor.
Furthermore, since functional elements other than the antenna 40 and the battery 80 are built in the IC chip 30, the configuration is simplified and the size can be reduced.

Furthermore, the antenna 40 and the connection lead patterns 45 and 48 are formed on the opposite surface with the sheet 20 interposed therebetween, and the antenna sensitivity due to the antenna 40 and the connection lead patterns 45 and 48 intersecting on the same plane. Can be reduced.
(Embodiment 2)

Subsequently, Embodiment 2 of the present invention will be described with reference to the drawings.
FIG. 5 is a plan view of the active RFID-TAG 1 according to the second embodiment viewed from above the positive electrode terminal 82 side. The second embodiment is characterized in that an insulating layer is provided on the side surface of the outer cylinder portion of the battery 80. There is a type of battery in which the outer cylinder part side surface 81 is formed of a metal can. In such a metal can, the connection lead patterns 45 and 48 must be insulated. In FIG. 5, an insulating layer 85 is provided on the surface of the outer cylinder side surface 81 of the battery 80. The insulating layer 85 may be a sheet made of an insulating material or may be coated with an insulating agent. An RFID-TAG 10 is attached to the surface of the insulating layer 85 to constitute an active RFID-TAG 1.

  It should be noted that the insulating layer can be omitted from the battery in which the outer cylinder portion side surface 81 is covered with the insulating sheet. Moreover, the insulating layer 85 can be omitted also when the adhesive for sticking the exterior cylinder part side surface 81 and the sheet 20 is made of an insulating material.

Therefore, according to the second embodiment described above, by providing the insulating layer 85, it is possible to prevent a short circuit between the outer cylindrical portion side surface 81 of the battery 80 and the connection lead patterns 45 and 48.
(Embodiment 3)

  Next, Embodiment 3 according to the present invention will be described with reference to FIG. The third embodiment is characterized in that a heat insulating layer is provided between the RFID-TAG 10 and the outer cylinder part side surface 81 of the battery 80. In FIG. 5, the insulating layer 85 is replaced with a heat insulating layer. When a temperature sensor is used as the sensor 50, the sheet 20 and the IC chip 30 are very thin as described above, and the heat of the sensor 50 propagates to the battery body via the exterior cylinder portion side surface 81. It is possible that detection is not possible. In order to solve this problem, a heat insulating layer is provided.

  The heat insulation layer is made of a heat insulating material such as phenolic foam or cellulosic foam in the form of a sheet and adhered to the side surface 81 of the outer cylinder, or ceramic beads or ceramic fibers are mixed with a synthetic resin having low thermal conductivity. It can be formed by applying a material or the like liquefied with a solvent to the side surface 81 of the outer tube portion.

As described above, by providing the heat insulating layer, the propagation of heat from the temperature sensor to the battery 80 can be reduced, so that the temperature can be accurately detected.
Note that the heat insulating layer may be provided on the front surface between the RFID-TAG and the battery, or may be provided in the range of the sensor that requires heat insulation.
(Embodiment 4)

Next, Embodiment 4 according to the present invention will be described with reference to the drawings.
FIG. 6 is a plan view of the structure of the active RFID-TAG according to the fourth embodiment viewed from the positive electrode terminal 82 side. In FIG. 6, the antenna 40 formed on the sheet 20 has a direction perpendicular to a straight line connecting the center of the radio wave directing direction and the center G of the battery 80 when the radio wave directing direction is the arrow direction in the figure (in the figure, BB). That is, the antenna is formed in a range that can be generally visually recognized from the directivity direction of the radio wave.

The battery 80 is often made of a material such as carbon or manganese that absorbs radio waves in its interior, in addition to the outer cylindrical portion being molded of a metal can, and the influence of the battery on the direction of radio waves is often used. When the antenna 40 is extended to a portion where the antenna becomes, it is conceivable that the antenna sensitivity is lowered. Therefore, the antenna sensitivity can be reduced by setting the antenna 40 within the range indicated by BB.
(Embodiment 5)

Next, a fifth embodiment according to the present invention will be described with reference to the drawings. The fifth embodiment is characterized in that a protective layer is provided on the active surface side surface of the RFID-TAG 10, and the other configuration is the same as that of the first embodiment (see FIG. 2). The same sign is given to the members.
FIG. 7 is a cross-sectional view illustrating the RFID-TAG 10 according to the fifth embodiment. In FIG. 7, a protective layer 91 that covers the surfaces of the IC chip 30, the antenna 40, and the gold wire 35 is provided on the active surface on which the IC chip 30 and the antenna 40 are provided. The protective layer 91 is made of a material having flexibility and insulation, and is formed by sticking a thin film sheet in a predetermined range or applying it in a liquid state like a molding material.

