Multimedia classroom microphone and IC card lending and borrowing device

Abstract

The application discloses a multimedia classroom microphone and IC card lending and returning device and system, which comprises a hardware part, the hardware part comprises a microphone and IC card self-service lending and returning machine body shell, and the front surface of the microphone and IC card self-service lending and returning machine body shell is uniformly provided with a plurality of microphone slot modules, and each microphone slot module is provided with a horizontal slope of °. The microphone and IC card lending and returning device and system can be arranged at the adjacent wall of the entrance of each teaching building, and the microphone and IC card can be lent and returned without manual processing and information filling, and the microphone or the IC card can be selected to be lent or the microphone and the IC card can be selected to be lent together. The system supports a teacher to use a teacher campus card to lend, and can remind the teacher to return the article after the article is not returned for a long time after being lent. When the article is returned, the article can be placed in the lending cabinet to complete the returning, the lending and returning statistical efficiency is effectively improved, and the teachers queuing and waiting and the front desk staff checking time are reduced.

Description

Technical Field

[0001] This invention relates to the field of offline self-service borrowing and returning management platform technology, and in particular to a multimedia classroom microphone and IC card borrowing and returning device. Background Technology

[0002] Currently, most universities in China use multimedia classrooms, which are equipped with teaching-specific audio equipment, desktop computers and monitors, and projectors. To prevent the disorderly use of multimedia classrooms and to avoid the loss or theft of microphones, the microphones are placed at the manual borrowing and returning management office in the teaching building. Teachers need to go there to borrow or return them before and after class.

[0003] Because universities have a large number of classes, the process of teachers filling out their individual class information at the management office front desk during peak hours is inefficient, often resulting in long queues at the borrowing and returning desk. This wastes teachers' time, causes inconvenience, and increases the school's labor costs, as well as the time required for administrators to locate and verify unreturned microphones and IC cards. Therefore, this application proposes a multimedia classroom microphone and IC card borrowing and returning device, providing a new technical solution to address the aforementioned technical problems. Summary of the Invention

[0004] Therefore, it is necessary to provide a multimedia classroom microphone and IC card borrowing and returning device to address the aforementioned technical problems. This device can be installed near the entrance of each teaching building, eliminating the need for manual processing and information filling when borrowing and returning microphones and IC cards. Users can choose to rent only the microphone or the IC card, or both together. The device supports teachers using their campus cards for borrowing and returning items, and can remind teachers to return items if they are not returned for an extended period. Returning the items simply requires placing them in the locker, effectively improving the efficiency of borrowing and returning statistics and reducing the time teachers spend queuing and front desk staff verifying information.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A microphone and IC card borrowing and returning device for multimedia classrooms, which is used for borrowing and returning microphones in multimedia classrooms.

[0007] The multimedia classroom microphone and IC card borrowing and returning device specifically includes:

[0008] The hardware component includes a microphone and IC card self-service borrowing and returning machine housing. Multiple microphone slot modules, IC card swallowing modules, and card dispensing modules are evenly arranged on the front of the housing. Each microphone slot module is horizontally angled at a certain angle and is fully tenon-and-groove joined to the housing. The IC card swallowing and dispensing modules are horizontally positioned, with a cavity at the rear for holding the IC card. The cavity contains an IC card reset mechanism.

[0009] Each microphone slot module is equipped with a microphone pusher plate device for pushing the microphone out of the microphone slot module and retrieving the microphone; the microphone pusher plate device is equipped with a pressure sensor for detecting whether a microphone is inserted into the microphone slot module.

[0010] The microphone pusher device includes a microphone slot housing. A pick-up / placement window is provided at the front end of the microphone slot housing. A movable baffle is provided at the front end of the microphone slot housing and inside the pick-up / placement window. A recessed cavity is provided at the lower part of the end of the microphone slot housing away from the movable baffle. A slot lifting structure is provided within the recessed cavity. A camera scanning module is provided at the upper end of the microphone slot housing, used to confirm the returned microphone's serial number by scanning the QR code on the microphone when it is returned.

[0011] The IC card swallowing module includes an IC card swallowing rack, which is equipped with a guide wheel, a drive wheel, an IC card NFC recognition module, and an infrared sensing module.

