Tws open earphone wearing detection method, control device and tws open earphone

Abstract

The application discloses a TWS open earphone wearing detection method, a control device and a TWS open earphone. The TWS open earphone comprises a TWS hanging earphone, the TWS hanging earphone has an earphone body, the body comprises a fixed part and a sound outlet part provided with a sound outlet hole, the sound outlet part is provided with a first electrode, and the fixed part is provided with a second electrode. The method comprises the following steps: firstly, the communication state of the Bluetooth communication module and the external terminal is acquired; in the case that the Bluetooth communication module and the external terminal do not establish a communication connection, a static working state is kept; in the case that the Bluetooth communication module and the external terminal establish a communication connection, the first current flowing through the current detection circuit is determined according to a current detection signal; when the first current is within a preset current range, it is determined that the TWS open earphone is in a wearing state; and when the first current is outside the preset current range, it is determined that the TWS open earphone is in a non-wearing state. The application aims to realize wearing detection of the TWS open earphone, in particular, the hanging earphone.

Description

Technical Field

[0001] The present invention relates to the field of earphone control technology, and in particular to a TWS open-earphone wearing detection method, a control device, and a TWS open-earphone. Background Art

[0002] TWS open-back headphones, especially those with hanging earphones, are not suitable for wear 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, how to implement wear detection for TWS open-back headphones, especially those with hanging earphones, is very important. Summary of the Invention

[0003] 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.

[0004] The present invention discloses a wearing detection method for TWS open-ear headphones, wherein the TWS open-ear headphones include TWS earphones; the TWS earphones have an earphone body, a Bluetooth communication module is provided in the earphone body, the earphone body includes a fixed portion and a sound outlet portion provided with a sound outlet hole, the sound outlet portion and the fixed portion are connected by an elastic portion, and under the action of the elastic portion, the sound outlet portion and the fixed portion can be maintained in a first position in contact with each other; when a user wears the TWS earphones, the sound outlet portion and the fixed portion are arranged close to each other under the action of the elastic portion so that the earphone body is hung on the auricle and the sound outlet portion is arranged in contact with the concha cavity inside the auricle;

[0005] A first electrode is provided on the sound emitting portion, and a second electrode is provided on the fixing portion. When the sound emitting portion and the fixing 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 earphones, 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.

[0006] 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 provided 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 configured to detect current flowing through the current detection circuit and output a corresponding current detection signal.

[0007] The TWS open-earphone wearing detection method includes:

[0008] Step S100: The TWS open earphone obtains the communication status between its own Bluetooth communication module and the external terminal;

[0009] Step S200: When no communication connection is established between the Bluetooth communication module and the external terminal, the module maintains a static working state;

[0010] 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;

[0011] Step S400: When the first current is within a preset current range, determine that the TWS open-back earphones are in a wearing state; when the first current is outside the preset current range, determine that the TWS open-back earphones are in a non-wearing state.

[0012] Optionally, the current detection circuit includes a first resistor, which 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;

[0013] Determining the first current flowing through the current detection circuit according to the current detection signal includes:

[0014] A voltage drop across the first resistor is calculated based on the first voltage signal and the second voltage signal, and the first current is calculated based on the voltage drop and a preset first resistance value corresponding to the first resistor.

[0015] Optionally, in the fixed portion, a switch circuit is further provided in series between the first power supply terminal and the current-limiting resistor, an input terminal of the switch circuit is connected to the first power supply terminal, and a second terminal of the switch circuit is electrically connected to the current-limiting resistor;

[0016] The step S200, maintaining a static working state when the Bluetooth communication module has not established a communication connection with the external terminal, includes:

[0017] 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;

[0018] The step S300 of determining the first current flowing through the current detection circuit according to the current detection signal when the Bluetooth communication module establishes a communication connection with the external terminal includes:

[0019] Step S310: When the Bluetooth communication module establishes a communication connection with the external terminal, control 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 determine the first current flowing through the current detection circuit according to the current detection signal.

