KR100829797B1 - System and method for recording information on rfid tag - Google Patents

Abstract

A system and a method for writing information on RFID(Radio Frequency Identification) tags are provided to write information on a card type RFID tag and automatically verify and classify written information to process a large number of tags rapidly and stably. A system for writing information on an RFID tag includes a memory(110), a writer(30), a reader(30'), a controller(50), an antenna(31), a first sensor(60), a second sensor(170) and a third sensor(15). The memory stores information to be written on the RFID tag. The writer writes the information read from the memory on the RFID tag. The reader reads the information written on the RFID tag. The controller compares the information written by the writer with the information read by the reader to check whether the written information corresponds to the read information and determines whether the information is normally written. The third sensor senses the height of loaded RFID tags when the tags are loaded.

Description

System and method for recording information on RFID tag

1 is a block diagram showing the configuration of an information recording system according to an embodiment of the present invention.

2 is a flowchart showing an information recording process according to an embodiment of the present invention.

Figure 3 shows an example of the device implementation of the information recording system according to the present invention.

4 shows a perspective view of the main part of the device of FIG. 3;

5 is a rear side perspective view of the device of FIG.

FIG. 6 is a partial side view of the apparatus of FIG. 3, showing the feeder and the belt conveyor. FIG.

7 is a perspective view of the belt conveyor of the device of FIG.

8 and 9 are some side views of the apparatus of FIG. 3, showing a portion of the belt conveyor and the chute.

10 and 11 illustrate a state in which each component of the RFID tag in which information is recorded is combined with the disassembled state.

The present invention relates to an information recording system and method for recording information on an RFID tag, and more particularly, to an information recording system and method capable of automatically recording information on a card type RFID tag applicable to a metallic object. .

RFID (Radio Frequency Identification) is a non-contact recognition system that attaches a small tag to various items and transmits and processes the information of the object and the surrounding environment at radio frequency. It is widely used in information tracking and public transportation fare payment systems.

The RFID system includes an RFID tag attached to an object to be recognized while predetermined information is recorded, and a reader that recognizes information of the tag from the outside. The reader has a relatively large antenna (external antenna) to transmit and receive radio frequency toward the tag, and the tag receives the radio frequency from the reader through a relatively small antenna (internal antenna) and receives the magnetic energy formed to output identification data. . To this end, the tag consists of an internal antenna, a chip containing a modulator, a controller and a memory.

As described above, since the RFID system transmits and receives information between the reader and the tag by using a radio frequency or an induction magnetic field, the recognition rate of the data is significantly reduced due to the characteristic of the metal surface reflecting electromagnetic waves when attached to the surface of the metal body. There was a problem. This is due to the induction current not properly formed by reflecting and scattering the induction magnetic field to be received from the external antenna.

For this reason, as disclosed in Japanese Patent Laid-Open Publication No. 2006-68779 and Utility Model Registration No. 435670, a card type in which an RFID tag and an electromagnetic wave absorber are embedded in a card-type case and applied to a metal surface Tags are being developed.

However, conventionally, when recording information in such a card-type tag, by using a method that the operator writes the information by using a writer (writer) for each tag one by one, there is a problem that the tag cannot be processed quickly in large quantities there was. In particular, in order to apply an RFID system to an automated logistics system of a large quantity of products, such as steel products, development of a recording device capable of automatically and quickly recording information on a plurality of tags is required.

The present invention is devised to solve the above problems, and an object of the present invention is to provide a system and method capable of automatically and quickly recording information in a plurality of tags.

An object of the present invention as described above is an information recording system for recording information on a card-type RFID tag applicable to a metallic object, comprising: a memory for storing information to be recorded on the RFID tag; A recorder for recording the information read out from the memory into the RFID tag; A lead unit for reading information recorded in the RFID tag; And a controller configured to compare whether information recorded through the recorder and information read through the read unit are matched to determine whether information is normally recorded.

