KR20080112103A - System for managing a library bookshelf and method for managing a library bookshelf by using the same - Google Patents

Abstract

A system and method for managing bookshelves of a library are provided to prevent the reading collision and transmission collision of tag data between RFID readers by performing the reading of tag data attached to books according to scheduling. A system for managing bookshelves of a library comprises at least one or more RFID antennas(32) and at least one or more RFID readers(33). The RFID antennas detect tag data from at least one or more RFID tags(31) adhered to books. The RFID readers are adhered to each bookcase in which the books are arranged to read the tag data sensed through the RFID antennas according to a reading schedule. The RFID readers transmit the read data to a central control center(35).

Description

Library bookshelf management system and library bookshelf management method using the same {SYSTEM FOR MANAGING A LIBRARY BOOKSHELF AND METHOD FOR MANAGING A LIBRARY BOOKSHELF BY USING THE SAME}

The present invention relates to a library bookshelf management system and a library bookshelf management method using the same. More specifically, the present invention relates to a library bookshelf management system that can maximize space utilization and reduce book search time, and a library bookshelf management method using the same.

Currently, the library's library management is a closed reading room structure and does not have any network environment. Books are made of sus (SUS) material, so books are simply displayed on a level, so you have to find and rent one by one.

In addition, in order for a user to withdraw books from each bookshelf, there is a problem that a certain space must be wasted because spaces are sufficiently spaced between the bookshelves.

Then, the technical problem of the present invention is to solve the above problems, an object of the present invention is to provide a library bookshelf management system that can maximize the space utilization, and reduce the book search time.

Another object of the present invention is to provide a bookcase management method using the library bookcase management system described above.

In order to realize the above object of the present invention, a library bookshelf management system according to an embodiment includes at least one RFID antenna and at least one RFID reader. The RFID antenna detects tag data from an RFID tag attached to a book. The RFID reader is attached to a bookshelf in which the book is disposed, reads tag data detected through the RFID antenna according to a reading schedule, and provides the read tag data to a central control center.

In the present embodiment, the library bookshelf management system is attached to the bookshelf in which the book is disposed, and the central control by using the wireless communication module as the movement of the book placed on each shelf of the bookshelf through the RFID reader is confirmed It may further comprise a Zigbee antenna in communication with the sensor.

In the present embodiment, the RFID reader may provide the tag data to the central control center using at least one of a wired communication network and a wireless communication network.

In the present embodiment, the library bookshelf management system acquires and displays loan book information at the central control center, and further includes an information display monitor for informing the manager whether a book is selected as the book is withdrawn from the bookshelf. It may include.

In this embodiment, the bookcase is an electric bookcase. Here, the electric bookcase may move in the book extraction direction of the bookcase along the rail. In addition, the bookcase may move along a rail in a direction perpendicular to the book extraction direction of the bookcase. The electric bookcase may be further attached with a motion detection sensor for detecting the movement of the bookcase manager. The electric bookcase may further include an indicator attached to a specific position of each compartment formed in the bookcase to indicate a compartment containing a desired book.

In the present embodiment, the library bookshelf management system may further include a temperature sensor attached to the bookshelf in which the book is disposed, and providing a sensed temperature to the central control center.

In the present embodiment, the library bookshelf management system may further include a humidity sensor attached to the bookshelf in which the book is disposed, and providing the detected humidity to the central control center.

In the present embodiment, the central control center provides a reading command to the current RFID reader to perform the reading of the tag data, and receives the tag data from the shelf server receiving the tag data from the RFID reader according to the response. It may include a shelf DB server for storing and providing the stored tag data to the library DB server. Here, the shelf server reads the information of the current RFID reader to perform reading and transmits a reading command of tag data to the current RFID reader.

For example, the bookshelf server may adjust an operation order of the RFID reader.

As another example, the shelf server may adjust the operation time of the RFID reader.

In this embodiment, the library bookshelf management system may further include an electric cart having a rental book storage. The electric cart may include an antenna, an information display monitor, and an RFID reader. The antenna is disposed in the rental book storage. The information display monitor is installed with a wireless communication module, and displays loan book information provided from the central control center. The RFID reader reads tag data through the antenna and provides the tag data to the information display monitor.

According to the library bookshelf management system and the library bookshelf management method using the same, it is possible to reduce the book search time, it is possible to maximize the space utilization due to the use of electric bookshelf. In addition, since the scheduling is performed when reading tag data attached to the book, it is possible to prevent a reading conflict between RFID readers and a transmission conflict of tag data.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and only this embodiment is made to complete the disclosure of the present invention, and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular forms also include the plural unless specifically stated otherwise in the phrases. As used herein, the expressions of include, and / or include, etc., may refer to one or more other components, steps, operations, and / or elements in the components, steps, operations, and / or elements mentioned. It does not exclude the presence or addition of it. Also referred to herein as above, above, above, or below, below includes intervening other components. In addition, the overlap as used herein refers to a shape in which the lower structure and the upper structure have a common center and overlap each other, and include a case where another structure is interposed between the lower structure and the upper structure, and any of the upper structure and the lower structure One structure is meant to completely overlap another structure. In addition, unless there is another definition for a term used herein, all terms used (including technical and scientific terms) may be used as meanings that can be commonly understood by those skilled in the art. There will be. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing a library bookcase management system according to a first embodiment of the present invention. FIG. 2 is a perspective view schematically showing an embodiment of a bookcase that may be adopted in the library bookcase management system of FIG. 1.

1 and 2, the library bookcase management system 100 according to the present invention is a wired and wireless communication terminal system 110, the coordinator and the upper network 120, RFID mobile recognizer 130, bookshelf 140, commander The computer system 150 and the RFID reader 160 of the.

