CN207766515U - Sound equipment with control function - Google Patents
Sound equipment with control function Download PDFInfo
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- CN207766515U CN207766515U CN201820201526.XU CN201820201526U CN207766515U CN 207766515 U CN207766515 U CN 207766515U CN 201820201526 U CN201820201526 U CN 201820201526U CN 207766515 U CN207766515 U CN 207766515U
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Abstract
The utility model discloses a kind of sound equipments with control function, including microcontroller, analog audio interface, optical fiber audio interface, USB interface, wireless communication module, D/A converter, power amplification circuit, loud speaker, touching display screen and power supply circuit, analog audio interface, optical fiber audio interface, USB interface, wireless communication module, D/A converter, power amplification circuit, loud speaker, touching display screen and power supply circuit are connect with microcontroller；Power amplification circuit includes voltage input end, voltage output end, DC power supply, the first triode, the second triode, third transistor, first resistor, second resistance, 3rd resistor, the first diode, the second diode, the first capacitance and the second capacitance, and the base stage of the first triode is connect with one end of voltage input end and first resistor respectively.The communication mode of the utility model is more flexibly, circuit structure is relatively simple, cost is relatively low, the safety and reliability of circuit is higher.
Description
Technical field
The utility model is related to field of audio, more particularly to a kind of sound equipment with control function.
Background technology
Sound equipment refers to other sounds other than the language of people, music, includes the sound of the sound of natural environment, animal
The various sound etc. that the action of sound, the sound equipment of machine tools, people is sent out.Sound equipment probably include power amplifier, peripheral equipment (including pressure limit
Device, effect device, balanced device, VCD, DVD etc.), loud speaker (speaker, loudspeaker), sound console, microphone, display equipment etc. added
Come a set of.Wherein, speaker is exactly audio output device, loudspeaker, subwoofer etc..In one speaker include it is high and low, in three kinds raise
Sound device, three kinds but not necessarily with regard to three.The communication mode of traditional sound equipment and external control devices is more single, cannot meet more
The demand of sample.In addition, the circuit structure inside traditional sound equipment is complicated, hardware cost is higher.And inside traditional sound equipment
Circuit causes the safety and reliability of circuit not high due to lacking corresponding circuit protection function.
Utility model content
The technical problem to be solved by the present invention is to for the drawbacks described above of the prior art, provide a kind of communication party
Formula is more flexibly, circuit structure is relatively simple, cost is relatively low, the safety and reliability of circuit is higher with control function
Sound equipment.
Technical solution adopted by the utility model to solve its technical problems is：Construct a kind of sound with control function
It rings, including microcontroller, analog audio interface, optical fiber audio interface, USB interface, wireless communication module, D/A converter, power are put
Big circuit, loud speaker, touching display screen and power supply circuit, the analog audio interface are connect with the microcontroller, for inputting
Analog audio signal, the optical fiber audio interface connect with the microcontroller, are used for input digital audio signal, and the USB connects
Mouth is connect with the microcontroller, for receiving the audio data in External memory equipment, the wireless communication module and the list
The connection of piece machine, for being carried out wireless communication with mobile terminal, the D/A converter connect with the microcontroller, be used for will described in
The digital audio and video signals that microcontroller receives are converted to analog audio signal, and the power amplification circuit is converted with the D/A respectively
Device is connected with microcontroller, for being amplified to the analog audio signal, and amplified audio signal is sent to described
Loud speaker plays out, and the touching display screen is connect with the microcontroller, and the power supply circuit connect with the microcontroller, uses
In power supply；
The power amplification circuit includes voltage input end, voltage output end, DC power supply, the first triode, the two or three
Pole pipe, third transistor, first resistor, second resistance, 3rd resistor, the first diode, the second diode, the first capacitance and
The base stage of two capacitances, first triode is connect with one end of the voltage input end and first resistor respectively, and described first
The other end of resistance is connect with one end of first capacitance and voltage output end respectively, the other end difference of first capacitance
Connect with the cathode of one end of the second resistance and the second diode, the anode of second diode respectively with the direct current
The collector of power supply and the second triode connects, the base stage of second triode respectively with the other end of the second resistance and
The anode of first diode connects, and the cathode of first diode is electric with the collector of first triode and second respectively
One end of appearance connects, and the other end of second capacitance is connect with the base stage of the third transistor, first triode
Emitter is grounded by the 3rd resistor, the emitter of second triode and the emitter of third transistor with it is described
Voltage output end connects, the grounded collector of the third transistor, the model S-701 of second diode, and described the
The capacitance of two capacitances is 620pF.
Described in the utility model in the sound equipment of control function, the power amplification circuit further includes the three or two pole
Pipe, the anode of the third diode connect with one end of the other end of the first resistor and the first capacitance respectively, and described the
The model E-501 of three diodes.
Described in the utility model in the sound equipment of control function, the power amplification circuit further includes the 4th electricity
Resistance, one end of the 4th resistance are connect with the DC power supply, the other end and second triode of the 4th resistance
Collector connection, the resistance value of the 4th resistance is 30k Ω.
Described in the utility model in the sound equipment of control function, the power amplification circuit further includes the 5th electricity
Resistance, one end of the 5th resistance are connect with the collector of the third transistor, the other end ground connection of the 5th resistance, institute
The resistance value for stating the 5th resistance is 45k Ω.
Described in the utility model in the sound equipment of control function, first triode is NPN type triode, institute
It is NPN type triode to state the second triode, and the third transistor is PNP type triode.
Described in the utility model in the sound equipment of control function, the wireless communication module be bluetooth module,
WIFI module, gsm module, GPRS module, CDMA module, CDMA2000 modules, WCDMA modules, TD-SCDMA modules, Zigbee
Module or LoRa modules.
The sound equipment with control function for implementing the utility model, has the advantages that：Due to being equipped with wireless communication
Module, can increase the flexibility of communication mode, power amplification circuit include voltage input end, voltage output end, DC power supply,
First triode, the second triode, third transistor, first resistor, second resistance, 3rd resistor, the first diode, the two or two
Pole pipe, the first capacitance and the second capacitance, the power amplification circuit is relative to traditional power amplification circuit, the component that uses
It is less, hardware cost can be reduced in this way, in addition, the second diode is used to carry out current limliting to the collector current of the second triode
Protection, the second capacitance is used to prevent the interference between the first triode and third transistor, therefore communication mode is more flexible, electricity
Line structure is relatively simple, cost is relatively low, the safety and reliability of circuit is higher.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram in the sound equipment one embodiment of the utility model with control function；
Fig. 2 is the circuit diagram of power amplification circuit in the embodiment.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It, should be with the structural representation of the sound equipment of control function in the sound equipment embodiment that the utility model has control function
Figure is as shown in Figure 1.Should include microcontroller 1, analog audio interface 2, optical fiber audio interface with the sound equipment of control function in Fig. 1
3, USB interface 4, wireless communication module 5, D/A converter 6, power amplification circuit 7, loud speaker 8, touching display screen 9 and power supply electricity
Road 10, wherein analog audio interface 2 and optical fiber audio interface 3 are accessing the audio input data line of different type port, mould
Quasi- audio interface 2 is connect with microcontroller 1, for inputting analog audio signal, and optical fiber audio interface 3 connect with microcontroller 1, is used for
Input digital audio signal, to meet the different use demands of user.USB interface 4 is connect with microcontroller 1, for receiving outside
Audio data in storage device is used for External memory equipment grafting, and the audio data in External memory equipment connects by USB
Mouth 4 is read and is transmitted by microcontroller 1, which can be USB flash disk, SD card, TF card etc..
