Method for borrowing and returning books by using mobile terminal

Abstract

The invention discloses a method for borrowing and returning books by using a mobile terminal. The method comprises the following book borrowing steps and book returning steps: a book borrowing step: step 1, a reader performs book borrowing operation through a book borrowing and returning system on the mobile terminal; 2, after completing the book borrowing operation, the reader carries the borrowed book and leaves the library; step 3, the exit detection system carries out sound and light alarm on the books which are not borrowed, and does not carry out alarm on the books which are borrowed; the method comprises the following steps: 1, when a reader carries a book and passes through a library entrance, an entrance detection system reads label information of a corresponding borrowed book and transmits the label information to a server; step 2, the reader performs book returning operation through a book borrowing and returning system on the mobile terminal; and 3, after the book is successfully returned, the server sends book returning information to the entrance detection system and the exit detection system, and the reader successfully completes book returning. According to the invention, the record data is forwarded among the book borrowing and returning system, the detection system and the server, so that unified distribution of the server and point-to-point forwarding of each system can be achieved.

Description

Technical Field

[0001] The invention belongs to the field of library management, in particular to a method for borrowing and returning books using a mobile terminal. Background Art

[0002] Libraries are currently the main places for borrowing and lending books. The current operations of borrowing and returning books in libraries mainly include: 1. Manual borrowing and returning books, that is, the staff registers the borrowing and returning information. When readers need to borrow and return books, they give the books to the staff, and the staff registers the borrowing and returning of books in the management system. 2. Use self-service borrowing and returning equipment to borrow and return books. To use self-service equipment to borrow and return books, you first need to paste RFID tags inside the books (RFID tags are divided into high frequency and ultra-high frequency, and their functions are the same), and then perform tag conversion operations (write RFID tag data to associate the library's unique book barcode). After each successful borrowing and returning of books, the device will change the anti-theft position written into the RFID tag, and the security door at the exit will alarm according to the anti-theft position. This depends on equipment such as borrowing and returning machines. The security door will not recognize and process anti-theft alarms for borrowing and returning books without the equipment. 3. Use mobile terminals such as mobile phones to borrow books. After completing the borrowing procedures on the mobile terminal, you need to verify it on the designated anti-theft device when leaving the library (at this time, the device will modify the anti-theft bit of the RFID tag when verifying that the book has been borrowed). The security gate will not alarm when leaving the library after the device has processed it. Therefore, the current technology requires that the book return operation be performed on the book return machine. In fact, this method is a disguised use of self-service borrowing and returning machine equipment, and the final logic is the same. In this way, there is a heavy reliance on the writing, modification and judgment of the anti-theft bit of the RFID tag. Therefore, when borrowing books in systems other than self-service borrowing and returning machine equipment, the security gate of the library will not detect that the book has been borrowed and will also alarm, and the book can only be returned on the self-service book return machine equipment, which limits the innovative development and intelligent application of smart libraries. Summary of the invention

[0003] The invention provides a method for borrowing and returning books using a mobile terminal, so as to solve the defects in the prior art.

[0004] The present invention is achieved through the following technical solutions:

[0005] A method for borrowing and returning books using a mobile terminal comprises the following steps:

[0006] Steps to borrow books:

[0007] Step 1: After entering the library, the reader selects the corresponding borrowed book and borrows the book through the borrowing and returning system on the mobile terminal. The borrowing and returning system on the mobile terminal transmits the borrowing information to the server or the exit detection system;

[0008] Step 2: After the reader completes the borrowing operation, he / she leaves the library with the borrowed book. The exit detection system set at the exit of the library reads the label information on the borrowed book and determines whether the corresponding book is in the borrowing state;

[0009] Step 3: The exit detection system will give sound and light alarms according to the detected book borrowing status. Sound and light alarms will be given for books that have not been borrowed, and no alarm will be given for books that have been borrowed. At the same time, the book exit information will be transmitted to the server or the entrance detection system and other exit detection systems, indicating that the book has been checked out.

