CN108495222A - Double compatible line control earphone control circuits and the control method realized based on the circuit - Google Patents
Double compatible line control earphone control circuits and the control method realized based on the circuit Download PDFInfo
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- CN108495222A CN108495222A CN201810210702.0A CN201810210702A CN108495222A CN 108495222 A CN108495222 A CN 108495222A CN 201810210702 A CN201810210702 A CN 201810210702A CN 108495222 A CN108495222 A CN 108495222A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
- Push-Button Switches (AREA)
Abstract
The control method that the present invention is disclosed a kind of pair of compatible line control earphone control circuit and realized based on the circuit, control circuit includes IOS line traffic control control circuits（1）, distinguish management control circuit（2）, MEMS microphone circuit（3）, the first key switch（S1）, the second key switch（S2）, third key switch（S3）, the first diode（D1）, the first field-effect transistor（Q2）, the second field-effect transistor（Q3）, third field-effect transistor（Q5）, first resistor（R14）And second resistance（R15）；Control method includes the following steps：1）Line control earphone is connect with intelligent terminal；2）IOS line traffic control chips（U1）Send IOS Handshake Protocols；3）Result information is fed back to line control earphone by intelligent terminal；4）Line control earphone works according to the result information of feedback.Energy automatic identification smart machine system of the invention, gives the good experience sense of user, meets apple MFI certifications.
Description
Technical field
The present invention relates to ear phone technology field, more particularly to a kind of pair of compatible line control earphone control circuit and based on the circuit
The control method of realization.
Background technology
As internet rises, more and more intellectual products are full of on life periphery, such as smart mobile phone, tablet computer,
Music player etc., and the smart machines such as smart mobile phone, Intelligent flat computer are mainly with apple IOS systems, Android Android systems
It is maximum that system, which occupies the market share,；And line control earphone can control mobile phone broadcasting/pause, volume adjustment, receiving/hang-up become
Primary demand, but current line control earphone mainly controls volume adjusting function with independent IOS or Android operation system, it is single
The solely line control earphone of compatible IOS systems, is not applied for android system button volume adjusting control；And it is individually compatible with
The line control earphone of android system is not applied for IOS system button volume adjusting controls；Small part line control earphone can be real
It is existing double compatible to press key control, but this line control earphone have the shortcomings that it is following：First cannot by apple certification, second, shadow
User experience is rung, such as corresponding system is not adjusted to, need to be adjusted at correspondence system again, and line control earphone needs are inserted again
It pulls out.
Invention content
The technical problem to be solved by the present invention is to, for the above-mentioned prior art in deficiency, a kind of double compatible line traffic controls are provided
Earphone control circuit and the control method realized based on the circuit, have the function of automatic identification smart machine system, meet
The demand of user gives the good experience sense of user, and meets apple MFI authentication requestings.
In order to solve the above technical problems, the technical scheme is that：
A kind of double compatible line control earphone control circuits, including MIC IN interfaces, GND interfaces, IOS line traffic controls control circuit, differentiation pipe
Manage control circuit, MEMS microphone circuit, the first key switch, the second key switch, third key switch, the first diode,
First field-effect transistor, the second field-effect transistor, third field-effect transistor, first resistor and second resistance, the IOS
Line traffic control control circuit and distinguish management control circuit one end connect with MIC IN interfaces, the IOS line traffic controls control circuit with
The other end for distinguishing management control circuit is connect with one end of the first key switch and the second key switch respectively, and described first presses
The other end of key switch and the second key switch is connect with GND interfaces, one end and the MIC IN of the MEMS microphone circuit
Interface connects, and the other end of the MEMS microphone circuit is brilliant with the drain electrode of the second field-effect transistor and third field-effect respectively
The drain electrode of body pipe connects, and the grid of first field-effect transistor is connect with management control circuit is distinguished, first effect
The drain electrode of transistor is answered to be connect with MIC IN interfaces, the source electrode of first field-effect transistor is successively through first resistor and second
The grid of resistance eutral grounding line, second field-effect transistor is connect with first resistor, the source of second field-effect transistor
Pole is grounded, and the grid of the third field-effect transistor is connect with IOS line traffic control control circuits, the third field-effect transistor
Source electrode ground wire, one end of the third key switch and the first diode connect with MIC IN interfaces, and the third is pressed
The other end of key switch and the first diode is connect with GND interfaces.
