Multimedia classroom microphone and IC card borrowing and returning device and system

Abstract

The invention discloses a multimedia classroom microphone and IC card borrowing and returning device and system, and the device comprises a hardware part which comprises a microphone and IC card self-service borrowing and returning machine body housing, the front surface of the microphone and IC card self-service borrowing and returning machine body housing is uniformly provided with a plurality of microphone slot modules, and each microphone slot module is arranged in a horizontal inclination manner. According to the multimedia classroom microphone and IC card borrowing and returning device and system, the borrowing and returning system can be arranged on the wall adjacent to the entrance of each teaching building, manual processing and information filling are not needed during microphone and IC card borrowing and returning, and only the microphone or the IC card can be selected to be borrowed, or the microphone and the IC card can be selected to be borrowed together. The system supports the teacher to use the teacher campus card for renting, and the teacher can be reminded to return articles if the articles are not returned for a long time after renting. And the articles can be returned only by placing the articles in the renting cabinet, so that the renting and returning statistical efficiency is effectively improved, and the queuing time of teachers and the checking time of foreground staff are shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of offline self-service borrowing and returning management platforms, and particularly relates to a multimedia classroom microphone and IC card borrowing and returning device and system. Background Art

[0002] At present, most domestic universities use multimedia classrooms, which are equipped with teaching-specific audio systems, desktop computers and monitors, and projectors. To prevent the disorderly use of multimedia classrooms and avoid the loss and theft of microphones in the classrooms, the microphones are placed at the manual borrowing and returning management office in the teaching building. Teachers need to go here to rent or return them during class hours.

[0003] Since there are many teaching classes in universities, during the peak hours of class and after class, when teachers rent at the front desk of the management office and fill in their personal teaching class information, the efficiency is too low. There is often a phenomenon that teachers queue up at the borrowing and returning management office, which delays the teachers' time, causes inconvenience to the teachers, and at the same time increases the school's labor costs in this regard and increases the time for management staff to search and check for microphones and IC cards that have not been returned in time. For this reason, this application proposes a multimedia classroom microphone and IC card borrowing and returning device and system, and provides a new technical solution to solve the above-mentioned technical problems. Summary of the Invention

[0004] Based on this, in view of the above technical problems, it is necessary to provide a multimedia classroom microphone and IC card borrowing and returning device and system. This borrowing and returning system can be installed adjacent to the wall at the entrance of each teaching building. When borrowing and returning microphones and IC cards, no manual processing and information filling are required, and it is possible to choose to rent only a microphone or an IC card, or rent a microphone and an IC card together. The system supports teachers to rent using their campus cards. If the items are not returned for a long time after renting, it can remind the teacher to return the items. When returning, only need to place the items in the rental cabinet to complete the return, effectively improving the efficiency of rental and return statistics, and reducing the waiting time for teachers in line and the checking time for front desk staff.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A multimedia classroom microphone and IC card borrowing and returning device and system, which is applied to the borrowing and returning of multimedia classroom microphones.

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

[0008] For the hardware part, the hardware part includes a microphone and the body shell of the IC card self-service borrowing and returning device. A plurality of microphone slot modules, an IC card swallowing module and an IC card spitting module are evenly arranged on the front of the microphone and the body shell of the IC card self-service borrowing and returning device. Each of the microphone slot modules is set at a horizontal slope of °. Each of the microphone slot modules is joined to the microphone and the body shell of the IC card self-service borrowing and returning device by a full-groove mortise joint. The IC card swallowing module and the IC card spitting module are horizontally placed, and there is a cavity at the tail of the module for placing the IC card, and an IC card reset mechanism is arranged in the cavity.

[0009] Inside each of the microphone slot modules, a microphone push plate device is arranged for pushing the microphone out of the microphone slot module and recycling the microphone. A pressure sensor is arranged on the microphone push plate device for detecting whether a microphone is inserted into the microphone slot module.

