Wireless sound amplification system and wireless sound amplification method for full-range infrared radiation frequency matching

Abstract

The present invention discloses a wireless sound amplification system and a wireless sound amplification method for global infrared radiation frequency matching. In the system, a global infrared radiation frequency management ball is arranged in an independent space to cover and radiate infrared signals of a unique frequency point. At least one wireless speaker is distributed in the independent space. The global infrared radiation frequency management ball is used for frequency matching in advance to achieve operation under the channel corresponding to the unique frequency point. After the wireless microphone enters the independent space, it receives the information of the unique frequency point and works on the channel corresponding to the unique frequency point. The wireless microphone sends the received voice signal to the wireless speaker through the channel corresponding to the unique frequency point, and the wireless speaker performs sound amplification and playback. Through the technical solution of the present invention, non-interference between the spaces is achieved, and the wireless microphone can automatically switch the frequency point when entering different independent spaces. The wireless speaker does not require complicated wiring, and the sound amplification effect is good, which greatly reduces the cost and improves the user experience.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a wireless sound reinforcement system with full-range infrared radiation frequency matching and a wireless sound reinforcement method with full-range infrared radiation frequency matching. Background Art

[0002] Traditional wireless microphones usually use radio waves to communicate, and their wireless signals can pass through walls. Therefore, when multiple sets of wireless microphones and receiving hosts are used together, they need to be used at different frequencies. For example, in a school classroom, if wireless microphones and receiving hosts are to be used simultaneously to give lectures, each classroom needs to use different frequencies to transmit their own sounds to avoid crosstalk.

[0003] Therefore, before using a traditional wireless microphone, you need to bring it close to the infrared transmitter in the receiving host (usually there is only one transmitter) to synchronize the frequency, and then you can officially start using it. It is locked one-to-one. When you change the receiving host, you need to re-synchronize and lock the frequency. For school teaching, either each classroom will have a fixed microphone with the corresponding frequency point "one-to-one" when installing classroom equipment; or the teacher will have to carry out tedious frequency synchronization work before giving a lecture with his own microphone (one teacher, one microphone).

[0004] In addition, in terms of installation, traditional teaching wireless sound reinforcement systems generally require long speaker cables to be laid between the receiving host and the speaker, which not only affects the sound quality, but also makes the wiring cumbersome, the manual installation and material costs are high, and it is not beautiful. Summary of the invention

[0005] In view of the above problems, the present invention provides a wireless sound amplification system with global infrared radiation frequency matching, which radiates unique frequency point information different from other independent spaces in an independent space through a global infrared radiation frequency management ball, and pre-matches with the wireless speakers in the independent space. After the wireless microphone enters the independent space, the frequency matching is completed according to the received unique frequency point information, so that the voice signal received by the wireless microphone can be transmitted to the wireless speaker for sound amplification through the channel corresponding to the unique frequency point, thereby achieving non-interference between the independent spaces, and automatically switching the frequency when the wireless microphone enters different independent spaces, thus solving the problem of frequent manual frequency matching and frequency crosstalk. The wireless speaker does not require complicated wiring, and has good sound amplification effect, which greatly reduces the cost and improves the user experience.

[0006] To achieve the above-mentioned object, the present invention provides a wireless sound reinforcement system with full-range infrared radiation frequency matching, comprising: a full-range infrared radiation frequency management ball, a wireless speaker and a wireless microphone;

[0007] The global infrared radiation frequency management ball is arranged in an independent space, and at least one wireless speaker is distributed in the independent space;

[0008] The global infrared radiation frequency management ball radiates infrared signals of a unique frequency point in a covering manner in the independent space, and the wireless speaker is pre-matched to the unique frequency point by the global infrared radiation frequency management ball, so as to work at the channel corresponding to the unique frequency point;

[0009] After the wireless microphone enters the independent space, it receives information about the unique frequency point and sets the wireless microphone to work on a channel corresponding to the unique frequency point;

[0010] The wireless microphone sends the received voice signal to the wireless speaker via the channel corresponding to the unique frequency point, and the wireless speaker amplifies and plays the voice signal.

[0011] In the above technical solution, preferably, the wireless sound reinforcement system for global infrared radiation frequency matching further includes:

[0012] After the wireless microphone leaves the first independent space, the infrared signal of the unique frequency radiated in the first independent space does not exist in the space, the wireless microphone is disconnected from the communication with the wireless speaker in the first independent space, and the received voice signal cannot be sent to the wireless speaker in the first independent space;

[0013] After entering the second independent space, the information of the unique frequency point of the corresponding independent space radiated by the global infrared radiation frequency management ball in the second independent space is received, and the wireless microphone is set to work in the channel corresponding to the unique frequency point in the second independent space, and the received voice signal is sent to the wireless speaker in the second independent space.

