CN204217114U - A kind of wireless microphone system based on RDS data communication - Google Patents
A kind of wireless microphone system based on RDS data communication Download PDFInfo
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- CN204217114U CN204217114U CN201420630268.9U CN201420630268U CN204217114U CN 204217114 U CN204217114 U CN 204217114U CN 201420630268 U CN201420630268 U CN 201420630268U CN 204217114 U CN204217114 U CN 204217114U
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Abstract
The utility model belongs to wireless microphone technical field, refer in particular to a kind of wireless microphone system based on RDS data communication, comprise wireless launcher and receiver, described wireless launcher comprises microphone, apparatus for processing audio, microprocessor I, Wave shape changing device, signal mixer unit, pll system module and transmitter; Described receiver comprises filtering difference frequency device, FM demodulating equipment, microprocessor II, apparatus for processing audio, quiet and oise damping means and audio output device.The utility model is based on RDS (the Radio Data System) technology in FM FM broadcasting, and its simple mode realizes and solves the frequency pilot in wireless microphone system, solves the multifrequency cross-interference issue always perplexing wireless microphone; The low cost of manufacture of this patent, and the wireless transmission quality that can ensure audio signal, have high product competitiveness.
Description
Technical field
The utility model belongs to wireless microphone technical field, refers in particular to a kind of wireless microphone system based on RDS data communication.
Background technology
Pilot technique has been a very important technology in wireless microphone; At present, the pilot technique scheme of wireless microphone is roughly simulation pilot approach and conventional digital pilot approach two kinds, simulation pilot tone is from the frequency crosstalk problem that can not fundamentally solve wireless system, although conventional digital pilot approach can solve cross-interference issue, but its transmitting and receiving demodulator circuit is complicated, therefore neither a kind of best mode.
Summary of the invention
The purpose of this utility model is to provide one can solve frequency pilot, and transmission is reliably based on the wireless microphone system of RDS data communication.
The purpose of this utility model is achieved in that
Based on a wireless microphone system for RDS data communication, comprise wireless launcher and receiver, described wireless launcher comprises
Microphone, it is for accepting outside sound source and being converted into audio signal, and audio signal is passed to apparatus for processing audio by microphone;
Apparatus for processing audio, it is for processing audio signal, and the audio signal after process is delivered to signal mixer unit;
Microprocessor I, it sends and controls signal to PLL phase-locked loop module, and, produce a RDS signal to Wave shape changing device;
Wave shape changing device, it is for modulating receiving RDS signal, become 57 ± 6Hz the RDS signal of double-sideband modulation;
Signal mixer unit, it for the audio signal received and RDS signal are mixed into a kind of mixed signal, and exports mixed signal to transmitter;
PLL phase-locked loop module, it sends the high frequency carrier of a high accuracy and high stability to transmitter according to the control signal received;
Transmitter, mixed signal and high-frequency carrier signal are loaded as one by it, and are emitted in surrounding environment with wireless form;
Described receiver comprises
Filtering difference frequency device, filter and differential frequency circuit is provided with in it, filtering difference frequency device processes the radio signal received and obtains the mixing intermediate-freuqncy signal that contains audio signal and RDS signal, and exports this mixing intermediate-freuqncy signal to FM demodulating equipment;
FM demodulating equipment, it is for demodulating RDS signal and audio signal by mixing intermediate-freuqncy signal, and audio signal is delivered to apparatus for processing audio by FM demodulating equipment, and RDS signal is delivered to microprocessor II;
Microprocessor II, it is for being undertaken decoding by the RDS signal received and obtaining the high-frequency signal that comprises the control signal that microprocessor I sends, and high-frequency signal is passed to quiet and oise damping means by microprocessor II;
Apparatus for processing audio, it is for changing into RDS signal by the audio signal received, and apparatus for processing audio exports RDS signal to audio output device;
Quiet and oise damping means, control signal for the high-frequency signal received is changed into qualified control signal, and is passed to audio output device by it;
Audio output device, it plays the audio signal received.
Described transmitter and filtering difference frequency device are all equipped with antenna.
The utility model gives prominence to compared to existing technology and useful technique effect is:
The utility model is based on RDS (the Radio Data System) technology in FM FM broadcasting, and its simple mode realizes and solves the frequency pilot in wireless microphone system, the signal frequency of RDS is 57KHz ± 6Hz, and this frequency does not affect audio frequency;
This patent adopts RDS technology to solve pilot tone and the data transmission problems of wireless microphone, thus realizes the data interaction problem of hand microphone and receiving system, solves the multifrequency cross-interference issue always perplexing wireless microphone;
The low cost of manufacture of this patent, and the wireless transmission quality that can ensure audio signal, have high product competitiveness.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
The utility model is further described with specific embodiment below in conjunction with accompanying drawing:
Based on a wireless microphone system for RDS data communication, comprise wireless launcher and receiver, described wireless launcher comprises
Microphone, it is for accepting outside sound source and being converted into audio signal, and audio signal is passed to apparatus for processing audio by microphone;
Apparatus for processing audio, it is for processing audio signal, and the audio signal after process is delivered to signal mixer unit;
Microprocessor I, it sends and controls signal to PLL phase-locked loop module, and, produce a RDS signal to Wave shape changing device;
Wave shape changing device, it is for modulating receiving RDS signal, become 57 ± 6Hz the RDS signal of double-sideband modulation;
Signal mixer unit, it for the audio signal received and RDS signal are mixed into a kind of mixed signal, and exports mixed signal to transmitter;
PLL phase-locked loop module, it sends the high frequency carrier of a high accuracy and high stability to transmitter according to the control signal received; Part and parcel in PLL phase-locked loop module is voltage controlled oscillator (VCO), and voltage controlled oscillator (VCO) makes carrier frequency stablize, and antijamming capability is strong, and carrier frequency stablizes the high-quality determining wireless transmission;
Transmitter, mixed signal and high-frequency carrier signal are loaded as one by it, and are emitted in surrounding environment with wireless form;
Described receiver comprises
Filtering difference frequency device, filter and differential frequency circuit is provided with in it, filtering difference frequency device processes the radio signal received and obtains the mixing intermediate-freuqncy signal that contains audio signal and RDS signal, and exports this mixing intermediate-freuqncy signal to FM demodulating equipment;
FM demodulating equipment, it is for demodulating RDS signal and audio signal by mixing intermediate-freuqncy signal, and audio signal is delivered to apparatus for processing audio by FM demodulating equipment, and RDS signal is delivered to microprocessor II;
Microprocessor II, it is for being undertaken decoding by the RDS signal received and obtaining the high-frequency signal that comprises the control signal that microprocessor I sends, and high-frequency signal is passed to quiet and oise damping means by microprocessor II;
Apparatus for processing audio, it is for changing into RDS signal by the audio signal received, and apparatus for processing audio exports RDS signal to audio output device;
Quiet and oise damping means, control signal for the high-frequency signal received is changed into qualified control signal, and is passed to audio output device by it; Control signal is for controlling the switch of audio output device, namely, audio output device whether output audio suspension control signal controls, so just achieve the function of digital quantity switch, this is that traditional analogue technique cannot realize, also be just the introduction of digital quantity transmission, can effectively prevent string frequently;
Audio output device, it plays the audio signal received.Described transmitter and filtering difference frequency device are all equipped with antenna.