An information recording method according to another aspect of the present invention comprises the steps of: detecting that the RFID tag is disposed in the information recording position; Recording information on an RFID tag disposed at the information recording position; Reading the recorded information; Determining whether the read information coincides with the recorded information; And outputting an error generation signal when the read information and the recorded information do not match.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

As shown in FIG. 1, the information recording system according to the present invention includes a memory 110, an antenna 31, a recorder 30, a lead unit 30 ′, a controller 50, and a first sensor unit 60. ), The second sensor unit 170 and the third sensor unit 15 may be configured.

The memory 110 is an element for storing information recorded in each RFID tag. The information stored in the memory 110 is recorded in each RFID tag through the recorder 30 under the control of the controller 50, as described later.

The recorder 30 is a component that performs a function of recording information on an RFID tag. When the information recorded in the RFID tag is stored in the memory 110 and the RFID tag moves to the information recording position, the RFID tag is read out from the memory 110 under the control of the controller 50 and the RFID tag is read through the antenna 31. Will be recorded on

In the present embodiment, the information recording position means a position where the RFID tag is disposed so that the recorder 30 is fixed and the information can be recorded in the best state by the recorder 30. In this case, it is set in advance so that each RFID tag can be sequentially arranged at the information recording position according to the size and appearance of the RFID tag. Accordingly, the information recording system according to the present invention may further include a first sensor unit 60 capable of detecting whether the RFID tag is correctly disposed at the information recording position.

The first sensor unit 60 detects when the RFID tag is out of the optimal information recording position previously input by using a photosensor, for example, so that the position of the RFID tag is incorrect. When the controller 50 receives information from the first sensor unit 60 that the RFID tag to which the information is to be recorded is out of the information recording position, the controller 50 may output an error signal so that the administrator can recognize the information.

On the other hand, in one embodiment of the present invention, if one side of the RFID tag is assumed to be a metal surface and the other side is a non-metal surface, information recording to the RFID tag is to be recorded through the non-metal surface. This is because the metal surface reflects an electromagnetic wave signal for recording information, and thus has a characteristic that information recording is difficult to be normally performed.

10 is an exploded view of an RFID tag in which information is recorded, one of the upper surface 210 and the lower surface 220 is made of a metal material, and the other side is made of a nonmetal material (eg, a synthetic resin). Inside there is a chip 205 for storing information. FIG. 11 is a view illustrating an RFID tag combining the disassembled elements of FIG. 10. When information is recorded by wireless communication in the RFID tag configured as described above, an information signal is transmitted to the chip 205 through a non-metal surface. To help.

Accordingly, the information recording system according to an embodiment of the present invention, the second of the upper surface 210 and the lower surface 220 of the RFID tag disposed at the information recording position which can detect whether the metal surface The sensor unit 170 may further include.

If the RFID tag is disposed such that the upper surface 210 is a non-metal surface, the recorder 30 controls to record information through the upper surface 210, and the RFID tag is disposed such that the lower surface 220 is a non-metal surface. If is disposed, the recorder 30 controls to record the information through the lower surface (220).

The lead unit 30 ′ performs a function of reading information recorded in the RFID tag by the recorder 30. The controller 50 compares the information read by the lead unit 30 'with the information recorded by the recorder 30 and compares the information. When the information read by the lead unit 30 'and the information recorded by the recorder 30 coincide with each other, it is determined that the information is normally recorded in the RFID tag. On the other hand, if the information read by the lead unit 30 'and the information recorded by the recorder 30 do not coincide with each other, it is determined that the recording is not normally performed, and the RFID tag is processed in a bad manner.

On the other hand, the lead portion 30 'is functionally separated from the recorder 30, but can be implemented as one device in the actual device implementation, in this case, the device sequentially performs the recording process and the reading process for each RFID tag. Can be configured to do so.

As described above, the controller 50 generally controls the process of recording information in the RFID tag, and also performs a function of determining whether or not the information is recorded without error in the RFID tag.

