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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- 230000005236 sound signal Effects 0.000 claims abstract description 13
- 230000035945 sensitivity Effects 0.000 claims description 28
- 239000003990 capacitor Substances 0.000 claims description 21
- 230000005611 electricity Effects 0.000 abstract description 2
- 230000000670 limiting effect Effects 0.000 description 22
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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 embodiment of the utility model provides a belong to wearable equipment technical field, specifically speaking relates to an earphone.
Background
At present, earphones become an indispensable accessory for people to use intelligent terminals, and sound can be acquired through the earphones when people watch videos or listen to music. Meanwhile, the earphone is also provided with an MIC (microphone), and a user can carry out voice communication through the microphone.
However, as shown in fig. 1, a resistor R for limiting the current of the MIC is usually set in the conventional earphone, where R is usually about 2K Ω, and the resistor R and the MIC are in a parallel relationship. After the earphone is connected to the terminal, the voltage of MIC is usually 1.8V, so that a voltage of 1.8V is also present across the resistor R, and a loop is formed at the resistor R, so that power consumption is generated on the resistor R. Even if the earphone is not in operation, as long as the earphone is connected with the terminal, the loop at the resistor R is not disconnected, and the voltage of 1.8V is always present at the two ends of the resistor R, so that a leakage current is formed, the electric quantity of the terminal is further consumed, and the endurance time of the terminal is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present invention provides an earphone, which can avoid generating extra power consumption and increase the endurance time of the terminal when the earphone is in the standby state.
For solving the technical problem among the prior art, the embodiment of the utility model provides an earphone is provided, include: the device comprises a microphone, a current-limiting resistor, an on-off switch, an encoder and a controller; wherein,
the signal end of the microphone is connected with the encoder through a microphone wire of the earphone, a first auxiliary end of the microphone is connected with one end of the on-off switch, and a grounding end and a second auxiliary end of the microphone are both grounded;
one end of the current-limiting resistor is connected with the grounding end of the microphone, and the other end of the current-limiting resistor is connected with the other end of the on-off switch;
the controller is used for controlling the on-off state of the on-off switch according to whether the encoder encodes the audio signal from the microphone or not, and is respectively connected with the control end of the on-off switch and the encoder.
Optionally, the on-off switch is an analog switch chip;
the control end of the analog switch chip is connected with the controller, the public end of the analog switch chip is connected with the first auxiliary end of the microphone, and the normally open end of the analog switch chip is connected with the current-limiting resistor.
Optionally, the on-off switch is a single-pole double-throw switch;
the control end of the single-pole double-throw switch is connected with the controller, the moving end of the single-pole double-throw switch is connected with the first auxiliary end of the microphone, the first fixed end of the single-pole double-throw switch is connected with the current-limiting resistor, and the second fixed end of the single-pole double-throw switch is a disconnected end.
Optionally, the method further comprises: a main control board;
the controller, the encoder and the microphone are all arranged on the main control board;
the main control board is also provided with a function key, one end of the function key is connected with the microphone wire of the earphone, and the other end of the function key is grounded.
Optionally, the function key comprises: a pause key, a volume up key, and a volume down key are actuated.
Optionally, the method further comprises: a sensitivity resistor and a sensitivity capacitor;
one end of the sensitivity resistor is grounded, and the other end of the sensitivity resistor is connected with one end of the sensitivity capacitor;
the other end of the sensitivity capacitor is connected with a first auxiliary end of the microphone.
Optionally, the capacitance value of the sensitivity capacitor ranges from 1 to 3 μ F;
the resistance value range of the sensitivity resistor is 2-5K omega.
Optionally, the method further comprises: at least two filter capacitors;
one end of the filter capacitor is connected with a microphone line of the earphone, and the other end of the filter capacitor is grounded.
Optionally, the method further comprises: an anti-magnetic coil and an anti-static diode;
the antimagnetic coil is connected to a microphone wire of the earphone;
and one end of the anti-static diode is connected with the antimagnetic coil, and the other end of the anti-static diode is grounded.
In addition, optionally, the number of the antimagnetic coils ranges from 500-.
The embodiment of the utility model provides a technical scheme is through add on-off switch and controller in the earphone to whether encode the on-off state that comes the on-off switch according to the audio signal that comes from the microphone by the controller, play the current limiting effect in realizing that encoder during operation time current resistance access circuit, the encoder is idle time current resistance breaks off from the circuit, avoids forming the leakage current, with the terminal stand-by power consumption that the reduction is connected with this earphone.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain embodiments of the invention and are not intended to limit the embodiments of the invention unduly.
In the drawings:
fig. 1 is a circuit diagram of a prior art microphone;
fig. 2 is a partial circuit diagram of an earphone according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an earphone according to an embodiment of the present invention.