It should be noted that, RDS technology (radio data system) is quite ripe through the development of decades, therefore, the each module related in the application and the design parameter of equipment do not describe in detail with structure, but the application adopts FM frequency modulation technology, first RDS technology is used for wireless microphone system, and its simple mode realizes and solves the frequency pilot in wireless microphone system, the signal frequency of RDS is 57KHz ± 6Hz, and this frequency does not affect audio frequency; This patent adopts RDS technology to solve pilot tone and the data transmission problems of wireless microphone, thus realizes the data interaction problem of hand microphone and receiving system, solves the multifrequency cross-interference issue always perplexing wireless microphone; The low cost of manufacture of this patent, and the wireless transmission quality that can ensure audio signal, have high product competitiveness.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection range of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection range of the present utility model.
Claims (2)
1. based on a wireless microphone system for RDS data communication, comprise wireless launcher and receiver, it is characterized in that, described wireless launcher comprises
Microphone, it is for accepting outside sound source and being converted into audio signal, and audio signal is passed to apparatus for processing audio by microphone;
Apparatus for processing audio, it is for processing audio signal, and the audio signal after process is delivered to signal mixer unit;
Microprocessor I, it sends and controls signal to PLL phase-locked loop module, and, produce a RDS signal to Wave shape changing device;
Wave shape changing device, it is for modulating receiving RDS signal, become 57 ± 6Hz the RDS signal of double-sideband modulation;
Signal mixer unit, it for the audio signal received and RDS signal are mixed into a kind of mixed signal, and exports mixed signal to transmitter;
PLL phase-locked loop module, it sends the high frequency carrier of a high accuracy and high stability to transmitter according to the control signal received;
Transmitter, mixed signal and high-frequency carrier signal are loaded as one by it, and are emitted in surrounding environment with wireless form;
Described receiver comprises
Filtering difference frequency device, filter and differential frequency circuit is provided with in it, filtering difference frequency device processes the radio signal received and obtains the mixing intermediate-freuqncy signal that contains audio signal and RDS signal, and exports this mixing intermediate-freuqncy signal to FM demodulating equipment;
FM demodulating equipment, it is for demodulating RDS signal and audio signal by mixing intermediate-freuqncy signal, and audio signal is delivered to apparatus for processing audio by FM demodulating equipment, and RDS signal is delivered to microprocessor II;
Microprocessor II, it is for being undertaken decoding by the RDS signal received and obtaining the high-frequency signal that comprises the control signal that microprocessor I sends, and high-frequency signal is passed to quiet and oise damping means by microprocessor II;
Apparatus for processing audio, it is for changing into RDS signal by the audio signal received, and apparatus for processing audio exports RDS signal to audio output device;
Quiet and oise damping means, control signal for the high-frequency signal received is changed into qualified control signal, and is passed to audio output device by it;
Audio output device, it plays the audio signal received.
2. a kind of wireless microphone system based on RDS data communication according to claim 1, is characterized in that, described transmitter and filtering difference frequency device are all equipped with antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630268.9U CN204217114U (en) | 2014-10-28 | 2014-10-28 | A kind of wireless microphone system based on RDS data communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630268.9U CN204217114U (en) | 2014-10-28 | 2014-10-28 | A kind of wireless microphone system based on RDS data communication |
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| Publication Number | Publication Date |
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| CN204217114U true CN204217114U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420630268.9U Withdrawn - After Issue CN204217114U (en) | 2014-10-28 | 2014-10-28 | A kind of wireless microphone system based on RDS data communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349247A (en) * | 2014-10-28 | 2015-02-11 | 张炳翔 | Wireless microphone system based on RDS (Radio Data System) data communication |
-
2014
- 2014-10-28 CN CN201420630268.9U patent/CN204217114U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104349247A (en) * | 2014-10-28 | 2015-02-11 | 张炳翔 | Wireless microphone system based on RDS (Radio Data System) data communication |
| CN104349247B (en) * | 2014-10-28 | 2018-05-08 | 张炳翔 | A kind of wireless microphone system based on RDS data communications |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150318 Effective date of abandoning: 20180508 |
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| AV01 | Patent right actively abandoned |