CN208285492U - A kind of earphone - Google Patents
A kind of earphone Download PDFInfo
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- CN208285492U CN208285492U CN201820565028.3U CN201820565028U CN208285492U CN 208285492 U CN208285492 U CN 208285492U CN 201820565028 U CN201820565028 U CN 201820565028U CN 208285492 U CN208285492 U CN 208285492U
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- microphone
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- earphone
- switch
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Abstract
The utility model embodiment discloses a kind of earphone, comprising: microphone, current-limiting resistance, on-off switch, encoder and controller；Wherein, the signal end of the microphone is connect by Mike's line of the earphone with the encoder, and the first auxiliary end of the microphone is connect with one end of the on-off switch, and the ground terminal of the microphone and the second auxiliary end are grounded；One end of the current-limiting resistance is connect with the ground terminal of the microphone, and the other end of the current-limiting resistance is connect with the other end of the on-off switch；For controlling the controller of the on off operating mode of the on-off switch according to whether the encoder encodes the audio signal from the microphone and being connect respectively with the control terminal of the on-off switch and the encoder.Technical solution provided by the embodiment of the utility model, the control by controller to on-off switch can effectively prevent current-limiting resistance to form leakage current, earphone avoided to consume the electricity of terminal.
Description
Technical field
The utility model embodiment belongs to wearable device technical field, specifically, being related to a kind of earphone.
Background technique
Currently, earphone has become people's accessory indispensable when using intelligent terminal, is seeing video or listening to music
When, sound can be obtained by earphone.Meanwhile being additionally provided on earphone MIC (microphone), user can be carried out by microphone
Voice communication.
But 2K is usually chosen to MIC the resistance R, R for playing metering function as shown in Figure 1, being equipped with mostly in existing earphone
Ω or so, resistance R and MIC belong to parallel relationship.After earphone connects terminal, the voltage of MIC is 1.8V under normal conditions, because
This, the both ends of resistance R are formed into a loop at resistance R, will generate power consumption on resistance R in this way there is also the voltage of 1.8V.Even if
When being that earphone does not work, as long as the circuit at resistance R is not turned off, and the both ends of resistance R are deposited always in earphone connection terminal
In the voltage of 1.8V, therefore it will form a leakage current, and then consume to the electricity of terminal, when reducing the continuation of the journey of terminal
Between.
Utility model content
It in view of this, the utility model embodiment provides a kind of earphone, can be in the standby state in earphone, avoid generating
Additional power consumption increases the cruise duration of terminal.
The technical issues of to solve in the prior art, the utility model embodiment provides a kind of earphone, comprising: Mike
Wind, current-limiting resistance, on-off switch, encoder and controller；Wherein,
The signal end of the microphone is connect by Mike's line of the earphone with the encoder, and the of the microphone
One auxiliary end is connect with one end of the on-off switch, and the ground terminal of the microphone and the second auxiliary end are grounded；
One end of the current-limiting resistance is connect with the ground terminal of the microphone, the other end of the current-limiting resistance with
The other end of the on-off switch connects；
It is described logical to control for whether being encoded to the audio signal from the microphone according to the encoder
The controller for disconnecting the on off operating mode closed is connect with the control terminal of the on-off switch and the encoder respectively.
Optionally, the on-off switch is analog switch chip；
The control terminal of the analog switch chip is connect with the controller, and common end is described with the microphone
First auxiliary end connection, normally open end is connect with the current-limiting resistance.
Optionally, the on-off switch is single-pole double-throw switch (SPDT)；
The control terminal of the single-pole double-throw switch (SPDT) is connect with the controller, and described the of moved end and the microphone
One auxiliary end connection, the first fixing end are connect with the current-limiting resistance, and the second fixing end is open end.
Optionally, further includes: master control borad；
The controller, encoder and the microphone are arranged on the master control borad；
Function button is additionally provided on the master control borad, one end of the function button is connect with Mike's line of the earphone,
Other end ground connection.
Optionally, the function key includes: starting Pause key, volume increasing key and volume down key.
Optionally, further includes: sensitivity resistor and sensitivity capacitor；
One end of the sensitivity resistor is grounded, and the other end is connect with one end of the sensitivity capacitor；
The other end of the sensitivity capacitor is connect with the first auxiliary end of the microphone.