[0014] In the above technical solution, preferably, the global infrared radiation frequency management ball includes a ball processor, a ball frequency matching button, a display screen, a frequency setting button, a ball U-segment wireless transmission module, a QPSK modulation module, an infrared transmission drive circuit and an infrared transmission tube;

[0015] The ball frequency matching button, the display screen, the frequency point setting button, the ball U segment wireless transmission module and the QPSK modulation module are respectively connected to the ball processor, the infrared transmission drive circuit is connected to the QPSK modulation module, and the infrared transmission drive circuit is connected to the infrared transmission tube;

[0016] The display screen displays the current frequency information of the global infrared radiation frequency management ball, and the ball processor adjusts the current frequency information according to the trigger signal of the frequency setting button;

[0017] When the ball frequency matching button is triggered, the ball processor sends the frequency point information to the wireless speaker through the ball U-segment wireless transmission module for the wireless speaker to perform frequency matching;

[0018] The ball processor sends the frequency point information to the QPSK modulation module for signal modulation, and drives the infrared transmitting tube to transmit the modulated signal through the infrared transmitting driving circuit, thereby realizing the coverage radiation of the infrared signal in the independent space.

[0019] In the above technical solution, preferably, the wireless speaker includes a speaker processor, a speaker frequency matching button, a U-band wireless receiving module, an audio filter module, an audio power amplifier module and a speaker;

[0020] The speaker frequency-binding button and the U-segment wireless receiving module are respectively connected to the speaker processor, and when the speaker frequency-binding button is triggered, the speaker processor controls the U-segment wireless receiving module to receive the frequency point information sent by the ball U-segment wireless transmitting module, so as to work on the channel corresponding to the frequency point information;

[0021] The U-band wireless receiving module receives the voice signal sent by the wireless microphone in the channel corresponding to the frequency information, filters the voice signal through the audio filtering module, and drives the speaker to play the filtered voice signal through the audio power amplifier module.

[0022] In the above technical solution, preferably, the wireless microphone includes a microphone processor, an infrared receiving tube, a QPSK demodulation module, a microphone U-segment wireless transmission module and a microphone front-end amplification module;

[0023] After the infrared receiving tube receives the infrared signal sent by the infrared transmitting tube, the QPSK demodulation module performs signal demodulation, and the microphone processor sets the frequency of the microphone U-segment wireless transmitting module to the only frequency corresponding to the frequency information according to the frequency information obtained by signal demodulation;

[0024] The microphone front-end amplification module picks up and amplifies the voice signal, and sends the voice signal to the wireless speaker at the channel corresponding to the unique frequency point through the microphone U-segment wireless transmission module.

[0025] In the above technical solution, preferably, the wireless microphone further includes a volume adjustment button, and when the volume adjustment button is triggered, the playback volume of the voice signal is adjusted through a volume adjustment circuit.

[0026] In the above technical solution, preferably, the wireless microphone also includes a laser pen, and the laser pen includes a laser tube and a laser key. When the laser key is triggered, the laser tube is controlled to emit light, and the laser tube is turned off when the laser key is triggered.

[0027] The present invention further proposes a wireless sound reinforcement method for full-range infrared radiation frequency matching, which is applied to a wireless sound reinforcement system for full-range infrared radiation frequency matching disclosed in any one of the above technical solutions, comprising:

[0028] A unique frequency point is set for the global infrared radiation frequency management ball in the independent space, and an infrared signal of the unique frequency point is radiated in the independent space in a covering manner;

[0029] The wireless speakers in the independent space are matched to the unique frequency point by the global infrared radiation frequency management ball;

[0030] After entering the independent space, the wireless microphone receives the infrared signal of the global infrared radiation frequency management ball and operates at the unique frequency point corresponding to the infrared signal;

[0031] The wireless microphone sends the voice signal to the wireless speaker through the channel corresponding to the unique frequency point, and the voice signal is amplified and played through the wireless speaker.

[0032] In the above technical solution, preferably, the wireless sound amplification method of global infrared radiation frequency matching further includes:

[0033] After the wireless microphone leaves the first independent space, the communication with the wireless speaker in the first independent space is disconnected;

[0034] After entering the second independent space, the information of the unique frequency point of the corresponding independent space radiated by the global infrared radiation frequency management ball in the second independent space is received, and the wireless microphone is set to work in the channel corresponding to the unique frequency point in the second independent space, and the received voice signal is sent to the wireless speaker in the second independent space.

