CN212064306U - Microphone power supply circuit, base and conference microphone - Google Patents
Microphone power supply circuit, base and conference microphone Download PDFInfo
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- CN212064306U CN212064306U CN202020807608.6U CN202020807608U CN212064306U CN 212064306 U CN212064306 U CN 212064306U CN 202020807608 U CN202020807608 U CN 202020807608U CN 212064306 U CN212064306 U CN 212064306U
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Abstract
The utility model discloses a microphone power supply circuit, base and meeting microphone, microphone power supply circuit includes: a microprocessor; the route selection switch component is used for selecting a power supply circuit and is connected with a data communication pin of the microprocessor; the first power supply circuit is connected with the routing switch component; and the second power supply circuit is connected with the routing switch component. The utility model provides a microphone power supply circuit can be the power supply of the microphone pole of two kinds of differences, and the suitability is strong, if the supporting microphone pole of the former factory breaks down in the meeting process, can use other reserve microphone poles for the meeting can continue to go on, can not influence normal meeting flow, has saved meeting personnel's time, has improved office efficiency.
Description
Technical Field
The utility model belongs to the technical field of the microphone technique and specifically relates to a microphone power supply circuit, base and meeting microphone are related to.
Background
A conference microphone typically comprises a base and a microphone stem on which a pick-up head is arranged. Traditional base can only be applicable to the supporting microphone pole of former factory, and the suitability is not strong, if the supporting microphone pole of former factory breaks down in the meeting process, can only purchase the microphone pole of former factory and change the back and just can continue to use, can not use other reserve microphone poles, seriously influences normal meeting flow, extravagant meeting personnel's time.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a microphone power supply circuit can supply power for the microphone pole of two kinds of differences, and the suitability is strong.
The utility model discloses still provide a base that has above-mentioned microphone power supply circuit.
The utility model discloses still provide a conference microphone that has above-mentioned base.
According to the utility model discloses microphone power supply circuit of first aspect embodiment includes: a microprocessor; the route selection switch component is used for selecting a power supply circuit and is connected with a data communication pin of the microprocessor; the first power supply circuit is connected with the routing switch component; and the second power supply circuit is connected with the routing switch component.
According to the utility model discloses microphone power supply circuit has following beneficial effect at least: the utility model provides a microphone power supply circuit can be for the power supply of two kinds of different microphone poles, and the suitability is strong, if the supporting microphone pole of former factory breaks down in the meeting process, can use other reserve microphone poles for the meeting can continue to go on, can not influence normal meeting flow, has saved meeting personnel's time, has improved office efficiency.
According to some embodiments of the utility model, select a path switch subassembly includes relay circuit and dial switch circuit, dial switch circuit's data output end with microprocessor's data communication pin is connected, relay circuit's data input end with microprocessor's data communication pin is connected.
According to some embodiments of the utility model, the relay circuit includes relay K1, relay K1 includes first normal open foot, first normally closed foot and first public end, the one end of first public end can respectively with first normal open foot perhaps first normally closed foot is connected, and the other end is used for being connected with the microphone pole, first normal open foot with first power supply circuit connects, first normally closed foot with second power supply circuit connects.
According to some embodiments of the present invention, the relay circuit further includes a second triode Q2, a third diode D3, a seventeenth resistor R17 and a thirteenth capacitor C13, the third diode D3 and the relay K1 are connected in parallel and then connected to the emitter of the second triode Q2, wherein the anode of the third diode D3 is connected to the emitter, the cathode of the third diode D3 is connected to the external voltage terminal, the collector of the second triode Q2 is grounded, the base of the second triode Q2 is grounded through the thirteenth capacitor C13, and the base of the second triode Q2 is connected to the data communication pin of the microprocessor through the seventeenth resistor R17.
According to some embodiments of the utility model, the dial switch circuit includes dial switch S1 and twentieth resistance R20, dial switch S1 includes second common port, the normal open foot of second and second normally closed foot, the second common port with microprocessor' S data communication pin is connected, the normal open foot of second ground connection, the normal closed foot of second passes through twentieth resistance R20 is connected to the external voltage end.
According to some embodiments of the utility model, still include first audio amplifier circuit, first audio amplifier circuit's data input end with microprocessor's data communication pin is connected.
According to some embodiments of the utility model, still include second audio amplifier circuit, second audio amplifier circuit's data input end with microprocessor's data communication pin is connected.
According to some embodiments of the invention, the second power supply circuit is a phantom power supply.
According to the utility model discloses base of second aspect embodiment, include according to the utility model discloses the microphone power supply circuit of above-mentioned first aspect embodiment.
According to the utility model discloses base has following beneficial effect at least: through adopting foretell microphone power supply circuit for the base can be applicable to different microphone poles, can choose the microphone pole of different power supply modes for use according to concrete circumstances, if the supporting microphone pole of former factory breaks down in the meeting process, can use other power supply modes's reserve microphone pole, makes the meeting can continue to go on, can not influence normal meeting flow, has saved meeting personnel's time, has improved office efficiency.
According to the utility model discloses conference microphone of third aspect embodiment, including the microphone pole and according to the utility model discloses the base of above-mentioned second aspect embodiment, the microphone pole sets up on the base, the microphone pole is provided with the sound pickup head.
According to the utility model discloses conference microphone has following beneficial effect at least: through adopting foretell base for the microphone pole of meeting microphone can be changed, can choose the microphone pole of different power supply modes for use according to concrete circumstances, if the microphone pole that the former factory was supporting breaks down in the meeting process, can use other power supply modes's reserve microphone pole, makes the meeting can continue to go on, can not influence normal meeting flow, has saved meeting personnel's time, has improved office efficiency.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic circuit diagram of a microprocessor and a dial switch circuit according to an embodiment of the present invention;
fig. 2 is a circuit schematic diagram of a relay circuit of an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a first power supply circuit according to an embodiment of the present invention;
fig. 4 is a circuit schematic of a second power supply circuit of an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a first audio amplifying circuit according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a second audio amplifying circuit according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a microphone switching circuit according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a microphone light switch circuit according to an embodiment of the present invention;
fig. 9 is a schematic circuit diagram of an indicator light driving module according to an embodiment of the present invention;
fig. 10 is a circuit schematic of a communication module of an embodiment of the present invention;
fig. 11 is another part of a circuit schematic of a first audio amplifying circuit according to an embodiment of the present invention;
fig. 12 is another part of a circuit schematic of a first audio amplifying circuit according to an embodiment of the present invention;
fig. 13 is another part of a circuit schematic of a first audio amplifying circuit according to an embodiment of the present invention;
fig. 14 is another part of a circuit schematic of a first audio amplifying circuit according to an embodiment of the present invention;
fig. 15 is another part of a circuit schematic of a first audio amplifying circuit according to an embodiment of the present invention;
fig. 16 is a schematic circuit diagram of an indication circuit according to an embodiment of the present invention.
Reference numerals:
the audio amplifier comprises a microprocessor 100, an indicating circuit 110, a relay circuit 200, a first normally-on pin 201, a first normally-off pin 202, a first common terminal 203, a first power supply circuit 300, a second power supply circuit 400, a dial switch circuit 500, a second normally-on pin 501, a second normally-off pin 502, a second common terminal 503, a first audio amplifier circuit 600, a second audio amplifier circuit 700, a microphone switch circuit 810, a microphone lamp switch circuit 820, an indicator lamp driving module 821, a communication module 900, a relay K1, a second triode Q2, a third diode D3, a seventeenth resistor R17, a thirteenth capacitor C13, a dial switch S1, a twentieth resistor R20, a second diode D2 and a nineteenth resistor R19.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, the first, second, third, thirteenth, seventeenth, nineteenth and twentieth, if any, are only used for distinguishing technical features, and are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number.
In the description of the present invention, unless there is an explicit limitation, the words such as setting and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.
A microphone power supply circuit according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 16.
Referring to fig. 1 to 4, in an embodiment of the present invention, the microphone power circuit includes a microprocessor 100, a routing switch assembly, a first power supply circuit 300 and a second power supply circuit 400, the routing switch assembly is used for selecting the power supply circuit, the routing switch assembly is connected to a data communication pin of the microprocessor 100, the first power supply circuit 300 is connected to the routing switch assembly, and the second power supply circuit 400 is connected to the routing switch assembly. The utility model discloses microphone power supply circuit can select first supply circuit 300 or second supply circuit 400 to come to supply power to the microphone pole, and it should be understood that the power supply mode and the operating voltage of first supply circuit 300 and second supply circuit 400 are different, through adopting such circuit structure, make the utility model discloses microphone power supply circuit can be the microphone pole power supply of two kinds of differences, and the suitability is strong, if the supporting microphone pole of china and factory breaks down in the meeting process, can use other reserve microphone poles for the meeting can continue to go on, can not influence normal meeting flow, has saved meeting personnel's time, has improved office efficiency.