[0012] The IC card dispensing module includes an IC card dispensing rack, which is also equipped with guide wheels, drive wheels, and an IC card NFC recognition module.

[0013] The IC card reset mechanism includes a reset plate, a reset base, a slide bar, a lead screw, a synchronous motor, and a servo motor.

[0014] LED indicator lights are embedded on the front of the microphone and IC card self-service borrowing and returning machine housing, above each microphone slot module; a face recognition module, a display, and an NFC card swiping module are respectively installed on the front of the microphone and IC card self-service borrowing and returning machine housing, on one side.

[0015] In a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention, the lifting structure includes a microphone slot lifting platform. The microphone slot lifting platform is located inside the microphone slot housing and at the position of the recessed cavity. All four corners of the microphone slot lifting platform extend to the outside of the microphone slot housing. A microphone slot lower cover plate is provided at the bottom of the microphone slot housing and at the position of the recessed cavity. A sliding rod one and a sliding rod two are provided on each side of the microphone slot housing. The two ends of the sliding rod one and the sliding rod two are respectively fixedly connected to the microphone slot housing and the microphone slot lower cover plate. The microphone slot lifting platform is located inside the microphone slot housing and at the position of the recessed cavity. The microphone slot housing is vertically slidably connected to a corresponding sliding rod on the outer side. A lead screw is also provided on the outer side of the microphone slot housing, located in the recessed cavity. The lead screw is rotatably connected to the microphone slot housing. A synchronous motor is provided below the lead screw. The synchronous motor is fixedly connected to the lower cover of the microphone slot via a bracket. The output end of the synchronous motor is fixedly connected to the lead screw. An extension block is provided on the side of the microphone slot lifting platform. The extension block is positioned corresponding to the lead screw. The end of the extension block away from the microphone slot lifting platform extends to the outer side of the microphone slot housing. The extension block is threadedly connected to the lead screw.

[0016] In a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention, a push plate body is further provided inside the microphone slot housing. The push plate body is slidably connected along the length direction of the microphone slot lifting platform. A wheel assembly is rotatably connected at the lower end of the microphone slot lifting platform. The two wheel assemblies are connected by a conveyor belt. The bottom of the push plate body is fixedly connected to the conveyor belt. The pressure sensor is located on the side of the push plate body facing the movable baffle. Position sensors are provided at both ends of the inner side of the microphone slot lifting platform to detect the movement position of the push plate body.

[0017] As a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention, it also includes a software component, which includes a background user login module, a network communication module, a processor, a background database module, and a background operating system; the background user login module, the network communication module, and the background database module are all electrically connected to the processor.

[0018] In a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention, the LED indicator, face recognition module, display, NFC card swiping module, synchronous motor, pressure sensor, position sensor, wheel assembly, and camera scanning module are all electrically connected to the processor.

[0019] As a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention, the data stored in the background database module includes at least the teacher's identity ID, microphone number, and IC card number. When the microphone is rented, the teacher's identity ID is written into the background database to facilitate finding the microphone and IC card renter. When the microphone and IC card are returned, the identity ID in the microphone and IC card database is cleared.

[0020] In a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention, the IC card reset mechanism comprises two sliding rods (three), a lead screw, a synchronous motor (two), an upper base, a lower base, a servo motor, a reset plate, and a reset base. The upper and lower ends of the sliding rods (three) are fixedly connected to the upper base and the lower base, respectively. The upper and lower ends of the lead screw are rotatably connected to the upper base and the lower base, respectively. A synchronous motor (two) is disposed above the lead screw. The synchronous motor (two) is fixedly connected to the upper base via a bracket. The reset base is slidably connected to the two sliding rods (three), and the reset base is threadedly connected to the lead screw. The reset plate is located on one side of the reset base, and the reset plate is rotatably connected to the reset base via a pin. The servo motor is fixedly connected to the reset base, and the output shaft of the servo motor is fixedly connected to the reset plate.

[0021] In a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention, the IC card swallowing module consists of four guide wheels and one drive wheel. The guide wheels are symmetrically arranged on the upper and lower sides of the IC card swallowing rack. The drive wheel is located at the lower center of the IC card swallowing rack. An IC card NFC identification module is provided inside the IC card swallowing rack for identifying the IC card number. An infrared sensing module is provided above the IC card swallowing rack for detecting the insertion of an IC card.