Wireless communication module 5 is connect with microcontroller 1, for being carried out wireless communication with mobile terminal, and mobile terminal can be
Tablet computer or mobile phone etc..After mobile terminal sends out control signal, wireless communication module 5 is completed and control signal control
Wireless communication module 5 is completed after being wirelessly connected, 5 exports audio signal of wireless communication module, and is transmitted to microcontroller 1.D/A is converted
Device 6 is connect with microcontroller 1, the digital audio and video signals for receiving microcontroller 1 are converted to analog audio signal, power amplification electricity
Road 7 is connect respectively with D/A converter 6 and microcontroller 1, for being amplified to analog audio signal, and by amplified audio
Signal is sent to loud speaker 8 and plays out, and touching display screen 9 connect with microcontroller 1, is used for human-computer interaction, power supply circuit 10 with
Microcontroller 1 connects, for powering.
In the present embodiment, microcontroller 1 controls the open and close of D/A converter 6, and the audio signal that microcontroller 1 receives is
When analog audio signal, microcontroller 1 control D/A converter 6 close, analog audio signal directly by power amplification circuit 7 into
Row amplification, and then export；When the audio signal that microcontroller 1 receives is digital audio and video signals, microcontroller 1 controls D/A converter 6
It opens, digital audio and video signals are put after D/A converter 6 is converted to analog audio signal, then by power amplification circuit 7
Greatly, it and then exports.
In the present embodiment, by the way that wireless communication module 5 is arranged, the flexibility of communication can be increased.The wireless communication module 5
Can be bluetooth module, WIFI module, gsm module, GPRS module, CDMA module, CDMA2000 modules, WCDMA modules, TD-
SCDMA modules, Zigbee module or LoRa modules etc..By be arranged various wireless communication mode, can meet different user and
Without the demand of occasion, when in particular by LoRa modules, farther out, and communication performance is relatively stable, is suitable for for communication distance
To the higher occasion of QoS requirement.
Fig. 2 is the circuit diagram of power amplification circuit in the present embodiment, and in Fig. 2, which includes voltage
Input terminal Vi, voltage output end Vo, DC power supply VCC, the first triode Q1, the second triode Q2, third transistor Q3, first
Resistance R1, second resistance R2,3rd resistor R3, the first diode D1, the second diode D2, the first capacitance C1 and the second capacitance
C2, wherein the base stage of the first triode Q1 is connect with one end of voltage input end Vi and first resistor R1 respectively, first resistor R1
The other end connect respectively with one end of the first capacitance C1 and voltage output end Vo, the other end of the first capacitance C1 is respectively with second
One end of resistance R2 is connected with the cathode of the second diode D2, the anode of the second diode D2 respectively with DC power supply VCC and
The collector of two triode Q2 connects, the base stage of the second triode Q2 respectively with the other end of second resistance R2 and the first diode
The anode of D1 connects, and the cathode of the first diode D1 connects with one end of the collector of the first triode Q1 and the second capacitance C2 respectively
It connects, the other end of the second capacitance C2 is connect with the base stage of third transistor Q2, and the emitter of the first triode Q1 passes through third electricity
R3 ground connection is hindered, the emitter of the second triode Q2 and the emitter of third transistor Q3 are connect with voltage output end Vo, third
The grounded collector of triode Q3.
For the power amplification circuit 7 relative to traditional power amplification circuit, the component used is less, circuit structure compared with
To be simple, hardware cost can be reduced in this way.Second diode Q2 is Current Limiting Diodes, for the current collection to the second triode Q2
Electrode current carries out current-limiting protection, and the second capacitance C2 is coupled capacitor, for prevent the first triode Q1 and third transistor Q3 it
Between interference, therefore the safety and reliability of circuit is higher.It is noted that in the present embodiment, the second diode Q2's
The capacitance of model S-701, the second capacitance C2 are 620pF, and the voltage that DC power supply VCC is provided is 8V.Certainly, it is actually answering
In, the second diode Q2 can also select other models to have the diode of similar functions, and the capacitance of the second capacitance C2 can
To adjust accordingly as the case may be.
When the signal of voltage input end Vi inputs is direct current signal, after DC power supply VCC is connected, the first triode Q1,
Second triode Q2 and third transistor Q3 is not to simultaneously turn on, and DC power supply VCC is first through the second diode D2 and
Two resistance R2 provide base current for the second triode Q2 makes the second triode Q2 conductings, after the second triode Q2 conductings, it
Emitter current provide base current for the first triode Q1 through first resistor R1 all the way and make the first triode Q1 conducting, the
After one triode Q1 conducting, the base current of third transistor Q3 could by the current collection best emitter of the first triode Q1,
3rd resistor R3 is connected to ground, to make third transistor Q3 be connected, the direct current signal of voltage output end Vo output amplifications.
When the signal of voltage input end Vi inputs is AC signal, AC signal is sent to the base stage of the first triode Q1,
It is exported from collector after amplification, since collector and base stage are inverted relationships, so the collector output of the first triode Q1
Signal and base signal polarity are defeated from collector on the contrary, when the positive half cycle signal of AC signal is after the first triode Q1 amplifies
Go out to become negative half-cycle signal, which makes A point voltages decline, and after the first diode D1, B point voltages also decline, the two or three pole
Pipe Q2 cut-offs, the decline of A point voltages can be such that the conducting degree of third transistor Q3 deepens, into normal magnifying state, there is amplification
Electric current is exported from voltage output end Vo；The negative half-cycle signal flow of AC signal is similar with above-mentioned flow, so, work as AC signal
Positive-negative half-cycle signal when circuit is added, the second triode Q2 and third transistor Q3 are worked alternatively, and have the letter completely amplified
Number from voltage output end Vo export.
It is noted that in the present embodiment, the first triode Q1 is NPN type triode, and the second triode Q2 is NPN type
Triode, third transistor Q3 are PNP type triode.Certainly, in practical applications, the first triode Q1 may be positive-negative-positive
Triode, the second triode Q2 may be PNP type triode, and third transistor Q3 may be NPN type triode, but at this moment
The structure of circuit also will accordingly change.
In the present embodiment, which further includes third diode D3, the anode of third diode D3 respectively with
One end of the other end of first resistor R1 and the first capacitance C1 connect.Third diode D3 is Current Limiting Diodes, for first
Branch between resistance R1 and voltage output end Vo carries out current-limiting protection, to further enhance the safety and reliability of circuit.
It is noted that in the present embodiment, the model E-501 of third diode D3, certainly, in practical applications, the three or two pole
Pipe D3 can also use diode of other models with similar functions.
In the present embodiment, which further includes the 4th resistance R4, one end of the 4th resistance R4 and DC power supply
VCC connections, the other end of the 4th resistance R4 are connect with the collector of the second triode Q2.4th resistance R4 is current-limiting resistance, is used
Current-limiting protection is carried out in the collector current to the second triode Q2, further to enhance the safety and reliability of circuit.
It is noted that in the present embodiment, the resistance value of the 4th resistance R4 is 30k Ω, certainly, in practical applications, the 4th resistance R4
Resistance value can adjust accordingly as the case may be.
In the present embodiment, which further includes the 5th resistance R5, one end and the three or three pole of the 5th resistance R5
The collector of pipe Q3 connects, the other end ground connection of the 5th resistance R5.5th resistance R5 is current-limiting resistance, for third transistor
The collector current of Q3 carries out current-limiting protection, to further enhance current limitation effect.It is noted that in the present embodiment, the 5th
The resistance value of resistance R5 is 45k Ω, and certainly, in practical applications, the resistance value of the 5th resistance R5 can carry out phase as the case may be
It should adjust.
In the present embodiment, above-mentioned microcontroller 1, D/A converter 6 and power supply circuit 10 are all made of structure in the prior art.
In short, in the present embodiment, due to being equipped with wireless communication module 5, the flexibility of communication mode can be increased.The power
Amplifying circuit 7 is relative to traditional power amplification circuit, and the component used is less, and circuit structure is relatively simple, in this way may be used
To reduce hardware cost.In addition, Current Limiting Diodes and coupled capacitor are equipped in the power amplification circuit 7, therefore the safety of circuit
Property and reliability are higher.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of sound equipment with control function, which is characterized in that including microcontroller, analog audio interface, optical fiber audio interface,
USB interface, wireless communication module, D/A converter, power amplification circuit, loud speaker, touching display screen and power supply circuit, it is described
Analog audio interface is connect with the microcontroller, for inputting analog audio signal, the optical fiber audio interface and the monolithic
Machine connection is used for input digital audio signal, and the USB interface is connect with the microcontroller, for receiving External memory equipment
Interior audio data, the wireless communication module is connect with the microcontroller, for being carried out wireless communication with mobile terminal, described
D/A converter is connect with the microcontroller, the digital audio and video signals for receiving the microcontroller are converted to analogue audio frequency letter
Number, the power amplification circuit is connect respectively with the D/A converter and microcontroller, for being carried out to the analog audio signal
Amplification, and amplified audio signal is sent to the loud speaker and is played out, the touching display screen and the microcontroller
Connection, the power supply circuit are connect with the microcontroller, for powering；
The power amplification circuit include voltage input end, voltage output end, DC power supply, the first triode, the second triode,
Third transistor, first resistor, second resistance, 3rd resistor, the first diode, the second diode, the first capacitance and the second electricity
Hold, the base stage of first triode is connect with one end of the voltage input end and first resistor respectively, the first resistor
The other end connect respectively with one end of first capacitance and voltage output end, the other end of first capacitance respectively with institute
The one end for stating second resistance is connected with the cathode of the second diode, the anode of second diode respectively with the DC power supply
Connected with the collector of the second triode, the base stage of second triode respectively with the other end of the second resistance and first
The anode of diode connects, the cathode of first diode respectively with the collector of first triode and the second capacitance
One end connects, and the other end of second capacitance is connect with the base stage of the third transistor, the transmitting of first triode
Pole is grounded by the 3rd resistor, the emitter of second triode and the emitter of third transistor with the voltage
Output end connects, the grounded collector of the third transistor, the model S-701 of second diode, second electricity
The capacitance of appearance is 620pF.
2. the sound equipment according to claim 1 with control function, which is characterized in that the power amplification circuit further includes
The anode of third diode, the third diode connects with one end of the other end of the first resistor and the first capacitance respectively
It connects, the model E-501 of the third diode.
3. the sound equipment according to claim 2 with control function, which is characterized in that the power amplification circuit further includes
One end of 4th resistance, the 4th resistance is connect with the DC power supply, the other end and described second of the 4th resistance
The collector of triode connects, and the resistance value of the 4th resistance is 30k Ω.
4. the sound equipment according to claim 3 with control function, which is characterized in that the power amplification circuit further includes
One end of 5th resistance, the 5th resistance is connect with the collector of the third transistor, the other end of the 5th resistance
The resistance value of ground connection, the 5th resistance is 45k Ω.
5. the sound equipment according to any one of claims 1 to 4, with control function, which is characterized in that the described 1st
Pole pipe is NPN type triode, and second triode is NPN type triode, and the third transistor is PNP type triode.
6. the sound equipment according to any one of claims 1 to 4, with control function, which is characterized in that the channel radio
Letter module be bluetooth module, WIFI module, gsm module, GPRS module, CDMA module, CDMA2000 modules, WCDMA modules,
TD-SCDMA modules, Zigbee module or LoRa modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201526.XU CN207766515U (en) | 2018-02-05 | 2018-02-05 | Sound equipment with control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820201526.XU CN207766515U (en) | 2018-02-05 | 2018-02-05 | Sound equipment with control function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207766515U true CN207766515U (en) | 2018-08-24 |
Family
ID=63179853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820201526.XU Active CN207766515U (en) | 2018-02-05 | 2018-02-05 | Sound equipment with control function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207766515U (en) |
-
2018
- 2018-02-05 CN CN201820201526.XU patent/CN207766515U/en active Active
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