CN102036138B - Wireless microphone system and automatic installing and debugging method thereof - Google Patents
Wireless microphone system and automatic installing and debugging method thereof Download PDFInfo
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- CN102036138B CN102036138B CN201010598410.2A CN201010598410A CN102036138B CN 102036138 B CN102036138 B CN 102036138B CN 201010598410 A CN201010598410 A CN 201010598410A CN 102036138 B CN102036138 B CN 102036138B
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Abstract
The invention discloses a wireless microphone system which is used for karaoke television (KTV) places. The wireless microphone system comprises a microphone unit and a receiving unit, wherein the receiving unit comprises an input circuit, a frequency mixing and converting circuit, a demodulation circuit, a microprocessor, a universal serial bus (USB) interface circuit and the like, wherein the input circuit, the frequency mixing and converting circuit and the demodulation circuit are connected in turn; the USB interface circuit is connected with the microprocessor; the demodulation circuit is connected with the microprocessor through an interference signal detection circuit; the microphone unit comprises a microprocessor, and a sound pick-up device, an audio processing circuit and the like which are connected in turn; and the microprocessor is also connected with the USB interface circuit and a power control circuit. The interference signal detection circuit and a data transmission circuit are arranged in the receiving unit of the wireless microphone system and matched with a data receiving circuit in the microphone unit for use; and by an automatic installing and debugging method, a plurality of microphones can be conveniently installed and debugged at the same time, the debugging efficiency is high, and the service performance after the debugging is stable.
Description
Technical field
The present invention relates to microphone field, be specifically related to a kind of wireless microphone system and the Auto-mounting adjustment method thereof that are applied to KTV place.
Background technology
Wireless microphone uses radio carrier transmission signal, and the constraint not by audio frequency electric wire during use is flexible and convenient to use, is therefore widely used in the public places of entertainment such as karaoke chamber.Because karaoke chamber quantity is intensive, and spacing between each room is little, the quantity that wireless microphone uses is many, therefore, if the wireless microphone being installed on each room just uses without tight debugging, test, there will be frequency inter-modulation interference, and cause the mutual crosstalk of the microphone in each room, impact is normal to be used, and affects to business management.Therefore, when wireless microphone is installed, must the disturbance state in each room of test progressively, the constantly operating frequency of adjustment microphone, there will not be mutual interference until all open when using.Therefore, when traditional wireless microphone is used for the installation of KTV engineering multiple stage, must by experienced technical staff's Installation and Debugging, and generally need more than 3 people to observe mutually the wireless microphone state assist in debugging in each room, not only consuming time but also take manpower, this has become the important technology obstacle that wireless microphone is promoted to karaoke chamber, becomes an industry technology difficult problem.
Summary of the invention
The problem that the present invention need solve is to provide a kind of wireless microphone system and Auto-mounting adjustment method thereof of applicable KTV place.
For solving the problem, the technical scheme that the present invention takes is: provide a kind of wireless microphone system for KTV place, comprise microphone unit and receiving element, described receiving element comprises the input circuit, mixing frequency changer circuit, demodulator circuit, low frequency treatment circuit and the audio output circuit that connect successively, described input circuit is connected with reception antenna, it is characterized in that the usb circuit also comprising microprocessor and be connected with microprocessor, this microprocessor is connected with low frequency treatment circuit, and connects mixing frequency changer circuit by voltage-controlled oscillating circuit; Described demodulator circuit connects microprocessor by interferer signal detection circuit.
Described microphone unit comprises microprocessor and the pick-up connected successively, audio frequency processing circuit, signal modulation circuit, carrier wave amplifying circuit, described carrier wave amplifying circuit is connected with transmitting antenna, microprocessor is connected by frequency oscillation circuit and signal modulation circuit, and microprocessor is also connected with usb circuit and power control circuit.
Concrete, described interferer signal detection circuit comprises comparator IC2A, and its inverting input accesses reference voltage by adjustable resistance VR1, the signal RSSI that the receiving element of in-phase input end access after mixing demodulation receives, and output RSSI OUT connects governor circuit
Preferably, receiving element is also provided with the key circuit switched for mode of operation, and this key circuit is connected with microprocessor.