[0010] Steps for returning books:

[0011] Step 1: When a reader brings a book through the library entrance, the entrance detection system reads the tag information of the corresponding borrowed book and transmits it to the server or other entrance and exit detection systems;

[0012] Step 2: The reader returns the book through the book borrowing and returning system on the mobile terminal, and the book borrowing and returning system transmits the return information to the server;

[0013] Step 3: After receiving the book return request, the server checks whether the book has been checked in. If the book is not checked in, the server returns a result that the book cannot be returned. If the book is already checked in, the server checks whether the book can be returned and returns a result of success or failure.

[0014] Step 4: After the book is returned successfully, the server will send the book return information to the entry detection system and the exit detection system, and the reader will then have successfully returned the book.

[0015] In the above-mentioned method for borrowing and returning books using a mobile terminal, the borrowing and returning book system of the mobile terminal can be used by readers through an APP or H5 page or mini program on the mobile terminal as a carrier.

[0016] As described above, a method for borrowing and returning books using a mobile terminal, the mobile terminal book borrowing and returning system can be used by readers through a mobile phone APP or a tablet APP or a handheld device APP or a WeChat public account or a WeChat applet or an Alipay life account or an Alipay applet or a Douyin applet or a Kuaishou applet or a Toutiao applet as a carrier.

[0017] In the above-mentioned method for borrowing and returning books using a mobile terminal, the entrance and exit detection system of the library includes an RFID reading device, and the books in the library are all provided with RFID tags.

[0018] In the above-mentioned method for borrowing and returning books using a mobile terminal, the borrowing and returning system will determine whether the book can be borrowed based on the current reader card when performing a book borrowing operation. The judgment conditions are based on customer needs and the current reader's card status, including whether the number of borrowable books has been exceeded and whether the book can be borrowed.

[0019] In the above-mentioned method of borrowing and returning books using a mobile terminal, the detection system at the exit of the library reads the information of the books to be checked out and determines whether the books are borrowed, and issues an alarm according to the actual status. If the borrowing is completed, no alarm will be issued, but if the borrowing is not completed, an alarm will be issued.

[0020] In the above-mentioned method for borrowing and returning books using a mobile terminal, the exit detection system of the library includes an audible and visual alarm device. When the exit detection system detects that an unborrowed book is about to be checked out of the library, the audible and visual alarm device will emit a warning sound and light up a warning light, thereby reminding readers that a book has not been successfully borrowed and needs to be borrowed again or that the book itself is not available for borrowing.

[0021] In the above-mentioned method for borrowing and returning books using a mobile terminal, the entrance and exit detection system of the library uses a Redis cache database to store each record, and directly obtains and processes it from the cache database when needed.

[0022] In the above-mentioned method for borrowing and returning books using a mobile terminal, the Redis cache database of the library's entrance and exit detection system can not only quickly obtain and process data in real time, but also the alarm detection of the exit detection system is not affected when the network is disconnected or paralyzed. It can also detect outgoing books and sound and light alarms for unborrowed books.

[0023] In the above-mentioned method of borrowing and returning books using a mobile terminal, the information transmission between the entrance and exit detection system of the library and the server adopts two transmission modes: unified distribution and point-to-point forwarding. One mode is selected according to the actual situation. The unified distribution mode is that after all the entrance information and exit information are transmitted to the server, the server will uniformly distribute them to each entrance and exit detection system; the point-to-point distribution mode is that after the entrance detection system or the exit detection system receives the response book information, it does not need to pass through the server point-to-point transmission to other entrance detection systems and exit detection systems. The two modes mainly affect the data transmission efficiency and time, and have no effect on the actual effect and steps of borrowing and returning books.

[0024] The advantages of the present invention are:

[0025] The forwarding of record data among the book borrowing and returning system, the detection system and the server in the present invention can achieve unified distribution by the server and point-to-point forwarding of each system. The prior art is to transmit the records to the server, and each system obtains them from the server when needed. This has certain requirements on the processing speed of the server and the network environment. If the network environment and the server processing are slow, the processing at the detection end will be delayed. For example, during the check-out inspection, if it takes 3 seconds for the server to return to the detection system, the security door alarm will be delayed by 3 seconds. At this time, the reader may have gone far away, and it is meaningless to alarm again. Therefore, the forwarding of each record in the present invention realizes the timeliness and real-time performance of data transmission.

