A high-frequency RFID book borrowing and returning device and method with easy operation

Abstract

The present invention discloses a high-frequency RFID book borrowing and returning device and method with easy operation, wherein the device comprises a book grid unit, a control circuit, a book pendant and a key; the book grid unit comprises a housing, an electric lock and a book grid antenna; the control circuit comprises a microcontroller, a communication interface, an RFID module, an electric lock, etc.; the book pendant is provided with a book tag and a card slot, and can clamp books; the key is provided with a user tag; the book pendant and the key can be inserted into the book grid unit respectively, and the control circuit reads the book tag and the user tag to obtain the corresponding book and user identity information respectively, and controls the electric lock to lock or unlock the book pendant; thereby performing related operations such as book borrowing and returning; the method of the present invention comprises methods for device initialization, borrowing books, returning books, putting books on shelves and taking books off shelves. The present invention is easy to operate, does not require clicking the screen, recognizing text, etc., is suitable for preschool children to operate independently, and supports simultaneous operation by multiple people.

Description

Technical Field

[0001] The present invention relates to the technical field of high-frequency RFID and self-service book borrowing and returning equipment, and in particular to a high-frequency RFID book borrowing and returning device and method which are easy to operate. Background Art

[0002] With the launch of the "National Reading" campaign and the development of the information industry, self-service book borrowing and returning equipment has become increasingly popular. It is not only widely used in various public libraries, but is also common in schools, government agencies, the military and police, and communities.

[0003] However, the various self-service book borrowing and returning devices in the prior art generally have several problems: (1) readers are required to operate a computer by reading or even inputting text to complete the operation. (2) only one person can operate at a time. (3) Book borrowing cabinets usually lock books in the cabinet, which is not convenient for readers to browse quickly.

[0004] The above defects make the device have certain limitations in the use scenarios. For example, kindergartens hope to cultivate children's independent reading habits and expect children to operate the device themselves and choose picture books that they are interested in. However, due to the limited text recognition ability of preschool children, they cannot operate the self-service book borrowing and returning devices currently on the market. Some kindergartens have no choice but to choose teachers or parents to do it for them, which greatly reduces children's enthusiasm for reading and reduces the frequency of children's reading. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose an easy-to-operate high-frequency RFID book borrowing and returning device and method, which does not require clicking on the screen, recognizing text or icons and other similar operations to borrow and return books. Preschool children can use it completely independently, and it supports simultaneous operation by multiple people.

[0006] The technical solutions adopted are:

[0007] An easy-to-use high-frequency RFID book borrowing and returning device of the present invention comprises:

[0008] The book grid unit comprises a fixedly mounted housing, an electric lock and a book grid antenna; the housing is provided with a radial hole, a first axial hole and a second axial hole; the electric lock comprises an electromagnet and a lock tongue, the lock tongue is fixedly mounted at the end of the iron core of the electromagnet and extends into the first axial hole of the housing and can be extended and retracted along the axial direction; the book grid antenna is an antenna of a high-frequency RFID reader;

[0009] The control circuit comprises a microcontroller, a communication interface, an RFID module, an electric lock control circuit, a power supply and an auxiliary circuit; the microcontroller is embedded with special software; the communication interface is used to communicate with other devices; the RFID module is electrically connected to the book grid antenna of the book grid unit; the electric lock control circuit is electrically connected to the electric lock of the book grid unit and controls the power on and off of the electric lock;

[0010] A book hanger, one end of which is provided with a book label and a card slot, and the other end is provided with a book, wherein the book label is a high-frequency RFID tag associated with information of the book clamped on the book hanger;

[0011] A key, one end of which is provided with a user tag, wherein the user tag is a high-frequency RFID tag associated with the identity information of the user corresponding to the key;

[0012] One end of the book hanger with a slot can be inserted into the radial hole of the shell of the book grid unit; when the electric lock of the book grid unit is powered off, its lock tongue extends forward and is locked into the slot of the book hanger to lock the book hanger on the book grid unit; when the electric lock of the book grid unit is powered on, its lock tongue retracts backward and leaves the slot of the book hanger, and the book hanger can be automatically separated from the book grid unit under the action of natural gravity or elastic force;

[0013] One end of the key provided with the user tag can be inserted into the second axial hole of the housing of the book grid unit;

[0014] The book hanger and the key do not affect each other when they are inserted into the book compartment unit respectively;

[0015] After the book hanger and the key are respectively inserted into the book grid unit, the control circuit reads the book tag and the user tag respectively, and obtains the book information and user identity information corresponding to the book hanger and the key respectively, and controls the electric lock to perform operations including borrowing and returning books.

[0016] Furthermore, there are a plurality of book grid units, and the control circuit can control each of the plurality of book grid units, wherein the number of book grid units corresponds to the number of books that can be simultaneously shelved by a single device of the present invention.