Referring to fig. 3 and 4, it should be understood that the first power supply circuit 300 is a default power supply circuit of the conference system, has an output voltage of 3V, and can supply power to a microphone boom equipped in the base factory, the second power supply circuit 400 boosts a voltage of 5V to 48V, and has a phantom power supply with an output voltage of 48V, and can supply power to a magic microphone boom with an operating voltage of 48V, and for convenience of description, the microphone boom equipped in the base factory is referred to as a first microphone boom, and the magic microphone boom with an operating voltage of 48V is referred to as a second microphone boom.
In an embodiment of the present invention, the routing switch assembly includes a relay circuit 200 and a dial switch circuit 500, a data output terminal of the dial switch circuit 500 is connected to a data communication pin of the microprocessor 100, and a data input terminal of the relay circuit 200 is connected to a data communication pin of the microprocessor 100. The user can select the first power supply circuit 300 or the second power supply circuit 400 through the dial switch circuit 500, and after the microprocessor 100 acquires the control information of the dial switch circuit 500, the microprocessor controls the working state of the relay circuit 200 according to the control information, and then selects the first power supply circuit 300 or the second power supply circuit 400 to supply power to the microphone pole.
It should be understood that the routing switch assembly can also be a two-gear self-locking switch, and different power supply circuits can be selected through different gears, and of course, the routing switch assembly can also be in other circuit forms, and is not limited to this.
In an embodiment of the present invention, the relay circuit 200 includes the relay K1, the relay K1 includes the first normally open pin 201, the first normally closed pin 202 and the first common terminal 203, one end of the first common terminal 203 can be connected with the first normally open pin 201 or the first normally closed pin 202 respectively, the other end is used for being connected with the microphone rod, the first normally open pin 201 is connected with the first power supply circuit 300, and the first normally closed pin 202 is connected with the second power supply circuit 400. The working state of the relay K1 includes a normally-on state and an attraction state, wherein in the normally-on state, the first common terminal 203 is connected to the first power supply circuit 300 through the first normally-on pin 201, at this time, the first power supply circuit 300 supplies power to the first microphone rod, and in the attraction state, the first common terminal 203 is connected to the second power supply circuit 400 through the first normally-closed pin 202, at this time, the second power supply circuit 400 supplies power to the second microphone rod.
In an embodiment of the present invention, the relay circuit 200 further includes a second triode Q2, a third diode D3, a seventeenth resistor R17 and a thirteenth capacitor C13, the third diode D3 is connected to the emitter of the second triode Q2 after being connected in parallel with the relay K1, wherein the anode of the third diode D3 is connected to the emitter, the negative electrode of the third diode D3 is connected to the external voltage terminal, the collector of the second triode Q2 is grounded, the base of the second triode Q2 is grounded through the thirteenth capacitor C13, and the base of the second triode Q2 is connected to the data communication pin of the microprocessor 100 through the seventeenth resistor R17. Specifically, the data input end of the relay circuit 200 is connected to a pin P1.1 of the microprocessor 100, the microprocessor 100 selects an MA801 type chip, when the pin P1.1 of the microprocessor 100 outputs a low level, the second triode Q2 is in a cut-off state, the relay K1 is in a normally-on state, the first common end 203 is connected to the first normally-on pin 201, and at this time, the microphone power supply circuit of the embodiment of the present invention adopts the first power supply circuit 300 to supply power to the first microphone rod; when microprocessor 100's P1.1 pin output is the high level, second triode Q2 is for conducting state, and first common port 203 is connected with first normally closed foot 202, and relay K1 is the actuation state, this moment, the utility model discloses a microphone power supply circuit adopts second power supply circuit 400 to supply power for the second microphone pole. The seventeenth resistor R17 is used for voltage division, the thirteenth capacitor C13 is used for filtering, and the seventeenth resistor R17 and the thirteenth capacitor C13 are provided to ensure that the second transistor Q2 can normally operate, so as to prevent the second transistor Q2 from being incapable of normally operating due to overhigh voltage or radio wave interference.
It is understood that the voltage value of the external voltage terminal is 5V or 12V.