[0026] The detection system in the present invention uses a cache database such as Redis to store each record, and directly obtains and processes it from the cache database when needed. The most important thing is to consider the complexity of the network environment. Like the solution of the prior art, if the network is paralyzed or the server is not connected for a short time, the detection system will be completely paralyzed. At this time, no matter whether the books are borrowed or not, no alarm will be triggered when they leave the library, which has a great safety hazard for the loss of state-owned assets. The Redis cache database used in the present invention stores all real-time records locally in advance, so that even if the network is paralyzed, it can also be verified locally whether to alarm, etc., solving the safety problem when the network is paralyzed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 This is one of the schematic diagrams of the book borrowing operation of the present invention;

[0029] Figure 2 This is the second schematic diagram of the book borrowing operation of the present invention;

[0030] Figure 3 This is the third schematic diagram of the book borrowing operation of the present invention;

[0031] Figure 4 This is the fourth schematic diagram of the book borrowing operation of the present invention;

[0032] Figure 5 This is the fifth schematic diagram of the book borrowing operation of the present invention;

[0033] Figure 6 This is the sixth schematic diagram of the book borrowing operation of the present invention;

[0034] Figure 7This is one of the schematic diagrams of the book returning operation of the present invention;

[0035] Figure 8 This is the second schematic diagram of the book returning operation of the present invention;

[0036] Fig. 9 This is the third schematic diagram of the book returning operation of the present invention;

[0037] Fig.10 This is the fourth schematic diagram of the book returning operation of the present invention;

[0038] Fig.11 This is the fifth schematic diagram of the book returning operation of the present invention;

[0039] Fig.12 This is the sixth schematic diagram of the book returning operation of the present invention;

[0040] Fig.13 This is the seventh schematic diagram of the book returning operation of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] A method for borrowing and returning books using a mobile terminal comprises the following steps:

[0043] Steps to borrow books:

[0044] Step 1: After entering the library, the reader selects the corresponding borrowed book and borrows the book through the borrowing and returning system on the mobile terminal. The borrowing and returning system on the mobile terminal transmits the borrowing information to the server or the exit detection system;

[0045] Step 2: After the reader completes the borrowing operation, he / she leaves the library with the borrowed book. The exit detection system set at the exit of the library reads the label information on the borrowed book and determines whether the corresponding book is in the borrowing state;

[0046] Step 3: The exit detection system will give sound and light alarms according to the detected book borrowing status. Sound and light alarms will be given for books that have not been borrowed, and no alarm will be given for books that have been borrowed. At the same time, the book exit information will be transmitted to the server or the entrance detection system and other exit detection systems, indicating that the book has been checked out.

[0047] Steps for returning books:

[0048] Step 1: When a reader brings a book through the library entrance, the entrance detection system reads the tag information of the corresponding borrowed book and transmits it to the server or other entrance and exit detection systems;

[0049] Step 2: The reader returns the book through the book borrowing and returning system on the mobile terminal, and the book borrowing and returning system transmits the return information to the server;

[0050] Step 3: After receiving the book return request, the server checks whether the book has been checked in. If the book is not checked in, the server returns a result that the book cannot be returned. If the book is already checked in, the server checks whether the book can be returned and returns a result of success or failure.

[0051] Step 4: After the book is returned successfully, the server will send the book return information to the entry detection system and the exit detection system, and the reader will then have successfully returned the book.

[0052] Specifically, the book borrowing and returning system for the mobile terminal described in this embodiment can be used by readers through an APP or H5 page or mini program on the mobile terminal as a carrier.

[0053] Specifically, the book borrowing and returning system of the mobile terminal described in this embodiment can be used by readers through a mobile phone APP, a tablet APP, a handheld device APP, a WeChat public account, a WeChat applet, an Alipay life account, an Alipay applet, a Douyin applet, a Kuaishou applet, or a Toutiao applet as a carrier.

[0054] More specifically, the library entrance and exit detection system described in this embodiment includes an RFID reading device, and the books in the library are all provided with RFID tags.

[0055] More specifically, the book borrowing and returning system described in this embodiment will determine whether the book can be borrowed based on the current reader card when performing a book borrowing operation. The judgment conditions are based on customer needs and the current reader's card status, including whether the number of borrowable books has been exceeded and whether the book can be borrowed.

[0056] Furthermore, the library exit detection system described in this embodiment reads the information of the books to be checked out and determines whether the books are borrowed, and issues an alarm according to the actual status. If the borrowing has been completed, no alarm will be issued, but if the borrowing has not been completed, an alarm will be issued.

[0057] Furthermore, the exit detection system of the library described in this embodiment includes an audible and visual alarm device. When the exit detection system detects that an unfinished borrowed book is about to be checked out of the library, the audible and visual alarm device will emit a warning sound and light up a warning light, thereby reminding readers that a book has not been successfully borrowed and needs to be borrowed again or that the book itself is not available for borrowing.

[0058] Furthermore, the library entrance and exit detection system described in this embodiment uses a Redis cache database to store each record, and directly retrieves and processes it from the cache database when needed.

[0059] Furthermore, the Redis cache database of the library's entrance and exit detection system described in this embodiment can not only quickly obtain and process data in real time, but also the alarm detection of the exit detection system will not be affected when the network is disconnected or paralyzed. It can also detect the books leaving the library and sound and light alarms for unborrowed books.

[0060] Furthermore, the information transmission between the entrance and exit detection system and the server of the library described in this embodiment adopts two transmission modes: unified distribution and point-to-point forwarding. One mode is selected according to the actual situation. The unified distribution mode is that after all the entrance information and exit information are transmitted to the server, the server will uniformly distribute them to each entrance and exit detection system; the point-to-point distribution mode is that after the entrance detection system or the exit detection system receives the response book information, it does not need to pass through the server point-to-point transmission to other entrance detection systems and exit detection systems. The two modes mainly affect the data transmission efficiency and time, and have no effect on the actual effect and steps of borrowing and returning books.

[0061] Example 1

[0062] The best way of the present invention is to use point-to-point data forwarding, with one or more servers responsible for handling the logic of borrowing and returning books, and installed with the back-end system of the borrowing and returning system and the third-party book management system (if any); a security door is placed at the entrance, responsible for the detection of entering the library, and the detection system is installed; a security door is placed at the exit, responsible for the detection and alarm of outgoing books, and the detection system is installed. The front end of the borrowing and returning system uses WeChat public accounts or WeChat applet.

[0063] Borrowing books (such as Figure 1-6As shown in the figure): When a reader borrows a book, he opens the WeChat applet, clicks the borrow button to enter the borrowing page, and after the prompt to scan the book barcode pops up, scan the QR code of the book according to the prompt. After the system recognizes the book barcode, it communicates with the back-end system (if there is a third-party management system, the back-end synchronously communicates with the third-party management system to register the borrowing of the book). After the borrowing registration is completed, if the borrowing fails, the front-end system prompts the reason for the failure. If the borrowing is successful, the back-end system will send or store the borrowing record to the server and forward it to the entrance detection system and the exit detection system simultaneously. At this time, the borrowing business is completed. If the reader takes this book out of the library, the security gate (or detection device) detects that the book is out of the library, and the detection system processes it according to the local record. If the local record is marked as borrowed, the detection system records that the book has been out of the library and forwards it to the server and other detection systems simultaneously. If the local record is not found or marked as not borrowed (or returned), the detection system sends an alarm instruction to the security gate, and the security gate will sound and light alarms.

