JPH065235U - Contactless data carrier - Google Patents

Abstract

(57) [Abstract] [Purpose] With regard to a non-contact data carrier mounted on an object and used outdoors, an object thereof is to endure outdoor use with a non-metallic material which is inexpensive in cost. [Structure] A circuit unit including a coil is sealed with an insulating member, and the periphery of the package is fixed with concrete, asphalt, or FRP containing an iron core to form a predetermined block shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a contactless data carrier mounted on an object and used outdoors.

[0002]

[Prior art]

 Conventionally, an alternating magnetic field having a relatively low frequency of several tens KHz to several MHz is used as a medium for communication or communication and power transfer, and reading and writing of memory can be performed in a non-contact manner at intervals of several mm to several tens of cm. Contact data carriers have been announced (JP-A-1-184781, etc.).

In a management system using such a non-contact data carrier, the non-contact data carrier is attached to an appropriate member to be managed, and an induction coil is used to read or write data from the non-contact data carrier. Use the reader / writer provided. By the way, in order to extend the communication distance of the non-contact data carrier, it is necessary to enlarge the coil in the non-contact data carrier. Here, the contactless data carrier is made as a package in which a coil and electronic circuits such as a memory and a memory controller are sealed with resin. Therefore, the larger the coil, the larger the size of the entire data carrier.

[0004]

[Problems to be solved by the device]

 However, as the data carrier becomes larger as the coil becomes larger, it is necessary to keep the data carrier away from the surrounding metal more than ever before in order to eliminate the influence of the surrounding metal. As the size increases, the material cost also increases, and a huge number of data carriers are required to attach a data carrier to each target object in the entire management system, which significantly increases the overall cost.

Further, when the resin is molded with the environment-resistant resin including the mounting tool for outdoor use, there is a problem that the amount of the resin used increases and the cost increases. The present invention has been made in view of such conventional problems, and an object thereof is to provide a non-contact data carrier having a structure that can be used outdoors even with a non-metallic material which is inexpensive in cost. .

[0006]

[Means for Solving the Problems]

 In order to achieve this object, the present invention is configured as follows. First, the present invention provides a non-contact data carrier which is a package in which a circuit unit including at least a coil for electromagnetic inductive coupling, a memory, and a memory controller that only reads or writes the memory is sealed with an insulating member. set to target.

In the present invention, such a non-contact data carrier is characterized in that the periphery of a package in which a circuit unit including a coil is insulated and sealed is fixed with concrete to have a predetermined block shape. Further, in the present invention, the periphery of the package may be hardened with asphalt or rubber to form a predetermined block shape.

Here, at least one place of the block hardened with concrete or asphalt may be provided with a hole, or a notch may be provided on the bottom surface of the block to be attached to the object so that it can be used when the data carrier is removed from the object. Further, the non-contact data carrier of the present invention is characterized in that a package in which a circuit unit including a coil is insulated and sealed is embedded and solidified in a sleeper type concrete block used for laying rails.

Further, in the non-contact data carrier of the present invention, the package in which the circuit unit including the coil is insulated and sealed is embedded and solidified in the sleeper type block using the reinforced plastic with the iron core used for laying the rail. Is characterized by.

[0010]

[Action]

 According to the non-contact data carrier of the present invention having such a configuration, since it is solidified with concrete or asphalt, the material cost is low even if the coil is large, and because it is non-metallic, it is The metal can be sufficiently separated, and the electromagnetic coupling between the data carrier coil and the reader / writer front end coil is not affected.

[0011]

【Example】

 1 is a block diagram of an embodiment showing an embodiment of the contactless data carrier of the present invention. In FIG. 1, reference numeral 1 denotes a data carrier package, and in this embodiment, it is formed in a disk shape by sealing an electronic circuit including a coil by resin molding, as will be made clear later. . In this embodiment, the data carrier package 1 is embedded in a concrete block 2 formed by solidifying the surroundings with concrete.

FIG. 2 is a cross-sectional view of FIG. 1, in which the bottom surface 3 of the concrete block 2 serves as a mounting surface for an object, and the upper portion of the concrete block 2 serves as a data reading / writing side. The carrier package 1 is embedded near the upper surface of the concrete block 2. The distance d between the surface of the block and the data carrier package 1 gives the minimum non-contact communication distance when reading and writing data using the front end of the reader / writer which will be made clear later.

Further, the concrete material forming the concrete block 2 is extremely low in cost, and the material cost is hardly affected even if the data carrier package 1 becomes large due to the increase in size of the coil. Further, since the concrete block 2 is a non-metal, it does not affect the electromagnetic coupling between the data carrier package 1 and the external reader / writer coil, and the size of the concrete block 2 protects the surrounding metal. Since it can be kept away from the data carrier package 1, the influence on the electromagnetic coupling due to the writing and reading coils can be prevented in this respect as well.

Further, the concrete block 2 has an order of magnitude less expensive than resin, and has extremely high environmental resistance when used outdoors, so that the data carrier package 1 embedded inside should be protected securely. You can Of course, the concrete block 2 contains a certain amount of water, but since the data carrier package 1 itself seals the coil and its electronic circuit with resin, the concrete block 2 itself does not. It is completely unaffected by moisture.

FIG. 3 is a circuit block diagram showing a coil and a circuit unit built in the data carrier package 1 of FIG. 1 together with a reader / writer. In FIG. 3, the reader / writer 10 includes an MPU (microprocessor) 11, a conversion circuit 12, and a demodulation circuit 15. A front end 16 is provided to the reader / writer 10 by signal line connection. The front end 16 is provided with a front end transmission coil 13 and a front end reception coil 14.

The MPU 11 performs writing and reading operations with respect to the memory built in the non-contact data carrier 20 based on the support from the host device. The modulation circuit 12 FSK-modulates various commands and write data transmitted from the MPU 10 to the non-contact data carrier 20, and supplies them to the front-end transmission coil 13. The demodulation circuit 15 demodulates the data bits from the reception signal of the front end reception coil 14 of the read data sent from the non-contact data carrier 20 and supplies it to the MPU 11.

The contactless data carrier 20 is provided with a reception coil 21, a power supply circuit 22, a demodulation circuit 23, a memory controller 24, a non-volatile memory 25, a modulation circuit 26 and a transmission coil 27. The power supply circuit 22 rectifies the signal voltage induced in the reception coil 21 by the electromagnetic induction coupling from the front end transmission coil 13 when the front end 16 of the reader / writer 10 is brought close to it, and creates a power supply voltage for each part. The demodulation circuit 23 demodulates data bits from the received signal from the reader / writer 10. The memory controller 24 decodes the demodulated data from the demodulation circuit 23, reads the data from the specified address of the non-volatile memory 25 if the command is a read command, and writes the data to the specified address of the non-volatile memory 25 if the command is a write command. Write.

As the non-volatile memory 25, for example, an E ² PROM or the like is used. The modulation circuit 26 modulates the data bit of the read data read from the non-volatile memory 25 by the memory controller 24 and supplies it to the transmission coil 27. The circuit configuration of the contactless data carrier 20 shown in FIG. 3 is the most basic one, and detailed circuit configurations are disclosed in, for example, JP-A-1-184781, 2-63349, and 2-894231. As a memory module.

The contactless data carrier 20 of FIG. 20 has been described by way of an example in which both reading and writing of the memory can be performed, but a read-only data carrier may be used. FIG. 4 is a block diagram of an embodiment showing another embodiment of the present invention. In this embodiment, a notch groove 4 is provided in a block bottom surface 3 of a concrete block 2 in which a data carrier package 1 is hardened with concrete. It is characterized by that.

When the cutout groove 4 is provided on the bottom surface 3 of the block as described above, for example, when the concrete block 2 in which the data carrier package 1 is embedded is used by being adhesively fixed to the object 5, the cutout groove 4 is formed if necessary. The data carrier attached by adhesion can be easily removed by passing a stick or the like through 4. Of course, instead of providing the notch groove 4 on the bottom surface 3 of the block, a through hole or a blind hole may be provided on the side surface of the concrete block 2. Of course, the through holes and blind holes are located outside the data carrier package 1 embedded in the inside.

Further, as another embodiment of the present invention, instead of the concrete block 2 shown in FIG. 1 and FIG. 4, the periphery of the data carrier package 1 is hardened with asphalt, rubber or the like to obtain an asphalt block or rubber. It may be a block. In addition, the data carrier of the present invention may be attached to the concrete block bottom surface 3 on the object, but by digging a groove into which the concrete block 2 can be fitted on the object side, the concrete block can be fitted in this groove. You may push in 2 and fix it.

Further, in the above-mentioned embodiment, since the data carrier package 1 is disk-shaped, the concrete block 2 whose periphery is hardened is also cylindrical, but the shape of the concrete block 2 may be cubic or long as required. The shape may be an appropriate shape such as a cube, a trapezoidal cone, or a trapezoidal pyramid. Similarly, the data carrier package 1 is not limited to the disc shape, and may have an appropriate shape such as a rectangle or an ellipse.

