CN109088628A - Control circuit for audio-switch - Google Patents
Control circuit for audio-switch Download PDFInfo
- Publication number
- CN109088628A CN109088628A CN201710448884.0A CN201710448884A CN109088628A CN 109088628 A CN109088628 A CN 109088628A CN 201710448884 A CN201710448884 A CN 201710448884A CN 109088628 A CN109088628 A CN 109088628A
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- China
- Prior art keywords
- tube
- nmos tube
- grid
- pmos tube
- pmos
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003321 amplification Effects 0.000 claims abstract description 27
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 27
- 239000003990 capacitor Substances 0.000 claims description 21
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000032683 aging Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000003111 delayed effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/6871—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor
- H03K17/6874—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors the output circuit comprising more than one controlled field-effect transistor in a symmetrical configuration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/94005—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated activated by voice or sound
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Abstract
The invention belongs to electronic circuit technology fields, more particularly to a kind of control circuit for audio-switch.Circuit provided by the invention mainly includes sound transducer, analog-digital converter and switch controller, which is characterized in that further includes signal amplification circuit；The input terminal of the output termination signal amplification circuit of the sound transducer；The input terminal of the output termination analog-digital converter of the signal amplification circuit；The input terminal of the output termination switch controller of the analog-digital converter；The signal amplification circuit includes being sequentially connected the biasing circuit connect, first order amplifying circuit and second level amplifying circuit.Beneficial effects of the present invention are to greatly improve the sensitivity of audio-switch, have delayed audio-switch because the problem of degree of detection declines caused by aging.The present invention especially adaptability is in audio-switch.
Description
Technical field
The invention belongs to electronic circuit technology fields, more particularly to a kind of control circuit for audio-switch.
Background technique
Audio-switch has obtained very extensive application, especially residential building building because of the practicality and convenience at present
Street lamps control in ladder.The principle of audio-switch is incited somebody to action by sound transducer collected sound signal, then by analog-digital converter
Control switch is opened after signal is converted to the identifiable digital signal of switch controller.The principle of currently used sound transducer
It is by the capacitor to sound sensitive, its capacitor changes to generate small voltage under the influence of sound, by turning
It is identified after changing.But in actual use, to the capacitor of sound sensitive after use after a period of time its to the quick of sound
Sensitivity can be reduced seriously, and the voltage generated under the influence of voice signal is very small and is difficult to, and cause often to occur
User needs very stamping one's foot or clapping the hands and generate biggish sound and could open audio-switch firmly.This can not only bring to user
It is greatly inconvenient, while the huge noise generated also affects other people.Therefore the sensitivity of current audio-switch exists
Larger problem.
Summary of the invention
It is to be solved by this invention, aiming at sensitivity problem existing for current audio-switch, propose that one kind is used for
The control circuit of audio-switch.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of control circuit for audio-switch, including sound transducer, analog-digital converter and switch controller, it is special
Sign is, further includes signal amplification circuit；The input terminal of the output termination signal amplification circuit of the sound transducer；The letter
The input terminal of the output termination analog-digital converter of number amplifying circuit；The output of the analog-digital converter terminates the defeated of switch controller
