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1. System Overview
1.1. System background
Book management is an important aspect of the application of RFID technology, and the library is the application place with the most concentrated demand for book management. According to research and analysis, there are currently more than 10,000 libraries nationwide, and most libraries have transitioned from a purely manual management mode to a digital management mode that uses bar code recognition, computer networks, and computer software technologies.
Based on the RFID library management system using radio frequency identification RFID technology, readers can freely enter and exit each lending room with a card in hand. Books will be automatically borrowed and returned using electronic digital tags. The emergence of self-service book borrowing and returning machines and book return boxes, especially its functions such as multiple book loan and return services and 24-hour book return services at one time, greatly saves the workload of librarians and the waiting time for readers. RFID can better improve the efficiency of book circulation management and collection management, so that librarians can have more time to provide services to readers, and bring new opportunities for the development of the library industry
1.2. Status Quo and Analysis
At present, libraries basically use barcode technology as an identification method to achieve these functions. However, although barcodes are cheap and convenient to make, they also have some inherent shortcomings that are difficult to overcome, such as easy wear, small storage space, and inconvenience to the use of books, which are not completely suitable for libraries.
The RFID technology used in libraries today mainly focuses on RFID technology in the HF and UHF frequency bands. Analyzed from various aspects, in the application of library management, UHF frequency band RFID technology has more advantages than HF frequency band RFID technology, and it is also a direction for the development of library book RFID technology management in the future.
2. System Introduction
2.1. System Principle
Figure 1: System working principle diagram
By associating the barcode of the book with the electronic label, the association management of the book is realized. The electronic label can be placed in the book by using self-adhesive or chip built-in method. Readers can borrow and return independently through the automatic borrowing and returning cabinet. The administrator can use the counting machine to regularly check the books in the library, and it can also search for the shelves. Features. Equipped with a security door with UHF reader, it can realize the data collection of books in and out to prevent illegal loss of books.
2.2. System structure
The hardware of the RFID book management system includes radio frequency acquisition equipment, automatic borrowing and returning equipment, database servers, switches, and security door detection. These devices use RS-485, Ethernet or GPRS transmission interfaces in the switch to effectively integrate various devices and serve together Library management system.
Figure 2: Topological diagram of system structure
Figure 3: System function module diagram
2.3. System Function Module
RFID book management system includes: label conversion system, self-service borrowing system, self-service book return system, intelligent search system, automatic sorting system, hand-held inventory system, security door detection system and administrator workstation. Each subsystem is independent but close. Connected.
2.4. Work flow chart
2.4.1. Label Conversion System
The tag conversion system is a bridge between the radio frequency identification technology and the existing library management system. Through the tag conversion system, the RFID unique identification number is bound to the unique book code, and the RFID technology is connected to the existing library management system. , To achieve access to the detailed information of books and readers, so as to integrate RFID technology into the existing library system.
Figure 4: Label conversion flow chart
The label conversion system completes the conversion of book electronic labels, shelf labels and library card electronic labels. The label conversion system consists of two parts: hardware and software systems.
Hardware composition
The label conversion system hardware includes: a control host and a label conversion device. The control host is used to install the label conversion software system to control the data conversion of the book label and the library card label, and realize the binding of label information and other information such as bar codes. Access to detailed information of books and readers can be achieved through binding.
Label conversion software system
The label conversion software system adopts the B/S structure to realize the label conversion. The purpose of adopting the B/S structure is to minimize the post-maintenance work of library managers. Any computer connected to the label conversion device can realize the label conversion work through the IE browser.
2.4.2. Self-service Book Borrowing and Returning System
Before RFID technology was adopted, some libraries used barcode and magnetic stripe technology to realize self-service borrowing and returning of books. However, due to the limitation of barcode and magnetic stripe technology, not only could only borrow and return one book at a time, but there were also certain The loopholes have greatly reduced the efficiency of self-service borrowing and returning books, and have not brought substantial improvements to the work of the library. The emergence of radio frequency identification technology has satisfactorily solved the above-mentioned problems. The RFID self-service borrowing and returning system can realize the self-service borrowing and returning of multiple books at one time, and there will be no loopholes based on barcode and magnetic stripe technology, which greatly improves the library’s humanized service level and work efficiency.
Picture 5: Self-service Book Borrowing and Returning Machine
The self-service borrowing and returning system combines radio frequency identification, computer, network, software and touch screen control operation technology to realize the self-service borrowing and returning function of books with electronic tags. The system consists of: control host, LCD touch display, RFID radio frequency module, embedded printer, multimedia voice system, and self-service book borrowing and returning through the self-service book borrowing and returning software installed on the control computer. The self-service borrowing and returning machine has the characteristics of beautiful appearance, simple operation of the system, and integration of borrowing and returning books, which can realize the borrowing and returning of multiple books at the same time, with fast recognition speed, high borrowing and returning efficiency, and convenient equipment installation and maintenance.
2.4.3. Smart Search System
In many cases, readers know part of the names or types of books, and they have searched a lot of bookshelves and reading rooms but have not found the books they want. At this time, it is necessary to use the RFID intelligent search function, which can retrieve the books that the reader wants in a relatively short time.
Figure 6: Smart search flowchart
The intelligent search system completes the quick search of books. There are two ways to find book information and input: manual way and data download way.
1) Manual entry refers to directly entering the book information that needs to be searched into the portable search terminal, and multiple book information can be entered at one time.
2) The data download method refers to the connection of the wireless local area network with the business system, downloading the book information that needs to be searched entered by the administrator in advance to the handheld terminal, and searching for the book.
2.4.4. Automatic sorting system
At present, many books and materials in the library are reflected in the books. Readers find the book information through the retrieval system, and when they pick up the book from the shelf according to the category of the book, they often cannot find the book. This happens This is caused by the fact that the books are not placed in categories. After using RFID technology to manage books, the above-mentioned problems can be solved well.
The staff only needs to put the books returned by the readers into the automatic sorting machine. The automatic sorting machine integrates the electronic label and barcode information in the books, and automatically sorts the books according to the set program, so as to realize the rapid classification of a large number of books in the library. , Improve work efficiency, greatly reduce the phenomenon of disorderly homing and misclassification of books.
Figure 7: Automatic sorting system
2.4.5. Automatic inventory system
The inventory work of libraries has always been a very headache, because inventory work requires a lot of manpower and time, and some libraries have not done inventory for 10 years. Based on the RFID library management system, the library’s inventory review is carried out through the channel reader and the handheld reader.
The books sorted by the sorter are carted by the staff into the lending room. When passing through the door equipped with channel readers, the tag information in the cart is read and uploaded to the database service center. Through the post-work manager’s inventory check with the handheld reader, it brings great convenience to the library inventory management, so that the library management staff can more efficiently and frequently carry out the book inventory work.
Figure 8: Flow chart of automatic inventory
2.4.6. Safety door detection system
RFID electronic surveillance doors are mainly used to detect any books, CDs, etc. that have left the library illegally.
The function of RFID security inspection door:
1) Detect the label activated by the safety bit (EAS), sound an alarm, and flash the alarm light
2) Record the number of readers and the number of alerts
3) The serial number of the book that triggered the alarm can be read and updated to the management workstation
4) Daily automatic reset
5) Self-diagnosis and repair function
2.4.7. Administrator workstation
The administrator workstation is mainly responsible for the account management of library borrowing cards, library monitoring equipment management, daily equipment maintenance and maintenance, setting holidays and special festivals, editing workstation broadcast information, and other behaviors that require manual intervention. It also includes the provision, collation and analysis of daily reports to better serve customers.
3. System Features
Simplified process and improved efficiency
The current borrowing and returning process generally uses a barcode scanning system. The collection of barcode data is done through a fixed or handheld barcode scanner. The scanning operation requires manual opening of the book and finding the barcode position before scanning. The operation process is relatively cumbersome. Books are inefficient. The introduction of RFID technology can realize a dynamic, fast, large data volume, and intelligent book borrowing and returning process, improving the security of information storage, the reliability of information reading and writing, and the efficiency and speed of borrowing and returning books.
System improvement to improve safety
Optimize the existing book management system through the RFID intelligent book management system, link the anti-theft system and the book circulation management system, and record the historical record of each book in and out of the library, so that it can be matched with the historical record of borrowing and returning books. It can effectively improve the accuracy of the anti-theft system and ensure the safety of books.
Reduce workload and improve job satisfaction
The work of library staff is very heavy due to years of repetitive work. For example, relying on manual book inventory to have a large workload, it is easy to have certain negative thoughts about the work. In addition, readers are dissatisfied with the complex process of borrowing and returning books in the library, resulting in a decrease in library job satisfaction. Through the RFID intelligent library management system, the staff can be liberated from the daily heavy and repetitive work of the library, and personalized services can be customized for different readers, so as to realize the humanized operation process and improve the readers’ understanding of the work of the library. satisfaction level.
Strong label data retention and long lifespan
Barcode storage data is limited, and it is susceptible to damp, pollution and other limitations, which restricts the management of the library to a large extent. However, the storage area of electronic tags is large, and the data retention capacity can reach more than 100 years. Coupled with the characteristics of waterproof, antimagnetic, and high temperature resistance, the life of RFID electronic tags is much longer than that of barcodes. Due to the non-contact reading method, each electronic tag can be read more than 100,000 times at least, and the electronic tag can be used for a long time once it is attached.
4. Other application areas
Intelligent file management;
Intelligent management of paper documents;
Intelligent management of asset leasing
5. Recommended hardware equipment selection
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