CN210469692U - Earphone reset control circuit and bluetooth headset - Google Patents
Earphone reset control circuit and bluetooth headset Download PDFInfo
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- CN210469692U CN210469692U CN201921823422.3U CN201921823422U CN210469692U CN 210469692 U CN210469692 U CN 210469692U CN 201921823422 U CN201921823422 U CN 201921823422U CN 210469692 U CN210469692 U CN 210469692U
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Abstract
The utility model relates to an earphone technical field discloses an earphone reset control circuit and bluetooth headset. The Bluetooth headset comprises a Bluetooth chip and a headset reset control circuit; the earphone reset control circuit comprises a reset control chip and a switch unit; the reset control chip comprises a first pin and a second pin; the first pin is electrically connected with a charging interface of the earphone box; the second pin is connected to the Bluetooth chip through a switch unit; when the first pin receives a reset instruction, the reset control chip controls the switch unit to be switched on, and triggers the Bluetooth chip to execute reset operation. The utility model adds an earphone reset control circuit between the earphone box and the Bluetooth earphone, when the reset control chip detects a valid reset instruction, the control switch unit is conducted to trigger the Bluetooth chip to execute the reset operation; when the Bluetooth chip is not detected, the control switch unit is switched off, and the Bluetooth chip does not execute reset operation, so that the Bluetooth chip can obtain stable pulse, the reliability is improved, and the power consumption can be reduced.
Description
Technical Field
The utility model relates to an earphone technical field especially relates to an earphone reset control circuit and bluetooth headset.
Background
With the progress of society and the improvement of the level of science and technology, more and more people begin to pay attention to the improvement of life quality, more and more people begin to use some audio-visual products, such as smart phones and wireless earphones, and the products greatly facilitate the life of human beings and also provide more fun for the human beings. Especially, the bluetooth headset, the user can liberate both hands completely to communicate with other people and enjoy music without constraint, so the wireless headset is popular with more and more users.
In recent years, a TWS (True Wireless Stereo) bluetooth headset has become the first choice for most users because it can achieve True Wireless Stereo audio transmission. The TWS product has a complex working mechanism and a huge software structure, and may work abnormally from time to time, and in order to avoid this, the reset operation is usually performed on the earphone to ensure that the earphone works in a normal state. Since TWS products are typically of a one-button design or even a keyless design, the transfer of the reset signal is typically performed using the charging contact between the charging box and the headset.
At present, including MCU and the lid detection circuitry who is used for detecting the lid switch in the box that charges, including the bluetooth chip in the bluetooth headset, MCU is connected through the pin electricity that resets of the interface with the bluetooth chip that charges. The reset control process of the bluetooth headset is generally as follows: when the box cover detection circuit detects that the cover of the charging box is closed, the MCU of the charging box firstly sends a Bluetooth closing instruction to the Bluetooth chip of the Bluetooth earphone, and the Bluetooth chip executes shutdown operation after receiving the Bluetooth closing instruction; after the specified interval time, the MCU of the charging box sends a reset instruction to the Bluetooth chip of the Bluetooth earphone, and the Bluetooth chip executes reset operation after receiving the reset instruction. In the reset implementation scheme, the MCU is directly and electrically connected with the Bluetooth chip through the charging interface, and the Bluetooth chip is in a power-down state after shutdown operation is executed, so that the Bluetooth chip cannot stably receive a reset instruction sent by a subsequent MCU, and error reset or a halt phenomenon is easily caused. There is thus a need to provide an efficient solution.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an earphone reset control circuit and bluetooth headset way, solve the problem that the easy emergence mistake that prior art exists resets or the condition of halting, promote the user and use experience.
To achieve the purpose, the utility model adopts the following technical proposal:
an earphone reset control circuit comprises a reset control chip and a switch unit;
the reset control chip at least comprises: a first pin and a second pin; the first pin is electrically connected with a charging interface of the earphone box; the second pin is connected to a Bluetooth chip of the Bluetooth headset through the switch unit; when the first pin receives a reset instruction, the reset control chip controls the switch unit to be switched on, and triggers the Bluetooth chip to execute reset operation.
Optionally, the reset control chip further includes a third pin, and the third pin is electrically connected to a battery of the bluetooth headset.
Optionally, the switch unit is an NPN triode; and the base electrode of the NPN triode is connected with the second pin, the collector electrode of the NPN triode is connected with the reset pin of the Bluetooth chip, and the emitter electrode of the NPN triode is grounded.
Optionally, the switching unit is an MOS transistor.
Optionally, the reset command is a regular sequence level signal.
A Bluetooth headset comprises a Bluetooth chip and a headset reset control circuit;
the earphone reset control circuit comprises a reset control chip and a switch unit; the reset control chip at least comprises a first pin and a second pin; the first pin is electrically connected with a charging interface of the earphone box; the second pin is connected to the Bluetooth chip through the switch unit; when the first pin receives a reset instruction, the reset control chip controls the switch unit to be switched on, and triggers the Bluetooth chip to execute reset operation.