The third sensor unit 15 performs a function of sensing the loaded height when the RFID tag for recording the information is loaded. The controller 50 may measure the number of RFID tags loaded through the loading height of the RFID tag detected by the third sensor unit 15.

An information recording process according to the information recording system of the present invention having the above configuration will be described in detail with reference to FIG.

First, when the RFID tag required for information recording is loaded, the height of the loaded RFID tag is sensed through the third sensor unit 15 to determine the number of RFID tags (S10). Then, information to be recorded in each RFID tag is sequentially read from the memory 110 for each RFID tag unit or at once (S20).

When each RFID tag is sequentially disposed at the information recording position, the recorder 30 records the information in the RFID tag disposed at the information recording position.

The process of recording information in the RFID tag will be described in more detail as follows. When the RFID tag is disposed at the information recording position, it may be configured to determine whether the RFID tag is correctly disposed at the information recording position through the first sensor unit 60 (S22).

As a result of the determination in S22, when it is detected that the RFID tag is not correctly placed, an error signal is output (S24) so that the manager can recognize it. On the other hand, if it is determined in S22 that the RFID tag is disposed at the correct position, it may be configured to determine whether one of the upper and lower surfaces of the disposed RFID tag is a metal surface (S26). . However, when the RFID tag is loaded uniformly on either side of the metal surface and the non-metal surface, the S26 process may not be performed. According to the determination result of S26, the recorder 30 records the information through the non-metal surface of the RFID tag (S30).

After the information recording (S30), the lead unit 30 'reads the recorded information from the RFID tag (S40). Then, the controller 50 determines whether or not the information recorded in the RFID tag in S30 and the information read in S40 for the same RFID tag (S50). As a result of the determination in S50, when the information recorded in S30 and the information read in S40 for the same RFID tag match, it is determined that the information is recorded normally, and the recording process is completed, and the steps S22 to S50 are performed for the next RFID tag. Repeat.

On the other hand, if the result of the determination in S50 and the information recorded in S30 and the information read in S40 for the same RFID tag do not match, it is determined that there is an error in the information recording and an error occurrence signal is output (S60).

To aid the understanding of the present invention, examples of the device implementation of the above-described information recording system according to the present invention are shown in Figs. The apparatus shown in Figs. 3 to 9 includes various components not included in the information recording system described above, but these are merely shown for reference of the invention and are not intended to limit the technical spirit of the present invention. .

That is, the information recording system represented by the block diagram of FIG. 1 is implemented as a more specific device, and the device shown in FIGS. 3 to 9 is implemented as another form distinct from the form illustrated in FIGS. 3 to 9. It is possible.

Meanwhile, for convenience of description, the same reference numerals are used for components that perform the same functions as the components of the system of FIG. 1 to 9 in the components of FIGS. 3 to 9.

The configuration of the apparatus of FIGS. 3 to 9 will be described in detail as follows.

The information recording apparatus shown in Figs. 3 and 4 carries out a supply table 10 for loading a plurality of card-type RFID tags 1 to which information is to be recorded, and a tag 1 from the supply table 10 one by one. A belt conveyor 20 for transferring to an information recording position, a recorder 30 installed on the tag 1 conveying path on the belt conveyor 20 to record information on the tag 1 and verifying the information; A chute 40 installed at a downstream side of the belt conveyor 20 to classify the tag 1 according to whether there is a defect, and a touch screen controller 50 for controlling the operation of the components. Equipped. In FIG. 3, reference numeral 70 denotes a lamp 70 for indicating an operating state of the information recording apparatus.

The supply table 10 has an inner space extending up and down while having the same width as that of the tag 1 so that the tags 1 are stacked in a row. The upper end and the lower end of the supply table 10 are opened, the tag 1 is received through the open upper end, and is carried out through the open lower end. The movement of the tag 1 in the feed table 10 is achieved by free fall motion.

