CN208691540U - A kind of buzzer and its it can realize the single-chip microcontroller for selecting acoustic control - Google Patents
A kind of buzzer and its it can realize the single-chip microcontroller for selecting acoustic control Download PDFInfo
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- CN208691540U CN208691540U CN201820974074.9U CN201820974074U CN208691540U CN 208691540 U CN208691540 U CN 208691540U CN 201820974074 U CN201820974074 U CN 201820974074U CN 208691540 U CN208691540 U CN 208691540U
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- circuit
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- chip microcontroller
- buzzer
- acoustic control
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Abstract
The utility model discloses the single-chip microcontroller that a kind of buzzer and its can realize selects acoustic control, single-chip microcontroller includes multiple pins, and the pin includes second pin and the output pin for exporting sound, and the second pin is connected with external sound collecting end.The utility model generates audio signal using single-chip microcontroller, enhances the stability of product, substantially increases the diversity of buzzing music, and structure is simple, and sound quality is good, is not easy to generate heat, improves service life.
Description
Technical field
The utility model relates to technical fields, and in particular to a kind of buzzer and its can realize the single-chip microcontroller for selecting acoustic control.
Background technique
Currently, the source of sound of common sound prompting device, mainly uses semiconductor components and devices circuit or music IC (music collections
At circuit) it generates, it has the following disadvantages:
1, the sound wave that semiconductor components and devices circuit is worked it out is essentially sine wave, is not easily adjustable, and sounding multiplicity
Property range it is small, only convenient for designing better simply single-frequency or periodically variable sound signal waveform, and the positive and negative ratio of waveform is difficult to
Control, sound frequency change with operating voltage and are changed；Due to being sine wave, rise and fall overlong time, later period signal is put
Big transistor is easy that transistor is made to generate heat, causes the degradation of device often in the linear amplification region of big power consumption；
2, the sound wave of music IC is that square wave, i.e. high level or low level time are identical, this is resulted in sound source signal
When frequency is low, the corresponding length of high level time, later period output transistor turn-on time is long, and device conduction time is too long, easily
Device heating phenomenon is caused, causes the degradation of device, while the volume of sounding is relatively high；However when high-frequency,
High level time is short, and turn-on time is shorter, while the volume of sounding is lower, causes the sound intensity issued when different frequency not
Together, and the area of music IC selected songs is sex-limited, and many music are not all made into music IC, and the existing song in market can only be selected to produce
Product are unfavorable for the exploitation of new product.
In view of this, being badly in need of improving the existing single-chip microcontroller that can be achieved to select acoustic control, to improve music diversity.
Utility model content
Technical problem to be solved in the utility model is that there are music is more for the existing single-chip microcontroller that can be achieved to select acoustic control
The problem of sample difference.
In order to solve the above-mentioned technical problem, technical solution used by the utility model is to provide one kind and can be achieved to select acoustic control
The single-chip microcontroller of system, which is characterized in that including multiple pins, the pin includes that second pin and the output for exporting sound are drawn
Foot, the second pin are connected with external sound collecting end.
The utility model additionally provides a kind of buzzer, the achievable single-chip microcontroller for selecting acoustic control including above structure, also
Including power circuit, operation circuit, amplifying circuit and phonation circuit, one end of the single-chip microcontroller is connected to the power circuit,
The signal for receiving operation circuit, is then sent in sequence to amplifying circuit and phonation circuit for signal.
In another preferred embodiment, the power circuit includes setting being sequentially connected in series between a positive electrode and a negative electrode
First resistor and diode, the first pin of the single-chip microcontroller be arranged between the first resistor and the diode, institute
It states and is equipped with capacitor between the first pin and cathode, the 8th pin is connected to cathode.
In another preferred embodiment, the operation circuit includes being arranged in the second pin and the sound collecting end
Between second resistance and the second pin and cathode between 3rd resistor.
In another preferred embodiment, the amplifying circuit includes the 4th resistance connecting with the output pin,
The other end of 4th resistance is connected with the base stage of triode, and the emitter ground connection of the triode, collector passes through display
Lamp is connect with anode.
In another preferred embodiment, the phonation circuit includes the fusing for being separately positioned on the both ends of the light bulb
Device is equipped with piezo between the other end of two fuses.
In another preferred embodiment, on circuit boards, the power circuit is arranged in institute for the single-chip microcontroller setting
The back side of circuit board is stated, the front of the circuit board is arranged in the amplifying circuit and phonation circuit.
In another preferred embodiment, the outside of the single-chip microcontroller is equipped with shell, and the outside of the shell is equipped with pair
The fixation hole of title.
Compared with prior art, the utility model generates audio signal using single-chip microcontroller, enhances the stabilization of product
Property, the diversity of buzzing music is substantially increased, structure is simple, and sound quality is good, is not easy to generate heat, and improves service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the circuit board of the utility model；
Fig. 3 is the circuit diagram of the utility model.
Specific embodiment
The utility model provides a kind of single-chip microcontroller that can be achieved to select acoustic control, generates audio signal using single-chip microcontroller,
The stability of product is enhanced, the diversity of buzzing music is substantially increased, structure is simple, and sound quality is good, is not easy to generate heat, improve
Service life.The utility model is described in detail with specific embodiment with reference to the accompanying drawings of the specification.