The frequency of the tag mainly used to distinguish the current book is 13.56MHz band, but tags using the frequency of 900MHz band can be selectively used. Accordingly, the RFID reader 160 corresponding to the frequency is used. The RFID reader 160 is attached to a specific position of an article such as a book, in which tag data is recorded, and performs wired / wireless communication with a tag that distinguishes individual books. The RFID reader 160 may be disposed in each compartment 141 of the bookcase 140, and may replace a part or the whole of the partition of the bookcase 140.

The RFID reader 160 communicates with the command computer system 150 through the wired / wireless communication terminal system 110, the coordinator, and the upper network 120.

The wired / wireless communication terminal system 110 relays the RFID reader 160 with the coordinator and the upper network 120 to read information from the RFID tag attached to the book. The wired / wireless communication terminal system 110 may include a notification window attached to a bookcase.

A worker such as a librarian may perform a real time conversation with the command computer system 150 through the RFID mobile terminal 130 and a headset (not shown) during the operation. Here, the wired and wireless communication may be Zigbee or Bluetooth, W-LAN, etc. in addition to wired communication.

The RFID mobile terminal 130 may communicate with the coordinator and the upper network 120, and may also communicate with the wired / wireless communication system 110 attached to the bookshelf 140. For example, the communication device 110 may communicate with the wired / wireless communication system 110 through the coordinator and the upper network 120 when it is at a long distance, and directly communicate with the wired / wireless communication system 110 when it is near.

For example, if the network is configured using ZigBee technology, when the arrangement structure, which is the strength of the wired / wireless network, occurs, the cost and time can be minimized, and the bookshelf does not need to be turned on for 24 hours. Since only one notification window (not shown) installed in the bookshelf 140 near the person carrying the cart 220 or the RFID mobile terminal shown in FIG. 1 consumes power, the rest of the system can be minimized to a power saving mode, etc. Power saving effect is big.

The bookcase 140 may move by attaching a wheel to the bottom of the bookshelf. Bookshelf 140 may be implemented using a rack (rack). Rack is a 21st century advanced logistics storage system, which is a logistics storage system that makes the most efficient use of limited space and efficient storage, receipt, inventory management, etc. Although the initial capital investment is required, the system is very efficient considering the continuous use and the efficiency of the system. There are various kinds of racks such as high rack, pallet rack, laminated rack, drive in rack, arm rack, sliding rack, burial rack, bookshelf mobile rack, electric mobile rack, hanger rack, mold rack, etc. have. The biggest advantage of the rack is that it can be disassembled and moved. You can move from place to place, not just once. As such, utilizing the bookcase 140 may increase the efficiency of the space.

In Figure 2, for example, in order to increase the utilization of the space, the movable bookcase 140 is shown, it may be a bookshelf of an open bookcase fixed to the bottom surface, in this case, except the movement of the bookcase 140 itself All functions are the same.

A temperature / humidity sensor (not shown) may be installed in the compartment 141. The temperature / humidity sensor transmits the temperature and humidity conditions of the compartment 141 to ensure perfect book management. Such a temperature / humidity sensor is not only easy to manage important books such as old books sensitive to temperature and humidity, but also can be detected early through a number of sensors in case of fire.

The bookshelf 140 may supply power to the wired / wireless communication terminal system 110. The wired / wireless communication terminal system 110 is operated by the power supplied to the bookshelf 140, and may include a notification window system attached to the side of the bookshelf 140.

When the book is taken out and put in the cart 220, this situation is also displayed by the notification window system and the RFID mobile terminal 130 attached to the side of the bookshelf 140, and the situation is updated in real time in the command computer system 150.

When accessing the bookshelf 140 with the cart 220, using a Zigbee, the notification window (not shown) and the RFID mobile terminal 130 wakes up (wake up), the electric bills 140 You can also implement a working system.

Consists of the indicator 230 and the wire or ZigBee, and controls the operation through communication with the notification window system (not shown) on the left side.

When the book position is changed from the bookshelf 140 to the cart 220 or vice versa, the display of the change may be supported.

The RFID mobile terminal 130 may help an operator find a specific book. The RFID mobile terminal 130 may be directly transported by a worker, or may be placed on a cradle formed on the cart 220. The position of the work subject bookshelf 140 can be guided through a screen of the RFID mobile terminal 130 placed on the holder or a notification window (not shown) mounted on the top of the cart 220, and when the bookshelf is large, the cart 220 can be used. Drive to go to the corresponding column, the RFID mobile terminal 130 can be configured to search by reading the tag attached to a specific location of the book to find a notice on the screen when a matching book is found.

During the operation, the mobile terminal 130 and the headset (not shown) can communicate with the command computer system 150 in real time and proceed with the operation. In this case, the wired / wireless communication can be performed in addition to wired communication such as LAN, Zigbee, Bluetooth, W. Wireless communication such as LAN is possible.

All information provided through the notice board of the bookshelf 140 or the screen of the cart can be provided, and operates alone in a special situation without using the cart 220 to display the bookshelf 140 on which the book is placed, and find Go and open the bookshelf 140, the indicator 230 has a function to go to the book of the displayed position.

The cart 220 is driven by the library manager for rental or return. The RFID mobile terminal 130 and the monitor of the cart 220 may be used in conjunction. Drive the cart 220 and go to the corresponding column, it can be configured to view and find the event on the screen.

An RFID antenna (not shown) is installed at the entrance of the cart 220 to insert a book, and details of changes when an event such as a book is inserted from the bookshelf 140 into the cart 220 or a book is removed in the opposite direction. Is displayed on the side notification system.

When the book is taken out and put in the cart 220, this situation is also displayed in the notification window and RFID mobile terminal 130 on the side of the bookshelf 140, and is updated in real time with the bookshelf DB system. In operation, the RFID mobile terminal 130 and the headset through the real-time conversation with the command computer system 150 may be in progress. Here, the wired and wireless communication may be wireless communication such as Zigbee, Bluetooth, W-LAN in addition to wired communication such as LAN.

