Digital audio control system

Abstract

The utility model discloses a digital audio control system, which comprises a plurality of control devices and a plurality of earphone devices, the control device comprises a first Bluetooth module and a key module, and the earphone device comprises a second Bluetooth module and a microphone module; the earphone device communicates with the control device through the first Bluetooth module and the second Bluetooth module; the control devices are electrically connected with the audio devices, and each audio device is connected with one control device; the first button of the button module is pressed down to realize communication with the earphone device, the first Bluetooth module sends a communication protocol to the corresponding earphone device to realize communication, and the earphone device which is not matched with the first button cannot perform Bluetooth communication with the control device. The voice amplification device is simple in structure, and can utilize the control device and the earphone device to cooperate with the existing audio equipment to carry out high-restoration-degree voice amplification on the voice of a teacher so as to reduce the burden of the throat of the teacher.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of education digital conference control amplification, specifically relates to a digital audio control system. BACKGROUND

[0002] Now the amplification mode of teacher's teaching and meeting: one is the small bee loudspeaker, the small bee loudspeaker is not good in tone quality, exists the pronunciation distortion, and even sometimes will produce the howling, also is very easy to be affected by other radio wave's electromagnetic interference, in addition because the small sound is hung in the teacher's waist, the propagation distance of sound is limited, the sound is too big to the near, the sound is not clear to the far, especially the small sound height of the primary school teacher is directly opposite the ear of the student who sits on the seat, the harm to the student ear is very big, the student and the parent also have very big opinion to this, some local education departments even issue the document to prohibit the use of small bee loudspeaker.

[0003] Another is the mode of using the microphone to connect the sound, the microphone includes the hand-held microphone, the neck clip microphone and so on, these products have played a great role in reducing the fatigue of the teacher's voice, but there are some deficiencies, for example, the hand-held microphone needs to be held by one hand all the time, with the shaking of the hand, the volume will change, sometimes the teaching time is too long, the hand will also be tired, if the teacher needs to use both hands (such as experiment, mapping, etc.), if one hand holds the microphone, it will affect the operation of the two hands, the primary and middle school teachers need to write a lot on the blackboard, the shaking range of the hand will be larger, the space of the primary and middle school classroom is limited, the probability of howling is also very high, the neck clip microphone has the disadvantage that it is difficult to fix on the clothes when the clothes are thin, and it is easy to turn over, it is far from the mouth, and it is not in front of the mouth, the sound clarity is not ideal, and the endurance time is short.

[0004] Another mode is to use the teacher and student interactive control system or electronic classroom system, this device needs computer, central controller and a large number of mobile terminal devices of students, can only be used in some courses, such as experiment course, art course, etc. have no effect; since each student has a mobile terminal device, the management and control of the teacher to the mobile terminal device is also a great challenge, especially the primary school students with weak self-control ability; when using these systems, the teacher still needs to explain, these systems also do not have a unique way to solve the problem of teacher's voice fatigue, generally only with a microphone; the reality is that these systems have been launched for several years, but schools in developed areas rarely use such devices, the disadvantages are obvious. Therefore, it is very important to obtain a digital audio control system and method which overcome the above-mentioned defects. UTILITY MODEL CONTENT

[0005] In order to solve at least one of the above technical problems, the utility model provides a digital audio control system: including a plurality of control devices and a plurality of earphone devices;

[0006] The control device comprises a first Bluetooth module and a key module, the earphone device comprises a second Bluetooth module and a microphone module; the earphone device communicates with the control device through the first Bluetooth module and the second Bluetooth module; the key module controls the first Bluetooth module to send a corresponding communication signal to the matched earphone device.

[0007] The microphone module is fixedly connected to the earphone device through a memory connecting rod, and the microphone module is electrically connected to the earphone device.

[0008] According to the technical scheme, the memory connecting rod can be bent to make the microphone module close to the mouth of a user, and the distance can be adjusted according to needs; since the microphone is very close to the mouth, the self-excitation phenomenon of the sound amplifying device is better inhibited, and the occurrence of howling in the limited space of a classroom is better prevented.

[0009] Or the howling is weakened or eliminated through an existing algorithm.

[0010] The control device is electrically connected to an audio device, receives the sound collected by the microphone module of the earphone device, and outputs the sound through a loudspeaker of the audio device.

[0011] The control device further comprises a first audio power amplifier module and a display screen module.

[0012] The earphone device further comprises a second audio power amplifier module, a second power supply port and a charging protection module.

[0013] The control device comprises a shell, the shell is internally provided with a mounting cavity, a mounting hole is formed in the mounting cavity, the mounting hole is smaller than the cross section of the mounting cavity, and an elastic clamping arm matched with the mounting hole is fixed in the mounting cavity. A limiting block is fixed in the shell, and a spacing is formed between the limiting block and the elastic clamping arm. A circuit board is fixed in the shell, the first Bluetooth module, the key module, the first audio power amplifier module, the first power supply port and the voltage stabilizing module are mounted on the circuit board, and the shell is provided with a hollow part for exposing the display screen and the key module.

[0014] According to the technical scheme, the shell is convenient to install and fix, an insert is installed on a wall, the insert is inserted into the mounting hole, and the elastic clamping arm abuts against the insert, so that stable insertion is realized.

[0015] The key module comprises subject keys, switch keys, collection keys, volume keys, matching keys and disconnecting keys; the earphone device can be matched through the matching keys when being configured with the control device for the first time, and can be disconnected through the disconnecting keys when being disconnected.

[0016] In use, the following steps are included:

[0017] The control device and the earphone device are arranged in each room, and the control device is electrically connected with the audio equipment;

[0018] The switch key of the key module in the control device is pressed to make the control device in a starting state;

[0019] The matching key of the key module is pressed in the starting state of the control device, so that the communication protocol between the first Bluetooth module of the control device and the second Bluetooth module of the earphone device in each room is matched with each other;

[0020] When the subject key of the key module is pressed, the first Bluetooth module of the control device and the second Bluetooth module of the earphone device in the room are connected through mutual wireless communication, and the first Bluetooth module of the control device shields the earphone device in other rooms; and the code of the matched earphone device is displayed in the control device;

[0021] When the microphone module of the earphone device receives audio, the earphone device transmits the audio signal to the audio equipment through the first audio power amplifier module of the control device and plays sound.

[0022] The encryption method adopts a wireless communication protocol encoding mode.

[0023] The earphone device can also be connected with the teacher's own mobile phone while being connected with the control device.

[0024] Compared with the prior art, the control device and the earphone device are matched with the existing audio equipment to restore the teacher's voice with high fidelity, so as to reduce the burden on the teacher's voice.

[0025] The earphone device of the utility model adopts bone conduction earphone, and the earphone is worn on two ears and is fixed in position, which not only releases both ears, but also can completely release both hands during teaching, and is convenient for the teacher to operate with both hands (such as doing experiments).

[0026] Due to the breakthrough of our earphone in low power consumption, the earphone lecture endurance time is more than twelve hours, effectively solve the earphone use endurance problem, audio-visual education device is directly connected to the power supply.

[0027] For example in the university, students have a lot of Bluetooth connection equipment such as mobile terminal, some students will also try to match with audio-visual education device through Bluetooth, so as to disrupt the original matching order of the equipment. The utility model has address locking ability, the audio-visual education device, namely the control device of the utility model, can only match with the special bone conduction earphone, directional encryption is adopted, the security of communication can be guaranteed by the action of directional encryption, and the malicious entry of other equipment is prevented. To complete directional encryption, the audio-visual education device and the bone conduction earphone need to be pre-installed with software when manufacturing.

[0028] The control device of the utility model can adjust the volume, can be adjusted according to different use occasions, so that teachers with different voices can get the best effect in the amplification of the classroom, and the low power consumption effect is also achieved. The earphone device lecture endurance time is more than twelve hours, effectively solve the earphone use endurance problem, the control device can be directly connected to the power supply. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the control device of the utility model perspective view;

[0030] Figure 2 It is the control device of the utility model perspective view sectional view;

[0031] Figure 3 It is the system structure diagram of the utility model;

[0032] Figure 4 It is the circuit distribution diagram in the control device Figure 1 ;

[0033] Figure 5 It is the circuit distribution diagram in the control device Figure 2 ;

[0034] Figure 6 It is the first Bluetooth module circuit diagram of the control device;

[0035] Figure 7 Control device key module, first power supply port and voltage stabilizing module circuit diagram;

[0036] Figure 8 Control device display screen module circuit diagram;

[0037] Figure 9 First audio power amplifier module circuit diagram;

[0038] Figure 10 Is the earphone device interface block diagram;

[0039] Reference signs:

[0040] 1 shell;101 installation cavity;102 mounting hole;103 elastic clamping arm;104 limit block;105 circuit board;106 mounting ear;107 spacing;

[0041] 2 control device;201 display screen;202 key module;

[0042] 3 earphone device;301 microphone module;302 memory connecting rod. DETAILED DESCRIPTION

[0043] In order for those skilled in the art to better understand the present application, so that the scope of the present application is more clearly limited, the present application will be described in detail below. It should be noted that the following is only some specific embodiments of the present application concept and is only a part of the embodiments of the present application, and the specific and direct description of the related structure is only for the convenience of understanding the present application, and each specific feature does not of course, directly limit the scope of the present application.

[0044] Referring to the drawings, the present application adopts the following technical solutions, on the one hand, the present application provides a digital audio control system: comprising a plurality of control devices 2 and a plurality of earphone devices 3;

[0045] The control device 2 comprises a first Bluetooth module and a key module, the earphone device 3 comprises a second Bluetooth module and a microphone module 301;The earphone device 3 is communicated with the control device 2 through the first Bluetooth module and the second Bluetooth module;The key module controls the first Bluetooth module to send the corresponding communication signal to the matching earphone device 3.

[0046] The microphone module 301 is fixedly connected with the earphone device 3 through the memory connecting rod 302, and the microphone module 301 is electrically connected with the earphone device 3.

[0047] Through the above technical solution, the present application can bend the memory connecting rod 302 to make the microphone module 301 close to the user's mouth, and can be adjusted according to the need, since the microphone is very close to the mouth, the self-excitation phenomenon of the sound amplifying device is better suppressed, and the occurrence of howling in the limited space of primary and secondary school classrooms is well prevented.

[0048] The control device 2 is electrically connected with an audio device, and the control device 2 receives sound collected by a microphone module 301 of the earphone device 3 and outputs the sound through a loudspeaker of the audio device.

[0049] The control device 2 further comprises a first audio power amplifier module and a display screen 201 module.

[0050] The earphone device 3 further comprises a second audio power amplifier module, a second power supply port and a charging protection module, and a microphone interface.

[0051] The control device 2 comprises a shell 1, the shell 1 is internally provided with a mounting cavity 101, a mounting hole 102 is formed in the mounting cavity 101, the mounting hole 102 is smaller than a cross section of the mounting cavity 101, and an elastic clamping arm 103 matched with the mounting hole 102 is fixed in the mounting cavity 101. The shell 1 is internally provided with a limiting block 104, a spacing 107 is formed between the limiting block 104 and the elastic clamping arm 103, and a circuit board 105 is fixed in the shell 1.

[0052] By the above technical scheme, the control device 2 can be conveniently installed and fixed, one plug-in part can be installed on a wall body, the plug-in part is inserted into the mounting hole 102, and the elastic clamping arm 103 abuts against the plug-in part, so that stable plug-in connection is achieved.

[0053] The key module 202 comprises a plurality of subject keys, switch keys, collection keys, volume keys, matching keys and disconnection keys; the earphone device 3 can be matched through the matching keys when being configured with the control device 2 for the first time, and the communication can be disconnected through the disconnection keys when being disconnected. The earphone device 3 is a bone conduction earphone, and the key module 202 further comprises a backup key.

[0054] The shell 1 is further provided with a mounting lug 106, and a through hole is formed in the mounting lug 106.

[0055] The earphone device comprises a processor with Bluetooth audio and programmability, a TYPE-C charging + microphone interface, a memory, a second audio power amplifier module, two earphones and a charging protection chip.

[0056] The control device 2 is electrically connected with an audio device, and the control device 2 receives sound collected by a microphone module 301 of the earphone device 3 and outputs the sound through a loudspeaker of the audio device.

[0057] The control device 2 is electrically connected with an audio device, and the control device 2 receives sound collected by a microphone module 301 of the earphone device 3 and outputs the sound through a loudspeaker of the audio device.

[0058] Press the switch key of the key module 202 in the control device to make the control device 2 in the power-on state;

[0059] Press the matching key of the key module 202 in the power-on state of the control device 2 to make the communication protocol between the first Bluetooth module of the control device 2 in each room and the second Bluetooth module of the earphone device 3 matched with each other;

[0060] When the subject key of the key module 202 is pressed, the first Bluetooth module of the control device 2 in the room is connected to the second Bluetooth module of the earphone device 3 in wireless communication, and the first Bluetooth module of the control device 2 is shielded from the earphone device in other rooms; and the code of the matched earphone device 3 is displayed in the control device 2. For example, the earphone device numbered 1 is matched, and the number 1 is displayed on the display screen 201.

[0061] When the microphone module 301 of the earphone device 3 receives audio, the earphone device 3 transmits the audio signal to the audio equipment through the first audio power amplifier module of the control device 2 and plays the sound.

[0062] The encryption method described above adopts a wireless communication protocol encoding mode.

[0063] When in use, for example, there are multiple multimedia classrooms, numbered A, B, C, D, E, etc., each multimedia classroom is equipped with an audio device, numbered A1, B1, C1, D1, E1, etc., such as a computer with a sound system, the control device 2 of the utility model is installed on the wall or beside the podium through the mounting hole 102, and each classroom is equipped with a control device.

[0064] When matching:

[0065] One of the control devices can match multiple earphone devices, and one earphone device can also match multiple control devices; before use, pairing is required.

[0066] The pairing method is as follows: first step: press the matching key of the control device, and the display screen of the control device will display "matching";

[0067] Second step: press the power-on key of the earphone device for more than 5 seconds in the power-off state of the earphone device, and the earphone device will play a prompt sound "Bluetooth matching";

[0068] Third step: after about 3 seconds of matching, the earphone will play a prompt sound "connected", and a number will be displayed in the middle of the display screen (there is also a number on the new earphone tag, and the number of each earphone is fixed),

[0069] The displayed number is the number of the panel button to be pressed when the control device is connected to the earphone device next time (for example, if the displayed number is "1", the button of "language 1" on the panel is pressed), and the connection is completed by pressing the button with the same number on any matched control device.

[0070] The matching method is the same when the control device in another classroom is matched, and the number displayed on the control device for the same earphone is the same.

[0071] The connection method of the earphone device: after the matching is completed, when the teacher needs to use the sound amplification equipment in class;

[0072] Step 1: After the earphone device is turned on and the memory connecting rod earphone is plugged in, the corresponding number button on the control device is pressed when matching, and a prompt sound "connected" will be heard on the earphone device after about 3 seconds, and the sound amplification can be performed;

[0073] Step 2: After use, press the "disconnect" button on the control device, and the teacher will hear the earphone prompt sound "disconnected"; or after the earphone is turned off, the display screen will display "disconnected".

[0074] When the teacher uses the sound amplification equipment in class, the bone conduction earphone must be plugged into the memory connecting rod earphone, and the microphone module is directed towards the mouth to achieve the best sound amplification effect. The sound volume can only be adjusted by pressing the up and down buttons on the control device (the volume button on the earphone cannot be adjusted after the connecting rod earphone is used).

[0075] Among them, the control device of the utility model is powered by an external power supply, and can be in a powered-on state for a long time.

[0076] The first Bluetooth module can adopt BTM525 chip. The second Bluetooth module can adopt QCC3034_VFBGA_90BALL.

[0077] The earphone device 3 can also be connected to the teacher's own mobile phone while being connected to the control device 2. The bone conduction earphone can also be connected to the teacher's own mobile phone via Bluetooth while being connected to the control device, and can answer the phone and enjoy music. At this time, the microphone module does not need to be connected through the memory connecting rod.

[0078] It is worth mentioning that if a phone call comes in while the teacher's own mobile phone is connected, there will be a ring or prompt sound on the earphone. Pressing the call button on the earphone will answer the call, and the connection between the earphone device and the control device will be disconnected. If this function is not needed, the Bluetooth function of the mobile phone can be turned off.

[0079] Compared with the prior art, the utility model has the advantages that: the utility model simple structure, the teacher every day lecture time is too long, the speech volume is high, the harm of two to the vocal cords is bigger, many teachers still have pharyngitis, even some people suffer from occupational disease because of this, the utility model can utilize control device 2 and earphone device 3 cooperate the high restorability of the existing audio equipment to the teacher voice and amplify, to reduce the burden of the teacher vocal cords.

[0080] The earphone device 3 of the utility model adopts bone conduction earphone, and the earphone is worn on both ears, and the position is fixed, which not only releases both ears, but also can completely release both hands during the lecture, and is convenient for the teacher to operate and experiment with both hands.

[0081] Due to the breakthrough of the earphone in low power consumption, the earphone lecture endurance time is more than twelve hours, and the endurance problem of the earphone use is effectively solved.

[0082] For example, in a university, students have a large number of Bluetooth connection devices such as mobile terminals, and some students will also try to match the audio-visual education device with Bluetooth, which will disturb the original matching order of the device.

[0083] The bone conduction earphone can be selected as a glasses type bone conduction earphone, which has the advantages of fashion and beauty, although it has the disadvantages of short endurance time and poor amplification effect.

[0084] The control device 2 of the utility model can adjust the volume, and can be adjusted according to different use occasions, so that teachers with different voices can get the best effect of amplification in the classroom, and also has the effect of low power consumption.

[0085] In the above use scenario, the room is a classroom, and can be applied to various primary schools, junior high schools, high schools, universities and night schools.

[0086] In addition, the utility model can also be used in other scenes, for example, the scene of holding a meeting, or the scene of a public class in a school, or the scene of a language competition, such as a debate competition; in such scenes, the control device is installed in the conference room, each person who needs to speak can wear the earphone device, the control device is connected with the audio equipment in the room, the control device can be controlled by the host or the backstage scene control, the speaker can speak while sitting, standing or walking, and the sound amplification effect is not affected, and the matching mode of the plurality of earphone devices and the control device is consistent with the matching mode in the classroom scene.

[0087] Thus far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A digital audio control system, characterized by: The application relates to a control device (2) and earphone devices (3). The control device (2) comprises a first Bluetooth module and a key module (202), the earphone device (3) comprises a second Bluetooth module and a microphone module (301), the earphone device (3) communicates with the control device (2) through the first Bluetooth module and the second Bluetooth module, the key module controls the first Bluetooth module to send a corresponding communication signal to the matched earphone device (3), and the control device (2) is electrically connected with an audio equipment, the control device (2) receives sound collected by the microphone module (301) of the earphone device (3) and outputs the sound through a loudspeaker of the audio equipment.

2. The digital audio control system of claim 1, wherein: The control device (2) further comprises a first audio power amplifier module and a display screen (201) module.

3. The digital audio control system of claim 2, wherein: The control device (2) further comprises a first power supply port and a voltage stabilizing module.

4. The digital audio control system of claim 1, wherein: The earphone device (3) further comprises a second audio power amplifier module, a second power supply port and a charging protection module.

5. The digital audio control system of claim 1, wherein: The control device (2) comprises a shell (1), the shell (1) is internally provided with a mounting cavity (101), a mounting hole (102) is formed in the mounting cavity (101), the mounting hole (102) is smaller than the cross section of the mounting cavity (101), the mounting cavity (101) is fixedly provided with an elastic clamping arm (103) matched with the mounting hole (102), and a limiting block (104) is fixedly arranged in the shell (1).

6. The digital audio control system of claim 5, wherein: The shell (1) is fixedly provided with a circuit board (105), the first Bluetooth module, the key module (202), the first audio power amplifier module, the first power supply port and the voltage stabilizing module are arranged on the circuit board (105), and the shell (1) is provided with a hollow part for exposing the display screen (201) and the key module (202).

7. The digital audio control system of claim 1, wherein: The microphone module (301) is fixedly connected with the earphone device (3) through a memory connecting rod (302), and the microphone module (301) is electrically connected with the earphone device (3).

8. The digital audio control system of claim 1, wherein: The key module (202) comprises a plurality of subject keys, switch keys, collection keys, volume keys, matching keys and disconnection keys; the earphone device (3) can be matched through the matching keys when being configured with the control device (2) for the first time, and the communication can be disconnected through the disconnection keys when being disconnected.

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