As a preferred embodiment, the IOS line traffic controls control circuit includes IOS line traffic controls chip, 3rd resistor, the 4th electricity
Resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the first capacitance and the second capacitance are set on the IOS line traffic controls chip
Have first interface, second interface, third interface, the 4th interface, the 5th interface and the 6th interface, one end of second capacitance with
MIC IN interfaces connect, and the other end of second capacitance passes through the 8th resistance, 3rd resistor and the 4th resistance and IOS lines respectively
The first interface of control chip, second interface are connected with third interface, and one end of first capacitance is connect with the 4th resistance, described
The other end of first capacitance is connect with GND interfaces, and the 4th interface of the IOS line traffic controls chip is by the 6th resistance and GND interfaces
Connection, one end of first key switch are connect by the 7th resistance with the 5th interface of IOS line traffic control chips, and described first presses
The other end of key switch is connect with GND interfaces, and one end of second key switch is connect by the 5th resistance with the 7th resistance,
The other end of second key switch is connect with GND interfaces, and the 6th interface of the IOS line traffic controls chip is connect with GND interfaces,
The grid of the third field-effect transistor is connect with the 4th interface of IOS line traffic control chips.
As a preferred embodiment, the differentiation management control circuit include distinguish management control chip, the first relay,
Second relay, third relay, the 4th relay, the 5th relay of relay, the 6th relay, the 7th relay, the 8th
Relay, the 9th relay, the tenth relay, the 11st relay, the 12nd relay, the 9th resistance, the tenth resistance, the tenth
One resistance, twelfth resistor, thirteenth resistor, third capacitance, the 4th capacitance and the second diode, the differentiation management control core
On piece connects equipped with first interface, second interface, third interface, the 4th interface, the 5th interface, the 6th interface, the 7th interface, the 8th
Mouth, the 9th interface, the tenth interface, the 11st interface, the 12nd interface, the 13rd interface and the 14th interface, described first after
The first end of electric appliance is connect by the 9th resistance with MIC IN interfaces, and the second end of first relay is controlled with management is distinguished
The first interface of chip connects, and the first end of second relay is connect by the tenth resistance with MIC IN interfaces, and described the
The second end of two relays connect with the second interface for managing control chip is distinguished, and the first end of the third relay passes through the
11 resistance eutral grounding lines, the second end of the third relay and the third interface for distinguishing management control chip are connect, and described the
The first end of four relays and the 5th relay is grounded, the second end of the 4th relay and the 5th relay respectively with
The 4th interface and the connection of the 5th interface of management control chip are distinguished, anode and the MIC IN interfaces of second diode connect
It connects, the cathode of second diode is connect with the first end of the 6th relay, the second end of the 6th relay and differentiation
The 6th interface connection of management control chip, one end of the third capacitance connect with the first end of the 6th relay, and described the
The other end of three capacitances is grounded, and the first end of the 7th relay is connect by thirteenth resistor with MIC IN interfaces, institute
The second end for stating the 7th relay is connect with the 7th interface for managing control chip is distinguished, the grid of first field-effect transistor
Pole is connect with the first end of the 7th relay, and the first end of the 8th relay is connect with MIC IN interfaces, the described 9th after
The first end of electric appliance is connect through twelfth resistor with MIC IN interfaces, and the second end of the 9th relay is controlled with management is distinguished
9th interface of chip connects, and one end of the 4th capacitance is connect with the first end of the tenth relay, the 4th capacitance
The other end is grounded, and the second end of the tenth relay is connect with the 12nd interface for distinguishing management and controlling chip, and described the
One end of one key switch is connect with the first end of the 11st relay, the other end and the GND interfaces of first key switch
Connection, the second end of the 11st relay are connect with the 13rd interface for managing control chip is distinguished, second button
One end of switch is connect with the first end of the 12nd relay, and the other end of second key switch is connect with GND interfaces, institute
The second end for stating the 12nd relay is connect with the 14th interface for managing control chip is distinguished.