[0010] The microphone push plate device includes a microphone slot housing. A pick-up and placement window is arranged at the front end of the microphone slot housing. An activity baffle is arranged at the front end of the microphone slot housing and inside the pick-up and placement window. A sunken cavity is arranged at the lower part of one end of the microphone slot housing away from the activity baffle, and a slot lifting structure is arranged in the sunken cavity. A camera scanning code module is arranged at the upper end of the microphone slot housing for confirming the number of the returned microphone by scanning the two-dimensional code on the microphone when the microphone is returned.

[0011] The IC card swallowing module includes an IC card swallowing rack, and a guide wheel, a driving wheel, an IC card NFC identification module and an infrared induction module are arranged in the IC card swallowing rack.

[0012] The IC card spitting module includes an IC card spitting rack, and a guide wheel, a driving wheel and an IC card NFC identification module are also arranged in the IC card spitting rack.

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

[0014] LED indicators are embedded at the front of the microphone and the body shell of the IC card self-service borrowing and returning device and above each of the microphone slot modules. A face recognition module, a display and an NFC card swiping module are respectively arranged at the front of the microphone and the body shell of the IC card self-service borrowing and returning device and at one side.

[0015] As a preferred embodiment of the microphone and IC card borrowing and returning device and system for a multimedia classroom provided by the present invention, the lifting structure includes a microphone slot lifting platform, which is arranged inside the microphone slot housing and located at the position of the sunken cavity. Four end corners of the microphone slot lifting platform extend to the outside of the microphone slot housing. A microphone slot lower cover plate is arranged at the bottom of the microphone slot housing and at the position of the sunken cavity. Slide bars one and two are arranged on the sides of the microphone slot housing. Two ends of the slide bars one and two are respectively fixedly connected to the microphone slot housing and the microphone slot lower cover plate. The parts of the microphone slot lifting platform located outside the microphone slot housing are all vertically slidably connected to the corresponding slide bars one. A lead screw is further arranged outside the microphone slot housing and at the position of the sunken cavity. The lead screw is rotatably connected to the microphone slot housing. A synchronous motor one is arranged below the lead screw. The synchronous motor one is fixedly connected to the microphone slot lower cover plate through a bracket. The output end of the synchronous motor one is fixedly connected to the lead screw. An extension block is arranged on the side of the microphone slot lifting platform, corresponding to the position of the lead screw. One end of the extension block far away from the microphone slot lifting platform extends to the outside of the microphone slot housing, and the extension block is threadedly connected to the lead screw.

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

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

[0018] As a preferred embodiment of the microphone and IC card borrowing and returning device and system for a multimedia classroom provided by the present invention, the LED indicator light, the face recognition module, the display, the NFC card swiping module, the synchronous motor one, the pressure sensor, the position sensor, the wheel assembly, and the 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 and system provided by the present invention, the data stored in the background database module at least includes the teacher identity ID, microphone number, and IC card number. When borrowing a microphone, the teacher identity ID is written into the background database to facilitate finding the borrower of the microphone and IC card. When returning, the identity ID in the microphone and IC card databases is cleared.

[0020] As a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device and system provided by the present invention, the IC card reset mechanism is composed of two sliding rods III, a lead screw, a synchronous motor II, an upper base, a lower base, a servo motor, a reset plate, and a reset base. The upper and lower ends of the sliding rod III are respectively fixedly connected to the upper base and the lower base; the upper and lower ends of the lead screw are respectively rotatably connected to the upper base and the lower base; a synchronous motor II is arranged above the lead screw; the synchronous motor II is fixedly connected to the upper base through a bracket; the reset base is slidably connected to the two sliding rods III, and the reset base is threadedly connected to the lead screw; the reset plate is located at a position on one side of the reset base, the reset plate is rotatably connected to the reset base through a pin, the servo motor is fixedly connected corresponding to the reset base, and the output shaft of the servo motor is fixedly connected to the reset plate.

[0021] As a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device and system provided by the present invention, the IC card swallowing module is composed of four guide wheels and a driving wheel. The guide wheels are symmetrically arranged on the upper and lower sides of the IC card swallowing frame; the driving wheel is arranged at the middle position on the lower side of the IC card swallowing frame; an IC card NFC identification module is arranged inside the IC card swallowing frame for identifying the IC card number; an infrared induction module is arranged above the IC card swallowing frame for detecting the insertion of the IC card.