[0035] In the above technical solution, preferably, the wireless sound amplification method of global infrared radiation frequency matching specifically includes:

[0036] The global infrared radiation frequency management ball radiates an infrared signal of a unique frequency point through an infrared transmitting tube in the independent space according to the set unique frequency point;

[0037] When the ball frequency matching button of the global infrared radiation frequency management ball is triggered, the ball processor sends the frequency point information to the wireless speaker through the ball U-segment wireless transmission module;

[0038] The U-band wireless receiving module of the wireless speaker receives the frequency point information, performs frequency matching with the global infrared radiation frequency management ball, and works under the channel corresponding to the frequency point information;

[0039] When the wireless microphone receives the infrared signal after entering the independent space, the frequency of the U-band wireless transmission module of the microphone is set to the unique frequency according to the frequency information obtained by demodulation;

[0040] The front-end amplifier module of the wireless microphone picks up and amplifies the voice signal, and sends it to the wireless speaker through the U-segment wireless transmission module of the microphone;

[0041] The wireless speaker filters the voice signal received by the U-segment wireless receiving module through the audio filter module, and drives the speaker to play the filtered voice signal through the audio power amplifier module.

[0042] Compared with the prior art, the beneficial effects of the present invention are as follows: a global infrared radiation frequency management ball is used to radiate unique frequency point information different from other independent spaces in an independent space, and the wireless microphone is pre-matched with the wireless speaker in the independent space. After entering the independent space, the wireless microphone completes the frequency matching according to the received unique frequency point information, so that the voice signal received by the wireless microphone can be transmitted to the wireless speaker through the channel corresponding to the unique frequency point for sound amplification, thereby achieving non-interference between the independent spaces, and automatically switching the frequency when the wireless microphone enters different independent spaces, thus solving the problem of frequent manual frequency matching and frequency crosstalk. The wireless speaker does not require complicated wiring, and has a good sound amplification effect, which greatly reduces the cost and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the system architecture of a wireless sound reinforcement system with full-range infrared radiation frequency matching disclosed in an embodiment of the present invention;

[0044] Figure 2 A schematic diagram of signal radiation of a global infrared radiation frequency management ball in multiple independent spaces disclosed in an embodiment of the present invention;

[0045] Figure 3 A schematic diagram of a wireless microphone switching between multiple independent spaces disclosed in an embodiment of the present invention;

[0046] Figure 4 A schematic diagram of the internal structure of a global infrared radiation frequency management ball disclosed in an embodiment of the present invention;

[0047] Figure 5 A schematic diagram of the working process of a global infrared radiation frequency management ball disclosed in an embodiment of the present invention;

[0048] Figure 6 A schematic diagram of the structure of a wireless speaker disclosed in an embodiment of the present invention;

[0049] Figure 7A schematic diagram of the working process of a wireless speaker disclosed in an embodiment of the present invention;

[0050] Figure 8 A schematic diagram of the structure of a wireless microphone disclosed in an embodiment of the present invention;

[0051] Fig. 9 A schematic diagram of the working process of a wireless microphone disclosed in an embodiment of the present invention;

[0052] Fig.10 The present invention is a flowchart of a wireless sound reinforcement method for full-range infrared radiation frequency matching disclosed in an embodiment of the present invention.

[0053] In the figure, the corresponding relationship between each component and the reference numeral is as follows:

[0054] 1. Global infrared radiation frequency management ball; 11. Ball processor; 12. Ball frequency matching button; 13. Display screen; 14. Frequency setting button; 15. Ball U-segment wireless transmission module; 16. QPSK modulation module; 17. Infrared transmission drive circuit; 18. Infrared transmitting tube; 2. Wireless speaker; 21. Speaker processor; 22. Speaker frequency matching button; 23. U-segment wireless receiving module; 24. Audio filter module; 25. Audio power amplifier module; 26. Speaker; 3. Wireless microphone; 31. Microphone processor; 32. Infrared receiving tube; 33. QPSK demodulation module; 34. Microphone U-segment wireless transmission module; 35. Microphone front-end amplifier module; 36. Volume adjustment button; 37. Laser pen. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0057] like Figure 1 As shown, a wireless sound reinforcement system for global infrared radiation frequency matching according to the present invention comprises: a global infrared radiation frequency management ball 1, a wireless speaker 2 and a wireless microphone 3;

[0058] The global infrared radiation frequency management ball 1 is arranged in an independent space, and at least one wireless speaker 2 is distributed in the independent space;

[0059] The global infrared radiation frequency management ball 1 radiates infrared signals of a unique frequency point in an independent space in a coverage manner, and the wireless speaker 2 is pre-matched to the unique frequency point by the global infrared radiation frequency management ball 1, so as to work under the channel corresponding to the unique frequency point;

[0060] After the wireless microphone 3 enters the independent space, it receives the information of the unique frequency point and sets the wireless microphone 3 to work on the channel corresponding to the unique frequency point;

[0061] The wireless microphone 3 sends the received voice signal to the wireless speaker 2 through the channel corresponding to the unique frequency point, and the wireless speaker 2 amplifies and plays the voice signal.