As shown in figure 3, a kind of single-chip microcontroller 30 that can be achieved to select acoustic control provided by the utility model, including multiple pins,
Pin includes second pin and the output pin for exporting sound, and second pin is connected with external sound collecting end 50.
The utility model additionally provides a kind of buzzer, the achievable single-chip microcontroller 30 for selecting acoustic control including above structure,
It further include power circuit 21, operation circuit, amplifying circuit and phonation circuit, one end of single-chip microcontroller 30 is connected to power circuit 21,
The signal for receiving operation circuit, is then sent in sequence to amplifying circuit and phonation circuit for signal.
Single-chip microcontroller 30 works out a variety of sound sources, and user controls the voltage levels of second pin, Jin Erxuan by sound collecting end 50
Different sound sources is selected, output pin output amplifies audio using amplifying circuit, and final phonation circuit makes a sound.
Power circuit 21 includes the first resistor R1 being sequentially connected in series and diode D of setting between a positive electrode and a negative electrode, single
First pin of piece machine 30 is arranged between first resistor R1 and diode D, and capacitor C is equipped between the first pin and cathode, the
Eight pins are connected to cathode.Operation circuit includes the second resistance R2, Yi Ji being arranged between second pin and sound collecting end 50
3rd resistor R3 between two pins and cathode.The effect of first resistor R1, second resistance R2, diode D and capacitor C be all for
Reduction operating current, improves the stability of circuit.
Amplifying circuit includes the 4th resistance R4 connecting with output pin, the other end of the 4th resistance R4 and triode Q's
Base stage is connected, and the emitter ground connection of triode Q, collector is connect by display lamp L with anode.Triode Q can be effectively by signal
It amplifies, sensitivity is strong.
Phonation circuit includes the fuse L for being separately positioned on the both ends of light bulb, is equipped with bee between the other end of two fuse L
Ring piece 40.Fuse L can effectively place that electric current is excessive to be caused to overheat, and improve stability and service life.
As shown in Fig. 2, single-chip microcontroller 30 is arranged on circuit board 20, the back side of circuit board 20 is arranged in power circuit 21, puts
The front of circuit board 20 is arranged in big circuit and phonation circuit.The two sides space of circuit board 20 is all sufficiently used in this way, is improved
The distribution effects of component.
As shown in Figure 1, the outside of single-chip microcontroller 30 is equipped with shell 10, the outside of shell 10 is equipped with symmetrical fixation hole 11.Gu
Determining hole 11 is set as needed the utility model at the desired position.
The utility model generates audio signal using single-chip microcontroller, enhances the stability of product, substantially increases buzzing
The diversity of music, structure is simple, and sound quality is good, is not easy to generate heat, improves service life.
The utility model is not limited to above-mentioned preferred forms, and anyone should learn that the enlightenments in the utility model
Under the structure change made, it is all that there is same or similar technical solution with the utility model, each fall within the utility model
Within protection scope.
Claims (7)
1. a kind of single-chip microcontroller that can be achieved to select acoustic control, which is characterized in that including multiple pins, the pin includes second pin
With the output pin for exporting sound, the second pin is connected with external sound collecting end.
2. a kind of buzzer, which is characterized in that the single-chip microcontroller of acoustic control is selected including that can realize as defined in claim 1,
It further include power circuit, operation circuit, amplifying circuit and phonation circuit, one end of the single-chip microcontroller and the power circuit connect
It is logical, the signal of the operation circuit is received, signal is then sent in sequence to the amplifying circuit and the phonation circuit, it is described
Operation circuit includes the second resistance being arranged between the second pin and the sound collecting end and the second pin and bears
3rd resistor between pole.
3. buzzer according to claim 2, which is characterized in that the power circuit include setting anode and cathode it
Between the first resistor being sequentially connected in series and diode, the first pin of the single-chip microcontroller be arranged in the first resistor and described two
Between pole pipe, capacitor is equipped between first pin and cathode, the 8th pin is connected to cathode.
4. buzzer according to claim 2, which is characterized in that the amplifying circuit includes connecting with the output pin
The 4th resistance, the other end of the 4th resistance is connected with the base stage of triode, the emitter ground connection of the triode, current collection
Pole is connect by display lamp with anode.
5. buzzer according to claim 4, which is characterized in that the phonation circuit includes be separately positioned on light bulb two
The fuse at end is equipped with piezo between the other end of two fuses.
6. buzzer according to claim 2, which is characterized in that the single-chip microcontroller is arranged on circuit boards, the power supply
The back side of the circuit board is arranged in circuit, and the front of the circuit board is arranged in the amplifying circuit and phonation circuit.
7. buzzer according to claim 6, which is characterized in that the outside of the single-chip microcontroller is equipped with shell, the shell
Outside be equipped with symmetrical fixation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820974074.9U CN208691540U (en) | 2018-06-22 | 2018-06-22 | A kind of buzzer and its it can realize the single-chip microcontroller for selecting acoustic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820974074.9U CN208691540U (en) | 2018-06-22 | 2018-06-22 | A kind of buzzer and its it can realize the single-chip microcontroller for selecting acoustic control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208691540U true CN208691540U (en) | 2019-04-02 |
Family
ID=65879073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820974074.9U Active CN208691540U (en) | 2018-06-22 | 2018-06-22 | A kind of buzzer and its it can realize the single-chip microcontroller for selecting acoustic control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208691540U (en) |
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2018
- 2018-06-22 CN CN201820974074.9U patent/CN208691540U/en active Active
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