As a preferred embodiment, the MEMS microphone circuit includes MEMS microphone chip, the 14th resistance, the tenth
Five resistance and the 5th capacitance, the MEMS microphone chip are equipped with first interface, second interface, third interface and the 4th and connect
Mouthful, the first interface of the MEMS microphone chip is connect with MIC IN interfaces, the second interface of the MEMS microphone chip
It is connect respectively with the drain electrode of the second field-effect transistor and the drain electrode of third field-effect transistor, the MEMS microphone chip
Third interface connect with the drain electrode of the second field-effect transistor, the 4th interface of the MEMS microphone chip is through the 15th electricity
Resistance is connect with the drain electrode of the second field-effect transistor, and one end of the 5th capacitance and the 4th interface of MEMS microphone chip connect
It connects, the other end of the 5th capacitance is connect through the 14th resistance with the drain electrode of the second field-effect transistor.
As a preferred embodiment, first field-effect transistor, the second field-effect transistor and third field-effect are brilliant
Body pipe is N-channel field effect transistor.
As a preferred embodiment, IOS Handshake Protocols are equipped in the IOS line traffic controls chip.
As a preferred embodiment, first diode is bilateral diode, and second diode is unidirectional two pole
Pipe.
A kind of double compatible line control earphone control methods, are based on intelligent terminal and line control earphone, the smart machine is built-in with
IOS systems or android system, the line control earphone include control circuit as described above, and the control method includes following
Step：
1）Make the GND interfaces and intelligent terminal of the MIC IN interfaces of line control earphone and Section four of intelligent terminal and control circuit
Third section connection；
2）The IOS line traffic controls chip of line control earphone sends IOS Handshake Protocols to intelligent terminal, and intelligent terminal is shaken hands receiving IOS
It attempts shake hands connecting with line control earphone after agreement；
3）Then the result information for connection of shaking hands is fed back to the IOS line traffic controls chip of line control earphone and distinguishes management control by intelligent terminal
In coremaking piece；
4）The connection result information work of shaking hands that IOS line traffic controls chip and differentiation management control chip are fed back according to intelligent terminal, if
It shakes hands successful connection, then the first key switch of IOS line traffic controls chip controls and the work of the second key switch, and distinguishes management control core
Piece controls the first relay and the second relay disconnects the connection of itself and the 9th resistance and the tenth resistance；If shake hands connection not at
Work(, then IOS line traffic controls chip do not work, and distinguish management control the 11st relay of chip controls and the 12nd relay make its with
First key switch and the connection of the second key switch, and the first key switch and the are controlled by the 9th resistance and the tenth resistance
Two key switches work.
As a preferred embodiment, step 4）In connection of shaking hands it is unsuccessful, distinguish management control chip, the tenth resistance and the
Volume reducing function is realized in the cooperation of one key switch, and it is real to distinguish management control chip, the 9th resistance and the cooperation of the second key switch
Existing Volume Up function.
As a preferred embodiment, the smart machine is smart mobile phone or Intelligent flat computer.
The beneficial effects of the invention are as follows：By IOS line traffic controls control circuit, distinguish management control circuit, the first key switch
The function that automatic identification smart machine system can be realized with the cooperation of the second key switch, passes through IOS line traffic controls control circuit, first
Button volume adjustment control is realized in the cooperation of key switch and the second key switch when the smart machine system of connection is IOS systems
System, and by distinguishing smart machine system of the cooperation in connection of management control circuit, the first key switch and the second key switch
Button volume adjusting control is realized when system is android system, is met the needs of users, is given the good experience sense of user；And
Meet apple MFI authentication requestings；It is specified with apple due to there is the IOS line traffic controls chip through apple certification in the control circuit
MEMS microphone chip, and when the smart machine being connect with line control earphone is the smart machine of IOS systems, distinguish management control
Chip is not involved in any communication of apple line traffic control control chip U1 and the smart machine, therefore line control earphone can meet MFI specifications,
Apple MFI certifications can be passed through.
Description of the drawings
Fig. 1 is the circuit frame schematic diagram of embodiments of the present invention；
Fig. 2 is the circuit diagram of embodiments of the present invention.
In figure：1-IOS line traffic control control circuits, 2- distinguish management control circuit, 3-MEMS microphone circuits, key switch S1
It is switched for volume down control button, key switch S2 is that volume increases control button switch, and key switch S3 is multi-functional presses
Key switch.
