CN114827793A - Global infrared radiation frequency-matching wireless sound amplification system and wireless sound amplification method - Google Patents
Global infrared radiation frequency-matching wireless sound amplification system and wireless sound amplification method Download PDFInfo
- Publication number
- CN114827793A CN114827793A CN202210431560.7A CN202210431560A CN114827793A CN 114827793 A CN114827793 A CN 114827793A CN 202210431560 A CN202210431560 A CN 202210431560A CN 114827793 A CN114827793 A CN 114827793A
- Authority
- CN
- China
- Prior art keywords
- wireless
- frequency
- frequency point
- loudspeaker
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 108
- 230000003321 amplification Effects 0.000 title claims abstract description 40
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000001960 triggered effect Effects 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/04—Electrically-operated educational appliances with audible presentation of the material to be studied
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/07—Applications of wireless loudspeakers or wireless microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Acoustics & Sound (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Educational Technology (AREA)
- Educational Administration (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a global infrared radiation frequency-matching wireless sound amplifying system and a wireless sound amplifying method, wherein in the system, a global infrared radiation frequency management ball is arranged in an independent space, infrared signals of a unique frequency point are radiated in an overlaying manner, at least one wireless loudspeaker is arranged in the independent space, the global infrared radiation frequency management ball is used in advance for frequency matching, and the work under a frequency channel corresponding to the unique frequency point is realized; after the wireless microphone enters the independent space, receiving the information of the unique frequency point, and working on a channel corresponding to the unique frequency point; the wireless microphone sends the received voice signal to the wireless loudspeaker through the channel corresponding to the unique frequency point, and the voice signal is amplified and played through the wireless loudspeaker. According to the technical scheme, mutual interference among spaces is avoided, the frequency points can be automatically switched when the wireless microphone enters different independent spaces, the wireless loudspeaker does not need complex wiring, the sound amplification effect is good, the cost is greatly reduced, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a global infrared radiation frequency-matching wireless sound amplifying system and a global infrared radiation frequency-matching wireless sound amplifying method.
Background
The traditional wireless microphone usually adopts radio wave communication, and wireless signals of the traditional wireless microphone can penetrate through a wall, so that different frequency points are required to be used when a plurality of sets of wireless microphones and receiving hosts are used together, for example, classrooms in schools, and if the wireless microphones and the receiving hosts are used for lecturing at the same time, different frequency points are required to be used by each classroom to transmit respective sounds so as to avoid crosstalk and crosstalk.
Therefore, before the conventional wireless microphone is used, the wireless microphone needs to be close to an infrared transmitting tube (generally only one transmitting tube) in a receiving host within a short distance for frequency alignment, then the wireless microphone can be formally used, the one-to-one locking is realized, and the frequency alignment locking needs to be closed again when a receiving host is changed. For school teaching, or when each classroom is provided with classroom equipment, the fixed microphones of corresponding frequency points are paired in each classroom in a one-to-one mode; or the teacher holds his own microphone (one for one) and needs to perform complicated frequency matching before lecturing.
In addition, in the aspect of installation, the traditional teaching wireless sound amplification system needs a long horn wire to be wired between a general receiving host and a horn, so that tone quality is damaged, wiring is complicated, manual installation and material cost are high, and the traditional teaching wireless sound amplification system is not attractive.
Disclosure of Invention
Aiming at the problems, the invention provides a global infrared radiation frequency-matching wireless sound amplification system, which radiates unique frequency point information different from other independent spaces in an independent space through a global infrared radiation frequency management ball, and matches the frequency with a wireless loudspeaker in the independent space in advance, after a wireless microphone enters the independent space, frequency matching is completed according to the received unique frequency point information, so that a voice signal received by the wireless microphone can be transmitted to the wireless loudspeaker through a frequency channel corresponding to the unique frequency point for sound amplification, mutual noninterference among the independent spaces is realized, automatic frequency point switching is realized when the wireless microphone enters the different independent spaces, the problems of frequent manual frequency matching and frequency serial are solved, the wireless loudspeaker does not need complicated wiring, the sound amplification effect is good, the cost is greatly reduced, and the user experience is improved.
In order to achieve the above object, the present invention provides a global infrared radiation frequency-matching wireless sound amplification system, which includes: the system comprises a global infrared radiation frequency management ball, a wireless loudspeaker and a wireless microphone;
the global infrared radiation frequency management ball is arranged in an independent space, and at least one wireless loudspeaker is arranged in the independent space;
the global infrared radiation frequency management ball coveredly radiates the infrared signals of the unique frequency points in the independent space, and the wireless loudspeaker is subjected to frequency matching in advance by the global infrared radiation frequency management ball to be the unique frequency points, so that the wireless loudspeaker can work under the channels corresponding to the unique frequency points;
after the wireless microphone enters the independent space, receiving the information of the unique frequency point, and setting the wireless microphone to work in a channel corresponding to the unique frequency point;
and the wireless microphone sends the received voice signal to the wireless loudspeaker through the channel corresponding to the unique frequency point, and the voice signal is played by the wireless loudspeaker in a sound amplification way.