Optionally, the capacitance value range of the sensitivity capacitor is 1-3 μ F；
The resistance value range of the sensitivity resistor is 2-5K Ω.
Optionally, further includes: at least two filter capacitors；
One end of the filter capacitor is connect with Mike's line of the earphone, the other end and ground connection.
Optionally, further includes: anti-magnetic coil and antistatic diode；
The anti-magnetic coil accesses on Mike's line of the earphone；
One end of the antistatic diode is connect with the anti-magnetic coil, other end ground connection.
Further optionally, the antimagnetic coil number range is 500-700R.
Technical solution provided by the embodiment of the utility model, by adding on-off switch and controller in earphone, with by
Controller controls the on off operating mode of on-off switch according to whether encoder encodes the audio signal from microphone, with
It realizes and plays metering function in encoder work timing leakage resistance access circuit, current-limiting resistance is from circuit when the encoder free time
It disconnects, avoids the formation of leakage current, to reduce the terminal standby power consumption for being connected with the earphone.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model embodiment, for those of ordinary skill in the art, what is do not made the creative labor
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the utility model
A part of embodiment, the illustrative embodiments and their description of the utility model embodiment are for explaining that the utility model is implemented
Example, does not constitute the improper restriction to the utility model embodiment.
In the accompanying drawings:
Fig. 1 is the circuit diagram of microphone in the prior art；
Fig. 2 is the partial circuit diagram of the earphone of the utility model embodiment；
Fig. 3 is the structural schematic diagram of the earphone of the utility model embodiment.
Description of symbols
10: microphone；11: signal end；12: ground terminal；13: the first auxiliary ends；14: the second auxiliary ends；20: current limliting electricity
Resistance；30: on-off switch；40: encoder；50: controller；60: Mike's line；61: ground terminal；70: sensitivity resistor；71: sensitivity
Capacitor；80: function button；81: starting Pause key；82: volume increasing key；83: volume down key；Separate resistance at 84: the first；
Separate resistance at 85: the second；90: filter capacitor；91: anti-magnetic coil；92: antistatic diode.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model embodiment a part of the embodiment, instead of all the embodiments.Based on the utility model reality
Apply the embodiment in example, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, the range of the utility model embodiment protection is belonged to.
Inventor has found in the process of implementing the utility model, currently, terminal is when connecting earphone, even not using
In the case where earphone, the power consumption of terminal is also very fast.Tracing it to its cause is, the MIC of earphone terminate into have one for current limliting
Resistance.Due to the presence of the resistance, so that being formed into a loop at resistance R, after earphone insertion terminal when earphone is idle
A leakage current is easily formed, and then the electricity of terminal is consumed, reduces the cruise duration of terminal.
Therefore, to solve defect in the prior art, the utility model embodiment provides a kind of earphone, can be in earphone
Under standby mode, avoids generating additional power consumption, increase the cruise duration of terminal.
Fig. 2 is the partial circuit diagram of the earphone of the utility model embodiment, and Fig. 3 is the earphone of the utility model embodiment
Structural schematic diagram, as shown in Figures 2 and 3.
The utility model embodiment provides a kind of earphone, comprising: microphone 10, on-off switch 30, is compiled current-limiting resistance 20
Code device 40 and controller 50.Wherein, the signal end 11 of microphone 10 is connect by Mike's line 60 of earphone with encoder 40, Mike
First auxiliary end 13 of wind 10 is connect with one end of on-off switch 30, and the ground terminal 12 of microphone 10 and the second auxiliary end 14 connect
Ground is as connect with the ground terminal of earphone 61.Microphone 10 is formed into a loop by the Mike's line 60 and ground terminal 61 of earphone, so as to Mike
The operation of wind 10.When user is conversed using microphone 10, microphone 10 can be by Mike's line 60 of earphone to encoder
Output audio signal.
One end of current-limiting resistance 20 is connect with the ground terminal 12 of microphone 10, the other end and on-off switch of current-limiting resistance 20
30 other end connection.Current-limiting resistance 20 is used to carry out current limliting when in use for microphone 10.
