CN111277941A - TWS earphone and out-of-box detection device, method and system thereof - Google Patents
TWS earphone and out-of-box detection device, method and system thereof Download PDFInfo
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- CN111277941A CN111277941A CN202010130091.6A CN202010130091A CN111277941A CN 111277941 A CN111277941 A CN 111277941A CN 202010130091 A CN202010130091 A CN 202010130091A CN 111277941 A CN111277941 A CN 111277941A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1025—Accumulators or arrangements for charging
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Abstract
The invention discloses a TWS earphone and a box outlet detection device, a method and a system thereof, wherein the TWS earphone comprises the following steps: the earphone comprises a pressure sensor arranged on the inner side of an earphone shell, a detection circuit connected with the pressure sensor, a processor connected with the detection circuit and a bulge part arranged on the inner wall of a charging box cover and at a position corresponding to the earphone shell, so that after an earphone is placed in the charging box and the charging box cover is closed, the bulge part is pressed on the pressure sensor corresponding to the earphone shell; the detection circuit is used for detecting the impedance information of the pressure sensor and obtaining a detection signal according to the impedance information; and the processor is used for carrying out TWS earphone out-of-box detection according to the detection signal and preset conditions. The invention has the advantages of simple structural design and lower cost on the basis of realizing the box outlet detection function of the TWS earphone.
Description
Technical Field
The embodiment of the invention relates to the technical field of wearable products, in particular to a TWS earphone and a box outlet detection device, method and system thereof.
Background
With the continuous progress of technology, wearable products are made smaller and smaller, but the requirements on the functions of the wearable products are higher and higher. The price and the function of the TWS earphones on the current market are also uneven, and for improving the experience of a user, the existing TWS earphones basically have a box-out detection function, namely when a charging box holding the TWS earphones is opened, the earphones can immediately sense the user at this time, and then some special functions can be defined, such as actively pairing and connecting a mobile phone, indicating the electric quantity by an LED lamp, and playing a screen by the mobile phone.
The first mode is that the charging box and the earphone have communication functions, the cover of the box is opened to detect through a mechanical switch or a Hall sensor, and then the earphone is informed through a communication Pin, the design has very high cost and relatively complex structural design, and the defect that the box detection function cannot be finished when the charging box is completely without electricity exists; the other one is that the utilization increases light sense sensor on the earphone, and when the box that charges was opened, the action of uncapping was judged to light sense sensor perception external environment, and this kind of scheme is also with high costs, and structural design is more complicated than a scheme, and the drawback causes the unable action of uncapping of judgement of light sense sensor very easily when surrounding light is darker.
Therefore, how to provide a detection device, method and system capable of realizing the TWS headphone out-of-box detection function and having low cost becomes a technical problem to be solved by those skilled in the art at present.
Disclosure of Invention
The embodiment of the invention aims to provide a TWS earphone and a box outlet detection device, method and system thereof, which have the advantages of simple structural design and low cost on the basis of realizing the box outlet detection function of the TWS earphone.
In order to solve the above technical problem, an embodiment of the present invention provides a TWS headphone out-of-box detection apparatus, including:
the earphone comprises a pressure sensor arranged on the inner side of an earphone shell, a detection circuit connected with the pressure sensor, a processor connected with the detection circuit, and a bulge part arranged on the inner side of a charging box cover and corresponding to the earphone shell, so that after an earphone is placed in the charging box and the charging box cover is closed, the bulge part presses the pressure sensor corresponding to the earphone shell;
the detection circuit is used for detecting impedance information of the pressure sensor and obtaining a detection signal according to the impedance information;
and the processor is used for performing TWS earphone out-of-box detection according to the detection signal and a preset condition.
Optionally, the processor is specifically configured to determine that the TWS headset is in a box state when the detection signal is within a preset range and the duration reaches a preset duration;
and when the detection signal is zero at the current moment and the TWS earphone is in the in-box state at the last moment, determining that the TWS earphone is in the out-box state.