  In the protective layer 91, in the case where the sensor incorporated in the IC chip 30 is a humidity sensor or a gas sensor that detects the external environment, an opening 92 that opens a predetermined range that enables the sensor function is opened. It is preferable.

  Therefore, according to the fifth embodiment described above, by providing the protective layer 91, the IC chip 30, the antenna 40, and the gold wire 35 connecting them can be protected from moisture, dust, pressure, etc. from the outside. Reliability can be increased. In addition, since the protective layer 91 has flexibility, the characteristic that the RFID-TAG 10 which is the gist of the present invention by providing the protective layer 91 has flexibility is not lost.

Moreover, a humidity sensor, a gas sensor, or the like can be sensed by being directly exposed to a measurement environment. At this time, since a predetermined range of the sensor is opened and exposed, accurate sensing can be performed. Further, since the components other than the sensor are protected by the protective layer 91, high reliability can be maintained over a long period of time.
(Embodiment 6)

Subsequently, Embodiment 6 according to the present invention will be described with reference to the drawings.
8A is a front view showing the active RFID-TAG 1 according to the sixth embodiment, and FIG. 8B is a perspective view of the RFID-TAG connecting member 100 employed in the sixth embodiment. ing. In FIG. 8A, the RFID-TAG 10 is attached to the side surface of the battery 80 with an adhesive, and the positive terminal 82 and the negative terminal 83 are connected to the power terminal portions 21 and 22, respectively.

  At this time, the power terminals 21 and 22 are pressed and connected to the positive terminal 82 and the negative terminal 83 by the substantially U-shaped RFID-TAG connecting member 100. The RFID-TAG connecting member 100 can be mounted from the direction of arrow D (IC chip 30 direction) or the direction of arrow C in the figure.

  The RFID-TAG connection member 100 will be described in more detail. In FIG. 8B, the RFID-TAG connecting member 100 is a substantially U-shaped member having elasticity, and elastic portions 102 and 104 that are thinner than the connecting portion 101 protrude from both ends of the connecting portion 101. Has been. The elastic portions 102 and 104 are formed with trapezoidal pressing portions 103 and 105 in the battery direction. The distance between the pressing portion 103 and the pressing portion 105 is smaller than the outer end distance between the positive electrode terminal 82 and the negative electrode terminal 83 of the battery 80. When the battery 80 is attached to the battery 80, the distance is widened in the direction of arrow E in FIG. Thereafter, the power terminal portions 21 and 22 are pressed in the direction of arrow F by the elastic force of the elastic portions 102 and 104 (see FIG. 8A). Since power supply lead patterns 45 and 48 are formed on the power supply terminal portions 21 and 22 (see FIG. 1), the battery 80 and the IC chip 30 are connected.

  Slopes 106 and 107 are formed in the pressing portions 103 and 105, respectively, so that the RFID-TAG connecting member 100 can be easily attached. When removing the RFID-TAG connecting member 100 from the battery 80, it can be easily removed by pulling the connecting portion 101.

A recess 108 is formed at a substantially central portion in the cross-sectional direction of the connecting portion 101. The recess 108 is set to a size that prevents the IC chip 30 from hitting the connecting portion 101 when the RFID-TAG connecting member 100 is attached to the battery 80 from the direction of arrow D (see FIG. 8A). .
The material of the RFID-TAG connecting member 100 is not particularly limited as long as it has elasticity, but when it is mounted from the direction of arrow D shown in FIG. It is preferable to mold with a synthetic resin that is not given.

  Therefore, according to Embodiment 6 described above, the positive electrode terminal 82 and the negative electrode terminal 83 of the battery 80 and the power supply lead patterns 45 and 48 formed on the sheet 20 are formed by the elastic portions 102 and 104 of the RFID-TAG connection member 100. Since it is press-connected, it can be reliably connected to the battery 80 and can be easily attached to and detached from the battery 80.

As in the first embodiment described above, if a conductive adhesive is provided between the positive electrode terminal 82 and the negative electrode terminal 83 and the power supply terminal portions 21 and 22 and the RFID-TAG connecting member 100 is further employed, Connection with RFID-TAG10 can be performed more reliably.
(Embodiment 7)

Next, a seventh embodiment according to the present invention will be described with reference to the drawings.
FIG. 9A shows a front view of the active RFID-TAG 1 according to the seventh embodiment, and FIG. 9B shows a cross-sectional view taken along line HH in FIG. 9A. Yes. 9A and 9B, the RFID-TAG 10 is wound around the side surface of the battery 80. In this state, the RFID-TAG holding member 110 is attached.

  The RFID-TAG holding member 110 is made of a synthetic resin having elasticity, and includes holding parts 115 and 116 that press the RFID-TAG 10 against the side surface of the battery 80, and elastic parts 111 and 113 that press the positive terminal 82 and the negative terminal 83. Is formed. In the elastic portions 111 and 113, press portions 112 and 114 are formed in the same manner as the elastic portion described in the sixth embodiment (see FIG. 8B). The vicinity of the IC chip 30 is opened.

  Further, the RFID-TAG holding member 110 will be described in detail with reference to FIG. The elastic portions 115 and 116 attach the RFID-TAG 10 to the battery 80 by pressing the RFID-TAG 10 on a straight line BB passing through the center G of the battery 80 in the drawing. In addition, slopes 117 are provided on the inner ends of the tip portions of the elastic portions 115 and 116, respectively, so that the slopes 117 can be easily attached when the RFID-TAG 10 is attached from the direction of the arrow L in the figure. .

  The RFID-TAG holding member 110 is attached after the RFID-TAG 10 is held at a predetermined position of the battery 80 and then the RFID-TAG holding member 110 is inserted from the direction of the arrow L. At this time, since the distance of the elastic portions 115 and 116 connected by BB is set to be smaller than the outer diameter of the battery 80, the elastic portions 115 and 116 are inserted while being opened in the arrow J direction, and the arrow K The RFID-TAG 10 is pressed and held on the battery 80 by the elastic force in the direction.

  The elastic parts 111 and 113 press-connect the power supply terminal parts 21 and 22 to the positive terminal 82 and the negative terminal 83, respectively, as in the sixth embodiment (FIG. 8A).

  The distal end portions 118 and 119 of the elastic portions 115 and 116 of the RFID-TAG holding member 110 are extended to the outside of the outer shape of the battery 80, and various active RFID-TAG1 such as an electronic device and an article conveying device can be used. It is set so as to abut on the active RFID-TAG mounting part 130 to be installed. For example, if the active RFID-TAG mounting portion 130 is a table, the active RFID-TAG 1 can be held in a stable posture by the tip portions 118 and 119.

  Therefore, according to the seventh embodiment described above, the RFID-TAG 10 is pressed and held on the side surface of the battery 80 by the RFID-TAG holding member 110, and the RFID-TAG 10 is pressed and connected to the positive terminal 82 and the negative terminal 83 of the battery 80. -The TAG 10 can be easily mounted on the battery 80, and can be easily attached and detached. In addition, by mounting the RFID-TAG holding member 110, for example, when the power source is a cylindrical dry battery, there is an effect that a certain posture can be held.

Further, in FIG. 9B, hooks 121 and 122 as shown by two-dot chain lines in the figure are provided at the distal ends of the elastic parts 115 and 116 of the RFID-TAG holding member 110, and screw holes are opened. In this case, the active RFID-TAG mounting unit 130 can be screwed and fixed with a fixing screw (not shown).
In this way, the active RFID-TAG 1 of the present invention can be mounted in a desired posture, and can be mounted even in an environment where there is movement or vibration, and a function as an active RFID-TAG can be provided. .

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the above-described embodiment, the sensor 50 is built in the IC chip 30, but the sensor can be provided on the sheet 20 alone. Such a structure will be described below as a modified example.
(Modification)

  FIG. 10 is a plan view showing a modification of the present invention. The modification is characterized in that the sensor 51 is configured separately from the IC chip 30, and only different parts will be described. In FIG. 10, the sensor 51 is provided on the sheet 20 near the IC chip 30. The sensor 51 is also formed with substantially the same thickness as the IC chip 30. A lead pattern 57 is formed between the IC chip 30 and the sensor 51, and the sensor 51 and the lead pattern 57, and the lead pattern 57 and the IC chip are connected by a gold wire 35.

With such a configuration, there is provided an active RFID-TAG that achieves the object of the present invention even if the sensor 51 is so large that it cannot be built in the IC chip 30 or manufactured by a manufacturing process different from the IC chip. can do.
In the case where the sensor 51 is exposed to the outside air, only the sensor 51 can be opened, and the other portions can be protected by a protective layer.
Furthermore, not only one sensor but also a plurality of sensors can be provided in the structure of the above-described embodiment.

  In addition to the primary battery, a secondary battery can also be used as the power source. In this case, since the RFID-TAG is detachable, the secondary battery can be detached and charged. By forming a charging control circuit on the chip and a charging terminal on the sheet, the battery can be charged without being removed from the RFID-TAG.

In the above-described embodiment, the cylindrical battery is exemplified as the power source. However, the battery can be applied to a battery having a quadrangular prism shape, a card shape, or a special shape having a curved surface.
Further, in the above-described embodiment, the battery in which the positive electrode terminal and the negative electrode terminal are opposed to each other is illustrated. However, even in the case of a battery having the positive electrode terminal and the negative electrode terminal arranged in the same position, the shape of the sheet, RFID A similar effect can be obtained by appropriately setting the shapes of the TAG connection member, the RFID-TAG holding member, and the like.

  Therefore, according to the above-described first to seventh embodiments, the degree of freedom in selecting the type of power source is increased, the power source can be replaced freely, it can be used for a long period of time, and the electromagnetic wave transmission output is increased. It is possible to provide a small-sized active RFID-TAG that can be used.

The top view which shows RFID-TAG which concerns on Embodiment 1 of this invention. FIG. 3 is a cross-sectional view of a main part showing an AA cross section of the RFID-TAG according to the first embodiment of the invention. 1 is a block diagram showing a basic configuration of an active RFID-TAG according to Embodiment 1 of the present invention. The perspective view which shows active RFID-TAG which concerns on Embodiment 1 of this invention. The top view which visually recognized active RFID-TAG which concerns on Embodiment 2, 3 of this invention from the positive electrode terminal side upper direction. The top view which visually recognized active RFID-TAG which concerns on Embodiment 4 of this invention from the positive electrode terminal upper direction. Sectional drawing which shows RFID-TAG which concerns on Embodiment 5 of this invention. (A) is a front view which shows active RFID-TAG which concerns on Embodiment 6 of this invention, (b) is a perspective view which shows the RFID-TAG connection member concerning Embodiment 6. FIG. (A) is a front view which shows active RFID-TAG which concerns on Embodiment 7 of this invention. (B) is sectional drawing which shows the HH cross section of Fig.9 (a). The top view which shows RFID-TAG which concerns on the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Active RFID-TAG, 10 ... RFID-TAG, 20 ... Sheet | seat, 30 ... IC chip (integrated circuit), 40 ... Antenna, 80 ... Battery (power supply).

Claims (14)

A flexible RFID-TAG including a sheet on which a power supply connection portion is formed, and an integrated circuit and an antenna on a main surface of the sheet;
A power supply for supplying power to the integrated circuit,
An active RFID-TAG, wherein an RFID-TAG is mounted along the surface of the power source. The active RFID-TAG according to claim 1,
The power source is a battery having a cylindrical shape, a quadrangular prism shape, or a curved surface on its side surface,
The active RFID-TAG, wherein the RFID-TAG is mounted along a side surface of the battery. In the active RFID-TAG according to claim 1 or 2,
An active RFID-TAG, wherein the RFID-TAG and the power source are detachably mounted. In the active RFID-TAG according to any one of claims 1 to 3,
An active RFID-TAG, wherein the power source and the RFID-TAG are attached with a removable adhesive. In the active RFID-TAG according to any one of claims 1 to 4,
An active RFID-TAG, wherein a positive electrode terminal and a negative electrode terminal provided in the power supply and the power supply connection portion are attached with a removable conductive adhesive. In the active RFID-TAG according to any one of claims 1 to 5,
The active RFID-TAG, wherein the integrated circuit includes at least wireless communication means, a CPU that controls the integrated circuit, a storage circuit, and a sensor. In the active RFID-TAG according to any one of claims 1 to 6,
A connection lead pattern connected to the power supply formed in the power supply connection portion is formed on the main surface opposite to the antenna of the sheet, and the integration is performed on the same main surface as the antenna via a contact hole. An active RFID-TAG that is connected to a circuit. In the active RFID-TAG according to any one of claims 1 to 7,
An active RFID-TAG, wherein a flexible protective layer is provided on a surface of the integrated circuit of the RFID-TAG and the antenna. The active RFID-TAG according to claim 8,
The active RFID-TAG is characterized in that an opening for exposing a predetermined range of a sensor built in the integrated circuit is formed in the protective layer. In the active RFID-TAG according to any one of claims 1 to 9,
An active RFID-TAG comprising an insulating layer between the power source and the RFID-TAG. In the active RFID-TAG according to any one of claims 1 to 9,
An active RFID-TAG comprising a heat insulating layer between a surface of the power source and the RFID-TAG. In the active RFID-TAG according to any one of claims 1 to 11,
An active RFID-TAG characterized in that the antenna extends in a range that is generally visible from the center line in the direction of radio wave. In the active RFID-TAG according to any one of claims 1 to 3,
An active RFID-TAG, further comprising: an RFID-TAG connection member having an elastic part that presses and connects the power supply connection part to each of a positive electrode terminal and a negative electrode terminal of the power supply. In the active RFID-TAG according to any one of claims 1 to 3,
An RFID-TAG holding member further comprising: an elastic part that presses the RFID-TAG on a side surface of the power supply; and an elastic part that presses and connects the power supply connection part to each of a positive electrode terminal and a negative electrode terminal of the power supply. ,
An active RFID-TAG, wherein the RFID-TAG is detachably attached to the power source.

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