KR100970347B1 - Self check-out system for materials with rfid tag using two rfid antennas - Google Patents

Abstract

PURPOSE: A self checkout system for materials with RFID tag using two RFID antennas is provided to recognizes RFID tags attached to materials through two antennas of lower side and upper side of space part, thereby increasing the amount of materials which is available for lending at once. CONSTITUTION: One RFID(Radio Frequency Identification System) antenna(104) is mounted on shelf of upper part of a self lending machine(100). An RFID reader transceives data with RFID tag through RFID antenna(108). An RFID tag is attached to a material(106). A computer is connected to the RFID reader. An output of the RFID antenna is set low for communication distance between the RFID tag and the RFID antenna to be below 20cm.

Description

SELF CHECK-OUT SYSTEM FOR MATERIALS WITH RFID TAG USING TWO RFID ANTENNAS}

In the present invention, a library, a library, a rental store (hereinafter referred to as a library), a book with a RFID tag (Radio Frequency Identification tag), a CD, a DVD, and the like (hereinafter referred to as a document) are used by a user such as a librarian or an employee. It is about a self-loan system that allows you to rent or loan on your own without the help of a person.

In general, RFID systems, which include tags (transponders), readers (readers), and antennas (coupling devices), can handle multiple pieces of data at a time simply and quickly, compared to bar code systems that process only one piece of data at a time. There is an advantage that there is an increasing number of cases in which libraries operate a self-loan system with an RFID system.

In the conventional self-lending system of RFID-tagged materials, as illustrated in FIG. 1, a user protrudes toward the upper front of the self-lending machine 10 and includes a shelf on which one RFID antenna 12 is mounted. 14) put on the loaned materials 18 with the RFID tag 16 attached thereto, operate the input and output means 20 of information such as a touch screen display unit, and operate the RFID reader 22 and the network communication equipment. Through the computer 24 connected to the host computer, including the library manager's PC, it was possible to perform the loan processing by the user himself.

However, the radio waves generally used for RFID have limitations in communication between RFID tags and RFID antennas because of interferences caused by materials or environmental conditions that cause noise of radio waves. Especially, radios such as mobile phones and PDAs are limited. There is a problem in that the interference phenomenon occurs more greatly when approaching a device, a wireless computer or a network equipment.

In addition, if the reading range of the RFID antenna is unconditionally increased, other materials attached to the RFID tag held by another user waiting for the order of use of the self-lending machine are being recognized or In other cases, the RFID tag on the table or bookshelf close to the loaner is frequently recognized, causing troubles and confusion in the loan process. In using the 13.56MHz RFID tag, which is about 1.5m, the output of the RFID antenna is set low so that the communication distance between the RFID antenna and the RFID tag is about 20 cm or less for avoiding the obstacles and confusion as described above. Operating and using it within this reduced communication range, Is the actual circumstances.

Therefore, conventionally, for example, when a user wants to borrow 7 books having a thickness of 3 cm, the stacked height of these books reaches 21 cm, which exceeds the limited recognition distance (about 200 mm). In order to borrow a book, the user had to operate the self-loan at least twice repeatedly and had to go through the self-loan process.

In addition, even if the stacked height of the books to be borrowed falls within the reduced recognition distance (about 20 cm), a plurality of RFID tags are concentrated within the recognition distance of one RFID antenna due to the characteristics of radio waves used for RFID. The recognition distance for the entire tag is reduced, especially when stacking a plurality of thin books on a single RFID antenna, the positions of the tags attached to the books overlap or the spacing of the tags becomes tighter. Books stacked on top, far away from one another, were often not recognized correctly.

In addition, there is a difference in recognition distance between a book made of a hard cover made of thick and hard cardboard or cloth or leather, and a book made of a soft cover made of a thin and soft cover.

Therefore, in an environment in which a conventional self-lending machine is actually operated, the books to be borrowed are divided into two or three times even if the accumulated height of books to be borrowed by the user is within the limited recognition distance of the RFID antenna of the self-lending machine. Frequently, self-loan had to be dealt with.

Therefore, the conventional self-lending machine not only causes confusion and inconvenience of the user, but also causes disputes about the lending service between the library and the user who uses the self-lending machine, and raises complaints about the operation reliability of the self-lending machine. There was a problem.

