CN107205184A - Wireless microphone is to frequency synchronous method - Google Patents
Wireless microphone is to frequency synchronous method Download PDFInfo
- Publication number
- CN107205184A CN107205184A CN201710295107.7A CN201710295107A CN107205184A CN 107205184 A CN107205184 A CN 107205184A CN 201710295107 A CN201710295107 A CN 201710295107A CN 107205184 A CN107205184 A CN 107205184A
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- CN
- China
- Prior art keywords
- receiver
- frequency
- information
- wireless microphone
- emitter
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- 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.)
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Classifications
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- 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
-
- 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
-
- 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
- H04R2420/01—Input selection or mixing for amplifiers or 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
- H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
Abstract
The present invention relates to microphone field, more particularly to wireless microphone the described method comprises the following steps to frequency synchronous method：Emitter makes information by sending number by broadcast channel, and receiver makes information whether the continuous listening broadcast channel of reception state is connected to number；Emitter waits return data, and the number that receiver verification is received makes information；Receiver sends back information to emitter；Emitter receives back information and sends confirmation to receiver；Receiver receives confirmation and verified, and whether succeed synchronous to frequency judged according to check results.The wireless microphone can automatically select microphone works frequency range to frequency synchronous method, without artificial frequency-selecting, and start can search for networking automatically, and automatic distribution high-quality channel is used, and be inherently eliminated disconnected frequency, string frequency phenomenon.
Description
【Technical field】
The present invention relates to microphone field, more particularly to wireless microphone is to frequency synchronous method.
【Background technology】
Wireless microphone is widely used in KTV places, stage Karaoke, stadium and school, theater at home at present
All kinds of performing actives held Deng place or concert, as the communication technology is more and more flourishing, Radio Resource seems more crowded,
The factors such as frequency, disconnected frequency, radio signal interference, stability difference are altered, make wireless microphone need innovation to expire in prior art
Foot and the demand for meeting current user.
Wireless microphone current main-stream technology has：Received using PLL technology, diversity type reception technique, 2.4G less radio-frequencies
Technology etc..PLL technology can any switching laws working channel, transmitting channel and receive channel any combination, it is to avoid interference have very big
Flexibility, the extensive use in new old product, the also interference of unavoidable numerous outer signals in actual verification；Diversity type connects
Receipts technology is to employ dual collector, and single transmitter sends signal, and receiving signal more by force in each instantaneous selection is used as output
Signal, improves reception more satisfactory；2.4G wireless radio-frequencies employ digital technology, and are equipped with frequency modulation technology sum
According to encryption, stability is strong, and using special data channel, the possibility of similar frequency range is substantially reduced, and reduces each other dry
Disturb, but be due to that 2.4G wireless bandwidths are certain, with continuing on for fixed-bandwidth, the tonequality that microphone is opened is by under
Drop, while when user moves, can occur lost data packets, delay phenomenon significantly.
And no matter wireless speech transmission being carried out using any mode, the selection of frequency still needs manual setting true
It is fixed, and need workmen to possess certain less radio-frequency professional knowledge, to ensure that many microphone small ranges work simultaneously
Interference phenomenon occurs for Shi Buhui.
【The content of the invention】
In order to overcome above mentioned problem, the present invention proposes that a kind of full-automatic frequency-selecting, the wireless wireless microphone to frequency are same to frequency
One step process.
The present invention solve above-mentioned technical problem provide a kind of technical scheme be：There is provided a kind of wireless microphone synchronous to frequency
Method, comprises the following steps：
S1：Emitter makes information by sending number by broadcast channel, and receiver is in the continuous listening broadcast letter of reception state
Whether road is connected to number and makes information；
S2：Emitter waits return data, and the number that receiver verification is received makes information；
S3：Receiver sends back information to emitter；
S4：Emitter receives back information and sends confirmation to receiver；
S5：Receiver receives confirmation and verified, and whether succeed synchronous to frequency judged according to check results.
Preferably, the number makes information include the id information of emitter itself.
Preferably, the back information emitter id information and receiver id information.
Preferably, the confirmation includes receiver id information.
Preferably, step is also included before the step S1：S10：Automatic network-building between receiver.
Preferably, automatic network-building comprises the following steps between the receiver：
S11：It is new to add receiver initialization, divide sending time slots using carrier sense TDMA；
S12：The new receiver that adds chooses the transmission time of time slot determination next time；
S13：The new receiver that adds sends networking application；
S14：Receiver in system receives the networking application of the receiver added in advance, and examines whether networking application has
Effect；
S15：If effectively, receiving the receiver added in advance to network, and the id information in networking application is put in storage；
S16：After networking success, the new receiver that adds switches to reception state.
Preferably, it can also comprise the following steps after step S16：
S17：After networking success, detect whether the receiver newly added conflicts with current channel；
S18：If so, then selecting channel, and switching channels again according to least interference principle.
Preferably, the emitter uses the frequency hopping protocol based on time division multiple acess.
Preferably, the receiver uses carrier sense time division multiple access protocol.
Compared with prior art, the microphone system can automatically select microphone works frequency range, using with avoiding
With the time division multiple acess access communications agreement for solving communication contention aware ability, without artificial frequency-selecting, start can search for networking automatically, from
Dynamic distribution high-quality channel is used, and is inherently eliminated disconnected frequency, string frequency phenomenon.Passage is made to carry out additionally by single number automatic same
Step simplifies mode of operation, it is only necessary to which simple operations wireless microphone is that can be achieved, the receiver without complex operation to frequency.
【Brief description of the drawings】
Fig. 1 is the modular structure schematic diagram of microphone system；
Fig. 2 is the transmission flow of microphone system automatic network-building；
Fig. 3 is the reception flow of microphone system automatic network-building；
Fig. 4 is microphone system automatic frequency aligning synchronized transmissions end flow；
Fig. 5 is the synchronous receiving terminal flow of microphone system automatic frequency aligning.
【Embodiment】
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and embodiment,
The present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used for explaining the present invention, and
It is not used in the restriction present invention.
It is to be appreciated that institute is directional in the embodiment of the present invention indicates that (such as up, down, left, right, before and after ...) is only limited
In the relative position in given view, rather than absolute position.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
Referring to Fig. 1, a kind of microphone system 100, including some receivers 10 and some wireless microphones 20, the nothing
Line microphone 20 is communicated and is connected respectively with the receiver 10 by two different frequency ranges, and the wireless microphone 20 is built-in with language
Sound emitter 21 and with step number information transceiver 23 made to frequency, the receiver 10 includes speech receiver 11 and frequency-selecting number order letter
Cease transceiver 13.The voice transmitter 21 and the speech receiver 11 are described to the same step number of frequency by wireless communication connection
Make information transceiver 23 and the frequency-selecting number make information transceiver 13 by wireless communication connection and with the voice transmitter 21
Different from the communications band of the speech receiver 11, the frequency-selecting number can realize channel radio between making information transceiver 13
Letter, and communications band makes information transceiver 23 make the communication of information transceiver 13 frequently with the frequency-selecting number frequency with described with step number
Duan Xiangtong.
The voice transmitter 21 include one the oneth MCU single-chip microcomputers, and by the first MCU single-chip microcomputers with it is described to frequency
Make information transceiver 23 communicate to connect with step number, realize the management between different phonetic emitter 21.
Specifically, it is described to make information transceiver 23 using the frequency hopping protocol based on time division multiple acess to the nothing with step number frequency
Line microphone 20 is managed, and controls whether each voice transmitter 21 carries out telephone operation.
The voice transmitter 21 picks up microphone voice input signal, is launched after carrying out digital modulation by UHF antennas
Voice messaging.
The speech receiver 11 includes one the 2nd MCU single-chip microcomputers, and passes through the 2nd MCU single-chip microcomputers and the frequency-selecting
Number makes information transceiver 13 communicate, for example, the 2nd MCU single-chip microcomputers make information transceiver 13 be electrically connected with the frequency-selecting number, enters
And realized and communicated by the conduction of electric signal, so as to realize the transmitting and reception of wireless data.
The speech receiver 11 includes several phonetic incepting passages, and reception antenna receives electromagnetic wave signal, through numeral
Signal demodulation, Speech processing, amplification, output voice signal.
The frequency-selecting number uses carrier sense time division multiple acess (CSTDMA) communication protocol, application between making information transceiver 13
High rate data transmission number makes information, realizes that the frequency-selecting number of not chummery in place makes automatic network-building between information transceiver 13, in real time
Equipment communication channel resource, automatic distribution high-quality channel are used in monitoring network, it is ensured that all receiving devices are operated in excellent in net
Matter channel.
The wireless microphone 20 includes making information transceiver 23 with step number to frequency, described to make information transmit-receive with step number to frequency
Machine 23 uses the frequency hopping protocol based on time division multiple acess, and the receiver 10 makes information transceiver 13, the frequency-selecting including frequency-selecting number
Number makes information transceiver 13 use carrier sense time division multiple acess (CSTDMA) communication protocol, described to make information receive with step number frequency
During the carrier sense that the frequency hopping protocol based on time division multiple acess that hair machine 23 is used makes information transceiver 13 use with the frequency-selecting number
Divide multiple access (CSTDMA) communication protocol to be engaged and realize automatic frequency aligning synchronizing function.The frequency-selecting number makes information transceiver simultaneously
13 carrier sense time division multiple acess (CSTDMA) communication protocols used, realize automatic network-building, it is to avoid communication contention aware, realize
Select frequency automatically, without artificial frequency-selecting, it is ensured that all voice transmitters are operated in the channel bands of high-quality.
The method synchronous to frequency is carried out using above-mentioned microphone system to comprise the following steps：
S1：Emitter makes information by sending number by broadcast channel, and receiver is in the continuous listening broadcast letter of reception state
Whether road is connected to number and makes information；
S2：Emitter waits return data, and the number that receiver verification is received makes information；
S3：Receiver sends back information to emitter
S4：Emitter receives back information and sends confirmation to receiver；
S5：Receiver receives confirmation and verified, and whether succeed synchronous to frequency judged according to check results.
Also referring to Fig. 2 and Fig. 3, automatic frequency aligning synchronization flow is made by the wireless microphone 20 to frequency with step number to be believed
The frequency-selecting number of breath transceiver 23 and the receiver 10 makes the completion jointly of information transceiver 13.
Wireless microphone 20 sends number by broadcast channel and makes information, and the number makes information contain wireless microphone 20 certainly
The id information of body, sends after broadcast in dedicated channel wait return data, if receiving return data, sends successfully, no
Failure is then sent, it is necessary to resend broadcast；Return data is received in dedicated channel, receiving return data needs to be verified,
To be confirmed whether correct back information, verification is verified that correct back information contains wireless wheat by self-ID information
Gram wind self-ID information, then verified by the id information of wireless microphone itself, if data check does not pass through, continue etc.
Return data is treated, until waiting scheduled time t1, if not receiving return data yet after scheduled time t1, is resend wide
Broadcast；After data check is correct, confirm as containing the id information of receiver in correct back information, back information, and will return
The receiver id information for passing information is taken out to the transmission confirmation of receiver 10, finally judges whether to send successfully, if so, then sending out
Jet journey terminates, if not determined yet in preset time t2, judges to send time-out, resends broadcast.
Receiver 10 is in reception state in original state, and frequency-selecting number makes the continuous listening broadcast channel of information transceiver 13 be
The no number that is connected to makes information, if receiving number makes information, number, which makes, includes wireless microphone id information in information, then by wireless microphone
The id information that id information takes out together with receiver itself sends back information by dedicated channel to wireless microphone 20, predetermined
Determine whether to return successfully in time t3, if receiving the confirmation of wireless microphone transmission in scheduled time t3, send out
Send in success, scheduled time t3 and be not affected by confirmation, then to frequency synchronization failure, wait receiver to resend number and make information
Again it is synchronous to frequency；Receive after the confirmation of wireless microphone 20, it is necessary to be verified to the confirmation being subject to, if school
Test incorrect, then continue waiting for confirmation, correctly, then to the same the end of the step of frequency.
Above-mentioned synchronizing process wireless microphone 20 and receiver 10 have passed through three-way handshake, and wireless microphone 20 will be wireless
Microphone id information is sent to receiver 10, and receiver 10 returns to wireless microphone id information and receiver id information wirelessly
Microphone 20, then wireless microphone 20 is again by the ID information backs of receiver to receiver 10, it is ensured that reliable synchronization.
The emitter makes information by sending number by broadcast channel, and receiver is in the continuous listening broadcast letter of reception state
Whether road, which is connected to number and makes, also includes step before information：S10：Automatic network-building between receiver.
Automatic network-building comprises the following steps between the receiver：
S11：It is new to add receiver initialization, divide sending time slots using carrier sense TDMA；
S12：The new receiver that adds chooses the transmission time of time slot determination next time；
S13：The new receiver that adds sends networking application；
S14：Receiver in system receives the networking application of the receiver added in advance, and examines whether networking application has
Effect；
S15：If effectively, receiving the receiver added in advance to network, and the id information in networking application is put in storage；
S16：After networking success, the new receiver that adds switches to reception state.
Optimal frequency range is automatically selected in order to realize, can also be comprised the following steps after step S16：
S17：After networking success, detect whether the receiver newly added conflicts with current channel；
S18：If so, then selecting channel, and switching channels again according to least interference principle.
Automatic network-building process includes transmission flow and receives flow, and the transmission flow is as follows：Added when new in systems
During one receiver, initialized first, divide sending time slots using carrier sense TDMA, it is ensured that each equipment
Window is once sent within a transmission cycle, each window that sends includes 5 send opportunity.Then choose under time slot determination
Whether after transmission time once, transmission time to be achieved, just be ready for sending before networking application, transmission needs first to judge current device
In the RSSI of reception signaling and channel, (Received Signal Strength Indication, the signal intensity of reception refers to
Show) whether higher level is in, if the receiver added in advance is in another system, and data are being received, or currently
The RSSI of channel is in reduced levels, then delay waits send opportunity next time, until once sending 5 send opportunity of window
Exhaust, can not also complete to send networking application if 5 send opportunity are finished, wait the transmission window of next time slot.
If current device is not receiving signaling and the RSSI of channel is higher, equipment sends networking application.When sending networking application
The machine id information is sent to existing microphone system, application adds network, after networking application is sent, by the choosing of receiver
Frequency makes information transceiver switch to reception state, you can carry out reception flow.
The reception flow is as follows：Receiver in system receives the networking application of the receiver added in advance, and examines
Whether effective networking application is tested, if effectively, receiving the receiver added in advance and networking, and the id information in networking application is entered
Storehouse, after networking, detects whether the receiver newly added conflicts with current channel, if so, then being selected again according to least interference principle
Determine channel, and switching channels.
Compared with prior art, the wireless microphone frequency synchronous method can be automatically selected microphone works frequency range,
Using with the time division multiple acess access communications agreement for avoiding and solving communication contention aware ability, without artificial frequency-selecting, start can be certainly
Dynamic search networking, automatic distribution high-quality channel is used, and is inherently eliminated disconnected frequency, string frequency phenomenon.Made additionally by single number
Passage carries out automatic synchronization to frequency, simplifies mode of operation, it is only necessary to which simple operations wireless microphone is that can be achieved, without operation
Complicated receiver.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the scope of the invention, it is every at this
Any modification made within the design of invention, equivalent substitution and improvement etc. should be included in the scope of patent protection of the present invention
It is interior.
Claims (9)
1. a kind of wireless microphone is to frequency synchronous method, it is characterised in that comprise the following steps：
S1：Emitter makes information by sending number by broadcast channel, and receiver is in the continuous listening broadcast channel of reception state
The no number that is connected to makes information；
S2：Emitter waits return data, and the number that receiver verification is received makes information；
S3：Receiver sends back information to emitter；
S4：Emitter receives back information and sends confirmation to receiver；
S5：Receiver receives confirmation and verified, and whether succeed synchronous to frequency judged according to check results.
2. wireless microphone as claimed in claim 1 is to frequency synchronous method, it is characterised in that the number makes information include transmitting
The id information of machine itself.
3. wireless microphone as claimed in claim 2 is to frequency synchronous method, it is characterised in that the back information emitter ID
Information and receiver id information.
4. wireless microphone as claimed in claim 2 is to frequency synchronous method, it is characterised in that the confirmation includes receiving
Machine id information.
5. wireless microphone as claimed in claim 1 is to frequency synchronous method, it is characterised in that also include before the step S1
Step：S10：Automatic network-building between receiver.