For controlling on-off switch 30 according to whether encoder 40 encodes the audio signal from microphone 10
The controller 50 of on off operating mode connect respectively with the control terminal of on-off switch 30 and encoder 40.Specifically, controller 50 is controlled
When on-off switch 30 processed is in connected state, the access between current-limiting resistance 20 and microphone 10 is connected to, and current-limiting resistance 20 can be
10 current limliting of microphone.When the control on-off switch 30 of controller 50 is in an off state, between current-limiting resistance 20 and microphone 10
Access disconnects, and current-limiting resistance 20 will not generate power consumption.
Technical solution provided by the embodiment of the utility model, by controller 50 according to encoder 40 whether to from Mike
The audio signal of wind 10 is encoded to control the state of the connection of on-off switch 30 or disconnection.Effectively prevent microphone 10 not
Avoided earphone to the electricity of terminal so that current-limiting circuit does not generate stand-by power consumption in use, current-limiting resistance 20 forms leakage current
It is consumed.Microphone 10 in the utility model embodiment can be common microphone in the prior art, current-limiting resistance 20
Resistance value can be 2K Ω.
Earphone provided by the embodiment of the utility model is further described in detail below.
Controller 50 controls on-off and opens according to whether encoder 40 encodes the audio signal from microphone 10
Close 30 on off operating mode mode include it is a variety of, a kind of achievable mode is whether controller 50 by monitoring encoder 40
Audio signal from microphone 10 is encoded to control the on off operating mode of on-off switch 30.Another achievable mode
It is whether encoder 40 encodes the audio signal from microphone 10, sends corresponding signal to controller 50 respectively, with
Just controller 50 is according to the on off operating mode for receiving corresponding signal control on-off switch 30.It certainly, further include other modes, this
Place does not repeat one by one.
In a kind of embodiment of specific implementation, when user uses the microphone 10 of earphone, controller 50 just controls on-off
Switch 30 is in connected state.By taking the monitoring of controller 50 as an example, for example, when user is only to listen to music using earphone
In the case where, the monitoring of controller 50 is decoded the audio signal sent from Mike's line 60 of earphone less than encoder 40,
Be exactly that user does not use microphone 10, disconnected at this point, controller 50 controls on-off switch 30, current-limiting resistance 20 will not generate to
Machine power consumption.When user is conversed using microphone 10, controller 50 can listen to encoder 40 and send out from Mike's line 60 of earphone
The audio signal come is decoded, that is, user is using microphone 10, connects at this point, controller 50 controls on-off switch 30
Logical, current-limiting resistance 20 is 10 current limliting of microphone.
In the utility model embodiment, on-off switch 30 can be analog switch chip either single-pole double-throw switch (SPDT).Tool
Body, with continued reference to Fig. 2, on-off switch 30 can be analog switch chip, and the control terminal of analog switch chip is (i.e. in Fig. 2
The end IN1-pin 4) it is connect with controller 50, the first auxiliary of common end (i.e. the end COM1-pin 3 in Fig. 2) and microphone 10
13 connection of end, normally open end (i.e. the end NO1-pin 2 in Fig. 2) is connect with current-limiting resistance 20.In common end and analog switch chip
Normally open end connection when, the circuit communication between the first auxiliary end 13 of current-limiting resistance 20 and microphone 10, current-limiting resistance 20 is
10 current limliting of microphone.When common end is connected to the normal-closed end (i.e. the end NC1-pin 5 in Fig. 2) of analog switch chip, that is, simulate
The common end and normally open end of switch chip disconnect, and the circuit between current-limiting resistance 20 and the first auxiliary end 13 of microphone 10 is disconnected
It opens.
On-off switch 30 is single-pole double-throw switch (SPDT), and the control terminal of single-pole double-throw switch (SPDT) is connect with controller 50, moved end and wheat
First auxiliary end 13 of gram wind 10 connects, and the first fixing end is connect with current-limiting resistance 20, and the second fixing end is open end.Wherein,
Open end is the end not connecting with other any parts, reference can be made to the normal-closed end in Fig. 2, i.e. NC1 end-pin 5, belongs to sky
End.When moved end is connected to the first fixing end, circuit communication between the first auxiliary end 13 of current-limiting resistance 20 and microphone 10,
Current-limiting resistance 20 is 10 current limliting of microphone.When moved end is connected to open end, i.e., moved end and the first fixing end disconnect, current-limiting resistance
Circuit between 20 and the first auxiliary end 13 of microphone 10 disconnects.