The object of the present invention is to increase the amount of data that can be self-lending at a time compared to the conventional self-lending, while greatly improving the recognition performance and efficiency of the data and the user's convenience by using two RFID antennas with excellent operation reliability The present invention provides a self-lending system for using RFID-tagged materials.

The present invention relates to a self-loaning system of RFID-attached data using two RFID antennas. The present invention relates to RFID tags and data attached to data through a single RFID antenna mounted on a shelf at the top of a self-lending machine. A reader and a reader, the computer connected to the RFID reader and connected to the host computer including the library manager's PC through the network equipment, the computer connected to the computer, the user's member number and ID are entered, and the use of the self-lending machine. In the self-lending system comprising an input and output means of the information, such as a touch screen display unit for guiding the information and showing the self-lending results, the upper portion of the self-lending machine body and the lower wall portion is fixed to the shelf on which the RFID antenna is mounted; And a rear wall portion and an upper wall portion facing the lower wall portion. The user is provided with a loan guide member for providing a space portion to limit the height of the material to be loaned at one time, the upper wall portion is equipped with a second RFID antenna facing the RFID antenna and connected to the RFID reader It is characterized by being.

In addition, the RFID antenna and the second RFID antenna according to the present invention is connected to the RFID reader and the computer through an antenna controller is characterized in that it is possible to control the operation mode of the RFID antennas.

In addition, the computer according to the present invention information of the RFID tags attached to the data to be loaned recognized from the RFID antenna, and information of the RFID tags attached to the material to be loaned recognized from the second RFID antenna In comparison, the software is further provided to delete the duplicated information.

In addition, in the front of the upper wall portion on the upper portion of the space according to the present invention is formed a portion extending inclined in the upward direction, characterized in that the information input and output means is mounted on the extended portion.

The present invention multiplely recognizes RFID tags attached to materials placed in a space part that limits the amount of data that a user can self-loan at a time through two RFID antennas provided at the bottom and the top of the space part, respectively. By making it possible to increase the amount of data that a user can borrow at a time compared to the prior art, it is possible to increase the speed of loan processing, so the efficiency is very excellent, and the accuracy of data recognition, user convenience and operation reliability are very good. There is an advantage.

When described in detail with reference to the accompanying drawings of the present invention.

Figure 2 is a side view of the self-lending system according to the present invention, Figure 3 is a schematic diagram of the self-lending system according to the present invention.

The present invention provides an RFID tag attached to the material 106 through one RFID antenna 104 mounted on the shelf 102 on the upper portion of the self-lending machine body 100 as illustrated in FIGS. 108, a computer 112 connected to the RFID reader 110 that exchanges data with the RFID reader 110, and a main computer including a library manager's PC through a network device, and the computer 112. It is connected to the RFID tag 108 and the input and output means 114 of the information, such as a touch screen display unit which is connected to the user's membership number and ID, guides the use of the self-lending machine and shows the self-loaning results. In a self-lending system of an RFID tag attached material in which the output of the RFID antenna 104 is set low so that the communication distance between the RFID antennas 104 is 20 cm or less,

The lower wall portion 116 to which the shelf 102 on which the one RFID antenna 104 is mounted is fixed to the upper portion of the self-lending unit body 100, the rear wall portion 118 having a predetermined height, and the lower wall portion. Consists of the upper wall portion 120 facing the 116 is provided with a loan guide member 124 to provide a space portion 122 to limit the height of the user piles the materials 106 to be loaned at once, The second RFID antenna 126 facing the RFID antenna 104 on the upper wall portion 120 of the loan guide member 124 and setting the output low so that the communication distance with the RFID tag 108 is 20 cm or less. And the RFID antenna 104 and the second RFID antenna 126 are connected to the RFID reader 110 and the computer 112 through the antenna controller 128 to provide the two RFID antennas 104 and 126. The operating mode of simultaneous operation mode or sequential operation mode Alternatively, the simultaneous operation mode and the sequential operation mode can be controlled in parallel, and the hard disk of the computer 112 controls the operation of the antenna controller 128 and is recognized from the RFID antenna 104. The information of the RFID tags 108 attached to the materials 106 to be loaned and the information of the RFID tags 108 attached to the materials 106 to be loaned recognized from the second RFID antenna 126 are displayed. In addition, software for deleting duplicated information is further included.