Specific implementation mode
Xia Mianjiehefutuduibenfamingjiegouyuanlihegongzuoyuanlizuojinyibuxiangxishuoming.
As shown in Fig. 1~Fig. 2, a kind of double compatible line control earphone control circuits, including MIC IN interfaces, GND interfaces, IOS
Line traffic control control circuit 1 distinguishes management control circuit 2, MEMS microphone circuit 3, the first key switch S1, the second key switch
S1, third key switch S1, the first diode D1, the first field-effect transistor Q2, the second field-effect transistor Q2, third field effect
Answer transistor Q2, the first 3rd resistor R14 and the second 3rd resistor R14, the IOS line traffic controls control circuit 1 and differentiation management control
One end of circuit 2 processed is connect with MIC IN interfaces, and the IOS line traffic controls control circuit 1 is another with differentiation management control circuit 2
End is connect with one end of the first key switch S1 and the second key switch S1 respectively, the first key switch S1 and the second button
The other end of switch S1 is connect with GND interfaces, and one end of the MEMS microphone circuit 3 is connect with MIC IN interfaces, described
The leakage with the drain electrode of the second field-effect transistor Q2 and third field-effect transistor Q2 respectively of the other end of MEMS microphone circuit 3
Pole connects, and the grid of the first field-effect transistor Q2 is connect with management control circuit 2 is distinguished, and first field-effect is brilliant
The drain electrode of body pipe Q2 is connect with MIC IN interfaces, and the source electrode of the first field-effect transistor Q2 is successively through the first 3rd resistor
R14 and the second 3rd resistor R15 ground wires, the grid of the second field-effect transistor Q2 are connect with the first 3rd resistor R14,
The source electrode of the second field-effect transistor Q2 is grounded, and grid and the IOS line traffic controls of the third field-effect transistor Q2 control
Circuit 1 connects, the source electrode ground wire of the third field-effect transistor Q2, the third key switch S1 and the first diode D1
One end connect with MIC IN interfaces, the other end of the third key switch S1 and the first diode D1 with GND interfaces
Connection.
The IOS line traffic controls control circuit 1 includes IOS line traffic control chips U1,3rd resistor R1, the 4th resistance R2, the 5th resistance
R3, the 6th resistance R4, the 7th resistance R8, the 8th resistance R17, the first capacitance C1 and the second capacitance C6, the IOS line traffic controls chip U1
It is equipped with first interface, second interface, third interface, the 4th interface, the 5th interface and the 6th interface, the second capacitance C6's
One end is connect with MIC IN interfaces, and the other end of the second capacitance C6 passes through the 8th resistance R17,3rd resistor R1 and the respectively
Four resistance R2 are connect with first interface, second interface and the third interface of IOS line traffic control chips U1, one end of the first capacitance C1
It being connect with the 4th resistance R2, the other end of the first capacitance C1 is connect with GND interfaces, and the 4th of the IOS line traffic controls chip U1 the
Interface is connect by the 6th resistance R4 with GND interfaces, and one end of the first key switch S1 is by the 7th resistance R8 and IOS lines
The 5th interface connection of chip U1 is controlled, the other end of the first key switch S1 is connect with GND interfaces, and second button is opened
The one end for closing S1 is connect by the 5th resistance R3 with the 7th resistance R8, the other end and the GND interfaces of the second key switch S1
Connection, the 6th interface of the IOS line traffic controls chip U1 connect with GND interfaces, the grid of the third field-effect transistor Q2 and
The 4th interface of IOS line traffic control chips U1 connects.
The differentiation management control circuit 2 includes distinguishing management control chip U3, the first relay J1, the second relay
J2, third relay J3, the 4th relay J4, the 5th relay J5, the 6th relay J6, the 7th relay J7, the 8th relay
Device J8, the 9th relay J9, the tenth relay J12, the 11st relay J13, the 12nd relay J14, the 9th resistance R9,
Ten resistance R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, the first capacitance C4, the second capacitance C5 and
Two diode D2, the differentiation management control chip U3 are equipped with first interface, second interface, third interface, the 4th interface, the
Five interfaces, the 6th interface, the 7th interface, the 8th interface, the 9th interface, the tenth interface, the 11st interface, the 12nd interface,
The first end of 13 interfaces and the 14th interface, the first relay J1 is connect by the 9th resistance R9 with MIC IN interfaces,
The second end of the first relay J1 is connect with the first interface for managing control chip U3 is distinguished, the second relay J2's
First end is connect by the tenth resistance R10 with MIC IN interfaces, and the second end of the second relay J2 is controlled with management is distinguished
The second interface of chip U3 connects, and the first end of the third relay J3 is by eleventh resistor R11 ground wires, the third
The second end of relay J3 is connect with the third interface for managing control chip U3 is distinguished, the 4th relay J4 and the 5th relay
The first end of device J5 is grounded, and the second end of the 4th relay J4 and the 5th relay J5 is controlled with differentiation management respectively
The 4th interface of chip U3 and the connection of the 5th interface, the anode of the second diode D2 connect with MIC IN interfaces, and described the
The cathode of two diode D2 is connect with the first end of the 6th relay J6, and second end and the differentiation of the 6th relay J6 manage
The 6th interface connection of chip U3 is controlled, one end of the first capacitance C4 is connect with the first end of the 6th relay J6, described
The other end of first capacitance C4 is grounded, and the first end of the 7th relay J7 connects by thirteenth resistor R13 and MIC IN
Mouth connection, the second end of the 7th relay J7 and the 7th interface for distinguishing management control chip U3 are connect, described first
The grid of effect transistor Q2 is connect with the first end of the 7th relay J7, first end and the MIC IN of the 8th relay J8
Interface connects, and the first end of the 9th relay J9 is connect through twelfth resistor R12 with MIC IN interfaces, the 9th relay
The second end of device J9 is connect with the 9th interface for managing control chip U3 is distinguished, one end and the tenth relay of the second capacitance C5
The first end of device J12 connects, the other end ground wire of the second capacitance C5, the second end of the tenth relay J12 and area
It is in charge of the 12nd interface connection of reason control chip U3, one end of the first key switch S1 is with the 11st relay J13's
First end connects, and the other end of the first key switch S1 is connect with GND interfaces, and the second of the 11st relay J13
It holds and is connect with the 13rd interface for distinguishing management control chip U3, one end and the 12nd relay of the second key switch S1
The first end of J14 connects, and the other end of the second key switch S1 is connect with GND interfaces, the 12nd relay J14's
Second end is connect with the 14th interface for managing control chip U3 is distinguished.
The MEMS microphone circuit 3 includes MEMS microphone chip U2, the 14th resistance R5, the 15th resistance R7 and the
Five capacitance C3, the MEMS microphone chip U2 is equipped with first interface, second interface, third interface and the 4th interface, described
The first interface of MEMS microphone chip U2 is connect with MIC IN interfaces, the second interface difference of the MEMS microphone chip U2
It is connect with the drain electrode of the second field-effect transistor Q2 and the drain electrode of third field-effect transistor Q2, the MEMS microphone chip
The third interface of U2 is connect with the drain electrode of the second field-effect transistor Q2, and the 4th interface of the MEMS microphone chip U2 is through
15 resistance R7 are connect with the drain electrode of the second field-effect transistor Q2, one end of the 5th capacitance C3 and MEMS microphone chip
The 4th interface of U2 connects, leakage of the other end through the 14th resistance R5 and the second field-effect transistor Q2 of the 5th capacitance C3
Pole connects.
The first field-effect transistor Q2, the second field-effect transistor Q2 and third field-effect transistor Q2 are N ditches
Road field-effect transistor.IOS Handshake Protocols are equipped in the IOS line traffic controls chip U1.The first diode D1 is two-way two pole
Pipe, the second diode D2 are unilateral diode.MEMS microphone chip U2 is the MEMS microphone chip that apple is specified.