Microphone 10 is controlled for convenience, in the utility model embodiment, earphone further include: master control borad.Control
Device 50, encoder 40 and microphone 10 are arranged on master control borad.Function button 80 is additionally provided on master control borad, function button 80
Mike's line 60 of one end and earphone connection, other end ground connection, as connect with the ground terminal of earphone 61.It can be right by function button 80
Microphone 10 is controlled accordingly.
Specifically, function key includes: starting Pause key 81, volume increasing key 82 and volume down key 83.One kind can be achieved
Mode be, start Pause key 81 one end and earphone Mike's line 60 connect, the other end ground connection, as connect with ground terminal 61.
One end of volume increasing key 82 by first separation resistance 84 connect with Mike's line 60 of earphone, the other end be grounded, as with ground
61 connection of end.One end of volume down key 83 separates resistance 84 and second by first and separates Mike's line 60 of resistance 85 and earphone
Connection, other end ground connection, as connect with ground terminal 61.
Function key further includes that the first separation resistance 84 and second separates resistance 85.First separates resistance 84 and the second separation electricity
The effect of resistance 85 is to separate starting Pause key 81, volume increasing key 82 and volume down key 83, prevents from occurring between their threes
The situation of short circuit, avoids function from obscuring.First range for separating the resistance value of resistance 84 and the second separation resistance 85 is 350-450
Ω.In the utility model embodiment, the first resistance value for separating resistance 84 is 221 Ω, and the second resistance value for separating resistance 85 is 392
Ω。
Referring to fig. 2, to guarantee that the sensitivity of microphone 10 when in use is in a stable state, the utility model is real
It applies in example, further includes: sensitivity resistor 70 and sensitivity capacitor 71.One end of sensitivity resistor 70 is grounded, as with ground terminal 61
Connection, the other end are connect with one end of sensitivity capacitor 71.The other end of sensitivity capacitor 71 and the first auxiliary of microphone 10
13 connection of end.The range of the resistance value of sensitivity resistor 70 is 2-5K Ω, the utility model embodiment medium sensitivity resistance 70
Resistance value is 3.9K Ω, and the range of the capacitance of sensitivity capacitor 71 is 1-3 μ F, the utility model embodiment medium sensitivity capacitor 71
1 μ F of capacitance.
With continued reference to Fig. 2, to prevent high frequency waves from interfering microphone 10, earphone further include: at least two filtered electricals
Hold 90.Specifically, Mike's line 60 of one end of filter capacitor 90 and earphone connects, and other end ground connection as connect with ground terminal 61.
In the utility model embodiment, filter capacitor 90 is two, and a capacitance is 10nF, another capacitance is 15pF.
In addition, to prevent electromagnetic noise and electrostatic from interfering microphone 10, earphone further include: anti-magnetic coil 91 and anti-
Electrostatic diode 92.Specifically, anti-magnetic coil 91 accesses on Mike's line 60 of earphone.One end of antistatic diode 92 with it is antimagnetic
Coil 91 connects, and other end ground connection as connect with ground terminal 61.The circle number range of anti-magnetic coil 101 is 500-700R, this is practical
In new embodiment, the circle number of anti-magnetic coil 101 is 600R.
In conclusion technical solution provided by the embodiment of the utility model, by controller according to encoder whether to next
It is encoded from the audio signal of microphone to control the state of the connection of on-off switch or disconnection.Effectively prevent microphone not
By in use, current-limiting resistance forms leakage current so that current-limiting circuit does not generate stand-by power consumption, avoid earphone to the electricity of terminal into
Row consumption.
The example of the utility model embodiment is intended to concisely illustrate the technical characterstic of the utility model embodiment, so that this
Field technical staff can intuitively understand the technical characterstic of the utility model embodiment, be not intended as the utility model embodiment
Improper restriction.
