CN206163119U - Buzzer control circuit , buzzing device and smoke ventilator - Google Patents
Buzzer control circuit , buzzing device and smoke ventilator Download PDFInfo
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- CN206163119U CN206163119U CN201621144073.9U CN201621144073U CN206163119U CN 206163119 U CN206163119 U CN 206163119U CN 201621144073 U CN201621144073 U CN 201621144073U CN 206163119 U CN206163119 U CN 206163119U
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- switch pipe
- buzzer
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- control circuit
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Abstract
The utility model discloses a buzzer control circuit, including control signal input, oscillating signal input, first switch tube, second switch pipe, electric capacity, first resistance, feeder ear and drive end, the control signal input with the control end of first switch tube is connected, the oscillating signal input with the control end of second switch pipe is connected, the feeder ear with the drive end is used for connecting bee calling organ. Correspondingly, the utility model also discloses a buzzing device and smoke ventilator. The utility model discloses a length of received control signal control buzzer sounds time through received oscillating signal control buzzer sounds's frequency, through the chord sound of electric capacity production hangover, realizes bee calling organ chord sound sound production simultaneously to simple structure, it is with low costs.
Description
Technical field
The utility model is related to electronic technology field, more particularly to a kind of buzzer control circuit, boom unit and oil pumping
Cigarette machine.
Background technology
Buzzer is a kind of electronics buzzer, audio signal can be converted into the pronunciation device of voice signal, using direct current
Power voltage supply, is all widely used in the household electrical appliance such as bank, the warning system of public security, electronic toy, smoke exhaust ventilator.
Traditional buzzer control circuit, directly to buzzer power switch signal is applied, and its sound for issuing is opened
Stop, frequency is single, in the prompt tone as electric equipment, sound is stiff ear-piercing, and cannot produce the sound of multiple frequencies
Section, does not reach the effect of chord prompt tone.
Prior art provides a kind of U.S. sound buzzer circuit that can produce polyphonic ring tone, as shown in figure 1, low frequency driving circuit
1 length that buzzing sound is controlled according to BUZL output signals, FREQUENCY CONTROL sound of the high frequency drive circuit 2 according to BUZH output signals
The scale of sound, the duration of the last or end syllable that piped by the size of electric capacity C1 and the size control of resistance R4, R5, R6.But should
Circuit structure is complicated, relatively costly.
The content of the invention
Technical problem to be solved in the utility model is, there is provided a kind of buzzer control circuit, using the buzzer
The boom unit of control circuit and the smoke exhaust ventilator using the boom unit, can control buzzer phonation time and audible frequency,
Realize buzzer polyphonic ring tone sounding, and simple structure, low cost.
In order to solve above-mentioned technical problem, the utility model provides a kind of buzzer control circuit, including control signal
Input, oscillator signal input, first switch pipe, second switch pipe, electric capacity, first resistor, feeder ear and drive end；
The control signal input is connected with the control end of the first switch pipe, the control end of the first switch pipe
It is connected with the first end of the electric capacity, the second end ground connection of the electric capacity；
The oscillator signal input is connected with the control end of the second switch pipe, the second end of the second switch pipe
Ground connection, the first end of the second switch pipe connects the second end of the first switch pipe, the first end of the first switch pipe
Connect the first end of the first resistor, the second end of the first resistor is used to connect power supply；
Second end of the first resistor is the feeder ear, and the first end of the first resistor is the drive end, institute
Stating feeder ear and the drive end is used to connect buzzer.
Further, the buzzer control circuit also includes second resistance and 3rd resistor；
The control signal input is connected by the second resistance with the control end of the first switch pipe, described to shake
Swing signal input part to be connected with the control end of the second switch pipe by the 3rd resistor.
Further, the buzzer control circuit also includes control process unit, and the control process unit includes control
Signal output part processed and the defeated end of oscillator signal；
The control signal output is connected with the control signal input, and the oscillator signal output end is shaken with described
Swing signal input part connection.
Further, the control process unit is single-chip microcomputer, and the control signal output is the I/O mouths of single-chip microcomputer,
The oscillator signal output end is the PWM delivery outlets of single-chip microcomputer.
Preferably, the first switch pipe is NPN type triode, the current collection extremely described first of the NPN type triode
The first end of switching tube, the second end of the extremely described first switch pipe of transmitting of the NPN type triode, the pole of the NPN type three
The base stage of pipe is the control end of the first switch pipe.
The second switch pipe is NPN type triode, the extremely described second switch pipe of current collection of the NPN type triode
First end, the second end of the extremely described second switch pipe of transmitting of the NPN type triode, the base stage of the NPN type triode
For the control end of the second switch pipe.