On the other hand, as shown in Figure 5, the back of the supply table 10 is provided with a sensor 15 for detecting the amount of the tag 1 loaded. The sensor 15 indicates to the worker through the lamp 70 when the amount of the loaded tag 1 is reduced to some extent, so that the worker can replenish the tag 1 to the supply table 10. In addition, according to the number of tags 1 detected by the sensor 15, the controller 50 may read information to be recorded in each tag 1 from the memory 110.

As shown in FIG. 6, the belt conveyor 20 is positioned at the lower end of the supply stand 10, and the tag 1 is seated on the belt conveyor 20 through the lower end of the supply stand 10. In accordance with the drive of the conveyor 20, it is transferred to the information recording position A. In this way, when one tag 1 is taken out from the lower end of the supply table 10 by the belt conveyor 20, the tag 1 located thereon falls freely and is positioned on the belt conveyor 20. By repeating this operation, the tags 1 are taken out one by one at a predetermined interval.

As shown in FIG. 7, the belt conveyor 20 includes a pair of pulleys 21 and 22, a timing belt 24 wound around the pulleys 21 and 22, and a pair of pulleys 21 and 22. It is composed of a transfer motor 26 coupled to one of the pulley 22 of the 22 to drive the rotation.

Receiving grooves 24a for accommodating the tag 1 are formed on the upper surface of the timing belt 24 at predetermined intervals. The interval between the receiving grooves 24a is set by the distance from the supply table 10 to the information recording position A. FIG. The transfer motor 26 is a timing belt with a pitch between the receiving grooves 24a, that is, the distance L at which the tag 1 is taken out of the supply table 10 and moved to the information recording position A. It is controlled to drive 24 by one pitch. That is, as shown in FIG. 6, when the tag 1 at the lower end of the supply table 10 is seated in the receiving groove 24a of the timing belt 24 positioned below the timing belt 24, the timing belt 24 is transferred to the transfer motor 26. Is driven by one pitch to transfer the tag 1 to the information recording position (A). At this time, the next receiving groove 24a of the timing belt 24 is positioned at the lower end of the supply table 10, whereby the next tag 1 is seated in the receiving groove 24a and is in a transport standby state.

4 and 6 again, the recorder 30 is composed of a main body (not shown) and an antenna 31, and the antenna 31 is located from the top surface of the timing belt 24 at the information recording position A. FIG. It is spaced apart by a predetermined interval. Although not specifically illustrated in the drawing, the main body of the recorder 30 may be installed on the side of the information recording apparatus of FIG. 4 and connected to the antenna 31 through a cable.

The recorder 30 records information in the tag 1 via the antenna 31. In addition, a read function for reading recorded information may be implemented in one recorder 30 device. In this case, when the tag 1 is transferred to the information recording position A, the recorder 30 records predetermined necessary information on the tag 1 through the antenna 31, and checks whether the information recording is in error. Read back the recorded information from (1).

On the other hand, as shown in Fig. 4, on both sides of the antenna 31, sensors 60 for inspecting whether the tag 1 is at the information recording position A are provided. As the sensor, for example, a photo sensor may be used. In this case, the light emitting part 61 and the light receiving part 62 of the photosensor 60 may be configured to be positioned at the left and right of the information recording position A, respectively. . When the tag 1 enters the information recording position A under the antenna 31, light is blocked from the light emitting part 61 to the light receiving part 62, whereby the presence or absence of the position of the tag 1 is detected.

In addition, although not shown in FIG. 4, the information recording apparatus of FIG. 4 may further include a sensor capable of detecting a metal surface of the RFID tag. That is, by determining whether one of the upper and lower surfaces of the RFID tag is a metal surface and which surface is a non-metal surface, information may be recorded through the non-metal surface (see FIG. 10).

The chute 40 is installed on the downstream side of the belt conveyor 20 so as to be able to rotate up and down. The chute 40 is selectively rotated up and down by the chute drive motor 41 to classify the tag 1 according to the presence or absence of information recording failure. On the downstream side of the chute 40, a carry-out table 42 is installed so that the tag 1 with the information properly recorded is loaded, and the tag 1 with the information not properly recorded is loaded below the carry-out table 42. A recovery box 43 is installed.

As illustrated in FIG. 7, an inlet 45 is formed at an upper edge of the recovery box 43 adjacent to the chute 40 downstream. In the steady state, the chute 40 extends toward the unloading table 42 to block the inlet 45 of the recovery box 43. Therefore, the tag 1 which has been determined that there is no information recording error as a result of the verification at the recorder 30 is transferred from the belt conveyor 20 to the carrying table 42 along the chute 40.

If it is determined that there is an error in the information recording of the tag 1 as a result of the verification in the recorder 30, as shown in Fig. 8, the chute 40 is rotated downward by the chute driving motor 41, and the number of times is recovered. The inlet 45 of the box 43 is opened. Therefore, the tag 1 which is in error is thrown into the recovery box 43. The tag 1 recovered to the collection box 43 is loaded on the supply table 10 again by an operator and subjected to the information recording process again, or discarded when there is a problem with the tag 1 itself.

A series of processes in which information is recorded in the tag 1 is controlled by the controller 50. That is, when the presence of the tag 1 is detected by the optical sensor 60 at the information recording position A, the controller 50 commands the recorder 30 to record the information in the tag 1. do. When the information recording is completed, the controller 50 instructs the recorder 30 to read the information recorded in the tag 1, and verifies whether or not the information is properly recorded.

If it is determined that the information recording is good, the controller 50 controls the transfer motor 26 so that the timing belt 24 is driven by one pitch. At this time, the chute 40 maintains an elevated state as shown in FIG. 7, so that the tag 1 moves to the carrying out table 42. On the contrary, if it is determined that the information recording is bad, the controller 50 controls the chute driving motor 41 to lower the chute 40 as shown in FIG. 8, thereby putting the tag 1 into the collection 43. Be sure to

As described above, according to the information recording system according to the present invention, the information is recorded in the card type RFID tag separately separated, and a series of operations such as verification and classification of the recorded information are automatically performed. The advantage is that information can be recorded quickly and reliably.

In particular, according to the present invention, since a large amount of tags can be processed quickly, there is an advantage that it can be effectively applied to the distribution system of the goods distributed in large quantities, such as steel products.

In the above, certain preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. will be.

Claims (7)

An information recording system for recording information on a card type RFID tag applicable to a metallic object, A memory for storing information to be recorded in the RFID tag; A recorder for recording the information read out from the memory into the RFID tag; A lead unit for reading information recorded in the RFID tag; And And a controller which determines whether the information is normally recorded by comparing the information recorded through the recorder with information read through the lead unit. The information recording system according to claim 1, further comprising a first sensor unit for determining whether the RFID tag is disposed at a position where information can be recorded through the recorder. The RFID tag of claim 1, further comprising a second sensor unit configured to detect a metal surface and a non-metal surface of the RFID tag, wherein the controller is configured to provide information to the RFID tag through a non-metal surface detected by the recorder through the second sensor unit. Information recording system, characterized in that for controlling to record. The RFID sensor of claim 1, further comprising a third sensor unit configured to detect a stacking height of the RFID tag, wherein the controller determines the number of stacked RFID tags based on the stacking height detected by the third sensor unit. And an information corresponding to the number of RFID tags loaded from a memory. An information recording method for recording information on a card type RFID tag applicable to a metallic object, Detecting that the RFID tag is disposed at an information recording position; Recording information on an RFID tag disposed at the information recording position; Reading the recorded information; Determining whether the read information coincides with the recorded information; And outputting an error generation signal when the read information and the recorded information do not match. The method of claim 5, wherein the recording of the information on the RFID tag comprises: Detecting a metal surface and a non-metal surface of the RFID tag; And And recording information on the RFID tag through the sensed non-metal surface. The method of claim 5, wherein Detecting a stack height of the RFID tag; Determining the number of loaded RFID tags according to the sensed stack height; And And reading out the information corresponding to the loaded number from the memory.

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