[0020] Optionally, step S310 includes:

[0021] Step S311: Controlling the switch circuit to be in an open state within a preset first duration after the Bluetooth communication module switches from not establishing a communication connection to establishing a communication connection with the external terminal; and after the preset first duration, controlling the switch circuit to be in a closed state to conduct a path between the first power supply terminal and the current-limiting resistor, and determining the first current flowing through the current detection circuit based on the current detection signal;

[0022] 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 the state for a preset third duration; and when the switch circuit is in the 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.

[0023] 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:

[0024] Step S3121: 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, obtaining the playback status of the TWS open-ear headset;

[0025] Step S3122: When the sound output portion of the TWS open-earphone outputs an audio signal, control the switch circuit to switch from an open state to a closed state at intervals of a preset fourth duration and maintain the closed state for a preset third duration; and when the switch circuit is in the closed state, determine the first current flowing through the current detection circuit according to the current detection signal;

[0026] 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.

[0027] Optionally, before step S400, the method further includes:

[0028] Step S500: The TWS open earphone communicates with the external terminal through the Bluetooth communication module and obtains the preset current range stored in the external terminal.

[0029] Optionally, before step S400, the method further includes:

[0030] Step S610: When the TWS open-ear headset communicates with the external terminal via the Bluetooth communication module and determines that the external terminal does not store the preset current range, the TWS open-ear headset controls the external terminal to display a wearing calibration request;

[0031] Step S620: When the TWS open earphone receives a wearing calibration consent instruction from the external terminal, obtain multiple wearing methods arranged in a first order, and set the first wearing method as the target wearing method according to the first order; wherein the multiple wearing methods arranged in the first order include: the earphone is hung on the lower part of the auricle, the earphone is hung on the middle part of the auricle, the earphone is hung on the upper and middle part of the auricle, and the earphone is hung on the upper part of the auricle;

[0032] Step S630: Control the external terminal to display the current target wearing method and instruct the user to wear the earphones according to the target wearing method;

[0033] Step S640: When the TWS open-ear headset receives a wearing completion instruction from an external terminal, controlling the switch circuit to be in a closed state, obtaining the current first current, and setting the current first current as a reference current;

[0034] Step S650: setting the next wearing mode after the current wearing mode as a new target wearing mode according to the first sequence and repeating steps S630-S640 until all the wearing modes are used as the target wearing modes;

[0035] Step S660: Generate the corresponding preset current range based on the multiple reference currents and store 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.

[0036] Optionally, between step S650 and step S660, the method further includes:

[0037] Any wearing mode is set as the target wearing mode, and steps S630-S640 are executed.

[0038] The present application also proposes a control device, which includes: a memory, a processor, and a TWS open-earphone wearing detection program stored on the memory and runnable on the processor, wherein the TWS open-earphone wearing detection program is configured to implement the TWS open-earphone wearing detection method as described in any one of the above items.

[0039] The present application also proposes a TWS open-ear headset, which includes a TWS earphone and the control device as described above;

[0040] The TWS ear-hook earphone has an earphone body, a Bluetooth communication module is provided 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-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;

[0041] A first electrode is provided on the sound emitting portion, and a second electrode is provided on the fixing portion. When the sound emitting portion and the fixing 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 earphones, 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.

[0042] 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 provided 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.

