CN218352678U - Earphone in-out box detection device and TWS earphone - Google Patents

Abstract

The application belongs to the technical field of electronic circuits, and particularly relates to an earphone in-out box detection device and a TWS earphone. The earphone in-out box detection device comprises an interface terminal, a detection circuit and a processor, wherein the interface terminal is used for being electrically connected with a charging box to transmit electric energy or data, the detection circuit is connected with the interface terminal and used for detecting the voltage of the interface terminal and outputting a detection level at a detection end, the processor is connected with the detection circuit and used for detecting the level state of the detection level once every preset time to judge the earphone state, and the earphone in-box detection device judges that the detection level is a high level when the detection level is detected for continuous preset times; and when the detection level is detected to be a low level for continuous preset times, judging that the earphone is taken out of the box. This application has realized the box detection of cominging in and going out accurately reliably, has solved the earphone under communication mode or has come in and go out the box shake and lead to the problem that earphone cominging in and going out box attitude misjudgement, and circuit structure is simple easily realizes.

Description

Earphone in-out box detection device and TWS earphone

Technical Field

The application belongs to the technical field of electronic circuits, especially, relate to earphone discrepancy box detection device and TWS earphone.

Background

With the development of wireless communication technology, the trend of intellectualization and wireless technology has been deeply embodied in wireless headset products such as bluetooth headset. Currently, a True Wireless Stereo (TWS) headset that appears recently is a typical Wireless headset product with a good combination of intelligent and Wireless trends, and such Wireless headset products often need to be equipped with a charging box with a function of storing and charging, and the charging box has functions of charging the headset and transmitting pairing commands. The charging box needs to detect the earphone entering the box in time when the earphone enters the box, then the earphone is charged, and a series of information interaction is carried out.

In the prior art, the charging box and the TWS earphone are charged and communicated through the contact, and the earphone is detected to enter the charging box and whether the earphone is in the charging box or not is judged through the contact between the charging box and the TWS earphone, so that when the charging box and the earphone are communicated, level signals of the contact are uncertain, the condition that the earphone enters the charging box and goes out of the charging box is misjudged, and the use experience is influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present application provides an apparatus for detecting an earphone in and out box and a TWS earphone, which aim to solve the problem of misjudgment of the state of the earphone in and out box caused by the shake of the earphone in and out box or the communication mode of the earphone.

A first aspect of the embodiments of the present application provides an apparatus for detecting an earphone entering and exiting box, including: the interface terminal is used for electrically connecting with the charging box so as to transmit electric energy or data; the detection circuit is connected with the interface terminal and is used for detecting the voltage of the interface terminal and outputting a detection level at a detection end; the processor is connected with the detection circuit and used for detecting the level state of the detection level once every preset time length so as to judge the state of the earphone, and when the detection level is detected to be high level for continuous preset times, the earphone is judged to be put into the box; and when the detection level is detected to be low level continuously for preset times, judging that the earphone is taken out of the box.

In one embodiment, the processor is further configured to zero a count of detecting that the detection level is low when the headset is operating in the communication mode.

In one embodiment, the system further comprises a communication circuit; the communication circuit is connected with the processor and the interface terminal, and is used for transmitting communication data with the charging box through the interface terminal when the earphone works in a communication mode, and triggering the processor to clear the count of the detected level which is low.

In one embodiment, the device further comprises a charging circuit; the charging circuit is connected with the processor, the interface terminal and the earphone battery, and the processor is also used for controlling the charging circuit to be conducted so as to charge the earphone battery with the electric energy accessed by the interface terminal when detecting that the detection level is a high level.

In one embodiment, the interface terminal includes a positive contact and a negative contact.

In one embodiment, the charging circuit comprises a first switching tube, a first resistor and a charging module unit; the first conducting end of the first switch tube is connected with the positive electrode contact, the second conducting end of the first switch tube is connected with the charging module unit, the control end of the first switch tube is connected with the processor, and the first resistor is connected between the control end of the first switch tube and the first conducting end.

In one embodiment, the detection circuit includes a first voltage-dividing resistor and a second voltage-dividing resistor, the first voltage-dividing resistor and the second voltage-dividing resistor are connected in series between the interface terminal and ground, and a series node of the first voltage-dividing resistor and the second voltage-dividing resistor is connected to the detection terminal.

In one embodiment, the device further comprises a transient suppression diode, wherein a first end of the transient suppression diode is connected with the interface terminal, and a second end of the transient suppression diode is grounded.

In one embodiment, the preset time period is three hundred milliseconds, and the preset number of times is three times.

A second aspect of embodiments of the present application provides a TWS headset including the detection apparatus mentioned in any of the above embodiments.