[0022] As a preferred embodiment of the multimedia classroom microphone and IC card borrowing and returning device and system provided by the present invention, the IC card ejecting module is composed of five guide wheels and two driving wheels. Four of the guide wheels are symmetrically arranged on the upper and lower sides of the IC card ejecting frame; one of the driving wheels is arranged at the middle position on the upper side of the IC card ejecting frame; the other guide wheel and the other driving wheel are both arranged at the bottom of the cavity; an IC card NFC identification module is arranged inside the IC card ejecting frame for identifying the IC card number.

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

[0024] The multimedia classroom microphone and IC card borrowing and returning device and system provided by the present invention. The borrowing and returning system can be installed at the adjacent wall of the entrance of each teaching building. When borrowing and returning microphones and IC cards, no manual processing and information filling are required, and it is possible to choose to borrow only a microphone or an IC card, or both a microphone and an IC card together. The system supports teachers to use their campus cards for borrowing. If the items are not returned for a long time after borrowing, the teacher can be reminded to return the items. When returning, only need to place the items in the borrowing cabinet to complete the return, which effectively improves the efficiency of borrowing and returning statistics and reduces the waiting time of teachers in line and the checking time of front desk staff. Brief Description of the Drawings

[0025] In order to more clearly illustrate the solutions in the present invention, the following will give a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

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

[0027] Figure 2 It is a schematic diagram of the structure of the microphone push plate device of the multimedia classroom microphone and IC card borrowing and returning device and system provided by the present invention;

[0028] Figure 3 It is a cross-sectional view of the internal structure of the microphone push plate device of the multimedia classroom microphone and IC card borrowing and returning device and system provided by the present invention;

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

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

[0031] Figure 6 It is a program flow chart of the multimedia classroom microphone and IC card borrowing and returning device and system provided by the present invention;

[0032] Figure 7 It is a cross-sectional view of the internal structure of the IC card swallowing and spitting module of the multimedia classroom microphone and IC card borrowing and renting device and system provided by the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the IC card reset mechanism of the multimedia classroom microphone and IC card borrowing and renting device and system provided by the present invention.

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

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

[0036] 1. LED indicator; 2. Face recognition module; 3. Display; 4. Microphone slot module; 5. NFC card swiping module; 6. Slide bar 1; 7. Lead screw; 8. Slide bar 2; 9. Microphone slot housing; 10. Movable baffle; 11. Lower cover of microphone slot; 12. Synchronous motor 1; 13. Main body of push plate; 14. Pressure sensor; 15. Microphone slot lifting platform; 16. Position sensor; 17. Wheel assembly; 18. Conveyor belt; 19. Camera code scanning module; 20. IC card swallowing rack; 21. Fixed buckle; 22. Guide wheel; 23. IC card NFC recognition module; 24. Driving wheel; 25. Infrared induction module; 26. IC card spitting rack; 27. Upper end base; 28. Slide bar 3; 29. Lead screw; 30. Reset base; 31. Reset plate; 32. Steering gear; 33. Lower end base; 34. Synchronous motor 2. Specific implementation mode

[0037] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment 1:

[0039] Please refer to Figure 1 - Figure 6 , a multimedia classroom microphone and IC card borrowing and returning device and system, which includes:

[0040] The hardware part, the hardware part includes the body shell of the microphone and IC card self-service borrowing and returning. A plurality of microphone slot modules 4 and IC card swallowing and spitting modules are evenly arranged on the front of the body shell of the microphone and IC card self-service borrowing and returning. Each microphone slot module 4 is set at a horizontal slope of 30°. Each microphone slot module 4 is joined with the body shell of the microphone and IC card self-service borrowing and returning by a full-groove tenon joint; when a single microphone slot module 4 fails, there is no need to dismantle the whole machine, and only the single microphone slot module 4 needs to be pulled out for repair to achieve convenient maintenance; the IC card swallowing and spitting modules are horizontally placed, and there is a cavity at the tail of the module for placing the IC card, and an IC card reset mechanism is arranged in the cavity.

[0041] Inside each microphone slot module 4, there is a microphone push plate device for pushing the microphone out of the microphone slot module 4 and retrieving the microphone; a pressure sensor 14 is provided on the microphone push plate device to detect whether a microphone is inserted into the microphone slot module 4;

[0042] The microphone push plate device includes a microphone slot housing 9. At the front end of the microphone slot housing 9, there is a pick-up and placement window. Inside the front end of the microphone slot housing 9 and located inside the pick-up and placement window, there is a movable baffle 10 for dust prevention. At the lower part of one end of the microphone slot housing 9 away from the movable baffle 10, there is a sunken cavity, and a slot lifting structure is provided inside the sunken cavity; at the upper end of the microphone slot housing 9, there is a camera code scanning module 19 for confirming the 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, and inside the IC card swallowing rack 20, there are guide wheels 22, a driving wheel 24, an IC card NFC identification module 23, and an infrared induction module 25;

[0044] The IC card ejecting module includes an IC card ejecting rack 26, and inside the IC card ejecting rack 26, there are also guide wheels 22, a driving wheel 24, and an IC card NFC identification module 23;

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

[0046] On the front of the body shell of the microphone and IC card self-service borrowing and returning device, and at the position above each microphone slot module 4, there is an embedded LED indicator 1; on the front of the body shell of the microphone and IC card self-service borrowing and returning device, and at the position on one side, there are a face recognition module 2, a display 3, and an NFC card swiping module 5 respectively.

[0047] Among them, the face recognition module 2 is used for the teacher to perform face recognition for identity authentication and upload the identity ID of the borrowing person to the system.

[0048] Among them, the display 3 is used to display the current borrowing status, the remaining available microphones and IC cards.

[0049] Among them, the NFC card swiping module 5 is used for the teacher to perform campus card swiping identity authentication or mobile phone NFC card swiping and upload the identity ID of the borrowing person to the system.

[0050] Specifically, the lifting structure includes a microphone slot lifting platform 15. The microphone slot lifting platform 15 is arranged inside the microphone slot housing 9 and is located at the position of the sunken cavity. Four end corners of the microphone slot lifting platform 15 extend to the outside of the microphone slot housing 9. At the bottom of the microphone slot housing 9 and at the position of the sunken cavity, a microphone slot lower cover plate 11 is provided. Slide rods 6 and 8 are arranged on the sides of the microphone slot housing 9. Two ends of the slide rods 6 and 8 are respectively fixedly connected to the microphone slot housing 9 and the microphone slot lower cover plate 11. The parts of the microphone slot lifting platform 15 located outside the microphone slot housing 9 are vertically slidably connected to the corresponding slide rods 6. A lead screw 7 is further arranged outside the microphone slot housing 9 and at the position of the sunken cavity. The lead screw 7 is rotatably connected to the microphone slot housing 9. A synchronous motor 12 is arranged 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 the lifting power. An extension block is arranged on the side of the microphone slot lifting platform 15. The extension block corresponds to the position of the lead screw 7. One 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 push plate main body 13 is further arranged inside the microphone slot housing 9. The push plate main body 13 is slidably connected along the length direction of the microphone slot lifting platform 15. Wheel assemblies 17 are rotatably connected at the lower end positions of the microphone slot lifting platform 15. The two wheel assemblies 17 are driven by a conveyor belt 18. The wheel assemblies 17 are driven by a driving motor. The bottom of the push plate main body 13 is fixedly connected to the conveyor belt 18. A pressure sensor 14 is arranged on the side of the push plate main body 13 facing the movable baffle 10. Position sensors 16 are arranged at both inner ends of the microphone slot lifting platform 15 to detect the movement position of the push plate main body 13. The microphone push plate device controls the rotation of the conveyor belt 18 by driving the wheel assemblies 17 through a driving motor, so as to realize the action of the push plate main body 13 pushing out the microphone.

[0052] It can be known that when the microphone is recycled, the microphone slot module 4 is placed at an inclination 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 transmitted by the pressure sensor 14 and retracts the push plate main body 13, so as to realize the complete recycling of the microphone into the microphone slot module 4. Subsequently, the processor sends a signal to the synchronous motor 12 to control the microphone slot lifting platform 15 to perform a descending action.