Optionally, the bluetooth headset further includes a battery, and the reset control chip further includes a third pin, where the third pin is electrically connected to the battery.
Optionally, the switch unit is an NPN triode; and the base electrode of the NPN triode is connected with the second pin, the collector electrode of the NPN triode is connected with the reset pin of the Bluetooth chip, and the emitter electrode of the NPN triode is grounded.
Optionally, the switching unit is an MOS transistor.
Optionally, the reset command is a regular sequence level signal.
Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:
the embodiment of the utility model provides an earphone reset control circuit including reset control chip and switch unit has been add between earphone box and bluetooth headset's bluetooth chip, and when the reset control chip detected effectual reset instruction, the control switch unit switched on, and then triggered the bluetooth chip and carried out the operation that resets; when an effective reset instruction is not detected, the control switch unit is switched off, and the Bluetooth chip does not execute reset operation, so that the Bluetooth chip can be ensured to obtain stable pulse, the reliability is improved, and the power consumption of the Bluetooth chip can be reduced.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a conventional bluetooth headset and a conventional bluetooth headset case.
Fig. 2 is a schematic structure diagram of the bluetooth headset and the headset case provided in the embodiment of the present invention.
Fig. 3 is a circuit diagram of a reset control chip portion of an earphone reset control circuit according to a first embodiment of the present invention;
fig. 4 is a circuit diagram of a switch unit portion of the earphone reset control circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides an earphone reset control circuit, this circuit can be placed in bluetooth headset in, is used for realizing the reset control of bluetooth headset, and it can control the switch unit to switch on when detecting appointed reset instruction, and then triggers the bluetooth chip to carry out the reset operation; when the appointed reset instruction is not detected, the control switch unit is switched off, and the Bluetooth chip is not triggered to execute the reset operation.
Referring to fig. 2 to 4, an embodiment of the present invention provides an earphone reset control circuit, which includes: the reset control chip is electrically connected with the switch unit.
The reset control chip at least comprises: the circuit comprises a first pin, a second pin and a third pin.
The first pin is electrically connected with a charging interface in the earphone box and used for receiving a reset instruction from the MCU in the earphone box;
the second pin is electrically connected with the control end of the switch unit and used for sending a level signal for controlling the on-off of the switch unit;
and the third pin is electrically connected with a battery inside the Bluetooth headset and used for receiving a charging signal of the battery and realizing power supply to the reset control chip.
And the switch unit is connected between the reset control chip and the Bluetooth chip of the Bluetooth headset, and the on-off of the switch unit is controlled by the reset control chip so as to realize the function of stabilizing pulses.
The working principle of the earphone reset control circuit is as follows:
when the first pin of the reset control chip receives a reset instruction, the reset control chip outputs a conducting signal to the switch unit through the second pin so as to conduct the switch unit, and triggers the Bluetooth chip to execute reset operation;
when the signal received by the first pin of the reset control chip is not a reset instruction, the reset control chip outputs a disconnection signal to the switch unit through the second pin so as to disconnect the switch unit, and the Bluetooth chip is not triggered to execute the reset operation;
in the working process of the reset control chip, a battery in the Bluetooth headset supplies power to the reset control chip through the third pin so as to ensure that the reset control chip can continuously work.
Compared with the traditional mode that the MCU in the earphone box is directly and electrically connected with the Bluetooth chip in the Bluetooth earphone, the earphone reset control circuit comprising the reset control chip and the switch unit is additionally arranged between the MCU and the Bluetooth chip, and the reset control chip controls the switch unit to be conducted when detecting an effective reset signal, so that the Bluetooth chip is triggered to execute the reset operation; when an invalid reset signal is detected, the control switch unit is switched off, and the Bluetooth chip does not execute reset operation, so that the Bluetooth chip can be ensured to obtain stable pulse, the reliability is improved, and the power consumption of the Bluetooth chip can be reduced.
Referring to fig. 3 and 4, in the present embodiment, the reset control chip is a BJ8P511A chip, and the switch unit is an NPN transistor Q1.
The BJ8P511A chip comprises an IOB1 pin, an IOB2 pin, an IOB3 pin, an IOB4 pin, a VDD pin and a GND pin.
The IOB4 pin is used as a first pin and is electrically connected with a charging interface VCHG of the earphone box; specifically, the IOB4 pin is connected to VCHG through a resistor R3, and is grounded through a resistor R6;
the IOB1 pin, as a second pin, is connected to the base stage of an NPN triode Q1 through a resistor R7;
the VDD pin is connected to the battery VBAT as a third pin.
An NPN triode Q1, the base of which is connected with the IOB1 pin of the BJ8P511A chip and is grounded through a resistor R2; its collector is connected to the reset pin RST of the bluetooth chip and its emitter is grounded.
When the IOB4 pin of the BJ8P511A chip receives a valid reset command, the BJ8P511A chip outputs a high level, and the high level is output to the base of the NPN triode Q1 through the IOB1 pin, so that the NPN triode Q1 is turned on, and the collector of the NPN triode Q1 is at a low level, thereby triggering the bluetooth chip to perform a reset operation.