In the above technical solution, preferably, the global infrared radiation frequency-matching wireless sound amplifying system further includes:
after the wireless microphone leaves from a first independent space, infrared signals of a unique frequency point radiated in the first independent space do not exist in the space, the wireless microphone is disconnected from the wireless loudspeaker in the first independent space in communication, and the received voice signals cannot be sent to the wireless loudspeaker in the first independent space;
and after entering a second independent space, receiving information of the unique frequency point, which is radiated by the global infrared radiation frequency management ball in the second independent space and corresponds to the independent space, setting the wireless microphone to work in a channel corresponding to the unique frequency point in the second independent space, and sending the received voice signal to the wireless loudspeaker in the second independent space.
In the above technical solution, preferably, the global infrared radiation frequency management ball includes a ball processor, a ball frequency alignment key, a display screen, a frequency point setting key, a ball U-segment wireless transmission module, a QPSK modulation module, an infrared transmission driving circuit, and an infrared transmission tube;
the ball frequency-matching key, the display screen, the frequency point setting key, the ball U-section wireless transmitting module and the QPSK modulating module are respectively connected with the ball processor, the infrared transmitting drive circuit is connected with the QPSK modulating module, and the infrared transmitting drive circuit is connected with the infrared transmitting tube;
the display screen displays the current frequency point information of the global infrared radiation frequency management ball, and the ball processor adjusts the current frequency point information according to the trigger signal of the frequency point setting key;
when the ball frequency-matching key is triggered, the ball processor sends frequency point information to the wireless loudspeaker through the ball U-section wireless transmitting module so that the wireless loudspeaker can perform frequency matching;
the ball processor sends the frequency point information to the QPSK modulation module for signal modulation, and drives the infrared emission tube to emit the modulated signal through the infrared emission driving circuit, so that the covering radiation of the infrared signal in the independent space is realized.
In the above technical solution, preferably, the wireless speaker includes a speaker processor, a speaker frequency-matching key, a U-segment wireless receiving module, an audio filtering module, an audio power amplifier module, and a speaker;
the loudspeaker frequency-matching key and the U-section wireless receiving module are respectively connected with the loudspeaker processor, and when the loudspeaker frequency-matching key is triggered, the loudspeaker processor controls the U-section wireless receiving module to receive frequency point information sent by the U-section wireless transmitting module, so that the frequency point information can work in a channel corresponding to the frequency point information;
the U-section wireless receiving module receives the voice signals sent by the wireless microphone under the frequency point information corresponding channel, the voice signals are filtered through the audio filtering module, and the audio power amplification module drives the loudspeaker to play the filtered voice signals.
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 transmitting module, and a microphone front-end amplifying module;
after the infrared receiving tube receives the infrared signal sent by the infrared transmitting tube, the signal demodulation is carried out through the QPSK demodulation module, and the microphone processor sets the frequency point of the U-section wireless transmitting module of the microphone as the unique frequency point corresponding to the frequency point information according to the frequency point information obtained by the signal demodulation;
the microphone front-end amplification module picks up and amplifies voice signals, and the voice signals are sent to the wireless loudspeaker through the microphone U-section wireless transmission module under the frequency channel corresponding to the unique frequency point.
In the above technical solution, preferably, the wireless microphone further includes a volume adjustment key, and the volume adjustment key adjusts the play volume of the voice signal through a volume adjustment circuit when triggered.
In the above technical solution, preferably, the wireless microphone further includes a laser pen, the laser pen includes a laser tube and a laser key, the laser key controls the laser tube to emit light when being triggered, and the laser tube is closed when the laser key is triggered.
The invention also provides a global infrared radiation frequency-matching wireless sound amplification method, which is applied to the global infrared radiation frequency-matching wireless sound amplification system disclosed by any one of the technical schemes and comprises the following steps:
setting a unique frequency point aiming at a global infrared radiation frequency management ball in an independent space, and covering and radiating an infrared signal of the unique frequency point in the independent space;
the frequency of the wireless loudspeaker in the independent space is subjected to frequency matching by the global infrared radiation frequency management ball to form the unique frequency point;
after the wireless microphone enters the independent space, receiving the infrared signal of the global infrared radiation frequency management ball, and working at the unique frequency point corresponding to the infrared signal;
and the wireless microphone sends the voice signal to the wireless loudspeaker through the channel corresponding to the unique frequency point, and the voice signal is played by the wireless loudspeaker in a sound amplification way.
In the above technical solution, preferably, the global infrared radiation frequency-matching wireless sound amplifying method further includes:
after the wireless microphone leaves from the first independent space, the communication between the wireless microphone and the wireless loudspeaker in the first independent space is disconnected;
and after entering a second independent space, receiving information of the unique frequency point, which is radiated by the global infrared radiation frequency management ball in the second independent space and corresponds to the independent space, setting the wireless microphone to work in a channel corresponding to the unique frequency point in the second independent space, and sending the received voice signal to the wireless loudspeaker in the second independent space.
In the above technical solution, preferably, the global infrared radiation frequency-matching wireless sound amplifying method specifically includes:
the global infrared radiation frequency management ball radiates the infrared signal of the unique frequency point through an infrared emission tube in the independent space according to the set unique frequency point;
when a ball frequency-matching key of the global infrared radiation frequency management ball is triggered, the ball processor sends frequency point information to the wireless loudspeaker through a ball U-section wireless transmitting module;
the U-section wireless receiving module of the wireless loudspeaker receives the frequency point information, performs frequency matching with the global infrared radiation frequency management ball, and works in a channel corresponding to the frequency point information;
when the wireless microphone receives the infrared signal after entering the independent space, setting the frequency point of a U-section wireless transmitting module of the microphone as the unique frequency point according to the frequency point information obtained by demodulation;
the microphone front-end amplification module of the wireless microphone picks up and amplifies voice signals and sends the voice signals to the wireless loudspeaker through the microphone U-section wireless transmission module;
the wireless loudspeaker filters the voice signals received by the U-section wireless receiving module through the audio filtering module, and drives the loudspeaker to play the filtered voice signals through the audio power amplification module.