The buzzer control circuit that the utility model is provided, by oscillator signal input oscillator signal is received, while logical
Cross control signal input and receive control signal；When the control signal is high level, electric capacity charges, while opening by first
Close pipe and second switch pipe and produce the signal with the oscillator signal same frequency in drive end, for driving buzzer sounding；
When the control signal is low level, electric capacity is discharged, and in drive end output the electric current of shut-off is progressively smaller until, is used for
The polyphonic ring tone of hangover is formed, buzzer polyphonic ring tone sounding, and simple structure, low cost is realized.
Accordingly, the utility model additionally provides a kind of boom unit, including buzzer and buzzer control circuit, described
Buzzer control circuit is foregoing buzzer control circuit；
The feeder ear of the buzzer control circuit is connected with the power end of the buzzer, the buzzer control circuit
Drive end be connected with the controlled end of the buzzer.
The utility model additionally provides a kind of smoke exhaust ventilator, including power panel, and the power panel is provided with boom unit, institute
Boom unit is stated for foregoing boom unit.
Boom unit and the smoke exhaust ventilator using the boom unit that the utility model is provided, buzzer control circuit passes through
Feeder ear provides power supply for buzzer, drives buzzer to send identical with the oscillator signal by drive end outputting oscillation signal
The sound of frequency, while forming the polyphonic ring tone of hangover using electric capacity, realizes buzzer polyphonic ring tone sounding, and simple structure,
Low cost.
Description of the drawings
Fig. 1 is the circuit theory diagrams of the U.S. sound buzzer circuit that prior art is provided；
Fig. 2 is a kind of circuit theory diagrams of the one embodiment for buzzer control circuit that the utility model is provided；
Fig. 3 is a kind of circuit theory diagrams of second embodiment of buzzer control circuit that the utility model is provided；
Fig. 4 is a kind of circuit theory diagrams of the 3rd embodiment of buzzer control circuit that the utility model is provided；
Fig. 5 is a kind of circuit theory diagrams of the one embodiment for boom unit that the utility model is provided.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
It is a kind of circuit theory of the one embodiment for buzzer control circuit that the utility model is provided referring to Fig. 2
Figure.
The utility model embodiment provides a kind of buzzer control circuit, including control signal input BEEP_EN, vibration
Signal input part BEEP_PWM, first switch pipe Q1, second switch pipe Q2, electric capacity E, first resistor RA1, feeder ear BP1 and drive
Moved end BP2；
Control signal input BEEP_EN is connected with the control end of first switch pipe Q1, the first switch pipe Q1
Control end be connected with the first end of electric capacity E, second end of electric capacity E ground connection；
The oscillator signal input BEEP_PWM is connected with the control end of second switch pipe Q2, the second switch pipe Q2
The second end ground connection, the first end of the second switch pipe Q2 connects second end of first switch pipe Q1, the first switch pipe
The first end of Q1 connects the first end of first resistor RA1, and the second end of first resistor RA1 is used to connect power supply；
Second end of first resistor RA1 is feeder ear BP1, and the first end of first resistor RA1 is drive end
BP2, the feeder ear BP1 and drive end BP2 are used to connect buzzer.
In the specific implementation, oscillator signal is received by oscillator signal input BEEP_PWM, while passing through control signal
Input BEEP_EN receives control signal；When the control signal is high level, electric capacity E charges, if the now vibration letter
Number positive half period is in, then first switch pipe Q1 and second switch pipe Q2 are turned on, if the oscillator signal is in negative half-cycle,
First switch pipe Q1 and second switch pipe Q2 is turned off, so as to produce the letter with the oscillator signal same frequency in drive end BP2
Number, for driving buzzer to send the sound of same frequency；When the control signal is low level, electric capacity E electric discharges are continued as
First switch pipe Q1 provides conducting voltage, and with the electric discharge of electric capacity E, first switch pipe Q1 is by saturation region into amplification region until entering
Enter cut-off region, so as to be progressively smaller until the electric current of shut-off in drive end BP2 outputs, the polyphonic ring tone of hangover is formed, so as to realize
Buzzer polyphonic ring tone sounding, simple structure, low cost.Wherein, the size of electric capacity E is adjusted, the time of hangover sound can be adjusted
Length.
It is a kind of circuit theory of second embodiment of buzzer control circuit that the utility model is provided referring to Fig. 3
Figure.As shown in figure 3, the buzzer control circuit also includes second resistance RA2 and 3rd resistor RA3；The control signal is defeated
Enter to hold BEEP_EN to be connected with the control end of first switch pipe Q1 by second resistance RA2, the oscillator signal input BEEP_
PWM is connected by 3rd resistor RA3 with the control end of second switch pipe Q2.
It is a kind of circuit theory of the 3rd embodiment of buzzer control circuit that the utility model is provided referring to Fig. 4
Figure.As shown in figure 4, the buzzer control circuit also includes control process unit 1, the control process unit 1 includes control
The signal output part a and defeated end b of oscillator signal；
Control signal output a is connected with control signal input BEEP_EN, oscillator signal output end b with
Oscillator signal input BEEP_PWM connects.
In the specific implementation, control process unit 1 is defeated to control signal by oscillator signal output end a outputting oscillation signal
Enter to hold BEEP_EN, while giving oscillator signal input BEEP_PWM by control signal output b output control signal.
Further, the control process unit 1 is single-chip microcomputer, and control signal output a is the I/O of single-chip microcomputer
Mouthful, oscillator signal output end b is the PWM delivery outlets of single-chip microcomputer.
In the present embodiment, the first switch pipe Q1 is NPN type triode, and the current collection extremely first of NPN type triode is opened
The first end of pipe Q1, transmitting extremely second end of first switch pipe Q1 of NPN type triode are closed, the base stage of NPN type triode is
The control end of first switch pipe Q1.
The second switch pipe Q2 is NPN type triode, the current collection extremely the first of second switch pipe Q2 of NPN type triode
End, transmitting extremely second end of second switch pipe Q2 of NPN type triode, the base stage of NPN type triode is second switch pipe Q2
Control end.
It is a kind of circuit theory diagrams of the one embodiment for boom unit that the utility model is provided referring to Fig. 5.
The utility model provides a kind of boom unit, including buzzer BP and buzzer control circuit 2, the buzzer control
Buzzer control circuit described in a kind of any embodiment of buzzer control circuit that circuit processed 2 is provided for the utility model；
The power end IN of the feeder ear BP1 and buzzer BP of the buzzer control circuit 2 is connected, the buzzer control
The controlled end CTR of the drive end BP2 and buzzer BP of circuit 2 is connected.
The utility model additionally provides a kind of smoke exhaust ventilator, including power panel, and the power panel is provided with boom unit, institute
Boom unit is stated for foregoing boom unit.
In the specific implementation, buzzer control circuit 2 provides power supply by feeder ear BP1 for buzzer BP, while buzzing
Control process unit 1 in device control circuit 2 is by oscillator signal output end a outputting oscillation signal to control signal input
BEEP_EN, by control signal output b output control signal oscillator signal input BEEP_PWM is given, when the control letter
Number for high level when, electric capacity E charges, if now the oscillator signal is in positive half period, first switch pipe Q1 and second opens
Close pipe Q2 conducting, if the oscillator signal is in negative half-cycle, first switch pipe Q1 and second switch pipe Q2 is turned off, so as to
Drive end BP2 produces the signal with the oscillator signal same frequency and is sent to the controlled end CTR of buzzer BP, drives buzzing
Device BP sends the sound of same frequency；When the control signal is low level, electric capacity E electric discharges continue as first switch pipe Q1
Conducting voltage is provided, with the electric discharge of electric capacity E, first switch pipe Q1 enters amplification region until entering cut-off region by saturation region, from
And the electric current of shut-off is progressively smaller until in drive end BP2 outputs, the polyphonic ring tone of hangover is formed, it is achieved thereby that buzzer chord
Sound sounding, simple structure, low cost.Wherein, the size of electric capacity E is adjusted, the time span of hangover sound can be adjusted.
It should be noted that in the buzzer control circuit that provides of above-described embodiment, first switch pipe Q1 and second switch
Pipe Q2 is NPN type triode, a kind of embodiment only therein, in other embodiments, first switch pipe Q1 and the
Two switching tube Q2 may be replaced by PNP type triode or other three ports for control switching devices or it derives from device, different
In application scenario, power consumption, cost, driving power depending on side circuit and with the drive control component parameter matching of switching tube etc.
Reasonable selection and setting are required, the conventional design process that switching tube is prior art is selected and arrange, here is not repeated.
Buzzer control circuit, the boom unit using the buzzer control circuit and the employing that the utility model is provided should
The smoke exhaust ventilator of boom unit, by oscillator signal input oscillator signal is received, while being received by control signal input
Control signal；When the control signal is high level, electric capacity charges, while being driven by first switch pipe and second switch pipe
Moved end produces the signal with the oscillator signal same frequency, for driving buzzer sounding；When the control signal is low electricity
At ordinary times, electric capacity is discharged, and in drive end output the electric current of shut-off is progressively smaller until, real for forming the polyphonic ring tone of hangover
Buzzer polyphonic ring tone sounding, and simple structure, low cost are showed.
The above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of without departing from the utility model principle, some improvement and deformation can also be made, these improve and become
Shape is also considered as protection domain of the present utility model.
