CN103747375B - A method for automatically installing a wireless microphone - Google Patents
A method for automatically installing a wireless microphone Download PDFInfo
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- CN103747375B CN103747375B CN201310734448.1A CN201310734448A CN103747375B CN 103747375 B CN103747375 B CN 103747375B CN 201310734448 A CN201310734448 A CN 201310734448A CN 103747375 B CN103747375 B CN 103747375B
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Abstract
The invention provides a method for automatically installing a wireless microphone. The automatic installing method comprises: dividing every two transmitters into one group and performing circulatory frequency sweep detection on all groups; using a receiver to control every two transmitters to be turned off before frequency sweep, searching all available channels and finding out a plurality of channels with less interference, recording the channels with less interference in a list, and using the channels as initial frequency sweeping channels; in the circulatory detection, if the reception intensity of any signal is over a set value, using the receiver to control a corresponding transmitter to add a channel upwardly and then performing same detection and determination until no interference is detected in the current channel. In the method for automatically installing a wireless microphone, frequency sweep is performed on using environment in advance in order to prevent all wireless microphones required to be automatically adjusted and installed from being automatically installed from a same channel, thereby enhancing installing efficiency.
Description
Technical field
The present invention relates to microphone field is and in particular to the automatic installation method of multiple wireless microphone.
Background technology
In the place being concentrated use in wireless microphone (transmitter), because wireless launcher quantity more (>When 20 sets), serious frequency Inter Modulation can be produced in the receiving terminal of wireless microphone, cause intermodulation distortion and noise, have impact on experience and the mood of user. for preventing intermodulation distortion, higher to the personnel requirement of mounting and adjusting wireless microphone, need good installation thinking and work to test, and need repeatedly to debug the channel to find no intermodulation, waste time and energy.In No. 200910214162.4 applications of China, give a kind of wireless microphone and its jamming-proof method, but the method efficiency is still relatively low, falls flat.
Content of the invention
The problem that the present invention need to solve is to provide a kind of automatic installation method of supporting multiple wireless microphones.
According to the above-mentioned problem that need to solve, the technical scheme that the present invention takes is：
Described wireless microphone includes emitter and receiver, and each emitter has a corresponding receiving channel on the receiver；Described automatic installation method is as follows：
By one group two-by-two of emitter, successively following cycle detection is carried out to each group：
（1）Receiver controls two Transmitter Turn-Offs first, to the whole search of available channel once, and finds out interference several channels less, and these less channels of interference of list records；
（2）Receiver controls the first emitter to disturb less channel individually to open certain time at any one, and period detects the signal receiving strength of the second receiving channel；
（3）Receiver controls the second emitter to disturb less channel individually to open certain time at another, and period detects the signal receiving strength of the first receiving channel；
（4）Receiver controls two emitters to cut out certain time together, and detects the signal receiving strength of first, second receiving channel simultaneously；
（5）Receiver controls two emitters to open certain time together；
Above step（2）Extremely（5）Circulation is carried out, and when the value of any one signal receiving strength detecting exceedes setting value, receiver controls corresponding emitter to do same detection judgement after increasing a channel upwards again, till when current channel can't detect interference；When detecting that certain channel is noiseless, receiver controls emitter continuously to open a period of time in this channel and detect, after waiting other emitters to be detected to be fully completed channel detection adjustment, this channel is still noiseless it is determined that this channel is the working channel of corresponding emitter；If interference is detected, controlling corresponding emitter after increasing a channel upwards, to do same detection again and judging.
Preferably, described certain time is the 2-12 second.
Preferably, described setting value is squelch level during operation of receiver.
Preferably, several channels described are two or more.
With respect to prior art, the beneficial effects of the present invention is：In advance use environment is performed a scan in wireless microphone installation method of the present invention, prevent all wireless microphones wanting adjust automatically to install from all starting automatically to install from same channel, improve installation effectiveness；Set-up time and personnel can be saved in a large number using installation method of the present invention, save installation cost it is ensured that the accuracy of adjustment and reliability.
Specific embodiment
For the ease of the understanding of those skilled in the art, with reference to embodiment, the present invention is described in further detail：
Heretofore described microphone includes multiple emitters（Wireless microphone）And receiver, each emitter has a corresponding receiving channel on the receiver.Described receiver includes microprocessor and the input circuit unit being sequentially connected, mixing unit, demodulating unit, low frequency processing unit and audio output unit etc..Wherein, microprocessor connects mixing unit by voltage-controlled concussion unit, by field intensity detector unit connection demodulating unit.
During work, receiver is sent into input circuit unit after receiving the radiofrequency signal that wireless microphone part sends and is carried out frequency-selective filtering, amplification, it is then fed into mixing unit, it is mixed with the local oscillation frequency signal of voltage-controlled concussion unit output, high-frequency signal is converted to intermediate-freuqncy signal, it is re-fed into demodulating unit and carries out signal amplification and signal demodulation, exported by audio output unit after finally the low frequency signal after demodulation being processed.
When actually used, each receiving channel of receiver also can receive the other signals in environment, these signals equally finally can be exported to audience by output unit through a series of process such as mixing, signal conversion, demodulation, leads to normal audio signal to be interfered, audibility is deteriorated.Especially when multiple microphones use simultaneously, between each microphone, signal is likely to interfere.When emitter is excessive, because the non-linear of front stage circuits penetrated by receiver, interaction mixing can be produced, produce more interference signals.It is thus impossible to calculate interfering frequency with the mode of simple computation, all it is defined by installation during practical operation.
The automatic installation method of described microphone of the present invention is as follows：
By multiple wireless microphones（Emitter）One group two-by-two, for example first group of numbering, second group, the 3rd group ..., then following cycle detection is carried out to each group：
（1）Two Transmitter Turn-Offs first in first group of receiver control, to the whole search of available channel once, and find out less two to three channels of interference, and these less channels of interference of list records；This step can get some pseudo random numbers, prevents all wireless microphones wanting adjust automatically to install from starting automatically to install from same channel, and according to this based on, the adjust automatically starting to organize interior two wireless microphones is installed, and improves installation effectiveness；
（2）The first emitter in first group of receiver control disturbs less channel individually to open the 2-12 second at any one, the signal receiving strength of the second receiving channel in first group of period detection；
（3）The second emitter in first group of receiver control disturbs less channel individually to open the 2-12 second at another, the signal receiving strength of corresponding first receiving channel in period detection group；
（4）Receiver control first group in two emitters close together the 2-12 second, and simultaneously in detection group corresponding first, second receiving channel signal receiving strength；
（5）Receiver controls two emitters to open the 2-12 second together；This step is used for providing Interference Detection to other emitters corresponding receiver receiving channel.
Above step（2）Extremely（5）Circulation is carried out, and when the value of any one signal receiving strength detecting exceedes setting value, receiver controls corresponding emitter to do same detection judgement after increasing a channel upwards again, till when current channel can't detect interference；When detecting that certain channel is noiseless, receiver controls emitter continuously to open a period of time in this channel and detect, after waiting other emitters to be detected to be fully completed channel detection adjustment, this channel is still noiseless it is determined that this channel is the working channel of corresponding emitter；If interference is detected, controlling corresponding emitter after increasing a channel upwards, to do same detection again and judging.Other group cycle detection situations are identical, carry out with first group simultaneously, or turn on into circulation successively, but the time from first group of unlatching organized to last turning on into circulation successively not can exceed that 30 minutes.
In above-described embodiment, the average time of each detection circulation is 28 seconds, has detected whole about 47 minutes 100 channel used times.So detect current channel noiseless when, receiver is general to be set continuously in this channel detection 50 minutes so as to the wireless microphone that he is concentrated use in can complete whole channel detection adjustment.If being all not detected by 50 minutes disturbing, receiver is judged to adjust automatically installation, and receiver exits adjust automatically Installation Modes and points out to complete installation settings.This time, specifically by the time correlation of each two microphone cycle detection, can be arranged as required to.
When being embodied as, described setting value is squelch level during operation of receiver.Squelch level is the operation level reference value for receiver setting, is set at one of program fixed numbers.It is generally acknowledged that it is to be interfered that the signal that receiver receives exceedes during this squelch level in industry, during less than this squelch level being can be with the channel of normal work.When the signal strength of receiver is more than this squelch level, audio output circuit opened by receiver, otherwise, not exports audio signal, this is to ensure that the quality of exports audio signal is the operation level reference value of receiver setting, and when the signal to noise ratio of audio signal declines, receiver can cut out audio output function.