Compared with the prior art, the invention has the beneficial effects that: through universe infrared radiation frequency management ball the only frequency point information that the radiation is different from other independent spaces in an independent space, and in advance with the wireless loudspeaker in this independent space to the frequency, wireless microphone is after getting into this independent space, accomplish to the frequency according to the only frequency point information received, make the speech signal that wireless microphone was received can transmit to wireless loudspeaker through the channel that this only frequency point corresponds and carry out the public address, realize mutual noninterference between each independent space, and realize the automatic switch frequency point when wireless microphone gets into different independent spaces, it needs frequent manual frequency of the counter-talking to have solved, the problem of string frequency, wireless loudspeaker does not need complicated wiring, and the public address is effectual, greatly reduced the cost, user experience has been promoted.
Drawings
Fig. 1 is a schematic system architecture diagram of a global infrared radiation frequency-matching wireless sound amplification system according to an embodiment of the present invention;
FIG. 2 is a signal radiation diagram of a global infrared radiation frequency management sphere in multiple independent spaces according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a wireless microphone switching among a plurality of independent spaces according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an internal structure of a global infrared radiation frequency management ball according to an embodiment of the present invention;
fig. 5 is a schematic view of a work flow of a global infrared radiation frequency management sphere according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a wireless speaker according to an embodiment of the present invention;
fig. 7 is a schematic view of a working process of a wireless speaker according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a wireless microphone according to an embodiment of the present invention;
fig. 9 is a schematic view of a working process of a wireless microphone according to an embodiment of the present invention;
fig. 10 is a flowchart illustrating a global infrared radiation frequency-matching wireless sound amplification method according to an embodiment of the present invention.
In the drawings, the correspondence between each component and the reference numeral is:
1. a global infrared radiation frequency management ball; 11. a ball processor; 12. a ball frequency-matching key; 13. a display screen; 14. a frequency point setting key; 15. a ball U-section wireless transmitting module; 16. a QPSK modulation module; 17. an infrared emission drive circuit; 18. an infrared emission tube; 2. a wireless loudspeaker; 21. a horn processor; 22. a loudspeaker frequency matching key; 23. a U-section wireless receiving module; 24. an audio filtering module; 25. an audio power amplifier module; 26. a horn; 3. a wireless microphone; 31. a microphone processor; 32. an infrared receiving tube; 33. a QPSK demodulation module; 34. a microphone U section wireless transmitting module; 35. a microphone front end amplification module; 36. a volume adjustment key; 37. a laser pen.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 1, the global infrared radiation frequency-matching wireless sound amplification system provided by the present invention includes: the system comprises a global infrared radiation frequency management ball 1, a wireless loudspeaker 2 and a wireless microphone 3;
the global infrared radiation frequency management ball 1 is arranged in an independent space, and at least one wireless loudspeaker 2 is arranged in the independent space;
the global infrared radiation frequency management ball 1 coveredly radiates the infrared signal of the unique frequency point in an independent space, and the wireless loudspeaker 2 is frequency-matched by the global infrared radiation frequency management ball 1 in advance to be the unique frequency point, so that the work under a channel corresponding to the unique frequency point is realized;
after the wireless microphone 3 enters the independent space, receiving the information of the unique frequency point, and setting the wireless microphone 3 to work in a channel corresponding to the unique frequency point;
the wireless microphone 3 sends the received voice signal to the wireless loudspeaker 2 through the channel corresponding to the unique frequency point, and performs sound amplification playing through the wireless loudspeaker 2.
In this embodiment, through universe infrared radiation frequency management ball 1 the only frequency point information that the radiation is different from other independent spaces in an independent space, and in advance with wireless loudspeaker 2 counterpoint frequently in this independent space, wireless microphone 3 is after getting into this independent space, accomplish the counterpoint frequently according to the only frequency point information received, make the speech signal that wireless microphone 3 received can transmit to wireless loudspeaker 2 through the channel that this only frequency point corresponds and carry out the public address, realize mutual noninterference between each independent space, and realize the automatic switch frequency point when wireless microphone gets into different independent spaces, the problem that needs frequent manual counterpoint frequently, the cluster frequently has been solved, wireless loudspeaker does not need complicated wiring, and the public address is effectual, greatly reduced the cost, user experience has been promoted.
Specifically, the infrared signal radiated in the separate space cannot be propagated to the outside of the separate space based on the characteristics of the infrared signal. As shown in fig. 2, the global infrared radiation frequency management ball respectively implements blanket radiation in 6 classrooms, each global infrared radiation frequency management ball 1 can blanket radiate infrared signals in an independent space, and the shades with different concentrations in the figure represent the signal intensity of the current position in the space. Taking a classroom as an example, all spaces of the whole classroom are full of frequency point information of the classroom, and each teacher carrying a wireless microphone 3 of the teacher can only receive infrared signals in the current classroom when arriving at one classroom, so that automatic frequency alignment is rapidly completed, and signal mutual interference among different classrooms is avoided.