And in front of the upper wall portion 120 on the upper side of the space portion 122 to which the material 106 that the user wants to borrow is pushed is formed an inclined upwardly extending portion 130, The part 130 is equipped with the input and output means 114 of the information so that the input and output means 114 of the information is not covered by the materials 106 that the user wants to borrow, It allows the user to access the input and output means 114 of the information more closely, so that the user can perform the self-lending process while operating the input and output means 114 of the information more conveniently. .

The present invention applies a RFID tag having a frequency band of 13.56 MHz, which is generally applied in a library, and allows a user to borrow at a height at which the materials 106 attached to the RFID tag 108 to be borrowed are stacked. The spacing d between the RFID antenna 104 and the second RFID antenna 126 in the space portion 122 that limits the amount of material 106 is applied to a self-lending machine using one RFID antenna in a conventional library. Based on the limited recognition distance (ℓ: about 20㎝), it is possible to satisfy the following equation.

                         ℓ ≤ d ≤ 2ℓ

Therefore, the self-lending system according to the present invention can increase the amount of data that can be loaned at a time about twice as compared with the conventional one, which can greatly improve the efficiency of the self-financing process and user convenience, and receive loans at once. The RFID tags 108 attached to the materials 106 placed in the space portion 122 to limit the amount of data that can be placed are attached to the RFID antenna 104 mounted below and above the space portion 122. The two RFID antennas 126 are simultaneously or sequentially scanned through two or more multiple multiple antennas, thereby greatly improving the recognition accuracy. In addition, by providing a space portion 122 to accurately and explicitly limit the height of the data that can be loaned to the user at one time, contributes to the convenience of the user as well as to improve the reliability of the loan system.

1 is a side view of a conventional self-lending system.

2 is a side view of the self-lending system according to the present invention.

3 is a system diagram of a self-lending system according to the present invention.

Claims (4)

RFID reader 110 for exchanging data with RFID tag 108 attached to material 106 through one RFID antenna 104 mounted on shelf 102 on top of self-lending machine body 100. And a computer 112 connected to the RFID reader 110 and connected to a main computer including a manager PC of a library through network equipment, and a member number and ID of the user to be connected to the computer 112. And input / output means 114 of information such as a touch screen display unit which guides the use of the self-lending machine and shows the self-loaning result. The communication distance between the RFID tag 108 and the RFID antenna 104 is 20 cm. In the self-lending system in which the output of the RFID antenna 104 is set to be low, the lower wall on which the shelf 102 on which the RFID antenna 104 is mounted is fixed to the upper portion of the self-lending machine main body 100. part 116, a rear wall portion 118 having a predetermined height, and an upper wall portion 120 facing the lower wall portion 116 to define a height at which materials 106 to be loaned by a user are stacked at a time. Loan guide member 124 is provided to provide a space portion 122 to allow, the upper wall portion 120 of the loan guide member 124 facing the RFID antenna 104 and the RFID reader 110 And a second RFID antenna 126 having a low output so that a communication distance with the RFID tag 108 is set to 20 cm or less, and the RFID antenna 104 and the second RFID antenna 126 are The RFID reader 110 and the computer 112 and the antenna controller 128 are connected to the operating mode of the two RFID antennas 104 and 126 to the simultaneous operation mode or sequential operation mode or simultaneous operation mode and sequential operation mode. Control in parallel mode In the hard disk of the computer 112, information of the RFID tags 108 attached to the materials 106 to be loaned recognized by the RFID antenna 104 and the second RFID antenna are provided. Comparing the information of the RFID tags 108 attached to the materials 106 to be loaned recognized from the (126) is provided with software for deleting the duplicate recognition information, the RFID space in the space 122 A self-lending system of RFID-tagged materials using two RFID antennas, wherein the distance d between the 104 and second RFID antennas 126 satisfies the following expression.                       Below               ℓ≤ d ≤ 2ℓ (ℓ is 20cm) delete delete delete

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