Referring to fig. 1 and 16, in some embodiments of the present invention, the dial switch circuit 500 includes a dial switch S1 and a twentieth resistor R20, the dial switch S1 includes a second common terminal 503, a second normally-on pin 501 and a second normally-closed pin 502, the second common terminal 503 is connected to the data communication pin of the microprocessor 100, the second normally-on pin 501 is grounded, and the second normally-closed pin 502 is connected to the voltage input terminal through the twentieth resistor R20. It should be noted that the pin P1.2 of the microprocessor 100 is connected with an indication circuit 110, the indication circuit 110 indicates whether to connect the second power supply circuit 400, the indication circuit 110 includes a second diode D2 and a nineteenth resistor R19, the second diode D2 is connected in series with the nineteenth resistor R19, the cathode of the second diode D2 is connected with the pin P1.2 of the microprocessor 100, the other end of the nineteenth resistor R19 is connected with an external voltage terminal, the second diode D2 is a light emitting diode, when the indication lamp of the second diode D2 is on, it indicates to connect the second power supply circuit 400, and when the indication lamp of the second diode D2 is not on, it indicates to connect the first power supply circuit 300. Specifically, the second common terminal 503 is connected to a pin P1.3 of the microprocessor 100, when the dial switch S1 is pulled out to one end of the second normally closed pin 502, the microprocessor 100 detects that the pin P1.3 is at a high level, the output of the pin P1.2 is at a high level, the indicator light of the second diode D2 is not on, the output of the pin P1.1 of the microprocessor 100 is at a low level, the second triode Q2 is in an off state, and the relay K1 is in a normally on state, at this time, the microphone power supply circuit of the embodiment of the present invention adopts the first power supply circuit 300 to supply power to the first microphone rod; when dial switch S1 pulled out the one end of second normal open foot 501, microprocessor 100 detected that P1.3 pin was the low level, and P1.2 pin output was the low level, and second diode D2 pilot lamp was bright this moment, and microprocessor 100' S P1.1 pin output is the high level, and second triode Q2 is for conducting state, and relay K1 is the actuation state, and at this moment, the utility model discloses a microphone power supply circuit adopts second supply circuit 400 to supply power for the second microphone pole. It should be understood that the twentieth resistor R20 is provided to divide the voltage to prevent the microprocessor 100 from being damaged due to the excessive voltage applied to the microprocessor.
Referring to fig. 5, 11 to 15, in an embodiment of the present invention, the present invention further includes a first audio amplifier circuit 600, and a data input terminal of the first audio amplifier circuit 600 is connected to a data communication pin of the microprocessor 100. Specifically, when dial switch S1 pulled out the one end of second normally closed foot 502, the utility model discloses a first microphone pole of microphone power supply circuit connection, first audio amplifier circuit 600' S effect was the audio signal that first microphone pole received and is enlargied the processing.
Referring to fig. 6, in an embodiment of the present invention, the audio amplifier further includes a second audio amplifier circuit 700, and a data input terminal of the second audio amplifier circuit 700 is connected to a data communication pin of the microprocessor 100. Specifically, when dial switch S1 pulled out the one end of second normal open foot 501, the utility model discloses a microphone power supply circuit connects second microphone pole, and second audio amplifier circuit 700' S effect is to carry out amplification to the audio signal that second microphone pole received.
In some embodiments of the present invention, the second power supply circuit 400 is a phantom power supply. Specifically, the output voltage of the second power supply circuit 400 is 48V. The microphone boom powered by the phantom power supply is widely applied to various scenes such as conferences, live broadcasts, news and the like, and the second power supply circuit 400 is the phantom power supply with the output voltage of 48V, so that the microphone boom can be quickly found when the microphone boom needs to be replaced.
Referring to fig. 7, in some embodiments of the present invention, a microphone switch circuit 810 is further included, a data input terminal of the microphone switch circuit 810 is connected to a data communication pin of the microprocessor 100, and the microphone switch circuit is used for controlling the microphone to be turned on and off.
Referring to fig. 8, in an embodiment of the present invention, the microphone light switch circuit 820 is further included, a data input terminal of the microphone light switch circuit 820 is connected to a data communication pin of the microprocessor 100, and the microphone light switch circuit 820 is used for controlling the on and off of the microphone indicator light.
Referring to fig. 9, in an embodiment of the present invention, the present invention further includes an indicator light driving module 821, the indicator light driving module 821 is connected to the P1.0 pin of the microprocessor 100, and the indicator light driving module 821 can provide an indicator light display, so that a user can know the usage status of the microphone in time.
Referring to fig. 1 and 10, in an embodiment of the present invention, the conference system further includes a communication module 900, and when the conference microphone is connected to the conference system, the main control computer of the conference system manages and controls the conference microphone through the communication module 900.
According to the utility model discloses base of second aspect embodiment, include according to the utility model discloses the microphone power supply circuit of above-mentioned first aspect embodiment.
According to the utility model discloses the base is through adopting foretell microphone power supply circuit for the base can be applicable to different microphone poles, can choose the microphone pole of different power supply modes for use according to concrete circumstances, if the supporting microphone pole of former factory breaks down in the meeting process, can use other power supply modes's reserve microphone pole, makes the meeting can continue to go on, can not influence normal meeting flow, has saved meeting personnel's time, has improved office efficiency.
Other constructions and operations of the base according to embodiments of the invention are known to those skilled in the art and will not be described in detail here.
According to the utility model discloses conference microphone of third aspect embodiment, including the microphone pole and according to the utility model discloses the base of above-mentioned second aspect embodiment, the microphone pole sets up on the base, and the microphone pole is provided with the sound pickup head.
It is worth noting that the microphone rod is detachably connected with the base through a standard XLR interface, the XLR interface is widely applied to various microphone rods, and applicability is strong.
According to the utility model discloses conference microphone is through adopting foretell base for conference microphone's microphone pole can be changed, can choose the microphone pole of different power supply modes for use according to concrete circumstances, if the supporting microphone pole of raw and other plants breaks down in the meeting process, can use other power supply modes's reserve microphone pole, makes the meeting can continue to go on, can not influence normal meeting flow, has saved meeting personnel's time, has improved office efficiency.
Other configurations and operations of the conference microphone according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of "one embodiment" or "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge range of those skilled in the art.
Claims (10)
1. A microphone power supply circuit, comprising:
a microprocessor (100);
a routing switch assembly for selecting a power supply circuit, the routing switch assembly being connected to a data communication pin of the microprocessor (100);
a first power supply circuit (300), the first power supply circuit (300) connected to the routing switch assembly;
a second power supply circuit (400), the second power supply circuit (400) connected to the routing switch assembly.
2. The microphone power supply circuit according to claim 1, wherein the routing switch assembly comprises a relay circuit (200) and a dial switch circuit (500), a data output terminal of the dial switch circuit (500) is connected with a data communication pin of the microprocessor (100), and a data input terminal of the relay circuit (200) is connected with a data communication pin of the microprocessor (100).
3. Microphone power supply circuit according to claim 2, characterized in that the relay circuit (200) comprises a relay K1, the relay K1 comprising a first normally open pin, a first normally closed pin (202) and a first common terminal (203), the first common terminal (203) having one end connectable to the first normally open pin or the first normally closed pin (202), respectively, and the other end for connection to a microphone pole, the first normally open pin being connected to the first power supply circuit (300), the first normally closed pin (202) being connected to the second power supply circuit (400).
4. The microphone power circuit according to claim 3, wherein the relay circuit (200) further comprises a second transistor Q2, a third diode D3, a seventeenth resistor R17 and a thirteenth capacitor C13, wherein the third diode D3 is connected in parallel with the relay K1 and then connected to an emitter of the second transistor Q2, wherein an anode of the third diode D3 is connected to the emitter, a cathode of the third diode D3 is connected to an external voltage terminal, a collector of the second transistor Q2 is grounded, a base of the second transistor Q2 is grounded through the thirteenth capacitor C13, and a base of the second transistor Q2 is connected to a data communication pin of the microprocessor (100) through the seventeenth resistor R17.
5. The microphone power circuit according to claim 3, wherein the dial switch circuit (500) comprises a dial switch S1 and a twentieth resistor R20, the dial switch S1 comprises a second common terminal (503), a second normally-on pin (501) and a second normally-closed pin (502), the second common terminal (503) is connected with a data communication pin of the microprocessor (100), the second normally-on pin (501) is grounded, and the second normally-closed pin (502) is connected to an external voltage terminal through the twentieth resistor R20.
6. Microphone power supply circuit according to claim 1, characterized by further comprising a first audio amplifier circuit (600), the data input of the first audio amplifier circuit (600) being connected to a data communication pin of the microprocessor (100).
7. Microphone power supply circuit according to claim 1, characterized by further comprising a second audio amplification circuit (700), the data input of the second audio amplification circuit (700) being connected to a data communication pin of the microprocessor (100).
8. Microphone power supply circuit according to claim 1, characterized in that the second power supply circuit (400) is a phantom power supply.
9. A base comprising a microphone power circuit according to any of claims 1 to 8.
10. A conference microphone, characterized in that it comprises a microphone stem and a base as claimed in claim 9, the microphone stem being arranged on the base, the microphone stem being provided with a pick-up head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020807608.6U CN212064306U (en) | 2020-05-14 | 2020-05-14 | Microphone power supply circuit, base and conference microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020807608.6U CN212064306U (en) | 2020-05-14 | 2020-05-14 | Microphone power supply circuit, base and conference microphone |
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| Publication Number | Publication Date |
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| CN212064306U true CN212064306U (en) | 2020-12-01 |
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| CN202020807608.6U Active CN212064306U (en) | 2020-05-14 | 2020-05-14 | Microphone power supply circuit, base and conference microphone |
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| CN (1) | CN212064306U (en) |
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- 2020-05-14 CN CN202020807608.6U patent/CN212064306U/en active Active
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