Process 1: The intelligent management system of university library takes a bookshelf as a node, borrows and returns the specified bookshelf through the terminal self-service borrowing and returning machine mainly based on RIFD electronic tag reader, and synchronizes to the server through the wireless transceiver module, and hangs (unhook) the information of students and books in real time to complete the self-service borrowing and returning process.

process 2: the inspection machine set at the exit will conduct secondary inspection on the library book labels, and judge whether they have been registered for lending at the self-service lending machine at the bookshelf terminal.

process 3: when borrowing books, students can enter the book name or number in the counter workstation to check the book status (whether it can be borrowed or not) and the shelf number. The self-service lending and returning machine equipped with the bookshelf displays the operation steps in standby state. To borrow books, the library card is swiped first, the student information is read, and then the book label is swiped, and the book information (book name and shelf number) is read, which is packaged into a 32-bit code and transmitted to the database through the wireless transceiver module, thus linking the book with the borrower information.

step 4: to return the book, you need to brush the book label at the designated bookshelf, package it into a 32-bit code like the specific number of the bookshelf, and transmit it to the database through the wireless transceiver module to link the book with the borrower's information. At this time, there may be three kinds of information situations, such as busy, operation failure and operation success, which are returned and displayed through the LCD. Among them, "busy" means that the database is being occupied, which can be refreshed once in 5 s, and then returned to standby state after 5 busy times; "Operation failed" means that the borrowing limit is exceeded, the operation sequence is wrong, or the operation is not in the specified bookshelf; "Operation successful" means that the books are borrowed or returned successfully, and shows the number of books borrowed and the number of books that can be borrowed in the library card.