[0017] Furthermore, there are multiple book hangers, and each book hanger corresponds to a book.

[0018] Furthermore, there are multiple keys, and each key corresponds to a user.

[0019] Furthermore, the control circuit has multiple microcontrollers, RFID modules, and electric lock control circuits; one of the microcontrollers serves as a main microcontroller, connected to the communication interface and communicating with other devices, and each of the remaining microcontrollers is connected to an RFID module and an electric lock control circuit and communicates with the main microcontroller.

[0020] A method for using the easy-to-operate high-frequency RFID book borrowing and returning device of the present invention comprises a device initialization method, a book borrowing method, a book returning method, a book shelving method and a book de-shelving method.

[0021] The device initialization method includes the following steps:

[0022] S11. Set all electric locks to power-off state;

[0023] S12. Sequentially count all high-frequency RFID tags within the effective range of the book grid antenna of each book grid unit;

[0024] S13. Get user information and book information for each book grid unit, and update the local list of user information and book information stored on the high-frequency RFID book lending device in real time;

[0025] S14. Set to repeat steps S12 to S13.

[0026] The borrowing method includes the following steps:

[0027] S21. Select the book to be borrowed, and insert the reader's key into the second axial hole of the housing corresponding to the book grid unit;

[0028] S22. According to the local list of real-time data, obtain the key corresponding to the book grid unit number and the book information of the book grid unit; check the reader's borrowing rights; if the book grid unit has books and the reader has borrowing rights, continue to execute; otherwise, prompt the user and end the borrowing process;

[0029] S23. Register for borrowing books; if the registration is successful, continue to execute; otherwise, the user is prompted and the borrowing process ends;

[0030] S24. Set the corresponding book grid unit electric lock to the power state, and keep the book pendant and the book grid unit separated for a period of time, and prompt the user to take the book;

[0031] S25. Set the electric lock of the corresponding book unit to the power-off state and end the book borrowing process.

[0032] The book return method includes the following steps:

[0033] S31. Select the location where the book is returned, and insert the book hanger into the radial hole of the housing corresponding to the book grid unit;

[0034] S32. According to the real-time data of the local list, obtain the information of the newly added books and determine that it is a book return operation; perform the book return registration; prompt the user and end the book return process.

[0035] The method for putting books on the shelf includes the following steps:

[0036] S41. Select the location of the bookshelf, insert the book pendant into the radial hole of the housing corresponding to the book grid unit;

[0037] S42. According to the real-time data of the local list, the information of the newly added books is obtained, and it is determined that it is a book shelf operation; the book shelf registration is performed; the user is prompted and the book shelf process is ended.

[0038] The method of removing books from shelves includes the following steps:

[0039] S51. Select the book to be removed from the shelf, insert the administrator user's key into the second axial hole of the housing corresponding to the book grid unit;

[0040] S52. According to the local list of real-time data, get the key corresponding to the book grid unit number and the book grid unit information; determined by the user information is an administrator operation, if the book grid unit has books, continue to execute; otherwise, prompt the user and end the book off the shelf process;

[0041] S53. Register the book to be removed from the shelves; if the registration is successful, continue to execute; otherwise, the user is prompted and the book removal process ends;

[0042] S54. Set the corresponding book grid unit electric lock is powered on, and keep the book pendant and book grid unit separated for a period of time, and prompt the user to take the book;

[0043] S55. Set the electric lock of the corresponding book unit to the power-off state and end the book borrowing process.

[0044] The beneficial effects of the present invention are:

[0045] When borrowing books, you can quickly browse the books you are interested in on the device and then select the books. As long as you insert the key with the reader's identity information into the keyhole of the corresponding book unit, the book will automatically separate from the device and let the reader take it away; to return the book, just insert the book pendant connected to the book into the empty book unit on the device; and it supports multiple people to operate at the same time. The present invention is extremely easy to use and is particularly suitable for preschool children to operate independently. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0047] Figure 1 The present invention is a block diagram of a high-frequency RFID book borrowing and returning device that is easy to operate.

[0048] Figure 2 It is a structural schematic diagram of the book grid unit of the present invention.

[0049] Figure 3 This is a schematic diagram of the structure of the electric control lock of Example 1.

[0050] Figure 4 Schematic diagram of the book grid antenna of Example 1.

[0051] Figure 5 Schematic diagram of the control circuit of Example 1.

[0052] Figure 6 This is a schematic diagram of the structure of the book hanger of Example 1.

[0053] Figure 7 This is a schematic diagram of the structure of the key of Example 1.

[0054] Figure 8 This is a schematic diagram of the structure of locking the book hanger of Example 1.

[0055] Fig. 9 This is a schematic diagram of the structure of unlocking the book pendant in Example 1.