When the bookshelf 140 is approached with the cart 220, a system that wakes up the corresponding notification window and the RFID reader 160 may be implemented using Zigbee.

When driving the cart 220 and go to the bookshelf 140 automatically when the bookshelf 140 is opened (in the case of an electric bookshelf), it can be configured to be found by placing a notice mark in the box of the book matching the book to find have. In this case, when the wrong book is taken out, the indicator 230 of the bookshelf 140 emits light of a different color, so that it can be visually prevented from malfunctioning.

The command computer system 150 is configured with a computer system that functions to detect the search, the current status of the book and to send the data required from the RFID mobile terminal 130 to the RFID mobile terminal 130. In this case, when the wrong book is taken out instead of the scheduled book, the indicator shows a different color. If you take out the book and put it in the cart 220, this situation is also displayed in the notification window on the side of the bookshelf 140 and the RFID mobile terminal 130, and is updated in real time on the command computer system 150

The usage example is as follows.

When the library manager enters the entrance of the floor, the floor and the location of the book containing the list of books requested by the customer are automatically displayed, and the shortest distance is installed on the cart 220, or the monitor or RFID mobile terminal 130 is installed. It is shown as, the cart 220 in order to carry out the work can be carried out. In this case, the notification window system on the side of the upper side of the bookcase 140 to be worked on first turns on, and can go to the bookcase 140 without being lost. Depending on the configuration of the system, it may be possible to fully automate this process.

When the bookshelf 140 is near, the bookshelf 140 in the power saving mode is awakened from the wireless communication module installed in the cart 220, and the notification window on the side of the bookshelf 140 is automatically opened. At the same time, the indicator 230 attached to a specific portion of the compartment in which the book is inserted lights up so that the book can be easily moved in front of the compartment.

If the size of the library is large, drive the cart 220, go to the corresponding space, and read the tag attached to a specific position of the book by reading the RFID mobile terminal 130 to display a notification on the screen when a matching book is found It can be configured to be found.

In this case, when the wrong book is taken out, the indicator 230 may display a different color and the like, and indicate completion of a scheduled task to visually prevent a malfunction.

When the book is taken out and put into the cart 220, this situation is also displayed by the notification window on the side of the bookshelf 140 and the RFID mobile terminal 130, and is updated in real time on the command computer system 150.

When the work is finished in the first bookshelf 140, the signal comes on the light of the second bookshelf 140, the second object again, the inquiry to the monitor of the cart 220 can go to the corresponding position. In this way it leads to the final work bookcase 140.

During the operation, the RFID mobile terminal 130 and a headset (not shown) may perform a real-time conversation with the command computer system 150 via a wired / wireless communication network. Here, the wired and wireless communication network may be wireless communication such as Zigbee, Bluetooth, W-LAN in addition to wired communication such as LAN.

Since the network is configured using ZigBee technology, when the arrangement structure, which is the strength of the wired and wireless network, changes, the cost and time can be minimized, and the bookshelf 140 does not need to be turned on for 24 hours. Only one side notification window system installed on the bookcase 140 close to 220 consumes power, and the rest can be used in a power saving mode, thereby greatly reducing power.

3 is a perspective view schematically showing another embodiment of a bookcase that may be adopted in the library bookcase management system of FIG. 1.

The bookcase 140 shown in FIG. 3 is substantially the same as the bookcase 140 shown in FIG. 2, except that the rail 210 in FIG. 3 is installed to be perpendicular to the rail 210 in FIG. 2, Only the moving direction of the bookcase 140 is different. Therefore, the same or similar components are denoted by the same reference numerals, and further description thereof will be omitted.

Referring to FIG. 3, the rail 210 in FIG. 2 is installed in a direction in which the book is withdrawn from the compartment 141 in the bookcase 140, and the bookcase 140 is in a direction in which the book is withdrawn from the compartment 141. Compared to the movement, the rail 210 of the bookshelf 140 is installed in a direction perpendicular to the direction in which the book is withdrawn from the compartment 141, and the bookshelf 140 is perpendicular to the direction in which the book is withdrawn from the compartment 141. Move in one direction.

As described above, when the bookshelf 140 moves in the direction in which the book is withdrawn from the compartment 141, the bookshelf 140 does not have to make a space for the manager to stand and thus more efficient space management is possible.

Moreover, since only the bookcase 140 needs to be moved, it is more efficient for energy saving.

In addition, although the rail 210 shown in FIGS. 2 and 3 is shown to protrude from the bottom, it may be formed recessed from the bottom surface. When the recess is formed from the bottom surface in this way, the rail 210 does not cause inconvenience in walking of the warehouse manager or the like.

FIG. 4 is a diagram exemplarily illustrating items displayed on the notification window of the RFID mobile terminal of FIG. 1 or the cart of FIG. 2.

Referring to FIG. 4, the notification window of the RFID mobile terminal 130 or the cart 220 of FIG. 2 may display a location (floor, section), a title of a book, a bookcase number and a cell number.

The computer system 150 of the command unit illustrated in FIG. 1 determines the location of the library manager, and after determining the location (floor, section) of the requested book, the title of the book, the bookcase number and the number of the book, The books are sorted and transmitted in this order to the notification window of the RFID mobile terminal 130 or the cart 220 of FIG. 2.

Then, the library manager withdraws it in the order of the book shown in the RFID mobile terminal 130 or the cart 220 of FIG.

5 is another embodiment of a bookcase adopted in the library bookcase management system of the present invention.