[0053] Specifically, the IC card reset mechanism consists of two slide bars 3 28, a lead screw 29, a synchronous motor 2 34, an upper base 27, a lower base 33, a steering gear 32, a reset plate 31, and a reset base 30. The upper and lower ends of the slide bar 3 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; a synchronous motor 2 34 is provided above the lead screw 29; the synchronous motor 2 34 is fixedly connected to the upper base 27 through a bracket The reset base 30 is slidably connected to the two slide bars 28, and the reset base 30 is threadedly connected to the lead screw 29. A synchronous motor 34 is provided above the lead screw 29 to provide lifting power; the reset plate 31 is located at a position on one side of the reset base 30, and the reset plate 31 is rotatably connected to the reset base 30 by a latch, and the servo 32 is fixedly connected to the reset base 30 accordingly, and the output shaft of the servo 32 is fixedly connected to the reset plate 31. The servo 32 controls the rotation of the reset plate 31 to achieve conversion between vertical and horizontal positions.

[0054] Example 2:

[0055] The multimedia classroom microphone and IC card borrowing and returning device and system provided in Example 1 are further optimized. Specifically, Figure 7 As shown, the IC card swallowing module consists of four guide wheels 22 and a driving wheel 24. The guide wheels 22 are symmetrically arranged on the upper and lower sides of the IC card swallowing rack 20; the driving wheel 24 is arranged at the middle part of the lower side of the IC card swallowing rack 20; an IC card NFC identification module 23 is arranged on the inside of the IC card swallowing rack 20 for identifying the IC card number; an infrared sensing module 25 is arranged above the IC card swallowing rack 20 for detecting the insertion of the IC card.

[0056] The driving wheel 24 is fixed by a fixing buckle 21, and the fixing buckle 21 is connected to the IC card holder 20 in a latching manner. One protruding end of the fixing buckle 21 presses against the rotating shaft of the driving wheel 24 to fix it.

[0057] It can be seen that after the IC card is inserted into the IC card holder 20, it is identified when it passes through the IC card NFC identification module 23. After successful identification, the IC card is driven by the four guide wheels 22 to move toward the cavity at the tail of the module to store the IC card.

[0058] Embodiment 3:

[0059] The multimedia classroom microphone and IC card borrowing and returning device and system provided in Example 1 are further optimized. Specifically, Figure 7As shown in the figure, the IC card ejection module consists of five guide wheels 22 and two driving wheels 24. Four of the guide wheels 22 are symmetrically arranged on the upper and lower sides of the IC card ejection rack 26. One of the driving wheels 24 is arranged at the middle position on the upper side of the IC card ejection rack 26. The other guide wheel 22 and the other driving wheel 24 are both arranged at the bottom of the cavity. An IC card NFC recognition module 23 is arranged inside the IC card ejection rack 26 for recognizing the IC card number. Among them, the driving wheel 24 is fixed by a fixing buckle 21. The fixing buckle 21 is connected to the IC card ejection rack 26 in a pin insertion manner. One end of the protruding fixing buckle 21 abuts against the rotating shaft of the driving wheel 24 to play a fixing role.

[0060] It can be seen that when it is necessary to convey the IC card to the outside, the guide wheel 22 and the driving wheel 24 at the bottom of the cavity convey the IC card towards the inside of the IC card ejection rack 26. The IC card NFC recognition module 23 inside the IC card ejection rack 26 recognizes and records the conveyed IC card. After completing the above steps, the four guide wheels 22 and the driving wheel 24 inside the IC card ejection rack 26 convey the IC card to the outside of the device.

[0061] Embodiment 4:

[0062] The multimedia classroom microphone, IC card borrowing and returning device and system provided in Embodiment 1 are further optimized. Specifically, as Figures 1-6 shown, it further includes a software part. The software part includes a background personnel login module, a network communication module, a processor, a background database module, and a background operating system. The background personnel login module, the network communication module, and the background database module are all electrically connected to the processor. Among them, the LED indicator 1, the face recognition module 2, the display 3, the NFC card swiping module 5, the first synchronous motor 12, the pressure sensor 14, the position sensor 16, the wheel assembly 17, and the camera scanning module 19 are all electrically connected to the processor.

[0063] Furthermore, the data stored in the background database module at least includes the teacher identity ID and the microphone number. When the microphone is rented, the teacher identity ID is written into the background database to facilitate finding the microphone renter, and the identity ID in the microphone database is cleared when it is returned.

[0064] The background personnel login module is used for background personnel to handle the teacher's rental permission and abnormal events such as failure to rent or return normally, etc.;

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

[0066] The processor is used to operate the NFC card swiping module 5, the microphone push plate device, the display 3 and conduct network communication with the background operating system;

[0067] The processor operates in a time-sharing multitasking scheduling manner, switches tasks through the single-chip microcomputer timer interrupt, realizes the alternating operation between tasks, and avoids occupying a large amount of CPU resources by using the RTOS system.

[0068] The background operation module is used for the teacher to perform rental operations. It determines whether the teacher has the rental permission, whether there is an unreturned situation, selects an idle microphone to push out and return the microphone, binds and unbinds the microphone number with the renter's identity ID, and sends text message return reminders, etc. It can be seen that when the microphone is rented, the background operation module will bind the microphone number with the renter's identity ID. At the settlement time, when it detects that the microphone is in an unreturned state, it finds the bound identity ID through the microphone number and sends a reminder via text message. After the renter returns the microphone, the ID is unbound.

[0069] The processor uses a time-slice time-sharing multitasking method for the borrowing and returning body main control task, so that when the teacher rents a microphone, multiple teachers can return the microphones simultaneously. It can be seen that by using the timer interrupt of STM32, a fixed time slice is set, and each task is executed within the specified time. When the time slice is exhausted, it switches to the next task. Since the class time is relatively urgent, the system gives priority to the microphone rental behavior, sets the microphone rental task as the most priority task, and allocates a time slice of 10 ms. The microphone return behavior is set as the second priority, that is, the motor drive task when the microphone is recycled, and the time slice is allocated 30 ms. The camera barcode scanning task is set as the lowest level, and the time slice is allocated 50 ms. Since the processing system quickly switches among the three tasks, it can realize the processing of the three tasks simultaneously.

[0070] Among them, the processor controls the pushing out of the microphone of the rental system, identifies the renter's identity, identifies the microphone number, and conducts network communication with the background operating system.

[0071] Among them, for the borrowing and returning body main control tasks such as microphone pushing out, microphone number identification, renter identity identification, and communication with the background operating system, the processor uses a time-slice time-sharing multitasking method, so that when the teacher rents a microphone, multiple teachers can return the microphones simultaneously.

[0072] Among them, the background operating system will send a text message reminder to the renter who has not returned the microphone to return it every night during the settlement.

[0073] Its working principle:

[0074] After the NFC card - swiping module 5 swipes a card or uses mobile phone NFC card - swiping, or after face recognition by the face recognition module 2, the read identity ID is uploaded to the background operation module through the network communication module. After the background operation module reads the identity ID, it indexes in the teacher information database to verify the permissions of the identity ID. When the identity ID meets the borrowing permission, the background operating system first indexes the microphone information database to detect whether there are any borrowed items not yet returned for the current identity ID.

[0075] If there are borrowed items not yet returned, the background operating system sends a signal to the display 3 to show that there are items not yet returned, and please return them first before borrowing.

[0076] If there are no borrowed items not yet returned, the background operating system indexes the microphone information database to find an idle microphone, binds the microphone number to the current borrower's identity ID, and sets the microphone status to in - use. Through the network communication module, the microphone number is sent to the borrowing and returning device.

[0077] After the borrowing device processor receives the microphone number, it sends a signal to the corresponding microphone slot module 4. After the microphone slot module 4 receives the signal, it controls the synchronous motor one 12 to perform the microphone lifting action. The synchronous motor one 12 works to drive the lead screw 7 to rotate, and the microphone slot lifting platform 15 connected to the lead screw 7 moves upward, driving the microphone slot lifting platform 15 to rise. After the microphone slot lifting platform 15 reaches the 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 main body 13 to push the microphone out into the sunken cavity. When the push - plate main body 13 touches the position sensor 16, the drive motor stops rotating. The LED indicator 1 on the corresponding microphone slot module 4 lights up.

[0078] When returning the microphone, the microphone 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 main body 13 detects the touch and sends a signal to the processor. The processor sends a signal to the corresponding drive motor to retract the push - plate main body 13, and stops when touching the lower position sensor 16. Then it sends a signal to the synchronous motor one 12, and the synchronous motor one 12 starts to work, driving the microphone slot lifting platform 15 to perform a descending action.

[0079] The camera scanning module 19 above the microphone performs scanning work, identifies the microphone number, and transmits the number to the background operating system through network communication.

[0080] The operating system receives the microphone number, indexes in the microphone information database, sets the status of the microphone to idle, unbinds the borrower's identity ID, and then sends a signal of successful operation to the borrowing and returning device, and shows successful return on the display 3.

Claims

1. A multimedia classroom microphone and IC card borrowing and returning device and system, characterized in that Including: The hardware part, the hardware part includes a microphone and the body shell of the IC card self-service borrowing and returning machine. A plurality of microphone slot modules (4), an IC card swallowing module and an IC card ejecting module are evenly arranged on the front of the microphone and the body shell of the IC card self-service borrowing and returning machine. Each of the microphone slot modules (4) is arranged at a horizontal slope of 30°. Each of the microphone slot modules (4) is joined to the microphone and the body shell of the IC card self-service borrowing and returning machine by full-groove mortise joint; The IC card swallowing module and the IC card ejecting module are horizontally placed, and there is a cavity at the tail of the module for placing the IC card, and an IC card reset mechanism is arranged in the cavity; A microphone push plate device is arranged inside each of the microphone slot modules (4) for pushing the microphone out of the microphone slot module (4) and recycling the microphone; A pressure sensor (14) is arranged on the microphone push plate device for detecting whether a microphone is inserted into the microphone slot module (4); The microphone push plate device includes a microphone slot housing (9). A pick-up window is arranged at the front end of the microphone slot housing (9). An activity baffle (10) is arranged at the front end of the microphone slot housing (9) and inside the pick-up window. A sunken cavity is arranged at the lower part of the end of the microphone slot housing (9) far away from the activity baffle (10), and a slot lifting structure is arranged in the sunken cavity; A camera code scanning module (19) is arranged at the upper end of the microphone slot housing (9) for confirming the number of the returned microphone by scanning the two-dimensional code on the microphone when the microphone is returned; The IC card swallowing module includes an IC card swallowing rack (20), and a guide wheel (22), a driving wheel (24), an IC card NFC identification module (23) and an infrared induction module (25) are arranged in the IC card swallowing rack (20); The IC card ejecting module includes an IC card ejecting rack (26), and a guide wheel (22), a driving wheel (24), an IC card NFC identification module (23) are also arranged in the IC card ejecting rack (26); The IC card reset mechanism includes a reset plate (31), a reset base (30), a third slide bar (28), a lead screw (29), a second synchronous motor (34), and a steering gear (32); LED indicators (1) are embedded at the upper positions of each of the microphone slot modules (4) on the front of the microphone and the body shell of the IC card self-service borrowing and returning machine; A face recognition module (2), a display (3), and an NFC card swiping module (5) are respectively arranged at one side positions on the front of the microphone and the body shell of the IC card self-service borrowing and returning machine.

2. The multimedia classroom microphone and IC card borrowing and returning device and system according to claim 1, characterized in that, The lifting structure includes a microphone slot lifting platform (15). The microphone slot lifting platform (15) is arranged inside the microphone slot housing (9) and is located at the position of the sunken cavity. Four end corners of the microphone slot lifting platform (15) extend to the outside of the microphone slot housing (9). At the bottom of the microphone slot housing (9) and at the position of the sunken cavity, a microphone slot lower cover plate (11) is provided. Slide rods one (6) and two (8) are arranged on the sides of the microphone slot housing (9). The two ends of the slide rods one (6) and two (8) are fixedly connected to the microphone slot housing (9) and the microphone slot lower cover plate (11) respectively. The parts of the microphone slot lifting platform (15) located outside the microphone slot housing (9) are vertically slidably connected to the corresponding slide rods one (6). A lead screw (7) is further arranged outside the microphone slot housing (9) and at the position of the sunken cavity. The lead screw (7) is rotatably connected to the microphone slot housing (9). A synchronous motor one (12) is arranged below the lead screw (7). The synchronous motor one (12) is fixedly connected to the microphone slot lower cover plate (11) through a bracket. The output end of the synchronous motor one (12) is fixedly connected to the lead screw (7). An extension block is arranged on the side of the microphone slot lifting platform (15). The extension block corresponds to the position of the lead screw (7). One end of the extension block far 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 and system according to claim 2, characterized in that, A push plate main body (13) is further arranged inside the microphone slot housing (9). The push plate main body (13) is slidably connected along the length direction of the microphone slot lifting platform (15). Wheel assemblies (17) are rotatably connected at the lower end parts of the microphone slot lifting platform (15). The two wheel assemblies (17) are drivingly connected through a conveyor belt (18). The bottom of the push plate main body (13) is fixedly connected to the conveyor belt (18). A pressure sensor (14) is arranged on the side of the push plate main body (13) facing the movable baffle (10). Position sensors (16) are arranged at both inner ends of the microphone slot lifting platform (15) for detecting the movement position of the push plate main body (13).

4. The multimedia classroom microphone and IC card borrowing and returning device and system according to claim 1, characterized in that, It further includes a software part. The software part includes a background personnel login module, a network communication module, a processor, a background database module, and a background operating system. The background personnel login module, the network communication module, and the background database module are all electrically connected to the processor.

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

6. The multimedia classroom microphone and IC card borrowing and returning device and system according to claim 4, characterized in that, The data stored inside the background database module includes at least the teacher identity ID, microphone number, and IC card number. When the microphone is rented, the teacher identity ID is written into the background database to facilitate finding the renter of the microphone and the IC card. When it is returned, the identity ID in the microphone and IC card databases is cleared.

7. The multimedia classroom microphone and IC card borrowing and returning device and system according to claim 1, characterized in that, The IC card reset mechanism consists of two slide bars three (28), a lead screw (29), a synchronous motor two (34), an upper base (27), a lower base (33), a steering gear (32), a reset plate (31), and a reset base (30). The upper and lower ends of the slide bar three (28) are respectively fixedly connected to the upper base (27) and the lower base (33); the upper and lower ends of the lead screw (29) are respectively rotatably connected to the upper base (27) and the lower base (33); the synchronous motor two (34) is arranged above the lead screw (29); the synchronous motor two (34) is fixedly connected to the upper base (27) through a bracket; the reset base (30) is slidably connected to the two slide bars three (28), and the reset base (30) is threadedly connected to the lead screw (29); the reset plate (31) is located at a position on one side of the reset base (30), the reset plate (31) is rotatably connected to the reset base (30) through a pin, the steering gear (32) is fixedly connected corresponding to the reset base (30), and the output shaft of the steering gear (32) is fixedly connected to the reset plate (31).

8. The multimedia classroom microphone and IC card borrowing and returning device and system according to claim 1, characterized in that, The IC card swallowing module consists of four guide wheels (22) and a driving wheel (24). The guide wheels (22) are symmetrically arranged on the upper and lower sides of the IC card swallowing rack (20); the driving wheel (24) is arranged at the middle position on the lower side of the IC card swallowing rack (20); an IC card NFC recognition module (23) is arranged inside the IC card swallowing rack (20) for recognizing the IC card number; an infrared induction module (25) is arranged 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 and system according to claim 1, characterized in that, The IC card ejecting module consists of five guide wheels (22) and two driving wheels (24). Four of the guide wheels (22) are symmetrically arranged on the upper and lower sides of the IC card ejecting rack (26); one of the driving wheels (24) is arranged at the middle position on the upper side of the IC card ejecting rack (26); the other guide wheel (22) and the other driving wheel (24) are both arranged at the bottom of the cavity; an IC card NFC recognition module (23) is arranged inside the IC card ejecting rack (26) for recognizing the IC card number.

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