Moreover, the global infrared radiation frequency management sphere 1 radiates unique frequency points different from other independent spaces in each independent space, that is, the frequency points radiated by the global infrared radiation frequency management sphere 1 in each classroom are different in the whole school, and the frequency points in each classroom have uniqueness.
In order to omit the horn wiring, the wireless horn 2 is adopted in the invention. As shown in fig. 1, in order to make the sound in the classroom uniform, 5 wireless speakers 2 are generally uniformly distributed in one classroom. Firstly, after five wireless horns 2 are installed, a horn frequency-matching key 22 of the wireless horn 2 is pressed; then, after the global infrared radiation frequency management ball 1 sets the only frequency point of the whole school, press the ball on the ball to press the key 12 frequently, at this moment wireless loudspeaker 2 and global infrared radiation frequency management ball 1 communicate on the public channel and hold hands, global infrared radiation frequency management ball 1 locks the frequency point of 5 wireless loudspeakers 2 on this only frequency point of the whole school immediately, thus realize that wireless microphone 3 and 5 wireless loudspeaker 2's audio frequency transmit in this classroom.
As shown in fig. 3, based on the above embodiment, after each teacher enters any classroom with its own wireless microphone 3, the wireless microphone 3 receives the frequency point information of the classroom, works at the frequency point, and amplifies and plays the received voice signal through the wireless loudspeaker 2.
Further, after the wireless microphone 3 leaves from the first independent space, no infrared signal of the unique frequency point radiated in the first independent space exists in the space, the wireless microphone 3 is disconnected from the wireless loudspeaker 2 in the first independent space, and the received voice signal cannot be sent to the wireless loudspeaker 2 in the first independent space;
after entering the second independent space, receiving information of the unique frequency point, corresponding to the independent space, radiated by the global infrared radiation frequency management ball 1 in the second independent space, setting the wireless microphone 3 to work in a channel corresponding to the unique frequency point in the second independent space, and sending the received voice signal to the wireless loudspeaker 2 in the second independent space.
Specifically, when the teacher enters another classroom with his or her own wireless microphone 3, the wireless microphone 3 will automatically switch to the frequency point in the other classroom.
As shown in fig. 4, in the above embodiment, preferably, the global infrared radiation frequency management ball 1 includes a ball processor 11, a ball frequency-matching key 12, a display 13, a frequency point setting key 14, a ball U-segment wireless transmitting module 15, a QPSK modulation module 16, an infrared transmitting driving circuit 17 and an infrared transmitting tube 18;
the ball frequency-matching key 12, the display screen 13, the frequency point setting key 14, the ball U-section wireless transmitting module 15 and the QPSK modulating module 16 are respectively connected with the ball processor 11, the infrared transmitting drive circuit 17 is connected with the QPSK modulating module 16, and the infrared transmitting drive circuit 17 is connected with the infrared transmitting tube 18;
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 key 14;
when the ball frequency-matching key 12 is triggered, the ball processor 11 sends the frequency point information to the wireless loudspeaker 2 through the ball U-section wireless transmitting module 15 so that the wireless loudspeaker 2 can perform frequency matching;
the ball processor 11 sends the frequency point 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.
Specifically, the global infrared radiation frequency management ball 1 is based on a high-performance single chip microcomputer, adopts C language to perform software programming, controls various external devices, and comprises a U-section wireless transmitting chip of an IIC interface, a QPSK modulator of an SPI interface, and peripherals such as frequency keys, frequency point addition and subtraction, display and the like, and realizes simple and efficient control. The software architecture adopts simplified logic, and all functions of the whole system can be efficiently and comprehensively realized without using an existing operating system (such as ucos, freertos, rtt and the like) by finely adjusting the function distribution and the time sequence of each communication unit. If the embedded operating system is transplanted, the consumption of chip resources, including ram, flash space, operating system code execution time and the like, can be caused to be more or less costly. The system avoids the consumption through elaborate setting, the communication between each unit and the core single chip microcomputer is normal, stable and orderly, the real-time performance and the accuracy of the response of the interface (keys, screens and the like) of the whole product and the user interaction can be ensured, and good user experience is brought.
The infrared transmitting tubes 18 preferably adopt 36 infrared transmitting tubes 18, the 36 infrared transmitting tubes 18 are arranged in two circles, each circle is 18, the maximum space can be radiated by 30 meters × 30 meters, and the frequency point information of the space can be radiated by utilizing the infrared signals emitted by the infrared transmitting tubes 18 all over the world.
Global infrared radiation frequency management ball 1 can 360 degrees all-round constantly to whole classroom space sending current newest frequency point information, also can manage wireless loudspeaker 2's frequency point information and other parameter settings simultaneously, after pressing wireless loudspeaker 2 and management ball's the key set of frequently, wireless loudspeaker 2 and global infrared radiation frequency management ball 1 all work on public channel (for example 620 MHz). The global infrared radiation frequency management ball 1 can send the information of the frequency point of the whole school to the wireless loudspeaker 2 through the ball U-section wireless transmitting module 15, and the wireless loudspeaker 2 immediately works on the frequency point after receiving the information of the frequency point. When other parameter settings (such as balance, power, howling prevention) are changed, the global infrared radiation frequency management ball 1 can inform the wireless loudspeaker 2 through the ball U-section wireless transmitting module 15, and can inform the wireless microphone 3 through the radiated infrared signal.