Claims (8)
1. a kind of buzzer control circuit, it is characterised in that open including control signal input, oscillator signal input, first
Guan Guan, second switch pipe, electric capacity, first resistor, feeder ear and drive end；
The control signal input is connected with the control end of the first switch pipe, the control end of the first switch pipe and institute
State the first end connection of electric capacity, the second end ground connection of the electric capacity；
The oscillator signal input is connected with the control end of the second switch pipe, the second termination of the second switch pipe
Ground, the first end of the second switch pipe connects the second end of the first switch pipe, and the first end of the first switch pipe connects
The first end of the first resistor is connect, the second end of the first resistor is used to connect power supply；
Second end of the first resistor is the feeder ear, and the first end of the first resistor is the drive end, the confession
Electric end and the drive end are used to connect buzzer.
2. buzzer control circuit as claimed in claim 1, it is characterised in that the buzzer control circuit also includes second
Resistance and 3rd resistor；
The control signal input is connected by the second resistance with the control end of the first switch pipe, the vibration letter
Number input is connected by the 3rd resistor with the control end of the second switch pipe.
3. buzzer control circuit as claimed in claim 1, it is characterised in that the buzzer control circuit also includes control
Processing unit, the control process unit includes control signal output and the defeated end of oscillator signal；
The control signal output is connected with the control signal input, and the oscillator signal output end and the vibration are believed
The connection of number input.
4. buzzer control circuit as claimed in claim 3, it is characterised in that the control process unit is single-chip microcomputer, institute
The I/O mouths that control signal output is single-chip microcomputer are stated, the oscillator signal output end is the PWM delivery outlets of single-chip microcomputer.
5. the buzzer control circuit as described in any one of Claims 1-4, it is characterised in that the first switch pipe is NPN
Type triode, the first end of the extremely described first switch pipe of current collection of the NPN type triode, the NPN type triode send out
Emitter-base bandgap grading is the second end of the first switch pipe, and the base stage of the NPN type triode is the control end of the first switch pipe.
6. the buzzer control circuit as described in any one of Claims 1-4, it is characterised in that the second switch pipe is NPN
Type triode, the first end of the extremely described second switch pipe of current collection of the NPN type triode, the NPN type triode send out
Emitter-base bandgap grading is the second end of the second switch pipe, and the base stage of the NPN type triode is the control end of the second switch pipe.
7. a kind of boom unit, it is characterised in that including buzzer and buzzer control circuit, the buzzer control circuit is
Buzzer control circuit as described in any one of claim 1 to 6；
The feeder ear of the buzzer control circuit is connected with the power end of the buzzer, the drive of the buzzer control circuit
Moved end is connected with the controlled end of the buzzer.
8. a kind of smoke exhaust ventilator, including power panel, it is characterised in that the power panel is provided with boom unit, the buzzing dress
It is set to boom unit as claimed in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144073.9U CN206163119U (en) | 2016-10-20 | 2016-10-20 | Buzzer control circuit , buzzing device and smoke ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144073.9U CN206163119U (en) | 2016-10-20 | 2016-10-20 | Buzzer control circuit , buzzing device and smoke ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206163119U true CN206163119U (en) | 2017-05-10 |
Family
ID=58653911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621144073.9U Active CN206163119U (en) | 2016-10-20 | 2016-10-20 | Buzzer control circuit , buzzing device and smoke ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206163119U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022579A (en) * | 2018-01-16 | 2018-05-11 | 深圳和而泰小家电智能科技有限公司 | Sounding regulating device, adjusting method and the household electrical appliance of a kind of buzzer |
| CN108780636A (en) * | 2017-09-15 | 2018-11-09 | 深圳和而泰智能控制股份有限公司 | Buzzer control circuit and buzzer |
| CN109545178A (en) * | 2019-01-30 | 2019-03-29 | 中科芯集成电路股份有限公司 | A kind of double control buzzer drive circuit |
-
2016
- 2016-10-20 CN CN201621144073.9U patent/CN206163119U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108780636A (en) * | 2017-09-15 | 2018-11-09 | 深圳和而泰智能控制股份有限公司 | Buzzer control circuit and buzzer |
| WO2019051815A1 (en) * | 2017-09-15 | 2019-03-21 | 深圳和而泰智能控制股份有限公司 | Control circuit for buzzer, and buzzer |
| CN108022579A (en) * | 2018-01-16 | 2018-05-11 | 深圳和而泰小家电智能科技有限公司 | Sounding regulating device, adjusting method and the household electrical appliance of a kind of buzzer |
| CN109545178A (en) * | 2019-01-30 | 2019-03-29 | 中科芯集成电路股份有限公司 | A kind of double control buzzer drive circuit |
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