CN104349247B - A kind of wireless microphone system based on RDS data communications - Google Patents
A kind of wireless microphone system based on RDS data communications Download PDFInfo
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- CN104349247B CN104349247B CN201410588955.3A CN201410588955A CN104349247B CN 104349247 B CN104349247 B CN 104349247B CN 201410588955 A CN201410588955 A CN 201410588955A CN 104349247 B CN104349247 B CN 104349247B
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Abstract
The invention belongs to wireless microphone technical field, refer in particular to a kind of wireless microphone system based on RDS data communications, including wireless transmitter and receiver, the wireless transmitter includes microphone, apparatus for processing audio, microprocessor I, Wave shape changing device, signal mixer unit, pll system module and transmitter；The receiver includes filtering difference frequency device, FM demodulating equipments, microprocessor II, apparatus for processing audio, mute and oise damping means and audio output device.The present invention is realized based on RDS (Radio Data System) technology in FM frequency modulation broadcastings, and its simple mode and is solved the frequency pilot in wireless microphone system solve the multifrequency cross-interference issue for perplexing wireless microphone always；The manufacture cost of this patent is low, and can ensure the wireless transmission quality of audio signal, has high product competitiveness.
Description
Technical field
The invention belongs to wireless microphone technical field, refers in particular to a kind of wireless microphone system based on RDS data communications.
Background technology
Pilot technique is a particularly important technology in wireless microphone；At present, the pilot tone skill of wireless microphone
Art scheme generally simulates two kinds of pilot approach and conventional digital pilot approach, and simulation pilot tone is from can not fundamentally solve nothing
Frequency crosstalk problem in linear system system, although conventional digital pilot approach can solve cross-interference issue, it is launched and receives
Demodulator circuit is complicated, therefore a kind of nor best mode.
The content of the invention
The object of the present invention is to provide one kind can solve frequency pilot, transmit the nothing reliably based on RDS data communications
Line microphone system.
The object of the present invention is achieved like this：
A kind of wireless microphone system based on RDS data communications, including wireless transmitter and receiver, the wireless hair
Emitter includes
Microphone, it is used to receiving the sound source of outside and is converted into audio signal, and microphone is by audio
Signal is transferred to apparatus for processing audio；
Apparatus for processing audio, it is used to handle audio signal, and the audio signal after processing is delivered to signal
Mixing arrangement；
Microprocessor I, it sends control signal to PLL phase-locked loop modules, and, produce a RDS signal to waveform and become
Changing device；
Wave shape changing device, it is used to be modulated to receiving RDS signal, becomes the double-side band tune of 57kHz ± 6Hz
The RDS signal of system；
Signal mixer unit, it is used for the audio signal that will be received and RDS signal is mixed into a kind of mixing letter
Number, and mixed signal is exported to transmitter；
PLL phase-locked loop modules, it sends the high frequency of a high accuracy and high stability according to the control signal received and carries
Ripple is to transmitter；
Transmitter, mixed signal and high-frequency carrier signal loading are integrated by it, and are launched in the form of radio to week
In collarette border；
The receiver includes
Difference frequency device is filtered, is provided with wave filter and differential frequency circuit in it, filtering difference frequency device is to the radio that receives
Signal is handled and obtains a mixing intermediate-freuqncy signal containing audio signal and RDS signal, and by the mixing intermediate-freuqncy signal
Export to FM demodulating equipments；
FM demodulating equipments, it is used to mixing intermediate-freuqncy signal demodulating RDS signal and audio signal, and FM demodulating equipments are by sound
Frequency signal is delivered to apparatus for processing audio, and RDS signal is delivered to microprocessor II；
Microprocessor II, its RDS signal for being used to receive are decoded and obtain one and sent comprising microprocessor I
Control signal high-frequency signal, high-frequency signal is transferred to mute and oise damping means by microprocessor II；
Apparatus for processing audio, its audio signal for being used to receive change into RDS signal, and apparatus for processing audio is by RDS
Signal output is to audio output device；
Mute and oise damping means, its high-frequency signal for being used to receive change into the control signal of qualification, and will
Control signal is transferred to audio output device；
Audio output device, it plays the audio signal received.
The transmitter and filtering difference frequency device are equipped with antenna.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：
The present invention is based on RDS (Radio Data System) technology in FM frequency modulation broadcastings, and its simple mode is real
Now and solves the frequency pilot in wireless microphone system, the signal frequency of RDS is 57kHz ± 6Hz, this frequency point is to audio
Do not influence；
This patent solves the pilot tone and data transmission problems of wireless microphone using RDS technologies, so as to fulfill hand microphone
With the data interaction problem of reception system, solves the multifrequency cross-interference issue for perplexing wireless microphone always；
The manufacture cost of this patent is low, and can ensure the wireless transmission quality of audio signal.
Brief description of the drawings
Fig. 1 is the principle of the present invention block diagram.
Embodiment
With specific embodiment, the invention will be further described below in conjunction with the accompanying drawings：
A kind of wireless microphone system based on RDS data communications, including wireless transmitter and receiver, the wireless hair
Emitter includes
Microphone, it is used to receiving the sound source of outside and is converted into audio signal, and microphone is by audio
Signal is transferred to apparatus for processing audio；
Apparatus for processing audio, it is used to handle audio signal, and the audio signal after processing is delivered to signal
Mixing arrangement；
Microprocessor I, it sends control signal to PLL phase-locked loop modules, and, produce a RDS signal to waveform and become
Changing device；
Wave shape changing device, it is used to be modulated to receiving RDS signal, becomes the double-side band tune of 57kHz ± 6Hz
The RDS signal of system；
Signal mixer unit, it is used for the audio signal that will be received and RDS signal is mixed into a kind of mixing letter
Number, and mixed signal is exported to transmitter；
PLL phase-locked loop modules, it sends the high frequency of a high accuracy and high stability according to the control signal received and carries
Ripple is to transmitter；Part and parcel in PLL phase-locked loop modules is voltage controlled oscillator (VCO), and voltage controlled oscillator (VCO) is so that carry
Wave frequency rate is stablized, strong antijamming capability, and carrier frequency stablizes the high quality for determining wireless transmission；
Transmitter, mixed signal and high-frequency carrier signal loading are integrated by it, and are launched in the form of radio to week
In collarette border；
The receiver includes
Difference frequency device is filtered, is provided with wave filter and differential frequency circuit in it, filtering difference frequency device is to the radio that receives
Signal is handled and obtains a mixing intermediate-freuqncy signal containing audio signal and RDS signal, and by the mixing intermediate-freuqncy signal
Export to FM demodulating equipments；
FM demodulating equipments, it is used to mixing intermediate-freuqncy signal demodulating RDS signal and audio signal, and FM demodulating equipments are by sound
Frequency signal is delivered to apparatus for processing audio, and RDS signal is delivered to microprocessor II；
Microprocessor II, its RDS signal for being used to receive are decoded and obtain one and sent comprising microprocessor I
Control signal high-frequency signal, high-frequency signal is transferred to mute and oise damping means by microprocessor II；
Apparatus for processing audio, its audio signal for being used to receive change into RDS signal, and apparatus for processing audio is by RDS
Signal output is to audio output device；
Mute and oise damping means, its high-frequency signal for being used to receive change into the control signal of qualification, and will
Control signal is transferred to audio output device；Control signal is used for the switch for controlling audio output device, i.e. audio output device
The control of audio suspension control signal whether is exported, thereby realizes the function of digital quantity switch, this is traditional simulation skill
What art can not be realized, digital quantity transmission is also just being the introduction of, can effectively prevent string frequency；
Audio output device, it plays the audio signal received.The transmitter and filtering difference frequency device are equipped with
Antenna.
Should be noted, RDS technologies (radio data system) are quite ripe by the development of decades, therefore, this Shen
Please involved in each module and equipment design parameter and construction be not described in detail, however, the application uses FM frequency modulation technologies, first
RDS technologies are used for wireless microphone system, and its simple mode is realized and solves leading in wireless microphone system
Frequency problem, the signal frequency of RDS is 57kHz ± 6Hz, this frequency point does not influence audio；This patent is solved using RDS technologies
The pilot tone and data transmission problems of wireless microphone, so as to fulfill hand microphone and the data interaction problem of reception system, solve
Perplex the multifrequency cross-interference issue of wireless microphone always；The manufacture cost of this patent is low, and can ensure the nothing of audio signal
Line transmission quality.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, should all be covered by within protection scope of the present invention.
Claims (2)
1. a kind of wireless microphone system based on RDS data communications, including wireless transmitter and receiver, it is characterised in that
The wireless transmitter includes
Microphone, it is used to receiving the sound source of outside and is converted into audio signal, and microphone is by audio signal
It is transferred to apparatus for processing audio；
Apparatus for processing audio, it is used to handle audio signal, and the audio signal after processing is delivered to signal and is mixed
Device；
Microprocessor I, it sends control signal to PLL phase-locked loop modules, and, produce a RDS signal to waveform change and change the outfit
Put；
Wave shape changing device, it is used to be modulated to receiving RDS signal, becomes the double sideband modulation of 57kHz ± 6Hz
RDS signal；
Signal mixer unit, it is used for the audio signal that will be received and RDS signal is mixed into a kind of mixed signal, and
Mixed signal is exported to transmitter；
PLL phase-locked loop modules, it sends the high frequency carrier of a high accuracy and high stability extremely according to the control signal that receives
Transmitter；
Transmitter, mixed signal and high-frequency carrier signal loading are integrated by it, and are launched in the form of radio to ring around
In border；
The receiver includes
Difference frequency device is filtered, is provided with wave filter and differential frequency circuit in it, filtering difference frequency device is to the radio signal that receives
Handled and obtain a mixing intermediate-freuqncy signal containing audio signal and RDS signal, and the mixing intermediate-freuqncy signal is exported
To FM demodulating equipments；
FM demodulating equipments, it is used to mixing intermediate-freuqncy signal demodulating RDS signal and audio signal, and FM demodulating equipments believe audio
Number apparatus for processing audio is delivered to, and RDS signal is delivered to microprocessor II；
Microprocessor II, its RDS signal for being used to receive are decoded and obtain a control sent comprising microprocessor I
High-frequency signal is transferred to mute and oise damping means by the high-frequency signal of signal processed, microprocessor II；
Apparatus for processing audio, its audio signal for being used to receive change into RDS signal, and apparatus for processing audio is by RDS signal
Export to audio output device；
Mute and oise damping means, its high-frequency signal for being used to receive change into the control signal of qualification, and will control
Signal is transferred to audio output device；
Audio output device, it plays the audio signal received.
2. a kind of wireless microphone system based on RDS data communications according to claim 1, it is characterised in that described
Transmitter and filtering difference frequency device are equipped with antenna.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410588955.3A CN104349247B (en) | 2014-10-28 | 2014-10-28 | A kind of wireless microphone system based on RDS data communications |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410588955.3A CN104349247B (en) | 2014-10-28 | 2014-10-28 | A kind of wireless microphone system based on RDS data communications |
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| CN104349247A CN104349247A (en) | 2015-02-11 |
| CN104349247B true CN104349247B (en) | 2018-05-08 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106303818A (en) * | 2015-06-03 | 2017-01-04 | 张炳翔 | A kind of wireless microphone system with motion sensing control function |
| CN106658246B (en) * | 2016-11-23 | 2020-06-30 | 深圳市好兄弟电子有限公司 | Wireless microphone system |
| CN109243414A (en) * | 2018-09-05 | 2019-01-18 | 厦门轻唱科技有限公司 | K sings system, wireless microphone and its signal transmitting apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201750525U (en) * | 2010-07-05 | 2011-02-16 | 恩平市丰禾电子科技有限公司 | FSK numerically-controlled dual-frequency wireless microphone system |
| CN103731767A (en) * | 2013-12-13 | 2014-04-16 | 恩平市上格电子有限公司 | Wireless microphone system based on digital pilot frequency and working method thereof |
| CN204217114U (en) * | 2014-10-28 | 2015-03-18 | 张炳翔 | A kind of wireless microphone system based on RDS data communication |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120093206A1 (en) * | 2010-10-18 | 2012-04-19 | Qualcomm Incorporated | Radio data system monophonic demodulation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201750525U (en) * | 2010-07-05 | 2011-02-16 | 恩平市丰禾电子科技有限公司 | FSK numerically-controlled dual-frequency wireless microphone system |
| CN103731767A (en) * | 2013-12-13 | 2014-04-16 | 恩平市上格电子有限公司 | Wireless microphone system based on digital pilot frequency and working method thereof |
| CN204217114U (en) * | 2014-10-28 | 2015-03-18 | 张炳翔 | A kind of wireless microphone system based on RDS data communication |
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Effective date of registration: 20180316 Address after: No. 268, Jianggan District triumph Road, Hangzhou, Zhejiang Applicant after: Zhang Bingxiang Address before: No. 268, Jianggan District triumph Road, Hangzhou, Zhejiang Applicant before: Zhang Bingxiang Applicant before: Zhang Fan |
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Effective date of registration: 20190530 Address after: 310053 Room 1530, 15/F Gufeng Building, 555 Dongguan Road, Puyan Street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Tongtai Technology Co., Ltd. Address before: 310000 Kaixuan Road 268, Jianggan District, Hangzhou City, Zhejiang Province Patentee before: Zhang Bingxiang |
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