Enter end；The signal amplification circuit includes being sequentially connected the biasing circuit connect, first order amplifying circuit and second level amplifying circuit；
The first order amplifying circuit includes the first PMOS tube M0, the second PMOS tube M1, third PMOS tube M2, the 4th PMOS
Pipe M11, the 5th PMOS tube M12, the first NMOS tube M3, the second NMOS tube M4, third NMOS tube M5, the 4th NMOS tube M6, the 5th
NMOS tube M7, the 6th NMOS tube M8, the 7th NMOS tube M9, the 8th NMOS tube M10 and first capacitor Cm；
The second level amplifying circuit includes the 6th PMOS tube M13, the 7th PMOS tube M15, the 9th NMOS tube M14 and second
Capacitor Cb；
The biasing circuit includes the 8th PMOS tube Mb0, the 9th PMOS tube Mb1, the tenth NMOS tube Mb2, the 11st NMOS
Pipe Mb3 and current source；
Source electrode, the source electrode of the 5th PMOS tube M12, the 7th PMOS tube of the source electrode of first PMOS tube M0, the 4th PMOS tube M11
The source electrode of the source electrode of M15, the source electrode of the 8th PMOS tube Mb0 and the 9th PMOS tube Mb1 meets power vd D；
The grid of 8th PMOS tube Mb0 and drain electrode, the grid of the 9th PMOS tube Mb1, the first PMOS tube M0 grid and electricity
The forward end in stream source connects；
The drain electrode of first PMOS tube M0 is connect with the source electrode of the source electrode of the second PMOS tube M1 and third PMOS tube M2, and second
The grid of PMOS tube M1 is the positive input of signal amplification circuit, and the grid of third PMOS tube M2 is the anti-of signal amplification circuit
To input terminal；
The drain electrode of second PMOS tube M1 and one end of first capacitor Cm, the drain electrode of the first NMOS tube M3, the second NMOS tube M4
Grid, third NMOS tube M5 drain and gate and the 4th NMOS tube M6 grid connection；
Drain electrode and the drain electrode of the second NMOS tube M4, the grid of the first NMOS tube M3, the 5th NMOS tube of third PMOS tube M2
The connection of the grid of the drain and gate of M7 and the 6th NMOS tube M8；
The source electrode of the 7th NMOS tube M9 of drain electrode connection of 4th NMOS tube M6, the grid and the 8th NMOS of the 7th NMOS tube M9
The drain and gate connection of the grid of pipe M10, the tenth NMOS tube Mb2, the drain electrode of the 7th NMOS tube M9 is with the 4th PMOS tube M11's
The connection of the grid of drain and gate and the 5th PMOS tube M12；
The drain electrode of 5th PMOS tube M12 connects the grid and second of the drain electrode of the 8th NMOS tube M10, the 7th PMOS tube M15
One end of capacitor Cb, the drain electrode connection of the source electrode and the 6th NMOS tube M8 of the 8th NMOS tube M10；
The grid of the other end of second capacitor Cb and the grid of the 6th PMOS tube M13 and drain electrode and the 9th NMOS tube M14
Connection；
The source of the source electrode of 6th PMOS tube M13 and the grid of the 11st NMOS tube Mb3 and drain electrode and the tenth NMOS tube Mb2
Pole connection；
Drain electrode, the drain electrode of the 7th PMOS tube M15 and the other end of first capacitor Cm of 9th NMOS tube M14 is connected to
The output end of signal amplification circuit；
The backward end of current source, the source electrode of the 11st NMOS tube Mb3, the source electrode of the first NMOS tube M3, the second NMOS tube M4
Source electrode, the source electrode of third NMOS tube M5, the source electrode of the 4th NMOS tube M6, the 5th NMOS tube M7 source electrode, the 6th NMOS tube M8
Source electrode and the 9th NMOS tube M14 source grounding.
Beneficial effects of the present invention are to greatly improve the sensitivity of audio-switch, have delayed audio-switch because of aging
Caused by degree of detection decline the problem of.
Detailed description of the invention
Fig. 1 is logical construction schematic diagram of the invention；
Fig. 2 is the circuit structure diagram of signal amplification circuit in the present invention.
Specific embodiment
Fig. 1 is a kind of control circuit for audio-switch of the invention, including sound transducer, analog-digital converter and is opened
Close controller, which is characterized in that further include signal amplification circuit；The output termination signal amplification circuit of the sound transducer
Input terminal；The input terminal of the output termination analog-digital converter of the signal amplification circuit；The output of the analog-digital converter terminates
