CN204929189U - Automatic switch -over circuit of bluetooth headset and wired earphone - Google Patents
Automatic switch -over circuit of bluetooth headset and wired earphone Download PDFInfo
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- CN204929189U CN204929189U CN201520611365.8U CN201520611365U CN204929189U CN 204929189 U CN204929189 U CN 204929189U CN 201520611365 U CN201520611365 U CN 201520611365U CN 204929189 U CN204929189 U CN 204929189U
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- earphone
- bluetooth earphone
- bluetooth
- switching tube
- wired
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- 239000004065 semiconductor Substances 0.000 claims description 12
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000004904 shortening Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
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Abstract
The utility model relates to an earphone control technical field especially relates to an automatic switch -over circuit of bluetooth headset and wired earphone. The utility model discloses in, automatic switch -over circuit of bluetooth headset and wired earphone includes the female seat of wired earphone, power module, bluetooth headset control module, bluetooth headset restore to the throne module and speaker. When inserting wired earphone, the bluetooth headset pair of module that resets bluetooth headset control module resets, self -closing bluetooth headset to realized the automatic switch -over between bluetooth headset and the wired earphone, avoided under wired headset mode bluetooth headset still to be in and opened the state and cause the waste of electric quantity and shortening of bluetooth headset life.
Description
Technical field
The utility model relates to earphone control technology field, particularly relates to the automatic switch-over circuit of a kind of bluetooth earphone and wired earphone.
Background technology
Along with the development of intelligent terminal technology, earphone has become requisite electronic components in people's daily life, and earphone is mainly divided into bluetooth earphone and wired earphone.
In prior art; when bluetooth earphone and wired earphone switch, often can run into such situation: after insertion wired earphone, bluetooth earphone is still in opening; can't automatically close; need manually to go to close, like this, not only loaded down with trivial details; if forget closedown bluetooth earphone after insertion wired earphone; then bluetooth earphone is in opening always, causes the waste of electricity, and shortens the useful life of bluetooth earphone.
Utility model content
The purpose of this utility model is the automatic switch-over circuit providing a kind of bluetooth earphone and wired earphone, be intended to solve in prior art when bluetooth earphone and wired ear carry out machine switch time, bluetooth earphone is still in opening, automatically can not close, cause the problem of electricity waste and bluetooth earphone shortening in useful life.
The utility model is achieved in that the automatic switch-over circuit of a kind of bluetooth earphone and wired earphone, comprises wired socket and headset, and the automatic switch-over circuit of described bluetooth earphone and wired earphone also comprises:
Power module;
Be connected with described power module, control the bluetooth earphone control module that bluetooth earphone is opened or closed;
Be connected with described power module and described bluetooth earphone control module respectively, when wired earphone inserts described socket and headset, described bluetooth earphone control module resetted, automatically close the bluetooth earphone reseting module of bluetooth earphone;
Be connected with described wired earphone female seat, power module and bluetooth earphone control module respectively, the loud speaker of output audio.
Further, described power module comprises current-limiting resistance R1, the first termination 1.8V voltage of described current-limiting resistance R1.
Further, described loud speaker comprises left speaker SPK_L and right loud speaker SPK_R;
The first end ground connection of described left speaker SPK_L, the second end connects the first segment L of described socket and headset, second end of described current-limiting resistance R1 and described bluetooth earphone control module respectively;
The first end ground connection of described right loud speaker SPK_R, the second end connects the second section R of described socket and headset and described bluetooth earphone control module respectively.
Further, described bluetooth earphone control module adopts Bluetooth control chip U1;
First left speaker of described Bluetooth control chip U1 controls pin SPKP_LP and connects second end of described current-limiting resistance R1 and second end of described left speaker SPK_L respectively; The first right loud speaker of described Bluetooth control chip U1 controls the second end that pin SPKP_RP meets described right loud speaker SPK_R; Second left speaker of described Bluetooth control chip U1 controls pin SPKP_LN and the second right loud speaker controls pin SPKP_RN ground connection.
Further, described bluetooth earphone reseting module comprises divider resistance R2, switching capacity C1, switching tube and pull down resistor R3;
The control end of described switching tube connects second end of described current-limiting resistance R1 by described divider resistance R2, simultaneously by described switching capacity C1 ground connection; The hot end of described switching tube meets the resetting pin RESET of described Bluetooth control chip U1 by described pull down resistor R3; The cold end ground connection of described switching tube.
Further, described switching tube adopts NPN type triode Q1, the base stage of described NPN type triode Q1 is the control end of described switching tube, the hot end of the very described switching tube of current collection of described NPN type triode Q1, the cold end of the very described switching tube of transmitting of described NPN type triode Q1.