FIG. 5 is a block diagram of an embodiment showing another embodiment of the present invention, in which a data carrier package 1 is embedded and solidified in a sleeper type concrete block 7 used when laying the rail 6. It is characterized by The data carrier package 1 is embedded in a corner of a sleeper concrete block 7 close to the upper portion of a data carrier housing 8 formed in a box shape so that the coil surface faces upward.

In this way, the memory of the data carrier package 1 embedded and fixed in the sleeper-type concrete block 7 stores the information regarding the maintenance and management of the line. FIG. 6 is a block diagram of an embodiment showing another embodiment of the present invention. As a sleeper used when laying the rail 6, glass fiber or fiber reinforced plastic (FRP) is used. The sleeper-shaped block 9 is formed, and the iron core 9-1 is inserted in order to further secure the strength, and the data carrier package 1 is embedded and hardened in the sleeper-shaped block 9 made of FPR with the iron core. It is a feature.

Also in this case, the data carrier package 1 is embedded in the corner of the sleeper-shaped block 9 close to the upper part of the data carrier storage portion 8 formed in a box shape so that the coil surface faces upward, and Stores information related to maintenance management of. The concrete block 2 shown in FIGS. 1, 2 and 4 may be molded using reinforced plastic (FRP) as in the case of FIG. 6, and an iron core may be inserted if strength is required. .

[0026]

[Effect of device]

 As described above, according to the present invention, it is possible to significantly reduce the material cost for the mounting structure of the non-contact data carrier used outdoors, and to realize sufficient environmental resistance. The safety when transporting can be guaranteed. Furthermore, since many objects to which the data carrier is attached and used outdoors are concrete structures, when the concrete is hardened with concrete, concrete is bonded to each other, and the data carrier can be easily bonded to the object.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a sectional view of FIG.

FIG. 3 is a circuit block diagram of a data carrier of the present invention and a reader / writer used for reading and writing the data carrier.

FIG. 4 is a block diagram of an embodiment showing another embodiment of the present invention.

FIG. 5 is a configuration diagram of an embodiment showing an embodiment of the present invention related to a sleeper type

FIG. 6 is a structural diagram of an embodiment showing another embodiment of the present invention related to a sleeper type

[Explanation of symbols]

 1: Data carrier package 2: Concrete block 3: Block bottom surface 4: Notch groove 5: Object 6: Rail 7: Sleeper type concrete block 8: Data carrier storage section 9: Sleeper type block (FPR with iron core) 9- 1: Iron core 10: Reader / writer 11: Microprocessor (MPU) 12, 26: Modulation circuit 13: Front end transmission coil 14: Front end reception coil 15, 23: Demodulation circuit 16: Front end 20: Non-contact data carrier 21 : Reception coil 22: power supply circuit 24: memory controller 25: non-volatile memory 27: transmission coil

Claims (5)

[Scope of utility model registration request] 1. A non-contact data carrier in which a circuit unit having at least a coil for electromagnetic inductive coupling, a memory, and a memory controller for only reading or writing / reading the memory is sealed with an insulating member to form a package. A non-contact data carrier, characterized in that the periphery of the package is hardened with concrete to form a predetermined block shape. 2. A non-contact data carrier in which a circuit unit including at least a coil for electromagnetic induction coupling, a memory, and a memory controller for only reading or writing the memory is sealed with an insulating member to form a package. A non-contact data carrier characterized in that the periphery of the package is fixed with asphalt or rubber to form a predetermined block shape. 3. The contactless data carrier according to claim 1, wherein at least one position of the block is perforated or a notch is provided on the bottom surface of the block to be attached to an object. Contact data carrier. 4. A non-contact data carrier in which a circuit unit including at least a coil for electromagnetic inductive coupling, a memory, and a memory controller for only reading or writing / reading the memory is sealed with an insulating member to form a package. A non-contact data carrier, wherein the package is embedded and solidified in a sleeper type concrete block used for laying rails. 5. A non-contact data carrier in which a circuit unit including at least a coil for electromagnetic inductive coupling, a memory, and a memory controller for only reading or writing and reading the memory is sealed with an insulating member to form a package. A non-contact data carrier, characterized in that the package is embedded and solidified in a sleeper type block made of a reinforced plastic containing an iron core used for laying rails.