The present invention also provides the Auto-mounting adjustment method of above-mentioned wireless microphone system, the steps include:
(1) adopt data wire to be connected with the USB interface of microphone unit by above-mentioned wireless microphone receiving element, and the two operating frequency is adjusted to unanimously, signal can be transmitted and received normally;
(2) control microphone unit power-off by receiving element, whether can receive signal by receiving element and then whether have interference under judging this frequency; If any interference, receiving element changes operating frequency and to control microphone unit consistent with its holding frequency; Step (3) is entered as noiseless;
(3) microphone unit adopts the frequency operation determined in step (2), controls the intermittent open and close of microphone unit power supply, whether can receive signal and then whether have interference under judging this frequency by receiving element by receiving element;
(4) as receiving element detects interference signal, then change frequency and control microphone unit consistent with receiving element frequency after, repeat the Interference Detection that step (3) continues circulation, until through the regular hour or after detecting number of times, do not have interference signal to occur, receiving element will be judged as that debugging completes, and be completed by display instruction automatic Debugging, after roomed receiving element all completes automatic Debugging, microphone system just can normally come into operation.
Hinge structure of the present invention has following remarkable advantage: establish interferer signal detection circuit and data radiating circuit in the receiving element of described wireless microphone system, the data receiver circuit in microphone unit is coordinated to use, conveniently can realize the Installation and Debugging together of multiple microphone, debugging efficiency is high, and after debugging, serviceability is stablized; Described method relies on hardware setting, and complete multiple microphones Installation and Debugging process together, debugging efficiency is high.
Accompanying drawing explanation
Fig. 1 is receiving element circuit block diagram of the present invention;
Fig. 2 is microphone unit circuit block diagram of the present invention;
Fig. 3 is interferer signal detection circuit theory schematic diagram in receiving element electricity of the present invention.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in further detail.
Disclosed wireless microphone system comprises microphone unit and receiving element.
As shown in Figure 1, wherein, receiving element comprises the input circuit, mixing frequency changer circuit, demodulator circuit, low frequency treatment circuit and the audio output circuit that connect successively, described input circuit is connected with reception antenna, the usb circuit, key circuit, display driver circuit and the display screen that also comprise microprocessor and be connected with microprocessor, this microprocessor is connected with low frequency treatment circuit, and connects mixting circuit by voltage-controlled oscillating circuit; Described demodulator circuit connects microprocessor by interferer signal detection circuit.
As shown in Figure 2, wherein, microphone unit comprises microprocessor and the pick-up connected successively, audio frequency processing circuit, signal modulation circuit, carrier wave amplifying circuit, described carrier wave amplifying circuit is connected with transmitting antenna, microprocessor is connected by frequency oscillation circuit and signal modulation circuit, and microprocessor is also connected with usb circuit.
As Fig. 3, in receiving element circuit, interferer signal detection circuit adopts high speed operation amplifier to form high-precision voltage comparator circuit, signal high field RSSI voltage is inputted by the in-phase input end of amplifier IC2A, the inverting input input reference of amplifier IC2A, the reference voltage of this fiducial value by regulating VR1 potentiometer can set different brackets, for use in the accurate identification to interference signal.
The method of wireless microphone system Auto-mounting debugging of the present invention is as follows:
To install the present invention in 40 rooms simultaneously, first, by 40 covers, microphone system is supporting is respectively positioned over each room, and open the mains switch of microphone unit and receiving element, connect the usb data port of microphone unit and receiving element with data wire, make supporting microphone unit and receiving element carry out data communication.
Then microphone unit is adjusted to consistent with the operating frequency of receiving element, signal can be transmitted and received normally.Notice that the set of frequency of each room microphone can not be identical, to reduce the time that automatic Debugging is installed.
The automatic Debugging first step: the microphone system for one of them room: first, the microprocessor of receiving element sends by usb circuit the instruction that controls microphone unit powered-down, the microprocessor of microphone unit is delivered to by data wire, microphone unit power-off is controlled by power control circuit by the microprocessor of microphone unit, now, receiving element answers no signal to receive, the microprocessor of its interferer signal detection circuit state no interference signal feeding self, then its microprocessor judges is that the operating frequency of current receiving element can not be subject to outside (other room microphone unit) interference, therefore, the receiving element in this room will lock with this frequency operation.