[0064] Return books (such as Figure 7-13 As shown in the figure): When a reader brings a book into the library from outside, the security door (or detection device) detects the book entering the library. The detection system forwards the book entry record to the server and other detection systems based on the entry information. At this time, the reader can open the WeChat applet, click Return Book (or in the borrowed book list), select the book to be returned, and click the Return Book button. At this time, the front-end system communicates with the back-end system, and the back-end system queries the book entry record. If the entry record is found, the back-end system (if there is a third-party management system, the back-end synchronously communicates with the third-party management system to register the return of the book) registers the return of the book. If the return of the book fails, the front-end system will prompt the reason for the failure. If the return of the book is successful, the back-end system will send or store the return record to the server and forward it to the entrance detection system and the exit detection system simultaneously. At this time, the return of the book is completed. If the book is returned after the return is completed, the exit detection system will alarm when the book passes through the exit again. If the reader does not enter the library and directly clicks Return Book, the back-end system does not detect the entry record, and directly prompts the front-end system that the reader is not in the library and cannot return the book. If a reader returns a book without leaving the library after borrowing it, the back-end system will determine it as a normal operation even if there is no entry record, and the book can be returned directly. If a reader enters the library but does not return the book and then leaves, the exit detection system will not alarm based on the record.

[0065] Example 2

[0066] The best way of the example of the present invention also uses a unified forwarding mode of the server, with one or more servers responsible for handling the logic of borrowing and returning books and the unified distribution of entering, leaving, borrowing and returning books, and installing a back-end system of the borrowing and returning system and a third-party library management system (if any); a security door is placed at the entrance, responsible for the detection of entering the library, and the detection system is installed; a security door is placed at the exit, responsible for the detection and alarm of books leaving the library, and the detection system is installed. The front end of the borrowing and returning system uses a WeChat public account or WeChat applet.

[0067] Borrowing books (such as Figure 1-6 As shown in the figure): When a reader borrows a book, he opens the WeChat applet, clicks the borrow button to enter the borrowing page, and after the prompt to scan the book barcode pops up, scan the QR code of the book according to the prompt. After the system recognizes the book barcode, it communicates with the back-end system (if there is a third-party management system, the back-end synchronously communicates with the third-party management system to register the borrowing of the book). After the borrowing registration is completed, if the borrowing fails, the front-end system prompts the reason for the failure. If the borrowing is successful, the back-end system will send or store the borrowing record to the server, and the server will then distribute the record to the entrance detection system and the exit detection system synchronously. At this time, the borrowing business is completed. If the reader takes this book out of the library, the security gate (or detection device) detects that the book is out of the library, and the detection system processes it according to the local record. If the local record is marked as borrowed, the detection system records that the book has been out of the library and forwards it to the server and other detection systems synchronously. If the local record is not found or marked as not borrowed (or returned), the detection system sends an alarm instruction to the security gate, and the security gate will sound and light alarms.

[0068] Return books (such as Figure 7-13As shown in the figure): When a reader brings a book into the library from outside, the security door (or detection device) detects the book entering the library. The detection system forwards the book entry record to the server based on the entry information, and the server distributes the record to other detection systems. At this time, the reader can open the WeChat applet, click Return Book (or in the borrowed book list), select the book to be returned, and click the Return Book button. At this time, the front-end system communicates with the back-end system, and the back-end system queries the book entry record. If the entry record is found, the back-end system (if there is a third-party management system, the back-end synchronously communicates with the third-party management system to register the return of the book) registers the return of the book. If the return of the book fails, the front-end system will prompt the reason for the failure. If the return of the book is successful, the back-end system will send or store the return record to the server, and the server will then forward the return record to the entrance detection system and the exit detection system in a unified manner. At this time, the return of the book is completed. If the return of the book is completed, the exit detection system will alarm when the book passes through the exit again. If the reader does not enter the library and directly clicks Return Book, the back-end system does not detect the entry record, and directly prompts the front-end system that the reader is not in the library and cannot return the book. If a reader returns a book without leaving the library after borrowing it, the back-end system will determine it as a normal operation even if there is no entry record, and the book can be returned directly. If a reader enters the library but does not return the book and then leaves, the exit detection system will not alarm based on the record.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for borrowing and returning books using a mobile terminal, characterized in that: The steps include: Steps to borrow books: Step 1: After entering the library, the reader selects the corresponding borrowed book and borrows the book through the borrowing and returning system on the mobile terminal. The borrowing and returning system on the mobile terminal transmits the borrowing information to the server or the exit detection system; Step 2: After the reader completes the borrowing operation, he / she leaves the library with the borrowed book. The exit detection system set at the exit of the library reads the label information on the borrowed book and determines whether the corresponding book is in the borrowing state; Step 3: The exit detection system will give an audible and visual alarm according to the detected borrowing status of the book. The books that have not been borrowed will give an audible and visual alarm, and the books that have been borrowed will not give an alarm. At the same time, the book check-out information will be transmitted to the server or the entrance detection system and other exit detection systems, indicating that the book has been checked out. Steps for returning books: Step 1: When a reader brings a book through the library entrance, the entrance detection system reads the tag information of the corresponding borrowed book and transmits it to the server or other entrance and exit detection systems; Step 2: The reader returns the book through the book borrowing and returning system on the mobile terminal, and the book borrowing and returning system transmits the return information to the server; Step 3: After receiving the book return request, the server checks whether the book has been checked in. If the book is not checked in, the server returns a result that the book cannot be returned. If the book is already checked in, the server checks whether the book can be returned and returns a result of success or failure. Step 4: After the book is returned successfully, the server will send the book return information to the entry detection system and the exit detection system, and the reader will then have successfully returned the book.