As shown in fig. 5, the overall work flow of the global infrared radiation frequency management sphere 1 is as follows:
(1) and after the power is on, the saved channel information is read from the flash of the ball processor 11, and if the channel information is used for the first time, the channel information is set as a default channel and is displayed on the display screen 13. The U-section wireless transmitting module 15 in the global infrared radiation frequency management ball 1 is only used for frequency matching with the wireless loudspeaker 2, so that the U-section wireless transmitting module cannot be started immediately;
(2) entering a main cycle, and sending the infrared signals of the corresponding frequency points by the infrared transmitting tube 18 at regular time to wait for the wireless microphone 3 to read;
(3) when the trigger signal of the ball frequency-matching key 12 is detected, frequency matching is carried out, and channel information after frequency matching is finished is displayed by the display screen 13;
(4) and (3) circularly executing the steps (2) and (3).
As shown in fig. 6 and 7, in the above embodiment, preferably, the wireless loudspeaker 2 includes a loudspeaker processor 21, a loudspeaker frequency-matching key 22, a U-segment wireless receiving module 23, an audio filtering module 24, an audio power amplifier module 25 and a loudspeaker 26;
the loudspeaker frequency matching key 22 and the U-section wireless receiving module 23 are respectively connected with the loudspeaker processor 21, and when the loudspeaker frequency matching key 22 is triggered, the loudspeaker processor 21 controls the U-section wireless receiving module 23 to receive frequency point information sent by the ball U-section wireless transmitting module 15, so that the work under a frequency channel corresponding to the frequency point information is realized;
the U-segment wireless receiving module 23 receives the voice signal sent by the wireless microphone 3 under the frequency point information corresponding channel, filters the voice signal through the audio filtering module 24, and drives the speaker 26 to play the filtered voice signal through the audio power amplifying module 25.
In this embodiment, the process of frequency matching between the global infrared radiation frequency management ball 1 and the wireless loudspeaker 2 includes:
(1) pressing a horn frequency-matching key 22 of the wireless horn 2, the LED indicator lamp flickers, and the indication enters a frequency-matching state;
(2) the global infrared radiation frequency management ball 1 firstly adjusts the frequency point through the frequency point setting key 14, and the display screen 13 can flash to display the frequency point information;
(3) the global infrared radiation frequency management ball 1 is used for initializing a U-section wireless transmitting module 15 when a frequency-pairing key is pressed down, and transmitting channel information through the U-section wireless transmitting module 15;
(4) the wireless loudspeaker 2 receives the frequency point information, adjusts the U-section wireless receiving module 23 to a new frequency channel, the LED indicator lamp does not flicker any more, indicates that the new frequency channel is received, and exits from the frequency alignment state;
(5) the global infrared radiation frequency management ball 1 presses the ball frequency alignment key again, adjusts the own U-segment wireless transmission module 15 to a new channel, closes the U-segment wireless transmission module 15, stops the display screen 13 from flashing, and exits from the frequency alignment 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.
In the process, the U-section wireless transmitting module 15 on the global infrared radiation frequency management ball 1 does not transmit voice, and the main function of the U-section wireless transmitting module is to transmit channel information to the wireless loudspeaker 2 during frequency matching, so that the U-section wireless transmitting module does not work after the frequency matching is finished.
As shown in fig. 8, 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 amplification module 35;
after receiving the infrared signal sent by the infrared transmitting tube 18, the infrared receiving tube 32 demodulates the signal through the QPSK demodulation module 33, and the microphone processor 31 sets the frequency point of the microphone U-section wireless transmitting module 34 as the unique frequency point according to the frequency point information obtained by demodulating the signal;
the microphone front end amplification module 35 picks up and amplifies the voice signal, and sends the voice signal to the wireless loudspeaker 2 through the microphone U-section wireless transmission module 34 in the frequency channel corresponding to the unique frequency point.
As shown in fig. 9, specifically, the microphone processor 31 serves as a main control chip of the wireless microphone 3 and is responsible for scheduling other modules to complete all tasks. After power-on, the work flow is described as follows:
(1) starting the infrared receiving tube 32 to receive and demodulate data to obtain the channel information of the current classroom, and if the channel information is not successful, repeating the step;
(2) and acquiring channel information, flashing the LED indicator light for a short time to indicate that the channel acquisition is successful, and initializing the wireless transmitting module 34 of the U section of the microphone by the microphone processor 31. After the initialization is completed, the audio transmission on the wireless microphone 3 and the audio reception on the wireless loudspeaker 2 work on the same frequency channel, the two can perform wireless audio transmission, and when speaking to the wireless microphone 3, the wireless loudspeaker 2 can make a sound.
The above processes are executed circularly, when the infrared receiving part detects new channel information, it indicates that another classroom is entered, and then the above processes are reset, so that the speech data can be sent to the wireless loudspeaker 2 of the new classroom.
According to the above embodiment, in addition to voice transmission, the frequency management ball and the wireless speaker 2 are paired, and the wireless microphone 3 sets the volume of the wireless speaker 2 through the auxiliary channel function of the wireless transceiver chip. The auxiliary channel is a function of transmitting a small amount of parameters carried by the wireless audio transceiving chip, and the auxiliary channel data is transmitted along with the audio data and has small data volume, so that the transceiving of the audio data is not influenced. The implementation mode is simple, when data needs to be sent, the data needing to be sent is written into an auxiliary channel register with a fixed address in a code of a sending end, the wireless audio chip sends the data to a receiving end, and the receiving end reads the data from the corresponding auxiliary channel register. Typically two bytes of data are sent at a time, one byte indicating what type of data is currently being sent, such as channel or volume, and the other byte being a specific parameter value.