Then send by receiving element microprocessor the instruction that controls microphone unit tactile switch power supply, the microprocessor of microphone unit is delivered to by data wire, control microphone unit power supply tactile switch by the microprocessor of microphone unit by power control circuit, both ceaselessly alternately open or close power supply at a certain time interval.Its objective is, the carrier signal making it launch also is in batch (-type) emission state, and wherein, transmitting of microphone unit, the receiving element for other room detects disturbance state.When powered-down does not transmit, the receiving element for this room detects the interference signal whether had from other room.
When microphone unit is in power-on state, receiving element for other room detects disturbance state, and although the receiving element in this room also have received the signal launched from microphone unit simultaneously, but be not considered as interference signal, because receiving element microprocessor is while control microphone unit is opened, the detection also temporarily eliminating interference judges.
When microphone unit is in powered-down state, be that carrier-less signal is launched, now, its receiving element answers no signal to receive, thus microprocessor judges receives normally noiseless, as receiving element now receives signal, interferer signal detection unit will output signal to microprocessor unit, microprocessor unit will be considered as there is interference, thus control receiving element frequency phase lock ring, voltage-controlled oscillator (VCO) unit, change into another one frequency operation, and whether the new operating frequency of continuation detection exists interference, as noiseless, receiving element microprocessor will send a frequency synchronization signal, the microprocessor of microphone unit is delivered to by data wire, frequency is changed by microphone unit Microprocessor S3C44B0X frequency oscillating unit, make it consistent with the operating frequency of receiving element, then, receiving element continues the instruction sending tactile switch microphone unit power supply, for continuous cycle detection disturbance state.
The above is for one of them room, the automatic Debugging operation principle of wireless microphone system is described, the method of work of the wireless microphone system in other room and principle are duplicate, both be in continuous cycle detection disturbance state always, and receiving element is once the existence of interference be detected, a new frequency will be changed, continue the Interference Detection of repetitive cycling, until through the regular hour or after detecting number of times, do not occur disturb, receiving element microprocessor will be judged as that debugging completes, and by display or indicator light, instruction automatic Debugging completes, after roomed receiving element all completes automatic Debugging, microphone system just can normally come into operation.
In order to improve the functional reliability of wireless microphone system, receiving element can arrange Auto-mounting pattern and using forestland change over switch, when needs automatic Debugging is installed, switch is placed in Auto-mounting pattern, after installation is complete, receiving element automatically switches to using forestland; Under using forestland, receiving element closes interference check function, to avoid receiving element error detection in use procedure.
During concrete enforcement, the mode that microphone unit is connected with data wire with the data syn-chronization of receiving element realizes, data wire can be directly connected to the FPDP on microphone unit, also data wire can be connected to transmitting cradle, microphone unit inserts in cradle, realize data cube computation, can charge for microphone unit simultaneously.
Under using forestland, after microphone unit is connected with data wire with receiving element, Frequency Synchronization can be carried out, both the frequency of microphone unit and the consistent of receiving element, the advantage of this function is, the microphone unit when this room damages, after being replaced by other room or new microphone unit, as long as connect once by data wire, can be just consistent with receiving element frequency by the Frequency Synchronization of microphone unit.
The mode that transmitter unit in the present embodiment communicates with receiving element is wire transmission mode, also can be infrared ray or wireless RF transmission mode.
The application of this technology, by promotion KTV show business to the positive use of wireless microphone, plays very important effect to China even development of whole world wireless microphone industry.
For the concrete circuit introduced is ripe circuit in prior art in the present invention, do not repeat them here.
Above embodiment is only the present invention's preferably implementation, can not limit the present invention with this, is not coming off under concept thereof of the present invention, and any equivalent replacement do it and minor variations all belong to protection scope of the present invention.