The input terminal of switch controller；The signal amplification circuit include be sequentially connected the biasing circuit connect, first order amplifying circuit and
Second level amplifying circuit；
As shown in Fig. 2, the first order amplifying circuit includes the first PMOS tube M0, the second PMOS tube M1, third PMOS tube
M2, the 4th PMOS tube M11, the 5th PMOS tube M12, the first NMOS tube M3, the second NMOS tube M4, third NMOS tube M5, the 4th
NMOS tube M6, the 5th NMOS tube M7, the 6th NMOS tube M8, the 7th NMOS tube M9, the 8th NMOS tube M10 and first capacitor Cm；
The second level amplifying circuit includes the 6th PMOS tube M13, the 7th PMOS tube M15, the 9th NMOS tube M14 and second
Capacitor Cb；
The biasing circuit includes the 8th PMOS tube Mb0, the 9th PMOS tube Mb1, the tenth NMOS tube Mb2, the 11st NMOS
Pipe Mb3 and current source；
Source electrode, the source electrode of the 5th PMOS tube M12, the 7th PMOS tube of the source electrode of first PMOS tube M0, the 4th PMOS tube M11
The source electrode of the source electrode of M15, the source electrode of the 8th PMOS tube Mb0 and the 9th PMOS tube Mb1 meets power vd D；
The grid of 8th PMOS tube Mb0 and drain electrode, the grid of the 9th PMOS tube Mb1, the first PMOS tube M0 grid and electricity
The forward end in stream source connects；
The drain electrode of first PMOS tube M0 is connect with the source electrode of the source electrode of the second PMOS tube M1 and third PMOS tube M2, and second
The grid of PMOS tube M1 is the positive input of signal amplification circuit, and the grid of third PMOS tube M2 is the anti-of signal amplification circuit
To input terminal；
The drain electrode of second PMOS tube M1 and one end of first capacitor Cm, the drain electrode of the first NMOS tube M3, the second NMOS tube M4
Grid, third NMOS tube M5 drain and gate and the 4th NMOS tube M6 grid connection；
Drain electrode and the drain electrode of the second NMOS tube M4, the grid of the first NMOS tube M3, the 5th NMOS tube of third PMOS tube M2
The connection of the grid of the drain and gate of M7 and the 6th NMOS tube M8；
The source electrode of the 7th NMOS tube M9 of drain electrode connection of 4th NMOS tube M6, the grid and the 8th NMOS of the 7th NMOS tube M9
The drain and gate connection of the grid of pipe M10, the tenth NMOS tube Mb2, the drain electrode of the 7th NMOS tube M9 is with the 4th PMOS tube M11's
The connection of the grid of drain and gate and the 5th PMOS tube M12；
The drain electrode of 5th PMOS tube M12 connects the grid and second of the drain electrode of the 8th NMOS tube M10, the 7th PMOS tube M15
One end of capacitor Cb, the drain electrode connection of the source electrode and the 6th NMOS tube M8 of the 8th NMOS tube M10；
The grid of the other end of second capacitor Cb and the grid of the 6th PMOS tube M13 and drain electrode and the 9th NMOS tube M14
Connection；
The source of the source electrode of 6th PMOS tube M13 and the grid of the 11st NMOS tube Mb3 and drain electrode and the tenth NMOS tube Mb2
Pole connection；
Drain electrode, the drain electrode of the 7th PMOS tube M15 and the other end of first capacitor Cm of 9th NMOS tube M14 is connected to
The output end of signal amplification circuit；
The backward end of current source, the source electrode of the 11st NMOS tube Mb3, the source electrode of the first NMOS tube M3, the second NMOS tube M4
Source electrode, the source electrode of third NMOS tube M5, the source electrode of the 4th NMOS tube M6, the 5th NMOS tube M7 source electrode, the 6th NMOS tube M8
Source electrode and the 9th NMOS tube M14 source grounding.
The operation principle of the present invention is that:
After sound transducer generates small voltage under the action of voice signal, the forward direction for being input to signal amplification circuit is defeated
Enter end, the negative input of signal amplification circuit connects reference voltage or be directly grounded line, and signal amplification circuit is by the micro- of input
Small voltage signal is effectively amplified, to make the atomic small voltage generated originally become biggish voltage, so as to sound
Degree of detection is greatly improved；Sound transducer generate voltage signal after signal amplification circuit of the invention amplifies, then
Being converted to analog-digital converter can recognize that voltage signal, control switch controller are opened.