[0056] Fig.10 This is a cross-sectional diagram of the positional relationship between the book grid antenna, the book tag and the user tag of Example 1.

[0057] Fig.11 This is a top view schematic diagram of the positional relationship between the book grid antenna, the book tag and the user tag of Example 1.

[0058] Fig.12 This is a schematic diagram of the control circuit of Example 2.

[0059] Fig.13 This is an appearance effect diagram of the easy-to-operate high-frequency RFID book borrowing and returning device of Example 2. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only preferred embodiments of the present invention, not all 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. Example 1

[0061] Reference Figure 1 As shown, a high-frequency RFID book borrowing and returning device with easy operation of the present invention comprises a book grid unit 1, a control circuit 2, a book hanger 3 and a key 4.

[0062] In order to explain the working principle and method of the present invention step by step, in this embodiment: the book grid units 1 are multiple, the number is 8, and they are numbered from 1 to 8 in sequence, corresponding to a single book lending and returning device that can simultaneously shelve 8 books; the book hangers 3 are multiple, the number is 100, corresponding to 100 books used on the device of this embodiment; the keys 4 are multiple, the number is 10, corresponding to 10 users using the device of this embodiment, of which 1 user is an administrator and 9 users are ordinary readers.

[0063] Please refer to the attached Figure 2 The book compartment unit 1 includes a housing 10, an electric lock 11 and a book compartment antenna 12. The housing 10 is provided with a radial hole 101, a first axial hole 102 and a second axial hole 103. In this embodiment, the housing 10 is roughly cylindrical, the radial hole 101 and the first axial hole 102 are both circular, and the second axial hole 103 is flat. The specific structural elements of the housing 10 need to be considered in overall coordination, and ordinary technicians in this field can refine them without departing from the spirit of the invention.

[0064] Please refer to the attached Figure 3The electric lock 11 comprises an electromagnet 110 and a lock tongue 111, wherein the lock tongue 111 is fixedly mounted at the end of an iron core 112 of the electromagnet. The electromagnet 110 also has a spring 113. When the electric lock is powered off, due to the elastic effect of the spring 113, the iron core 112 drives the lock tongue 111 to extend forward, and when the electric lock is powered on, the suction force generated by the current causes the iron core 112 to drive the lock tongue 111 to retract backward. Obviously, the "electric lock is powered on" mentioned in this specification refers to "powering on the coil of the electromagnet 110 of the electric lock 11", "electric lock is powered off" refers to "powering off the coil of the electromagnet 110 of the electric lock 11", "electric lock power-on state" refers to "the state after the coil of the electromagnet 110 of the electric lock 11 is powered on for a period of time (generally 1 to several seconds)", and "electric lock power-off state" refers to "the state after the coil of the electromagnet 110 of the electric lock 11 is powered off for a period of time (generally 1 to several seconds)". The electromagnet 110 is a common frame electromagnet, and the selection is mainly based on the consideration of structural coordination, and the details need not be repeated.

[0065] Please refer to the attached Figure 4 The book grid antenna 12 is an antenna for a high-frequency RFID reader / writer, and its typical operating frequency is 13.56Mhz. It includes an induction coil 120, an impedance matching circuit 121, and a radio frequency interface 122. The induction coil 120 is a closed area surrounded by conductive materials. Common shapes are rectangles, chamfered rectangles, rounded rectangles, circles, ellipses, runway shapes, etc. Common manufacturing methods are wire winding, metal etching, etc. Preferably, the induction coil 120 described in this embodiment is a rectangular coil with multiple turns etched on a printed circuit board. The impedance matching circuit 121 is composed of passive components such as capacitors and resistors, and is provided to meet the impedance matching requirements of the circuit. The book grid antenna 12 is connected to the control circuit 2 via the radio frequency interface 122.

[0066] Please refer to the attached Figure 5 The control circuit 2 includes a microcontroller 20, a communication interface 21, an RFID module 22, an electric lock control circuit 23, a power supply 24 and an auxiliary circuit 25.

[0067] The microcontroller 20 has a dedicated firmware.

[0068] The number is STM32F407VGT6.

[0069] The microcontroller 20 communicates with other devices through the communication interface 21, and the communication interface 21 can be various wired or wireless interfaces; it can be selected to be connected to the Internet; it can also be selected to be connected to a dedicated Internet of Things (such as ZIGBEE, LORA, etc.); it can also be selected to be connected to a computer host; preferably, the communication interface of this embodiment is an Ethernet wired interface connected to the Internet.

