CN104581466A - Wireless microphone system capable of automatically adjusting emission power - Google Patents
Wireless microphone system capable of automatically adjusting emission power Download PDFInfo
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- CN104581466A CN104581466A CN201410785299.6A CN201410785299A CN104581466A CN 104581466 A CN104581466 A CN 104581466A CN 201410785299 A CN201410785299 A CN 201410785299A CN 104581466 A CN104581466 A CN 104581466A
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Abstract
The invention discloses a wireless microphone system capable of automatically adjusting the emission power. A voltage detection module detects the power intensity of a microphone signal in real time, and a power adjustment signal is transmitted to a wireless microphone emission circuit through a digital emission circuit and a digital receiving circuit, thus adjusting the output power of a microphone in real time; when the distance between the microphone and a receiver is shortened, the output power of the microphone is reduced; when the distance between the microphone and the receiver is prolonged, the output power of the microphone is enlarged; the wireless microphone system can be used for dynamically adjusting the output power of the microphone in real time, so that the power consumption of the microphone can be effectively reduced, and the service time of the microphone can be prolonged.
Description
Technical field
The present invention relates to a kind of wireless microphone system, particularly a kind of wireless microphone system of automatic adjustment transmitting power.
Background technology
At present, for wireless microphone system, the signal transmission power of microphone is certain, because its transmitting power is certain, therefore when microphone distance is enough near time, and unwanted current strong transmitting power also can meet the requirement of Signal transmissions, and wireless microphone maintain its power consumption in high power situation always can be very serious, the power consumption of microphone is high, service time is short.
Summary of the invention
For solving the problem, the object of the present invention is to provide the wireless microphone system of a kind of low-power consumption, active adjustment transmitting power.
The present invention solves the technical scheme that its problem adopts:
A kind of wireless microphone system of automatic adjustment transmitting power, comprise wireless microphone radiating circuit and wireless microphone receiving circuit, described wireless microphone radiating circuit comprises the audio input end connected successively, FM modulation module, power amplification circuit and audio emission antenna, also comprise MCU module, for the power conditioning circuitry of regulating power amplifying circuit power, digital receive circuit and digital received antenna, described MCU module is connected with FM modulation module and power conditioning circuitry respectively, described power conditioning circuitry is connected with power amplification circuit, described digital received antenna, digital receive circuit, MCU module connects successively, described wireless microphone receiving circuit, comprise the audio frequency reception antenna, FM demodulation module, the audio output that connect successively, also comprise MCU module, for detecting the voltage detection module of received power intensity, digital transmission circuit and digital transmission antenna, described FM demodulation module, voltage detection module, MCU module, digital transmission circuit.Digital transmission antenna connects successively.
Further, described digital receive circuit, digital transmission circuit are made up of Si4431 radio transmitting and receiving chip and peripheral circuit thereof.
The invention has the beneficial effects as follows: the wireless microphone system of a kind of automatic adjustment transmitting power that the present invention adopts, the power being detected microphone signal by voltage detection module is in real time strong and weak, and by digital transmission circuit, power regulating signals transfers in wireless microphone radiating circuit by digital receive circuit, the power output of real-time adjustment microphone, when the distance of microphone and receiver reduces, reduce the power output of microphone, when the distance of microphone and receiver increases, increase the power output of microphone, because the present invention can the power output of dynamic adjustments microphone in real time, can effectively reduce microphone power consumption, extend the service time of microphone.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the invention will be further described.
Fig. 1 is the schematic block circuit diagram of wireless microphone radiating circuit of the present invention;
Fig. 2 is the schematic block circuit diagram of wireless microphone receiving circuit of the present invention.
Embodiment
With reference to Fig. 1-Fig. 2, the wireless microphone system of a kind of automatic adjustment transmitting power of the present invention, comprise wireless microphone radiating circuit and wireless microphone receiving circuit, described wireless microphone radiating circuit comprises the audio input end connected successively, FM modulation module, power amplification circuit and audio emission antenna 1, also comprise MCU module, for the power conditioning circuitry of regulating power amplifying circuit power, digital receive circuit and digital received antenna 3, described MCU module is connected with FM modulation module and power conditioning circuitry respectively, described power conditioning circuitry is connected with power amplification circuit, described digital received antenna 3, digital receive circuit, MCU module connects successively, described wireless microphone receiving circuit, comprise the audio frequency reception antenna 2, FM demodulation module, the audio output that connect successively, also comprise MCU module, for detecting the voltage detection module of received power intensity, digital transmission circuit and digital transmission antenna 4, described FM demodulation module, voltage detection module, MCU module, digital transmission circuit.Digital transmission antenna 4 connects successively.
