JPH08149042A - Identification system and coil used to the system - Google Patents

Abstract

PURPOSE: To facilitate the production of a read-write antenna and to secure the sure communication when an identification system is applied for identification of the cattle, etc. CONSTITUTION: The multicore cables 41 and 42 are circularly arranged, and the coated optical fibers of the both cables are set opposite to each other between both end parts and connected together at the end parts adjacent to each other. Thus a coil is formed. This coil is attached to a base member so that a read-write antenna 12 is obtained. Then such a coil is also applied to a data carrier. That is, the coils are put on the cattle like collars. In such a way, the coil can be easily produced and the communication efficiency is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an identification system used for identifying a moving body and a structure of a coil of a data carrier used for attaching to a read / write antenna, a moving object, livestock or the like.

[0002]

2. Description of the Related Art Conventionally, an identification system has been proposed for identifying livestock and managing the weight of livestock. This is JP-A-1-265835
, Which has a memory for identification objects such as livestock
A card (data carrier) is provided, and necessary information is written in the data carrier by data transmission from the outside.
Then, when the identification object attached with the data carrier arrives at the position where the read / write antenna is installed, the information is read out as necessary, the weight is measured and written, and the identification system is used.

Such a data carrier is used by being attached to livestock or the like, and is configured to write or read necessary data to or from the writing / reading control unit arranged on the side of the scale. Here, the read / write antenna that performs data transmission with the data carrier or the data carrier is configured using a coil. This coil is manufactured by a method of winding the coil wire by hand so that it does not come loose while aligning the coil wires, or by a machine. Then, data is mutually transmitted via this coil.

[0004]

However, in such a conventional identification system, the manufacturing efficiency of the coil is low, and a jig necessary for winding the coil is required when the coil is wound by a machine. In particular, there has been a drawback that as the size of the coil increases, its assembling property deteriorates, and the price of the assembling machine, jig, etc. increases.

In particular, when such a livestock identification system is used to manage measurement data such as weight, feeding, milking, etc.,
There is a drawback that an antenna coil as large as the height of livestock such as cows is required, which makes manufacturing difficult.

The antenna coil used in such an identification system has a relationship with a data carrier as shown in FIG. 9 (a).
In the parallel state as shown in Fig. 9, since the magnetic fluxes are interlinked, a wide communication area can be obtained as shown by hatching.
As shown in (b), if the coils are in a vertical positional relationship, the interlinking region is extremely small, and only the both ends of the antenna coil shown by hatching are the communicable regions. Therefore, even when the communication is performed with the data carrier provided in the livestock, there is a drawback that the communication cannot always be normally performed.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to facilitate manufacture of a read / write antenna or a coil of a data carrier and to enable stable communication. To do.

[0008]

The invention according to claim 1 of the present application is an identification system comprising a data carrier and an identification device each having a coil, and performing data transmission by electromagnetic coupling through each coil. The coil of the device is
A flat base member openably and closably mounted, and a multi-core cable is annularly arranged on one surface of the base member, and the core wires of the multi-core cable are displaced from each other between opposing ends of the other end part. It is characterized by being formed by connecting to a core wire.

The invention according to claim 2 of the present application is an identification system comprising a data carrier and an identification device each having a coil, and performing data transmission by electromagnetic coupling through the respective coils. It is characterized in that the core cable has an annular shape, and includes a coil formed by shifting the core wires between opposite ends and connecting the core wires to the other end.

The invention according to claim 3 of the present application is an identification system comprising a data carrier each having a coil and an identification device, and performing data transmission by electromagnetic coupling via each coil, wherein the identification device is openable and closable. An attached flat base member and a multi-core cable are annularly arranged on one surface of the base member, and the core wires are displaced from each other between opposite ends of the multi-core cable and connected to the core wire of the other end. The data carrier has an annular coil formed by connecting the core wires of the other end by shifting the core wires from each other between the opposing ends of the multi-core cable. It is characterized by including the data of livestock.

[0011]

According to the present invention having such characteristics, an antenna composed of a multi-core cable is arranged in a passage on a freely openable / closable plate-shaped base member, so that data can be obtained when livestock or the like passes through the antenna. There is a state in which the position is parallel to the carrier coil. At this time, data transmission can be reliably performed. Further, in the invention of claim 2, the coil of the data carrier is formed in an annular shape, so that data transmission can be performed by adding it to a livestock such as a cow in a collar shape.