This application compares beneficial effect with traditional technical scheme is: the earphone discrepancy box detection device that the first aspect of the embodiment of this application provided, in the earphone with charge the box and only pass through interface terminal connection's the condition, interface terminal will support to charge and will support the communication again, detect interface terminal's level state and output detection level through increasing detection circuitry, the level state that the treater detected the level once every preset length of time is in order to judge the earphone state, the treater is continuous to predetermine the number of times and detects that the detection level is high level or low level, in order to judge that the earphone is for going into the box or goes out the box state, realize accurate reliable earphone discrepancy box detection, avoid the earphone under communication mode or go out the problem that the box shake leads to earphone state erroneous judgement, promote user experience.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram illustrating an apparatus for detecting an earphone entering and exiting box according to an embodiment of the present application;

fig. 2 is a schematic diagram of an apparatus for detecting an earphone entering and exiting box according to another embodiment of the present application;

fig. 3 is a schematic circuit diagram of an earphone in-out box detection apparatus according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, a first aspect of the present invention provides an apparatus for detecting an earphone entering/exiting box, including an interface terminal 100, a detection circuit 200, and a processor 300, where the interface terminal 100 is used for electrically connecting with a charging box to transmit power or data. The interface terminal 100 may be provided on the earphone, and communication between the earphone and the charging box or charging of the earphone is performed through the interface terminal 100. It will be appreciated that the interface terminal 100 includes two contacts, one of which serves as a positive pole and the other of which serves as a negative pole.

The detection circuit 200 is connected to the interface terminal 100, and the detection circuit 200 detects the voltage of the interface terminal 100 and outputs a detection level at the detection terminal DET. The processor 300 is connected to the detection circuit 200, and the processor 300 is configured to detect a detection level of the detection terminal DET every preset time period, and determine a state of the headset according to a level state of the detection level, where the state of the headset includes a box-in state and a box-out state.

If the processor 300 detects that the detection level is a high level for a preset number of times, it determines that the earphone is in the box state. If the processor 300 detects that the detection level is in the low level state for a preset number of times, it determines that the earphone is in the out-of-box state.

The earphone in-out box detection device that the first aspect of the embodiment of the application provided, in the condition that the earphone is connected with the box that charges only through interface terminal 100, interface terminal 100 will support charging and will support communication, detect the level state of interface terminal 100 and output the detection level through increasing detection circuit 200, processor 300 detects the level state of this detection level once every preset duration in order to judge the earphone state, processor 300 detects the detection level as high level or low level for continuous preset number of times, in order to judge that the earphone is for going into the box or going out the box state, realize accurate reliable earphone in-out box detection, avoid the earphone in communication mode or go out the problem that the box shake leads to the earphone state erroneous judgement, promote user experience.

It can be understood that the actual values of the preset duration and the preset times in the above embodiments may be set according to actual needs. In some embodiments, the voltage value of the low level of the detection level ranges from 0 to 0.25V, and the voltage value of the high level ranges from 3.5 to 5V. It should be noted that the voltage value ranges of the high level and the low level may be adjusted according to the actual circuit design, and are not limited herein.

Referring to fig. 1, in one embodiment, the processor 300 is further configured to clear the count indicating that the detected detection level is low when the headset is operating in the communication mode. When the earphone works in the communication mode, if the low level is detected, the detected count is cleared, and it is ensured that the low level is not detected continuously for the preset times, which results in the misjudgment of the earphone state.

Referring to fig. 3, in an embodiment, the apparatus for detecting an earphone going in and out of a box further includes a communication circuit 400, and the communication circuit 400 is connected to the processor 300 and the interface terminal 100, and is configured to transmit communication data with the charging box through the interface terminal 100 and trigger the processor 300 to clear a count of a detected level detected as a low level when the earphone is operated in a communication mode. The communication circuit 400 can send a trigger signal to the processor 300 to perform low level counting zero clearing in the communication mode, so as to prevent the headset from being erroneously determined in the communication mode due to communication data.

Referring to fig. 3, in an embodiment, the apparatus for detecting an in-out box of an earphone further includes a charging circuit 500, the charging circuit 500 is connected to the processor 300, the interface terminal 100 and the earphone battery, and when the processor 300 detects that the detection level is a high level, the charging circuit 500 is controlled to be turned on to charge the earphone battery with the power accessed by the interface terminal 100. When the processor 300 detects that the detection level is high, for example, 5V, the processor 300 controls the charging circuit 500 to be turned on, and the earphone is turned on for charging.

Referring to fig. 3, in one embodiment, the interface terminal 100 includes a positive contact TP1 and a negative contact TP2.

Referring to fig. 3, in one embodiment, the charging circuit 500 includes a first switch Q1, a first resistor R3 and a charging module unit 510. A first conduction end of the first switch tube Q1 is connected to the positive electrode contact TP1, a second conduction end of the first switch tube Q1 is connected to the charging module unit 510, a control end of the first switch tube Q1 is connected to the processor 300, and the first resistor R3 is connected between the control end and the first conduction end of the first switch tube Q1. The charging module unit 510 is, for example, a charging management chip of the earphone, the charging module unit 510 is further connected to the battery of the earphone, when the processor 300 detects that the detection level is high level, for example, 5V, the processor 300 controls the first switch tube Q1 to be turned on, and the earphone starts charging.

Referring to fig. 3, in one embodiment, the first switch Q1 is a PMOS transistor, a source of the first switch Q1 is connected to the positive contact TP1, a drain of the first switch Q1 is connected to the charging module unit 510, and a gate of the first switch Q1 is connected to the processor 300.

Referring to fig. 3, in an embodiment, the detection circuit 200 includes a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2, the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 are connected in series between the interface terminal 100 and the ground, and a series node of the first voltage-dividing resistor R1 and the second voltage-dividing resistor R2 is connected to the detection terminal DET. The voltage of the positive contact TP1 is divided and sampled by the first voltage dividing resistor R1 and the second voltage dividing resistor R2, and the processor 300 obtains the level state information of the positive contact TP1 by detecting the voltage of the detection terminal DET, so as to determine whether the earphone is in a box-in state or out of the box state according to the level state of the positive contact TP 1.

Referring to fig. 3, in one embodiment, the apparatus for detecting an earphone entering and exiting box further includes a transient suppression diode E1, a first end of the transient suppression diode E1 is connected to the positive contact TP1 of the interface terminal 100, and a second end of the transient suppression diode E1 is grounded. The transient suppression diode E1 is used for performing rapid overvoltage protection on circuit elements, and the stability of the earphone in-out box detection device is improved.

Referring to fig. 3, in one embodiment, the preset duration is three hundred milliseconds, and the preset times are three times, that is, the processor 300 detects the detection level of the detection end DET every three hundred milliseconds, and if the processor 300 detects the detection level as a high level three times continuously, it is determined that the earphone is in the in-box state. If the processor 300 detects the detection level as a low level state three times continuously, it determines that the earphone is in the out-of-box state. The continuous state means that in the detection process, if a certain detection is inconsistent with the last detected level state, the counting is carried out again, the detected level state is ensured to be a stable level state lasting for a certain time, and the accuracy of the detection of the earphone in and out of the box is improved.

In some embodiments, the preset duration may also be one hundred milliseconds, two hundred milliseconds, five hundred milliseconds, etc. Can be set according to actual requirements. In some other embodiments, the preset number of times may also be four times, five times, etc., and may be set according to actual needs.

To further explain the earphone in-out box detection device in this embodiment, the working principle of the detection device will be described with reference to the specific case, please refer to fig. 3,

referring to fig. 3, in one embodiment, the headset has three modes: 5V charging mode, 1.8V communication mode, 0V off-box mode.

1. The earphone is switched from a 0V off-box mode to a 5V charging mode, the voltage of the positive electrode contact TP1 is 5V, the earphone detects that 5V starts a charging module program, the processor 300 detects the level state of the detection end DET of the detection circuit 200 every three hundred milliseconds, the detection end DET is high level for three consecutive times, the earphone is judged to be in a box-in state, the earphone can start a box-in module program at the moment, and the box-in module program is not repeated herein, compared with a working program which needs to be executed when the earphone is in the box-in state. If the detection is not high level, the counting is reset after the number of times is cleared.

2. The earphone is switched to 0V from the 5V charging mode, the voltage of the positive contact TP1 is 0V, the earphone does not detect 5V, and the charging circuit 500 stops working. The processor 300 detects the level state of the detection end DET of the detection circuit 200 every three hundred milliseconds, the detection end DET is at a low level for three consecutive times, and the earphone is determined to be in the out-of-box state, at this time, the earphone can start an out-of-box module program, which is, for example, a working program that the earphone needs to execute in the out-of-box state, and is not described herein again. If only one detection is high level, the counting is reset after the times are cleared.

3. The earphone is switched to a 1.8V communication mode from a 5V charging mode, the earphone does not detect 5V, the charging circuit 500 stops working, the earphone works in the communication mode at the moment, the processor 300 is triggered to clear the count of detecting the detection level to be low level, the processor 300 detects the level state of the detection end DET of the detection circuit 200 every three hundred milliseconds, and the earphone is judged to be out of the box only if the detection end DET is low level for three times, so that the count of the low level is cleared in the communication mode, the level state of the detection end DET which is not continuous for three times is ensured to be low level, the box module program is triggered to be executed mistakenly, and the accuracy of detecting the earphone in and out of the box is improved.

4. The earphone is switched from the 1.8V communication mode to the 5V charging mode, the voltage of the positive contact TP1 is 5V, the earphone detects 5V, and the charging circuit 500 starts to work. When the communication mode is switched to the charging mode, the level state of the detection terminal DET is always high level, so that the situation that the earphone is mistakenly judged to be in the out-box state and the out-box module program is mistakenly triggered does not exist.

5. The earphone is switched to 0V off-box mode from 1.8V communication mode, the voltage of the positive electrode contact TP1 is 0V, the earphone does not detect 5V, and the charging circuit 500 stops working. The processor 300 detects the level state of the detection terminal DET of the detection circuit 200 every three hundred milliseconds, and determines that the earphone is in the out-of-box state when the detection terminal DET is at low level for three consecutive times, and at this time, the earphone can start the out-of-box module program.

6. The earphone is switched from the 0V off-box mode to the 1.8V communication mode, the earphone does not detect 5V, the charging circuit 500 stops working, at this time, the earphone works in the communication mode, and the processor 300 is triggered to clear the count of detecting that the detection level is the low level. The processor 300 detects the level state of the detection terminal DET of the detection circuit 200 every three hundred milliseconds, and if the detection terminal DET is high level for three consecutive times, the earphone is determined to be in the box-in state, and at this time, the earphone can start the box-in module program.

The earphone in-out box detection device that the first aspect of the embodiment of the application provided, in the condition that the earphone is connected with the box that charges only through interface terminal 100, interface terminal 100 will support charging and will support communication, detect the level state of interface terminal 100 and output the detection level through increasing detection circuit 200, processor 300 detects the level state of this detection level once every preset duration in order to judge the earphone state, processor 300 detects the detection level as high level or low level for continuous preset number of times, in order to judge that the earphone is for going into the box or going out the box state, realize accurate reliable earphone in-out box detection, avoid the earphone in communication mode or go out the problem that the box shake leads to the earphone state erroneous judgement, promote user experience.

A second aspect of embodiments of the present application provides a TWS headset including the headset access box detection apparatus in the above embodiments.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill 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 embodiments of the present application, and they should be construed as being included in the present application.

Claims (10)

1. An earphone in-out box detection device, comprising:

an interface terminal for electrical connection with the charging box to transmit power or data;

the detection circuit is connected with the interface terminal and is used for detecting the voltage of the interface terminal and outputting a detection level at a detection end;

the processor is connected with the detection circuit and used for detecting the level state of the detection level once every preset time length so as to judge the state of the earphone, and when the detection level is detected to be high level for continuous preset times, the earphone is judged to be put into the box; and when the detection level is detected to be low level for continuous preset times, judging that the earphone is taken out of the box.

2. The detection apparatus as claimed in claim 1, wherein the processor is further configured to zero out a count of detection that the detection level is low when the headset is operating in a communication mode.

3. The sensing device of claim 2, further comprising a communication circuit; the communication circuit is connected with the processor and the interface terminal, and is used for transmitting communication data with the charging box through the interface terminal when the earphone works in a communication mode, and triggering the processor to clear the count of the detected level which is low.

4. A testing device according to any one of claims 1 to 3 further comprising a charging circuit;

the charging circuit is connected with the processor, the interface terminal and the earphone battery, and the processor is also used for controlling the charging circuit to be switched on so as to charge the earphone battery with the electric energy accessed by the interface terminal when the detection level is high level.

5. The test device of claim 4, wherein the interface terminal comprises a positive contact and a negative contact.

6. The detection device as claimed in claim 5, wherein the charging circuit comprises a first switch tube, a first resistor and a charging module unit;

the first conducting end of the first switch tube is connected with the positive electrode contact, the second conducting end of the first switch tube is connected with the charging module unit, the control end of the first switch tube is connected with the processor, and the first resistor is connected between the control end of the first switch tube and the first conducting end.

7. The detection apparatus according to any one of claims 1 to 3, wherein the detection circuit includes a first voltage-dividing resistor and a second voltage-dividing resistor, the first voltage-dividing resistor and the second voltage-dividing resistor being connected in series between the interface terminal and ground, a series node of the first voltage-dividing resistor and the second voltage-dividing resistor being connected to the detection terminal.

8. The detection apparatus of any of claims 1 to 3, further comprising a transient suppression diode, a first end of the transient suppression diode being connected to the interface terminal, a second end of the transient suppression diode being connected to ground.

9. The detecting device according to claim 1, wherein said preset time period is three hundred milliseconds, and said preset number of times is three times.

10. A TWS headset comprising a detection device according to any of claims 1 to 9.

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