Optionally, the detection circuit includes a resistance measurement unit and an operational amplifier unit, wherein an input end of the resistance measurement unit is connected to the pressure sensor, an output end of the resistance measurement unit is connected to an input end of the operational amplifier unit, and an output end of the operational amplifier unit is connected to the processor.
Optionally, the resistance measuring unit includes a first resistance, a second resistance, and a third resistance, wherein:
the first end of the first resistor is connected with the first output end of the pressure sensor, and the common end of the first resistor is connected with a first voltage signal; the first end of the second resistor is connected with the second output end of the pressure sensor, the common end of the second resistor is used as the first output end of the resistor measuring unit, the second end of the second resistor is connected with the first end of the third resistor, the common end of the second resistor is grounded, the second end of the first resistor is connected with the second end of the third resistor, and the common end of the first resistor is used as the second output end of the resistor measuring unit;
the operational amplifier unit comprises an amplifier, a fourth resistor, a fifth resistor and a filter capacitor, wherein:
the first end of the fourth resistor is used as the first input end of the operational amplifier unit and is connected with the second output end of the resistance measurement unit, the second end of the fourth resistor is connected with the inverting input end of the amplifier, the common end of the fourth resistor is connected with the first end of the fifth resistor, the second end of the fifth resistor is simultaneously connected with the output end of the amplifier and the first end of the filter capacitor, the forward input end of the amplifier is used as the second input end of the operational amplifier unit and is connected with the first output end of the resistance measurement unit, and the second end of the filter capacitor is used as the output end of the operational amplifier unit and is connected with the processor.
Optionally, the pressure sensor is a pressure sensor manufactured based on FPC impedance routing.
The embodiment of the invention also provides a TWS earphone out-of-box detection method, which is applied to the TWS earphone and a charging box and comprises the following steps: the earphone comprises a pressure sensor arranged on the inner side of an earphone shell and a detection circuit connected with the pressure sensor, wherein the pressure sensor corresponds to a bulge part on the inner side of a charging box cover, so that after an earphone is placed in the charging box and the charging box cover is combined, the bulge part is pressed on the pressure sensor corresponding to the earphone shell; the method comprises the following steps:
receiving a detection signal obtained by the detection circuit according to the impedance information of the pressure sensor;
and performing TWS earphone out-of-box detection according to the detection signal and a preset condition.
Optionally, the process of performing TWS headphone out-of-box detection according to the detection signal and the preset condition is as follows:
if the detection signal is in a preset range and the duration reaches a preset duration, the TWS earphone is in a box state;
and if the detection signal is zero at the current moment and the TWS earphone is in the box-out state at the last moment, judging that the TWS earphone is in the box-out state.
The embodiment of the invention also provides a TWS earphone, which comprises a TWS earphone and a charging box, wherein a pressure sensor, a detection circuit connected with the pressure sensor and a processor connected with the detection circuit are arranged on the inner side of an earphone shell of the TWS earphone, and the pressure sensor corresponds to a bulge part on the inner side of a charging box cover, so that after the earphone is placed in the charging box and the charging box cover is combined, the bulge part is pressed on the pressure sensor of the corresponding earphone shell;
the detection circuit is used for detecting impedance information of the pressure sensor and obtaining a detection signal according to the impedance information;
and the processor is used for performing TWS earphone out-of-box detection according to the detection signal and a preset condition.
The embodiment of the invention also provides a TWS earphone out-of-box detection system which is characterized by comprising the TWS earphone, the charging box and the TWS earphone out-of-box detection device.
The embodiment of the invention provides a TWS earphone out-of-box detection device and a TWS earphone, comprising: the earphone comprises a pressure sensor arranged on the inner side of an earphone shell, a detection circuit connected with the pressure sensor, a processor connected with the detection circuit and a bulge part arranged on the inner side of a charging box cover and corresponding to the earphone shell, so that after an earphone is placed in the charging box and the charging box cover is combined, the bulge part is pressed on the pressure sensor corresponding to the earphone shell; the detection circuit is used for detecting the impedance information of the pressure sensor and obtaining a detection signal according to the impedance information; and the processor is used for carrying out TWS earphone out-of-box detection according to the detection signal and preset conditions.
Therefore, according to the invention, the pressure sensor, the detection circuit and the processor are arranged on the inner side of the earphone shell of the TWS earphone, the bulge part is arranged on the charging box cover of the TWS earphone charging box and at the position corresponding to the inner side of the earphone shell, the bulge part touches the pressure sensor after the TWS earphone is placed on the charging box and the charging box cover is covered, and the bulge part is separated from the pressure sensor after the charging box cover is opened, so that the pressure sensor generates certain impedance information, and the processor determines the in-box state or out-of-box state of the TWS earphone according to the detection signal output by the detection circuit and the preset condition. The invention has the advantages of simple structural design and lower cost on the basis of realizing the box outlet detection function of the TWS earphone.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a TWS earphone out-of-box detection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pressure sensor according to an embodiment of the present invention;
FIG. 3 is a schematic partial circuit diagram of a TWS earphone out-of-box detection apparatus according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a TWS earphone out-of-box detection method according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a TWS earphone, a box outlet detection device and method of the TWS earphone and the TWS earphone, and has the advantages of simple structural design and low cost on the basis of realizing the box outlet detection function of the TWS earphone.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a TWS earphone out-of-box detection device according to an embodiment of the present invention. This TWS earphone goes out box detection device includes:
the earphone comprises a pressure sensor 11 arranged on the inner side of an earphone shell 1, a detection circuit 12 connected with the pressure sensor 11, a processor 13 connected with the detection circuit 12, and a bulge part 21 arranged on the inner side of a charging box cover 2 and at a position corresponding to the earphone shell 1, wherein after an earphone is placed in the charging box and the charging box cover is closed, the bulge part presses the pressure sensor 11 corresponding to the earphone shell 1;
the detection circuit 12 is used for detecting impedance information of the pressure sensor 11 and obtaining a detection signal according to the impedance information;
and the processor 13 is used for performing TWS earphone out-of-box detection according to the detection signal and preset conditions.
It should be noted that, after the TWS earphone is put into the charging box, the earphone shell 1 of the TWS earphone faces one side of the charging box cover 2, that is, after the charging box cover 2 is closed, the earphone shell 1 is opposite to the inner side of the charging box cover 2, therefore, in this application, the pressure sensors 11 can be arranged inside the earphone shells 1 of the left and right earphones, and the protruding part 21 is arranged at the position corresponding to the earphone shell 1 inside the charging box cover 2, so that after the earphone is placed in the charging box, and when the charging box cover 2 is closed, the protruding part 21 can be pressed on the pressure sensor 11 inside the earphone shell 1, and after the charging box cover 2 is opened, the pressure sensor 11 will not be pressed by the protruding part 21.
Correspondingly, the present application further provides a detection circuit 12 for detecting impedance information of the pressure sensor 11, and a processor 13, wherein the processor 13 can determine the out-of-box state of the TWS headset according to a detection signal generated by the detection circuit 12 and a preset condition, and the detection circuit 12 and the processor 13 may be specifically disposed on the headset (for example, inside the headset housing 1), and may be specifically set according to an actual space inside the headset. Specifically, after the earphone is placed in the charging box, and the charging box cover 2 is closed, the protruding portion 21 will be pressed on the pressure sensor 11, so as to generate certain impedance information, when the charging box cover is opened, the protruding portion 21 leaves the pressure sensor 11, that is, the pressure sensor 11 will not be pressed by the protruding portion 21, and at this time, the impedance information of the pressure sensor 11 will be zero, so that the detection circuit 12 can obtain a corresponding detection signal (the detection signal may specifically be a voltage signal) through the detected impedance information of the pressure sensor 11, and send the detection signal to the processor 13, and the processor 13 can realize out-of-box detection of the TWS earphone according to the received detection signal and a preset condition, wherein the preset condition includes a preset box condition and a preset out-box condition, and when the detection signal satisfies the preset box condition, it is determined that the TWS earphone is in a box state, and when the detection signal meets the preset out-of-box condition, determining that the TWS earphone is in the out-of-box state.
Further, the processor 13 is specifically configured to determine that the TWS headset is in the in-box state when the detection signal is within the preset range and the duration reaches the preset duration;
when the detection signal is zero at the current moment and the TWS earphone is in the box state at the last moment, the charging box is opened to determine that the TWS earphone is in the box state.
Specifically, since the user may also press the inner side of the earphone case 1 with a hand when using the earphone, but the generated pressure is different in magnitude and usually has a short duration, and after the parameters of the protruding portion 21 are determined, the impedance generated when the protruding portion 21 presses the pressure sensor 11 is within a certain range, and for the earphone to be put into the case, the protruding portion 21 continuously presses the pressure sensor 11 after the charging case cover 2 is closed, in order to prevent misjudgment, the preset case condition in the embodiment may be that the detection signal is within a preset range and the duration time reaches a preset duration, that is, after receiving the detection signal, the processor 13 determines whether the detection signal meets the condition that the detection signal is within the preset range and the duration time reaches the preset duration time, and if yes, it indicates that the TWS earphone is in a case shape, that the TWS earphone is in the case and the charging case is in a closed state, the preset range may be determined according to parameters such as the height and the sectional area of the protruding portion, the embodiment is not particularly limited, the preset duration may be 30s, and the specific value may also be determined according to actual needs.
In addition, after the charging box cover 2 is opened, the pressure of the pressure sensor 11 applied by the protruding portion 21 may become zero instantly, so the preset box-out condition in this application may be that the TWS earphone is in the box-shaped state at the last time, and the detection signal at the current time is zero, that is, after the processor 13 receives the detection signal, the detection signal at the current time is zero, and the TWS earphone is in the box-shaped state at the last time, so that it may be determined that the current TWS earphone is in the box-out state, that is, the opening of the charging box of the earphone is performed.
The TWS earphone has a small volume, so the pressure sensor 11 in this embodiment can be made thin by being attached to the inner side of the earphone shell 1 to improve the space utilization of the inner side of the earphone shell 1, and the pressure sensor made by being wired based on the FPC impedance is shown in fig. 2.
Further, the detection circuit 12 includes a resistance measurement unit and an operational amplifier unit, wherein an input end of the resistance measurement unit is connected to the pressure sensor, an output end of the resistance measurement unit is connected to an input end of the operational amplifier unit, and an output end of the operational amplifier unit is connected to the processor.
Specifically, the resistance measuring unit in this embodiment can detect impedance information of the pressure sensor 11, obtain a corresponding voltage signal according to the impedance information, and output the voltage signal to the operational amplifier unit, and the operational amplifier unit performs motion amplification on the voltage signal to obtain a detection signal, and outputs the detection signal to the processor.
Further, the resistance measuring unit in the present embodiment as shown in fig. 3 includes a first resistor R1, a second resistor R2, and a third resistor R3, wherein:
a first end of the first resistor R1 is connected to a first output end of the pressure sensor 11, and a common end thereof is connected to the first voltage signal VCC; a first end of the second resistor R2 is connected with the second output end of the pressure sensor 11, a common end of the second resistor R2 is used as the first output end of the resistance measurement unit, a second end of the second resistor R2 is connected with a first end of the third resistor R3, a common end of the second resistor R2 is grounded, a second end of the first resistor R1 is connected with a second end of the third resistor R3, and a common end of the first resistor R1 is used as the second output end of the resistance measurement unit;
the operational amplifier unit in this embodiment includes an amplifier AMP, a fourth resistor R4, a fifth resistor Rf, and a filter capacitor C1, where:
a first end of the fourth resistor R4 is connected to the second output end of the resistance measuring unit as a first input end of the operational amplifier unit, a second end of the fourth resistor R4 is connected to the inverting input end of the amplifier AMP, a common end of the fourth resistor R4 is connected to a first end of the fifth resistor Rf, a second end of the fifth resistor Rf is connected to both the output end of the amplifier AMP and the first end of the filter capacitor C1, a forward input end of the amplifier AMP is connected to the first output end of the resistance measuring unit as a second input end of the operational amplifier unit, and a second end of the filter capacitor C1 is connected to the processor 13 as an output end of the operational amplifier unit.
Specifically, the pressure sensor 11 (the resistor is Rx) and the three resistors of the first resistor R1, the second resistor R2 and the third resistor R3 in the resistor measuring unit form a wheatstone bridge, so as to detect the impedance change of the pressure sensor 11, output the voltage signal Vx corresponding to the impedance change of the pressure sensor 11 to the operational amplifier unit, and output the amplified voltage signal Vx to the ADC in the MCU for processing, thereby obtaining the out-of-box state of the TWS headset.
Therefore, according to the invention, the pressure sensor, the detection circuit and the processor are arranged on the inner side of the earphone shell of the TWS earphone, the bulge part is arranged on the inner side of the charging box cover of the TWS earphone corresponding to the inner side of the earphone shell, the bulge part touches the pressure sensor after the TWS earphone is placed on the charging box and the charging box cover is covered, and the bulge part is separated from the pressure sensor after the charging box cover is opened, so that the pressure sensor generates certain impedance information, and the processor determines the in-box state or out-of-box state of the TWS earphone according to the detection signal output by the detection circuit and preset conditions. The invention has the advantages of simple structural design and lower cost on the basis of realizing the box outlet detection function of the TWS earphone.
Referring to fig. 4, fig. 4 is a schematic flow chart of a TWS earphone out-of-box detection method according to an embodiment of the present invention.
The method is applied to the TWS earphone and the charging box, wherein the TWS earphone comprises a pressure sensor arranged on the inner side of an earphone shell and a detection circuit connected with the pressure sensor, and the pressure sensor corresponds to a bulge part on the inner side of a charging box cover, so that after the earphone is placed in the charging box and the charging box cover is closed, the bulge part is pressed on the pressure sensor corresponding to the earphone shell; the method comprises the following steps:
s110: receiving a detection signal obtained by a detection circuit according to impedance information of the pressure sensor;
s120: and performing TWS earphone out-of-box detection according to the detection signal and a preset condition.
It should be noted that, after the charging box is put into the TWS earphone, the earphone shell of the TWS earphone is towards one side of the charging box cover, that is, after the charging box cover is closed, the earphone shell is opposite to the inner side of the charging box cover, therefore, in the application, the pressure sensor can be arranged at the inner side of the earphone shell of the TWS earphone, and the bulge part is arranged at the position corresponding to the earphone shell at the inner side of the charging box cover, so that the earphone is placed in the charging box, and the bulge part can be pressed on the pressure sensor at the inner side of the earphone shell when the charging box cover is closed, and when the charging box cover is opened, the pressure sensor is not pressed by the bulge part. On the basis, the detection circuit can detect the impedance information of the pressure sensor and obtain a corresponding detection signal, and then the TWS earphone can be further subjected to out-of-box detection according to the detection signal sent by the detection circuit and preset conditions.
Further, the step of performing TWS headphone out-of-box detection in S120 according to the detection signal and the preset condition may specifically be:
if the detection signal is in the preset range and the duration time reaches the preset duration time, the TWS earphone is in a box state;
and if the current moment detection signal is zero and the TWS earphone is in the box-out state at the last moment, judging that the TWS earphone is in the box-out state.
It can be understood that, since a user may press the inner side portion of the earphone shell and touch the pressure sensor by hand when using the earphone, but the generated pressure is different in magnitude and generally has a short duration, after the parameter of the protruding portion is determined, the impedance generated when the protruding portion presses the pressure sensor is within a certain range, and for the earphone to be put into the box, the protruding portion continuously presses the pressure sensor after the charging box cover is closed, in order to prevent misjudgment, the preset box condition in the embodiment may be that the detection signal is within a preset range and the duration time reaches a preset duration, that is, after receiving the detection signal, whether the detection signal meets the condition that the detection signal is within the preset range and the duration time reaches the preset duration time is determined, and if yes, the TWS earphone is in a box state, that is, the TWS earphone is put into the box and the charging box is in a closed state is determined, the preset range may be determined according to parameters such as the height and the sectional area of the protruding portion, the embodiment is not particularly limited, the preset duration may be 30s, and the specific value may also be determined according to actual needs.
In addition, after the charging box cover is opened, the pressure sensor is instantly changed into zero by the pressure of the bulge, so that the preset box outlet condition in the application can be that the TWS earphone is in a box state at the last moment, the detection signal at the current moment is zero, namely, after the detection signal is received, the detection signal at the current moment is zero, and the TWS earphone is in the box state at the last moment, and then the current TWS earphone can be determined to be in the box state, namely, the opening of the cover of the charging box of the earphone.
It should be further noted that, in practical applications, after it is determined that the TWS headset is in the out-of-box state, the TWS headset may be controlled to be connected in a pairing manner with a corresponding terminal device (such as a mobile phone), and corresponding functions, such as a mobile phone screen flipping function or an LED lamp electric quantity indicating function, are turned on, where in order to avoid excessive energy consumption, high energy consumption functions such as music playing are not turned on before it is not determined that the user uses the TWS headset; and after the TWS earphone is determined to be in the box state, the TWS earphone is controlled to be disconnected from the pairing connection of the corresponding terminal equipment, and the corresponding function is closed.
Therefore, the invention has the advantages of simple structural design and lower cost on the basis of realizing the box outlet detection function of the TWS earphone.
On the basis of the above embodiment, the embodiment of the present invention further provides a TWS headset, including a TWS headset and a charging box, wherein a pressure sensor, a detection circuit connected to the pressure sensor, and a processor connected to the detection circuit are disposed inside a shell of the TWS headset, and the pressure sensor corresponds to a protrusion inside a lid of the charging box, so that after the headset is placed inside the charging box and the lid of the charging box is closed, the protrusion presses on the pressure sensor of the corresponding shell;
the detection circuit is used for detecting the impedance information of the pressure sensor and obtaining a detection signal according to the impedance information;
and the processor is used for carrying out TWS earphone out-of-box detection according to the detection signal and preset conditions.
Therefore, the embodiment has the advantages of simple detection mode, convenience in implementation, simple structural design and lower cost.
On the basis of the above embodiment, an embodiment of the present invention further provides a TWS headphone out-of-box detection system, including the above TWS headphone, a charging box, and the above TWS headphone out-of-box detection apparatus.
It should be noted that the TWS headset in this embodiment includes the TWS headset out-of-box detection device, and this embodiment has the advantages of simple structural design and low cost on the basis of being able to realize the TWS headset out-of-box detection function. For a specific description of the TWS earphone out-of-box detection device in this embodiment, refer to the above embodiments, which are not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A TWS earphone out-of-box detection device is characterized by comprising:
the pressure sensor is arranged on the inner side of the TWS earphone shell, the detection circuit is connected with the pressure sensor, the processor is connected with the detection circuit, and the bulge part is arranged on the inner side of the charging box cover and at the position corresponding to the earphone shell, so that after an earphone is placed in the charging box and the charging box cover is closed, the bulge part presses the pressure sensor corresponding to the earphone shell;
the detection circuit is used for detecting impedance information of the pressure sensor and obtaining a detection signal according to the impedance information;
and the processor is used for performing TWS earphone out-of-box detection according to the detection signal and a preset condition.
2. The TWS earphone out-of-box detection device of claim 1, wherein the processor is specifically configured to determine that the TWS earphone is in a box state when the detection signal is within a preset range and the duration reaches a preset duration;
and when the detection signal is zero at the current moment and the TWS earphone is in the in-box state at the last moment, determining that the TWS earphone is in the out-box state.
3. The TWS earphone out-of-box detection device of claim 1, wherein the detection circuit comprises a resistance measurement unit and an operational amplifier unit, wherein an input of the resistance measurement unit is connected to the pressure sensor, an output of the resistance measurement unit is connected to an input of the operational amplifier unit, and an output of the operational amplifier unit is connected to the processor.
4. The TWS headset out-of-box detection device of claim 3, wherein the resistance measurement unit comprises a first resistance, a second resistance, and a third resistance, wherein:
the first end of the first resistor is connected with the first output end of the pressure sensor, and the common end of the first resistor is connected with a first voltage signal; the first end of the second resistor is connected with the second output end of the pressure sensor, the common end of the second resistor is used as the first output end of the resistor measuring unit, the second end of the second resistor is connected with the first end of the third resistor, the common end of the second resistor is grounded, the second end of the first resistor is connected with the second end of the third resistor, and the common end of the first resistor is used as the second output end of the resistor measuring unit;
the operational amplifier unit comprises an amplifier, a fourth resistor, a fifth resistor and a filter capacitor, wherein:
the first end of the fourth resistor is used as the first input end of the operational amplifier unit and is connected with the second output end of the resistance measurement unit, the second end of the fourth resistor is connected with the inverting input end of the amplifier, the common end of the fourth resistor is connected with the first end of the fifth resistor, the second end of the fifth resistor is simultaneously connected with the output end of the amplifier and the first end of the filter capacitor, the forward input end of the amplifier is used as the second input end of the operational amplifier unit and is connected with the first output end of the resistance measurement unit, and the second end of the filter capacitor is used as the output end of the operational amplifier unit and is connected with the processor.
5. A TWS earphone out-of-box detection device according to any one of claims 1 to 4, wherein the pressure sensor is a pressure sensor made based on FPC impedance traces.
6. A TWS earphone out-of-box detection method is characterized by being applied to a TWS earphone and a charging box and comprising the following steps: the earphone comprises a pressure sensor arranged on the inner side of an earphone shell and a detection circuit connected with the pressure sensor, wherein the pressure sensor corresponds to a bulge part on the inner side of a charging box cover, so that after an earphone is placed in the charging box and the charging box cover is combined, the bulge part is pressed on the pressure sensor corresponding to the earphone shell; the method comprises the following steps:
receiving a detection signal obtained by the detection circuit according to the impedance information of the pressure sensor;
and performing TWS earphone out-of-box detection according to the detection signal and a preset condition.
7. The TWS headset out-of-box detection method of claim 1, wherein the TWS headset out-of-box detection according to the detection signal and the preset condition is performed by:
if the detection signal is in a preset range and the duration reaches a preset duration, the TWS earphone is in a box state;
and if the detection signal is zero at the current moment and the TWS earphone is in the box-out state at the last moment, judging that the TWS earphone is in the box-out state.
8. A TWS earphone is characterized by comprising a TWS earphone and a charging box, wherein a pressure sensor, a detection circuit connected with the pressure sensor and a processor connected with the detection circuit are arranged on the inner side of an earphone shell of the TWS earphone, and the pressure sensor corresponds to a bulge part on the inner side of a charging box cover, so that after the earphone is placed in the charging box and the charging box cover is combined, the bulge part is pressed on the pressure sensor of the corresponding earphone shell;
the detection circuit is used for detecting impedance information of the pressure sensor and obtaining a detection signal according to the impedance information;
and the processor is used for performing TWS earphone out-of-box detection according to the detection signal and a preset condition.
9. A TWS headset out-of-box detection system comprising a TWS headset according to claim 8, a charging box and a TWS headset out-of-box detection apparatus according to any one of claims 1 to 5.
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