CN114157947A

CN114157947A - Wireless earphone and abnormality detection method

Info

Publication number: CN114157947A
Application number: CN202011020266.4A
Authority: CN
Inventors: 郎秋生; 梅宏琛; 刘新宇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-24
Publication date: 2022-03-08

Abstract

The application provides a wireless headset and a method of anomaly detection. The method comprises the following steps: the method comprises the steps of firstly obtaining a first voltage value, detecting a second voltage value and a charging current value when the wireless earphone is charged through a charging box, then determining the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value, and finally determining whether the wireless earphone and the charging box are abnormally contacted or not according to the contact resistance. The first voltage value is a voltage value output by the charging box when the charging box charges the wireless earphone; the second voltage value is the voltage value of the input end of the charging module of the wireless earphone when the wireless earphone is charged through the charging box. This application has realized wireless earphone and has charged the unusual detection of box contact.

Description

Wireless earphone and abnormality detection method

The present application claims priority of chinese patent application having application number 202010930865.3 entitled "an earphone and charging box contact anomaly detection and warning system" filed in the chinese patent office on 7/9/2020, which is incorporated herein by reference in its entirety.

Technical Field

The application relates to the technical field of earphones, in particular to a wireless earphone and an abnormality detection method.

Background

With the development of TWS (True Wireless Stereo) technology, it has been widely used in the field of earphones, and therefore Wireless earphones using TWS technology have been produced.

At present, the wireless earphone adopting the TWS technology is connected with the charging box by means of a metal PIN, an elastic sheet or a POGO PIN and the like to form physical connection, so that a charging path and a communication path between the wireless earphone and the charging box are formed, the wireless earphone is charged through the charging path, and communication between the wireless earphone and the charging box is realized through the communication path.

The wireless earphone contacts with a human body in the using process, and foreign matters such as grease and sweat secreted by the human body are attached to the contact points of the wireless earphone. During use of the charging box, foreign matter such as dust may adhere to the contact points. The presence of the foreign matter may cause contact abnormality between the wireless headset and the charging box.

Disclosure of Invention

The technical scheme of the application provides a wireless earphone, a charging box, a user terminal and an abnormity detection method, and is used for solving the problem of how to determine whether the wireless earphone and the charging box are in abnormal contact.

In a first aspect, a technical solution of the present application provides an anomaly detection method applied to a wireless headset, including: obtaining a first voltage value, wherein the first voltage value is a voltage value output by a charging box when the charging box charges the wireless earphone; detecting a second voltage value and a charging current value of the wireless earphone when the wireless earphone is charged through the charging box, wherein the second voltage value is the voltage value of the input end of the charging module of the wireless earphone when the wireless earphone is charged through the charging box; determining a contact resistance of the wireless headset with the charging box according to the first voltage value, the second voltage value and the charging current value; and determining whether the wireless earphone is abnormally contacted with the charging box according to the contact resistance.

Therefore, the contact condition of the wireless earphone and the charging box can be detected by calculating the contact resistance between the wireless earphone and the charging box and determining whether the wireless earphone and the charging box are abnormal or not according to the contact resistance. In addition, the method for detecting the abnormity is also provided, and the detection method is simple in steps and easy to execute.

In one implementation, the determining the contact resistance of the wireless headset with the charging box according to the first voltage value, the second voltage value and the charging current value includes: judging whether the wireless earphone is in a constant current charging stage or not according to the charging current value; if yes, determining the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value.

In one implementation, the determining whether the wireless headset and the charging box are abnormally contacted according to the contact resistance includes: judging whether the contact resistance is larger than a resistance threshold value; if so, determining that the wireless earphone is abnormally contacted with the charging box.

In one implementation, the first voltage value is a fixed voltage value.

In one implementation, the first voltage value is determined according to a voltage value of a battery of the wireless headset and a preset voltage value; the method further comprises the following steps: detecting a voltage value of a battery of the wireless headset; and determining the first voltage value according to the battery and the voltage value of the wireless earphone and the preset voltage value.

In one implementation, the method further comprises: if the wireless earphone is abnormally contacted with the charging box, sending contact abnormal indication information to a user terminal connected with the wireless earphone; the contact abnormity indication information is used for indicating that the wireless earphone is abnormally contacted with the charging box.