[0043] The present invention discloses a wear detection method for TWS open-ear headphones. The method comprises: first obtaining the communication status between the Bluetooth communication module and an external terminal; maintaining a static operating state when the Bluetooth communication module and the external terminal have not established a communication connection; determining a first current flowing through a current detection circuit based on a current detection signal when the Bluetooth communication module and the external terminal have established a communication connection; determining that the TWS open-ear headphones are in a worn state when the first current is within a preset current range; and determining that the TWS open-ear headphones are not in a worn state when the first current is outside the preset current range. It is understandable that due to the structural characteristics of the earphones, the resistance between the first electrode and the second electrode changes significantly when the earphones are worn and when they are not worn (when worn, the resistance is the user's ear, while when not worn, the resistance is extremely small due to direct contact). Therefore, by detecting the current flowing therethrough, wear detection of the TWS open-ear headphones, particularly TWS earphones, can be accurately achieved. Thus, based on the structural characteristics and wearing characteristics of TWS open-ear headphones, particularly TWS earphones, the present application can achieve wear detection of the earphones and provide the earphones with wear detection functions through the above-mentioned configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0045] Figure 1 This is a flow chart of an embodiment of a TWS open-earphone wearing detection method of the present application;

[0046] Figure 2 This is a structural diagram of an embodiment of the TWS earphones of this application;

[0047] Figure 3 This is a schematic diagram of the TWS earphones of this application being worn on the user's ears;

[0048] Figure 4 This is a schematic diagram of the circuit module in an embodiment of the TWS open-ear headphones of this application;

[0049] Figure 5 This is a schematic diagram of the circuit module in another embodiment of the TWS open-ear headphones of the present application;

[0050] Figure 6 This is a flow chart of another embodiment of the TWS open-earphone wearing detection method of the present application;

[0051] Figure 7 This is a flow chart of another embodiment of the TWS open-earphone wearing detection method of the present application;

[0052] Figure 8 This is a flow chart of another embodiment of the TWS open-earphone wearing detection method of the present application;

[0053] Figure 9 This is a schematic diagram of multiple wearing methods for the TWS earphones in this application.

[0054] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0056] 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 various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not 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" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0058] TWS open-back headphones, especially those with hanging earphones, are not suitable for wear 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, how to implement wear detection for TWS open-back headphones, especially those with hanging earphones, is very important.

[0059] It’s important to understand that since in-ear headphones are inserted into the user’s external auditory canal, they can be detected using light reflection. Similarly, the earmuffs of headphones completely enclose the user’s ears, creating a relatively sealed space, so they can also be detected using light reflection.

[0060] However, reference Figure 2 and Figure 3 , for TWS open-ear 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-ear headphones, especially TWS ear-hook headphones.

[0061] For this purpose, refer to Figures 1-4 The present invention proposes a wearing detection method for TWS open-ear headphones, wherein the TWS open-ear headphones include TWS earphones; the TWS earphones have an earphone body, a Bluetooth communication module is provided in the earphone body, the earphone body includes a fixed portion and a sound outlet portion provided with a sound outlet hole, the sound outlet portion and the fixed portion are connected by an elastic portion, and under the action of the elastic portion, the sound outlet portion and the fixed portion can be maintained in a first position in contact with each other; when a user wears the TWS earphones, the sound outlet portion and the fixed portion are arranged close to each other under the action of the elastic portion so that the earphone body is hung on the auricle and the sound outlet portion is arranged in contact with the concha cavity inside the auricle;

[0062] A first electrode is provided on the sound emitting portion, and a second electrode is provided on the fixing portion. When the sound emitting portion and the fixing 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 earphones, 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.

[0063] 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 provided 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.

[0064] In this embodiment, TWS open earphones, especially 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 from 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 2 When the user is not wearing the earphones, the sound outlet and the fixing portion are able to maintain contact with each other in the first position under the action of the elastic portion. When the user needs to wear the earphones, the user applies force to separate the contacting sound outlet and fixing portion, and then places the sound outlet on the concha of the auricle and the fixing portion on the back of the auricle. In this way, under the action of the elastic portion, the sound outlet and fixing portion clamp the auricle, so that the earphones are hung on the user's auricle.

[0065] The first and second electrodes can be implemented as metal electrode sheets, such as copper. The current-limiting resistor can be implemented as a resistor and is used to limit the upper limit of the current in its path. This prevents excessive current in the path from causing damage to the device when the first and second electrodes are in direct contact (i.e., when the sound-emitting portion and the fixed portion are in contact in the first position), effectively improving the safety of the entire circuit. The first power supply terminal is used to output a first voltage, which is provided by the voltage conversion circuit in the fixed portion after converting the battery voltage.

[0066] 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.

[0067] refer to Figures 1-4 In one embodiment of the present invention, the TWS open-earphone wearing detection method includes:

[0068] Step S100: The TWS open earphone obtains the communication status between its own Bluetooth communication module and the external terminal;

[0069] In this embodiment, the control device in the TWS open-ear headset, especially the TWS ear-hook headset, is electrically connected to the Bluetooth communication device and can obtain its communication status with the external terminal via the Bluetooth communication device.

[0070] Step S200: When no communication connection is established between the Bluetooth communication module and the external terminal, the module maintains a static working state;

[0071] In this embodiment, when the control device confirms that no communication connection has been 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 earphones are in a wearing state based on the first current.

[0072] 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;

[0073] In this embodiment, reference Figures 1-4 , 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;

[0074] Determining the first current flowing through the current detection circuit according to the current detection signal includes:

[0075] A voltage drop across the first resistor is calculated based on the first voltage signal and the second voltage signal, and the first current is calculated based on the voltage drop and a preset first resistance value corresponding to the first resistor.

[0076] Optionally, in an embodiment, the control device can detect the voltage across the first resistor through its two ADC ports, i.e. the first voltage signal and the second voltage signal, respectively, and calculate the voltage drop across the first resistor by difference. Optionally, in another embodiment, two analog-to-digital conversion circuits can be further provided in the fixed part to respectively convert the first voltage signal and the second voltage signal into digital signals and output to the control device, so that the control device determines the voltage across the first resistor and calculates the voltage drop across the first resistor by difference. Then, the control device calculates the first current according to the voltage drop obtained and the preset first resistance value of the first resistor pre-stored in it. The resistance value of the first resistor can be selected as 200kΩ-1000kΩ. It can be understood that, since the resistance values of different positions on the ear are different, generally within 200kΩ-5000kΩ. Therefore, selecting the resistance value of the first resistor as the above value can make the voltage across the first resistor match the ADC detection range of the control device, so that the control device can easily obtain the voltage drop across the first resistor.

[0077] In step S400, when the first current is within the preset current range, it is determined that the TWS open earphone is in a wearing state; when the first current is outside the preset current range, it is determined that the TWS open earphone is in a non-wearing state.

[0078] In the embodiment, the preset current range is the range of the first current in the complete electrical circuit formed by the grounded first electrode, the ear of the user, the second electrode, the current detection circuit, the current limiting resistor and the first power supply when the user wears the ear-hanging earphone. In other words, when the user wears the ear-hanging earphone, the resistance value of the ear of the user is added, so that the first current enters the preset current range, and when the user does not wear the ear-hanging earphone, the first current is not within the preset current range. Optionally, the preset current range can be obtained by the developer through multiple experiments during the development 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 earphone is 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 earphone is in a non-wearing state. It can be understood that, due to the structural characteristics of the ear-hanging earphone, the resistance between the first electrode and the second electrode changes greatly (when worn, the resistance value of the ear of the user is added; when not worn, the resistance is extremely small because of direct contact) when the ear-hanging earphone is worn and not worn. Therefore, by detecting the current flowing through the ear-hanging earphone, the wearing detection of the TWS open earphone, especially the TWS ear-hanging earphone, can be accurately realized. Thus, based on the structural characteristics and wearing characteristics of the TWS open earphone, especially the TWS ear-hanging earphone, the wearing detection of the ear-hanging earphone can be realized by the above-mentioned arrangement, and the ear-hanging earphone can be provided with the function of wearing detection.

[0079] 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-mentioned electrical circuit always has a first current because there is at least a first resistor and a current-limiting resistor in the electrical circuit, that is, the electrical circuit always consumes electrical energy, which will have a certain impact on the battery life of the ear-hanging headset.

[0080] To this end, in one embodiment of the present invention, reference is made to Figures 5-6 , in the fixed portion, a switch circuit is further provided in series between the first power supply terminal and the current-limiting resistor, an input terminal of the switch circuit is connected to the first power supply terminal, and a second terminal of the switch circuit is electrically connected to the current-limiting resistor;

[0081] The step S200, maintaining a static working state when the Bluetooth communication module has not established a communication connection with the external terminal, includes:

[0082] 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;

[0083] The step S300 of determining the first current flowing through the current detection circuit according to the current detection signal when the Bluetooth communication module establishes a communication connection with the external terminal includes:

[0084] Step S310: When the Bluetooth communication module establishes a communication connection with the external terminal, control 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 determine the first current flowing through the current detection circuit according to the current detection signal.

[0085] 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.

[0086] When the control device determines that the Bluetooth communication module has established a communication connection with the external terminal, it controls the switch circuit to be in a closed state. At this time, the above-mentioned electrical circuit forms a complete path, generating a first current. The control device can determine the wearing state of the earphone based on the first current according to the process of the above embodiment.

[0087] In the case that the control device determines that the Bluetooth communication module and the external terminal have not established a communication connection, the switch circuit is controlled to be in an open state. At this time, since the user does not have a demand for using the ear-hanging earphone, the above-mentioned electric circuit is in an open circuit state regardless of the wearing state of the ear-hanging earphone, that is, there is no first current, thereby effectively reducing the power consumption of the ear-hanging earphone and improving the actual endurance of the ear-hanging earphone.

[0088] Further, it needs to be understood that, as can be known from the above-mentioned embodiment, although there is no first current when the ear-hanging earphone is not in communication with the external terminal to reduce the power consumption and improve the endurance. However, during the process of establishing communication between the ear-hanging earphone and the external terminal, there is always a first current, thereby also affecting the endurance to a certain extent.

[0089] Therefore, in an embodiment of the present application, the step S310 comprises:

[0090] The step S311 comprises: controlling the switch circuit to be in an open state within a preset first time duration after the Bluetooth communication module and the external terminal are switched from not establishing a communication connection to establishing a communication connection; and controlling the switch circuit to be in a closed state to turn on the path between the first power supply end and the current limiting resistor after the preset first time duration, and determining the first current flowing through the current detection circuit according to the current detection signal.

[0091] In the embodiment, if the communication state between the Bluetooth communication module and the external terminal is switched from not communicating to establishing a communication connection, it indicates that the user is very likely to have just taken the ear-hanging earphone out of the earphone box, and the ear-hanging earphone automatically establishes a communication connection with the external terminal of the user. Within the preset first time duration (preset by the R&D personnel) in the future, the user still needs to hold it and close to the ear, and then separate the sound output part and the fixing part of the ear-hanging earphone and clamp it on the user's ear. During the above-mentioned process, the user does not have a demand for listening to music through the ear-hanging earphone, so the control device controls the switch circuit to be in an open state within the preset first time duration after the Bluetooth communication module and the external terminal are switched from not establishing a communication connection to establishing a communication connection, and then controls the switch circuit to be in a closed state after the preset first time duration, thereby shortening the time duration of the closed switch circuit as much as possible to reduce the consumption of the first electrode, the second electrode, the current limiting resistor, the current detection circuit and the first power supply end forming a complete electric circuit or the first electrode, the ear of the user, the second electrode, the current limiting resistor and the current detection circuit and the first power supply end forming a complete electric circuit in the above-mentioned embodiment, thereby improving the endurance of the ear-hanging earphone.

[0092] 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 the state for a preset third duration; and when the switch circuit is in the 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.

[0093] In this embodiment, when the Bluetooth communication module establishes a communication connection with the external terminal and the duration of 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, the first current flowing through the current detection circuit is determined according to the current detection signal. In other words, the above-mentioned electrical circuit will switch from the open 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, based on the first current generated by the electrical circuit in the path state. With such a setting, the time during which the switching 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.

[0094] Furthermore, it is understandable that the main function that TWS open earphones, especially TWS ear-hook earphones, can achieve based on wearing detection is to control the external terminal to stop playing music when the user takes off the ear-hook earphones. In other words, if the user is currently only wearing ear-hook earphones and the ear-hook earphones establish a communication connection with the external terminal and the ear-hook earphones 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; step S312 includes:

[0095] Step S3121: 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, obtaining the playback status of the TWS open-ear headset;

[0096] Step S3122: When the sound output portion of the TWS open-earphone outputs an audio signal, control the switch circuit to switch from an open state to a closed state at intervals of a preset fourth duration and maintain the closed state for a preset third duration; and when the switch circuit is in the closed state, determine the first current flowing through the current detection circuit according to the current detection signal;

[0097] 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.

[0098] In this embodiment, after the control device determines that the earphone 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 earphone, especially the TWS ear-hook earphone. If the ear-hook earphone is currently 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 earphone, the control device will control the switch circuit to switch from the open state to the closed state at intervals of a 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 ear-hook earphone is currently not outputting an audio signal, that is, it is not outputting its own stored audio or audio from the external terminal, the control device controls the switch circuit to switch from the open state to the closed state at intervals of a 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 earphone can ensure the frequency of wearing detection when outputting audio, and reduce the detection frequency when no audio is output, so as to reduce power consumption and ensure battery life.

[0099] It should be understood that since each person's ear shape, structure, and tissue composition vary, and each user wears the earpiece differently, if the preset current range is set by the developer as described in the above embodiment, the actual detected first current result may conflict with the preset current range due to individual user differences, thereby causing detection failure.

[0100] To this end, in one embodiment of the present application, before step S400, the method further includes:

[0101] Step S500: The TWS open earphone communicates with the external terminal through the Bluetooth communication module and obtains the preset current range stored in the external terminal.

[0102] In this embodiment, optionally, the preset current range stored in the external terminal may be the current range that is measured and calibrated by the staff when the user purchases the headphones at an offline store and then stored in the headphones.

[0103] Optionally, in another embodiment, reference Figure 8 and Figure 9 If 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 step S400, the method further includes:

[0104] Step S610: When the TWS open-ear headset communicates with the external terminal via the Bluetooth communication module and determines that the external terminal does not store the preset current range, the TWS open-ear headset controls the external terminal to display a wearing calibration request;

[0105] Step S620: When the TWS open earphone receives a wearing calibration consent instruction from the external terminal, obtain multiple wearing methods arranged in a first order, and set the first wearing method as the target wearing method according to the first order; wherein the multiple wearing methods arranged in the first order include: the earphone is hung on the lower part of the auricle, the earphone is hung on the middle part of the auricle, the earphone is hung on the upper and middle part of the auricle, and the earphone is hung on the upper part of the auricle;

[0106] Step S630: Control the external terminal to display the current target wearing method and instruct the user to wear the earphones according to the target wearing method;

[0107] Step S640: When the TWS open-ear headset receives a wearing completion instruction from an external terminal, controlling the switch circuit to be in a closed state, obtaining the current first current, and setting the current first current as a reference current;

[0108] Step S650: setting the next wearing mode after the current wearing mode as a new target wearing mode according to the first sequence and repeating steps S630-S640 until all the wearing modes are used as the target wearing modes;

[0109] Step S660: Generate the corresponding preset current range based on the multiple reference currents and store 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.

[0110] In the embodiment, after the control device in the ear-hanging earphone establishes a communication connection with the external terminal, if it is found that the corresponding APP in the external terminal does not store the preset current range corresponding to the user, the control device confirms that the current external terminal is historically connected to the ear-hanging earphone for the first time, and then controls the APP on the external terminal to display a wearing calibration request.

[0111] When the user operates the external terminal to agree to wear calibration, the external terminal outputs a wearing calibration agreement instruction to the control device. When the control device receives the instruction, it will take the first wearing mode in the plurality of wearing modes as the target wearing mode in the first order (preset by the R&D personnel), and control the APP on the external terminal to display. For example, referring to Figure 9 , the control device will first control the external terminal to display an image corresponding to the ear-hanging earphone hanging in the lower part of the auricle in the form of a picture, and then display a text prompt to inform the user to wear the earphone according to the illustrated mode. When the user wears the earphone according to the illustrated mode, the user will operate the external terminal to make the external terminal output a wearing completion instruction to the control device. After the control device receives the wearing completion instruction, it will control the switch circuit to be in a closed state, and 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 on the electrical loop formed by the first electrode, the user's ear, the second electrode, the current detection circuit, and the first power supply end in the current wearing mode, and set it as the reference current.

[0112] Then, after the control device obtains a reference current, it will display the image corresponding to the next wearing mode in the first order and repeat the above calibration process to obtain a reference current corresponding to each wearing mode. For example, according to the first order, the pictures corresponding to each wearing mode in Figure 9 are displayed in turn, and a set of calibration data corresponding to each wearing mode is obtained.

[0113] After obtaining all the reference currents corresponding to the wearing modes in the first order, the control device will arrange the plurality of reference currents from large to small, and select the maximum value and the minimum value as the maximum value of the preset current range and the minimum value of the preset current range, and then generate the corresponding preset current range and store it in the APP of the external terminal. In this way, for TWS open earphones, especially TWS ear-hanging earphones, the above setting can obtain a preset current range corresponding to the current user, which effectively ensures the accuracy of earphone wearing detection for the user.

[0114] Furthermore, it is understandable that the appearance of the ear, especially the appearance of the auricle, varies 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:

[0115] Any wearing mode is set as the target wearing mode, and steps S630-S640 are executed.

[0116] 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 under the corresponding 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.

[0117] The present invention also proposes a control device, a memory, a processor, and a TWS open-earphone wearing detection program stored on the memory and runnable on the processor, wherein the TWS open-earphone wearing detection program is configured to implement the TWS open-earphone wearing detection method as described in any one of the above items.

[0118] It is worth noting that since the control device of the present invention is based on the above-mentioned TWS open-earphone wearing detection method, the embodiments of the control device of the present invention include all the technical solutions of all the embodiments of the above-mentioned TWS open-earphone wearing detection method, and the technical effects achieved are exactly the same, which will not be repeated here.

[0119] The present invention also proposes a TWS open-ear headset, which includes a TWS earphone and a control device as described above. Figure 2 、 Figure 3 and Figure 4 The TWS ear-hook earphone has an earphone body, a Bluetooth communication module is provided 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-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;

[0120] A first electrode is provided on the sound emitting portion, and a second electrode is provided on the fixing portion. When the sound emitting portion and the fixing 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 earphones, 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.

[0121] 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 provided 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.

[0122] 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 the technical solutions of all the embodiments of the above-mentioned control device, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0123] 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 transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application 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-ear earphones include TWS earphones; the TWS earphones have an earphone body, a Bluetooth communication module is provided in the earphone body, the earphone body includes a fixed portion and a sound outlet portion provided with a sound outlet hole, the sound outlet portion and the fixed portion are connected by an elastic portion, and under the action of the elastic portion, the sound outlet portion and the fixed portion can be maintained in a first position of contact with each other; when a user wears the TWS earphones, the sound outlet portion and the fixed portion are arranged close to each other under the action of the elastic portion so that the earphone body is hung on the auricle and the sound outlet portion is arranged in contact with the concha cavity inside the auricle; The sound emitting portion is provided with a first electrode, and the fixed portion is provided with a second electrode, and when the sound emitting 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 earphones, 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 provided 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. 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 current flowing through itself and output a corresponding current detection signal. A switch circuit is also provided in series between the first power supply terminal and the current limiting resistor. The TWS open-earphone wearing detection method includes: Step S100: The TWS open earphone obtains the communication status between its own Bluetooth communication module and the external terminal; Step S200: When no communication connection is established between the Bluetooth communication module and the external terminal, the module maintains 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, determining that the TWS open-back earphone is in a wearing state; when the first current is outside the preset current range, determining that the TWS open-back earphone is in a non-wearing state; Before step S400, the method further includes: Step S500: The TWS open earphone communicates with an external terminal via the Bluetooth communication module and obtains the preset current range stored in the external terminal; Before step S400, the method further includes: Step S610: When the TWS open-ear headset communicates with the external terminal via the Bluetooth communication module and determines that the external terminal does not store the preset current range, the TWS open-ear 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, obtain multiple wearing methods arranged in a first order, and set the first wearing method as the target wearing method according to the first order; wherein the multiple wearing methods arranged in the first order include: the earphone is hung on the lower part of the auricle, the earphone is hung on the middle part of the auricle, the earphone is hung on the upper and middle part of the auricle, and the earphone is hung on the upper part of the auricle; Step S630: Control the external terminal to display the current target wearing method and instruct the user to wear the earphones according to the target wearing method; Step S640: When the TWS open-ear headset receives a wearing completion instruction from an external terminal, controlling the switch circuit to be in a closed state, obtaining the current first current, and setting the current first current as a reference current; Step S650: according to the first sequence, set the next wearing mode after the current wearing mode as a new target wearing mode and repeat steps S630-S640 until all the wearing modes are used as the target wearing modes; Step S660: Generate the corresponding preset current range based on the multiple reference currents and store 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.

2. The TWS open-earphone wearing detection method according to claim 1, wherein: 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 across the first resistor is calculated based on the first voltage signal and the second voltage signal, and the first current is calculated based on the voltage drop and a preset first resistance value corresponding to the first resistor.

3. The TWS open-earphone wearing detection method according to claim 2, wherein: In the fixed portion, the input end of the switch circuit is connected to the first power supply end, 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 of determining the first current flowing through the current detection circuit according to the current detection signal when the Bluetooth communication module establishes a communication connection with the external terminal includes: Step S310: When the Bluetooth communication module establishes a communication connection with the external terminal, control 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 determine the first current flowing through the current detection circuit according to the current detection signal.

4. The TWS open-earphone wearing detection method according to claim 3, wherein: The step S310 includes: Step S311: Controlling the switch circuit to be in an open state within a preset first duration after the Bluetooth communication module switches from not establishing a communication connection to establishing a communication connection with the external terminal; and after the preset first duration, controlling the switch circuit to be in a closed state to conduct a path between the first power supply terminal and the current-limiting resistor, and determining the first current flowing through the current detection circuit based on 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 the state for a preset third duration; and when the switch circuit is in the 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-earphone wearing detection method according to claim 4, wherein: 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 communication connection reaches a preset second duration, obtaining the playback status of the TWS open-ear headset; Step S3122: When the sound output portion of the TWS open-earphone outputs an audio signal, control the switch circuit to switch from an open state to a closed state at intervals of a preset fourth duration and maintain the closed state for a preset third duration; and when the switch circuit is in the closed state, determine 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-earphone wearing detection method according to claim 1, wherein: 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.

7. A control device, characterized in that: The control device includes: a memory, a processor, and a TWS open-earphone wearing detection program stored in the memory and runnable on the processor, wherein the TWS open-earphone wearing detection program is configured to implement the TWS open-earphone wearing detection method according to any one of claims 1 to 6 above.

8. A TWS open-ear headset, characterized in that: The TWS open-ear headphones include TWS earphones and the control device according to claim 7; The TWS ear-hook earphone has an earphone body, a Bluetooth communication module is provided 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-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; A first electrode is provided on the sound emitting portion, and a second electrode is provided on the fixing portion. When the sound emitting portion and the fixing 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 earphones, 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 provided 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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