In the above embodiment, preferably, the wireless microphone 3 further includes a volume adjustment key 36, and the volume adjustment key 36 adjusts the playing volume of the voice signal through the volume adjustment circuit when being triggered.
In the above embodiment, preferably, the wireless microphone 3 further includes a laser pen 37, and the laser pen 37 includes a laser tube and a laser key, and the laser tube is controlled to emit light when the laser key is triggered, and is turned off when the laser key is triggered.
As shown in fig. 10, the present invention further provides a global infrared radiation frequency-matching wireless sound amplifying method, which is applied to the global infrared radiation frequency-matching wireless sound amplifying system disclosed in any of the above embodiments, and includes:
setting a unique frequency point aiming at the global infrared radiation frequency management ball 1 in the independent space, and radiating the infrared signal of the unique frequency point in the independent space in a covering manner;
the frequency of the wireless loudspeaker 2 in the independent space is subjected to frequency matching by the global infrared radiation frequency management ball 1 to be a unique frequency point;
after entering the independent space, the wireless microphone 3 receives the infrared signal of the global infrared radiation frequency management ball 1 and works under the unique frequency point corresponding to the infrared signal;
the wireless microphone 3 sends the voice signal to the wireless loudspeaker 2 through the channel corresponding to the unique frequency point, and the voice signal is amplified and played through the wireless loudspeaker 2.
In the foregoing embodiment, preferably, the method for wireless sound amplification with global infrared radiation paired frequency further includes:
after the wireless microphone 3 leaves from the first independent space, the communication with the wireless loudspeaker 2 in the first independent space is disconnected;
after entering the second independent space, receiving information of the unique frequency point, corresponding to the independent space, radiated by the global infrared radiation frequency management ball 1 in the second independent space, setting the wireless microphone 3 to work in a channel corresponding to the unique frequency point in the second independent space, and sending the received voice signal to the wireless loudspeaker 2 in the second independent space.
In the foregoing embodiment, preferably, the method for wireless sound amplification with global infrared radiation paired frequency specifically includes:
the global infrared radiation frequency management ball 1 radiates the infrared signal of the unique frequency point through the infrared emission tube 18 in the independent space according to the set unique frequency point;
when the ball frequency-matching key 12 of the global infrared radiation frequency management ball 1 is triggered, the ball processor 11 sends the frequency point information to the wireless loudspeaker 2 through the ball U-section wireless transmitting module 15;
the U-section wireless receiving module 23 of the wireless loudspeaker 2 receives the frequency point information, performs frequency matching with the global infrared radiation frequency management ball 1, and works in a frequency channel corresponding to the frequency point information;
when the wireless microphone 3 receives an infrared signal after entering the independent space, setting the frequency point of the U-section wireless transmitting module 34 of the microphone as the unique frequency point according to the frequency point information obtained by demodulation;
the microphone front end amplification module 35 of the wireless microphone 3 picks up and amplifies the voice signal, and sends the voice signal to the wireless loudspeaker 2 through the microphone U-section wireless transmission module 34;
the wireless loudspeaker 2 filters the voice signal received by the U-segment wireless receiving module 23 through the audio filtering module 24, and drives the loudspeaker 26 to play the filtered voice signal through the audio power amplifier module 25.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A global infrared radiation frequency-matching wireless sound amplifying system is characterized by comprising: the system comprises a global infrared radiation frequency management ball, a wireless loudspeaker and a wireless microphone;
the global infrared radiation frequency management ball is arranged in an independent space, and at least one wireless loudspeaker is arranged in the independent space;
the global infrared radiation frequency management ball coveredly radiates the infrared signals of the unique frequency points in the independent space, and the wireless loudspeaker is subjected to frequency matching in advance by the global infrared radiation frequency management ball to be the unique frequency points, so that the wireless loudspeaker can work under the channels corresponding to the unique frequency points;
after the wireless microphone enters the independent space, receiving the information of the unique frequency point, and setting the wireless microphone to work in a channel corresponding to the unique frequency point;
and the wireless microphone sends the received voice signal to the wireless loudspeaker through the channel corresponding to the unique frequency point, and the voice signal is played by the wireless loudspeaker in a sound amplification way.
2. The global infrared radiation paired-frequency wireless sound amplification system according to claim 1, further comprising:
after the wireless microphone leaves from a first independent space, infrared signals of a unique frequency point radiated in the first independent space do not exist in the space, the wireless microphone is disconnected from the wireless loudspeaker in the first independent space in communication, and the received voice signals cannot be sent to the wireless loudspeaker in the first independent space;
and after entering a second independent space, receiving information of the unique frequency point, which is radiated by the global infrared radiation frequency management ball in the second independent space and corresponds to the independent space, setting the wireless microphone to work in a channel corresponding to the unique frequency point in the second independent space, and sending the received voice signal to the wireless loudspeaker in the second independent space.