The audio signal of microphone is successively through audio input end, FM modulation module, power amplification circuit and audio emission antenna 1 are launched in air, audio radio frequency is received by audio frequency reception antenna 2, and demodulate after audio signal through FM demodulation module and export from audio output, voltage detection module detects the voltage strength of audio signal in real time from FM demodulation module, thus learn the power output of wireless microphone radiating circuit, and by power signal transmissions to MCU module, MCU module is by digital transmission circuit, digital transmission antenna 4 is to wireless microphone radiating circuit transmitted power conditioning signal, when voltage detection module detects that voltage exceeds threshold values, power regulating signals is the signal reducing power output, when the voltage that voltage detection module detects is lower than threshold values, power regulating signals is the signal increasing power output, wireless microphone radiating circuit is by digital received antenna 3, digital receive circuit obtains power regulating signals, and control according to power regulating signals the power output that power conditioning circuitry regulates microphone.
The power that the present invention detects microphone signal in real time by voltage detection module is strong and weak, and by digital transmission circuit, digital receive circuit, power regulating signals is transferred in wireless microphone radiating circuit, the power output of real-time adjustment microphone, when the distance of microphone and receiver reduces, reduce the power output of microphone, when the distance of microphone and receiver increases, increase the power output of microphone, because the present invention can the power output of dynamic adjustments microphone in real time, can effectively reduce microphone power consumption, extend the service time of microphone.
Particularly, described digital receive circuit, digital transmission circuit are made up of Si4431 radio transmitting and receiving chip and peripheral circuit thereof.
The above, just preferred embodiment of the present invention, the present invention is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.
Claims (3)
1. one kind regulates the wireless microphone system of transmitting power automatically, it is characterized in that: comprise wireless microphone radiating circuit and wireless microphone receiving circuit, described wireless microphone radiating circuit comprises the audio input end connected successively, FM modulation module, power amplification circuit and audio emission antenna, also comprise MCU module, for the power conditioning circuitry of regulating power amplifying circuit power, digital receive circuit and digital received antenna, described MCU module is connected with FM modulation module and power conditioning circuitry respectively, described power conditioning circuitry is connected with power amplification circuit, described digital received antenna, digital receive circuit, MCU module connects successively, described wireless microphone receiving circuit, comprise the audio frequency reception antenna, FM demodulation module, the audio output that connect successively, also comprise MCU module, for detecting the voltage detection module of received power intensity, digital transmission circuit and digital transmission antenna, described FM demodulation module, voltage detection module, MCU module, digital transmission circuit.
2. digital transmission antenna connects successively.
3. the wireless microphone system of a kind of automatic adjustment transmitting power according to claim 1, is characterized in that: described digital receive circuit, digital transmission circuit are made up of Si4431 radio transmitting and receiving chip and peripheral circuit thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785299.6A CN104581466B (en) | 2014-12-15 | 2014-12-15 | A kind of wireless microphone system for automatically adjusting transmission power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785299.6A CN104581466B (en) | 2014-12-15 | 2014-12-15 | A kind of wireless microphone system for automatically adjusting transmission power |
Publications (2)
| Publication Number | Publication Date |
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| CN104581466A true CN104581466A (en) | 2015-04-29 |
| CN104581466B CN104581466B (en) | 2018-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410785299.6A Active CN104581466B (en) | 2014-12-15 | 2014-12-15 | A kind of wireless microphone system for automatically adjusting transmission power |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107957744A (en) * | 2016-10-14 | 2018-04-24 | 瑞萨电子株式会社 | Semiconductor devices |
| CN117459864A (en) * | 2023-10-25 | 2024-01-26 | 广州市杰泰电子科技有限公司 | Wireless microphone system capable of automatically adjusting transmitting power |
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| CN117459864A (en) * | 2023-10-25 | 2024-01-26 | 广州市杰泰电子科技有限公司 | Wireless microphone system capable of automatically adjusting transmitting power |
| CN117459864B (en) * | 2023-10-25 | 2024-04-05 | 广州市杰泰电子科技有限公司 | Wireless microphone system capable of automatically adjusting transmitting power |
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| Publication number | Publication date |
|---|---|
| CN104581466B (en) | 2018-04-17 |
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