Description of the reference numerals
10: a microphone; 11: a signal terminal; 12: a ground terminal; 13: a first auxiliary terminal; 14: a second auxiliary terminal; 20: a current limiting resistor; 30: an on-off switch; 40: an encoder; 50: a controller; 60: a microphone line; 61: a ground terminal; 70: a sensitivity resistance; 71: a sensitivity capacitance; 80: function keys; 81: starting a pause key; 82: a volume up key; 83: a volume down key; 84: a first separation resistor; 85: a second separation resistor; 90: a filter capacitor; 91: a antimagnetic coil; 92: and an anti-static diode.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope protected by the embodiments of the present invention.
The inventor realizes the utility model discloses an in-process discovers that at present, the power consumption of terminal is also very fast when the terminal is connecting the earphone, even under the condition of not using the earphone. The reason for this is that the MIC terminal of the earphone is connected with a resistor for current limiting. Due to the existence of the resistor, after the earphone is inserted into the terminal, a loop is formed at the resistor R, so that leakage current is easily formed when the earphone does not work, the electric quantity of the terminal is further consumed, and the endurance time of the terminal is reduced.
Therefore, for solving the defect among the prior art, the embodiment of the utility model provides an earphone can avoid producing extra consumption, increases the time of endurance at terminal under the earphone is in standby state.
Fig. 2 is a partial circuit diagram of the earphone according to the embodiment of the present invention, and fig. 3 is a schematic structural diagram of the earphone according to the embodiment of the present invention, as shown in fig. 2 and fig. 3.
An embodiment of the utility model provides an earphone, include: microphone 10, current limiting resistor 20, on-off switch 30, encoder 40 and controller 50. The signal terminal 11 of the microphone 10 is connected to the encoder 40 through the microphone line 60 of the earphone, the first auxiliary terminal 13 of the microphone 10 is connected to one end of the on-off switch 30, and the ground terminal 12 and the second auxiliary terminal 14 of the microphone 10 are both grounded, that is, connected to the ground terminal 61 of the earphone. The microphone 10 is looped through the earphone's microphone line 60 and ground 61 for operation of the microphone 10. When the user is talking on the microphone 10, the microphone 10 may output an audio signal to the encoder through the microphone line 60 of the headset.
One end of the current limiting resistor 20 is connected to the ground terminal 12 of the microphone 10, and the other end of the current limiting resistor 20 is connected to the other end of the on-off switch 30. The current limiting resistor 20 is used to limit the current of the microphone 10 during use.
A controller 50 for controlling the on-off state of the on-off switch 30 according to whether the encoder 40 encodes the audio signal from the microphone 10 is connected to the control terminal of the on-off switch 30 and the encoder 40, respectively. Specifically, when the controller 50 controls the on-off switch 30 to be in the on state, the current limiting resistor 20 is connected to the microphone 10, and the current limiting resistor 20 may limit the current of the microphone 10. When the controller 50 controls the on-off switch 30 to be in the off state, the path between the current limiting resistor 20 and the microphone 10 is cut off, and the current limiting resistor 20 does not generate power consumption.
The embodiment of the utility model provides a technical scheme, whether encode the audio signal who comes from microphone 10 according to encoder 40 through controller 50 and control the state of the intercommunication or the disconnection of on-off switch 30. The current-limiting resistor 20 is effectively prevented from forming leakage current when the microphone 10 is not used, so that the current-limiting circuit does not generate standby power consumption, and the earphone is prevented from consuming the electric quantity of the terminal. The embodiment of the present invention provides a microphone 10 which can be a common microphone in the prior art, and the resistance of the current limiting resistor 20 can be 2K Ω.
The following provides a further detailed description of the earphone provided by the embodiment of the present invention.
The manner in which the controller 50 controls the on-off state of the on-off switch 30 according to whether the encoder 40 encodes the audio signal from the microphone 10 includes a variety of ways, and one way in which the controller 50 controls the on-off state of the on-off switch 30 by monitoring whether the encoder 40 encodes the audio signal from the microphone 10. Alternatively, whether the encoder 40 encodes the audio signal from the microphone 10 or not, respectively, sends a corresponding signal to the controller 50, so that the controller 50 controls the on-off state of the on-off switch 30 according to the received corresponding signal. Of course, other modes are also included, and the description is not repeated here.
In one embodiment, the controller 50 controls the on/off switch 30 to be in the on state when the user uses the microphone 10 of the earphone. Taking the monitoring of the controller 50 as an example, for example, when the user uses the earphone to listen to music only, the controller 50 cannot monitor that the encoder 40 decodes the audio signal transmitted from the microphone 60 of the earphone, that is, the user does not use the microphone 10, and at this time, the controller 50 controls the on-off switch 30 to be turned off, and the current limiting resistor 20 does not generate standby power consumption. When the user uses the microphone 10 to talk, the controller 50 can monitor that the encoder 40 decodes the audio signal sent from the microphone line 60 of the earphone, that is, the user uses the microphone 10, and at this time, the controller 50 controls the on-off switch 30 to be connected, and the current limiting resistor 20 limits the current for the microphone 10.
In the embodiment of the present invention, the on-off switch 30 can be an analog switch chip or a single-pole double-throw switch. Specifically, with continued reference to fig. 2, the on-off switch 30 may be an analog switch chip, a control terminal (i.e., terminal IN 1-pin 4 IN fig. 2) of the analog switch chip is connected to the controller 50, a common terminal (i.e., terminal COM 1-pin 3 IN fig. 2) is connected to the first auxiliary terminal 13 of the microphone 10, and a normally open terminal (i.e., terminal NO 1-pin 2 IN fig. 2) is connected to the current limiting resistor 20. When the common terminal is connected to the normally open terminal of the analog switch chip, the current limiting resistor 20 is connected to the loop between the first auxiliary terminal 13 of the microphone 10, and the current limiting resistor 20 limits the current of the microphone 10. When the common terminal is connected to the normally closed terminal of the analog switch chip (i.e., the terminal NC 1-pin 5 in fig. 2), i.e., the common terminal of the analog switch chip is disconnected from the normally open terminal, the circuit between the current limiting resistor 20 and the first auxiliary terminal 13 of the microphone 10 is disconnected.
The on-off switch 30 is a single-pole double-throw switch, a control end of the single-pole double-throw switch is connected with the controller 50, a moving end of the single-pole double-throw switch is connected with the first auxiliary end 13 of the microphone 10, a first fixed end of the single-pole double-throw switch is connected with the current-limiting resistor 20, and a second fixed end of the single-pole double-throw switch is an off end. The disconnected end is the end which is not connected with any other component, and can be seen as the normally closed end in fig. 2, that is, the NC1 end-pin 5, belongs to the empty end. When the moving end is connected to the first fixed end, the current limiting resistor 20 is connected to the loop between the first auxiliary end 13 of the microphone 10, and the current limiting resistor 20 limits the current of the microphone 10. When the moving end is connected to the disconnecting end, i.e. the moving end is disconnected from the first fixed end, the circuit between the current limiting resistor 20 and the first auxiliary end 13 of the microphone 10 is disconnected.
For the convenience of controlling the microphone 10, the embodiment of the present invention provides an earphone, which further includes: a main control panel. The controller 50, the encoder 40 and the microphone 10 are all disposed on the main control board. The main control board is also provided with a function key 80, one end of the function key 80 is connected with the microphone line 60 of the earphone, and the other end is grounded, namely connected with the ground end 61 of the earphone. The microphone 10 can be controlled accordingly by means of the function keys 80.
Specifically, the function keys include: a pause key 81, a volume up key 82 and a volume down key 83 are actuated. In one implementation, the start-pause key 81 is connected to the earphone microphone line 60 at one end and to ground at the other end, i.e., to ground 61. The volume up key 82 has one end connected to the earphone microphone line 60 through a first isolation resistor 84 and the other end connected to ground, i.e. to ground 61. The volume-down key 83 has one end connected to the earphone microphone line 60 through the first and second separation resistors 84 and 85, and the other end connected to the ground, i.e., the ground 61.
The function key further includes a first separation resistor 84 and a second separation resistor 85. The first and second separating resistors 84 and 85 are used to separate the start pause key 81, the volume up key 82 and the volume down key 83, so as to prevent short circuit between them and avoid function confusion. The resistance values of the first separating resistor 84 and the second separating resistor 85 are in the range of 350-450 Ω. In the embodiment of the present invention, the resistance of the first separating resistor 84 is 221 Ω, and the resistance of the second separating resistor 85 is 392 Ω.
Referring to fig. 2, in order to ensure that the sensitivity of the microphone 10 is in a stable state when in use, the embodiment of the present invention further includes: a sensitivity resistor 70 and a sensitivity capacitor 71. One end of the sensitivity resistor 70 is connected to ground, i.e., to the ground 61, and the other end is connected to one end of the sensitivity capacitor 71. The other end of the sensitivity capacitance 71 is connected to the first auxiliary terminal 13 of the microphone 10. The range of the resistance value of the sensitivity resistor 70 is 2-5K omega, the embodiment of the utility model provides an in the resistance value of the sensitivity resistor 70 be 3.9K omega, the range of the capacitance value of the sensitivity capacitor 71 be 1-3 muF, the embodiment of the utility model provides an in the embodiment of the capacitance value 1 muF of sensitivity capacitor 71.