Referring to FIG. 5, the bookshelf 140 includes an antenna 142 and a scanning bar 144. The antenna 142 is attached to the scanning bar 144. For example, four compartments 141 are included in each row direction of the bookcase 140, and one antenna 142 is installed in each compartment 141, and four antennas are installed in the scanning bar 144. 142 is provided. Since there is a limit to the range in which the antenna 142 can be read, an appropriate number of antennas 142 are provided in the scanning bar 144. When a plurality of antennas are installed, the antenna 142 may be fixed to the scanning bar 144, and a few antennas may move on the scanning bar 144.

The scanning bar 144 moves up and down the bookshelf 140 and scans the books of the compartments 141.

The position of the scanning bar 144 may vary according to an operation of an administrator. For example, the scanning bar 144 may be positioned at about 1/4 or 3/4 position (A or B) in the longitudinal direction of the compartment 141. Accordingly, the scanning bar 144 transmits and receives data at 1/4 or 3/4 positions.

5 illustrates an example in which the scanning bar 144 moves in the vertical direction, but may be moved and scanned in the horizontal direction.

The antennas 142 are connected to one RFID reader (not shown). Therefore, the number of RFID readers can be reduced. For example, in the case of a bookcase 140 having four compartments on both sides, eight antennas 142 are connected to one RFID reader.

Preferably, the antennas 142 corresponding to the four compartments transmit and receive data out of order. For example, if four cells are referred to as 1, 2, 3 and 4, for example, the data is 1, 2, 3, 4 or 4, 3, 2 and 1. Transmit and receive data in the order of 1, 3, 2, 4, etc. without transmitting and receiving. As a result of the experiment, when the antennas 501 sequentially transmit and receive data, it was confirmed that a shadow area was generated.

6 is a block diagram illustrating a library bookcase management system 30 according to a second embodiment of the present invention.

Referring to FIG. 6, the library bookshelf management system 30 according to the second embodiment of the present invention includes an RFID tag 31, an RFID antenna 32, an RFID reader 33, a communication network 34, and a central control center. (35).

The RFID tag 31 is attached to a book (not shown).

The RFID antenna 32 detects tag data from the RFID tag 31.

The RFID reader 33 is attached to a bookshelf in which the book is disposed, reads tag data detected through the RFID antenna 32 according to a reading schedule, and centralizes the read tag data via the communication network 34. Transfer to control center 35. The reading schedule may include an operation order and an operation time of the RFID reader 33. Conflicts can be prevented when RFID tags are recognized between adjacent RFID readers 33 through the above operation sequence and operation time. The reading schedule may be provided to the RFID reader 33 at the central control center 35. The RFID reader 33 received the reading schedule reads the tag data according to the operation time or the operation order. Meanwhile, the reading schedule may be stored in each of the RFID readers according to the factory shipment of the RFID reader 33 or the control of an administrator. Accordingly, the RFID reader 33 reads the tag data as the corresponding operation time according to the reading schedule elapses or the operation sequence is reached.

The communication network 34 may be a wired communication network such as a LAN or a wireless communication network such as Zigbee, Bluetooth, W-LAN, or the like.

7 is a conceptual diagram schematically illustrating the library bookcase management system illustrated in FIG. 6. In particular, Figure 7 shows a library bookcase management system using a Zigbee antenna. That is, it is shown that tag data is recognized from a tag attached to a book according to a predetermined reading schedule using an antenna of an RFID reader located in each book, and the recognized tag data is provided to the bookshelf server through a Zigbee antenna.

Referring to FIG. 7, the library bookshelf management system 300 includes at least one tag 310, at least one RFID antenna 320, at least one RFID reader 330, and at least one ZigBee attached to each of the books. The antenna 340, the central control center 350 and the library DB server 360.

The tag 310 is attached to the lower end of the display of the book to increase the recognition efficiency.

The RFID antenna 320 detects tag data from the RFID tag 310 attached to the book and provides the tag data to the RFID reader 330. Books placed on a shelf can be recognized with a single antenna. This is because the length of the shelf and the size of the antenna are the same and have a uniform EM-field distribution according to the width and length of the antenna. By using one antenna, the unit cost can also be reduced. The total thickness of the antenna is also about 10 mm, which takes up less space. Near-field antennas with low radiation efficiency, for example 0.08, will not recognize books or articles on neighboring shelves.

The RFID reader 330 is attached to a bookshelf in which the book is disposed, reads tag data detected through the RFID antenna 320 according to a predetermined schedule, and reads the read tag data via the Zigbee antenna 340. It is provided to the central control center 350.

Since the order of reading by the RFID reader 330 is managed by the book server 340, the recognition rate may be improved by allowing the RFID reader 330 to proceed in an order to avoid interference between adjacent RFID readers 330. . That is, the RFID reader 330 is divided into groups and managed by groups. In addition, we design the optimal reading order so that adjacent RFID readers between groups do not read at the same time. In addition, since the reading order is managed by the central control center 350, the reading time does not occur without a separate synchronization.

The tag recognition information read by the RFID reader 330 is transmitted to the central control center 350 through a wireless communication system defined by Zigbee antennas.

The Zigbee antenna 340 is attached to the bookshelf in which the book is disposed, and the central control using the wireless communication module is confirmed as the movement of the book disposed on the shelves of the bookshelf is confirmed through the RFID reader 330. Communicate with center 350.

The central control center 350 includes a shelf server 352 and a location DB server 354 to receive and store read tag data according to a schedule, and to store the tag data in the library DB server 360. Provide them.

The shelf server 352 may use various statistical methods, algorithms, and the like to increase the reliability of data received from the RFID reader 330. For example, the shelf server 352 reads information of a current RFID reader to perform reading and transmits a reading command of tag data to a current RFID reader, and as tag data is transmitted from the current RFID reader, the tag data. To the library DB server 360.