[0012]

1 is a block diagram showing the configuration of an identification system according to an embodiment of the present invention. In the figure, the identification system is connected to a card-shaped data carrier 11 for holding data such as the weight of livestock, a read / write antenna 12 for writing / reading data to / from the data carrier 11, and an operation connected to the read / write antenna 12. An ID controller 13, which is an identification device for controlling the, is provided. ID
The controller 13 is connected to the host computer 14.

As shown in the block diagram of FIG. 2, the ID controller 13 is a microprocessor (CP) that controls writing and reading of data to and from the data carrier 11.
U) 21 and a memory 22 for holding its system program and data are provided, and an input / output interface 23 for performing input / output with the host computer 14 is provided. Further, the ID controller 13 has a modulation circuit 24 which receives an output from the CPU 21 and modulates the data to be transmitted to the data carrier 11, and a transmission section 25 which is driven by the output. The transmission unit 25 is, for example, a coil to FS
Data is transmitted to the data carrier 11 by outputting a K-modulated signal. The received signal obtained from the data carrier 11 is given to the demodulation circuit 27 via the receiving unit 26. The demodulation circuit 27 demodulates this signal and gives it to the CPU 21. And the transmitter 25
The coils L1 and L2 forming the read / write antenna 12 are attached to the receiver 26, respectively.

Next, the structure of the data carrier 11 will be described with reference to FIG. In FIG. 3, the transmitting / receiving unit 31
Has an antenna coil L3, receives and transmits a signal of a frequency emitted from the read / write antenna 12, and its reception output is given to the demodulation circuit 32. The demodulation circuit 32 demodulates this signal, converts the data into the original signal, and gives it to the control unit 33. A memory 34 is connected to the control unit 33 via a bus. The control unit 33 writes or reads data in the memory according to the command and data given from the ID controller 13. Then, the data read from the memory 34 is converted into a serial signal and given to the transmission / reception unit 31 via the modulation circuit 35. The transmission / reception unit 31 gives a signal to the side of the read / write antenna 12 by changing the resonance frequency of the resonance circuit, for example.

FIG. 4 is a perspective view showing an example of the read / write antenna 12. As shown in the present embodiment, the antenna coil 12 uses a multi-core cable that is fixed to one surface of the flat plate 27 in an annular shape and uses a transmission coil L1 and a reception coil L.
2 is configured. This coil is a plate 27 that is a base member.
The spool pins are hit at each of the four end portions, and the multi-core cables 41 and 42 are wound around the spool pins and arranged in an annular shape. The transmission coil L1 uses a two-core cable 41, and is configured such that only one end of each cable is connected and the other end is connected to the transmitter 25, respectively. Similarly, the receiving coil L2 is also connected to the core wire of the other end by using the cable 42 of, for example, five cores, and shifting the core wires from each other between the opposite ends. Then, only both ends thereof are connected to the receiving unit 26. By doing so, the labor of winding the coil wire by several turns is greatly reduced, and the assembling workability can be improved.
In particular, the larger the coil size, the greater the effect. Further, since the existing multi-core cable wire is used, the coil assembling strength can be increased, and the winding machine, the assembling machine jig, etc. are not required, so that the manufacturing cost can be reduced.

Further, in FIG. 4, two multi-core cables 41, 42 are provided.
However, as shown in the front view of FIG. 5, one multi-core cable 43 can be used and any winding thereof can be used as the transmission coil L1 and the reception coil L2.

In FIG. 1, the flat plate 27 is arranged in a door-like manner so that it can be freely opened and closed in the passage of livestock such as cows, and the data carrier 11 is attached to the ears of the cow.
Is attached. In this way, if a weight scale is placed immediately before this door, the weight of the cow when it passes can be measured and the measured weight can be written in the data carrier 11. In this case, the flat plate 27 forming the door rotates with the passage of the cow. At this time, there is a moment when the coil L3 of the data carrier and the coils L1 and L2 of the door 27 become parallel to each other. It can be performed.

FIG. 6 is a diagram showing an example of a coil used for this data carrier. In the figure, a multi-core cable 44 is used for the coil L3 of the data carrier. A connector 45a is connected to an end of the multi-core cable 44, and a connector 45b connected to the connector 45a is mounted on the circuit board 46. Similar to the coil shown in FIGS. 4 and 5, the connector 45b is displaced from the core wire of the connector 45a except for both ends and is connected, and the core wires at both ends are connected to the transmitting / receiving unit 31. Then, another electronic circuit portion of the data carrier is mounted on the circuit board 46. In this way, a data carrier having a coil with an arbitrary diameter can be realized by using the multi-core cable 44. If the antenna coil L3 of the data carrier 11 is attached to the cow's neck as a collar, the area of the coil is increased and the attachment becomes easy.

Next, another embodiment of the present invention will be described. FIG. 7 uses a flat cable as a coil of this writing / reading control device. In this case, the flat cable 52 is embedded in an annular shape in the flexible vinyl chloride sheet 51 or the like which is the base member. Also in this case, the core wires of the end portions of the flat cable 52 that face each other can be connected to the core wires that are adjacent to each other to form the transmitter coil L1 and the receiver coil L2. In this way, the read / write antenna 12B having a flexible structure can be configured together with the vinyl chloride sheet 51.

FIG. 8 shows a read / write antenna 12 constructed by embedding a multi-core flat cable on a flexible sheet.
It is a figure which shows the use condition of A. In this figure, this antenna coil is attached to a passage through which cattle or the like pass in a manner like a hot-spot. The ID controller 13 is connected to the read / write antenna 12A as in FIG. The ID controller 13 is the same as that shown in FIG. 3, and is for transmitting and receiving data via the read / write antenna 12A of the well screen type. Then, for example, a tag type data carrier is attached to the ear of the cow, or the collar type data carrier 1 described above is attached.
Connect 1. Then, when the cow passes through the goodwill antenna, there is a time during which the coil of the data carrier 11 and the flat cable 52 are parallel to each other, so that data transmission can be performed during this time.

[0021]

As described in detail above, according to the present invention,
Since the multi-core cable is used even when the read / write antenna is configured by using a large coil, it is not necessary to wind the coil wire several times by hand, and the configuration can be easily configured. Further, since the multi-core cable is arranged on the base member configured to be openable and closable, data transmission can be reliably performed when livestock and the like pass by. Furthermore, by using this antenna as a flexible antenna, it is possible to construct an identification system suitable for use in livestock and the like. Further, by using a collar type antenna as a data carrier to be attached to livestock, a coil having a relatively large shape can be freely attached and detached, and it is possible to easily attach the coil to the neck of a cow or the like.

[Brief description of drawings]

1 is a front view and an elevation view showing a livestock identification system using a read / write antenna composed of a multi-core cable according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of an ID controller according to the present embodiment.

FIG. 3 is a block diagram showing a configuration of a data carrier according to the present embodiment.

FIG. 4 is a perspective view showing a configuration of a read / write antenna according to the present embodiment.

FIG. 5 is a front view showing a read / write antenna according to another embodiment of the present invention.

FIG. 6 is a perspective view showing a data carrier and its antenna used in this embodiment.

FIG. 7 is a front view showing a read / write antenna according to another embodiment of the present invention.

FIG. 8 is a diagram showing an overall configuration of an identification system using a goodwill antenna according to another embodiment of the present invention.

FIG. 9 is a diagram showing a relationship between a read / write antenna and an antenna of a data carrier and a reception area in a conventional identification system.

[Explanation of symbols]

 11 data carrier 12, 12A read / write antenna 13 ID controller 14 computer 27 flat plate 41-44 multi-core cable 45a, 45b connector 51 vinyl chloride sheet 52 flat cable L1 transmitting coil L2 receiving coil L3 antenna coil

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location A01K 29/00 (72) Inventor Akiki Ichinose 10 Hanazono Todocho, Ukyo-ku, Kyoto Prefecture Kyoto Omron shares In the company

Claims (3)

[Claims] 1. An identification system comprising a data carrier having a coil and an identification device, and performing data transmission by electromagnetic coupling through the respective coils, wherein the coil of the identification device is a flat base member that is openably and closably attached. And a multi-core cable is annularly arranged on one surface of the base member, and the core wires are displaced from each other between opposite ends of the multi-core cable and connected to the core wire of the other end. A coil used in an identification system characterized by the following. 2. An identification system comprising a data carrier and an identification device each having a coil, wherein data transmission is performed by electromagnetic coupling through the respective coils, wherein the coil of the data carrier has a multi-core cable in an annular shape, and the coils face each other. A coil used in an identification system, which includes a coil formed by shifting the core wires from one end to another and connecting the core wires to the other end. 3. An identification system comprising a data carrier each having a coil and an identification device, wherein the identification device performs data transmission by electromagnetic coupling via each coil, wherein the identification device is a flat base member that is openably and closably mounted. A coil formed by arranging a multi-core cable in an annular shape on one surface of the base member, and shifting the cores of the multi-core cable between mutually opposing ends to connect to the core of the other end. The data carrier includes an annular coil formed by connecting the cores of the multi-core cable to the cores of the other end by displacing the cores between the opposite ends of the multi-core cable, and the livestock data An identification system characterized by being retained.