Claims (1)
1. being used for the control circuit of audio-switch, including sound transducer, analog-digital converter and switch controller, feature exist
In further including signal amplification circuit；The input terminal of the output termination signal amplification circuit of the sound transducer；The signal is put
The input terminal of the output termination analog-digital converter of big circuit；The input of the output termination switch controller of the analog-digital converter
End；The signal amplification circuit includes being sequentially connected the biasing circuit connect, first order amplifying circuit and second level amplifying circuit；
The first order amplifying circuit includes the first PMOS tube M0, the second PMOS tube M1, third PMOS tube M2, the 4th PMOS tube
M11, the 5th PMOS tube M12, the first NMOS tube M3, the second NMOS tube M4, third NMOS tube M5, the 4th NMOS tube M6, the 5th
NMOS tube M7, the 6th NMOS tube M8, the 7th NMOS tube M9, the 8th NMOS tube M10 and first capacitor Cm；
The second level amplifying circuit includes the 6th PMOS tube M13, the 7th PMOS tube M15, the 9th NMOS tube M14 and the second capacitor
Cb；
The biasing circuit includes the 8th PMOS tube Mb0, the 9th PMOS tube Mb1, the tenth NMOS tube Mb2, the 11st NMOS tube Mb3
And current source；
The source electrode of first PMOS tube M0, the source electrode of the 4th PMOS tube M11, the 5th PMOS tube M12 source electrode, the 7th PMOS tube M15
Source electrode, the source electrode of the 8th PMOS tube Mb0 and the source electrode of the 9th PMOS tube Mb1 meet power vd D；
The grid of 8th PMOS tube Mb0 and drain electrode, the grid of the 9th PMOS tube Mb1, the first PMOS tube M0 grid and current source
Forward end connection；
The drain electrode of first PMOS tube M0 is connect with the source electrode of the source electrode of the second PMOS tube M1 and third PMOS tube M2, the second PMOS tube
The grid of M1 is the positive input of signal amplification circuit, and the grid of third PMOS tube M2 is the reversed input of signal amplification circuit
End；
The drain electrode of second PMOS tube M1 and one end of first capacitor Cm, the drain electrode of the first NMOS tube M3, the second NMOS tube M4 grid
The grid of pole, the drain and gate of third NMOS tube M5 and the 4th NMOS tube M6 connects；
The drain electrode of third PMOS tube M2 and the drain electrode of the second NMOS tube M4, the grid of the first NMOS tube M3, the 5th NMOS tube M7
The connection of the grid of drain and gate and the 6th NMOS tube M8；
The source electrode of the 7th NMOS tube M9 of drain electrode connection of 4th NMOS tube M6, the grid and the 8th NMOS tube of the 7th NMOS tube M9
The drain and gate connection of the grid of M10, the tenth NMOS tube Mb2, the drain electrode and the leakage of the 4th PMOS tube M11 of the 7th NMOS tube M9
Pole is connected with the grid of grid and the 5th PMOS tube M12；
The drain electrode of 5th PMOS tube M12 connects the grid and the second capacitor of the drain electrode of the 8th NMOS tube M10, the 7th PMOS tube M15
One end of Cb, the drain electrode connection of the source electrode and the 6th NMOS tube M8 of the 8th NMOS tube M10；
The other end of second capacitor Cb is connect with the grid of the grid of the 6th PMOS tube M13 and drain electrode and the 9th NMOS tube M14；
The source electrode of the source electrode of 6th PMOS tube M13 and the grid of the 11st NMOS tube Mb3 and drain electrode and the tenth NMOS tube Mb2 connect
It connects；
Drain electrode, the drain electrode of the 7th PMOS tube M15 and the other end of first capacitor Cm of 9th NMOS tube M14 is connected to signal
The output end of amplifying circuit；
The source of the backward end of current source, the source electrode of the 11st NMOS tube Mb3, the source electrode of the first NMOS tube M3, the second NMOS tube M4
Pole, the source electrode of third NMOS tube M5, the source electrode of the 4th NMOS tube M6, the source electrode of the 5th NMOS tube M7, the 6th NMOS tube M8 source
The source grounding of pole and the 9th NMOS tube M14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448884.0A CN109088628A (en) | 2017-06-14 | 2017-06-14 | Control circuit for audio-switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710448884.0A CN109088628A (en) | 2017-06-14 | 2017-06-14 | Control circuit for audio-switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109088628A true CN109088628A (en) | 2018-12-25 |
Family
ID=64838912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710448884.0A Pending CN109088628A (en) | 2017-06-14 | 2017-06-14 | Control circuit for audio-switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109088628A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633954A (en) * | 2013-11-13 | 2014-03-12 | 电子科技大学 | Two-stage operational amplifier |
| CN105611667A (en) * | 2015-12-19 | 2016-05-25 | 长安大学 | Control circuit and method based on sound-light control energy-saving LED lamp |
-
2017
- 2017-06-14 CN CN201710448884.0A patent/CN109088628A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633954A (en) * | 2013-11-13 | 2014-03-12 | 电子科技大学 | Two-stage operational amplifier |
| CN105611667A (en) * | 2015-12-19 | 2016-05-25 | 长安大学 | Control circuit and method based on sound-light control energy-saving LED lamp |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181225 |
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| WD01 | Invention patent application deemed withdrawn after publication |