The location DB server 354 receives and stores tag data and provides the stored tag data to the library DB server 360. Since the location DB server 354 is configured separately from the existing book DB server, the change of the existing system can be minimized without modifying the existing DB. In addition, by providing the location information to the library DB server 360, the client program can be produced with a minimum understanding of the library system, thereby achieving convenience.

The library DB server 360 receives the updated tag data provided from the location DB server 354 and performs a book management operation. That is, the library DB server 360 may perform a series of book management operations such as whether the book is normally placed on a specific bookshelf or whether a specific book is withdrawn from the bookshelf. For example, information such as placement, loan, and import of books may be displayed on a monitor of a manager's computer for a certain time. By searching for the current location of the book at the time of book search, the task of finding the book is shortened. By managing the location of the entire book, it is easy to check the misplaced book or the loss of the book, thereby improving the management efficiency.

In this embodiment, the RFID reader and the book server are connected to each other through a Zigbee communication network including a Zigbee antenna, but may be connected through a wireless communication network such as Bluetooth or W-LAN. In addition, the RFID reader and the bookshelf server may be connected through a wired communication network such as a LAN.

8 is a configuration diagram schematically illustrating the library bookcase management system illustrated in FIG. 7. In particular, a conceptual diagram illustrating a tag data transmission method by RFID readers grouped to remove the influence of propagation between adjacent RFID readers is shown.

Referring to FIG. 8, an embodiment in which 16 RFID readers use Zigbee as a communication means is illustrated. Since four Zigbee channels are used in this embodiment, the operation of RFID readers is divided into four groups. It is assumed that each RFID reader is not adjacent to each other. The scheduling consists of four stages, and operation instructions are provided to four RFID readers in each stage. When RFID readers are operated for each group, channels are configured not to overlap. Here, the channel means that when communicating using the same or similar frequency band, the frequency band is divided in detail to allow a plurality of nodes to communicate.

In a first operation step, the first RFID reader 1 included in the first group GROUP1 transmits tag data through the first Zigbee channel CH1 and the second RFID provided in the second group GROUP2. The reader 2 transmits tag data through the second Zigbee channel CH2. In addition, the third RFID reader 3 provided in the third group GROUP3 transmits tag data through the third ZigBee channel CH3 and the fourth RFID reader 4 provided in the fourth group GROUP4. Transmits the tag data through the fourth Zigbee channel CH4.

In a second operation step subsequent to the first operation step, the second RFID reader 2 included in the first group GROUP1 transmits tag data through the second ZigBee channel CH2, and the second group ( The third RFID reader 3 provided in the GROUP2 transmits tag data through the third ZigBee channel CH3. In addition, the fourth RFID reader 4 included in the third group GROUP3 transmits tag data through the fourth ZigBee channel CH4 and the first RFID reader 1 provided in the fourth group GROUP4. Transmits the tag data through the first Zigbee channel CH1.

In the third operation step subsequent to the second operation step, the third RFID reader 3 included in the first group GROUP1 transmits tag data through the third ZigBee channel CH3 and the second group ( The fourth RFID reader 4 provided in the GROUP2 transmits tag data through the fourth ZigBee channel CH4. In addition, the first RFID reader 1 provided in the third group GROUP3 transmits tag data through the first ZigBee channel CH1 and the second RFID reader 2 provided in the fourth group GROUP4. Transmits the tag data through the second Zigbee channel CH2.

In a fourth operation step subsequent to the third operation step, the fourth RFID reader 4 included in the first group GROUP1 transmits tag data through the fourth ZigBee channel CH4, and the second group ( The first RFID reader 1 included in the GROUP2 transmits tag data through the first ZigBee channel CH1. In addition, the second RFID reader 2 provided in the third group GROUP3 transmits tag data through the second ZigBee channel CH2 and the third RFID reader 3 provided in the fourth group GROUP4. The tag transmits tag data through the third Zigbee channel CH3.

As described above, according to the reading scheduling according to the present invention, the recognition rate and the operation rate of the reader can be improved to avoid interference between RFID readers and prevent communication collisions of ZigBee so as to make maximum use of transmission efficiency. That is, a predetermined number of RFID readers are divided into groups to manage reading operations. Design optimal reading order so that adjacent RFID readers between groups do not read at the same time. The transmission rate is kept constant for each Zigbee channel to increase communication efficiency. Since the reading order is managed by the central control center, the reading time does not overlap without a separate synchronization.

Hereinafter, an example of the above-described central control center 350 will be described.

9 is a block diagram illustrating a central control center employed in the library bookcase management system shown in FIG. 7. In particular, a central control center with a scheduling function is shown.

Referring to FIG. 9, the central control center 350 includes a bookshelf server 352 and a location DB server 354, and the scheduling operation of controlling the operation of the RFID reader in the same time zone in consideration of data transmission amount and data collision. Do this.

The shelf server 352 includes a connection operation module 3151, a tag information collection module 3352, a reader operation module 3523, a scheduler 3524, and a location update module 3526.

The connection operation module 3351 performs a connection operation with a wired communication network or a wireless communication network to receive tag data from an RFID reader. The wired communication network may include a LAN. The wireless communication network may include a Zigbee communication network, a Bluetooth communication network and the like.

The tag information collection module 3352 collects tag information provided through a path of a communication network set by the connection operation module 3351, and provides the collected tag information to the filter module 3525.

The reader operation module 3523 and the scheduler 3524 limit the operation of the RFID reader in order to prevent a collision in data recognition and tag recognition between the RFID reader. Accordingly, it is possible to prevent collisions in tag recognition between adjacent RFID readers while ensuring the stability of data communication. The scheduler 3524 may adjust the operation order of the RFID reader, or may adjust the operation time of the RFID reader 330. For efficient performance, the RFID readers 330 are preferably managed in groups.

Typically, during system operation, the RFID reader 330 reads tag data and transmits the read tag data so that the server collects the tag data. However, the RFID reader 330 may not always need to read the tag at all times, and even if the RFID reader 330 continues to read, there is a high possibility that the tag is incorrectly recognized due to the collision between the RFID readers 330. For example, in the ZigBee employed in the present invention, since the amount of transmission is limited, it is practically difficult for all the RFID readers 330 to always operate to transmit tag data.

Therefore, in the embodiment of the present invention, the RFID antenna 320 may be designed not to recognize tags of other shelves. However, when a plurality of RFID readers 330 simultaneously generate radio waves for tag recognition, a situation in which an incorrect tag is not recognized or a correct tag may not be recognized. Therefore, it is preferable not to recognize the surrounding shelves while recognizing one shelf to eliminate radio interference. To this end, in the fourth embodiment of the present invention, the reader operation module 3523 and the scheduler 3524 may be used to adjust the reading operation order of the RFID reader 330.

In addition, when using ZigBee as a data communication means, when several ZigBee terminators communicate using the same channel, a collision may occur. In order to solve the problem caused by the collision, it also has a function to control so that only one communication for each channel, for example 16 channels.

When the system according to the present invention is applied to an actual site, the number of books located on the shelf of the bookcase which each RFID reader 330 is responsible for may be large or small. If the number of books is small, the number of tags is small and accordingly, the time required to recognize all tags is short. As such, the time required for the recognition varies depending on the shelves of the bookshelf, so that the reader operating module 3523 and the scheduler 3524 adjust the operating time of the RFID reader 330, thereby increasing the efficiency of the tag recognition time. According to the operation time required for each RFID reader 330, it also functions to optimize by adjusting the operation sequence.

The location update module 3526 provides the tag data collected by the tag information collection module 3352 to the location DB server 354. The location update module 3526 may provide the tag data to the location DB server 354 in real time, or may provide the tag data to the location DB server 354 on a predetermined time basis.

The location DB server 354 includes a book location DB 3551 and a reader information DB 3542.

The book location DB 3551 stores tag data provided by the location update module 3526.

The reader information DB 3542 stores operation information of the RFID readers provided by the reader operation module 3523, and provides operation information of the stored RFID readers according to a request of the reader operation module 3523. For example, the RFID reader operation information may include operating time information of the RFID readers. For another example, the operation information of the RFID readers may include operation order information of the RFID readers.

In general, ZigBee is less expensive, easier to install than other wireless products, and consumes less power. However, since the data transmission bandwidth is up to 250kbps, it is not suitable for use for data transmission between multiple RFID readers and a server. However, in the system according to the present invention, the amount of data transmitted at the same time is reduced by controlling the operation of the RFID readers at different time periods through a scheduler that controls the reading operation of the RFID readers. In addition, the above-described scheduling prevents a collision occurring during the reading operation of the RFID readers, thereby increasing the reliability of the tag data.

FIG. 10 is a block diagram illustrating a Zigbee antenna illustrated in FIG. 7. In particular, a block diagram of a Zigbee antenna connected to an RFID reader is shown.

7 and 10, the Zigbee antenna 340 includes an RFID antenna 342, a power operating module 344, an RFID receiver 346, and a wireless communication module 348.

The RFID antenna 342 is disposed along an outer region of the base substrate (not shown), receives an RFID signal corresponding to tag data, and provides the RFID signal to the RFID receiver 346.

The power operation module 344 supplies power required for the operation of the RFID receiver 346 and the wireless communication module 348.

The RFID receiver 346 receives the RFID signal via the RFID antenna 342.

The wireless communication module 348 converts the RFID signal received by the RFID receiver 346 into a Zigbee signal and transmits the signal.

11 is a conceptual diagram illustrating a bookcase 400 employed in the library bookcase management system shown in FIG. 7.

7 and 11, the bookshelf 400 is attached with a Zigbee antenna 340, an information display monitor 410, a motion detection sensor 420, and an indicator 430.

The Zigbee antenna 340 transmits the location information of the books arranged in each compartment to the host in real time. Since the Zigbee antenna 340 has been described with reference to FIG. 8, a description thereof will be omitted.

The information display monitor 410 displays manager information, error information, confirmation information, temperature / humidity information, etc. to inform the worker in real time, and plays a role of automatic opening and closing when the manager approaches. In addition, the information display monitor 410 receives and displays the recognized tag information provided from the RFID reader 330. For example, a list of books set to be provided in the bookshelf, or a list of books taken out of the bookshelf may be displayed. The list of books can provide more clear book information to the person who wants to withdraw the book or to the administrator who manages the book.

The motion detection sensor 420 detects the presence or movement of the bookcase manager. Sensors that can be employed as the motion detection sensor 420 are a human body (Pyroelectric infrared (PIR) sensor, infrared thermal sensor, illuminance sensor, ultrasonic, microwave sensor and the like. The infrared heat sensor can detect the presence of the operator by detecting the heat from the human body. For example, the location of the worker is determined by detecting that the temperature of the person is 36.5 degrees Celsius. On the other hand, in a library with many facilities such as a hot air fan or a cold air fan, when the infrared heat sensor is applied, the error is severe and cannot be reliable. In this case, a sensor using light sensitivity and a pyroelectric infrared (PIR) sensor, which detects infrared rays of body heat generated in the human body, may be considered. In addition, an illuminance sensor for sensing a person entering a certain area may be considered by using a change in the illuminance of light due to the presence of a person. However, this is also expected to be difficult in the presence of a lot of sunlight or bright light. In addition, microwave sensors that are relatively unaffected by heat (temperature) or light can be considered.

The indicator 430 is attached to a specific position of each compartment formed in the bookcase, and informs the compartment containing the desired book. For example, the indicator 430 normally maintains a blue color and, if there is a loan book, displays a red color to induce the manager. In addition, when the loan book is correctly selected and exited, the indicator 430 is changed from red color to blue color.

A temperature sensor (not shown) may be further attached to the bookshelf 400 to provide the sensed temperature to the central control center 350.

In addition, a humidity sensor (not shown) may be further attached to the bookshelf 400 to provide the detected humidity to the central control center 350.

FIG. 12 is a block diagram illustrating an information display monitor shown in FIG. 11.

Referring to FIG. 12, the information display monitor 410 includes an RFID antenna 412, a controller 414, an RFID receiver 416, and a wireless communication module 418, and includes administrator information, error information, confirmation information, It displays the temperature / humidity information and informs the worker in real time, and plays the role of automatic opening and closing when the manager approaches.

The RFID antenna 412 is disposed along an outer region of the base substrate (not shown) to receive an RFID signal corresponding to tag data and provide it to the RFID receiver 416.

The controller 414 converts an analog signal into a digital signal and provides it to a display unit (not shown) to display manager information, error information, confirmation information, temperature / humidity information, and the like.

The RFID receiver 416 receives the book information leaving the bookshelf or the book information disposed on the bookshelf through communication with the RFID reader and provides the book information to the display unit (not shown).

The wireless communication module 418 communicates with the central control center, receives the instructions of the central control center, and provides them to a display unit (not shown) to display the instructions.

FIG. 13 is an exploded perspective view illustrating a part of a bookshelf according to another example employed in the library bookshelf management system illustrated in FIGS. 2 to 3.

Referring to FIG. 13, a bookcase 450 according to another example may include two sidewall members 451, a shelf member 452 supporting a book disposed between the sidewall members 451, and the shelf member ( And a cover member 454 covering the RFID antenna 453 disposed on the valley 452a formed in the 452 and the RFID antenna 453 disposed on the shelf member 452.

A plurality of screws 451a disposed to support the shelf member 452 are disposed on the side wall members 451. The height at which the screws 451a are fastened may vary depending on the height of the book.

The wire 453a connected to the RFID antenna 453 is connected to the RFID reader through the hole 451b formed in the sidewall member 451.

In FIG. 12, the RFID antenna 453 is embedded in the valley formed on the upper surface of the shelf member. However, the RFID antenna 453 may be embedded by forming a valley in the lower surface of the shelf member. In addition, the RFID antenna 453 may be attached to the lower surface of the shelf member.

14 is a configuration diagram illustrating an electric cart employed in the library bookshelf management system illustrated in FIGS. 2 to 3.

Referring to FIG. 14, the electric cart 220 is attached with an information display monitor 222, an antenna 224, a rental book storage 226, and an RFID reader 228.

The information display monitor 222 is a wireless communication module is installed to display a list of loan books provided from the central control center.

The antenna 224 is disposed in the rental book storage 226, when the lender places the book on the rental book storage 226, the RFID reader 228 detects tag data from the RFID tag attached to the book. To provide. The rental book storage 226 is provided in the electric cart 220, and stores the books drawn out by the manager.

When the borrower withdraws the book and places it on the rental book storage 226, the RFID reader 228 recognizes the book and displays whether the book is the correct book on the information display monitor 222.

FIG. 15 is a configuration diagram schematically illustrating the operation of the electric bookshelf 400 illustrated in FIG. 7.

Referring to FIG. 15, the plurality of electric bookshelves 400 are disposed on the electric rail 490 and moved under the control of the rail controller 490. In FIG. 15, although the electric bookshelf 400 is shown to move in the book extraction direction of the electric bookshelf 400 along the electric rail 490, the electric bookshelf 400 is along the electric rail 490. It may be moved in a direction perpendicular to the book extraction direction of the electric bookcase 400.

In operation, as the list of loan books requested by the user is registered in the DB, the manager PC 510 of the library management system 500 controls the rail control unit connected to the control line to control the movement of the bookshelf in which the book is provided. If the book manager approaches the bookshelf, the ID card of the manager is recognized and automatically opened and closed through a monitor in which an RFID reader installed in each bookshelf is embedded. Subsequently, after the bookcase is opened and closed, the infrared sensor 420 installed in the bookcase recognizes the worker to prevent an accident due to a malfunction. When a rental book is loaded on an electric card (not shown), the RFID reader installed in the electric cart recognizes the book and confirms that the book is correct, and transmits the data to the central control center.

16 is a conceptual diagram schematically illustrating a library bookcase management system according to a third embodiment of the present invention. In particular, a library bookshelf management system using a LAN is shown.

Referring to FIG. 16, a library bookshelf management system 400 according to a third embodiment of the present invention may include at least one tag 310, at least one RFID antenna 320, and at least one RFID attached to each book. It includes a reader 330, LAN 440, the central control center 350 and the library DB server 360. In FIG. 15, except that the ZigBee antennas 340 of FIG. 6 are replaced with LANs, FIGS. 7 and 16 are the same, and thus the same components are denoted by the same reference numerals, and detailed description thereof will be omitted.

In recent years, LANs are often established, and when LAN is used as a communication means, it is stable and the influence of data transfer amount is also small.

According to the library bookshelf management system according to the present invention, it is possible to maximize the space utilization, and reduce the book search time.

In addition, the temperature-humidity sensor makes it possible to make more efforts to preserve the island.

In addition, since the scheduling is performed when reading tag data attached to the book, it is possible to prevent a reading conflict between RFID readers and a transmission conflict of tag data.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

1 is a block diagram schematically showing a library bookcase management system according to a first embodiment of the present invention.

FIG. 2 is a perspective view schematically showing an embodiment of a bookcase that may be adopted in the library bookcase management system of FIG. 1.

3 is a perspective view schematically showing another embodiment of a bookcase that may be adopted in the library bookcase management system of FIG. 1.

FIG. 4 is a diagram exemplarily illustrating items displayed on the notification window of the RFID mobile terminal of FIG. 1 or the cart of FIG. 2.

5 is another embodiment of a bookcase adopted in the library bookcase management system of the present invention.

6 is a block diagram illustrating a library bookcase management system according to a second embodiment of the present invention.

7 is a conceptual diagram schematically illustrating the library bookcase management system illustrated in FIG. 6.

8 is a configuration diagram schematically illustrating the library bookcase management system illustrated in FIG. 7.

9 is a block diagram illustrating a central control center employed in the library bookcase management system shown in FIG. 7.

FIG. 10 is a block diagram illustrating a Zigbee antenna illustrated in FIG. 7.

FIG. 11 is a configuration diagram illustrating an example of a bookshelf employed in the library bookshelf management system shown in FIG. 2.

FIG. 12 is a block diagram illustrating an information display monitor shown in FIG. 11.

FIG. 13 is an exploded perspective view illustrating a part of a bookshelf according to another example employed in the library bookshelf management system illustrated in FIGS. 2 to 3.

14 is a configuration diagram illustrating an electric cart employed in the library bookshelf management system illustrated in FIGS. 2 to 3.

15 is a configuration diagram schematically illustrating the operation of the electric bookshelf shown in FIG. 7.

16 is a conceptual diagram schematically illustrating a library bookcase management system according to a third embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100, 300: library bookshelf management system 110: wired and wireless communication terminal system

120: Coordinator and higher network 130: RFID mobile terminal

140: bookshelf 141: compartment

150: command computer system 160: RFID reader

210: rail 220: cart

230: indicator 501: antenna

502: scanning bar 31, 310: RFID tag

32, 320, 342: RFID antenna 33, 330: RFID reader

332: RFID signal receiving unit 334: first memory

336: second memory 336: control unit

340: Zigbee antenna 344: power operating module

346: RFID receiver 348, 418: wireless communication module

350: central control center 352: bookshelf server

354: Location DB Server 360: Library DB Server

400: bookshelf 410: information display monitor

412: RFID antenna 414: controller

416: RFID receiver 420: motion detection sensor

430: indicator 490: rail control unit

35: Central Control Center

Claims (21)

At least one RFID antenna for detecting tag data from an RFID tag attached to a book; And A library bookshelf management system including at least one RFID reader attached to a bookshelf in which the book is arranged, reading tag data detected through the RFID antenna according to a reading schedule, and providing the read tag data to a central control center . The library bookshelf management system of claim 1, wherein the RFID readers are grouped in a predetermined number, and RFID readers arranged in the same group read the tag data at different times according to the schedule. The library bookshelf management system of claim 2, wherein each of the RFID readers arranged in adjacent groups and using the same channel reads book information from the RFID tags at different times. The library bookshelf management system of claim 1, wherein the RFID reader provides the tag data to the central control center using at least one of a wired communication network and a wireless communication network. The apparatus of claim 1, further comprising a Zigbee antenna attached to a bookshelf in which the book is arranged and communicating with the central control center as the movement of the book arranged on the shelves of the bookshelf is confirmed through the RFID reader. Library bookshelf management system, characterized in that. According to claim 1, wherein the central control center obtains and displays loan book information, and further includes an information display monitor for informing the manager whether the correct book selection as the book is withdrawn from the bookcase Library bookshelf management system. The library bookcase management system of claim 1, wherein the bookcase is an electric bookcase moving along a rail. The library bookshelf management system of claim 7, further comprising a motion detection sensor attached to the electric bookshelf to detect movement of the bookshelf manager. The library bookshelf management system of claim 1, further comprising an indicator attached to a specific position of each compartment formed in the bookcase to indicate a compartment including a desired book. The library bookshelf management system of claim 9, wherein the indicator indicates when a wrong book is withdrawn from the compartment and indicates completion of a scheduled task. According to claim 1, wherein the central control center, A bookshelf server providing a reading command to a current RFID reader to perform reading of tag data and receiving tag data from the RFID reader according to a response thereof; And Library bookshelf management system characterized in that it comprises a bookshelf DB server for receiving and storing the tag data, and provides the stored tag data to the library DB server. The library bookshelf management system of claim 11, wherein the bookshelf server reads information of a current RFID reader to perform reading and transmits a reading command of tag data to the current RFID reader. The library bookcase management system of claim 12, wherein the bookshelf server adjusts an operation sequence of the RFID reader. The library bookshelf management system of claim 12, wherein the bookshelf server adjusts an operation time of the RFID reader. The library bookshelf management system of claim 1, wherein each of the RFID readers stores an operation sequence and an operation time according to the reading schedule to perform the reading operation. According to claim 1, further comprising an electric cart having a rental book storage, The electric cart, An antenna disposed on the rental book storage; An information display monitor installed with a wireless communication module and displaying loan book information provided from the central control center; And And a RFID reader for reading tag data through the antenna and providing the tag data to the information display monitor. The method of claim 16, wherein the information display monitor, An RFID antenna for receiving an RFID signal corresponding to tag data; An RFID receiver for receiving the book information leaving the bookshelf and the book information disposed on the bookshelf through communication with the RFID reader and providing the book information to the display unit; And And a wireless communication module configured to perform communication with the central control center and receive the instructions of the central control center and provide the instructions to the display unit to display the instructions. The library bookshelf management system of claim 1, wherein the RFID antenna is disposed in parallel with a shelf of a bookshelf in which the book is disposed. 19. The library bookcase management system of claim 18, wherein the RFID antenna is disposed above or below the shelf. 19. The library bookcase management system of claim 18, wherein the RFID antenna is embedded in the shelf. The library bookshelf management system of claim 1, wherein the RFID antenna is disposed perpendicular to a shelf of a bookshelf in which the book is disposed.

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