A kind of double compatible line control earphone control methods, are based on intelligent terminal and line control earphone, the smart machine is built-in with
IOS systems or android system, the line control earphone include control circuit as described above, and the control method includes following
Step：
1）Make the GND interfaces and intelligent terminal of the MIC IN interfaces of line control earphone and Section four of intelligent terminal and control circuit
Third section connection；
2）The IOS line traffic control chip U1 of line control earphone send IOS Handshake Protocols to intelligent terminal, and intelligent terminal is held receiving IOS
It attempts shake hands connecting with line control earphone after Handball Association's view；
3）Then the result information for connection of shaking hands is fed back to the IOS line traffic control chip U1 of line control earphone and distinguished and managed by intelligent terminal
It controls in chip U3；
4）The connection result information work of shaking hands that IOS line traffic control chip U1 and differentiation management control chip U3 are fed back according to intelligent terminal
Make, if shaking hands successful connection, IOS line traffic control chips U1 controls the first key switch S1 and the second key switch S1 works, and area
It is in charge of reason control chip U3 controls the first relay J1 and the second relay J2 and disconnects itself and the 9th resistance R9 and the tenth resistance R10
Connection；If shaking hands, connection is unsuccessful, and IOS line traffic control chips U1 does not work, and distinguishes management control chip U3 controls the 11st
Relay J13 and the 12nd relay J14 make it be connect with the first key switch S1 and the second key switch S1, pass through differentiation
Volume reducing function is realized in management control chip U3, the tenth resistance R10 and the first key switch S1 cooperations, by distinguishing management control
Volume Up function is realized in coremaking piece U3, the 9th resistance R9 and the second key switch S1 cooperations.
The smart machine is smart mobile phone or Intelligent flat computer.
The MEMS microphone core specified with apple due to there is the IOS line traffic control chip U1 through apple certification in the control circuit
Piece U2, and when the smart machine being connect with line control earphone is the smart machine of IOS systems, it distinguishes management control chip U3 and does not join
Any communication of chip U1 and the smart machine are controlled with apple line traffic control, therefore line control earphone can meet MFI specifications, can pass through
Apple MFI certifications.
The above is only better embodiment of the present invention, and every technical solution according to the present invention is to above implementation
Any subtle modifications, equivalent variations and modifications, belong in the range of technical solution of the present invention made by mode.
Claims (10)
1. a kind of double compatible line control earphone control circuits, it is characterised in that：Including MIC IN interfaces, GND interfaces, IOS line traffic control controls
Circuit processed（1）, distinguish management control circuit（2）, MEMS microphone circuit（3）, the first key switch（S1）, the second key switch
（S2）, third key switch（S3）, the first diode（D1）, the first field-effect transistor（Q2）, the second field-effect transistor
（Q3）, third field-effect transistor（Q5）, first resistor（R14）And second resistance（R15）, the IOS line traffic controls control circuit（1）
With differentiation management control circuit（2）One end connect with MIC IN interfaces, the IOS line traffic controls control circuit（1）It is managed with distinguishing
Manage control circuit（2）The other end respectively with the first key switch（S1）With the second key switch（S2）One end connection, it is described
First key switch（S1）With the second key switch（S2）The other end connect with GND interfaces, the MEMS microphone circuit
（3）One end connect with MIC IN interfaces, the MEMS microphone circuit（3）The other end respectively with the second field-effect transistor
（Q3）Drain electrode and third field-effect transistor（Q5）Drain electrode connection, first field-effect transistor（Q2）Grid and area
Divide management control circuit（2）Connection, first field-effect transistor（Q2）Drain electrode connect with MIC IN interfaces, described
One field-effect transistor（Q2）Source electrode successively through first resistor（R14）And second resistance（R15）Ground wire, second effect
Answer transistor（Q3）Grid and first resistor（R14）Connection, second field-effect transistor（Q3）Source electrode ground wire, institute
State third field-effect transistor（Q5）Grid and IOS line traffic control control circuits（1）Connection, the third field-effect transistor（Q5）
Source electrode ground wire, the third key switch（S3）With the first diode（D1）One end connect with MIC IN interfaces, institute
State third key switch（S3）With the first diode（D1）The other end connect with GND interfaces.
2. double compatible line control earphone control circuits according to claim 1, it is characterised in that：The IOS line traffic controls control electricity
Road（1）Including IOS line traffic control chips（U1）, 3rd resistor（R1）, the 4th resistance（R2）, the 5th resistance（R3）, the 6th resistance（R4）、
7th resistance（R8）, the 8th resistance（R17）, the first capacitance（C1）With the second capacitance（C6）, the IOS line traffic controls chip（U1）On set
There are first interface, second interface, third interface, the 4th interface, the 5th interface and the 6th interface, second capacitance（C6）One
End is connect with MIC IN interfaces, second capacitance（C6）The other end respectively pass through the 8th resistance（R17）, 3rd resistor（R1）
With the 4th resistance（R2）With IOS line traffic control chips（U1）First interface, second interface connected with third interface, first capacitance
（C1）One end and the 4th resistance（R2）Connection, first capacitance（C1）The other end connect with GND interfaces, the IOS lines
Control chip（U1）The 4th interface pass through the 6th resistance（R4）It is connect with GND interfaces, first key switch（S1）One end
By the 7th resistance（R8）With IOS line traffic control chips（U1）The 5th interface connection, first key switch（S1）The other end
It is connect with GND interfaces, second key switch（S2）One end pass through the 5th resistance（R3）With the 7th resistance（R8）Connection, institute
State the second key switch（S2）The other end connect with GND interfaces, the IOS line traffic controls chip（U1）The 6th interface connect with GND
Mouth connection, the third field-effect transistor（Q5）Grid and IOS line traffic control chips（U1）The 4th interface connection.
3. double compatible line control earphone control circuits according to claim 1, it is characterised in that：The differentiation management control electricity
Road（2）Control chip is managed including distinguishing（U3）, the first relay（J1）, the second relay（J2）, third relay（J3）,
Four relays（J4）, the 5th relay（J5）, the 6th relay（J6）, the 7th relay（J7）, the 8th relay（J8）, the 9th
Relay（J9）, the tenth relay（J12）, the 11st relay（J13）, the 12nd relay（J14）, the 9th resistance（R9）、
Tenth resistance（R10）, eleventh resistor（R11）, twelfth resistor（R12）, thirteenth resistor（R13）, third capacitance（C4）,
Four capacitances（C5）With the second diode（D2）, the differentiation management control chip（U3）It is equipped with first interface, second interface, the
Three interfaces, the 4th interface, the 5th interface, the 6th interface, the 7th interface, the 8th interface, the 9th interface, the tenth interface, the 11st
Interface, the 12nd interface, the 13rd interface and the 14th interface, first relay（J1）First end pass through the 9th resistance
（R9）It is connect with MIC IN interfaces, first relay（J1）Second end with distinguish management control chip（U3）First connect
Mouth connection, second relay（J2）First end pass through the tenth resistance（R10）Connect with MIC IN interfaces, described second after
Electric appliance（J2）Second end with distinguish management control chip（U3）Second interface connection, the third relay（J3）First
Eleventh resistor is passed through at end（R11）Ground wire, the third relay（J3）Second end with distinguish management control chip（U3）
Third interface connection, the 4th relay（J4）With the 5th relay（J5）First end be grounded, the described 4th after
Electric appliance（J4）With the 5th relay（J5）Second end respectively with distinguish manage control chip（U3）The 4th interface and the 5th connect
Mouth connection, second diode（D2）Anode connect with MIC IN interfaces, second diode（D2）Cathode and
Six relays（J6）First end connection, the 6th relay（J6）Second end with distinguish management control chip（U3）
Six interfaces connect, the third capacitance（C4）One end and the 6th relay（J6）First end connection, the third capacitance
（C4）The other end ground wire, the 7th relay（J7）First end pass through thirteenth resistor（R13）With MIC IN interfaces
Connection, the 7th relay（J7）Second end with distinguish management control chip（U3）The 7th interface connection, described first
Field-effect transistor（Q2）Grid and the 7th relay（J7）First end connection, the 8th relay（J8）First end
It is connect with MIC IN interfaces, the 9th relay（J9）First end through twelfth resistor（R12）It is connect with MIC IN interfaces,
9th relay（J9）Second end with distinguish management control chip（U3）The 9th interface connection, the 4th capacitance
（C5）One end and the tenth relay（J12）First end connection, the 4th capacitance（C5）Other end ground wire, described the
Ten relays（J12）Second end with distinguish management control chip（U3）The 12nd interface connection, first key switch
（S1）One end and the 11st relay（J13）First end connection, first key switch（S1）The other end connect with GND
Mouth connection, the 11st relay（J13）Second end with distinguish management control chip（U3）The 13rd interface connection, institute
State the second key switch（S2）One end and the 12nd relay（J14）First end connection, second key switch（S2）
The other end connect with GND interfaces, the 12nd relay（J14）Second end with distinguish management control chip（U3）
14 interfaces connect.
4. double compatible line control earphone control circuits according to claim 1, it is characterised in that：The MEMS microphone circuit
（3）Including MEMS microphone chip（U2）, the 14th resistance（R5）, the 15th resistance（R7）With the 5th capacitance（C3）, described
MEMS microphone chip（U2）It is equipped with first interface, second interface, third interface and the 4th interface, the MEMS microphone core
Piece（U2）First interface connect with MIC IN interfaces, the MEMS microphone chip（U2）Second interface respectively with second
Effect transistor（Q3）Drain electrode and third field-effect transistor（Q5）Drain electrode connection, the MEMS microphone chip（U2）
Third interface and the second field-effect transistor（Q3）Drain electrode connection, the MEMS microphone chip（U2）The 4th interface warp
15th resistance（R7）With the second field-effect transistor（Q3）Drain electrode connection, the 5th capacitance（C3）One end and MEMS wheats
Gram wind chip（U2）The 4th interface connection, the 5th capacitance（C3）The other end through the 14th resistance（R5）It is imitated with second
Answer transistor（Q3）Drain electrode connection.
5. double compatible line control earphone control circuits according to claim 1, it is characterised in that：First field effect transistor
Pipe（Q2）, the second field-effect transistor（Q3）With third field-effect transistor（Q5）It is N-channel field effect transistor.
6. double compatible line control earphone control circuits according to claim 2, it is characterised in that：The IOS line traffic controls chip
（U1）It is interior to be equipped with IOS Handshake Protocols.
7. double compatible line control earphone control circuits according to claim 3, it is characterised in that：First diode（D1）
For bilateral diode, second diode（D2）For unilateral diode.
8. a kind of double compatible line control earphone control methods, it is characterised in that：Based on intelligent terminal and line control earphone, the intelligence is set
Standby to be built-in with IOS systems or android system, the line control earphone includes such as claim 1-7 any one of them control electricity
Road, the control method include the following steps：
1）Make the GND interfaces and intelligent terminal of the MIC IN interfaces of line control earphone and Section four of intelligent terminal and control circuit
Third section connection；
2）The IOS line traffic control chips of line control earphone（U1）IOS Handshake Protocols are sent to intelligent terminal, intelligent terminal is receiving IOS
It attempts shake hands connecting with line control earphone after Handshake Protocol；
3）Then the result information for connection of shaking hands is fed back to the IOS line traffic control chips of line control earphone by intelligent terminal（U1）It is managed with distinguishing
Reason control chip（U3）In；
4）IOS line traffic control chips（U1）Control chip is managed with distinguishing（U3）The connection result information of shaking hands fed back according to intelligent terminal
Work, if shaking hands successful connection, IOS line traffic control chips（U1）Control the first key switch（S1）With the second key switch（S2）Work
Make, and distinguishes management control chip（U3）Control the first relay（J1）With the second relay（J2）Disconnect itself and the 9th resistance
（R9）With the tenth resistance（R10）Connection；Unsuccessful, IOS line traffic control chips are connected if shaking hands（U1）It does not work, and distinguishes management
Control chip（U3）Control the 11st relay（J13）With the 12nd relay（J14）Make itself and the first key switch（S1）With
And second key switch（S2）Connection, and pass through the 9th resistance（R9）With the tenth resistance（R10）Control the first key switch（S1）
With the second key switch（S2）Work.
9. double compatible line control earphone control methods according to claim 8, it is characterised in that：Step 4）In shake hands connection not
Management control chip is distinguished in success（U3）, the tenth resistance（R10）With the first key switch（S1）Volume down work(is realized in cooperation
Can, distinguish management control chip（U3）, the 9th resistance（R9）With the second key switch（S2）Volume Up function is realized in cooperation.
10. double compatible line control earphone control methods according to claim 8, it is characterised in that：The smart machine is intelligence
It can mobile phone or Intelligent flat computer.
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| CN201810210702.0A CN108495222B (en) | 2018-03-14 | 2018-03-14 | Dual-compatible line control earphone control circuit and control method based on circuit |
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| CN201810210702.0A CN108495222B (en) | 2018-03-14 | 2018-03-14 | Dual-compatible line control earphone control circuit and control method based on circuit |
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Cited By (1)
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