[0070] The RFID module 22 has the ability to read the corresponding high-frequency RFID tag. The typical operating frequency of the high-frequency RFID tag is 13.56Mhz, and common standards include ISO14443A, ISO15693, ISO14443B, etc. Because the most widely used high-frequency RFID tags in the library field currently follow the ISO15693 standard, the software of this embodiment is designed based on the ISO15693 standard, but other types of high-frequency RFID tags can be used instead. The RFID module 22 has N RFID antenna radio frequency interfaces 27, which can be connected to the book grid antennas 12 of the N book grid units 1 respectively. The N book grid antennas work in time-sharing mode. When the control circuit 2 reads the high-frequency RFID tag, it can know the number of the book grid unit to which the book grid antenna belongs.

[0071] Please note: the RFID module 22 of the present invention does not need to perform the operation of writing data to the high-frequency RFID tag, has high reliability, and can be set to a lower radio frequency power. In this embodiment, the transmission power of the RFID module 22 is about 0.2W. One of the advantages of using a lower transmission power is that it is easy to control the effective range of the book grid antenna 12 to prevent misreading of high-frequency RFID tags outside the set area.

[0072] The electric lock control circuit 23 has N electric lock control interfaces 26, which can be connected to the electromagnets 110 of the electric locks 11 of the N book compartment units 1 and control the power on and off thereof.

[0073] In the above, N is a natural number not less than 1, and N is 8 in this embodiment.

[0074] The power supply 24 is used to provide various regulated power supplies required by the control circuit 2 , and in this embodiment, includes DC 12V, DC 5V, DC 3.3V, etc.

[0075] The auxiliary circuit 25 is other conventional circuits that actually exist in the control circuit 2 but are not described in this specification, such as a crystal oscillator circuit required for the operation of the microcontroller 20.

[0076] Please refer to the attached Figure 6, one end of the book hanger 3 is provided with a book label 30 and a slot 31 that cooperates with the lock tongue 111 of the electric lock 11, and the other end is provided with a book clamping component 32, and the end with the slot can be inserted into the radial hole 101 of the shell 10 of the book grid unit 1. In this embodiment, the body of the book hanger 3 is cylindrical and made of ABS plastic. The slot 31 is an annular groove with a width of 5mm and a depth of 2mm on the cylindrical body, which can just be inserted into the book grid unit 1, and the direction does not need to be considered when inserting. The specific structural elements of the book hanger 3 need to consider the overall coordination, and ordinary technicians in this field can refine them without departing from the spirit of the invention.

[0077] The device of this embodiment is mainly used for preschool children. The picture books read by children are generally thin and light, so a round hole is set on the book. The book clamping component 32 is an ordinary hanging rope, and a ring or other shapes can also be used as long as it can clamp the book and does not affect reading and use.

[0078] The book tag 30 is a high-frequency RFID tag that can be read by the RFID module 22. Preferably, the book tag of this embodiment is a circle with a diameter of 9 mm, while the common specification of the high-frequency book tag used in public libraries is a square with a side length of about 50 mm. The advantages of using a miniaturized tag in the present invention are: (1) it is easy to embed it in the book hanger; (2) it is easy to control the sensing distance to prevent the tag from being misread outside the set area.

[0079] The book tag 30 is set on the book hanger 3, and has certain requirements for position and direction. The principle is that during normal reading, the book tag and the book grid antenna should be as close as possible, and the planes of the two should be kept as parallel as possible. In this embodiment, as long as the plane of the book tag 30 and the end face of the book hanger 3 are roughly parallel, the book tag 30 is buried in the book hanger 3 as close to the end as possible.

[0080] Before the book tag 30 is used on the device of the present invention, it is necessary to associate the information of the book clipped on the book hanger 3 in advance. The book information generally includes property number, book title, ISBN number, etc. There are two association methods: (1) writing the book information into the data area of ​​the book tag. (2) matching the book information with the unique serial number (UID) of the book tag, and saving the data to other devices that communicate with the device. Preferably, the present embodiment adopts the method (2), and since the device of the present embodiment is connected to the Internet, the data is saved in a data server that is also connected to the Internet, so that the number of books is not limited by the local resources of the device of the present embodiment.

[0081] Please refer to the attached Figure 7, the key 4 is provided with a user tag 40 at one end and can be inserted into the second axial hole 103 of the shell 10 of the book grid unit 1, and the other end is provided with a handle for easy grasping and wearing. Preferably, the key 4 of this embodiment is flat and can be inserted into the second axial hole 103 in a parallel direction. The key 4 is inserted without distinguishing between the front and back sides, but cannot be inserted after deviating from the parallel direction by a certain angle. The specific structural elements of the key 4 also need to consider the overall coordination and the characteristics of convenience, practicality and beauty of carrying. Ordinary technicians in this field can refine them without departing from the spirit of the invention.

[0082] The user tag 40 is a high-frequency RFID tag that can be read by the RFID module 22. Preferably, in this embodiment, the user tag 40 and the book tag 30 have exactly the same model and specifications.

[0083] The user tag 40 is set on the key 4, and has certain requirements for position and direction. The principle is that during normal reading, the user tag and the book grid antenna should be as close as possible, and the planes of the two should be kept as parallel as possible. In this embodiment, as long as the plane of the user tag 40 and the flat plane of the key 4 body are roughly parallel, the user tag 40 can be buried in the key 4 as close to the end as possible.

[0084] Before the user tag 40 is used on the device of the present invention, it is necessary to associate the user's information in advance. The user information generally includes name, number of books allowed to be borrowed, validity period, etc. There are two association methods: (1) writing the user information into the data area of ​​the user tag. (2) matching the user information with the unique serial number (UID) of the user tag, and saving the data to other devices that communicate with the device. Preferably, the present embodiment adopts the method (2), and since the device of the present embodiment is connected to the Internet, the data is saved in a data server that is also connected to the Internet, so that the number of users is not limited by the local resources of the device of the present embodiment.

[0085] Please refer to the attached Figure 8, the lock tongue 111 of the electric lock 11 extends into the first axial hole 102 of the shell 10 and can be extended and retracted along the axial direction. The lock tongue of this embodiment is in the shape of a rectangular parallelepiped, and can also be semicircular or "U" shaped, etc., which can cooperate with the card slot 31 of the book hanger 3 to ensure smooth locking and withdrawal. When the electric lock 11 is in the power-off state, its lock tongue 111 extends forward, and the end of the book hanger 3 provided with the card slot 31 is inserted into the radial hole 101 of the shell 10. The external force causes the spring 113 to contract, so that the lock tongue 111 retreats a short distance, so that the book hanger 3 can enter smoothly. After the book hanger 3 reaches the set position, due to the elastic effect of the spring 113, the lock tongue 111 extends forward and is stuck in the card slot 31 of the book hanger 3, forming a locked state, and the book hanger 3 is locked on the book grid unit 1. Please refer to the attached Fig. 9 When the electric lock 11 is powered on, its lock tongue 111 retracts and leaves the card slot 31 of the book hanger 3, forming an unlocked state. Preferably, in this embodiment, the book hanger 3 is inserted into the housing 10 from bottom to top. In the unlocked state, due to the effect of natural gravity, the book hanger 3 automatically falls down together with the book and separates from the book compartment unit 1. If it is necessary to set the book hanger 3 to be inserted into the housing 10 from top to bottom, an elastic mechanism can be provided on the housing 10 so that the book hanger 3 can be automatically popped out and separated from the book compartment unit 1 in the unlocked state.

[0086] Attached Fig.10 and attached Fig.11 The schematic diagrams of the cross-section and top view respectively show the positional relationship between the book grid antenna 12 and the book tag 30 and the user tag 40 of the present embodiment. After the book hanger 3 and the key 4 are respectively inserted into the housing 10 of the book grid unit 1, the book tag 30 on the book hanger 3 and the user tag 40 on the key 4 are respectively close to the induction coil 120 of the book grid antenna 12 of the book grid unit 1 and are roughly parallel. The control circuit 2 can read the book tag 30 and the user tag 40 respectively through the book grid antenna 12. The size of the induction coil 120 of the book grid antenna 12 should not be set too large, and its outer contour can just cover the projections 30' and 40' of the book tag 30 and the user tag 40 on the plane of the book grid antenna. In use, after the book hanger 3 or the key 4 respectively leaves the book grid unit 1, the book tag 30 or the user tag 40 respectively leaves the effective range of the book grid antenna 12 and cannot be read.

[0087] In summary: in this embodiment, the control circuit 2 can obtain the book information on each book grid unit 1 by reading the book tag 30 inserted into each book grid unit 1; the control circuit 2 can also obtain the user information on each book grid unit 1 by reading the user tag 40 inserted into each book grid unit 1; the control circuit 2 can also control the electric lock 11; the control circuit 2 can also access the data on other devices through the communication interface 21, and the other devices in this embodiment are data servers connected to the Internet. Therefore, the easy-to-operate high-frequency RFID book borrowing and returning device of this embodiment has corresponding functions and can perform related operations such as book borrowing and returning.

[0088] The invention discloses a method for using a high-frequency RFID book borrowing and returning device which is easy to operate, comprising a device initialization method, a book borrowing method, a book returning method, a book shelving method and a book de-shelving method.

[0089] The device initialization method includes the following steps:

[0090] S11. Set all electric locks to power-off state;

[0091] S12. Check the user information and book information of each book grid unit in sequence. The specific method of checking a book grid unit is: check all high-frequency RFID tags within the effective range of the book grid antenna of the book grid unit; if there is a book tag, it is determined that the book hanger has been inserted into the book grid unit, otherwise, it is determined that there is no book in the book grid unit; if there is a user tag, it is determined that the key has been inserted into the book grid unit, otherwise, it is determined that there is no key in the book grid.

[0092] S13. Obtain the user information and book information of each book grid unit, and update the local list of user information and book information stored in the high-frequency RFID book lending and returning device in real time. In this embodiment: the content of the local list includes the number of each book grid unit; whether there is a book tag and a user tag; and the unique serial number (UID) of the book tag and the user tag; and the book information corresponding to the book tag; and the user information corresponding to the user tag. In each round of inventory, if the current information of a book grid unit is found to be inconsistent with the previously saved local list, the data in the local list is updated accordingly. In this embodiment: each time a newly added book tag or user tag is read, it is connected to the data server on the Internet and searched according to the unique serial number (UID) of the book tag or user tag to obtain the corresponding book information or user information. If the corresponding information cannot be found, the tag is determined to be illegal, and the specific business related to the tag will not be processed subsequently.

[0093] S14. Set to repeat steps S12 to S13.

[0094] Please note: In this embodiment, the local list only stores the data corresponding to the book pendants and keys that have been inserted into the device, which is usually only a small part of all books and users. The data of all books and users are stored in the data server on the Internet, so their number is not limited by the local resources of the embodiment device.

[0095] The borrowing method includes the following steps:

[0096] S21. Select a book to be borrowed, and insert the reader's key into the second axial hole of the shell of the corresponding book grid unit.

[0097] S22. According to the real-time data of the local list, obtain the number of the book unit corresponding to the key and the information of the book in the book unit; check the borrowing authority of the reader user; if there is a book in the book unit and the reader user has the borrowing authority, continue to execute; otherwise, prompt the user and end the borrowing process.

[0098] S23. Register for borrowing books; if the registration is successful, continue to execute; otherwise, prompt the user and end the borrowing process. In this embodiment, the book borrowing registration needs to be connected to the data server on the Internet for networking operation, so multiple embodiments of the device are used at the same time and the data can be kept synchronized.

[0099] S24. Set the electric lock of the corresponding book grid unit to the power-on state, and keep it powered for a period of time (3 seconds in this embodiment) to separate the book hanger and the book grid unit, and prompt the user to take the book.

[0100] S25. Set the electric lock of the corresponding book unit to the power-off state and end the book borrowing process.

[0101] The book return method includes the following steps:

[0102] S31. Select a location for returning books, and insert the book hanger into the radial hole of the shell of the corresponding book grid unit.

[0103] S32. According to the real-time data of the local list, the information of the newly added book is obtained, and the book return operation is determined in combination with the historical operation record of the book; the book return registration is performed; the user is prompted and the book return process is ended. In this embodiment, it is necessary to connect to the data server on the Internet to obtain the historical operation record of the book and perform the book return registration network operation, so multiple embodiments of the device are used at the same time, and the data can be kept synchronized.

[0104] The method for putting books on the shelf includes the following steps:

[0105] S41. Select a location for placing books on the shelf, and insert the book hanger into the radial hole of the shell of the corresponding book grid unit.

[0106] S42. According to the real-time data of the local list, the information of the newly added book is obtained, and the historical operation record of the book is combined to determine whether it is a book shelving operation; the book shelving registration is performed; the user is prompted and the book shelving process is ended. In this embodiment, it is necessary to connect to the data server on the Internet to obtain the historical operation record of the book and perform the book shelving registration network operation, so multiple embodiments of the device are used at the same time, and the data can be kept synchronized.

[0107] The method of removing books from shelves includes the following steps:

[0108] S51. Select the book to be removed from the shelf, and insert the administrator user's key into the second axial hole of the shell of the corresponding book grid unit.

[0109] S52. According to the real-time data of the local list, obtain the number of the book unit corresponding to the key and the information of the book in the book unit; determine whether it is an administrator operation based on the user information. If there is a book in the book unit, continue to execute; otherwise, prompt the user and end the book removal process.

[0110] S53. Register the book to be removed from the shelf; if the registration is successful, continue to execute; otherwise, prompt the user and end the book removal process. In this embodiment, the book removal registration needs to be connected to the data server on the Internet for networking operation, so multiple embodiments of the device are used simultaneously and the data can be kept synchronized.

[0111] S54. Set the electric lock of the corresponding book grid unit to the power-on state, and keep it powered for a period of time (3 seconds in this embodiment) to separate the book hanger and the book grid unit, and prompt the user to take the book.

[0112] S55. Set the electric lock of the corresponding book unit to the power-off state and end the book borrowing process.

[0113] Please note: when multiple people operate at the same time, each person only operates the book grid unit corresponding to him / her. The device of this embodiment can execute multiple identical or different above-mentioned processes at the same time, so the present invention supports multiple people's operation. For example: more than two people borrow books at the same time, one person borrows books and one person returns books, etc. The number of people actually supported to operate at the same time is limited by the use scenario (such as venue restrictions, etc.) and the hardware and software parameters of the embodiment (such as the number of book grid units, the number of software threads, etc.). Example 2

[0114] Example 1 describes the working principle and method of the present invention in detail. This example is a high-frequency RFID book borrowing and returning device that is easy to operate and can be directly used in commercial product production. Its appearance is shown in the attached figure. Fig.13 shown.

[0115] In this embodiment: the book grid units 1 are 96 in number and are marked in sequence from 1 to 96. They are physically arranged in 3 layers, with 32 books on each layer. A single book borrowing and returning device can simultaneously put 96 books on the shelves. The number of the book hangers 3 is 2000, corresponding to 2000 books; the number of the keys 4 is 220, corresponding to 220 users, of which 20 users are administrators (kindergarten teachers) and 200 users are ordinary readers (kindergarten children).

[0116] Please note: the setting of 20 teachers and 200 children is determined by the actual usage scenario and can be expanded at any time in the future and is not limited by the device itself of this embodiment.

[0117] In this embodiment, each of the book grid units 1, book hangers 3, and keys 4 are the same as those in Embodiment 1 and will not be described in detail.

[0118] In this embodiment, since the number of the book grid units 1 is greater than that in the embodiment 1, the control circuit 2 needs to be expanded accordingly on the basis of the embodiment 1, but it does not deviate from the technical principles and craftsmanship described in the embodiment 1.

[0119] Please see attached Fig.12 In this embodiment, the control circuit 2 includes: multiple microcontrollers 20, a communication interface 21, multiple RFID modules 22, multiple electric lock control circuits 23, a power supply 24 and an auxiliary circuit 25.

[0120] Among them, the communication interface 21, the power supply 24, the auxiliary circuit 25, each of the RFID modules 22 and each of the electric lock control circuits 23 are the same as those in Example 1 and will not be described in detail.

[0121] For the convenience of description: M of the microcontrollers 20 are numbered separately and named "microcontroller 20-1#" to "microcontroller 20-M#", and are called "slave microcontrollers"; and the remaining microcontroller 20 is numbered separately and named "microcontroller 20-0#", and is called "master microcontroller"; all M RFID modules 22 are numbered separately and named "RFID module 22-1#" to "RFID module 22-M#"; all M electric lock control circuits 23 are numbered separately and named "electric lock control circuit 23-1#" to "electric lock control circuit 23-M#".

[0122] In the above description, M is a natural number greater than 1, and M is 12 in this embodiment.

[0123] Please refer to the attached Fig.12, the microcontroller 20-0# (master microcontroller) is connected to the communication interface 21 alone, and only this microcontroller can directly access the Internet; all microcontrollers 20 are electrically connected, and in this embodiment, they are connected through an RS485 bus, and can also be connected through a CAN bus or the like; the master microcontroller communicates with the slave microcontrollers separately, so each slave microcontroller can indirectly access the Internet through the master microcontroller.

[0124] For the convenience of description, a circuit combination consisting of a microcontroller 20, an RFID module 22, and an electric lock control circuit 23 is called a "control combination", and all control combinations are numbered and named "control combination-1#" to "control combination-M#", respectively, and there are a total of M control combinations.

[0125] Each control combination can read the user information and book information on the N book grid units 1 and control the electric locks on these book grid units 1. The working method is basically the same as the control circuit 2 of Example 1, except that all slave microcontrollers 20 can only access the Internet indirectly.

[0126] In the above description, N is a natural number greater than 1, and N is 8 in this embodiment.

[0127] In summary, as attached Fig.12 The control circuit 2 shown meets the requirements of M×N (96 in this embodiment) book grid units. Its device initialization method, book borrowing method, book returning method, book shelving method and book de-shelving method are the same as those in Embodiment 1 and will not be described in detail.