[0022] In a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention, the IC card dispensing module consists of five guide wheels and two drive wheels, wherein four of the guide wheels are symmetrically arranged on the upper and lower sides of the IC card dispensing rack; one of the drive wheels is located at the upper middle part of the IC card dispensing rack; the other guide wheel and the other drive wheel are both located at the bottom of the cavity; an IC card NFC identification module is provided on the inner side of the IC card dispensing rack for identifying the IC card number.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This invention provides a multimedia classroom microphone and IC card rental and return device. This device can be installed near the entrance of each teaching building. No manual processing or information filling is required when renting microphones and IC cards. Users can choose to rent only the microphone or the IC card, or both. The device supports teachers using their campus cards for rentals and reminds teachers to return items if they are not returned for an extended period. Returning the item simply requires placing it in the rental locker, effectively improving the efficiency of rental and return statistics and reducing waiting time for teachers and verification time for front desk staff. Attached Figure Description

[0025] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the overall structure of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention;

[0027] Figure 2 A schematic diagram of the microphone pusher device of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention;

[0028] Figure 3 A cross-sectional view of the internal structure of the microphone pusher device of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention.

[0029] Figure 4 A side cross-sectional view of the overall structure of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention;

[0030] Figure 5 A system framework diagram of a multimedia classroom microphone and IC card borrowing and returning device and a microphone borrowing and returning device provided by the present invention;

[0031] Figure 6 A flowchart of the multimedia classroom microphone and IC card borrowing and returning device provided by the present invention;

[0032] Figure 7 A cross-sectional view of the internal structure of the IC card swallowing and dispensing module of the multimedia classroom microphone and IC card rental device provided by the present invention;

[0033] Figure 8 This is a schematic diagram of the IC card reset mechanism of the multimedia classroom microphone and IC card rental device provided by the present invention.

[0034] Figure 9The diagram shows the framework of the multimedia classroom microphone and IC card rental device and IC card rental system provided by the present invention.

[0035] The markings in the diagram are explained as follows:

[0036] 1. LED indicator light; 2. Face recognition module; 3. Display; 4. Microphone slot module; 5. NFC card swiping module; 6. Slide bar one; 7. Lead screw; 8. Slide bar two; 9. Microphone slot housing; 10. Movable baffle; 11. Microphone slot lower cover; 12. Synchronous motor one; 13. Push plate body; 14. Pressure sensor; 15. Microphone slot lifting platform; 16. Position sensor; 17. Wheel assembly; 18. Conveyor belt; 19. Camera scanning module; 20. IC card holder; 21. Fixing buckle; 22. Guide wheel; 23. IC card NFC recognition module; 24. Drive wheel; 25. Infrared sensing module; 26. IC card ejector; 27. Upper base; 28. Slide bar three; 29. ​​Lead screw; 30. Reset base; 31. Reset plate; 32. Servo motor; 33. Lower base; 34. Synchronous motor two. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0038] Example 1:

[0039] Please refer to Figure 1 - Figure 6 A multimedia classroom microphone and IC card borrowing and returning device, comprising:

[0040] The hardware components include the microphone and IC card self-service borrowing and returning machine housing. Multiple microphone slot modules 4, IC card swallowing modules, and card dispensing modules are evenly distributed on the front of the housing. Each microphone slot module 4 is horizontally angled at 30° and is fully tenon-groove connected to the housing. In case of a malfunction in a single microphone slot module 4, the entire machine does not need to be disassembled; only the individual module needs to be removed for repair, ensuring convenient maintenance. The IC card swallowing and dispensing modules are horizontally positioned, with a cavity at the rear for holding IC cards and a built-in IC card reset mechanism.

[0041] Each microphone slot module 4 is equipped with a microphone pusher plate device inside, which is used to push the microphone out of the microphone slot module 4 and to retract the microphone; a pressure sensor 14 is installed on the microphone pusher plate device to detect whether a microphone is inserted into the microphone slot module 4.

[0042] The microphone pusher device includes a microphone slot housing 9. The front end of the microphone slot housing 9 is provided with a pick-up and drop-off window. The front end of the microphone slot housing 9 and inside the pick-up and drop-off window is provided with a movable baffle 10 for dust prevention. The lower part of the end of the microphone slot housing 9 away from the movable baffle 10 is provided with a recessed cavity, and a slot lifting structure is provided in the recessed cavity. The upper end of the microphone slot housing 9 is provided with a camera scanning module 19, which is used to confirm the serial number of the returned microphone by scanning the QR code on the microphone when the microphone is returned.

