JP5163506B2 - Animal ear tag RFID tag - Google Patents

Description

  The present invention receives a command signal transmitted from a radio frequency identification (hereinafter referred to as RFID) reader / writer and updates / writes tag information stored in a memory in accordance with the information of the command signal, or the tag The present invention relates to an RFID tag used in a radio frequency RFID system using a UHF band, a microwave band, or the like that transmits information as a read signal to an RFID reader / writer. In particular, an RFID tag is provided on the animal ear tag, and is fixed to the ears of animals such as cattle, pigs, sheep and other livestock and horses (hereinafter referred to as animals to be managed), The present invention relates to an animal ear tag RFID tag for performing individual management.

  The RFID system is a system that performs wireless communication between an RFID tag including an IC chip and an RFID reader / writer. There are two types of RFID tags: an active tag that is mounted with a battery and is driven by its power, and a passive tag that is driven by receiving power from the RFID reader / writer and using it as a power source. Since the active type has a battery compared to the passive type, there are advantages such as communication distance and communication stability, but there are also disadvantages such as complicated structure, larger size, and higher cost. In addition, with recent improvements in semiconductor technology, IC tags for passive tags have become smaller and higher performance, and the use of passive tags in a wide range of fields is expected. In the passive tag, in the electromagnetic induction method (HF band is typical) applied to the RFID tag having a long wave band and a short wave band, the transmission antenna coil of the RFID reader / writer and the antenna coil of the RFID tag are used. A voltage is induced in the RFID tag by the electromagnetic induction action, and the IC chip is activated by this voltage to enable communication. Therefore, the RFID tag operates only within the induction electromagnetic field by the RFID reader / writer, and the communication distance becomes about several tens of centimeters.

  In addition, in radio frequency RFID tags such as UHF band and microwave band, the radio wave system is applied, and power is supplied to the IC chip of the RFID tag by radio waves, so the communication distance is about 1 to 7 m. It has improved significantly. Therefore, simultaneous reading of a plurality of RFID tags, reading of a moving RFID tag, and the like, which have been difficult to realize with a long wave band and a short wave band RFID system with a short communication distance, are possible. Therefore, the range of use is greatly expanded, and application to an animal ear tag RFID tag is considered to be one of the useful utilization methods.

  Conventionally, an animal ear tag has a male shaft portion that penetrates the ear of an animal and a female shaft portion to which the male shaft portion is fitted, and a bill portion on either the male shaft portion or the female shaft portion. Or a male shaft portion and a female shaft portion are formed with a bill portion (see, for example, Patent Documents 1 to 10). An RFID tag is provided on such a bill portion, and is attached to the ear of an animal to be managed. There is one that is worn and manages an individual of an animal with an ear tag (for example, see Patent Documents 11 to 13). Note that examples of the RFID tag alone include those described in Patent Documents 14 to 17 and the like.

Japanese Patent Laid-Open No. 2008-5820 (FIG. 18) Japanese Patent Laid-Open No. 2007-143459 (FIGS. 10 to 12) Japanese Patent Laying-Open No. 2005-333924 (FIG. 3) Japanese Patent Laying-Open No. 2005-224214 (FIG. 16) Japanese Patent Laying-Open No. 2005-58052 (FIGS. 8 and 9) JP 2004-344085 A (FIGS. 1 and 4) Japanese Patent Laying-Open No. 2003-70372 (FIG. 1) Japanese Unexamined Patent Publication No. 2000-209975 (FIG. 3) JP-A-8-322415 (FIG. 2) JP-A-6-327370 (FIG. 3) JP 2003-333950 A (FIG. 8) Japanese Patent Laid-Open No. 11-276008 (FIG. 5) Japanese Patent Laying-Open No. 2003-189751 (FIG. 3) Japanese Patent Laying-Open No. 2006-91964 (FIG. 1) JP 2008-283404 A (FIGS. 5 and 6) JP 2006-330961 A (FIG. 4) Japanese Patent Laid-Open No. 2007-221528 (FIG. 16)

  In Patent Document 11 and Patent Document 12, an RFID tag is attached to an animal to be managed so that the RFID tag (RFID tag antenna) faces the RFID reader / writer antenna side. Specifically, in Patent Document 11, a tag is attached to the ear of an animal to be managed, and the RFID reader / writer antenna side is arranged in front of the animal to be managed. In Patent Document 12, a tag is attached to the foot of an animal to be managed, and the RFID reader / writer antenna side is disposed below the animal to be managed.

  When entering / exiting management or feeding of a management target animal or feeding, it is necessary to identify the individual number from the front side of the management target animal. As in Patent Document 11, the animal ear tag RFID tag is managed. If attached to the ear of the target animal, the individual number can be read and identified by the RFID reader / writer. However, when examining the components and estrus of milk, the worker is located behind the ear of the animal or under the ear of the object, and the individual number of the animal to be managed by the handy type reader / writer operated by the worker However, since the animal ear tag RFID tag is attached to the ear of the animal to be managed, the ears of the animal to be managed and the living body of the face influence the communication distance of the RFID tag. There was a problem that would decrease. In particular, the radio frequency RFID tag has a problem that the communication distance of the RFID tag is extremely reduced because an animal, that is, a living body contains moisture. Even if a dipole antenna having a radiation pattern before and after it is used as an antenna element of an RFID tag, the influence of living organisms on the ears and face of the animal to be managed cannot be ignored.

  On the other hand, if the RFID tag is attached to the foot of the animal to be managed as in Patent Document 12, when examining the components and estrus of milk, work on the back side of the animal's ear or under the ear of the object. Even if it is necessary to identify the individual number of the animal to be managed by a handy type reader / writer operated by the operator, it is easy to identify the individual number of the animal to be managed, Contrary to the problem of Patent Document 11, there is a problem that the reliability is low for identifying the individual number from the front side of the animal to be managed. On the other hand, in Patent Document 13, there is a disclosure that a plurality of tags are attached to the ears or feet of domestic animals for animals to be managed. Attaching the RFID tag has a problem of increasing stress and attaching work to an animal to be managed. In order to solve such a problem, first, it has a male shaft portion that penetrates the animal's ear and a female shaft portion to which the male shaft portion is fitted, and either the male shaft portion or the female shaft portion. On the other hand, it is considered effective to attach two RFID tags (IC chips) to an animal ear tag on which a tag portion provided with an RFID tag is formed. Therefore, the application of a conventional RFID tag to an animal ear tag RFID tag is examined.

  The RFID tag described in Patent Document 14 is a laminate of electromagnetic induction types, and it is necessary to form a layer for avoiding mutual interference between antennas. Another problem is that the communication distance is short because of the RFID tag. The RFID tag described in Patent Document 15 is a radio wave type RFID tag, and generally has a longer communication distance than an electromagnetic induction type RFID tag. However, the reason why the dipole antennas are crossed together is circularly polarized. This is to generate a wave, and does not solve the above problem. Although the RFID tag described in Patent Document 16 uses a plurality of IC chips, there is a problem that the ear tag becomes large because of the antenna pattern on the same plane. The RFID tag described in Patent Document 16 is a technique for folding down an antenna pattern between a plane on which an IC chip is provided and another plane to reduce the size, and does not solve the fundamental problem.

  In addition, if a dipole antenna is used as an antenna for an animal ear tag RFID tag, there are two dipole antennas close to each other, so the RFID tag is designed under the condition that no other RFID tag exists in free space. As a result, the antennas of the two RFID tags are coupled to each other, and the impedance between the RFID tag's dipole antenna and the IC chip (matching circuit or matching line) is mismatched.

  Therefore, an animal ear tag having a male shaft portion that penetrates the animal's ear and a female shaft portion to which the male shaft portion is fitted, and a bill portion is formed on both the male shaft portion and the female shaft portion. However, it is also possible to provide RFID tags on both bill sections. However, even if a dipole antenna is used as the antenna of the animal ear tag RFID tag, there may be a case where the distance between the dipole antennas is not sufficient, and as in the case where two RFID tags are provided on the one bill portion described above. The RFID tag is designed under the condition that no other RFID tag exists in free space, so that the two RFID tags are coupled to each other, and the dipole antenna of the RFID tag and the IC chip (matching circuit) (Or a matching line) may cause mismatch.

  The present invention has been made to solve the above-described problems. Even if two RFID tags having dipole antennas are used as antenna elements, the influence of living organisms such as ears and faces of animals to be managed and An object is to provide an animal ear tag RFID tag with reduced interference.

The animal ear tag RFID tag according to the invention of claim 1 includes a first tag portion having a first hole portion, a second tag portion having a second hole portion, and the first tag portion. A first dipole antenna, which is provided and electrically connected to the first IC chip via a first matching line, and the second power supply unit is opposed to the first power supply unit. A second dipole antenna provided on the second bill portion and having a second IC chip electrically connected to the second power feeding portion via a second matching line; and A locking means capable of locking the hole and the second hole and penetrating the animal's ear; and a direction from the first hole toward the first power feeding portion and the The first angle formed by the inclination of the first dipole antenna, the direction from the second hole portion toward the second power feeding portion, and the second die It is characterized in that the second angle between the inclination of Ruantena are different angles.

The animal ear tag RFID tag according to the invention of claim 2 is formed on the male shaft portion capable of penetrating the animal ear, the female shaft portion into which the male shaft portion is fitted, and the female shaft portion. In the animal ear tag RFID tag comprising the first tag portion formed and the second tag portion formed on the male shaft portion, the first tag portion is provided on the first tag portion, A first dipole antenna having a first IC chip electrically connected via a first matching line, and a second power feeding part opposite to the first power feeding part, And a second dipole antenna having a second IC chip electrically connected to the second feeding portion via a second matching line, and the male shaft portion and the female shaft portion are fitted to each other. A first angle formed by a direction from a combined axis toward the first power feeding unit and an inclination of the first dipole antenna, and the male The second angle formed by the direction from the shaft formed by fitting the portion and the female shaft portion toward the second power feeding portion and the inclination of the second dipole antenna is different. Is.

The animal ear tag RFID tag according to the invention of claim 3 is characterized in that the first dipole antenna is provided in any one of the inside of the first tag part, one principal surface, and the other principal surface, The dipole antenna according to claim 1 or 2 is provided in any one of the inside, the one principal surface, and the other principal surface of the second bill portion.

The animal ear tag RFID tag according to a fourth aspect of the present invention is the device according to any one of the first to third aspects, further comprising fixing means for fixing the first tag portion and the second tag portion. .

Animal ear tag RFID tag according to the invention of claim 5, at least the first angle or according to any one of claims 1 to 4 either is a 45 ° or 135 ° of the second angle Is.

Animal ear tag RFID tag according to the invention of claim 6, in any one of claims 1 to 5 is at least the first dipole antenna or one of the antenna elements of said second dipole antenna meander As described.

The animal ear tag RFID tag according to the invention of claim 7 is the one according to any one of claims 1 to 6 , wherein the antenna element shapes of the first dipole antenna and the second dipole antenna are the same. is there.

The animal ear tag RFID tag according to the invention of claim 8 is the one according to any one of claims 1 to 7 , wherein an absolute value of a difference between the first angle and the second angle is 90 °. is there.

Animal ear tag RFID tag according to the invention of claim 9, said first IC chip and said second IC chip, according to any one of claims 1 to 8 individual number of the same individual are stored belongs to.

In the animal ear tag RFID tag according to the invention of claim 10 , the first IC chip and the second IC chip individually record / add / delete information other than the individual number of the same individual. Claim 9 is possible.

  As described above, according to the present invention, there is an RFID reader / writer antenna in any direction between the front side and the rear side of an animal to be managed while suppressing interference between dipole antennas that are antenna elements of adjacent RFID tags. However, an animal ear tag RFID tag capable of good communication can be obtained.

It is a block diagram of the 1st tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is a block diagram of the 2nd tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is a mounting | wearing schematic diagram of the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is a block diagram of the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is a block diagram of the 1st tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is a block diagram of the 2nd tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is a block diagram of the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is an IC chip enlarged view of the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is a dipole antenna block diagram used for the animal ear tag RFID tag which concerns on Embodiment 1 of this invention. It is an execution schematic diagram of the individual identification of the animal of the management object by the animal ear tag RFID tag which concerns on Embodiment 1 of this invention, and individual management. It is a block diagram of the 1st tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a block diagram of the 2nd tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a mounting | wearing schematic diagram of the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a block diagram of the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a block diagram of the 1st tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a block diagram of the 2nd tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a block diagram of the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a block diagram of the 1st tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a block diagram of the 2nd tag part which comprises the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is a block diagram of the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is the animal figure of the management object which mounted | wore with the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is the animal figure of the management object which mounted | wore with the animal ear tag RFID tag which concerns on Embodiment 2 of this invention. It is an execution schematic diagram of the individual identification of the animal of the management by the animal ear tag RFID tag which concerns on Embodiment 2 of this invention, and individual management. It is the animal figure of the management object with which the animal ear tag RFID tag which concerns on Embodiment 3 of this invention was mounted | worn. It is a block diagram of the animal ear tag RFID tag which concerns on Embodiment 3 of this invention.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to FIGS. FIG. 1A is a front view of a first tag part constituting an animal ear tag RFID tag (a surface facing the ear of an animal to be managed), and FIG. 1B is a first view related to FIG. 1 is a side view (dipole antenna and IC chip are not shown), and FIG. 1 (c) is a side view of the first tag portion according to FIG. 1 (a) (in the direction of the arrow in FIG. 1 (a)). FIG. 1 (d) is a schematic diagram showing the inclination of the dipole antenna in the first bill portion according to FIG. 1 (a), and FIG. 2 (a) is a schematic diagram showing the animal ear tag RFID tag. FIG. 2B is a side view of the first bill portion according to FIG. 2A, and FIG. 3A is an animal view. FIG. 3B is a schematic diagram after the mounting of the animal ear tag RFID tag, and FIG. 4 is a configuration of the animal ear tag RFID tag according to the first embodiment. In FIG. 3 and FIG. 4 (FIG. 7 to be described later), the first bill portion is attached to the front side and the second bill portion is attached to the rear side so as to sandwich the ear of the animal to be managed. Yes. However, FIG. 3A is a view before the first bill portion and the second bill portion are attached.

  FIG. 5 (a) is a front view of the first tag part constituting the animal ear tag RFID tag (a surface facing the ear of the animal to be managed), and FIG. 5 (b) is a diagram related to FIG. 5 (a). FIG. 5C is a side view of the first bill portion according to FIG. 5A (direction of arrow in FIG. 1A). FIG. 5 (d) is a schematic diagram showing the inclination of the dipole antenna in the first tag portion according to FIG. 5 (a), and FIG. 6 (a) is a diagram showing the animal ear tag RFID tag. FIG. 6B is a side view of the first bill portion according to FIG. 6A, and FIG. 7 is the first embodiment. FIG. 8A to FIG. 8C are enlarged views of an IC chip of an animal ear tag RFID tag, and FIG. 9A is used for an animal ear tag RFID tag. FIG. 9B is a diagram showing the configuration of a dipole antenna using a meander line used for an animal ear tag RFID tag, and FIG. 10A is an individual identification of an animal to be managed by the animal ear tag RFID tag. FIG. 10B is a configuration diagram of an IC chip used for an animal ear tag RFID tag.

  1 to 10, reference numeral 1 denotes a first tag part constituting an animal ear tag RFID tag, and the first tag part 1 has a thin upper portion. Reference numeral 3 denotes a second tag part that constitutes the animal ear tag RFID tag, and the upper part is thin like the first tag part 1. 3 is a male shaft portion that can penetrate the ear of an animal formed in the upper portion of the second bill portion 2, 4 is formed in the upper portion of the first bill portion 1, and the male shaft portion 3 is fitted into the male shaft portion. Female shaft portion 5 is a first dipole antenna, and 6 is a first IC connected to a first feeding portion which is a feeding portion of the first dipole antenna 5 via a matching line (matching circuit). The chip 7 seals the RFID tag composed of the first dipole antenna 5 and the first IC chip 6, and protects the first dipole antenna 5 and the first IC chip 6 (improves water resistance). ) Is a first resin case formed of a resin such as polyvinyl chloride (PVC). For convenience, an RFID tag including the first dipole antenna 5 and the first IC chip 6 is referred to as a first RFID tag 5a. In the drawings, the same reference numerals denote the same or corresponding parts, and detailed descriptions thereof are omitted.

  Subsequently, in FIGS. 1 to 10, 8 is connected to the second dipole antenna, and 9 is connected to the second power feeding unit which is the power feeding unit of the second dipole antenna 8 via the matching line (matching circuit). The second IC chip 10 seals the RFID tag including the second dipole antenna 8 and the second IC chip 9 to protect the second dipole antenna 8 and the second IC chip 9 (water resistance A second resin case formed of a resin such as polyvinyl chloride (PVC) for improving the property, 11 is an ear of an animal to be managed, 12 is an ear tag for an animal, and an ear 11 13 is connected to the first IC chip 6 and the first dipole antenna 5, and the impedance between the first IC chip 6 and the first dipole antenna 5 is set. Matching line to take dance matching, 14 is a short circuit for short-circuiting the first dipole antenna 5 together, 15 is a first dipole antenna configured by a meander line. For convenience, an RFID tag including the second dipole antenna 8 and the second IC chip 9 is referred to as a second RFID tag 8a. In the drawings, the same reference numerals denote the same or corresponding parts, and detailed descriptions thereof are omitted.

  Further, in FIG. 10B, reference numeral 17 denotes an analog unit for transmitting a transmission wave from the RFID reader / writer 15 received by the first dipole antenna 5 or the second dipole antenna 8 which is an antenna unit to a subsequent digital circuit, 18 Is an A / D converter for A / D converting the transmission wave, and 19 is a power supply control for smoothing the transmission wave received by the antenna unit 8 with a rectifier circuit and supplying power to each circuit of the RFID tag that generates power and controlling the power supply. , 20 is a memory unit in which individual identification information such as an individual number is stored as tag information, 21 is a demodulator that demodulates the transmission wave, and 22 is an IC chip including the memory unit 20 by the transmission wave demodulated by the demodulation unit 21 A control unit 23 that controls the circuits in the first IC chip 6 or the second IC chip 9, and 23 modulates information extracted from the memory unit 20 by the control unit 22. A modulation unit, 24 is a digital unit composed of a demodulation unit 21, a control unit 22, and a modulation unit 23, and 25 is a D / A conversion unit that D / A converts a signal coming from the modulation unit and sends it to the analog unit 17. . In the drawings, the same reference numerals denote the same or corresponding parts, and detailed descriptions thereof are omitted.

  By fitting the first tag part 1 shown in FIG. 1 and the second tag part 2 shown in FIG. 2, the animal ear tag RFID tag according to the first embodiment is configured. First, the first bill unit 1 will be described. As shown in FIGS. 1 (a) and 1 (c), the first RFID protected by the first resin case 7 on one main surface of the first tag 1 (the surface facing the ear of the animal to be managed). A tag 5a is pasted. Further, a second RFID tag 8a protected by the second resin case 10 is attached. The positional relationship between the first RFID tag 5a and the second RFID tag 8a is such that the first power feeding unit in which the first IC chip 6 and the matching line are arranged, the second IC chip 9 and the matching line are arranged. The second power feeding unit arranged is opposed to the second power feeding unit. It can be said that the first IC chip 6 is electrically connected to the first power feeding unit via the first matching line in the first dipole antenna 5. Similarly, the second dipole antenna 8 can be said to have the second IC chip 9 electrically connected to the second feeding portion via the second matching line. 1A, the second IC chip 9 is disposed behind the first IC chip 6 and cannot be seen on the drawing.

  Next, the second bill part 2 will be described. As shown in FIG. 2A, the RFID tag is not attached to one main surface of the second bill portion 2 (the surface facing the ear of the animal to be managed). Since the second tag portion 2 is not provided with an RFID tag, the second tag portion 2 may be configured to have only the function of the male shaft portion 3. In this case, the relationship is not the relationship between the first bill portion 1 and the second bill portion 2, but the relationship between the bill portion 1 and the male shaft portion 3. In this case, since the male shaft portion 3 does not have the second bill portion 2, it is necessary to have a shape that the male shaft portion 3 alone does not fall off the ear 11 of the animal to be managed. Further, a male shaft portion 3 is formed on the first bill portion 1 and a female shaft portion 4 is formed on the second bill portion 2 so that the first bill portion 1 and the second bill portion 2 are fitted. Alternatively, the second bill portion 2 may be configured to have only the function of the female shaft portion 4. In this case, the relationship is not the relationship between the first bill portion 1 and the second bill portion 2, but the relationship between the bill portion 1 and the female shaft portion 4. Since the female shaft part 4 in this case does not have the second tag part 2, it is necessary that the female shaft part 4 has a shape that does not fall off the ear 11 of the animal to be managed by the female shaft part 4 alone.

  The first RFID tag 5a and the second RFID tag 8a are formed on the other main surface, which is the surface opposite to the one main surface of the first tag unit 1, or inside the first tag unit 1. May be. In the case where the first RFID tag 5a and the second RFID tag 8a are formed inside the first tag part 1, the first tag part 1 is connected to the first RFID tag 5a and the second RFID tag 8a. Since it can be a protective layer, the first resin case 7 and the second resin case 10 need not be provided. Further, the first RFID tag 5a and the second RFID 8a may be separately formed on the inside of the first tag part 1, one main surface, or another main surface. For example, the first RFID tag 5a may be formed with the first tag portion 1 on one main surface, and the second RFID tag 8a may be formed with the first tag portion 1 on another main surface.

  As shown in FIG. 3 (a), the ear 11 is disposed between the first bill portion 1 and the second bill portion 2, and the male shaft portion 3 is inserted into the female shaft portion 4 to be fitted to each other. This completes the mounting of the animal ear tag RFID tag according to Embodiment 1 to the ear 11. FIG. 3B and FIG. 4 are drawings after the mounting. FIG. 4 is a view showing a state in which the second bill portion 2 is fitted to FIG. The fitting between the female shaft portion 4 and the male shaft portion 3 can be easily performed by using an ear tag mounting device. Further, the first bill portion 1 and the second bill portion 2 may be attached to the ear 11 in the reverse direction. Further, a male shaft portion 3 is formed on the first bill portion 1 and a female shaft portion 4 is formed on the second bill portion 2 so that the first bill portion 1 and the second bill portion 2 are fitted. May be. The female shaft portion 4 is shaped so as to cover most of the male shaft portion 3, but the female shaft portion 4 has only a sharpened portion formed at the tip of the male shaft portion 3 or the periphery of the sharpened portion. The fitting shape, that is, a shape that covers most of the male shaft portion 3 may not be used.

  As shown in FIGS. 3B and 4, the male shaft portion 3 can penetrate the ear 11, and the female shaft portion 4 is fitted with the male shaft portion 3. Depending on the shape of the male shaft portion 3 and the female shaft portion 4, only the female shaft portion 4 may penetrate the ear 11. Specifically, “the male shaft portion 3 is formed only by the sharpened portion formed at the tip of the male shaft portion 3” or “the sharpened portion where the main portion of the male shaft portion 3 is formed at the tip of the shaft portion 3. The case of “part” can be considered. Even in such a case, for the sake of convenience, if the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 passes through the ear 11, the state also indicates that “the male shaft portion 3 passes through the ear 11. Or “male shaft portion 3 can penetrate ear 11”.

  A straight line A shown in FIG. 1 (d) indicates a direction from the axis formed by fitting the male shaft portion 3 and the female shaft portion 4 toward the center of the first power feeding portion and the second power feeding portion in plan view. Show. A straight line B indicates the inclination of the first dipole antenna 5 in plan view. A straight line C indicates the inclination of the second dipole antenna 5 in a plan view and overlaps the straight line A. Here, the angle formed by the straight line A and the straight line B, that is, the direction from the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 to the first power feeding portion, and the inclination of the first dipole antenna 5 The first angle formed by is 90 °. Further, the angle formed by the straight line A and the straight line C, that is, the direction from the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 to the second power feeding portion, and the inclination of the second dipole antenna 8 is obtained. The second angle formed is 0 ° because the straight line A and the straight line C overlap. Therefore, the absolute value of the difference between the first angle and the second angle is 90 °. This is because the first power feeding unit (first IC chip 6 and matching line) and the second power feeding unit (second IC chip 9 and matching line) are opposed to each other in the plan view of FIG. This means that the first dipole antenna 5 and the second dipole antenna 8 intersect at an angle of 90 °.

  The dimensions of the first dipole antenna 5 are such that a desired antenna gain can be obtained, and the operating frequency of the RFID system can be matched with the impedance of the first IC chip 6 to excite the first dipole antenna 5. It has been adjusted. In addition, since the thickness and dielectric constant (relative dielectric constant) of the animal ear tag RFID tag (first tag portion 1) are greatly related to the adjustment, a desired radiation pattern can be obtained by adjusting these conditions together. And get antenna gain. Since the above adjustment is designed on the assumption that it is used in a free space, when the first RFID tag 5a and the second RFID tag 8a are crossed, each other's antenna (the first dipole antenna 5 and the The second dipole antenna 8) undergoes electrical coupling, impedance mismatching occurs, and design characteristics do not appear. However, the first power feeding unit (first IC chip 6 and matching line) and the second power feeding unit (second IC chip 9 and matching line) are opposed to each other, and the first dipole antenna 5 and the second power feeding unit are opposed to each other. When the dipole antenna 8 intersects at an angle of 90 °, the first dipole antenna 5 and the second dipole antenna 8 are unlikely to interfere with each other, so that there is little influence on each electric field distribution. Accordingly, the electric field distribution of the dipole antenna is symmetric in terms of characteristics, but there is little influence on the symmetry of the radiation patterns of the first dipole antenna 5 and the second dipole antenna 8, and the communication distance is reduced. An animal ear tag RFID tag with small deterioration can be obtained. Therefore, wireless communication with the RFID reader / writer 16 becomes possible. In addition, since a dipole antenna is used, reading is possible from front to back and from top to bottom, so even if the animal to be managed moves violently from top to bottom and from side to side, even if a transmission wave is transmitted from the rear side, communication It is possible to perform wireless communication while minimizing distance degradation. It should be noted that even if the antenna patterns of the first dipole antenna 5 and the second dipole antenna 8 in the portion from the IC chip and the matching line partially overlap each other in plan view, it does not matter.

  As described above, the animal ear tag RFID tag according to Embodiment 1 is configured by fitting the first tag part 1 shown in FIG. 1 and the second tag part 2 shown in FIG. Now, a modification of the animal ear tag RFID tag according to the first embodiment will be described. By fitting the first tag part 1 described in FIG. 5 and the second tag part 2 described in FIG. 6, the animal ear tag RFID tag (modified example) according to the first embodiment is configured. ing. First, the first bill unit 1 will be described. As shown in FIGS. 5A and 5C, a first RFID tag 5 a is formed inside the first bill 1. Further, a second RFID tag 8a is formed inside. The positional relationship between the first RFID tag 5a and the second RFID tag 8a is such that the first power feeding unit in which the first IC chip 6 and the matching line are arranged, the second IC chip 9 and the matching line are arranged. The second power feeding unit arranged is opposed to the second power feeding unit. It can be said that the first IC chip 6 is electrically connected to the first power feeding unit via the first matching line in the first dipole antenna 5. Similarly, the second dipole antenna 8 can be said to have the second IC chip 9 electrically connected to the second feeding portion via the second matching line. 5A, the second IC chip 9 is arranged behind the first IC chip 6 and is not visible on the drawing.

  Next, the second bill part 2 will be described. As shown in FIG. 6A, the RFID tag is not formed inside the second bill portion 2. Since the second tag portion 2 is not provided with an RFID tag, the second tag portion 2 may be configured to have only the function of the male shaft portion 3. In this case, the relationship is not the relationship between the first bill portion 1 and the second bill portion 2, but the relationship between the bill portion 1 and the male shaft portion 3. In this case, since the male shaft portion 3 does not have the second bill portion 2, it is necessary to have a shape that the male shaft portion 3 alone does not fall off the ear 11 of the animal to be managed. Further, a male shaft portion 3 is formed on the first bill portion 1 and a female shaft portion 4 is formed on the second bill portion 2 so that the first bill portion 1 and the second bill portion 2 are fitted. Alternatively, the second bill portion 2 may be configured to have only the function of the female shaft portion 4. In this case, the relationship is not the relationship between the first bill portion 1 and the second bill portion 2, but the relationship between the bill portion 1 and the female shaft portion 4. Since the female shaft part 4 in this case does not have the second tag part 2, it is necessary that the female shaft part 4 has a shape that does not fall off the ear 11 of the animal to be managed by the female shaft part 4 alone.

  The first RFID tag 5a and the second RFID tag 8a may be formed on one main surface of the first tag unit 1 or on another main surface that is a surface opposite to the one main surface. In the case where the first RFID tag 5a and the second RFID tag 8a are formed on one main surface or the other main surface of the first tag unit 1, a protective layer is provided to protect the RFID tag and provide an environmental resistance. May be improved. For example, a first resin case 7 and a second resin case 10 as shown in FIG. 1 can be considered. Further, the first RFID tag 5a and the second RFID 8a may be separately formed on the inside of the first tag part 1, one main surface, or another main surface. For example, the first RFID tag 5a may be formed with the first tag portion 1 on one main surface, and the second RFID tag 8a may be formed with the first tag portion 1 on another main surface.