Further, described switching tube adopts N-type metal-oxide-semiconductor Q2, the grid of described N-type metal-oxide-semiconductor Q2 is the control end of described switching tube, and the drain electrode of described N-type metal-oxide-semiconductor Q2 is the hot end of described switching tube, and the source electrode of described N-type metal-oxide-semiconductor Q2 is the cold end of described switching tube.
In the utility model, the automatic switch-over circuit of bluetooth earphone and wired earphone comprises wired socket and headset, power module, bluetooth earphone control module, bluetooth earphone reseting module and loud speaker.When inserting wired earphone, described bluetooth earphone reseting module resets to described bluetooth earphone control module, automatic closedown bluetooth earphone, thus the automatic switchover achieved between bluetooth earphone and wired earphone, avoid bluetooth earphone under wired earphone pattern and be still in opening and cause the waste of electricity and the shortening in bluetooth earphone useful life.
Accompanying drawing explanation
Fig. 1 is the module map of the automatic switch-over circuit of the bluetooth earphone that provides of the utility model embodiment and wired earphone;
Fig. 2 is the circuit diagram of the automatic switch-over circuit of the bluetooth earphone that provides of the utility model first embodiment and wired earphone;
Fig. 3 is the circuit diagram of the automatic switch-over circuit of the bluetooth earphone that provides of the utility model second embodiment and wired earphone.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows the module map of the automatic switch-over circuit of bluetooth earphone that the utility model embodiment provides and wired earphone.For convenience of explanation, illustrate only the part relevant to the utility model embodiment.
The automatic switch-over circuit of bluetooth earphone and wired earphone comprises:
Wired earphone female seat 01;
Power module 02;
Be connected with described power module 02, control the bluetooth earphone control module 03 that bluetooth earphone is opened or closed;
Be connected with described power module 02 and described bluetooth earphone control module 03 respectively, when wired earphone inserts described socket and headset, described bluetooth earphone control module resetted, automatically close the bluetooth earphone reseting module 04 of bluetooth earphone;
Be connected with described wired earphone female seat 01, power module 02 and bluetooth earphone control module 03 respectively, the loud speaker 05 of output audio.
First embodiment
Fig. 2 shows the circuit diagram of the automatic switch-over circuit of bluetooth earphone that the utility model first embodiment provides and wired earphone.For convenience of explanation, illustrate only the part relevant to the utility model embodiment.
As an embodiment of the present utility model, power module 02 comprises a current-limiting resistance R1, the first termination 1.8V voltage of current-limiting resistance R1.
Loud speaker 05 comprises left speaker SPK_L and right loud speaker SPK_R;
The first end ground connection of left speaker SPK_L, the second end connects the first segment L of socket and headset 01, second end of current-limiting resistance R1 and described bluetooth earphone control module 03 respectively;
The first end ground connection of right loud speaker SPK_R, the second end connects second section R and the bluetooth earphone control module 03 of socket and headset 01 respectively.
Bluetooth earphone control module 03 adopts Bluetooth control chip U1;
First left speaker of Bluetooth control chip U1 controls pin SPKP_LP and connects second end of current-limiting resistance R1 and second end of left speaker SPK_L respectively; The first right loud speaker of Bluetooth control chip U1 controls the second end that pin SPKP_RP meets right loud speaker SPK_R; Second left speaker of Bluetooth control chip U1 controls pin SPKP_LN and the second right loud speaker controls pin SPKP_RN ground connection.
Bluetooth earphone reseting module 04 comprises divider resistance R2, switching capacity C1, switching tube 041 and pull down resistor R3;
The control end of switching tube 041 connects second end of current-limiting resistance R1 by divider resistance R2, simultaneously by switching capacity C1 ground connection; The hot end of switching tube 041 meets the resetting pin RESET of Bluetooth control chip U1 by described pull down resistor R3; The cold end ground connection of switching tube 041.
As an embodiment of the present utility model, described switching tube 041 adopts NPN type triode Q1, the base stage of NPN type triode Q1 is the control end of described switching tube 041, the hot end of the very described switching tube 041 of current collection of NPN type triode Q1, the cold end of the very described switching tube 041 of transmitting of NPN type triode Q1.
Second embodiment
Fig. 3 shows the circuit diagram of the automatic switch-over circuit of bluetooth earphone that the utility model second embodiment provides and wired earphone.For convenience of explanation, illustrate only the part relevant to the utility model embodiment.
As an embodiment of the present utility model, power module 02 comprises a current-limiting resistance R1, the first termination 1.8V voltage of current-limiting resistance R1.
Loud speaker 05 comprises left speaker SPK_L and right loud speaker SPK_R;
The first end ground connection of left speaker SPK_L, the second end connects the first segment L of socket and headset 01, second end of current-limiting resistance R1 and described bluetooth earphone control module 03 respectively;
The first end ground connection of right loud speaker SPK_R, the second end connects second section R and the bluetooth earphone control module 03 of socket and headset 01 respectively.