6. wireless microphone as claimed in claim 4 is to frequency synchronous method, it is characterised in that automatic group between the receiver
Net comprises the following steps：
S11：It is new to add receiver initialization, divide sending time slots using carrier sense TDMA；
S12：The new receiver that adds chooses the transmission time of time slot determination next time；
S13：The new receiver that adds sends networking application；
S14：Whether the receiver in system receives the networking application of the receiver added in advance, and examine networking application effective；
S15：If effectively, receiving the receiver added in advance to network, and the id information in networking application is put in storage；
S16：After networking success, the new receiver that adds switches to reception state.
7. wireless microphone as claimed in claim 5 is to frequency synchronous method, it is characterised in that can also include after step S16
Following steps：
S17：After networking success, detect whether the receiver newly added conflicts with current channel；
S18：If so, then selecting channel, and switching channels again according to least interference principle.
8. wireless microphone as claimed in claim 1 is to frequency synchronous method, it is characterised in that when the emitter is using being based on
Divide the frequency hopping protocol of multiple access.
9. wireless microphone as claimed in claim 1 is to frequency synchronous method, it is characterised in that the receiver is supervised using carrier wave
Listen time division multiple access protocol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295107.7A CN107205184A (en) | 2017-04-28 | 2017-04-28 | Wireless microphone is to frequency synchronous method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710295107.7A CN107205184A (en) | 2017-04-28 | 2017-04-28 | Wireless microphone is to frequency synchronous method |
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| CN107205184A true CN107205184A (en) | 2017-09-26 |
Family
ID=59905961
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| CN201710295107.7A Pending CN107205184A (en) | 2017-04-28 | 2017-04-28 | Wireless microphone is to frequency synchronous method |
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Cited By (6)
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| CN108540170A (en) * | 2018-03-14 | 2018-09-14 | 思翼科技（深圳）有限公司 | A kind of SHTT frequency hopping data radio station systems applied to telecontrolled model |
| CN109697840A (en) * | 2018-12-28 | 2019-04-30 | 东莞亿动智能科技有限公司 | Automatic frequency aligning method and device |
| CN111770590A (en) * | 2020-07-14 | 2020-10-13 | 昆腾微电子股份有限公司 | Microphone pairing method and sound system |
| CN112752196A (en) * | 2020-12-29 | 2021-05-04 | 昆腾微电子股份有限公司 | Frequency alignment method, device and system based on microphone system |
| CN113965855A (en) * | 2020-12-01 | 2022-01-21 | 恩平市亿歌电子有限公司 | Wireless microphone dynamic networking frequency alignment method and system |
| WO2023070304A1 (en) * | 2021-10-26 | 2023-05-04 | 深圳市大疆创新科技有限公司 | Audio collection system, frequency matching method, charging case and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540170A (en) * | 2018-03-14 | 2018-09-14 | 思翼科技（深圳）有限公司 | A kind of SHTT frequency hopping data radio station systems applied to telecontrolled model |
| CN109697840A (en) * | 2018-12-28 | 2019-04-30 | 东莞亿动智能科技有限公司 | Automatic frequency aligning method and device |
| CN111770590A (en) * | 2020-07-14 | 2020-10-13 | 昆腾微电子股份有限公司 | Microphone pairing method and sound system |
| CN111770590B (en) * | 2020-07-14 | 2022-04-19 | 昆腾微电子股份有限公司 | Microphone pairing method and sound system |
| CN113965855A (en) * | 2020-12-01 | 2022-01-21 | 恩平市亿歌电子有限公司 | Wireless microphone dynamic networking frequency alignment method and system |
| CN112752196A (en) * | 2020-12-29 | 2021-05-04 | 昆腾微电子股份有限公司 | Frequency alignment method, device and system based on microphone system |
| CN112752196B (en) * | 2020-12-29 | 2022-07-08 | 昆腾微电子股份有限公司 | Frequency alignment method, device and system based on microphone system |
| WO2023070304A1 (en) * | 2021-10-26 | 2023-05-04 | 深圳市大疆创新科技有限公司 | Audio collection system, frequency matching method, charging case and storage medium |
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Application publication date: 20170926 |