In other embodiments, the switching unit may be other switching circuits, such as a MOS transistor, besides the NPN transistor.
Due to the fact that the working mechanism is complex, the software structure is huge, and abnormal phenomena easily occur to Bluetooth chip software. In the traditional reset control scheme, a 5V charging wire is directly connected to a Bluetooth reset pin, a large number of peripheral elements are required to be added to control a reset circuit, or a Bluetooth headset is placed into a charging box to reset.
In order to reduce the component on the bluetooth headset mainboard in order to save mainboard space and realize the communication between intelligent charging box and the bluetooth headset, the hardware only needs a small amount of components on the bluetooth headset in this embodiment, owing to the effect of charging and communicating with the bluetooth headset is compromise to the 5V charging wire between charging box and the bluetooth headset. As long as the bluetooth headset puts into the box that charges, the bluetooth headset will detect 5V's high level and charge for the headset and the box that charges can with cross 5V charging wire send command and reset chip communication simultaneously. The instruction specifically can be regular sequence signal, and the box that charges sends through the charging wire after closing the lid and shuts down and reset the instruction and let the earphone reset for the chip that resets, and the box that charges sends the start instruction through the charging wire when uncapping and resets the chip and let the earphone start for the chip that resets. This embodiment adopts the dual guarantee that resets of chip and bluetooth chip that resets, but greatly reduced earphone probability of dying down is different from traditional bluetooth headset and puts into the box that charges and directly resets for the bluetooth chip through 5V, can effectively avoid the user to put into the earphone with the earphone and put into again and take out the mistake that leads to reset and reduce bluetooth headset probability of dying down fast behind the box that charges.
This embodiment also provides a bluetooth headset, it includes: the earphone reset control circuit comprises a Bluetooth chip, a battery and the earphone reset control circuit; the earphone reset control circuit is respectively connected with the Bluetooth chip and the battery.
This bluetooth headset owing to adopted foretell earphone reset control circuit, can effectively improve reset control's reliability, reduce the consumption, promote user and use experience.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. The earphone reset control circuit is characterized by comprising a reset control chip and a switch unit;
the reset control chip at least comprises: a first pin and a second pin; the first pin is electrically connected with a charging interface of the earphone box; the second pin is connected to a Bluetooth chip of the Bluetooth headset through the switch unit; when the first pin receives a reset instruction, the reset control chip controls the switch unit to be switched on, and triggers the Bluetooth chip to execute reset operation.
2. The headset reset control circuit of claim 1, wherein the reset control chip further comprises a third pin, the third pin being electrically connected to a battery of the bluetooth headset.
3. The earphone reset control circuit according to claim 1, wherein the switching unit is an NPN transistor; and the base electrode of the NPN triode is connected with the second pin, the collector electrode of the NPN triode is connected with the reset pin of the Bluetooth chip, and the emitter electrode of the NPN triode is grounded.
4. The earphone reset control circuit according to claim 1, wherein the switching unit is a MOS transistor.
5. The headphone reset control circuit of claim 1, wherein the reset command is a regular sequence of level signals.
6. A Bluetooth headset comprises a Bluetooth chip and is characterized by further comprising a headset reset control circuit;
the earphone reset control circuit comprises a reset control chip and a switch unit; the reset control chip at least comprises a first pin and a second pin; the first pin is electrically connected with a charging interface of the earphone box; the second pin is connected to the Bluetooth chip through the switch unit; when the first pin receives a reset instruction, the reset control chip controls the switch unit to be switched on, and triggers the Bluetooth chip to execute reset operation.
7. The bluetooth headset of claim 6, wherein the bluetooth headset further comprises a battery, and wherein the reset control chip further comprises a third pin, and wherein the third pin is electrically connected to the battery.
8. The bluetooth headset according to claim 6, wherein the switching unit is an NPN transistor; and the base electrode of the NPN triode is connected with the second pin, the collector electrode of the NPN triode is connected with the reset pin of the Bluetooth chip, and the emitter electrode of the NPN triode is grounded.
9. The bluetooth headset according to claim 6, wherein the switching unit is a MOS transistor.
10. The bluetooth headset of claim 6, wherein the reset command is a regular sequence of level signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921823422.3U CN210469692U (en) | 2019-10-28 | 2019-10-28 | Earphone reset control circuit and bluetooth headset |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921823422.3U CN210469692U (en) | 2019-10-28 | 2019-10-28 | Earphone reset control circuit and bluetooth headset |
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| CN210469692U true CN210469692U (en) | 2020-05-05 |
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| CN201921823422.3U Active CN210469692U (en) | 2019-10-28 | 2019-10-28 | Earphone reset control circuit and bluetooth headset |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115514395A (en) * | 2021-06-22 | 2022-12-23 | Oppo广东移动通信有限公司 | Operation control method, device, wireless operation system and storage medium |
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2019
- 2019-10-28 CN CN201921823422.3U patent/CN210469692U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115514395A (en) * | 2021-06-22 | 2022-12-23 | Oppo广东移动通信有限公司 | Operation control method, device, wireless operation system and storage medium |
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