3. The global infrared radiation frequency-matching wireless sound amplifying system according to claim 1, wherein the global infrared radiation frequency management ball comprises a ball processor, a ball frequency-matching key, a display screen, a frequency point setting key, a ball U-segment wireless transmitting module, a QPSK modulating module, an infrared transmitting drive circuit and an infrared transmitting tube;
the ball frequency-matching key, the display screen, the frequency point setting key, the ball U-section wireless transmitting module and the QPSK modulating module are respectively connected with the ball processor, the infrared transmitting drive circuit is connected with the QPSK modulating module, and the infrared transmitting drive circuit is connected with the infrared transmitting tube;
the display screen displays the current frequency point information of the global infrared radiation frequency management ball, and the ball processor adjusts the current frequency point information according to the trigger signal of the frequency point setting key;
when the ball frequency-matching key is triggered, the ball processor sends frequency point information to the wireless loudspeaker through the ball U-section wireless transmitting module so that the wireless loudspeaker can perform frequency matching;
the ball processor sends the frequency point information to the QPSK modulation module for signal modulation, and drives the infrared emission tube to emit the modulated signal through the infrared emission driving circuit, so that the covering radiation of the infrared signal in the independent space is realized.
4. The global infrared radiation frequency-matching wireless sound amplifying system according to claim 3, wherein the wireless loudspeaker comprises a loudspeaker processor, a loudspeaker frequency-matching key, a U-section wireless receiving module, an audio filtering module, an audio power amplifier module and a loudspeaker;
the loudspeaker frequency-matching key and the U-section wireless receiving module are respectively connected with the loudspeaker processor, and when the loudspeaker frequency-matching key is triggered, the loudspeaker processor controls the U-section wireless receiving module to receive frequency point information sent by the U-section wireless transmitting module, so that the frequency point information can work in a channel corresponding to the frequency point information;
the U-section wireless receiving module receives the voice signals sent by the wireless microphone under the frequency point information corresponding channel, the voice signals are filtered through the audio filtering module, and the audio power amplification module drives the loudspeaker to play the filtered voice signals.
5. The global infrared radiation paired-frequency wireless sound amplification system according to claim 4, wherein the wireless microphone comprises 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;
after the infrared receiving tube receives the infrared signal sent by the infrared transmitting tube, the signal demodulation is carried out through the QPSK demodulation module, and the microphone processor sets the frequency point of the U-section wireless transmitting module of the microphone as the unique frequency point corresponding to the frequency point information according to the frequency point information obtained by the signal demodulation;
the microphone front-end amplification module picks up and amplifies voice signals, and the voice signals are sent to the wireless loudspeaker through the microphone U-section wireless transmission module under the frequency channel corresponding to the unique frequency point.
6. The global infrared radiation paired-frequency wireless sound amplifying system according to claim 5, wherein the wireless microphone further comprises a volume adjusting button, and the volume adjusting button is activated to adjust the playing volume of the voice signal through a volume adjusting circuit.
7. The global infrared radiation paired-frequency wireless sound amplification system according to claim 5 or 6, wherein the wireless microphone further comprises a laser pen, the laser pen comprises a laser tube and a laser key, the laser key controls the laser tube to emit light when being triggered, and closes the laser tube when the triggering of the laser key is finished.
8. A global infrared radiation frequency-to-frequency wireless sound amplifying method, which is applied to the global infrared radiation frequency-to-frequency wireless sound amplifying system as claimed in any one of claims 1 to 7, and comprises:
setting a unique frequency point aiming at a global infrared radiation frequency management ball in an independent space, and covering and radiating an infrared signal of the unique frequency point in the independent space;
the frequency of the wireless loudspeaker in the independent space is subjected to frequency matching by the global infrared radiation frequency management ball to form the unique frequency point;
after the wireless microphone enters the independent space, receiving the infrared signal of the global infrared radiation frequency management ball, and working at the unique frequency point corresponding to the infrared signal;
and the wireless microphone sends the voice signal to the wireless loudspeaker through the channel corresponding to the unique frequency point, and the voice signal is played by the wireless loudspeaker in a sound amplification way.
9. The global infrared radiation radio amplification method of claim 8, further comprising:
after the wireless microphone leaves from the first independent space, the communication between the wireless microphone and the wireless loudspeaker in the first independent space is disconnected;
and after entering a second independent space, receiving information of the unique frequency point, which is radiated by the global infrared radiation frequency management ball in the second independent space and corresponds to the independent space, setting the wireless microphone to work in a channel corresponding to the unique frequency point in the second independent space, and sending the received voice signal to the wireless loudspeaker in the second independent space.