With continued reference to fig. 2, in order to prevent the high frequency waves from interfering with the microphone 10, the headset further includes: at least two filter capacitors 90. Specifically, one end of the filter capacitor 90 is connected to the microphone line 60 of the earphone, and the other end is grounded, i.e., connected to the ground 61. In the embodiment of the present invention, the number of the filter capacitors 90 is two, one capacitance value is 10nF, and the other capacitance value is 15 pF.
In addition, in order to prevent the electromagnetic noise and the static electricity from interfering the microphone 10, the earphone further includes: a antimagnetic coil 91 and an antistatic diode 92. Specifically, the antimagnetic coil 91 is connected to the earphone microphone line 60. The anti-static diode 92 has one end connected to the anti-magnetic coil 91 and the other end connected to ground, i.e., the ground 61. The number of turns of the antimagnetic coil 101 is 500-700R, and in the embodiment of the present invention, the number of turns of the antimagnetic coil 101 is 600R.
To sum up, the embodiment of the utility model provides a technical scheme, whether encode the audio signal who comes from the microphone according to the encoder through the controller and control the state of break-make switch's intercommunication or disconnection. The current-limiting resistor is effectively prevented from forming leakage current when the microphone is not used, so that the current-limiting circuit does not generate standby power consumption, and the earphone is prevented from consuming the electric quantity of the terminal.
The examples of the embodiment of the present invention are intended to concisely illustrate the technical features of the embodiments of the present invention, so that a person skilled in the art can visually understand the technical features of the embodiments of the present invention, and do not act as an improper limitation of the embodiments of the present invention.
While the foregoing description shows and describes several preferred embodiments of the present invention, it is to be understood, as noted above, that the embodiments are not limited to the forms disclosed herein, but are not to be considered as exclusive of other embodiments, and are capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. Modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the embodiments of the invention, which should be limited only by the claims appended hereto.
Claims (10)
1. An earphone, comprising: the device comprises a microphone, a current-limiting resistor, an on-off switch, an encoder and a controller; wherein,
the signal end of the microphone is connected with the encoder through a microphone wire of the earphone, a first auxiliary end of the microphone is connected with one end of the on-off switch, and a grounding end and a second auxiliary end of the microphone are both grounded;
one end of the current-limiting resistor is connected with the grounding end of the microphone, and the other end of the current-limiting resistor is connected with the other end of the on-off switch;
the controller is used for controlling the on-off state of the on-off switch according to whether the encoder encodes the audio signal from the microphone or not, and is respectively connected with the control end of the on-off switch and the encoder.
2. The headset of claim 1, wherein the on-off switch is an analog switch chip;
the control end of the analog switch chip is connected with the controller, the public end of the analog switch chip is connected with the first auxiliary end of the microphone, and the normally open end of the analog switch chip is connected with the current-limiting resistor.
3. The headset of claim 1, wherein the on-off switch is a single pole double throw switch;
the control end of the single-pole double-throw switch is connected with the controller, the moving end of the single-pole double-throw switch is connected with the first auxiliary end of the microphone, the first fixed end of the single-pole double-throw switch is connected with the current-limiting resistor, and the second fixed end of the single-pole double-throw switch is a disconnected end.
4. The headset of claim 1, further comprising: a main control board;
the controller, the encoder and the microphone are all arranged on the main control board;
the main control board is also provided with a function key, one end of the function key is connected with the microphone wire of the earphone, and the other end of the function key is grounded.
5. The headset of claim 4, wherein the function keys comprise: a pause key, a volume up key, and a volume down key are actuated.
6. The headset of any of claims 1-5, further comprising: a sensitivity resistor and a sensitivity capacitor;
one end of the sensitivity resistor is grounded, and the other end of the sensitivity resistor is connected with one end of the sensitivity capacitor;
the other end of the sensitivity capacitor is connected with a first auxiliary end of the microphone.
7. The earphone according to claim 6, wherein the capacitance value of the sensitivity capacitance is in the range of 1-3 μ F;
the resistance value range of the sensitivity resistor is 2-5K omega.
8. The headset of any one of claims 1-5, further comprising: at least two filter capacitors;
one end of the filter capacitor is connected with the microphone line of the earphone, and the other end of the filter capacitor is grounded.
9. The headset of any one of claims 1-5, further comprising: an anti-magnetic coil and an anti-static diode;
the antimagnetic coil is connected to a microphone wire of the earphone;
and one end of the anti-static diode is connected with the antimagnetic coil, and the other end of the anti-static diode is grounded.
10. The earphone as claimed in claim 9, wherein the number of the antimagnetic coils is in the range of 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 |
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| CN208285492U true CN208285492U (en) | 2018-12-25 |
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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 |
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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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