2. A method for borrowing and returning books using a mobile terminal according to claim 1, characterized in that: The mobile terminal book borrowing and returning system can be used by readers through an APP or H5 page or mini program on the mobile terminal as a carrier.

3. A method for borrowing and returning books using a mobile terminal according to claim 1, characterized in that: The mobile terminal book borrowing and returning system can be used by readers through a mobile phone APP, a tablet APP, a handheld APP, a WeChat public account, a WeChat applet, an Alipay life account, an Alipay applet, a Douyin applet, a Kuaishou applet, or a Toutiao applet as a carrier.

4. A method for borrowing and returning books using a mobile terminal according to claim 1, characterized in that: The library's entrance and exit detection system includes an RFID reading device, and the library books are all provided with RFID tags.

5. A method for borrowing and returning books using a mobile terminal according to claim 1, characterized in that: When performing a book borrowing operation, the book borrowing and returning system will determine whether the book can be borrowed based on the current reader card. The judgment conditions are based on customer needs and the current reader's card status, including whether the number of borrowable books has been exceeded and whether the book can be borrowed.

6. A method for borrowing and returning books using a mobile terminal according to claim 1, characterized in that: The library exit detection system reads the information of the books to be checked out and determines whether the books are borrowed, and gives an alarm according to the actual status. If the borrowing is completed, no alarm will be given, but if the borrowing is not completed, an alarm will be given.

7. A method for borrowing and returning books using a mobile terminal according to claim 6, characterized in that: The library's exit detection system includes an audible and visual alarm device. When the exit detection system detects that an unfinished borrowed book is about to be checked out of the library, the audible and visual alarm device will emit a warning sound and light up a warning light, thereby reminding readers that a book has not been successfully borrowed and needs to be borrowed again or that the book itself cannot be borrowed.

8. A method for borrowing and returning books using a mobile terminal according to claim 1, characterized in that: The library's entrance and exit detection system uses a Redis cache database to store each record, and directly obtains and processes the records from the cache database when needed.

9. A method for borrowing and returning books using a mobile terminal according to claim 8, characterized in that: The Redis cache database of the library's entrance and exit detection system can not only quickly obtain and process data in real time, but also the alarm detection of the exit detection system will not be affected when the network is disconnected or paralyzed. It can also detect outgoing books and sound and light alarms for unborrowed books.

10. A method for borrowing and returning books using a mobile terminal according to claim 1, characterized in that: The information transmission between the entrance and exit detection system of the library and the server adopts two transmission modes: unified distribution and point-to-point forwarding. One mode is selected according to the actual situation. The unified distribution mode is that the entrance information and the exit information are all transmitted to the server, and the server then uniformly distributes them to the entrance and exit detection systems; the point-to-point The distribution mode is that after the entry detection system or the exit detection system receives the response book information, it does not need to pass through the server point-to-point to other entry detection systems and exit detection systems. The two modes mainly affect the data transmission efficiency and time, and have no effect on the actual effect and steps of borrowing and returning books.

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