Bluetooth earphone control module 03 adopts Bluetooth control chip U1;
First left speaker of Bluetooth control chip U1 controls pin SPKP_LP and connects second end of current-limiting resistance R1 and second end of left speaker SPK_L respectively; The first right loud speaker of Bluetooth control chip U1 controls the second end that pin SPKP_RP meets right loud speaker SPK_R; Second left speaker of Bluetooth control chip U1 controls pin SPKP_LN and the second right loud speaker controls pin SPKP_RN ground connection.
Bluetooth earphone reseting module 04 comprises divider resistance R2, switching capacity C1, switching tube 041 and pull down resistor R3;
The control end of switching tube 041 connects second end of current-limiting resistance R1 by divider resistance R2, simultaneously by switching capacity C1 ground connection; The hot end of switching tube 041 meets the resetting pin RESET of Bluetooth control chip U1 by described pull down resistor R3; The cold end ground connection of switching tube 041.
As an embodiment of the present utility model, described switching tube 041 adopts N-type metal-oxide-semiconductor Q2, the grid of N-type metal-oxide-semiconductor Q2 is the control end of described switching tube 041, and the drain electrode of N-type metal-oxide-semiconductor Q2 is the hot end of described switching tube 041, and the source electrode of N-type metal-oxide-semiconductor Q2 is the cold end of described switching tube 041.
Below in conjunction with operation principle, the automatic switch-over circuit of above-mentioned bluetooth earphone and wired earphone is described further (for the first embodiment, the second embodiment operation principle is identical with the first embodiment operation principle):
As shown in Figure 2, when not inserting 3.5mm wired earphone, namely under bluetooth earphone pattern, 1,2 pins of socket and headset 01 and the conducting respectively of 3,4 pins.Because the resistance of current-limiting resistance R1 and divider resistance R2 is larger, and the impedance of loud speaker is 32 ohm, so 1.8V voltage is through current-limiting resistance R1 and left speaker SPK_L ground connection, 2,1 pin conducting, left speaker SPK_L works, and the base stage of triode Q1 is low level, triode Q1 not conducting, 4,3 pin conductings, right loud speaker SPK_R works.
When inserting 3.5mm wired earphone, namely under wired earphone pattern, 1,2 pins and 3,4 pins of socket and headset 01 disconnect respectively, 1.8V voltage charges to derided capacitors C1 through current-limiting resistance R1 and divider resistance R2, when charging is complete, triode Q1 base stage is high level, triode Q1 conducting, collector potential is dragged down, Bluetooth control chip U1 low level resets, now Bluetooth control chip U1 does not work, and left and right sound track signals is exported by loud speaker respectively through after 1 pin of wired earphone female seat 01 and 3 pins.
For ensureing that, under bluetooth earphone pattern, 1.8V voltage does not have an impact to loud speaker, current-limiting resistance R1 is the larger resistance of choosing as far as possible, general selection tens more than K; For prevent the resetting pin of Bluetooth control chip U1 draw for a long time ground and damage Bluetooth control chip U1 internal structure, the optional 10K of R3; The choosing value of current-limiting resistance R1, divider resistance R3 and derided capacitors C1 can affect the resetting time of Bluetooth control chip U1, so derided capacitors C1 generally selects between 100nF to 1uF, current-limiting resistance R1 is identical with divider resistance R2 choosing value; Wired earphone female seat selects first segment and the audio socket of second section respectively with normally closed switch.
In the utility model, the automatic switch-over circuit of this bluetooth earphone and wired earphone comprises wired socket and headset, power module, bluetooth earphone control module, bluetooth earphone reseting module and loud speaker.When inserting wired earphone, described bluetooth earphone reseting module resets to described bluetooth earphone control module, automatic closedown bluetooth earphone, thus the automatic switchover achieved between bluetooth earphone and wired earphone, avoid bluetooth earphone under wired earphone pattern and be still in opening and cause the waste of electricity and the shortening in bluetooth earphone useful life.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (7)
1. an automatic switch-over circuit for bluetooth earphone and wired earphone, comprises wired socket and headset, it is characterized in that, the automatic switch-over circuit of described bluetooth earphone and wired earphone also comprises:
Power module;
Be connected with described power module, control the bluetooth earphone control module that bluetooth earphone is opened or closed;
Be connected with described power module and described bluetooth earphone control module respectively, when wired earphone inserts described socket and headset, described bluetooth earphone control module resetted, automatically close the bluetooth earphone reseting module of bluetooth earphone;
Be connected with described wired earphone female seat, power module and bluetooth earphone control module respectively, the loud speaker of output audio.