[0062] In this embodiment, a global infrared radiation frequency management ball 1 is used to radiate unique frequency point information different from other independent spaces in an independent space, and is pre-matched with a wireless speaker 2 in the independent space. After entering the independent space, the wireless microphone 3 completes the matching according to the received unique frequency point information, so that the voice signal received by the wireless microphone 3 can be transmitted to the wireless speaker 2 for sound amplification through the channel corresponding to the unique frequency point, thereby achieving non-interference between the independent spaces, and automatically switching the frequency when the wireless microphone enters different independent spaces, thereby solving the problem of frequent manual matching and cross-frequency. The wireless speaker does not require complicated wiring, and has a good sound amplification effect, which greatly reduces the cost and improves the user experience.

[0063] Specifically, based on the characteristics of infrared signals, infrared signals radiated in an independent space cannot propagate outside the independent space. Figure 2 As shown, the global infrared radiation frequency management ball realizes coverage radiation in 6 classrooms. Each global infrared radiation frequency management ball 1 can radiate infrared signals in an independent space. The shadows of different concentrations in the figure represent the signal strength at the current position in the space. Taking the classroom as an example, all spaces in the entire classroom are filled with the frequency information of the classroom. Each teacher carries his own wireless microphone 3 to each classroom and can only receive the infrared signal in the current classroom, and quickly complete the automatic frequency matching, thus avoiding signal interference between different classrooms.

[0064] Moreover, the global infrared radiation frequency management ball 1 radiates a unique frequency point in each independent space that is different from other independent spaces. That is, in the entire school, the frequency point radiated by the global infrared radiation frequency management ball 1 in each classroom is different, and the frequency point of each classroom is unique.

[0065] In order to save speaker wiring, the present invention uses a wireless speaker 2. Figure 1As shown, in order to make the sound of the classroom uniform, generally one classroom is evenly distributed with 5 wireless speakers 2. First, after installing the five wireless speakers 2, press the speaker frequency matching button 22 of the wireless speakers 2; then, after the global infrared radiation frequency management ball 1 sets the unique frequency point of the whole school, press the ball frequency matching button 12 on the ball, then the wireless speakers 2 and the global infrared radiation frequency management ball 1 communicate and shake hands on the public channel, and the global infrared radiation frequency management ball 1 immediately locks the frequency point of the 5 wireless speakers 2 to the unique frequency point of the whole school, so as to realize the transmission of the audio of the wireless microphone 3 and the 5 wireless speakers 2 in the classroom.

[0066] like Figure 3 As shown, based on the above implementation mode, after each teacher brings his or her own wireless microphone 3 into any classroom, the wireless microphone 3 will receive the frequency information of the classroom, and work at this frequency, and amplify the received voice signal through the wireless speaker 2.

[0067] Furthermore, after the wireless microphone 3 leaves the first independent space, the infrared signal of the unique frequency radiated in the first independent space does not exist in the space, and the communication between the wireless microphone 3 and the wireless speaker 2 in the first independent space is disconnected, and the received voice signal cannot be sent to the wireless speaker 2 in the first independent space;

[0068] After entering the second independent space, the information of the unique frequency point of the corresponding independent space radiated by the global infrared radiation frequency management ball 1 in the second independent space is received, and the wireless microphone 3 is set to work in the channel corresponding to the unique frequency point in the second independent space, and the received voice signal is sent to the wireless speaker 2 in the second independent space.

[0069] Specifically, when a teacher brings his / her wireless microphone 3 into another classroom, the wireless microphone 3 will automatically switch to the frequency of the other classroom.

[0070] like Figure 4 As shown, in the above embodiment, preferably, the global infrared radiation frequency management ball 1 includes a ball processor 11, a ball frequency matching button 12, a display screen 13, a frequency point setting button 14, a ball U-segment wireless transmission module 15, a QPSK modulation module 16, an infrared transmission drive circuit 17 and an infrared transmission tube 18;

[0071] The ball frequency matching button 12, the display screen 13, the frequency setting button 14, the ball U segment wireless transmitting module 15 and the QPSK modulation module 16 are respectively connected to the ball processor 11, the infrared transmitting driving circuit 17 is connected to the QPSK modulation module 16, and the infrared transmitting driving circuit 17 is connected to the infrared transmitting tube 18;

[0072] The display screen 13 displays the current frequency point information of the global infrared radiation frequency management ball 1, and the ball processor 11 adjusts the current frequency point information according to the trigger signal of the frequency point setting button 14;

[0073] When the ball frequency matching button 12 is triggered, the ball processor 11 sends the frequency point information to the wireless speaker 2 through the ball U-segment wireless transmission module 15, so that the wireless speaker 2 can perform frequency matching;

[0074] The ball processor 11 sends the frequency information to the QPSK modulation module 16 for signal modulation, and drives the infrared transmitting tube 18 to transmit the modulated signal through the infrared transmitting driving circuit 17, so as to realize the coverage radiation of the infrared signal in the independent space.

[0075] Specifically, the global infrared radiation frequency management ball 1 is based on a high-performance single-chip microcomputer, and uses C language for software programming to control various external devices, including the U-segment wireless transmission chip of the IIC interface, the QPSK modulator of the SPI interface, and peripherals such as frequency buttons, frequency addition and subtraction, and display, to achieve simple and efficient control. The software architecture adopts streamlined logic, and by finely adjusting the function allocation and timing of each communication unit, it is possible to efficiently and comprehensively realize all functions of the entire system without using a ready-made operating system (such as ucos, freertos, rtt, etc.). If an embedded operating system is transplanted, it will lead to the consumption of chip resources, including ram, flash space, and operating system code execution time, which will cause more or less consumption. The system avoids these consumptions through careful settings, and ensures that each unit and the core single-chip microcomputer communicate normally, stably, and orderly, and can also ensure the real-time and accuracy of the interface (buttons and screens, etc.) that interacts with the entire product and the user, bringing a good user experience.

[0076] Among them, the infrared emitting tubes 18 preferably use 36 infrared emitting tubes 18, and the 36 infrared emitting tubes 18 are arranged in two circles, with 18 in each circle, and can radiate a space of 30 meters × 30 meters at maximum, and use the infrared signals emitted by them to radiate the frequency information of the space in the entire range.

[0077] The global infrared radiation frequency management ball 1 can send the latest frequency information to the entire classroom space at all times in a 360-degree all-round manner. It will also manage the frequency information and other parameter settings of the wireless speaker 2. When the frequency pairing button of the wireless speaker 2 and the management ball is pressed, the wireless speaker 2 and the global infrared radiation frequency management ball 1 both work on a public channel (such as 620MHz). The global infrared radiation frequency management ball 1 will send the school's only frequency information to the wireless speaker 2 through the ball U-segment wireless transmission module 15. The wireless speaker 2 will work at the frequency immediately after receiving the frequency information. When other parameter settings (such as equalization, power, and anti-howling) change, the global infrared radiation frequency management ball 1 can notify the wireless speaker 2 through the ball U-segment wireless transmission module 15, and will notify the wireless microphone 3 through the radiated infrared signal.

[0078] like Figure 5 As shown, in general, the workflow of the global infrared radiation frequency management ball 1 is as follows:

[0079] (1) After power-on, the saved channel information is read from the flash of the ball processor 11. If it is used for the first time, it is set as the default channel and displayed on the display screen 13. The ball U segment wireless transmission module 15 in the global infrared radiation frequency management ball 1 is only used to match the frequency with the wireless speaker 2, so it will not be turned on immediately;

[0080] (2) Entering the main loop, the infrared transmitting tube 18 sends the infrared signal of the corresponding frequency at a fixed time, waiting for the wireless microphone 3 to read;

[0081] (3) When the trigger signal of the ball frequency matching button 12 is detected, the frequency matching is performed, and the display screen 13 displays the channel information after the frequency matching is completed;

[0082] (4) Execute (2) and (3) in a loop.

[0083] like Figure 6 and Figure 7 As shown, in the above embodiment, preferably, the wireless speaker 2 includes a speaker processor 21, a speaker frequency matching button 22, a U-band wireless receiving module 23, an audio filter module 24, an audio amplifier module 25 and a speaker 26;

[0084] The speaker frequency-binding button 22 and the U-segment wireless receiving module 23 are respectively connected to the speaker processor 21, and when the speaker frequency-binding button 22 is triggered, the speaker processor 21 controls the U-segment wireless receiving module 23 to receive the frequency point information sent by the U-segment wireless transmitting module 15, and realizes working under the channel corresponding to the frequency point information;

[0085] The U-band wireless receiving module 23 receives the voice signal sent by the wireless microphone 3 at the channel corresponding to the frequency information, filters the voice signal through the audio filtering module 24, and the audio power amplifier module 25 drives the speaker 26 to play the filtered voice signal.

[0086] In this embodiment, the frequency matching process between the global infrared radiation frequency management ball 1 and the wireless speaker 2 includes:

[0087] (1) Press the speaker frequency binding button 22 of the wireless speaker 2, and the LED indicator flashes, indicating that the frequency binding state has been entered;

[0088] (2) The global infrared radiation frequency management ball 1 first adjusts the frequency through the frequency setting button 14, and the display screen 13 will flash to display the frequency information;

[0089] (3) Global infrared radiation frequency management ball 1 presses the frequency matching key, then the ball U segment wireless transmission module 15 is initialized, and the channel information is sent through the ball U segment wireless transmission module 15;

[0090] (4) The wireless speaker 2 receives the frequency information and adjusts the U-band wireless receiving module 23 to the new channel. The LED indicator stops flashing, indicating that the new channel is received and the frequency-binding state is exited;

[0091] (5) The global infrared radiation frequency management ball 1 presses the ball frequency pairing key again to adjust its own ball U-segment wireless transmission module 15 to the new channel, turns off the ball U-segment wireless transmission module 15, stops the display screen 13 from flashing, and exits the frequency pairing state; finally, the ball processor 11 of the global infrared radiation frequency management ball 1 saves the new channel information in the on-chip flash.

[0092] During this process, the U-segment wireless transmitting module 15 on the global infrared radiation frequency management ball 1 does not send voice. Its main function is to send channel information to the wireless speaker 2 during frequency matching, and it will no longer work after frequency matching is completed.

[0093] like Figure 8 As shown, in the above embodiment, preferably, the wireless microphone 3 includes a microphone processor 31, an infrared receiving tube 32, a QPSK demodulation module 33, a microphone U-segment wireless transmission module 34 and a microphone front-end amplifier module 35;

[0094] After the infrared receiving tube 32 receives the infrared signal sent by the infrared transmitting tube 18, the signal is demodulated by the QPSK demodulation module 33, and the microphone processor 31 sets the frequency of the microphone U-segment wireless transmitting module 34 to the unique frequency according to the frequency information obtained by the signal demodulation;

[0095] The microphone front-end amplifier module 35 picks up and amplifies the voice signal, and sends the voice signal to the wireless speaker 2 in the channel corresponding to the unique frequency point through the microphone U-segment wireless transmission module 34.

[0096] like Fig. 9 As shown, specifically, the microphone processor 31 is the main control chip of the wireless microphone 3, responsible for scheduling other modules and completing all tasks. After power-on, its workflow is described as follows:

[0097] (1) Start the infrared receiving tube 32 to receive and demodulate data to obtain the channel information of the current classroom. If unsuccessful, repeat this step;

[0098] (2) Obtaining channel information, the LED indicator flashes for a short time to indicate that the channel is successfully obtained, and the microphone processor 31 initializes the microphone U-band wireless transmission module 34 accordingly. After the initialization is completed, the audio transmission on the wireless microphone 3 and the audio reception on the wireless speaker 2 work on the same channel, and the two can perform wireless audio transmission. When speaking to the wireless microphone 3, the wireless speaker 2 can make a sound.

[0099] The above process is executed in a loop. When the infrared receiving part detects new channel information, it means that another classroom has been entered. Then, by resetting the above process, voice data can be sent to the wireless speaker 2 in the new classroom.

[0100] According to the above implementation, in addition to voice transmission, the frequency matching between the frequency management ball and the wireless speaker 2, and the volume setting of the wireless speaker 2 by the wireless microphone 3 are realized through the auxiliary channel function of the wireless transceiver chip. The auxiliary channel is a function of the wireless audio transceiver chip that transmits a small amount of parameters. The auxiliary channel data is transmitted together with the audio data, and the data volume is small, so it does not affect the reception and transmission of audio data. Its implementation method is relatively simple. When data needs to be sent, the data to be sent is written into an auxiliary channel register with a fixed address in the sending end code. The wireless audio chip will send the data to the receiving end, and the receiving end can read it in the corresponding auxiliary channel register. Generally speaking, two bytes of data are sent each time, one byte indicates which type of data is currently being sent, such as channel or volume, and the other byte is the specific parameter value.

[0101] In the above embodiment, preferably, the wireless microphone 3 further includes a volume adjustment button 36, and when the volume adjustment button 36 is triggered, the playback volume of the voice signal is adjusted through the volume adjustment circuit.

[0102] In the above embodiment, preferably, the wireless microphone 3 further comprises a laser pen 37, which comprises a laser tube and a laser key. When the laser key is triggered, the laser tube is controlled to emit light, and the laser tube is turned off when the laser key is triggered.

[0103] like Fig.10 As shown, the present invention also proposes a wireless sound reinforcement method for full-range infrared radiation frequency matching, which is applied to the wireless sound reinforcement system for full-range infrared radiation frequency matching disclosed in any one of the above embodiments, including:

[0104] A unique frequency point is set for the global infrared radiation frequency management ball 1 in the independent space, and an infrared signal of the unique frequency point is radiated in a covering manner in the independent space;

[0105] The wireless speaker 2 in the independent space is matched to the only frequency point by the global infrared radiation frequency management ball 1;

[0106] After entering the independent space, the wireless microphone 3 receives the infrared signal from the global infrared radiation frequency management ball 1 and works at the only frequency point corresponding to the infrared signal;

[0107] The wireless microphone 3 sends the voice signal to the wireless speaker 2 through the channel corresponding to the unique frequency point, and the voice signal is amplified and played through the wireless speaker 2.

[0108] In the above implementation, preferably, the wireless sound reinforcement method of global infrared radiation frequency matching further includes:

[0109] After the wireless microphone 3 leaves the first independent space, the communication with the wireless speaker 2 in the first independent space is disconnected;

[0110] After entering the second independent space, the information of the unique frequency point of the corresponding independent space radiated by the global infrared radiation frequency management ball 1 in the second independent space is received, and the wireless microphone 3 is set to work in the channel corresponding to the unique frequency point in the second independent space, and the received voice signal is sent to the wireless speaker 2 in the second independent space.

[0111] In the above implementation, preferably, the wireless sound reinforcement method of global infrared radiation frequency matching specifically includes:

[0112] The global infrared radiation frequency management ball 1 radiates an infrared signal of a unique frequency point through the infrared transmitting tube 18 in an independent space according to the unique frequency point set;

[0113] When the ball frequency matching button 12 of the global infrared radiation frequency management ball 1 is triggered, the ball processor 11 sends the frequency point information to the wireless speaker 2 through the ball U-segment wireless transmission module 15;

[0114] The U-band wireless receiving module 23 of the wireless speaker 2 receives the frequency information, performs frequency matching with the global infrared radiation frequency management ball 1, and works under the channel corresponding to the frequency information;

[0115] When the wireless microphone 3 receives the infrared signal after entering the independent space, the frequency of the microphone U-segment wireless transmission module 34 is set to the unique frequency according to the frequency information obtained by demodulation;

[0116] The front-end amplifier module 35 of the wireless microphone 3 picks up and amplifies the voice signal, and sends it to the wireless speaker 2 through the microphone U-segment wireless transmission module 34;

[0117] The wireless speaker 2 filters the voice signal received by the U-segment wireless receiving module 23 through the audio filtering module 24 , and drives the speaker 26 to play the filtered voice signal through the audio power amplifier module 25 .

[0118] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wireless sound reinforcement system with full-range infrared radiation frequency matching, characterized in that: include: Global infrared radiation frequency management ball, wireless speaker and wireless microphone; The global infrared radiation frequency management ball is arranged in an independent space, and at least one wireless speaker is distributed in the independent space; The global infrared radiation frequency management ball radiates infrared signals of a unique frequency point in a covering manner in the independent space, and the wireless speaker is pre-matched to the unique frequency point by the global infrared radiation frequency management ball, so as to work at the channel corresponding to the unique frequency point; After the wireless microphone enters the independent space, it receives information about the unique frequency point and sets the wireless microphone to work on a channel corresponding to the unique frequency point; The wireless microphone sends the received voice signal to the wireless speaker through the channel corresponding to the unique frequency point, and the wireless speaker amplifies and plays the voice signal; After the wireless microphone leaves the first independent space, the infrared signal of the unique frequency radiated in the first independent space does not exist in the space, the wireless microphone is disconnected from the communication with the wireless speaker in the first independent space, and the received voice signal cannot be sent to the wireless speaker in the first independent space; After entering the second independent space, receiving information of the unique frequency point of the corresponding independent space radiated by the global infrared radiation frequency management ball in the second independent space, setting the wireless microphone to work at the channel corresponding to the unique frequency point in the second independent space, and sending the received voice signal to the wireless speaker in the second independent space; The global infrared radiation frequency management ball includes a ball processor, a ball frequency matching button, a display screen, a frequency point setting button, a ball U-segment wireless transmission module, a QPSK modulation module, an infrared transmission drive circuit and an infrared transmission tube; The ball frequency matching button, the display screen, the frequency point setting button, the ball U segment wireless transmission module and the QPSK modulation module are respectively connected to the ball processor, the infrared transmission drive circuit is connected to the QPSK modulation module, and the infrared transmission drive circuit is connected to the infrared transmission tube; The display screen displays the current frequency information of the global infrared radiation frequency management ball, and the ball processor adjusts the current frequency information according to the trigger signal of the frequency setting button; When the ball frequency matching button is triggered, the ball processor sends the frequency point information to the wireless speaker through the ball U-segment wireless transmission module for the wireless speaker to perform frequency matching; The ball processor sends the frequency point information to the QPSK modulation module for signal modulation, and drives the infrared transmitting tube to transmit the modulated signal through the infrared transmitting driving circuit, thereby realizing the coverage radiation of the infrared signal in the independent space.

2. The wireless sound reinforcement system with global infrared radiation frequency matching according to claim 1 is characterized in that: The wireless speaker includes a speaker processor, a speaker frequency matching button, a U-band wireless receiving module, an audio filter module, an audio power amplifier module and a speaker; The speaker frequency-binding button and the U-segment wireless receiving module are respectively connected to the speaker processor, and when the speaker frequency-binding button is triggered, the speaker processor controls the U-segment wireless receiving module to receive the frequency point information sent by the ball U-segment wireless transmitting module, so as to work on the channel corresponding to the frequency point information; The U-band wireless receiving module receives the voice signal sent by the wireless microphone in the channel corresponding to the frequency information, filters the voice signal through the audio filtering module, and drives the speaker to play the filtered voice signal through the audio power amplifier module.

3. The wireless sound reinforcement system with full-range infrared radiation frequency matching according to claim 2 is characterized in that: The wireless microphone includes a microphone processor, an infrared receiving tube, a QPSK demodulation module, a microphone U-segment wireless transmission module and a microphone front-end amplifier module; After the infrared receiving tube receives the infrared signal sent by the infrared transmitting tube, the QPSK demodulation module performs signal demodulation, and the microphone processor sets the frequency of the microphone U-segment wireless transmitting module to the only frequency corresponding to the frequency information according to the frequency information obtained by signal demodulation; The microphone front-end amplification module picks up and amplifies the voice signal, and sends the voice signal to the wireless speaker at the channel corresponding to the unique frequency point through the microphone U-segment wireless transmission module.

4. The wireless sound reinforcement system with full-range infrared radiation frequency matching according to claim 3 is characterized in that: The wireless microphone further comprises a volume adjustment button, and when the volume adjustment button is triggered, the playing volume of the voice signal is adjusted through a volume adjustment circuit.

5. The wireless sound reinforcement system with full-range infrared radiation frequency matching according to claim 3 or 4, characterized in that: The wireless microphone further comprises a laser pen, which comprises a laser tube and a laser key. When the laser key is triggered, the laser tube is controlled to emit light, and when the laser key is triggered, the laser tube is turned off.

6. A wireless sound amplification method for full-range infrared radiation frequency matching, characterized in that: A wireless sound reinforcement system for global infrared radiation frequency matching as claimed in any one of claims 1 to 5, comprising: A unique frequency point is set for the global infrared radiation frequency management ball in the independent space, and an infrared signal of the unique frequency point is radiated in the independent space in a covering manner; The wireless speakers in the independent space are matched to the unique frequency point by the global infrared radiation frequency management ball; After entering the independent space, the wireless microphone receives the infrared signal of the global infrared radiation frequency management ball and operates at the unique frequency point corresponding to the infrared signal; The wireless microphone sends the voice signal to the wireless speaker through the channel corresponding to the unique frequency point, and the wireless speaker amplifies and plays the voice signal; After the wireless microphone leaves the first independent space, the communication with the wireless speaker in the first independent space is disconnected; After entering the second independent space, receiving information of the unique frequency point of the corresponding independent space radiated by the global infrared radiation frequency management ball in the second independent space, setting the wireless microphone to work at the channel corresponding to the unique frequency point in the second independent space, and sending the received voice signal to the wireless speaker in the second independent space; The global infrared radiation frequency management ball radiates an infrared signal of a unique frequency point through an infrared transmitting tube in the independent space according to the set unique frequency point; When the ball frequency matching button of the global infrared radiation frequency management ball is triggered, the ball processor sends the frequency point information to the wireless speaker through the ball U-segment wireless transmission module; The U-band wireless receiving module of the wireless speaker receives the frequency point information, performs frequency matching with the global infrared radiation frequency management ball, and works under the channel corresponding to the frequency point information; When the wireless microphone receives the infrared signal after entering the independent space, the frequency of the U-band wireless transmission module of the microphone is set to the unique frequency according to the frequency information obtained by demodulation; The front-end amplifier module of the wireless microphone picks up and amplifies the voice signal, and sends it to the wireless speaker through the U-segment wireless transmission module of the microphone; The wireless speaker filters the voice signal received by the U-segment wireless receiving module through the audio filter module, and drives the speaker to play the filtered voice signal through the audio power amplifier module.

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