Several preferred embodiments of the utility model embodiment have shown and described in above description, but as previously mentioned, should
Understand that the utility model embodiment is not limited to forms disclosed herein, should not be regarded as an exclusion of other examples,
And can be used for other combinations, modifications, and environments, and can in application contemplated scope described herein, by above-mentioned introduction or
The technology or knowledge of related fields are modified.And changes and modifications made by those skilled in the art do not depart from the utility model reality
Apply the spirit and scope of example, then it all should be in the protection scope of the utility model embodiment appended claims.
Claims (10)
1. a kind of earphone characterized by comprising microphone, current-limiting resistance, on-off switch, encoder and controller；Wherein,
The signal end of the microphone is connect by Mike's line of the earphone with the encoder, and the first of the microphone is auxiliary
End is helped to connect with one end of the on-off switch, the ground terminal of the microphone and the second auxiliary end are grounded；
One end of the current-limiting resistance is connect with the ground terminal of the microphone, the other end of the current-limiting resistance with it is described
The other end of on-off switch connects；
For controlling the on-off according to whether the encoder encodes the audio signal from the microphone and opening
The controller of the on off operating mode of pass is connect with the control terminal of the on-off switch and the encoder respectively.
2. earphone according to claim 1, which is characterized in that the on-off switch is analog switch chip；
The control terminal of the analog switch chip is connect with the controller, common end and described the first of the microphone
End connection is assisted, normally open end is connect with the current-limiting resistance.
3. earphone according to claim 1, which is characterized in that the on-off switch is single-pole double-throw switch (SPDT)；
The control terminal of the single-pole double-throw switch (SPDT) is connect with the controller, and described the first of moved end and the microphone is auxiliary
End is helped to connect, the first fixing end is connect with the current-limiting resistance, and the second fixing end is open end.
4. earphone according to claim 1, which is characterized in that further include: master control borad；
The controller, encoder and the microphone are arranged on the master control borad；
Function button is additionally provided on the master control borad, one end of the function button is connect with Mike's line of the earphone, another
End ground connection.
5. earphone according to claim 4, which is characterized in that the function key includes: starting Pause key, volume increasing key
And volume down key.
6. earphone according to any one of claims 1 to 5, which is characterized in that further include: sensitivity resistor and sensitivity electricity
Hold；
One end of the sensitivity resistor is grounded, and the other end is connect with one end of the sensitivity capacitor；
The other end of the sensitivity capacitor is connect with the first auxiliary end of the microphone.
7. earphone according to claim 6, which is characterized in that the capacitance value range of the sensitivity capacitor is 1-3 μ F；
The resistance value range of the sensitivity resistor is 2-5K Ω.
8. earphone according to any one of claim 1 to 5, which is characterized in that further include: at least two filter capacitors；
One end of the filter capacitor is connect with Mike's line of the earphone, other end ground connection.
9. earphone according to any one of claim 1 to 5, which is characterized in that further include: anti-magnetic coil and antistatic two
Pole pipe；
The anti-magnetic coil accesses on Mike's line of the earphone；
One end of the antistatic diode is connect with the anti-magnetic coil, other end ground connection.
10. earphone according to claim 9, which is characterized in that the antimagnetic coil number range is 500-700R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820565028.3U CN208285492U (en) | 2018-04-19 | 2018-04-19 | A kind of earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820565028.3U CN208285492U (en) | 2018-04-19 | 2018-04-19 | A kind of earphone |
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| Publication Number | Publication Date |
|---|---|
| CN208285492U true CN208285492U (en) | 2018-12-25 |
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ID=64751633
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820565028.3U Active CN208285492U (en) | 2018-04-19 | 2018-04-19 | A kind of earphone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889943A (en) * | 2019-04-18 | 2019-06-14 | 东莞市亿瑞特电子有限公司 | The dual microphone earphone of Switch Control |
-
2018
- 2018-04-19 CN CN201820565028.3U patent/CN208285492U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889943A (en) * | 2019-04-18 | 2019-06-14 | 东莞市亿瑞特电子有限公司 | The dual microphone earphone of Switch Control |
| CN109889943B (en) * | 2019-04-18 | 2024-04-05 | 东莞市亿瑞特电子有限公司 | Dual-microphone earphone controlled by switch |
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