Above example is only the present invention preferably implementation, can not limit the present invention with this, under the premise of not falling off present inventive concept, any equivalent that it is done and minor variations belong to protection scope of the present invention.
Claims (4)
1. wireless microphone automatic installation method, including a kind of wireless microphone it is characterised in that
Described wireless microphone includes emitter and receiver, and each emitter has a corresponding receiving channel on the receiver；
By one group two-by-two of emitter, successively following cycle detection is carried out to each group：
（1）Receiver controls two Transmitter Turn-Offs first, to the whole search of available channel once, and finds out interference several channels less, and these less channels of interference of list records；
（2）Receiver controls the first emitter to disturb less channel individually to open certain time at any one, and period detects the signal receiving strength of the second receiving channel；
（3）Receiver controls the second emitter to disturb less channel individually to open certain time at another, and period detects the signal receiving strength of the first receiving channel；
（4）Receiver controls two emitters to cut out certain time together, and detects the signal receiving strength of first, second receiving channel simultaneously；
（5）Receiver controls two emitters to open certain time together;
Above step（2）Extremely（5）Circulation is carried out, and when the value of any one signal receiving strength detecting exceedes setting value, receiver controls corresponding emitter to do same detection judgement after increasing a channel upwards again, till when current channel can't detect interference；
When detecting that certain channel is noiseless, receiver controls emitter continuously to open a period of time in this channel and detect, after waiting other emitters to be detected to be fully completed channel detection adjustment, this channel is still noiseless it is determined that this channel is the working channel of corresponding emitter；If interference is detected, controlling corresponding emitter after increasing a channel upwards, to do same detection again and judging.
2. wireless microphone automatic installation method according to claim 1 is it is characterised in that described certain time is the 2-12 second.
3. wireless microphone automatic installation method according to claim 1 is it is characterised in that described setting value is squelch level during operation of receiver.
4. wireless microphone automatic installation method according to claim 1 is it is characterised in that several channels described are two or more.
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| CN201310734448.1A CN103747375B (en) | 2013-12-27 | 2013-12-27 | A method for automatically installing a wireless microphone |
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| CN201310734448.1A CN103747375B (en) | 2013-12-27 | 2013-12-27 | A method for automatically installing a wireless microphone |
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| CN103747375A CN103747375A (en) | 2014-04-23 |
| CN103747375B true CN103747375B (en) | 2017-02-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104244147B (en) * | 2014-09-17 | 2017-06-16 | 深圳市好兄弟电子有限公司 | A kind of intelligent scanning method of wireless microphone receiver |
| CN106954109A (en) * | 2017-05-16 | 2017-07-14 | 广州市杰泰电子科技有限公司 | Fully-automatic intelligent microphone system |
| CN110308334B (en) * | 2019-05-31 | 2021-04-13 | 西安空间无线电技术研究所 | Rotating joint standing wave ratio and insertion loss testing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827295A (en) * | 2009-12-23 | 2010-09-08 | 杨志豪 | Wireless microphone and anti-interference method thereof |
| WO2011104420A1 (en) * | 2010-02-26 | 2011-09-01 | Nokia Corporation | Method and apparatus for spectrum sensing |
| CN103262463A (en) * | 2010-12-10 | 2013-08-21 | Toa株式会社 | Wireless microphone system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827295A (en) * | 2009-12-23 | 2010-09-08 | 杨志豪 | Wireless microphone and anti-interference method thereof |
| WO2011104420A1 (en) * | 2010-02-26 | 2011-09-01 | Nokia Corporation | Method and apparatus for spectrum sensing |
| CN103262463A (en) * | 2010-12-10 | 2013-08-21 | Toa株式会社 | Wireless microphone system |
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Effective date of registration: 20160921 Address after: 516121, Huizhou County, Guangdong City, Boluo province Longxi village, the fifth group is located in the post Applicant after: Guangdong Desheng Electronic Co., Ltd. Address before: 516100 Guangdong County of Boluo province Huizhou City Longxi Longqiao road in Guangdong Desheng Electronic Co Ltd Applicant before: Yang Zhihao |
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