RFID library anti-theft mechanism

The RFID smart library is an intelligent library that is based on cloud computing technology, RFID technology and smart devices in the environment of the Internet of Things to realize the connection of objects, books and books, and the intercommunication of books and people, and provide intelligent services for users. . So how does the smart library realize the anti-theft of books? Let's analyze the anti-theft mechanism of RFID libraries in detail.

What is the RFID library anti-theft mechanism?

The core of an RFID smart library is books, so the most important thing to build a smart library is to convert book information (book location, inventory, borrowing and return cleaning, etc.) into data information and Store it in the cloud server. And write the data into the label, paste it on the corresponding book, and give each book a unique identification, so that the interconnection between the book and the network can be realized, the book information can be found through the label identification, and the book can be quickly found through the network search location and status.

The RFID tags attached to the books are smart tags, and the chips contain anti-theft flags for Access Control identification. When processing labels, borrowing books, and returning books, the system will automatically write specific status information to the anti-theft flag in the label, and the security access control recognizes these states. Only books that have completed the borrowing procedures can pass through the access control, otherwise the access control machine will recognize them. Books in the library state will directly send out sound and light alarms.

There are three types of RFID radio frequency anti-theft technologies: AFI identification bit detection, UID detection and EAS bit detection.

The AFI identification bit is a special byte used to classify multiple tags in the RFID chip. Paste the RFID chip with a specific AFI value on the book, and set the detector to trigger an alarm when it detects this specific value, so as to achieve the purpose of book anti-theft.

UID is the number stored in sector 0 and block 0 of the RFID tag. This number is unique and cannot be modified. When the detector detects the UID of the tag, it compares it with the UID of the protected tag in the database. If there is a result, it will trigger an alarm, and if there is no result, it will pass.

The EAS security bit is set in the rewritable area of the label. When the book is put into storage, the EAS bit is activated. If the detector detects the flag, it will trigger an alarm. After the book is borrowed, the flag is cleared, and the detector will not report to the police at this time.

The above is the relevant content of the RFID library anti-theft mechanism. RFID technology has many advantages. It can complete data reading and writing in real time, identify tags in motion, carry multiple data, and identify multiple tags at a time. Therefore, RFID is introduced in the library. Technology can help libraries quickly and conveniently complete the statistics, sorting and circulation of books.