10. The global infrared radiation radio public address method according to claim 8 or 9, specifically comprising:
the global infrared radiation frequency management ball radiates the infrared signal of the unique frequency point through an infrared emission tube in the independent space according to the set unique frequency point;
when a ball frequency-matching key of the global infrared radiation frequency management ball is triggered, the ball processor sends frequency point information to the wireless loudspeaker through a ball U-section wireless transmitting module;
a U-section wireless receiving module of the wireless loudspeaker receives the frequency point information, performs frequency matching with the global infrared radiation frequency management ball, and works in a channel corresponding to the frequency point information;
when the wireless microphone receives the infrared signal after entering the independent space, setting the frequency point of a U-section wireless transmitting module of the microphone as the unique frequency point according to the frequency point information obtained by demodulation;
the microphone front-end amplification module of the wireless microphone picks up and amplifies voice signals and sends the voice signals to the wireless loudspeaker through the microphone U-section wireless transmission module;
the wireless loudspeaker filters the voice signals received by the U-section wireless receiving module through the audio filtering module, and drives the loudspeaker to play the filtered voice signals through the audio power amplification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210431560.7A CN114827793A (en) | 2022-04-22 | 2022-04-22 | Global infrared radiation frequency-matching wireless sound amplification system and wireless sound amplification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210431560.7A CN114827793A (en) | 2022-04-22 | 2022-04-22 | Global infrared radiation frequency-matching wireless sound amplification system and wireless sound amplification method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114827793A true CN114827793A (en) | 2022-07-29 |
Family
ID=82507404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210431560.7A Pending CN114827793A (en) | 2022-04-22 | 2022-04-22 | Global infrared radiation frequency-matching wireless sound amplification system and wireless sound amplification method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114827793A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116017635A (en) * | 2022-12-16 | 2023-04-25 | 广东保伦电子股份有限公司 | Frequency scanning method and server for digital U-section wireless microphone |
| CN118072483A (en) * | 2024-03-20 | 2024-05-24 | 广东保伦电子股份有限公司 | Infrared anti-lost alarm system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162436A (en) * | 2016-06-30 | 2016-11-23 | 广东美的制冷设备有限公司 | Player method based on multi-loudspeaker and system |
| CN207505123U (en) * | 2017-10-30 | 2018-06-15 | 深圳市台电实业有限公司 | A kind of teaching pick up facility and system |
| CN207909359U (en) * | 2018-01-24 | 2018-09-25 | 广州市能利教育设备有限公司 | A kind of anti-tampering teaching public address equipment for not going here and there frequency |
| WO2019078597A1 (en) * | 2017-10-17 | 2019-04-25 | 삼성전자주식회사 | Method for generating audio signal using plurality of speakers and microphones and electronic device thereof |
| CN209234048U (en) * | 2018-12-28 | 2019-08-09 | 南京迈宸科技有限公司 | A kind of preferred signal source carrys out the device that infrared voice communication in expansion chamber is applicable in area |
-
2022
- 2022-04-22 CN CN202210431560.7A patent/CN114827793A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106162436A (en) * | 2016-06-30 | 2016-11-23 | 广东美的制冷设备有限公司 | Player method based on multi-loudspeaker and system |
| WO2019078597A1 (en) * | 2017-10-17 | 2019-04-25 | 삼성전자주식회사 | Method for generating audio signal using plurality of speakers and microphones and electronic device thereof |
| CN207505123U (en) * | 2017-10-30 | 2018-06-15 | 深圳市台电实业有限公司 | A kind of teaching pick up facility and system |
| CN207909359U (en) * | 2018-01-24 | 2018-09-25 | 广州市能利教育设备有限公司 | A kind of anti-tampering teaching public address equipment for not going here and there frequency |
| CN209234048U (en) * | 2018-12-28 | 2019-08-09 | 南京迈宸科技有限公司 | A kind of preferred signal source carrys out the device that infrared voice communication in expansion chamber is applicable in area |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116017635A (en) * | 2022-12-16 | 2023-04-25 | 广东保伦电子股份有限公司 | Frequency scanning method and server for digital U-section wireless microphone |
| CN116017635B (en) * | 2022-12-16 | 2023-09-05 | 广东保伦电子股份有限公司 | Frequency scanning method and server for digital U-section wireless microphone |
| CN118072483A (en) * | 2024-03-20 | 2024-05-24 | 广东保伦电子股份有限公司 | Infrared anti-lost alarm system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114827793A (en) | Global infrared radiation frequency-matching wireless sound amplification system and wireless sound amplification method | |
| CN101286265B (en) | Remote controller, electronic apparatus and remote control system | |
| US7639828B2 (en) | Wireless hearing system and method for monitoring the same | |
| CN1476736A (en) | Remote control apparatus and receiver and audio system | |
| CN106448672A (en) | Sound system and control method | |
| JP2003526244A (en) | Apparatus and method for transferring data from one device to another | |
| CN210777819U (en) | Multi-functional wireless live broadcast karaoke bluetooth sound stage lamp of recording | |
| CN209861096U (en) | Multi-functional plug-in card bluetooth karaoke stereo set PCBA board | |
| EP1118971A1 (en) | Transmitting and receiving apparatus of ultrasonic waves | |
| CN201146501Y (en) | Digital cordless microphone | |
| CN208027641U (en) | Drone version indoor instruction map | |
| CN210275505U (en) | Remote control calibrator for police dog | |
| CN103684589A (en) | Audio transmission conversion method and device | |
| CN114715029A (en) | System for separating Bluetooth signal and light control signal and vehicle control system | |
| CN203645708U (en) | Audio transmission conversion device | |
| CN202978906U (en) | Team smart explanation transmitter | |
| CN106533481A (en) | Head-mounted wireless loudspeaking system | |
| CN217240888U (en) | Wireless live broadcast microphone with lamplight atmosphere | |
| GB2191362A (en) | Loudspeaker | |
| CN107155141B (en) | Sound lamp capable of calibrating sound effect, sound effect calibration method and sound effect calibration system | |
| CN221768307U (en) | Bluetooth WiFi long-distance pickup control system | |
| CN219068415U (en) | Light control system and light performance system | |
| CN210518756U (en) | Wireless microphone through external power supply | |
| CN208783080U (en) | A kind of sound field of loudspeaker loudness equalization equipment | |
| CN115529518A (en) | Wireless live broadcast microphone with lamplight atmosphere |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |