CN103246902A

CN103246902A - Intelligent book positioning system based on ultrahigh frequency RFID technology

Info

Publication number: CN103246902A
Application number: CN2013101685938A
Authority: CN
Inventors: 杨国田; 王海东; 郭津瑞; 刘海珍; 何旭洁; 史龙; 梁骏; 张琪彬
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2013-05-09
Filing date: 2013-05-09
Publication date: 2013-08-14

Abstract

The invention belongs to the technical field of library automation management, in particular to an intelligent tracking and positioning system for library books based on ultra-high frequency RFID technology. The purpose of the present invention is to provide a system capable of tracking and locating documents in a library, which is used to optimize the management work of the current library and bring readers more efficient and humanized retrieval experience. The technical scheme adopted by the present invention is: the intelligent book positioning system based on UHF RFID technology is mainly composed of intelligent bookshelf 1, communication base station 6, system server 7, and retrieval terminal 8; the method of matching electronic tag codes is used for positioning ; Positioning methods are divided into real-time positioning method and non-real-time positioning method. The invention introduces the ultra-high frequency RFID technology into the intelligent management of the library, and constructs the "Internet of Things" of the library from the three levels of electronic tags, readers, base stations, and system servers.

Description

A kind of intelligent book positioning system based on ultra-high frequency RFID technology

Technical field

The invention belongs to library automation administrative skill field, particularly a kind of library book intelligent-tracking positioning system based on ultra-high frequency RFID technology.

Background technology

Along with the progress of society and science and technology, the library becomes the indispensable part of modern civilization.Traditional libraries mainly relies on manpower to carry out manual management, so put on the shelf at the storage of documentation ﹠ info collection, information, books, have big, the inefficient problem of cost in the work such as books are made an inventory.Because the traditional libraries searching system can't provide the precise position information of books, causes the books search efficiency very low, the wrong frame of books, random frame phenomenon are general, both have been unfavorable for the efficient management of collection document, have also influenced reader's reading experience greatly.

Radio-frequency (RF) identification---RFID (Radio Frequency Identification), be a kind of contactless automatic identification technology, have noncontact, reading rate soon, not affected by environment, read that distance is big, label data can encrypt, store that data capacity is big, the storage information change freely, can handle simultaneously a plurality of labels, identification work need not manual intervention etc. advantage.As far back as the nineties in 20th century, Singapore National Library just takes the lead in this technology is introduced in library's construction, and becoming in the world, first uses the library of RFID technology.

The application of RFID technology in the library improved collection greatly and checked work efficiency with whole of books, reduced the demand of human resources; Simplified effectively and borrowed also book operation, strengthened the circulation of books; Further solved books anti-ly ruin, antitheft problem, greatly promoted the development of library automation cause.Yet so far, the employed technology in intelligent book shop is still based on high-frequency RF ID, and do not realize the accurate location to the books physical location.

The RFID technology has developed into super high frequency technique by high frequency technique, super high frequency technique have reach wider, transmit data speed and soon, once read characteristics such as number is more, table 1 has provided the contrast of high frequency technique and super high frequency technique:

Table 1

?	High frequency	Ultrahigh frequency
			Frequency of operation	13.56MHz	860-930MHz
Typical case's reading/writing distance	Less than 1 meter	Greater than 1 meter, general 4 to 6 meters
			Maximum reading/writing distance	Individual event 180c, the 100cm of omnidirectional	10m
Whether be applicable to the data transmission in far-field region	Be not suitable for	Be fit to
			The recipient is to influence	Do not have	Generally
The RFID label	Be generally passive label	Be divided into active label and passive label two big classes
			Chip price (relatively)	Low	Generally
Message transmission rate (relatively)	Comparatively fast	Read to write soon slower
			Present operating position	The a large amount of use	Use less

Summary of the invention

The purpose of this invention is to provide a kind of system that can realize document track and localization in the shop, library, be used for to optimize the management work in current library, bring that the reader is efficient more, the retrieval of hommization is experienced.

The technical solution used in the present invention is:

Described intelligent book positioning system based on ultra-high frequency RFID technology mainly is made up of intelligent bookshelf, communication base station, system server, searching terminal;

Be equipped with on the described intelligent bookshelf for the ultrahigh frequency RFID shelf label of expression bookshelf positional information with for the read write line that reads ultra-high frequency RFID label, be placed on the book labels that all is equipped with on every books in the bookshelf for the sign book information; The intelligence bookshelf is by the sky alignment label emitting radio frequency signal of read write line inside, read write line reads shelf label in the equivalent layer and the information of book labels, and the book information that obtains to computer feedback and the positional information of books, finish books search and information feedback task;

Described communication base station is used for connecting ultrahigh frequency radio frequency identification (RFID) reader and system server, be responsible for the communication between read write line and the server, accept the search instruction of server and call the work of reading that corresponding read write line carries out electronic tag, accept the electronic labeling information that read write line reads and pass to system server;

Described system server comprises the database of storage library book information and is used for realizing the retrieval software of books positioning function;

Described searching terminal is used for realizing man-machine interaction, accepts reader or library management personnel to the demand information of books, and resulting books positional information is fed back to reader or library management personnel.

In the described intelligent book positioning system based on ultra-high frequency RFID technology, electronic tag is divided into two kinds of shelf label and book labels;

Described electronic tag has the ID length of at least 96 bits, the electronic tag coding rule is used for tag types zone bit, floor number, bookshelf number, bookshelf row number, bookshelf level number, book number for fetch bit according to the order of sequence, wherein zone bit " 0 " is represented shelf label, " 1 " expression book labels.

The method of described intelligent book positioning system using electronic tag code matches based on ultra-high frequency RFID technology positions;

Described electronic tag code matches method is described below: (1) as reader or librarian behind searching terminal retrieval bibliography, this bibliography electronic tag code of system server analysis, draw its theoretical position, send retrieval command by the base station to the read write line of corresponding bookshelf respective layer afterwards, read write line is retrieved all books of this layer, if this bibliography is really in original position, then system server is shown to searching terminal with the bibliography position that draws; (2) if this bibliography not in original position, system server is transferred other read write line, inquire about specifying bibliography, when searching this book in certain layer of bookshelf of certain read write line at its place, then the current actual position information with these books feeds back to system server, and presents to reader or librarian by searching terminal.

The applicable object of described intelligent book positioning system based on ultra-high frequency RFID technology comprises two kinds of reader and librarians.

The localization method of described intelligent book positioning system based on ultra-high frequency RFID technology is divided into two kinds of real-time localization method and non real-time localization methods:

(1) real-time localization method: described real-time localization method is primarily aimed at the reader; When the reader retrieves books by searching terminal, system finishes retrieval to the books that are retrieved by calling read write line after receiving retrieval command, and the positional information that retrieves fed back to the reader by searching terminal, described real-time localization method can guarantee that the reader obtains the real-time position information of books, but because whole retrieval needs certain hour just can finish, and can frequently call read write line work;

(2) non real-time localization method: described non real-time localization method both at the reader also at the librarian; All read write line work in the shop can be called according to certain time interval by system, read the positional information of all documents in the shop and this information is kept in the system database; The positional information that the positional information that the reader obtains during books in retrieval obtains for system's last update, the librarian can transfer the positional information of database the last time, and the books of wrong frame, random frame are in time playbacked; The books positional information that described non real-time localization method offers reader and keeper is not real-time, but has reduced the work number of times of read write line.

Compared with prior art, the present invention has following remarkable advantage and beneficial effect:

(1) the present invention has introduced library's intelligent management with ultra-high frequency RFID technology: the high-frequency RF ID technology that the bar codes technique that adopts during with traditional libraries management document and the advanced library of part adopt is compared, the ultra-high frequency RFID technology that the present invention uses is not vulnerable to the restriction of reading/writing distance, is more suitable for circulation and management in book document; Characteristics such as that used ultra-high frequency RFID label has is passive, volume is little, bending is not fragile, reading/writing distance far away, can read in batches, be suitable for the book document management, realize that for the present invention the location of books lays a good foundation, also bring new opportunity for library management to intelligent development;

(2) the present invention be used for to realize that the book document positioning algorithm based can take the sign that minimum electronic tag ID length realizes the books positional information, both reduced the cost of electronic tag, has also accelerated the speed that read write line reads electronic labeling information; Label type code position among the electronic tag ID, floor number, bookshelf number, bookshelf row number, bookshelf level number and book number are binary digital information, have improved the work efficiency of system;

(3) the invention provides two kinds of localization methods of collection books: localization method and non real-time localization method in real time.When the actual consideration from the library, the flow of the people of large-scale library every day is very big, and the wrong frame of same books, random frame phenomenon can't repeat to take place in a short time, therefore, though described non real-time localization method does not provide the real time position of books, but greatly reduce the access times that call of read write line, and can satisfy general reader's reading requirement and collection personnel's normal management; And for the reader that specific demand is arranged, can adopt real-time localization method of the present invention to carry out searching in real time, fast of books;

(4) the present invention from electronic tag, read write line and base station, three aspects of system server have built " Internet of Things " in library, set up the real-time Communication for Power of book information and system server, guaranteed that system database correctly obtains the books current position information, solved the search efficiency that the reader runs into when traditional libraries retrieval books low, can't find the problem at the shop document, improved also that library's document is made an inventory, whole efficient.

Description of drawings

Fig. 1 is the hardware topology figure of the intelligent book positioning system based on ultra-high frequency RFID technology of the present invention,

Number in the figure: 1-intelligence bookshelf; The 2-ultrahigh frequency radio frequency identification (RFID) reader; 3-ultrahigh frequency RFID shelf label; 4-is equipped with the books of ultra-high frequency RFID label; 5-ultrahigh frequency RFID book labels; The 6-communication base station; 7-intelligent book shop Tomcat-AdminPortal; The 8-searching terminal; 9-automatically borrowing-returning books machine.

Fig. 2 is the system construction drawing of intelligent book positioning system of the present invention.

Fig. 3 is the coding example of ultra-high frequency RFID label of the present invention.

Fig. 4 is the program flow diagram of real-time localization method of the present invention.

Embodiment

The invention provides a kind of intelligent book positioning system based on ultra-high frequency RFID technology, the present invention will be further described below in conjunction with the drawings and specific embodiments.

The hardware topology structure of described intelligent book positioning system based on ultra-high frequency RFID technology as shown in Figure 1, it is intelligent bookshelf 1, ultrahigh frequency radio frequency identification (RFID) reader 2, ultrahigh frequency RFID shelf label 3, the books 4 that ultra-high frequency RFID label is housed, ultrahigh frequency RFID book labels 5, communication base station 6, intelligent book shop Tomcat-AdminPortal 7, searching terminal 8, automatically borrowing-returning books machine 9 that system mainly forms hardware.

Ultrahigh frequency radio frequency identification (RFID) reader 2 and ultrahigh frequency RFID shelf label 3 are housed on the described intelligent bookshelf 1, and the books 4 that ultra-high frequency RFID label is housed are placed on the intelligent bookshelf 1, and every books 4 that ultra-high frequency RFID label is housed all are equipped with ultrahigh frequency RFID book labels 5; Intelligence bookshelf 1 is by the sky alignment label emitting radio frequency signal of ultrahigh frequency radio frequency identification (RFID) reader 2 inside, ultrahigh frequency radio frequency identification (RFID) reader 2 reads ultrahigh frequency RFID shelf label 3 in the equivalent layer and the information of ultrahigh frequency RFID book labels 5, and the book information that obtains to intelligent book shop Tomcat-AdminPortal 7 feedback and the positional information of books, finish books search and information feedback task; Described communication base station 3 is used for connecting ultrahigh frequency radio frequency identification (RFID) reader 2 and intelligent book shop Tomcat-AdminPortal 7, be responsible for the communication between ultrahigh frequency radio frequency identification (RFID) reader 2 and the intelligent book shop Tomcat-AdminPortal 7, accept the search instruction of intelligent book shop Tomcat-AdminPortal 7 and call corresponding ultrahigh frequency radio frequency identification (RFID) reader 2 and carry out the work of reading of electronic tag, accept the electronic labeling information that ultrahigh frequency radio frequency identification (RFID) reader 2 reads and pass to intelligent book shop Tomcat-AdminPortal 7; Described intelligent book shop Tomcat-AdminPortal 7 comprises the database of storage library book information and is used for realizing the retrieval software of books positioning function; Described searching terminal 8 is used for realizing man-machine interaction, accepts reader or library management personnel to the demand information of books, and resulting books positional information is fed back to reader or library management personnel; Automatically borrowing-returning books machine 9 can help reader to realize self-service borrows and return book, the search function that provides searching terminal 8 to have simultaneously.

As shown in Figure 2, the system architecture of the intelligent book positioning system based on ultra-high frequency RFID technology of the present invention mainly is divided into three layers:

(1) being positioned at top is system server, comprises the retrieval software of system database, library management system and realization books positioning function, and the reader can pass through the searching terminal access server, realizes the man-machine interaction of total system; Server can send instructions to read write line by the base station simultaneously, calls read write line and carries out work, and accept the read message that the base station is transmitted;

What (2) be positioned at the middle layer is communication base station, and communication base station is responsible for the data transmission between system server and the rfid interrogator, the base station realized between a plurality of read write lines and the server fast, stabilized communication, for the extensive expansion of read write line is laid a good foundation;

What (3) be positioned at the bottom is ultrahigh frequency radio frequency identification (RFID) reader, ultrahigh frequency radio frequency identification (RFID) reader is arranged on the concrete bookshelf, directly communicate by letter with the ultrahigh frequency RFID book labels with the ultrahigh frequency RFID shelf label, read canned data in the ultra-high frequency RFID label, and be transferred to server by the base station.

The present invention has provided the coding example of ultrahigh frequency RFID electronic tag.As shown in Figure 3, the ID length of the electronic tag that native system is selected is 96 bits, i.e. 24 16 system numbers, the electronic tag coding has adopted preceding 10 of 24 16 system numbers, its coding rule is: the 1st is zone bit (position hereinafter all refers to 16 systems), " 0 " expression shelf label, " 1 " expression book labels; The 2nd bit representation floor number, illustrated is 1 layer; The 3rd ~ 4 bit representation bookshelf number is illustrated as bookshelf No. 23; The 5th is the row number of bookshelf, is illustrated as the 4th row; The 6th is bookshelf level number (it is 4 layers that the acquiescence bookshelf is divided into), is illustrated as the 2nd layer; The 7th ~ 10 is the numbering of this layer books, and these four only have implication at book labels, and shelf label is defaulted as 0000.This example has only adopted preceding 10 of electronic tag to encode, and can expand with 14 of remainder when collection books quantity is big, can satisfy the demand that the library preservation scale constantly enlarges.

The program circuit of real-time localization method of the present invention is as shown in Figure 4: the reader is retrieved by the searching terminal input behind the book information, system server is at first searched the electronic tag coding of the books correspondence that is retrieved, and extract the theoretical position of the books that are retrieved according to electronic tag coding, server carries out work by the read write line that communication base station calls on the corresponding bookshelf layer: when this read write line retrieves when being retrieved books, will the be retrieved current location information of books of searching system is presented at searching terminal; When this read write line does not retrieve when being retrieved books, read write line begins to call in the shop other read write lines books is retrieved.

Claims

1. An intelligent book location system based on UHF RFID technology, characterized in that it is made up of an intelligent bookshelf, a communication base station, a system server, and a retrieval terminal;

The smart bookshelf is equipped with UHF RFID bookshelf tags for indicating the position information of the bookshelves and a reader for reading the UHF RFID tags, and each book placed in the bookshelf is equipped with tags for identifying book information. The book label; the smart bookshelf transmits radio frequency signals to the label through the antenna inside the reader, and the reader reads the information of the bookshelf label and book label in the corresponding layer, and feeds back the book information and the location information of the book to the computer. Complete book search and information feedback tasks;

The communication base station is used to connect the UHF RFID reader-writer and the system server, is responsible for the communication between the reader-writer and the server, accepts the search instruction from the server and invokes the corresponding reader-writer to read the electronic tag, accepts The electronic tag information read by the reader is transmitted to the system server;

The system server includes a database for storing library book information and retrieval software for realizing book location functions;

The retrieval terminal is used to realize human-computer interaction, accepting information about books required by readers or library managers, and feeding back the obtained book location information to readers or library managers.

2. In the intelligent book positioning system based on UHF RFID technology according to claim 1, the electronic tags are divided into bookshelf tags and book tags.

3. The electronic tag described in the electronic tag according to claim 2, characterized in that the coding rule of the electronic tag is to take positions in sequence for label type flag, floor number, bookshelf number, bookshelf column number, bookshelf floor number, Book number, where the flag "0" indicates the shelf label, and "1" indicates the book label.

4. The intelligent book positioning system based on UHF RFID technology according to claim 1, characterized in that the positioning is carried out by means of electronic tag code matching.

5. The intelligent book positioning system based on UHF RFID technology according to claim 1, wherein the positioning method is divided into real-time positioning and non-real-time positioning.

6. The real-time positioning method according to claim 5, characterized in that: when the reader retrieves books through the retrieval terminal, the system completes the retrieval of the retrieved books by invoking the reader-writer after receiving the retrieval command, and retrieves the retrieved books The location information of the book is fed back to the reader through the retrieval terminal. The real-time positioning method can ensure that the reader obtains the real-time location information of the book, but because the entire retrieval takes a certain amount of time to complete, and the reader will be frequently called to work.

7. The non-real-time positioning method according to claim 5, characterized in that: the system can call all readers in the library to work according to a certain time interval, read the location information of all documents in the library and save this information In the system database; the location information obtained by readers when retrieving books is the location information obtained by the latest update of the system, and the librarian can retrieve the latest location information of the database, and return books in wrong or disorderly shelves in time; The book location information provided to readers and administrators by the non-real-time positioning method is not real-time, but reduces the number of times the reader works.