[0043] The IC card swallowing module includes an IC card swallowing rack 20, which contains a guide wheel 22, a drive wheel 24, an IC card NFC recognition module 23, and an infrared sensing module 25.

[0044] The IC card dispensing module includes an IC card dispensing rack 26, which also contains a guide wheel 22, a drive wheel 24, and an IC card NFC recognition module 23.

[0045] The IC card reset mechanism includes a reset plate 31, a reset base 30, a slide bar 28, a lead screw 29, a synchronous motor 34, and a servo motor 32.

[0046] LED indicator lights 1 are embedded on the front of the microphone and IC card self-service borrowing and returning machine and above each microphone slot module 4; a face recognition module 2, a display 3, and an NFC card swiping module 5 are respectively installed on the front of the microphone and IC card self-service borrowing and returning machine and on one side.

[0047] Among them, the face recognition module 2 is used by teachers to perform face recognition identity authentication and upload the identity ID of the renter to the system.

[0048] Display 3 is used to show the current rental status, remaining available microphones and IC cards.

[0049] Among them, the NFC card swiping module 5 is used by teachers to authenticate their identity by swiping their campus cards or swiping their mobile phones via NFC, and to upload the identity ID of the person renting the card to the system.

[0050] Specifically, the lifting structure includes a microphone slot lifting platform 15, which is located inside the microphone slot housing 9 and in the position of the recessed cavity. The four corners of the microphone slot lifting platform 15 extend to the outside of the microphone slot housing 9. A microphone slot lower cover plate 11 is provided at the bottom of the microphone slot housing 9 and in the position of the recessed cavity. A slide rod 6 and a slide rod 8 are provided on the sides of the microphone slot housing 9. The two ends of the slide rod 6 and the slide rod 8 are fixedly connected to the microphone slot housing 9 and the microphone slot lower cover plate 11, respectively. The part of the microphone slot lifting platform 15 located outside the microphone slot housing 9 is vertically slidably connected to the corresponding slide rod 6. A lead screw 7 is also provided on the outside of the microphone slot housing 9 and in the position of the recessed cavity. The lead screw 7 is rotatably connected to the microphone slot housing 9. A synchronous motor 12 is installed below the lead screw 7. The synchronous motor 12 is fixedly connected to the microphone slot lower cover plate 11 through a bracket. The output end of the synchronous motor 12 is fixedly connected to the lead screw 7 to provide lifting power. An extension block is provided on the side of the microphone slot lifting platform 15. The extension block is positioned corresponding to the lead screw 7. The end of the extension block away from the microphone slot lifting platform 15 extends to the outside of the microphone slot housing 9. The extension block is threadedly connected to the lead screw 7. Thus, when the lead screw 7 rotates, the microphone slot lifting platform 15 can be driven to move synchronously through the extension block.

[0051] Specifically, a pusher plate body 13 is also provided inside the microphone slot housing 9. The pusher plate body 13 is slidably connected along the length of the microphone slot lifting platform 15. Wheel assemblies 17 are rotatably connected at the lower end of the microphone slot lifting platform 15. The two wheel assemblies 17 are connected by a conveyor belt 18. The wheel assemblies 17 are driven by a drive motor. The bottom of the pusher plate body 13 is fixedly connected to the conveyor belt 18. A pressure sensor 14 is set on the side of the pusher plate body 13 facing the movable baffle 10. Position sensors 16 are set at both ends of the inner side of the microphone slot lifting platform 15 to detect the movement position of the pusher plate body 13. The microphone pusher device controls the rotation of the conveyor belt 18 by the drive motor through the wheel assemblies 17, so that the pusher plate body 13 pushes out the microphone.

[0052] As can be seen, when the microphone is retracted, the microphone slot module 4 is placed at an angle of 30°. When the microphone is placed into the microphone slot module 4, due to the influence of gravity, the microphone will slide into the microphone slot module 4 and touch the pressure sensor 14 on the push plate. The processor receives the signal from the pressure sensor 14 and performs a retraction action on the push plate body 13, so that the microphone is completely retracted into the microphone slot module 4. Then the processor sends a signal to the synchronous motor 12 to control the microphone slot lifting platform 15 to perform a downward action.

[0053] Specifically, the IC card reset mechanism consists of two sliding rods 28, a lead screw 29, a synchronous motor 34, an upper base 27, a lower base 33, a servo motor 32, a reset plate 31, and a reset base 30. The upper and lower ends of the sliding rods 28 are fixedly connected to the upper base 27 and the lower base 33, respectively; the upper and lower ends of the lead screw 29 are rotatably connected to the upper base 27 and the lower base 33, respectively; the synchronous motor 34 is located above the lead screw 29; the synchronous motor 34 is fixedly connected to the upper base 27 via a bracket. The reset base 30 is slidably connected to two slide rods 28, and the reset base 30 is threadedly connected to the lead screw 29. A synchronous motor 34 is installed above the lead screw 29 to provide lifting power. The reset plate 31 is located on one side of the reset base 30 and is rotatably connected to the reset base 30 by a pin. The servo motor 32 is fixedly connected to the reset base 30. The output shaft of the servo motor 32 is fixedly connected to the reset plate 31. The servo motor 32 controls the rotation of the reset plate 31 to realize the conversion between vertical and horizontal positions.

[0054] Example 2:

[0055] The multimedia classroom microphone and IC card borrowing and returning device provided in Example 1 has been further optimized, specifically, as follows: Figure 7 As shown, the IC card swallowing module consists of four guide wheels 22 and one drive wheel 24. The guide wheels 22 are symmetrically arranged on the upper and lower sides of the IC card swallowing rack 20. The drive wheel 24 is located at the lower middle part of the IC card swallowing rack 20. An IC card NFC identification module 23 is provided inside the IC card swallowing rack 20 for identifying the IC card number. An infrared sensing module 25 is provided above the IC card swallowing rack 20 for detecting the insertion of IC cards.

[0056] The drive wheel 24 is fixed by a fixing buckle 21. The fixing buckle 21 is connected to the IC card holder 20 by a pin. The protruding end of the fixing buckle 21 presses against the shaft of the drive wheel 24 to fix it.

[0057] It can be seen that after the IC card is inserted into the IC card holder 20, the IC card is identified by the IC card NFC identification module 23. After successful identification, the IC card is moved towards the cavity at the rear of the module by the four guide wheels 22 to store the IC card.

[0058] Example 3:

[0059] The multimedia classroom microphone and IC card borrowing and returning device provided in Example 1 has been further optimized, specifically, as follows: Figure 7As shown, the IC card dispensing module consists of five guide wheels 22 and two drive wheels 24. Four guide wheels 22 are symmetrically arranged on the upper and lower sides of the IC card dispensing frame 26; one drive wheel 24 is located at the upper center of the IC card dispensing frame 26; the other guide wheel 22 and the other drive wheel 24 are both located at the bottom of the cavity. An IC card NFC identification module 23 is installed inside the IC card dispensing frame 26 to identify the IC card number. The drive wheel 24 is fixed by a retaining buckle 21, which is connected to the IC card dispensing frame 26 using a pin-like mechanism. One protruding end of the retaining buckle 21 abuts against the shaft of the drive wheel 24, serving a fixing function.

[0060] It can be seen that when it is necessary to send an IC card to the outside, the IC card is sent to the inside of the IC card ejector 26 by the guide wheel 22 and the drive wheel 24 at the bottom of the cavity. The IC card NFC recognition module 23 inside the IC card ejector 26 identifies and records the sent IC card. After the above steps are completed, the IC card is sent to the outside of the device by the four guide wheels 22 and the drive wheel 24 inside the IC card ejector 26.

[0061] Example 4:

[0062] The multimedia classroom microphone and IC card borrowing and returning device provided in Example 1 has been further optimized, specifically, as follows: Figures 1-6 As shown, it also includes a software component, which comprises a backend user login module, a network communication module, a processor, a backend database module, and a backend operating system. The backend user login module, network communication module, and backend database module are all electrically connected to the processor. Specifically, LED indicator 1, face recognition module 2, display 3, NFC card reader module 5, synchronous motor 12, pressure sensor 14, position sensor 16, wheel assembly 17, and camera scanning module 19 are all electrically connected to the processor.

[0063] Furthermore, the data stored in the backend database module includes at least the teacher's ID and microphone number. When a microphone is rented, the teacher's ID is written into the backend database to facilitate finding the microphone renter. When the microphone is returned, the teacher's ID is cleared from the microphone database.

[0064] The back-end staff login module is used by back-end staff to handle teacher rental permissions and abnormal events such as failure to rent or return normally.

[0065] The network communication module is used for information transmission between the mobile terminal and the terminal, and is used by the processor to access the background operation module through the network communication module;

[0066] The processor is used to operate the NFC card reader module 5, the microphone pusher, the display 3, and to communicate with the background operating system via the network.

[0067] The processor operates using a time-sharing multitasking scheduling method, switching tasks through microcontroller timer interrupts to achieve alternating operation between tasks, thus avoiding the use of RTOS systems that consume large amounts of CPU resources.

[0068] The backend operation module is used by teachers to determine their rental privileges, check for any outstanding microphones, select available microphones for delivery and return, bind and unbind microphone IDs from renters' identities, and send SMS return reminders. Specifically, when a microphone is rented, the backend module binds the microphone ID to the renter's identity ID. At the end of the rental period, if the microphone is not returned, it retrieves the bound identity ID using the microphone ID and sends an SMS reminder. After the renter returns the microphone, the ID is unbound.

[0069] The processor, in its main control of microphone rental and return, employs a time-sharing multitasking approach, allowing multiple teachers to return microphones simultaneously while one teacher rents them. This is achieved using STM32 timer interrupts, with fixed time slices allocated. Each task executes within its specified time, switching to the next task after the time slice expires. Due to the urgency of class time, the system prioritizes microphone rental, assigning it the highest priority with a 10ms time slice. Microphone return is the next highest priority, corresponding to the motor drive task during microphone retrieval, with a 30ms time slice. Camera scanning is the lowest priority, with a 50ms time slice. By rapidly switching between these three tasks, the system can handle all three tasks simultaneously.

[0070] The processor controls the release of microphones from the rental system, identifies the renter's identity, identifies the microphone's serial number, and performs network communication with the backend operating system.

[0071] The main control tasks of the rental device, such as processor, microphone launch, microphone number recognition, renter identification, and communication with the backend operating system, are carried out in a time-sliced, multi-tasking manner, so that multiple teachers can return microphones at the same time when they rent them.

[0072] The back-end operating system sends text messages to users who haven't returned their microphones each night during the cleanup process, reminding them to do so.

[0073] Its working principle:

[0074] After a card is swiped via NFC or a mobile phone NFC swipe, or after facial recognition via facial recognition module 2, the NFC card reader module 5 uploads the read identity ID to the backend operation module via the network communication module. The backend operation module reads the identity ID, indexes it in the teacher information database, and verifies the identity ID's permissions. If the identity ID meets the rental permission requirements, the backend operating system first indexes the microphone information database to check if the current identity ID has any outstanding rented items.

[0075] If any rented items have not been returned, the backend operating system sends a signal to monitor 3, indicating that there are currently unreturned items and that the items should be returned before renting again.

[0076] If no rented items are found to be unreturned, the backend operating system indexes the microphone information database to locate an available microphone, binds the microphone's ID to the current renter's identity ID, and sets the microphone's status to "in use." The microphone's ID is then sent to the borrowing / returning device via the network communication module.

[0077] After receiving the microphone number, the rental device processor sends a signal to the corresponding microphone slot module 4. Upon receiving the signal, the microphone slot module 4 controls the synchronous motor 12 to raise and lower the microphone. The synchronous motor 12 drives the lead screw 7 to rotate, causing the microphone slot lifting platform 15, connected to the lead screw 7, to move upwards. Once the microphone slot lifting platform 15 reaches its top, it sends a signal to the drive motor of the drive wheel assembly 17. The drive motor rotates the wheel assembly 17, and the conveyor belt 18 pushes the push plate body 13, pushing the microphone into the recessed cavity. When the push plate body 13 touches the position sensor 16, the drive motor stops rotating. The LED indicator 1 on the corresponding microphone slot module 4 illuminates.

[0078] When returning the microphone, it is placed into the microphone slot module 4. Due to gravity, the microphone automatically slides into the microphone slot module 4. The pressure sensor 14 on the push plate body 13 detects the touch and sends a signal to the processor. The processor sends a signal to the corresponding drive motor, which retracts the push plate body 13 until it touches the lower position sensor 16 and stops. Then, a signal is sent to the synchronous motor 12, which starts working and drives the microphone slot lifting platform 15 to descend.

[0079] The camera scanning module 19, located above the microphone, performs scanning, identifies the microphone number, and transmits the number to the backend operating system via network communication.

[0080] The operating system receives the microphone number, indexes it in the microphone information database, sets the microphone status to idle, unbinds the renter's identity ID, and then sends a success signal to the borrowing and returning device, displaying "Return successful" on the monitor.

Claims

1. A multimedia classroom microphone and IC card borrowing and returning device, characterized in that, include: The hardware component includes a microphone and IC card self-service borrowing and returning machine housing. The front of the microphone and IC card self-service borrowing and returning machine housing is evenly provided with multiple microphone slot modules (4) and IC card swallowing and dispensing modules. Each microphone slot module (4) is set at a horizontal angle of 30°. Each microphone slot module (4) is fully tenon-groove connected to the microphone and IC card self-service borrowing and returning machine housing. The IC card swallowing and dispensing modules are placed horizontally, and there is a cavity at the rear of the module for placing IC cards. The cavity contains an IC card reset mechanism. Each microphone slot module (4) is equipped with a microphone pusher device for pushing the microphone out of the microphone slot module (4) and retrieving the microphone; the microphone pusher device is equipped with a pressure sensor (14) for detecting whether a microphone is inserted into the microphone slot module (4). The microphone pusher device includes a microphone slot housing (9), a pick-up and drop window is provided at the front end of the microphone slot housing (9), a movable baffle (10) is provided at the front end of the microphone slot housing (9) and inside the pick-up and drop window, a recessed cavity is provided at the lower part of the end of the microphone slot housing (9) away from the movable baffle (10), and a slot lifting structure is provided in the recessed cavity; a camera scanning module (19) is provided at the upper end of the microphone slot housing (9), which is used to confirm the number of the returned microphone by scanning the QR code on the microphone when the microphone is returned; The IC card swallowing module includes an IC card swallowing rack (20), and the IC card swallowing rack (20) is provided with a guide wheel (22), a drive wheel (24), an IC card NFC recognition module (23) and an infrared sensing module (25). The IC card dispensing module includes an IC card dispensing rack (26), and the IC card dispensing rack (26) is also equipped with a guide wheel (22), a drive wheel (24), and an IC card NFC recognition module (23). The IC card reset mechanism includes a reset plate (31), a reset base (30), a slide bar three (28), a lead screw (29), a synchronous motor two (34), and a servo motor (32); LED indicator lights (1) are embedded on the front of the microphone and IC card self-service borrowing and returning machine body and above each microphone slot module (4); a face recognition module (2), a display (3), and an NFC card swiping module (5) are respectively provided on the front of the microphone and IC card self-service borrowing and returning machine body and on one side.

2. The multimedia classroom microphone and IC card borrowing and returning device according to claim 1, characterized in that, The lifting structure includes a microphone slot lifting platform (15), which is located inside the microphone slot housing (9) and in the position of the recessed cavity. The four corners of the microphone slot lifting platform (15) extend to the outside of the microphone slot housing (9). A microphone slot lower cover plate (11) is provided at the bottom of the microphone slot housing (9) and in the position of the recessed cavity. A slide rod one (6) and a slide rod two (8) are provided on the sides of the microphone slot housing (9). The two ends of the slide rod one (6) and the slide rod two (8) are fixedly connected to the microphone slot housing (9) and the microphone slot lower cover plate (11) respectively. The part of the microphone slot lifting platform (15) located outside the microphone slot housing (9) is corresponding to the position of the microphone slot lifting platform (15). The slide bar (6) at the position is vertically slidably connected. A lead screw (7) is also provided on the outside of the microphone slot housing (9) and at the position of the recessed cavity. The lead screw (7) is rotatably connected to the microphone slot housing (9). A synchronous motor (12) is provided below the lead screw (7). The synchronous motor (12) is fixedly connected to the microphone slot lower cover plate (11) through a bracket. The output end of the synchronous motor (12) is fixedly connected to the lead screw (7). An extension block is provided on the side of the microphone slot lifting platform (15). The position of the extension block corresponds to that of the lead screw (7). The end of the extension block away from the microphone slot lifting platform (15) extends to the outside of the microphone slot housing (9). The extension block is threadedly connected to the lead screw (7).

3. The multimedia classroom microphone and IC card borrowing and returning device according to claim 2, characterized in that, The microphone slot housing (9) is also provided with a push plate body (13). The push plate body (13) is slidably connected along the length of the microphone slot lifting platform (15). A wheel assembly (17) is rotatably connected at the lower end of the microphone slot lifting platform (15). The two wheel assemblies (17) are connected by a transmission belt (18). The bottom of the push plate body (13) is fixedly connected to the transmission belt (18). The pressure sensor (14) is set on the side of the push plate body (13) facing the movable baffle (10). Position sensors (16) are set at both ends of the inner side of the microphone slot lifting platform (15) to detect the movement position of the push plate body (13).

4. The multimedia classroom microphone and IC card borrowing and returning device according to claim 1, characterized in that, It also includes a software component, which includes a backend user login module, a network communication module, a processor, a backend database module, and a backend operating system; the backend user login module, network communication module, and backend database module are all electrically connected to the processor.

5. The multimedia classroom microphone and IC card borrowing and returning device according to claim 4, characterized in that, The LED indicator (1), face recognition module (2), display (3), NFC card swiping module (5), synchronous motor (12), pressure sensor (14), position sensor (16), wheel assembly (17), and camera scanning module (19) are all electrically connected to the processor.

6. The multimedia classroom microphone and IC card borrowing and returning device according to claim 4, characterized in that, The data stored inside the backend database module includes at least the teacher's identity ID, microphone number, and IC card number. When a microphone is rented, the teacher's identity ID is written into the backend database to facilitate finding the person who rented the microphone and IC card. When the microphone is returned, the identity ID in the microphone and IC card database is cleared.

7. The multimedia classroom microphone and IC card borrowing and returning device according to claim 1, characterized in that, The IC card reset mechanism consists of two sliding rods (28), a lead screw (29), a synchronous motor (34), an upper base (27), a lower base (33), a servo motor (32), a reset plate (31), and a reset base (30). The upper and lower ends of the sliding rods (28) are fixedly connected to the upper base (27) and the lower base (33) respectively; the upper and lower ends of the lead screw (29) are rotatably connected to the upper base (27) and the lower base (33) respectively; and a synchronous motor (34) is installed above the lead screw (29). The synchronous motor 2 (34) is fixedly connected to the upper base (27) via a bracket; the reset base (30) is slidably connected to the two slide rods 3 (28), and the reset base (30) is threadedly connected to the lead screw (29); the reset plate (31) is located on one side of the reset base (30), and the reset plate (31) and the reset base (30) are rotatably connected via a pin; the servo motor (32) is fixedly connected to the reset base (30) in a corresponding manner, and the output shaft of the servo motor (32) is fixedly connected to the reset plate (31).

8. The multimedia classroom microphone and IC card borrowing and returning device according to claim 1, characterized in that, The IC card swallowing module consists of four guide wheels (22) and one drive wheel (24). The guide wheels (22) are symmetrically arranged on the upper and lower sides of the IC card swallowing rack (20). The drive wheel (24) is located at the lower middle part of the IC card swallowing rack (20). An IC card NFC identification module (23) is provided inside the IC card swallowing rack (20) for identifying the IC card number. An infrared sensing module (25) is provided above the IC card swallowing rack (20) for detecting the insertion of the IC card.

9. The multimedia classroom microphone and IC card borrowing and returning device according to claim 1, characterized in that, The IC card dispensing module consists of five guide wheels (22) and two drive wheels (24). Four of the guide wheels (22) are symmetrically arranged on the upper and lower sides of the IC card dispensing frame (26). One of the drive wheels (24) is located at the middle of the upper side of the IC card dispensing frame (26). The other guide wheel (22) and the other drive wheel (24) are both located at the bottom of the cavity. An IC card NFC identification module (23) is provided on the inner side of the IC card dispensing frame (26) for identifying the IC card number.

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