[0128] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the scope of protection of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-frequency RFID book borrowing and returning device that is easy to operate, characterized in that: include: The book grid unit comprises a fixedly mounted housing, an electric lock and a book grid antenna; the housing is provided with a radial hole, a first axial hole and a second axial hole; the electric lock comprises an electromagnet and a lock tongue, the lock tongue is fixedly mounted at the end of the iron core of the electromagnet and extends into the first axial hole of the housing and can be extended and retracted along the axial direction; the book grid antenna is an antenna of a high-frequency RFID reader; The control circuit comprises a microcontroller, a communication interface, an RFID module, an electric lock control circuit, a power supply and an auxiliary circuit; the microcontroller is embedded with special software; the communication interface is used to communicate with other devices; the RFID module is electrically connected to the book grid antenna of the book grid unit; the electric lock control circuit is electrically connected to the electric lock of the book grid unit and controls the power on and off of the electric lock; A book hanger, one end of which is provided with a book label and a card slot, and the other end is provided with a book, wherein the book label is a high-frequency RFID tag associated with information of the book clamped on the book hanger; A key, one end of which is provided with a user tag, wherein the user tag is a high-frequency RFID tag associated with the identity information of the user corresponding to the key; One end of the book hanger with a slot can be inserted into the radial hole of the shell of the book grid unit; when the electric lock of the book grid unit is powered off, its lock tongue extends forward and is locked into the slot of the book hanger to lock the book hanger on the book grid unit; when the electric lock of the book grid unit is powered on, its lock tongue retracts backward and leaves the slot of the book hanger, and the book hanger can be automatically separated from the book grid unit under the action of natural gravity or elastic force; One end of the key provided with the user tag can be inserted into the second axial hole of the housing of the book grid unit; The book hanger and the key do not affect each other when they are inserted into the book compartment unit respectively; After the book hanger and the key are respectively inserted into the book grid unit, the control circuit reads the book tag and the user tag respectively, and obtains the book information and user identity information corresponding to the book hanger and the key respectively, and controls the electric lock to perform operations including borrowing and returning books.

2. The easy-to-operate high-frequency RFID book borrowing and returning device according to claim 1 is characterized in that: There are a plurality of book grid units, and the control circuit can control each book grid unit.

3. The easy-to-operate high-frequency RFID book borrowing and returning device according to claim 1, characterized in that: There are multiple book hangers, and each book hanger corresponds to a book.

4. The easy-to-operate high-frequency RFID book borrowing and returning device according to claim 1, characterized in that: There are multiple keys, and each key corresponds to a user.

5. The easy-to-operate high-frequency RFID book borrowing and returning device according to claim 2, characterized in that: The control circuit has multiple microcontrollers, RFID modules and electric lock control circuits respectively; one of the microcontrollers serves as a main microcontroller, connected to the communication interface and communicating with other devices, and each of the remaining microcontrollers is connected to one RFID module and one electric lock control circuit respectively and communicates with the main microcontroller.

6. A method for using the easy-to-operate high-frequency RFID book borrowing and returning device according to any one of claims 1 to 5, characterized in that: It includes a device initialization method, a book borrowing method, a book returning method, a book putting on the shelf method and a book taking off the shelf method; wherein the device initialization method includes the following steps: S11. Set all electric locks to power-off state; S12. Sequentially count all high-frequency RFID tags within the effective range of the book grid antenna of each book grid unit; S13 obtains user information and book information for each book grid unit; real-time update of user information and book information stored in the local list of high-frequency RFID book lending device; S14. Set to repeat steps S12 to S13; The borrowing method includes the following steps: S21. Select the book to be borrowed, and insert the reader's key into the second axial hole of the housing corresponding to the book grid unit; S22. According to the local list of real-time data, obtain the key corresponding to the book grid unit number and the book information of the book grid unit; check the reader's borrowing rights; if the book grid unit has books and the reader has borrowing rights, continue to execute; otherwise, prompt the user and end the borrowing process; S23. Register for borrowing books; If the registration is successful, continue to execute; otherwise, prompt the user and end the book borrowing process; S24. Set the corresponding book grid unit electric lock to the power state, and keep the book pendant and the book grid unit separated for a period of time, and prompt the user to take the book; S25. Set the electric lock corresponding to the book grid unit to the power-off state and end the book borrowing process; The book return method includes the following steps: S31. Select the location where the book is returned, and insert the book hanger into the radial hole of the housing corresponding to the book grid unit; S32. According to the local list of real-time data, obtain the information of the newly added books and determine that it is a book return operation; register the book return; Prompt the user and end the book return process; The book listing method includes the following steps: S41. Select the location of the bookshelf, insert the book pendant into the radial hole of the housing corresponding to the book grid unit; S42. According to the real-time data of the local list, obtain the information of the newly added books, determine that it belongs to the book shelf operation; register the book shelf; prompt the user and end the book shelf process; The method of removing books from shelves includes the following steps: S51. Select the book to be removed from the shelf, insert the administrator user's key into the second axial hole of the housing corresponding to the book grid unit; S52. According to the local list of real-time data, get the key corresponding to the book grid unit number and the book grid unit information; determined by the user information is an administrator operation, if the book grid unit has books, continue to execute; otherwise, prompt the user and end the book off the shelf process; S53. Register the removal of books from shelves; If the registration is successful, continue to execute; otherwise, prompt the user and end the book removal process; S54. Set the corresponding book grid unit electric lock is powered on, and keep the book pendant and book grid unit separated for a period of time, and prompt the user to take the book; S55. Set the electric lock of the corresponding book unit to the power-off state and end the book borrowing process.

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