Claims (2)
1.
wireless microphone system, comprise microphone unit and receiving element, described receiving element comprises the input circuit, mixing frequency changer circuit, demodulator circuit, low frequency treatment circuit and the audio output circuit that connect successively, described input circuit is connected with reception antenna, it is characterized in that, the usb circuit also comprising microprocessor and be connected with microprocessor, this microprocessor is connected with low frequency treatment circuit, and connects mixing frequency changer circuit by voltage-controlled oscillating circuit; Described demodulator circuit connects microprocessor by interferer signal detection circuit; Described interferer signal detection circuit comprises comparator IC2A, and its inverting input accesses reference voltage by adjustable resistance VR1, the signal RSSI that the receiving element of in-phase input end access after mixing demodulation receives, and output RSSI OUT connects governor circuit;
Described microphone unit comprises microprocessor and the pick-up connected successively, audio frequency processing circuit, signal modulation circuit, carrier wave amplifying circuit, described carrier wave amplifying circuit is connected with transmitting antenna, microprocessor is connected by frequency oscillation circuit and signal modulation circuit, and microprocessor is also connected with usb circuit and power control circuit
;receiving element is also provided with the key circuit switched for mode of operation, and this key circuit is connected with microprocessor
;receiving element is also provided with display driver circuit and display screen, and this display driver circuit is connected with microprocessor.
2.
a kind of as claimed in claim 1the Auto-mounting adjustment method of wireless microphone system, the steps include:
(1) adopt data wire to be connected with the USB interface of microphone unit by multiple wireless microphone system receiving element respectively, and the two operating frequency is adjusted to unanimously, signal can be transmitted and received normally; And the initial operating frequency arranging each wireless microphone system is all not identical;
(2) control microphone unit power-off by receiving element, whether can receive signal by receiving element and then whether have interference under judging this frequency; If any interference, receiving element changes operating frequency and to control microphone unit consistent with its holding frequency; Step (3) is entered as noiseless;
(3) microphone unit adopts the frequency operation determined in step (2), controls the intermittent open and close of microphone unit power supply, whether can receive signal and then whether have interference under judging this frequency by receiving element by receiving element;
(4) as receiving element detects interference signal, then change frequency and control microphone unit consistent with receiving element frequency after, repeat the Interference Detection that step (3) continues circulation, until through the regular hour or after detecting number of times, do not have interference signal to occur, receiving element will be judged as that debugging completes, and be completed by display screen instruction automatic Debugging, after roomed receiving element all completes automatic Debugging, described wireless microphone system just can normally come into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010598410.2A CN102036138B (en) | 2010-12-21 | 2010-12-21 | Wireless microphone system and automatic installing and debugging method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010598410.2A CN102036138B (en) | 2010-12-21 | 2010-12-21 | Wireless microphone system and automatic installing and debugging method thereof |
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| Publication Number | Publication Date |
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| CN102036138A CN102036138A (en) | 2011-04-27 |
| CN102036138B true CN102036138B (en) | 2015-04-08 |
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| CN201010598410.2A Active CN102036138B (en) | 2010-12-21 | 2010-12-21 | Wireless microphone system and automatic installing and debugging method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102355620A (en) * | 2011-06-09 | 2012-02-15 | 周意春 | Method for realizing automatic debugging of wireless microphone and automatic debugging system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009492A (en) * | 2007-01-16 | 2007-08-01 | 吴中活 | Wireless microphone system |
| CN101827295A (en) * | 2009-12-23 | 2010-09-08 | 杨志豪 | Wireless microphone and anti-interference method thereof |
| CN201887943U (en) * | 2010-12-21 | 2011-06-29 | 杨志豪 | Wireless microphone system |
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- 2010-12-21 CN CN201010598410.2A patent/CN102036138B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009492A (en) * | 2007-01-16 | 2007-08-01 | 吴中活 | Wireless microphone system |
| CN101827295A (en) * | 2009-12-23 | 2010-09-08 | 杨志豪 | Wireless microphone and anti-interference method thereof |
| CN201887943U (en) * | 2010-12-21 | 2011-06-29 | 杨志豪 | Wireless microphone system |
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Effective date of registration: 20151215 Address after: 516121, Huizhou County, Guangdong City, Boluo province Longxi village, the fifth group is located in the post Patentee 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 Patentee before: Yang Zhihao |