2. the automatic switch-over circuit of bluetooth earphone as claimed in claim 1 and wired earphone, it is characterized in that, described power module comprises current-limiting resistance R1, the first termination 1.8V voltage of described current-limiting resistance R1.
3. the automatic switch-over circuit of bluetooth earphone as claimed in claim 2 and wired earphone, it is characterized in that, described loud speaker comprises left speaker SPK_L and right loud speaker SPK_R;
The first end ground connection of described left speaker SPK_L, the second end connects the first segment L of described socket and headset, second end of described current-limiting resistance R1 and described bluetooth earphone control module respectively;
The first end ground connection of described right loud speaker SPK_R, the second end connects the second section R of described socket and headset and described bluetooth earphone control module respectively.
4. the automatic switch-over circuit of bluetooth earphone as claimed in claim 3 and wired earphone, is characterized in that, described bluetooth earphone control module adopts Bluetooth control chip U1;
First left speaker of described Bluetooth control chip U1 controls pin SPKP_LP and connects second end of described current-limiting resistance R1 and second end of described left speaker SPK_L respectively; The first right loud speaker of described Bluetooth control chip U1 controls the second end that pin SPKP_RP meets described right loud speaker SPK_R; Second left speaker of described Bluetooth control chip U1 controls pin SPKP_LN and the second right loud speaker controls pin SPKP_RN ground connection.
5. the automatic switch-over circuit of bluetooth earphone as claimed in claim 4 and wired earphone, it is characterized in that, described bluetooth earphone reseting module comprises divider resistance R2, switching capacity C1, switching tube and pull down resistor R3;
The control end of described switching tube connects second end of described current-limiting resistance R1 by described divider resistance R2, simultaneously by described switching capacity C1 ground connection; The hot end of described switching tube meets the resetting pin RESET of described Bluetooth control chip U1 by described pull down resistor R3; The cold end ground connection of described switching tube.
6. the automatic switch-over circuit of bluetooth earphone as claimed in claim 5 and wired earphone, it is characterized in that, described switching tube adopts NPN type triode Q1, the base stage of described NPN type triode Q1 is the control end of described switching tube, the hot end of the very described switching tube of current collection of described NPN type triode Q1, the cold end of the very described switching tube of transmitting of described NPN type triode Q1.
7. the automatic switch-over circuit of bluetooth earphone as claimed in claim 5 and wired earphone, it is characterized in that, described switching tube adopts N-type metal-oxide-semiconductor Q2, the grid of described N-type metal-oxide-semiconductor Q2 is the control end of described switching tube, the drain electrode of described N-type metal-oxide-semiconductor Q2 is the hot end of described switching tube, and the source electrode of described N-type metal-oxide-semiconductor Q2 is the cold end of described switching tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520611365.8U CN204929189U (en) | 2015-08-13 | 2015-08-13 | Automatic switch -over circuit of bluetooth headset and wired earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520611365.8U CN204929189U (en) | 2015-08-13 | 2015-08-13 | Automatic switch -over circuit of bluetooth headset and wired earphone |
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| Publication Number | Publication Date |
|---|---|
| CN204929189U true CN204929189U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520611365.8U Expired - Fee Related CN204929189U (en) | 2015-08-13 | 2015-08-13 | Automatic switch -over circuit of bluetooth headset and wired earphone |
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| CN (1) | CN204929189U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107343241A (en) * | 2017-09-01 | 2017-11-10 | 深圳市中芯微电子有限公司 | A kind of USB power supply wire and wireless one digital earphones and audio-frequency amplifier |
| CN108495220A (en) * | 2018-01-30 | 2018-09-04 | 歌尔科技有限公司 | A kind of Bluetooth earphone circuit and bluetooth headset |
-
2015
- 2015-08-13 CN CN201520611365.8U patent/CN204929189U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107343241A (en) * | 2017-09-01 | 2017-11-10 | 深圳市中芯微电子有限公司 | A kind of USB power supply wire and wireless one digital earphones and audio-frequency amplifier |
| CN107343241B (en) * | 2017-09-01 | 2023-09-22 | 深圳市中芯微电子有限公司 | USB power supply wired wireless integrated digital earphone and audio amplifier |
| CN108495220A (en) * | 2018-01-30 | 2018-09-04 | 歌尔科技有限公司 | A kind of Bluetooth earphone circuit and bluetooth headset |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Longgang District of Shenzhen City, Guangdong province 518116 Ping Street Takahashi Industrial Park East Area Patentee after: SHENZHEN GRANDSUN ELECTRONIC Co.,Ltd. Address before: Longgang District of Shenzhen City, Guangdong province 518116 Ping Street Takahashi Industrial Park East Area Patentee before: SHENZHEN GRANDSUN ELECTRONIC Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |