TWS open type earphone wearing detection method, control device and TWS open type earphone

Abstract

The invention discloses a TWS open type earphone wearing detection method, a control device and a TWS open type earphone. The TWS open type earphone comprises a TWS ear-hanging earphone, the TWS ear-hanging earphone is provided with an earphone body, the earphone body comprises a fixing part and a sound outlet part provided with a sound outlet hole, the sound outlet part is provided with a first electrode, and the fixing part is provided with a second electrode. The method comprises the following steps: firstly, acquiring a communication state between a Bluetooth communication module and an external terminal; under the condition that the communication connection between the Bluetooth communication module and the external terminal is not established, the static working state is kept; under the condition that the Bluetooth communication module establishes communication connection with the external terminal, first current flowing through the current detection circuit is determined according to the current detection signal; when the first current is within a preset current range, determining that the TWS open type earphone is in a wearing state; and when the first current is out of the preset current range, determining that the TWS open type earphone is in a non-wearing state. The invention aims to realize wearing detection of a TWS open type earphone, especially an ear hanging earphone.

Description

Technical Field

[0002] The present invention relates to the field of earphone control technology, and in particular to a TWS open-type earphone wearing detection method, a control device and a TWS open-type earphone. Background Art

[0003] TWS open-ear headphones, especially ear-hook headphones, are not suitable for wearing detection in the same way as traditional in-ear headphones or headphones because they do not fit into the ear and do not cover the entire ear. Therefore, for TWS open-ear headphones, especially ear-hook headphones, how to implement wearing detection is very important. Summary of the invention

[0004] The main purpose of the present invention is to provide a TWS open-ear headphone wearing detection method, a control device and a TWS open-ear headphone, aiming to improve the convenience of using TWS ear-hook headphones.

[0005] The present invention discloses a wearing detection method for a TWS open-type earphone, wherein the TWS open-type earphone comprises a TWS ear-hook earphone; the TWS ear-hook earphone comprises an earphone body, a Bluetooth communication module is arranged in the earphone body, the earphone body comprises a fixing part and a sound outlet part provided with a sound outlet hole, the sound outlet part and the fixing part are connected by an elastic part, and under the action of the elastic part, the sound outlet part and the fixing part can be maintained in a first position in contact with each other; when a user wears the TWS ear-hook earphone, the sound outlet part and the fixing part are arranged close to each other under the action of the elastic part so that the earphone body is hung on the auricle and the sound outlet part is arranged in contact with the concha cavity inside the auricle; The sound output portion is provided with a first electrode, and the fixed portion is provided with a second electrode. When the sound output portion and the fixed portion are maintained in a first position in contact with each other, the first electrode and the second electrode are in contact; when the user wears the TWS ear-hanging headset, the first electrode is arranged to fit the concha cavity inside the auricle, and the second electrode is arranged to fit the back of the ear; The first electrode is grounded, a first power supply terminal for providing a first voltage, a current limiting resistor and a current detection circuit are arranged in the fixed portion, the first power supply terminal, the current limiting resistor and the current detection circuit are electrically connected in series in sequence, a first end of the current detection circuit is connected to a second end of the current limiting resistor, and a second end of the current detection circuit is electrically connected to the second electrode; the current detection circuit is used to detect the current flowing through itself and output a corresponding current detection signal; The TWS open-ear headset wearing detection method comprises: Step S100: the TWS open headset obtains the communication status between its own Bluetooth communication module and the external terminal; Step S200: When the Bluetooth communication module has not established a communication connection with the external terminal, maintain a static working state; Step S300: when the Bluetooth communication module establishes a communication connection with an external terminal, determining a first current flowing through the current detection circuit according to the current detection signal; Step S400: When the first current is within a preset current range, determine that the TWS open-back headset is in a wearing state; when the first current is outside the preset current range, determine that the TWS open-back headset is in a non-wearing state.

[0006] Optionally, the current detection circuit includes a first resistor, the first resistor is arranged in series in a path between the current limiting resistor and the second electrode, the current detection signal includes a first voltage signal at a first end of the first resistor and a second voltage signal at a second end of the first resistor; the first end of the current detection circuit includes the first end of the first resistor, and the second end of the current detection circuit includes the second end of the first resistor; Determining the first current flowing through the current detection circuit according to the current detection signal includes: A voltage drop on the first resistor is calculated according to the first voltage signal and the second voltage signal, and the first current is calculated according to the voltage drop and a preset first resistance value corresponding to the first resistor.

[0007] Optionally, in the fixed portion, a switch circuit is further arranged in series between the first power supply terminal and the current limiting resistor, an input end of the switch circuit is connected to the first power supply terminal, and a second end of the switch circuit is electrically connected to the current limiting resistor; The step S200, maintaining a static working state when the Bluetooth communication module has not established a communication connection with the external terminal, includes: Step S210: When the Bluetooth communication module does not establish a communication connection with the external terminal, maintain a static working state and control the switch circuit to be in an open state to disconnect the path between the first power supply terminal and the current limiting resistor; The step S300, when the Bluetooth communication module establishes a communication connection with the external terminal, determining the first current flowing through the current detection circuit according to the current detection signal, comprises: Step S310: When the Bluetooth communication module establishes a communication connection with an external terminal, the switch circuit is controlled to be in a closed state to conduct the path between the first power supply terminal and the current limiting resistor, and the first current flowing through the current detection circuit is determined according to the current detection signal.

[0008] Optionally, the step S310 includes: Step S311, within a preset first time period after the Bluetooth communication module and the external terminal switch from not establishing a communication connection to establishing a communication connection, controlling the switch circuit to be in an open state; and after the preset first time period, controlling the switch circuit to be in a closed state to conduct the path between the first power supply terminal and the current limiting resistor, and determining the first current flowing through the current detection circuit according to the current detection signal; Step S312: When the Bluetooth communication module establishes a communication connection with the external terminal and the duration of maintaining the communication connection reaches a preset second duration, control the switch circuit to switch from an open state to a closed state at intervals of a preset duration and maintain a preset third duration; and when the switch circuit is in a closed state, determine the first current flowing through the current detection circuit according to the current detection signal; wherein the preset second duration is greater than the preset first duration.

[0009] Optionally, the preset duration includes a preset fourth duration and a preset fifth duration, and the preset fourth duration is shorter than the preset fifth duration; and step S312 includes: Step S3121: When the Bluetooth communication module establishes a communication connection with the external terminal and the duration of maintaining the established communication connection reaches a preset second duration, obtaining the playing status of the TWS open-ear headset; Step S3122, when the sound output portion of the TWS open-earphone outputs an audio signal, controlling the switch circuit to switch from an open state to a closed state at intervals of a preset fourth time length and maintain a preset third time length; and when the switch circuit is in the closed state, determining the first current flowing through the current detection circuit according to the current detection signal; Step S3123: When the sound output portion of the TWS open-earphone does not output an audio signal, control the switch circuit to switch from an open state to a closed state at intervals of a preset fifth time duration and maintain a preset third time duration; and when the switch circuit is in a closed state, determine the first current flowing through the current detection circuit according to the current detection signal.

[0010] Optionally, before step S400, the method further includes: Step S500: The TWS open earphone communicates with the external terminal via the Bluetooth communication module, and obtains the preset current range stored in the external terminal.

[0011] Optionally, before step S400, the method further includes: Step S610: When the TWS open-type headset communicates with the external terminal through the Bluetooth communication module and determines that the external terminal does not store the preset current range, the TWS open-type headset controls the external terminal to display a wearing calibration request; Step S620: when the TWS open earphone receives a wearing calibration consent instruction from the external terminal, a plurality of wearing modes arranged in a first order are obtained, and a first wearing mode is set as a target wearing mode according to the first order; wherein the plurality of wearing modes arranged in the first order include: the ear-hanging earphone is hung on the lower part of the auricle, the ear-hanging earphone is hung on the middle part of the auricle, the ear-hanging earphone is hung on the upper middle part of the auricle, and the ear-hanging earphone is hung on the upper part of the auricle; Step S630, controlling the external terminal to display the current target wearing method and instructing the user to wear the earphone according to the target wearing method; Step S640: When the TWS open-type earphone receives a wearing completion instruction from an external terminal, the switch circuit is controlled to be in a closed state, and the current first current is obtained and set as a reference current; Step S650: according to the first sequence, set the next wearing mode of the current wearing mode as a new target wearing mode and repeat the steps S630-S640 until all the wearing modes are used as the target wearing modes; Step S660, generating the corresponding preset current range according to the multiple reference currents and storing it in the external terminal; wherein the minimum value of the preset current range is the minimum value of the multiple reference currents, and the maximum value of the preset current range is the maximum value of the multiple reference currents.

[0012] Optionally, between step S650 and step S660, the method further includes: Any wearing mode is set as the target wearing mode, and steps S630-S640 are executed.

[0013] The present application also proposes a control device, which includes: a memory, a processor, and a TWS open-type earphone wearing detection program stored in the memory and executable on the processor, wherein the TWS open-type earphone wearing detection program is configured to implement the TWS open-type earphone wearing detection method as described in any one of the above items.

[0014] The present application also proposes a TWS open-type headset, wherein the TWS open-type headset comprises a TWS ear-hook headset and the control device as described above; The TWS ear-hanging earphone has an earphone body, a Bluetooth communication module is arranged in the earphone body, the earphone body includes a fixing part and a sound outlet part provided with a sound outlet hole, the sound outlet part and the fixing part are connected by an elastic part, and under the action of the elastic part, the sound outlet part and the fixing part can be maintained in a first position in contact with each other; when the user wears the TWS ear-hanging earphone, the sound outlet part and the fixing part are arranged close to each other under the action of the elastic part so that the earphone body is hung on the auricle and the sound outlet part is arranged in contact with the concha cavity inside the auricle; The sound output portion is provided with a first electrode, and the fixed portion is provided with a second electrode. When the sound output portion and the fixed portion are maintained in a first position in contact with each other, the first electrode and the second electrode are in contact; when the user wears the TWS ear-hanging headset, the first electrode is arranged to fit the concha cavity inside the auricle, and the second electrode is arranged to fit the back of the ear; The first electrode is grounded, and a first power supply terminal for providing a first voltage, a current limiting resistor and a current detection circuit are arranged in the fixed part. The first power supply terminal, the current limiting resistor and the current detection circuit are electrically connected in series in sequence, the first end of the current detection circuit is connected to the second end of the current limiting resistor, and the second end of the current detection circuit is electrically connected to the second electrode; the current detection circuit is used to detect the current flowing through itself and output a corresponding current detection signal.

[0015] The present invention discloses a TWS open-type earphone wearing detection method, the method comprising: first obtaining the communication state between its own Bluetooth communication module and an external terminal; when the Bluetooth communication module does not establish a communication connection with the external terminal, maintaining a static working state; when the Bluetooth communication module establishes a communication connection with the external terminal, determining the first current flowing through the current detection circuit according to the current detection signal; when the first current is within a preset current range, determining that the TWS open-type earphone is in a wearing state; when the first current is outside the preset current range, determining that the TWS open-type earphone is in a non-wearing state. It can be understood that due to the structural characteristics of the ear-hanging earphone, when it is worn and not worn, the resistance between the first electrode and the second electrode changes greatly (there is the resistance of the user's ear when worn, and the resistance is extremely small when not worn because of direct contact), so by detecting the current flowing thereon, it is possible to accurately realize the wearing detection of the TWS open-type earphone, especially the TWS ear-hanging earphone. In this way, based on the structural characteristics and wearing characteristics of the TWS open-type earphone, especially the TWS ear-hanging earphone, the present application can realize the wearing detection of the ear-hanging earphone and enable the ear-hanging earphone to have the function of matching the wearing detection through the above-mentioned setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 This is a flow chart of an embodiment of a TWS open-type headset wearing detection method of the present application; Figure 2 This is a schematic diagram of the structure of an embodiment of the TWS ear-hook headset of the present application; Figure 3 This is a schematic diagram of the TWS ear-hook headset of this application being worn on the user's ear; Figure 4 This is a schematic diagram of a circuit module in an embodiment of a TWS open-ear headset of the present application; Figure 5 This is a schematic diagram of a circuit module in another embodiment of the TWS open-ear headset of the present application; Figure 6 This is a flow chart of another embodiment of the TWS open-earphone wearing detection method of the present application; Figure 7 This is a flow chart of another embodiment of the TWS open-type earphone wearing detection method of the present application; Figure 8 This is a flow chart of another embodiment of the TWS open-type headset wearing detection method of the present application; Fig. 9 This is a schematic diagram of multiple wearing methods of the TWS earphones in this application.

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] TWS open-ear headphones, especially ear-hook headphones, are not suitable for wearing detection in the same way as traditional in-ear headphones or headphones because they do not fit into the ear and do not cover the entire ear. Therefore, for TWS open-ear headphones, especially ear-hook headphones, how to implement wearing detection is very important.

[0023] It should be understood that since in-ear headphones are inserted into the user's external auditory canal, wearing detection can be achieved by light reflection. Similarly, the earmuffs of headphones completely wrap the user's ears to form a relatively sealed space, so wearing detection can also be achieved by light reflection detection.

[0024] However, reference Figure 2 and Figure 3 , corresponding to TWS open-type headphones, especially TWS ear-hook headphones, since the ear-hook headphones use elastic parts to gather the sound-emitting part and the fixing part, they are clamped on the auricle through the sound-emitting part and the fixing part. Therefore, they will not penetrate into the external auditory canal like in-ear headphones, nor will they fully wrap the ears like headphones. Therefore, even if a light reflection detection component is set on the sound-emitting part, the accuracy of the detection is difficult to fully guarantee due to the different wearing methods and ear contours of each user. Therefore, the present application proposes a wearing detection method suitable for TWS open-type headphones, especially TWS ear-hook headphones.

[0025] For this purpose, refer to Figure 1-Figure 4The present invention proposes a TWS open-type earphone wearing detection method, wherein the TWS open-type earphone comprises a TWS ear-hook earphone; the TWS ear-hook earphone comprises an earphone body, a Bluetooth communication module is arranged in the earphone body, the earphone body comprises a fixing part and a sound outlet part provided with a sound outlet hole, the sound outlet part and the fixing part are connected by an elastic part, and under the action of the elastic part, the sound outlet part and the fixing part can be maintained in a first position in contact with each other; when a user wears the TWS ear-hook earphone, the sound outlet part and the fixing part are arranged close to each other under the action of the elastic part so that the earphone body is hung on the auricle and the sound outlet part is arranged in contact with the concha cavity inside the auricle; The sound output portion is provided with a first electrode, and the fixed portion is provided with a second electrode. When the sound output portion and the fixed portion are maintained in a first position in contact with each other, the first electrode and the second electrode are in contact; when the user wears the TWS ear-hanging headset, the first electrode is arranged to fit the concha cavity inside the auricle, and the second electrode is arranged to fit the back of the ear; The first electrode is grounded, and a first power supply terminal for providing a first voltage, a current limiting resistor and a current detection circuit are arranged in the fixed part. The first power supply terminal, the current limiting resistor and the current detection circuit are electrically connected in series in sequence, the first end of the current detection circuit is connected to the second end of the current limiting resistor, and the second end of the current detection circuit is electrically connected to the second electrode; the current detection circuit is used to detect the current flowing through itself and output a corresponding current detection signal.

[0026] In the present embodiment, the TWS open-type earphones, especially the TWS ear-hook earphones (hereinafter referred to as ear-hook earphones or earphones) are provided with a control device for storing and executing the following method. The control device can be implemented by a main controller, such as MCU (Microcontroller Unit), DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), SOC (System OnChip), etc. At the same time, a Bluetooth communication module for communicating with an external terminal is provided in the ear-hook earphones. Among them, the external terminal can be a mobile phone, a tablet, a computer, etc. A speaker and a sound processing module are provided in the sound output part. The control device will obtain the audio output by the external terminal through the Bluetooth communication module and then play it from the sound outlet through the sound processing module and the speaker. For example, the audio signal is filtered, digital-to-analog converted, frequency modulated, etc. by the sound processing module and then played from the sound outlet through the speaker. Reference Figure 2When the user does not wear the earphone, the sound outlet and the fixing part can be maintained in the first position of contact with each other under the action of the elastic part. When the user needs to wear the earphone, the user will apply force to separate the contacting sound outlet and fixing part, and then stick the sound outlet to the concha cavity of the auricle, and stick the fixing part to the back side of the auricle. In this way, under the action of the elastic part, the sound outlet and the fixing part will clamp the auricle so that the earphone is hung on the user's auricle.

[0027] The first electrode and the second electrode can be implemented by metal electrode sheets, such as copper metal electrode sheets. The current limiting resistor can be implemented by a resistor and is used to limit the upper limit of the current in the path where it is located, so as to prevent the first electrode and the second electrode from directly contacting (that is, when the sound output part and the fixed part are in contact at the first position), and the current in the path is too large, thereby causing damage to the device, thereby effectively improving the safety of the entire circuit. The first power supply terminal is used to output a first voltage, and the first voltage is provided by the voltage conversion circuit in the fixed part after converting the voltage of the battery.

[0028] It is understandable that when the user is not wearing the earphones, since the first electrode and the second electrode are in contact with each other, the grounded first electrode, the second electrode, the current limiting resistor and the current detection circuit, and the first power supply terminal will form a complete electrical circuit. When the user wears the earphones, the grounded first electrode, the user's ear, the second electrode, the current limiting resistor and the current detection circuit, and the first power supply terminal will form a complete electrical circuit. Among them, arranging the current limiting resistor and the current detection circuit in the fixed part can effectively save the wiring space in the sound output part compared to arranging them in the sound output part, so as to reserve sufficient placement space for the acoustic-related components in the sound output part.

[0029] refer to Figure 1-Figure 4 In one embodiment of the present invention, the TWS open-ear headset wearing detection method includes: Step S100: the TWS open headset obtains the communication status between its own Bluetooth communication module and the external terminal; In this embodiment, the control device in the TWS open earphone, especially the TWS ear-hook earphone, is electrically connected to the Bluetooth communication device and can obtain its communication status with the external terminal via the Bluetooth communication device.

[0030] Step S200: When the Bluetooth communication module has not established a communication connection with the external terminal, maintain a static working state; In this embodiment, when the control device confirms that no communication connection is established between the current Bluetooth communication module and the external terminal, in order to reduce power consumption, the control device will enter a static working state and will not execute the following program process of determining the first current based on the current detection signal and judging whether the current ear-hook earphone is in a wearing state based on the first current.

[0031] Step S300: when the Bluetooth communication module establishes a communication connection with an external terminal, determining a first current flowing through the current detection circuit according to the current detection signal; In this embodiment, reference Figure 1-Figure 4 , the current detection circuit includes a first resistor, the first resistor is arranged in series in the path between the current limiting resistor and the second electrode, the current detection signal includes a first voltage signal at a first end of the first resistor and a second voltage signal at a second end of the first resistor; the first end of the current detection circuit includes the first end of the first resistor, and the second end of the current detection circuit includes the second end of the first resistor; Determining the first current flowing through the current detection circuit according to the current detection signal includes: A voltage drop on the first resistor is calculated according to the first voltage signal and the second voltage signal, and the first current is calculated according to the voltage drop and a preset first resistance value corresponding to the first resistor.

[0032] Optionally, in one embodiment, the control device can detect the voltage across the first resistor, i.e., the first voltage signal and the second voltage signal, respectively through its two ADC ports, and obtain the voltage drop across the first resistor by performing a difference calculation. Optionally, in another embodiment, two analog-to-digital conversion circuits can also be respectively provided in the fixed part to respectively perform analog-to-digital conversion on the first voltage signal and the second voltage signal and output them to the control device, so that the control device determines the voltage across the first resistor and obtains the voltage drop across the first resistor by performing a difference. Then, the control device calculates the first current based on the obtained voltage drop and the preset first resistance value of the first resistor pre-stored therein by the R&D personnel. Among them, the resistance value of the first resistor can be selected from 200kΩ-1000kΩ. It can be understood that due to the different resistance values ​​at different positions on the ear, it is generally within 200kΩ-5000kΩ. Therefore, the resistance value of the first resistor is selected as the above resistance value. For the control device, the voltage across the first resistor will match the ADC detection range of the control device, making it easy for the control device to obtain the voltage drop across the first resistor.

[0033] Step S400: When the first current is within a preset current range, determine that the TWS open-back headset is in a wearing state; when the first current is outside the preset current range, determine that the TWS open-back headset is in a non-wearing state.

[0034] In this embodiment, the preset current range is the range of the first current on a complete electrical circuit formed by the grounded first electrode, the user's ear, the second electrode, the current limiting resistor and the current detection circuit, and the first power supply terminal when the user wears the ear-hanging earphones. In other words, when the user wears the ear-hanging earphones, the first current will enter the preset current range due to the addition of the resistance of the user's ear, and when the user does not wear the ear-hanging earphones, the first current will not be within the preset current range. Optionally, the preset current range can be obtained by R&D personnel through multiple experiments during the research and development period and pre-stored in the control device. When the control device determines that the first current is within the preset current range, it is determined that the TWS open earphones are in a wearing state; when the control device determines that the first current is outside the preset current range, it is determined that the TWS open earphones are in a non-wearing state. It is understandable that due to the structural characteristics of the ear-hook earphones, the resistance between the first electrode and the second electrode changes greatly when they are worn and not worn (when worn, there is the resistance of the user's ear, and when not worn, the resistance is extremely small due to direct contact). Therefore, by detecting the current flowing through it, it is possible to accurately detect the wearing of TWS open earphones, especially TWS ear-hook earphones. In this way, this application is based on the structural characteristics and wearing characteristics of TWS open earphones, especially TWS ear-hook earphones. Through the above settings, it is possible to detect the wearing of ear-hook earphones and enable the ear-hook earphones to have functions compatible with wearing detection.

[0035] It should be understood that, from the above content, when the Bluetooth communication module in the ear-hanging headset does not establish a communication connection with the external terminal, that is, when the user does not have the need to use the ear-hanging headset. In order to reduce the power consumption of the headset, the control device is put into a static working state. However, at this time, regardless of whether the ear-hanging headset is worn or not, the above electrical circuit always has a first current in it because there is at least a first resistor and a current-limiting resistor, that is, the electrical circuit always consumes electrical energy, which will have a certain impact on the battery life of the ear-hanging headset.

[0036] To this end, in one embodiment of the present invention, reference Figure 5-Figure 6 , in the fixed part, a switch circuit is further arranged in series between the first power supply terminal and the current limiting resistor, the input end of the switch circuit is connected to the first power supply terminal, and the second end of the switch circuit is electrically connected to the current limiting resistor; The step S200, maintaining a static working state when the Bluetooth communication module has not established a communication connection with the external terminal, includes: Step S210: When the Bluetooth communication module does not establish a communication connection with the external terminal, maintain a static working state and control the switch circuit to be in an open state to disconnect the path between the first power supply terminal and the current limiting resistor; The step S300, when the Bluetooth communication module establishes a communication connection with the external terminal, determining the first current flowing through the current detection circuit according to the current detection signal, comprises: Step S310: When the Bluetooth communication module establishes a communication connection with an external terminal, the switch circuit is controlled to be in a closed state to conduct the path between the first power supply terminal and the current limiting resistor, and the first current flowing through the current detection circuit is determined according to the current detection signal.

[0037] In this embodiment, the switch circuit can be implemented by using a switch tube, such as an IGBT, a MOS tube, etc., and can also be implemented by using a relay module.

[0038] When the control device determines that the Bluetooth communication module has established a communication connection with the external terminal, the switch circuit is controlled to be in a closed state. At this time, the electrical circuit forms a complete path and generates a first current. The control device can determine the wearing state of the earphone according to the first current according to the process of the above embodiment.

[0039] When the control device determines that the Bluetooth communication module has not established a communication connection with the external terminal, it will control the switch circuit to be in an open state. At this time, since the user has no need to use the ear-hook headphones, no matter how the ear-hook headphones are worn, the above-mentioned electrical circuit will be in an open circuit state, that is, the first current does not exist, thereby effectively reducing the power consumption of the ear-hook headphones and improving the actual battery life of the ear-hook headphones.

[0040] Furthermore, it should be understood that, from the above embodiments, although the first current does not exist when the ear-hanging headset is not communicating with the external terminal to reduce power consumption and improve battery life, the first current always exists during the process of establishing communication between the ear-hanging headset and the external terminal, which will also have a certain impact on battery life.

[0041] To this end, in an embodiment of the present application, step S310 includes: Step S311, within a preset first time period after the Bluetooth communication module and the external terminal switch from not establishing a communication connection to establishing a communication connection, controlling the switch circuit to be in an open state; and after the preset first time period, controlling the switch circuit to be in a closed state to conduct the path between the first power supply terminal and the current limiting resistor, and determining the first current flowing through the current detection circuit according to the current detection signal; In this embodiment, if the communication state between the Bluetooth communication module and the external terminal is converted from no communication to communication connection, it means that the user is likely to have just taken the earphone out of the earphone box, and the earphone automatically establishes a communication connection with the user's external terminal. In the preset first time period (preset by the R&D personnel), the user also needs to hold it close to the ear, and then separate the sound output part and the fixing part of the earphone and clip it on the user's ear. In the above process, the user does not have the need to listen to the sound through the earphone, so the control device controls the switch circuit to be in an open state within the preset first time period after the Bluetooth communication module and the external terminal are converted from no communication connection to the communication connection established, and after the preset first time period, the switch circuit is controlled to be in a closed state, so as to shorten the time when the switch circuit is closed as much as possible, so as to reduce the consumption in the above embodiment that the grounded first electrode, the second electrode, the current limiting resistor and the current detection circuit and the first power supply end form a complete electrical circuit or the grounded first electrode, the user's ear, the second electrode, the current limiting resistor and the current detection circuit and the first power supply end form a complete electrical circuit, thereby improving the battery life of the earphone.

[0042] Step S312: When the Bluetooth communication module establishes a communication connection with the external terminal and the duration of maintaining the communication connection reaches a preset second duration, control the switch circuit to switch from an open state to a closed state at intervals of a preset duration and maintain a preset third duration; and when the switch circuit is in a closed state, determine the first current flowing through the current detection circuit according to the current detection signal; wherein the preset second duration is greater than the preset first duration.

[0043] In this embodiment, when the Bluetooth communication module establishes a communication connection with the external terminal and the duration of maintaining the communication connection reaches a preset second duration (set by the R&D personnel), the control device determines that the ear-hook earphones have maintained a communication connection with the external terminal for a long time, rather than just establishing a communication connection. Then it will switch from the open state to the closed state at intervals of a preset duration and maintain a preset third duration, and when the switch circuit is in a closed state, determine the first current flowing through the current detection circuit according to the current detection signal. In other words, the above-mentioned electrical circuit will switch from the open circuit state back to the path state at intervals of a preset duration (set by the R&D personnel) and maintain a preset third duration (set by the R&D personnel), so that the control device can determine the wearing state of the TWS open earphones, especially the TWS ear-hook earphones, according to the first current generated by the electrical circuit in the path state. With such a configuration, the time during which the switch circuit is closed can be shortened as much as possible to reduce the consumption in the above-mentioned embodiment in which the grounded first electrode, the second electrode, the current limiting resistor and the current detection circuit and the first power supply end form a complete electrical circuit or the grounded first electrode, the user's ear, the second electrode, the current limiting resistor and the current detection circuit and the first power supply end form a complete electrical circuit, thereby improving the battery life of the ear-hook headphones.

[0044] Furthermore, it is understandable that the main function that TWS open-ear headphones, especially TWS ear-hook headphones, can achieve based on wearing detection is to control the external terminal to stop playing music when the user takes off the ear-hook headphones. In other words, if the user is currently only wearing ear-hook headphones and the ear-hook headphones establish a communication connection with the external terminal and the ear-hook headphones do not play the audio from the external terminal, for the control device, the frequency of wearing detection can be further reduced on the basis of the above embodiment to improve battery life. Therefore, refer to Figure 7 In one embodiment of the present invention, the preset duration includes a preset fourth duration and a preset fifth duration, and the preset fourth duration is less than the preset fifth duration; the step S312 includes: Step S3121: When the Bluetooth communication module establishes a communication connection with the external terminal and the duration of maintaining the established communication connection reaches a preset second duration, obtaining the playing status of the TWS open-ear headset; Step S3122, when the sound output portion of the TWS open-earphone outputs an audio signal, controlling the switch circuit to switch from an open state to a closed state at intervals of a preset fourth time length and maintain a preset third time length; and when the switch circuit is in the closed state, determining the first current flowing through the current detection circuit according to the current detection signal; Step S3123: When the sound output portion of the TWS open-earphone does not output an audio signal, control the switch circuit to switch from an open state to a closed state at intervals of a preset fifth time duration and maintain a preset third time duration; and when the switch circuit is in a closed state, determine the first current flowing through the current detection circuit according to the current detection signal.

[0045] In this embodiment, after the control device determines that the headset has established a communication state with the external terminal and maintained it for a long time, it will start to obtain the playback status of the TWS open headset, especially the TWS ear-hook headset. If the current ear-hook headset is outputting an audio signal, then in order to ensure that the control device can promptly control the external terminal to stop working when the user is not wearing the ear-hook headset, the control device will control the switch circuit to switch from the open state to the closed state at every preset fourth time length (set by the R&D personnel) and maintain the preset third time length, and perform wearing detection in the closed state. If the current ear-hook headset is not outputting an audio signal, that is, it does not output the audio stored in itself or the audio from the external terminal, the control device controls the switch circuit to switch from the open state to the closed state at every preset fifth time length and maintain the preset third time length. Among them, the preset fourth time length is less than the preset fifth time length, so that the ear-hook headset can ensure the frequency of wearing detection when the audio is output, and reduce the detection frequency when the audio is not output, so as to reduce power consumption and ensure battery life.

[0046] It should be understood that since the appearance structure, tissue composition and distribution of each person's ear are different, and each user wears the ear differently, if the preset current range is preset by the developer as described in the above embodiment, the first current result actually detected may conflict with the preset current range due to individual differences of the user, thereby causing detection failure.

[0047] To this end, in an embodiment of the present application, before step S400, the method further includes: Step S500: The TWS open earphone communicates with the external terminal via the Bluetooth communication module, and obtains the preset current range stored in the external terminal.

[0048] In this embodiment, optionally, the preset current range stored in the external terminal can be the current range stored in the earphone after being measured and calibrated by the staff when the user purchases the earphone in an offline store.

[0049] Optionally, in another embodiment, reference Figure 8 and Fig. 9If the control device does not obtain the above-mentioned preset current range from the external terminal, it will control the corresponding APP on the external terminal to prompt the user to perform wearing calibration. Specifically, before the step S400, the method also includes: Step S610: When the TWS open-type headset communicates with the external terminal through the Bluetooth communication module and determines that the external terminal does not store the preset current range, the TWS open-type headset controls the external terminal to display a wearing calibration request; Step S620: when the TWS open earphone receives a wearing calibration consent instruction from the external terminal, a plurality of wearing modes arranged in a first order are obtained, and a first wearing mode is set as a target wearing mode according to the first order; wherein the plurality of wearing modes arranged in the first order include: the ear-hanging earphone is hung on the lower part of the auricle, the ear-hanging earphone is hung on the middle part of the auricle, the ear-hanging earphone is hung on the upper middle part of the auricle, and the ear-hanging earphone is hung on the upper part of the auricle; Step S630, controlling the external terminal to display the current target wearing method and instructing the user to wear the earphone according to the target wearing method; Step S640: When the TWS open-type earphone receives a wearing completion instruction from an external terminal, the switch circuit is controlled to be in a closed state, and the current first current is obtained and set as a reference current; Step S650: according to the first sequence, set the next wearing mode of the current wearing mode as a new target wearing mode and repeat the steps S630-S640 until all the wearing modes are used as the target wearing modes; Step S660, generating the corresponding preset current range according to the multiple reference currents and storing it in the external terminal; wherein the minimum value of the preset current range is the minimum value of the multiple reference currents, and the maximum value of the preset current range is the maximum value of the multiple reference currents.

[0050] In this embodiment, after the control device in the ear-hook headset establishes a communication connection with the external terminal, if it is found that the corresponding APP in the external terminal does not store a preset current range corresponding to the user, the control device will confirm that the current external terminal is communicating with the ear-hook headset for the first time in history, and will then control the APP on the external terminal to display a wearing calibration request.

[0051] When the user operates the external terminal to agree to wear calibration, the external terminal will output a wear calibration consent instruction to the control device. When the control device receives the instruction, it will use the first wearing method among multiple wearing methods as the target wearing method according to the first order (preset by the R&D personnel) and control the APP on the external terminal to display it. Fig. 9 , the control device will first control the external terminal to display the image of the corresponding ear-hook earphone hanging on the lower part of the auricle in the form of a picture, and then provide a text prompt to inform the user to wear the earphone according to the diagram. After the user wears the earphone according to the diagram, the external terminal will be operated to make the external terminal output a wearing completion instruction to the control device. After receiving the wearing completion instruction, the control device will control the switch circuit to be in a closed state, obtain the current first current and set the current first current as the reference current. In other words, the control device will record the first current in the electrical circuit formed by the grounded first electrode, the user's ear, the second electrode, the current limiting resistor and the current detection circuit, and the first power supply end when the user wears the earphone in the current wearing mode, and use it as the reference current.

[0052] Then, after the control device obtains a reference current, it will display the image corresponding to the next wearing method in the first order and repeat the above calibration process to obtain a reference current corresponding to each wearing method. Fig. 9 The image corresponding to each wearing method is obtained, and a set of calibration data corresponding to each wearing method is obtained.

[0053] After obtaining the reference currents corresponding to all wearing methods in the first order, the control device will arrange the multiple reference currents from large to small, and select the maximum and minimum values ​​therein, and use them as the maximum value of the preset current range and the minimum value of the preset current range, thereby generating the corresponding preset current range and storing it in the APP of the external terminal. In this way, for TWS open-type headphones, especially TWS ear-hook headphones, the preset current range corresponding to the current user can be obtained through the above setting, which effectively ensures the accuracy of the headphone wearing detection for the user.

[0054] In addition, it is understandable that the appearance of the ear, especially the appearance of the auricle, is different for different users. Therefore, users generally have their own preferred wearing methods, and the multiple wearing methods indicated above may not necessarily meet the needs of users. To this end, further, in one embodiment, between step S650 and step S660, the method further includes: Any wearing mode is set as the target wearing mode, and steps S630-S640 are executed.

[0055] In this embodiment, the control device controls the APP on the external terminal to display the currently required wearing method as any wearing method, for example, displaying "Please wear the headphones in the way you like", and then upon receiving the wearing completion instruction, executes the same process as above, so that the control device obtains the reference current corresponding to the user's favorite wearing method, so that the final generated preset current range is more in line with the actual user's needs, thereby further improving the user experience and convenience.

[0056] The present invention also proposes a control device, a memory, a processor, and a TWS open-type earphone wearing detection program stored in the memory and executable on the processor, wherein the TWS open-type earphone wearing detection program is configured to implement the TWS open-type earphone wearing detection method as described in any one of the above items.

[0057] It is worth noting that since the control device of the present invention is based on the above-mentioned TWS open-ear headphone wearing detection method, the embodiments of the control device of the present invention include all technical solutions of all embodiments of the above-mentioned TWS open-ear headphone wearing detection method, and the technical effects achieved are exactly the same, which will not be repeated here.

[0058] The present invention also proposes a TWS open-type headset, the TWS open-type headset comprising a TWS ear-hanging headset and the control device as described above. Figure 2 , Figure 3 and Figure 4 The TWS ear-hanging earphone has an earphone body, a Bluetooth communication module is arranged in the earphone body, the earphone body includes a fixing part and a sound outlet part provided with a sound outlet hole, the sound outlet part and the fixing part are connected by an elastic part, and under the action of the elastic part, the sound outlet part and the fixing part can be maintained in a first position in contact with each other; when the user wears the TWS ear-hanging earphone, the sound outlet part and the fixing part are arranged close to each other under the action of the elastic part so that the earphone body is hung on the auricle and the sound outlet part is arranged to fit the concha cavity inside the auricle; The sound output portion is provided with a first electrode, and the fixed portion is provided with a second electrode. When the sound output portion and the fixed portion are maintained in a first position in contact with each other, the first electrode and the second electrode are in contact; when the user wears the TWS ear-hanging headset, the first electrode is arranged to fit the concha cavity inside the auricle, and the second electrode is arranged to fit the back of the ear; The first electrode is grounded, and a first power supply terminal for providing a first voltage, a current limiting resistor and a current detection circuit are arranged in the fixed part. The first power supply terminal, the current limiting resistor and the current detection circuit are electrically connected in series in sequence, the first end of the current detection circuit is connected to the second end of the current limiting resistor, and the second end of the current detection circuit is electrically connected to the second electrode; the current detection circuit is used to detect the current flowing through itself and output a corresponding current detection signal.

[0059] It is worth noting that since the TWS open-ear headphones of the present invention are based on the above-mentioned control device, the embodiments of the TWS open-ear headphones of the present invention include all technical solutions of all embodiments of the above-mentioned control device, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A TWS open-earphone wearing detection method, characterized in that: The TWS open earphone includes a TWS earphone; the TWS earphone has an earphone body, a Bluetooth communication module is arranged in the earphone body, the earphone body includes a fixing part and a sound outlet part provided with a sound outlet hole, the sound outlet part and the fixing part are connected by an elastic part, and under the action of the elastic part, the sound outlet part and the fixing part can be maintained in a first position in contact with each other; when the user wears the TWS earphone, the sound outlet part and the fixing part are arranged close to each other under the action of the elastic part so that the earphone body is hung on the auricle and the sound outlet part is arranged to fit the concha cavity inside the auricle; The sound output portion is provided with a first electrode, and the fixed portion is provided with a second electrode, and when the sound output portion and the fixed portion are maintained at a first position in contact with each other, the first electrode and the second electrode are in contact; When the user wears the TWS earphone, the first electrode is arranged to fit the concha cavity inside the auricle, and the second electrode is arranged to fit the back of the ear; The first electrode is grounded, a first power supply terminal for providing a first voltage, a current limiting resistor and a current detection circuit are arranged in the fixed portion, the first power supply terminal, the current limiting resistor and the current detection circuit are electrically connected in series in sequence, a first end of the current detection circuit is connected to a second end of the current limiting resistor, and a second end of the current detection circuit is electrically connected to the second electrode; The current detection circuit is used to detect the current flowing through itself and output a corresponding current detection signal; The TWS open-ear headset wearing detection method comprises: Step S100: the TWS open headset obtains the communication status between its own Bluetooth communication module and the external terminal; Step S200: When the Bluetooth communication module has not established a communication connection with the external terminal, maintain a static working state; Step S300: when the Bluetooth communication module establishes a communication connection with an external terminal, determining a first current flowing through the current detection circuit according to the current detection signal; Step S400: When the first current is within a preset current range, determine that the TWS open-back headset is in a wearing state; when the first current is outside the preset current range, determine that the TWS open-back headset is in a non-wearing state.

2. The TWS open-ear headset wearing detection method according to claim 1, characterized in that: The current detection circuit includes a first resistor, the first resistor is arranged in series in a path between the current limiting resistor and the second electrode, the current detection signal includes a first voltage signal at a first end of the first resistor and a second voltage signal at a second end of the first resistor; the first end of the current detection circuit includes the first end of the first resistor, and the second end of the current detection circuit includes the second end of the first resistor; Determining the first current flowing through the current detection circuit according to the current detection signal includes: A voltage drop on the first resistor is calculated according to the first voltage signal and the second voltage signal, and the first current is calculated according to the voltage drop and a preset first resistance value corresponding to the first resistor.

3. The TWS open-ear headset wearing detection method according to claim 2, characterized in that: In the fixed part, a switch circuit is further arranged in series between the first power supply terminal and the current limiting resistor, the input end of the switch circuit is connected to the first power supply terminal, and the second end of the switch circuit is electrically connected to the current limiting resistor; The step S200, maintaining a static working state when the Bluetooth communication module has not established a communication connection with the external terminal, includes: Step S210: When the Bluetooth communication module does not establish a communication connection with the external terminal, maintain a static working state and control the switch circuit to be in an open state to disconnect the path between the first power supply terminal and the current limiting resistor; The step S300, when the Bluetooth communication module establishes a communication connection with the external terminal, determining the first current flowing through the current detection circuit according to the current detection signal, comprises: Step S310: When the Bluetooth communication module establishes a communication connection with an external terminal, the switch circuit is controlled to be in a closed state to conduct the path between the first power supply terminal and the current limiting resistor, and the first current flowing through the current detection circuit is determined according to the current detection signal.

4. The TWS open-ear headset wearing detection method according to claim 3, characterized in that: The step S310 includes: Step S311, within a preset first time period after the Bluetooth communication module and the external terminal switch from not establishing a communication connection to establishing a communication connection, controlling the switch circuit to be in an open state; and after the preset first time period, controlling the switch circuit to be in a closed state to conduct the path between the first power supply terminal and the current limiting resistor, and determining the first current flowing through the current detection circuit according to the current detection signal; Step S312: When the Bluetooth communication module establishes a communication connection with the external terminal and the duration of maintaining the communication connection reaches a preset second duration, control the switch circuit to switch from an open state to a closed state at intervals of a preset duration and maintain a preset third duration; and when the switch circuit is in a closed state, determine the first current flowing through the current detection circuit according to the current detection signal; wherein the preset second duration is greater than the preset first duration.

5. The TWS open-ear headset wearing detection method according to claim 4, characterized in that: The preset duration includes a preset fourth duration and a preset fifth duration, and the preset fourth duration is shorter than the preset fifth duration; The step S312 includes: Step S3121: When the Bluetooth communication module establishes a communication connection with the external terminal and the duration of maintaining the established communication connection reaches a preset second duration, obtaining the playing status of the TWS open-ear headset; Step S3122, when the sound output portion of the TWS open-earphone outputs an audio signal, controlling the switch circuit to switch from an open state to a closed state at intervals of a preset fourth time length and maintain a preset third time length; and when the switch circuit is in the closed state, determining the first current flowing through the current detection circuit according to the current detection signal; Step S3123: When the sound output portion of the TWS open-earphone does not output an audio signal, control the switch circuit to switch from an open state to a closed state at intervals of a preset fifth time duration and maintain a preset third time duration; and when the switch circuit is in a closed state, determine the first current flowing through the current detection circuit according to the current detection signal.

6. The TWS open-ear headset wearing detection method according to claim 5, characterized in that: Before step S400, the method further includes: Step S500: The TWS open earphone communicates with the external terminal via the Bluetooth communication module, and obtains the preset current range stored in the external terminal.

7. The TWS open-ear headset wearing detection method according to claim 6, characterized in that: Before step S400, the method further includes: Step S610: When the TWS open-type headset communicates with the external terminal through the Bluetooth communication module and determines that the external terminal does not store the preset current range, the TWS open-type headset controls the external terminal to display a wearing calibration request; Step S620: when the TWS open earphone receives a wearing calibration consent instruction from the external terminal, a plurality of wearing modes arranged in a first order are obtained, and a first wearing mode is set as a target wearing mode according to the first order; wherein the plurality of wearing modes arranged in the first order include: the ear-hanging earphone is hung on the lower part of the auricle, the ear-hanging earphone is hung on the middle part of the auricle, the ear-hanging earphone is hung on the upper middle part of the auricle, and the ear-hanging earphone is hung on the upper part of the auricle; Step S630, controlling the external terminal to display the current target wearing method and instructing the user to wear the earphone according to the target wearing method; Step S640: When the TWS open-type earphone receives a wearing completion instruction from an external terminal, the switch circuit is controlled to be in a closed state, and the current first current is obtained and set as a reference current; Step S650: according to the first sequence, set the next wearing mode of the current wearing mode as a new target wearing mode and repeat the steps S630-S640 until all the wearing modes are used as the target wearing modes; Step S660, generating the corresponding preset current range according to the multiple reference currents and storing it in the external terminal; wherein the minimum value of the preset current range is the minimum value of the multiple reference currents, and the maximum value of the preset current range is the maximum value of the multiple reference currents.

8. The TWS open-ear headset wearing detection method according to claim 7, characterized in that: Between step S650 and step S660, the method further includes: Any wearing mode is set as the target wearing mode, and steps S630-S640 are executed.

9. A control device, characterized in that: The control device includes: a memory, a processor, and a TWS open-type earphone wearing detection program stored in the memory and executable on the processor, wherein the TWS open-type earphone wearing detection program is configured to implement the TWS open-type earphone wearing detection method as described in any one of claims 1 to 8 above.

10. A TWS open-ear headset, characterized in that: The TWS open earphone comprises a TWS earphone and a control device as claimed in claim 9; The TWS ear-hanging earphone has an earphone body, a Bluetooth communication module is arranged in the earphone body, the earphone body includes a fixing part and a sound outlet part provided with a sound outlet hole, the sound outlet part and the fixing part are connected by an elastic part, and under the action of the elastic part, the sound outlet part and the fixing part can be maintained in a first position in contact with each other; when the user wears the TWS ear-hanging earphone, the sound outlet part and the fixing part are arranged close to each other under the action of the elastic part so that the earphone body is hung on the auricle and the sound outlet part is arranged in contact with the concha cavity inside the auricle; The sound output portion is provided with a first electrode, and the fixed portion is provided with a second electrode. When the sound output portion and the fixed portion are maintained in a first position in contact with each other, the first electrode and the second electrode are in contact; when the user wears the TWS ear-hanging headset, the first electrode is arranged to fit the concha cavity inside the auricle, and the second electrode is arranged to fit the back of the ear; The first electrode is grounded, and a first power supply terminal for providing a first voltage, a current limiting resistor and a current detection circuit are arranged in the fixed part. The first power supply terminal, the current limiting resistor and the current detection circuit are electrically connected in series in sequence, the first end of the current detection circuit is connected to the second end of the current limiting resistor, and the second end of the current detection circuit is electrically connected to the second electrode; the current detection circuit is used to detect the current flowing through itself and output a corresponding current detection signal.

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