  As shown in FIG. 3 (a), the ear 11 is disposed between the first bill portion 1 and the second bill portion 2, and the male shaft portion 3 is inserted into the female shaft portion 4 to be fitted to each other. By doing so, the mounting of the animal ear tag RFID tag (variation) according to Embodiment 1 to the ear 11 is completed. FIG. 3B and FIG. 7 are views after the mounting. FIG. 7 is a view showing a state in which the second bill portion 2 is fitted to FIG. The fitting between the female shaft portion 4 and the male shaft portion 3 can be easily performed by using an ear tag mounting device. Further, the first bill portion 1 and the second bill portion 2 may be attached to the ear 11 in the reverse direction. Further, a male shaft portion 3 is formed on the first bill portion 1 and a female shaft portion 4 is formed on the second bill portion 2 so that the first bill portion 1 and the second bill portion 2 are fitted. May be. The female shaft portion 4 is shaped so as to cover most of the male shaft portion 3, but the female shaft portion 4 has only a sharpened portion formed at the tip of the male shaft portion 3 or the periphery of the sharpened portion. The fitting shape, that is, a shape that covers most of the male shaft portion 3 may not be used.

  As shown in FIG. 3 (b) and FIG. 7, the male shaft portion 3 can penetrate the ear 11, and the female shaft portion 4 is fitted with the male shaft portion 3, Depending on the shape of the male shaft portion 3 and the female shaft portion 4, only the female shaft portion 4 may penetrate the ear 11. Specifically, “the male shaft portion 3 is formed only by the sharpened portion formed at the tip of the male shaft portion 3” or “the sharpened portion where the main portion of the male shaft portion 3 is formed at the tip of the shaft portion 3. The case of “part” can be considered. Even in such a case, for the sake of convenience, if the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 passes through the ear 11, the state also indicates that “the male shaft portion 3 passes through the ear 11. Or “male shaft portion 3 can penetrate ear 11”.

  A straight line A shown in FIG. 5D is a plan view in a direction from the axis formed by fitting the male shaft portion 3 and the female shaft portion 4 toward the center of the first power feeding portion and the second power feeding portion. Show. A straight line B indicates the inclination of the first dipole antenna 5 in plan view. A straight line C indicates the inclination of the second dipole antenna 5 in plan view. Here, the angle formed by the straight line A and the straight line B, that is, the direction from the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 to the first power feeding portion, and the inclination of the first dipole antenna 5 The first angle formed by is 45 °. Further, the angle formed by the straight line A and the straight line C, that is, the direction from the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 to the second power feeding portion, and the inclination of the second dipole antenna 8 is obtained. The second angle formed is 135 °. Therefore, the absolute value of the difference between the first angle and the second angle is 90 °. This is because the first power feeding unit (first IC chip 6 and matching line) and the second power feeding unit (second IC chip 9 and matching line) are opposed to each other in the plan view of FIG. This means that the first dipole antenna 5 and the second dipole antenna 8 intersect at an angle of 90 °.

  Similar to the animal ear tag RFID tag (Embodiment 1) shown in FIG. 4, in the animal ear tag RFID tag (Modification of Embodiment 1) shown in FIG. 7, the first dipole antenna 5 The dimensions are adjusted so that the operating frequency of the RFID system and the impedance of the first IC chip 6 can be matched to excite the first dipole antenna 5. In addition, since the thickness and dielectric constant (relative dielectric constant) of the animal ear tag RFID tag (first tag portion 1) are greatly related to the adjustment, a desired radiation pattern can be obtained by adjusting these conditions together. And get antenna gain. Since the above adjustment is designed on the assumption that it is used in a free space, when the first RFID tag 5a and the second RFID tag 8a are simply overlapped, the antennas (the first dipole antenna 5 and The second dipole antenna 8) undergoes electrical coupling, impedance mismatching occurs, and design characteristics do not appear. However, the first power feeding unit (first IC chip 6 and matching line) and the second power feeding unit (second IC chip 9 and matching line) are opposed to each other, and the first dipole antenna 5 and the second power feeding unit are opposed to each other. When the dipole antenna 8 intersects at an angle of 90 °, the first dipole antenna 5 and the second dipole antenna 8 are unlikely to interfere with each other, so that there is little influence on each electric field distribution. Accordingly, the electric field distribution of the dipole antenna is symmetric in terms of characteristics, but there is little influence on the symmetry of the radiation patterns of the first dipole antenna 5 and the second dipole antenna 8, and the communication distance is reduced. An animal ear tag RFID tag with small deterioration can be obtained. Therefore, wireless communication with the RFID reader / writer 16 becomes possible. In addition, since a dipole antenna is applied, reading can be performed from the front and back, from the top and bottom (within the range permitted by the radiation pattern of the dipole antenna). Even if a transmission wave is transmitted from the wireless communication device, it is possible to perform wireless communication while minimizing the deterioration of the communication distance. It should be noted that even if the antenna patterns of the first dipole antenna 5 and the second dipole antenna 8 in the portion from the IC chip and the matching line partially overlap each other in plan view, it does not matter.

  In addition, in the animal ear tag RFID tag according to the first embodiment and the modified example thereof, the absolute value of the difference between the first angle and the second angle has been described as being 90 °. In order to prevent the antenna (the first dipole antenna 5 and the second dipole antenna 8) from being electrically coupled, causing impedance mismatch and resulting in no design characteristics, the first dipole antenna 5 And the second dipole antenna 8 only need to intersect with each other without covering most of them in plan view, so that the first angle differs from the second angle, that is, the first angle and the second angle. The absolute value of the difference from the angle may be other than 0 °. Of course, when the absolute value of the difference between the first angle and the second angle is 90 °, the distance between the first dipole antenna 5 and the second dipole antenna 8 is the longest, so the performance is high. Needless to say.

  In the animal ear tag RFID tag according to the first embodiment and the modification thereof, a hole is formed in the first tag portion 1 (the tag portion 1) without forming the female shaft portion 3 and the male shaft portion 4. The first bill portion 1 (the bill portion 1) may be attached to the ear 11 using a locking means capable of penetrating the ear 11 in the hole portion. As the locking means, use of an independent female shaft or male shaft, use of a bag, a pin, a clip, a string, a binding tool (tie wrap), or the like can be considered. Moreover, the hole part of the 1st tag part 1 (tag part 1) is formed in the same position as the position in which the female shaft part 3 and the male shaft part 4 are formed, or its vicinity, FIG.1 (d) FIG. The first angle and the second angle defined by d) are the first angle formed by the direction from the hole toward the first feeding part and the inclination of the first dipole antenna 5, and the first angle from the hole. The second angle formed by the direction toward the second feeding portion and the inclination of the second dipole antenna 8 is obtained.

  The IC chip, the antenna pattern of the dipole antenna, and the RFID system used for the animal ear tag RFID tag according to the first embodiment and its modification will be described with reference to FIGS. Since the feeding part of the first RFID tag 5a and the second RFID 8a and the pattern (antenna and matching line) in the vicinity thereof are opposed to each other, the protection of the IC chip, the IC chips, the antenna patterns and the matching line There is a possibility of failure due to contact between patterns, and by arranging a resin layer between the first RFID tag 5a (first dipole antenna 5) and the second RFID 8a (second dipole antenna 8) The possibility can be reduced. Either one of the first RFID tag 5a and the second RFID 8a is covered with a resin case (the first resin case 7 and the second resin case 11), or the first RFID tag 5a and the second RFID tag 5a. When either one of the RFID 8a is formed inside the bill portion (first bill portion 1, second bill portion 2), the resin case or bill portion corresponds to the resin layer. There is no need to provide a layer.

  As shown in FIG. 8A, when the first IC chip 6 and the second IC chip 9 do not directly face each other, the first antenna pattern 5 (matching circuit) and the second antenna pattern 8 (matching) It is only necessary to provide a resin layer with the circuit). As shown in FIG. 8B, when the first IC chip 6 and the second IC chip 9 face each other, a resin is provided between the first IC chip 6 and the second IC chip 9. A layer may be provided. Further, as shown in FIG. 8C, a resin layer may be formed by sealing the periphery of the first IC chip 6 and the second IC chip 9 with a resin. Although not shown, this is also applicable to the case where the first IC chip 6 and the second IC chip 9 do not directly face each other (FIG. 8A).

  1 to 8, the first IC chip 6 and the second IC chip 9 have been described as being located at the centers of the first RFID tag 5a and the second RFID tag 8a, respectively. Depending on the shape of the matching line (matching circuit) for impedance matching between the chip and the antenna, the first IC chip 6 and the second IC chip 9 are respectively connected to the first RFID tag 5a and the second RFID tag. It may not be located in the center with the tag 8a. Such an RFID tag can also be used for the animal ear tag RFID tag according to Embodiment 1 and its modification by making the power feeding portions face each other. FIG. 9 shows an RFID tag given as an example of such a case.

  The RFID tag shown in FIG. 9A has a short-circuit line 14 for short-circuiting antenna patterns in addition to the matching line 13, and the IC chip is not located at the center of the RFID tag. Further, since the RFID tag shown in FIG. 9B has a meander line, the antenna pattern can be miniaturized, and the dimensions of the tag part and the animal ear tag RFID tag itself are limited. It is effective when there is. The first RFID tag 5a and the second RFID tag 8a having the same shape are more advantageous in terms of manufacturing cost and symmetry of the radiation pattern obtained before and after. Different RFID tags may be used if there are constraints on the dimensions of the tag part or animal ear tag RFID tag itself. For example, the first RFID tag 5a shown in FIG. 9A and the second RFID tag 8a shown in FIG. 9B may be adopted. In the case of using a dipole antenna that is not linear, the first angle and the second angle in the animal ear tag RFID tag according to the first embodiment and the modification thereof are mainly obtained by extending the dipole. What is necessary is just to catch and set the direction which is linear, and what was caught linearly should just be applied to the straight lines B and C shown in FIG.1 (d) and FIG.5 (d). However, the dipole antenna is extremely meandering, and the first antenna pattern 5 and the second antenna pattern 8 are not connected to the animal ear tag RFID tag, regardless of how the first angle and the second angle are set. An antenna pattern that interferes to the extent that the desired operation cannot be obtained cannot be adopted.

  In the first embodiment and its modification, the first RFID tag 5a and the second RFID tag 8a are arranged in the vertical direction and the horizontal direction of the first tag unit 1 (FIG. 1) or the first The RFID tag 5a and the second RFID tag 8a are disposed at 45 ° and 135 ° with respect to the male shaft portion 3 or the female shaft portion 4 (hole portion) of the first tag portion 1. However, the arrangement of the first RFID tag 5a and the second RFID tag 8a is not limited to these as long as the relationship between the first angle and the second angle is different. However, the first RFID tag 5a and the second RFID tag 8a are arranged at 45 ° and 135 ° with respect to the male shaft portion 3 or the female shaft portion 4 (hole portion) of the first tag portion 1. As can be seen from FIG. 5, the antenna pattern is away from the male shaft portion 3 or the female shaft portion 4 (hole portion) of the first tag portion 1 where the ear 11 is in close contact. Needless to say, the superiority of is high.

  Finally, with reference to FIG. 10, the individual identification and management of the animals to be managed by the animal ear tag RFID tag and the details of the first RFID tag 5a and the second RFID tag 8a will be described. In FIG. 10B, the tag information is stored in the memory unit 20 of the RFID tag 6 in accordance with the use of the RFID system (individual identification, individual management, etc.), and the RFID reader / writer 16 itself The tag information can be updated, written, or read when the RFID tag 6 is present (attached to an animal to be managed) or moving in the transmission / reception area. The RFID reader / writer 16 transmits a command signal for instructing the RFID tag 6 to update, write, or read data from the antenna portion of the RFID reader / writer 16 to the RFID tag 6 as a transmission wave. The antenna unit 8 of the RFID tag 6 receives the transmission wave, and the transmission wave is detected and stored (smoothed) by the power supply control circuit 11 to generate an operation power supply for the RFID tag 6, and the operation power supply to each circuit of the RFID tag 6. Supply. Further, the command signal of the transmission wave is demodulated by the demodulator 21. The control unit 22 performs data processing from the instruction content of the demodulated command signal, and instructs the memory unit 20 to update or write the tag information, or both, and the memory by the instruction of the control unit 22 A reply wave obtained by modulating the read signal output from the unit 20 by the modulation unit 23 is transmitted from the antenna unit 8 to the antenna unit of the RFID reader / writer 16 via the analog unit 17, and the RFID reader / writer 16 receives the read signal. To obtain desired information.

  Here, with reference to FIG. 10 (a), the basic operation of the animal ear tag RFID tag according to the first embodiment and its modification will be described. The first tag unit 1 and the second tag There is an animal ear tag RFID tag that is configured so that the ear 11 of the animal to be managed is sandwiched between and the RFID reader / writer 16 (RFID reader / writer antenna) before and after the animal to be managed. is set up. During entrance / exit management and feeding of a managed animal to the management area, an interrogation wave is transmitted from the RFID reader / writer 16 installed on the front side of the managed animal to the animal ear tag RFID tag, and the transmitted wave is transmitted. Based on this, when the animal ear tag RFID tag transmits a return wave to the RFID reader / writer 16, the RFID reader / writer can read and identify the individual number of the animal to be managed. When examining the components and estrus of milk, the operator is located behind the animal's ear or under the ear of the object, and the interrogation wave is applied to the handy type reader / writer (RFID reader / writer 16) operated by the operator. Is transmitted to the animal ear tag RFID tag, and the animal ear tag RFID tag transmits a reply wave to the RFID reader / writer 16 based on the transmitted wave, whereby the individual number of the animal to be managed is read and identified by the RFID reader / writer. can do. In this way, reading from the front and back and from the top and bottom (within the range allowed by the radiation pattern of the dipole antenna) is possible, so that the animal to be managed and its ear 11 are moving up and down, left and right, or from the rear side Even if a transmission wave is transmitted, it is possible to perform wireless communication while minimizing the degradation of the communication distance.

  Hereinafter, for the sake of convenience, the first IC chip 6 and the second IC chip 9 have individual numbers of the same individual (animal to be managed) as the memory unit 20 of the first IC chip 6 and the second IC chip. The description will be made on the premise that the data is stored in the memory unit 20 of the N. However, even if separate IDs are stored in each memory unit 20 without storing the same individual number, the RFID reader / writer 16 or the management server (database) connected to the RFID reader / writer 16 in a wired or wireless manner, that is, if the separate IDs are set to be the same individual on the system, the first IC chip 6 and the second IC chip 6 It is not necessary to store the individual number of the same individual in the IC chip 9 itself. In other words, it is sufficient that the first RFID tag 5a and the second RFID tag 8a can be used to identify the same individual. Therefore, even if the ID and data stored in the first RFID tag 5a and the second RFID tag 8a have no relation to the individual number of the animal to be managed, it is pasted to a certain management target on the system. It is only necessary to know that the RFID tags being the first RFID tag 5a and the second RFID tag 8a. In this case, the first RFID tag 5a and the second RFID tag 8a can be easily reused or exchanged.

  At the time of entrance / exit management to the management area of the animal to be managed or feeding, an interrogation wave is transmitted to the animal ear tag RFID tag from the RFID reader / writer 16 installed on the front side of the animal to be managed, and the first tag RFID installed on the front side of the animal to be managed from the animal ear tag RFID tag by putting the information of the individual number stored in one or both of the IC chip 6 and the second IC chip 9 on the reply wave It is sent to the reader / writer 16. Of course, the RFID tag that has a high possibility of returning a reply wave to the RFID reader / writer 16 installed on the front side of the managed animal is one of the first RFID tag 5a and the second RFID tag 8a. Needless to say, it is closer to the RFID reader / writer 16 installed on the front side. Actually, unless the distance from the RFID reader / writer 16 is close, a reply wave is returned from the RFID tag (the first RFID tag 5a or the second RFID tag 8a) closer to the RFID reader / writer 16. The Therefore, the individual number of the animal to be managed can be read and identified by the RFID reader / writer 16.

  Similarly, when examining the components and estrus of milk, the operator is located behind the ears of animals or under the ears of objects, and is attached to a handy type reader / writer (RFID reader / writer 16) operated by the operator. Is transmitted to the animal ear tag RFID tag, and the individual number information stored in one or both of the first IC chip 6 and the second IC chip 9 is put on the return wave, It is sent from the ear tag RFID tag to the RFID reader / writer 16 installed on the front side of the animal to be managed. Of course, the RFID tag that has a high possibility of returning a return wave to the handy type reader / writer (RFID reader / writer 16) operated by the worker is the first RFID tag 5a or the second RFID tag 8a. Needless to say, it is closer to the handy type reader / writer (RFID reader / writer 16) to be operated. Actually, unless the distance from the RFID reader / writer 16 is close, a reply wave is returned from the RFID tag (the first RFID tag 5a or the second RFID tag 8a) closer to the RFID reader / writer 16. The Therefore, the individual number of the animal to be managed can be read and identified by the RFID reader / writer 16.

  In addition, animal ear tag tags not only provide individual information on animals to be managed, but also manage entry / exit management, feeding history, milk component and estrus history information (hereinafter simply referred to as history information). In order to do so, the solid-state information from the animal ear tag tag obtained by the RFID reader / writer 16 and the history information are linked, and the management server (wired or wirelessly connected to the RFID reader / writer 16 side or the RFID reader / writer 16 ( Database) side. However, as in an animal management system using such an animal ear tag tag, the animal ear tag tag stores history information in the animal ear tag tag, not on the RFID reader / writer 16 or the management server (database) side. If it is desired to construct an animal management system using the device, if the history information is individually recorded / added / deleted to the memory part 20 of the first IC chip 6 and the second IC chip 9 of the animal ear tag tag, Good.

  Specific explanation will be given in the following paragraphs. In this case, the RFID reader / writer 16 is arranged at a distance that allows communication with both the first RFID tag 5a and the second RFID tag 8a, and performs wireless communication with the first RFID tag 5a and the second RFID tag 8a. Let's talk on the assumption. However, even if the RFID reader / writer 16 is disposed at a distance that allows communication with the first RFID tag 5a and is difficult to communicate with the second RFID tag 8a, the memory unit of the first RFID tag 5a The distance at which the relative position between the RFID reader / writer 16 and the second RFID tag 8a is communicable with the second RFID tag 8a after the recording / addition / deletion of the information such as history information stored in the data 20 is completed. Instead, before the RFID reader / writer 16 attempts to record / add / delete information such as history information stored in the memory unit 20 of the second RFID tag 8a, another RFID reader / writer If it is guaranteed that information such as history information stored in the memory unit 20 of the second RFID tag 8a is not recorded / appended or deleted, the RFID Daraita 16 need not be located in both the possible communication distance of the first RFID tag 5a and the second RFID tag 8a.

  More specifically, assuming the description in the previous paragraph, the memory units 20 of the first IC chip 6 and the second IC chip 9 are independent, and history information is recorded in one memory unit 20. Even if the information is added or deleted, the other memory unit 20 is not recorded / added or deleted. Therefore, when the history information is recorded / added to or deleted from the memory unit 20, the time information from which the history information was obtained, that is, the time at which entry / exit management, feeding history, milk component and estrus history were recorded. Information (hereinafter simply referred to as time information) may be recorded / added to the memory unit 20 in accordance with recording / adding or deleting of history information. Temporarily, the history information α associated with the time information A is stored in the memory unit 20 of the first IC chip 6, and the time later than the time information A is stored in the memory unit 20 of the second IC chip 9. If the history information β associated with the time information B is stored, the RFID reader / writer 16 can communicate with both the first RFID tag 5a and the second RFID tag 8a at the first distance. Wirelessly communicates with the RFID tag 5a and the second RFID tag 8a, and the history information β associated with the later time information B of the time information A and the time information B is the latest. It can be judged that. The time information can be easily obtained by forming a configuration having a clock function in the RFID reader / writer 16 or the management server (database). Further, time information may be incorporated into history information and used as history information.

  From the time information, it is understood that the memory unit 20 of the first IC chip 6 and the second IC chip 9 has the latest history information, but the first RFID tag 5a and the second The information stored in the memory unit 20 of the first IC chip 6 and the second IC chip 9 is integrated using one of the RFID reader / writers 16 at a distance communicable with both of the RFID tags 8a. The information may be unified. Specifically, as described above, the history information α associated with the time information A is stored in the memory unit 20 of the first IC chip 6, and is stored in the memory unit 20 of the second IC chip 9. When history information β associated with time information B, which is a time later than time information A, is stored, when information is integrated, the memory unit 20 of the first IC chip 6 stores time information B and history information β are added, and time information A and history information α are added to the memory unit 20 of the second IC chip 9. As a result, the time information A and B and the history information α and β are stored in the memory units 20 of both the first IC chip 6 and the second IC chip 9. When unifying to one information, particularly when unifying to the latest information, the time information A and the history information α are deleted from the memory unit 20 of the first IC chip 6, and the time information B and the history information β are deleted. Is added. The order of deletion and appending operations does not matter. Since the information recorded in the memory unit 20 of the second IC chip 9 is the latest, it is left as it is. In both cases of integrating information and unifying the latest information, the fact that these processes have been performed is referred to as “information unification” information (hereinafter referred to as unification information) and the first IC. If recording and appending are performed in both the memory unit 20 of the chip 6 and the memory unit 20 of the second IC chip 9, the individual identification and the individual management of the animals to be managed become more accurate.

Embodiment 2. FIG.
In the first embodiment, the description has been given of the case where two RFID tags are formed on either the first tag unit 1 or the second tag unit 2, but as shown in FIG. When the animal ear tag RFID tag covers a relatively small area with the ear 11, good performance can be obtained. However, as the area covered with the ear 11 increases, the performance may deteriorate. Therefore, in the second embodiment, an animal ear tag RFID tag in which RFID tags are formed on both the first tag unit 1 and the second tag unit 2 will be described. The basic configuration other than the RFID tag formed on both the first tag unit 1 and the second tag unit 2, the antenna pattern of the dipole antenna as shown in FIG. Since it is common, description is omitted in the second embodiment.

  A second embodiment of the present invention will be described with reference to FIGS. FIG. 11A is a front view of the first tag part constituting the animal ear tag RFID tag (surface facing the ear of the animal to be managed), and FIG. 11B is the first view related to FIG. FIG. 11C is a schematic view showing the inclination of the dipole antenna in the first bill portion according to FIG. 11A. FIG. (A) is a front view of the second tag part constituting the animal ear tag RFID tag (surface facing the ear of the animal to be managed), and FIG. 12 (b) is a first view according to FIG. 12 (a). Side view of the bill part (dipole antenna and IC chip are not shown), FIG. 13 (a) is a schematic diagram before mounting the animal ear tag RFID tag, and FIG. 13 (b) is the animal ear tag RFID tag. FIG. 14A is a schematic diagram after mounting, and FIG. 14A shows a first tag portion and a second tag constituting the animal ear tag RFID tag. FIG. 14B is a front view of the part (a view of the first tag part seen from the surface facing the ear of the animal to be managed, and the illustration of the first tag part is omitted), FIG. It is a side view (the side seen from the arrow direction of Drawing 14 (a)) of the 1st bill part concerning the (a), and the 2nd bill part. In the drawings, the same reference numerals denote the same or corresponding parts, and detailed descriptions thereof are omitted.

  FIG. 15A is a front view of a first tag part constituting the animal ear tag RFID tag (a surface facing the ear of the animal to be managed), and FIG. 15B is a diagram related to FIG. 15A. FIG. 15C is a schematic view showing the inclination of the dipole antenna in the first bill portion according to FIG. 15A, and FIG. 16 is a side view of the bill portion of FIG. 1 (dipole antenna and IC chip are not shown). (A) is a front view of the second tag part constituting the animal ear tag RFID tag (surface facing the ear of the animal to be managed), and FIG. 16 (b) is a first view according to FIG. 16 (a). Side view of bill part (dipole antenna and IC chip are not shown), FIG. 17 (a) is a front view of the first and second bill parts constituting the animal ear tag RFID tag (managed object) ) Is a view of the first bill portion viewed from the surface facing the animal's ear, and the illustration of the first bill portion is omitted) 17 (b) is a first tongue and a side view of a second tongue according to FIG. 17 (a) (side viewed from the direction of the arrow in FIG. 17 (a)). In the drawings, the same reference numerals denote the same or corresponding parts, and detailed descriptions thereof are omitted.

FIG. 18A is a front view of the first tag part constituting the animal ear tag RFID tag (a surface facing the ear of the animal to be managed), and FIG. 18B is a diagram related to FIG. FIG. 18C is a schematic view showing the inclination of the dipole antenna in the first bill portion according to FIG. 18A, and FIG. 19 is a side view of the bill portion of FIG. 1 (dipole antenna and IC chip are not shown). (A) is a front view of the second tag part constituting the animal ear tag RFID tag (surface facing the ear of the animal to be managed), and FIG. 19 (b) is a first view according to FIG. 19 (a). Side view of the bill part (dipole antenna and IC chip are not shown), FIG. 20A is a front view of the first and second bill parts constituting the animal ear tag RFID tag (management target) ) Is a view of the first bill portion viewed from the surface facing the animal's ear, and the illustration of the first bill portion is omitted) 20 (b) is a side view of the first bill portion and the second bill portion according to FIG. 20 (a) (side view from the direction of the arrow in FIG. 20 (a)), FIG. 13, FIG. 14, and FIG. In FIG. 20, the first bill portion is attached to the front side and the second bill portion is attached to the rear side so as to sandwich the ear of the animal to be managed. However, FIG. 3A is a view before the first bill portion and the second bill portion are attached. In the drawings, the same reference numerals denote the same or corresponding parts, and detailed descriptions thereof are omitted.

  By fitting the first tag part 1 described in FIG. 11 and the second tag part 2 described in FIG. 12, the animal ear tag RFID tag according to the second embodiment is configured. First, the first bill unit 1 will be described. As shown in FIGS. 11 (a) and 11 (c), the first RFID protected by the first resin case 7 on one main surface of the first bill 1 (the surface facing the ear of the animal to be managed). A tag 5a is pasted. In the first dipole antenna 5, the first IC chip 6 is electrically connected to the first power feeding unit via the first matching line. Next, the second bill part 2 will be described. As shown in FIG. 12 (a), an eighth RFID tag 8a protected by the second resin case 11 is provided on one main surface of the second bill portion 2 (the surface facing the ear of the animal to be managed). It is pasted. In the second dipole antenna 8, the second IC chip 9 is electrically connected to the second power feeding unit via the second matching line. A male shaft portion 3 is formed on the first bill portion 1 and a female shaft portion 4 is formed on the second bill portion 2 to fit the first bill portion 1 and the second bill portion 2 together. May be.

  The 1st RFID tag 5a and the 2nd RFID tag 8a are the other main surface which is a surface opposite to 1 main surface of the 1st tag part 1 and the 2nd tag part 2, and the 1st You may form in either the inside of the tag part 1 and the 2nd tag part 2. FIG. When the first RFID tag 5a is formed inside the first tag unit 1 and the second RFID tag 8a is formed inside the second tag unit 2, the tag unit is connected to the first RFID tag 5a and Since it can serve as a protective layer for the second RFID tag 8a, the first resin case 7 and the second resin case 10 need not be provided. This corresponds to that shown in FIGS. FIG. 15 corresponds to FIG. 11, FIG. 16 corresponds to FIG. 12, and FIG. 17 corresponds to FIG. 14, and the configuration is the same except for the location where the RFID tag is formed and the presence or absence of the resin case.

  As shown in FIG. 13 (a), the ear 11 is disposed between the first bill portion 1 and the second bill portion 2, and the male shaft portion 3 is inserted into the female shaft portion 4 so as to fit each other. This completes the mounting of the animal ear tag RFID tag according to the twelfth embodiment to the ear 11. FIG. 13B and FIG. 14 (FIG. 17) are views showing the state after the mounting. FIG. 14 is a view showing a state where the second bill portion 2 is fitted to FIG. The fitting between the female shaft portion 4 and the male shaft portion 3 can be easily performed by using an ear tag mounting device. Further, the first bill portion 1 and the second bill portion 2 may be attached to the ear 11 in the reverse direction. Further, a male shaft portion 3 is formed on the first bill portion 1 and a female shaft portion 4 is formed on the second bill portion 2 so that the first bill portion 1 and the second bill portion 2 are fitted. May be. The female shaft portion 4 is shaped so as to cover most of the male shaft portion 3, but the female shaft portion 4 has only a sharpened portion formed at the tip of the male shaft portion 3 or the periphery of the sharpened portion. The fitting shape, that is, a shape that covers most of the male shaft portion 3 may not be used. The positional relationship between the first RFID tag 5a and the second RFID tag 8a is such that the first power feeding unit in which the first IC chip 6 and the matching line are arranged, the second IC chip 9 and the matching line are arranged. The second power feeding unit arranged is opposed to the second power feeding unit.

  As shown in FIGS. 13B and 14 (FIG. 17), the male shaft portion 3 can penetrate the ear 11, and the female shaft portion 4 is fitted with the male shaft portion 3. However, depending on the shape of the male shaft portion 3 and the female shaft portion 4, only the female shaft portion 4 may penetrate the ear 11. Specifically, “the male shaft portion 3 is formed only by the sharpened portion formed at the tip of the male shaft portion 3” or “the sharpened portion where the main portion of the male shaft portion 3 is formed at the tip of the shaft portion 3. The case of “part” can be considered. Even in such a case, for the sake of convenience, if the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 passes through the ear 11, the state also indicates that “the male shaft portion 3 passes through the ear 11. Or “male shaft portion 3 can penetrate ear 11”.

  A straight line A shown in FIGS. 11 (c) and 15 (c) indicates a direction from a shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 toward the center of the first power feeding portion in plan view. Show. A straight line B indicates the inclination of the first dipole antenna 5 in plan view. The angle formed by the straight line A and the straight line B, that is, the direction from the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 to the first power feeding portion and the inclination of the first dipole antenna 5 is formed. The angle of 1 is 90 °. Further, the second dipole antenna 8 shown in FIGS. 12A and 16A is directed from the axis formed by fitting the male shaft portion 3 and the female shaft portion 4 to the center of the second power feeding portion. The direction and inclination match. That is, the second angle formed by the direction from the axis formed by fitting the male shaft portion 3 and the female shaft portion 4 to the second power feeding portion and the inclination of the second dipole antenna 8 is 0 °. . Therefore, the absolute value of the difference between the first angle and the second angle is 90 °. This is because the first power feeding unit (first IC chip 6 and matching line) and the second power feeding unit (matching with the second IC chip 9) in the plan view of FIG. 11 (c) and FIG. 12 (a). The first dipole antenna 5 and the second dipole antenna 8 cross each other at an angle of 90 °. FIG. 14 (FIG. 17) shows the state. Therefore, wireless communication with the RFID reader / writer 16 becomes possible. In addition, since the dipole antennas intersect (90 °) in plan view, as in the first embodiment, reading can be performed from the front and rear and from the top and bottom (within the range allowed by the radiation pattern of the dipole antenna). Even when the target animal is moving violently up and down, left and right, or even when a transmission wave is transmitted from the rear side, it is possible to perform wireless communication with as little degradation of the communication distance as possible.

  As described above, by fitting the first bill portion 1 described in FIG. 11 (FIG. 15) and the second bill portion 2 described in FIG. 12 (FIG. 16), the animal ear according to the second embodiment. Although it has been described that the target RFID tag is configured, a modified example of the animal ear tag RFID tag according to the second embodiment will be described. By fitting the first tag part 1 described in FIG. 18 and the second tag part 2 described in FIG. 19, an animal ear tag RFID tag (modification) according to the second embodiment is configured. ing. First, the first bill unit 1 will be described. As shown in FIGS. 18A and 18C, a first RFID tag 5 a is formed inside the first bill 1. In the first dipole antenna 5, the first IC chip 6 is electrically connected to the first power feeding unit via the first matching line. Next, the second bill part 2 will be described. As shown in FIG. 19A, an eighth RFID tag 8 a is formed inside the second tag part 2. In the second dipole antenna 8, the second IC chip 9 is electrically connected to the second power feeding unit via the second matching line. A male shaft portion 3 is formed on the first bill portion 1 and a female shaft portion 4 is formed on the second bill portion 2 to fit the first bill portion 1 and the second bill portion 2 together. May be. The first RFID tag 5a and the second RFID tag 8a are one main surface of the first tag portion 1 and the second tag portion 2 or another main surface which is a surface opposite to the one main surface. You may form in either.

  As shown in FIG. 13 (a), the ear 11 is disposed between the first bill portion 1 and the second bill portion 2, and the male shaft portion 3 is inserted into the female shaft portion 4 so as to fit each other. By doing so, the mounting of the animal ear tag RFID tag (variation) according to Embodiment 2 to the ear 11 is completed. FIG. 13B and FIG. 20 are views after the mounting. The fitting between the female shaft portion 4 and the male shaft portion 3 can be easily performed by using an ear tag mounting device. Further, the first bill portion 1 and the second bill portion 2 may be attached to the ear 11 in the reverse direction. Further, a male shaft portion 3 is formed on the first bill portion 1 and a female shaft portion 4 is formed on the second bill portion 2 so that the first bill portion 1 and the second bill portion 2 are fitted. May be. The female shaft portion 4 is shaped so as to cover most of the male shaft portion 3, but the female shaft portion 4 has only a sharpened portion formed at the tip of the male shaft portion 3 or the periphery of the sharpened portion. The fitting shape, that is, a shape that covers most of the male shaft portion 3 may not be used.

  As shown in FIG. 13 (b) and FIG. 20, the male shaft portion 3 can penetrate the ear 11, and the female shaft portion 4 is fitted with the male shaft portion 3, Depending on the shape of the male shaft portion 3 and the female shaft portion 4, only the female shaft portion 4 may penetrate the ear 11. Specifically, “the male shaft portion 3 is formed only by the sharpened portion formed at the tip of the male shaft portion 3” or “the sharpened portion where the main portion of the male shaft portion 3 is formed at the tip of the shaft portion 3. The case of “part” can be considered. Even in such a case, for the sake of convenience, if the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 passes through the ear 11, the state also indicates that “the male shaft portion 3 passes through the ear 11. Or “male shaft portion 3 can penetrate ear 11”.

  A straight line A shown in FIG. 18C indicates a direction from the axis formed by fitting the male shaft portion 3 and the female shaft portion 4 toward the center of the first power feeding portion in plan view. A straight line B indicates the inclination of the first dipole antenna 5 in plan view. Here, the angle formed by the straight line A and the straight line B, that is, the direction from the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 to the first power feeding portion, and the inclination of the first dipole antenna 5 The first angle formed by is 135 °. A straight line A shown in FIG. 19C indicates a direction from the axis formed by fitting the male shaft portion 3 and the female shaft portion 4 toward the center of the second power feeding portion in plan view. A straight line B indicates the inclination of the second dipole antenna 8 in plan view. Here, the angle formed by the straight line A and the straight line B, that is, the direction from the shaft formed by fitting the male shaft portion 3 and the female shaft portion 4 to the second feeding portion, and the inclination of the second dipole antenna 8 The second angle formed by is 45 °. Therefore, the absolute value of the difference between the first angle and the second angle is 90 °. This is because the first power feeding unit (first IC chip 6 and matching line) and the second power feeding unit (second IC chip 9 and matching line) are opposed to each other in the plan view of FIG. This means that the first dipole antenna 5 and the second dipole antenna 8 intersect at an angle of 90 °. FIG. 20 shows the state. Therefore, wireless communication with the RFID reader / writer 16 becomes possible. In addition, since the dipole antennas intersect (90 °) in plan view, as in the first embodiment, reading can be performed from the front and rear and from the top and bottom (within the range allowed by the radiation pattern of the dipole antenna). Even when the target animal is moving violently up and down, left and right, or even when a transmission wave is transmitted from the rear side, it is possible to perform wireless communication with as little degradation of the communication distance as possible.

  As in the first embodiment, the animal ear tag RFID tag according to the second embodiment and its modification is used with the absolute value of the difference between the first angle and the second angle of 90 °. As described above, in order to avoid that the mutual antennas (the first dipole antenna 5 and the second dipole antenna 8) are electrically coupled and impedance mismatch occurs, and the characteristic at the time of design does not appear. Since the first dipole antenna 5 and the second dipole antenna 8 need only intersect with each other without covering most of them in plan view, the first angle differs from the second angle, that is, The absolute value of the difference between the first angle and the second angle may be other than 0 °. Of course, when the absolute value of the difference between the first angle and the second angle is 90 °, the distance between the first dipole antenna 5 and the second dipole antenna 8 is the longest, so the performance is high. Needless to say.

  In the animal ear tag RFID tag according to the second embodiment and the modification thereof, a hole is formed in the first tag portion 1 and the second tag portion 2 without forming the female shaft portion 3 and the male shaft portion 4. Then, the first bill portion 1 (the bill portion 1) may be attached to the ear 11 using a locking means capable of penetrating the ear 11 in the hole portion. Specifically, a first hole portion is formed in the first bill portion 1, and a second hole portion is formed in the second bill portion 2. The locking means between the first tag part 1 (first hole part) and the second tag part 2 (second hole part) is the use of an independent female shaft or male shaft or a hook, pin, clip, The use of a string, a binding tool (tie wrap), etc. can be considered. Further, the first hole portion and the second hole portion are formed at the same position as or near the position where the female shaft portion 3 and the male shaft portion 4 are formed, and are defined by the female shaft portion 3 and the male shaft portion 4. The first angle and the second angle are defined as a first angle formed by a direction from the hole portion toward the first power feeding portion and an inclination of the first dipole antenna 5, and from the hole portion to the second power feeding portion. And a second angle formed by the direction of the second dipole antenna 8 and the inclination of the second dipole antenna 8.

  In the second embodiment and its modifications, the first RFID tag 5a and the second RFID tag 8a are arranged in the horizontal direction of the first bill portion 1 and the vertical direction of the second bill portion 2. (FIGS. 14 and 17) and the first RFID tag 5a and the second RFID tag 8a are 135 ° (first bill portion 1) with respect to the male shaft portion 3 or the female shaft portion 4 (hole portion). And 45 ° (second bill portion 2), the first RFID tag 5a and the second RFID tag 8a are arranged with respect to the first angle and the second angle. As long as the relationship is a different angle, it is not limited to these. However, the first RFID tag 5a and the second RFID tag 8a are arranged at 135 ° and 45 ° with respect to the male shaft portion 3 or the female shaft portion 4 (hole portion) of the first tag portion 1. As can be seen from FIG. 13, the male shaft portion 3 or the female shaft portion 4 (first hole portion) of the first bill portion 1 and the second bill portion 2 of which the ear 11 is in close contact. Needless to say, the male shaft portion 3 or the female shaft portion 4 (second hole portion) and the antenna pattern are away from each other, so that the superiority in terms of performance is high.

  Finally, the details of the first RFID tag 5a and the second RFID tag 8a will be described with reference to FIGS. 21 to 23, reference numeral 26 denotes an animal to be managed, and the animal ear tag RFID tag according to the second embodiment and its modification is attached to the ear 11 thereof. FIG. 21 shows the front of the animal 26 to be managed, and it can be seen that the first tag portion 1 of the animal ear tag RFID tag is mounted in the shape of the ear 11. FIG. 22 is a side view of the head of the animal 26 to be managed shown in FIG. FIG. 22 also shows an enlarged view of the peripheral portion of the ear 11 surrounded by a dotted line, and shows how the first tag portion 1 and the second bill portion that constitute the animal ear tag RFID tag. 2 is attached to the ear 11. In the drawings, the same reference numerals denote the same or corresponding parts, and detailed descriptions thereof are omitted.

  Here, with reference to FIG. 23, the basic operation of the animal ear tag RFID tag according to the second embodiment and its modification will be described. The first tag unit 1 and the second tag unit are as follows. There is an animal ear tag RFID tag that is configured so as to sandwich the ear 11 of an animal to be managed, and an RFID reader / writer 16 (antenna for RFID reader / writer) is installed in front of and behind the animal 26 to be managed, respectively. ing. During entrance / exit management or feeding to the management area of the animal 26 to be managed, an inquiry wave is sent from the RFID reader / writer 16 (the RFID reader / writer 16 on the left side in FIG. 23) installed in front of the animal 26 to be managed. An animal ear tag RFID tag transmits a reply wave to the RFID reader / writer 16 based on the transmitted wave, and the individual number of the animal to be managed is read and identified by the RFID reader / writer. be able to. When examining milk components and estrus, a handy reader / writer (in FIG. 23, the RFID reader / writer 16 on the right side) is located on the back of the animal's ear or under the ear of the object. ) To the animal ear tag RFID tag, and the animal ear tag RFID tag transmits a reply wave to the RFID reader / writer 16 based on the transmitted wave, so that the RFID reader / writer Individual number can be read and identified.

  In this way, reading from the front and back and from the top and bottom (within the range allowed by the radiation pattern of the dipole antenna) is possible, so that the animal to be managed and its ear 11 are moving up and down, left and right, or from the rear side Even if a transmission wave is transmitted, it is possible to perform wireless communication while minimizing the degradation of the communication distance. Further, unlike the first embodiment, the animal cow ear RFID tag according to the second embodiment has RFID tags on both the first tag portion 1 and the second tag portion 2 even when the ear 11 and the area covered are large. Since it is formed, the communication distance can be further reduced as much as possible, and wireless communication can be performed. In the first IC chip 6 and the second IC chip 9, the individual numbers of the same individuals (animals to be managed) are stored in the respective memory units 20, so that they are described in the first embodiment. In addition to the individual number of the same individual as “Animal management system using animal ear tag tags” using the same individual number, additional information (history information, time information, unified information, etc.) is added. Thus, it is possible to realize an “animal management system using an animal ear tag tag” which is performed by individually recording / adding / deleting to / from the first IC chip 6 and the second IC chip 9. Details have been described in the first embodiment and will not be described.

Embodiment 3 FIG.
In the second embodiment, since the RFID tag is formed on both the first tag part 1 and the second tag part 2, it is possible to further reduce the degradation of the communication distance as much as possible and perform wireless communication. As described above, this can maintain the state in which the first bill portion 1 and the second bill portion 2 are attached to the ear 11 with the mutual relationship as set by the first angle and the second angle. And the male shaft portion 3 and the female shaft portion 4 are weakly fixed, and the positional relationship is different from the stage where the first tag portion 1 and the second tag portion 2 are attached, that is, the first tag portion. If the 1 and the second bill 2 are misaligned, the desired performance may not be obtained. However, in order to avoid this, if the first bill portion 1 and the second bill portion 2 are firmly fixed to the ear 11, there is a possibility of giving stress to the animal to be managed. In the third embodiment, this countermeasure will be described. Of course, even if the first tag part 1 and the second tag part 2 are slightly shifted, the first antenna pattern 5 and the second antenna pattern 8 can obtain a desired operation as an animal ear tag RFID tag. It goes without saying that there is no problem as long as the interference does not occur.

  A third embodiment of the present invention will be described with reference to FIGS. 24 and 25, 27 is a fixing means for fixing the first tag part 1 and the second tag part 2, 27a is a female shaft part for fixing which is an example of the fixing means 27, and 27b is a fixing means 27. A fixing string 27 c as an example is a fixing tie tool as an example of the fixing means 27. In the drawings, the same reference numerals denote the same or corresponding parts, and detailed descriptions thereof are omitted. As shown in FIG. 24, the fixing means 27 is a female shaft (female shaft portion 4) and a male shaft (male male) which are locking means attached to the first bill portion 1, the second bill portion 2, and the ear 11. It is a member different from the shaft portion 3), the collar, the pin, the clip, the string, the binding tool (tie wrap) and the like. FIG. 25 shows a specific example of the fixing means 27.

  FIG. 25A employs a female shaft (female shaft portion 4) and a male shaft (male shaft portion 3) of the same type as the locking means for the fixing means 27. FIG. 25 (a) is a view showing the state after fitting, so that only the fixing female shaft portion 27a is visible, and the fixing male shaft portion is not visible because it is fitted into the fixing female shaft portion 27a. FIG. 25B shows a case where the fixing female shaft portion 27 a and the fixing male shaft portion which are the fixing means 27 also penetrate the ear 11. That is, the ear 11 is equivalent to the female shaft (female shaft portion 4) and the male shaft (male shaft portion 3) penetrating at two locations.

  25 (c) and 25 (d) employ a fixing string 27b and a fixing tie 27c (tie wrap) as the fixing means 27. To the extent that the first antenna pattern 5 and the second antenna pattern 8 interfere with each other and a desired operation as an animal ear tag RFID tag cannot be obtained, Therefore, the fixing means 27 may be less fixed than the fixing female shaft portion 27a such as the fixing string 27b and the fixing tie 27c that are fixed by tying. In addition, the fixing string 27b and the fixing tie 27c also have an effect that it is easy to readjust the positional relationship between the first tag part 1 and the second tag part 2, so that the animal to be managed Can respond to the growth of 26. Further, the fixing means 27 may be a hook, a pin, a clip, or the like. Further, in FIG. 24 and FIG. 25, the fixing means 27 is provided at the lower part of the animal ear tag RFID tag. However, the fixing means 27 is fixed unless it is arranged so as to significantly hinder the operation of the animal ear tag RFID tag. There is no restriction | limiting in particular in the position in which the means 27 is provided.

1 .. 1st tag part, 2 .. 2nd tag part, 3 .. male shaft part, 4 .. female shaft part, 5 .. 1st dipole antenna, 5a ... 1st RFID tag, 6 .. First IC chip, 7... First resin case, 8.. Second dipole antenna, 8 a ... Second RFID tag, 9 ... Second IC chip, 10 ... Second Resin case, 11 ... ear, 12 ... space, 13 ... matching line, 14 ... short circuit line, 15 ... first dipole antenna (meander line), 16 ... RFID reader / writer, 17 ... analog , 18... A / D conversion unit, 19.. Power supply control unit, 20 .. Memory unit, 21 .. Demodulation unit, 22... Control unit, 23 .. Modulation unit, 25. 26..Animal to be managed, 27..Fixing means, 27a..Fixing female shaft part, 27b..Fixing string, ... fixing the tie.

Claims (10)

  A first bill portion having a first hole portion, a second bill portion having a second hole portion, and a first matching line provided in the first bill portion, A first dipole antenna to which a first IC chip is electrically connected, and a second power feeding portion facing the first power feeding portion, the second bill portion being provided on the second bill portion, A second dipole antenna in which a second IC chip is electrically connected to the power feeding portion via a second matching line, and the first hole portion and the second hole portion, A locking means capable of penetrating the animal's ear, and a first angle formed by a direction from the first hole portion toward the first power feeding portion and an inclination of the first dipole antenna; The second angle formed by the direction from the second hole toward the second power feeding portion and the inclination of the second dipole antenna is different. Animal ear tag RFID tag, wherein the time at which.   A male shaft portion capable of penetrating the animal's ear, a female shaft portion to which the male shaft portion is fitted, a first tag portion formed on the female shaft portion, and formed on the male shaft portion In the animal ear tag RFID tag provided with the second tag portion, the first IC chip is provided on the first tag portion, and the first IC chip is electrically connected to the first power feeding portion via the first matching line. First dipole antennas connected to each other, a second power feeding portion facing the first power feeding portion, a second matching line provided on the second power feeding portion, and a second matching line A second dipole antenna to which a second IC chip is electrically connected via a pin, and a direction from the shaft formed by fitting the male shaft portion and the female shaft portion toward the first power feeding portion And the first angle formed by the inclination of the first dipole antenna and the axis formed by fitting the male shaft portion and the female shaft portion to each other. Animal ear tag RFID tag, wherein the second angle formed by the direction toward the feeding portion and the inclination of the second dipole antenna is a different angle. The first dipole antenna is provided inside the first bill portion, on one main surface, or on another main surface, and the second dipole antenna is provided on the inside of the second bill portion. The animal ear tag RFID tag according to claim 1, which is provided on either the main surface or another main surface. The animal ear tag RFID tag according to any one of claims 1 to 3 , further comprising fixing means for fixing the first tag part and the second tag part. The animal ear tag RFID tag according to claim 1, wherein at least one of the first angle and the second angle is 45 ° or 135 °. The animal ear tag RFID tag according to any one of claims 1 to 5 , wherein at least one antenna element of the first dipole antenna or the second dipole antenna is a meander line. The animal ear tag RFID tag according to any one of claims 1 to 6 , wherein antenna shapes of the first dipole antenna and the second dipole antenna are the same. The animal ear tag RFID tag according to claim 1 , wherein an absolute value of a difference between the first angle and the second angle is 90 °. The animal ear tag RFID tag according to claim 1, wherein the first IC chip and the second IC chip store the same individual number. The animal ear tag RFID tag according to claim 9 , wherein the first IC chip and the second IC chip can individually record, add, and delete information other than the individual number of the same individual.

Images