By sending the contact abnormity indication information, for example, when the wireless earphone is abnormally contacted with the charging box, the abnormal contact condition is fed back to the user, so that the user can quickly respond, and the contact condition of the wireless earphone and the charging box is improved.

In a second aspect, the present application provides an anomaly detection method applied to a charging box, including: outputting a voltage with a first voltage value to enable the wireless earphone to determine whether the wireless earphone is abnormally contacted with the charging box according to the first voltage value; the first voltage value is a voltage value output by the charging box when the charging box charges the wireless earphone.

In one implementation, the first voltage value is a fixed voltage value.

In one implementation, the first voltage value is determined according to a voltage value of a battery in the wireless headset and a preset voltage value; the method further comprises the following steps: and obtaining the first voltage value before the voltage with the output value as the first voltage value.

In a third aspect, a technical solution of the present application provides a method for anomaly detection, which is applied to a user terminal, and includes: receiving contact abnormity indication information sent by a wireless earphone, wherein the contact abnormity indication information is used for indicating that the wireless earphone is abnormally contacted with the charging box; providing contact cleaning prompt information, wherein the contact cleaning prompt information is used for prompting a user to clean the contact of the wireless earphone and/or the contact of the charging box.

It can be seen that through providing contact clearance prompt message to when wireless earphone and the contact of the box that charges were unusual, remind the user to clear up the contact of wireless earphone and/or the contact of the box that charges, thereby improve the contact situation of wireless earphone and the box that charges, and then avoid appearing charging the box and charge for wireless earphone slowly, the box that charges to wireless earphone, the box that charges is uncapped the back earphone and can't return the trouble such as connecting.

In a fourth aspect, the present technical solution provides a wireless headset, including: the charging module is used for charging a battery of the wireless earphone according to the voltage of the input end of the charging module when the wireless earphone is charged through the charging box; the detection module is used for detecting the charging current value of the wireless earphone when the wireless earphone is charged through the charging box; the first control module is used for obtaining a second voltage value, the charging current value and a first voltage value, determining the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value, and determining whether the wireless earphone and the charging box are abnormally contacted according to the contact resistance; the second voltage value is the voltage value of the input end of the charging module of the wireless earphone when the wireless earphone is charged through the charging box, and the first voltage value is the voltage value output by the charging box when the charging box charges the wireless earphone.

It can be seen that the wireless earphone realizes the detection of the contact condition of the wireless earphone and the charging box by measuring the contact resistance and determining whether the wireless earphone and the charging box are in abnormal contact or not according to the contact resistance. In addition, a manner capable of determining whether the wireless headset and the charging box are in contact abnormality is also provided.

In one implementation, the first control module obtains the second voltage value by: detecting a voltage value of an input end of the charging module to obtain the second voltage value; or detecting the voltage value of the input end of the charging module through a peripheral voltage detection module to obtain the second voltage value, wherein the peripheral voltage detection module is connected with the input end of the charging module.

In one implementation manner, the detection module is further configured to detect a voltage value at an input end of the charging module to obtain the second voltage value; the first control module obtains the second voltage value from the detection module.

In one implementation, the first voltage value is a fixed voltage value.

In one implementation, the first voltage value is determined according to a voltage value of a battery of the wireless headset and a preset voltage value; the detection module is further used for detecting the voltage value of a battery of the wireless earphone; the first control module is further configured to obtain a voltage value of a battery of the wireless headset, and determine the first voltage value according to the voltage value of the battery of the wireless headset and the preset voltage value.

In one implementation, with the charging box connected to the wireless headset, the voltage output module of the charging box is connected to the charging module to form a charging path between the wireless headset and the charging box; the second control module of the charging box is connected with the first control module to form a communication path between the wireless headset and the charging box.

In one implementation, the first control module determines the contact resistance according to the following equation:

wherein R is_jIs the contact resistance, V_outIs the first voltage value, V_inAnd I is the second voltage value and the charging current value.

In one implementation, the wireless headset further includes a first charging communication switching module, wherein: the first charging communication switching module is connected with the charging module and the first control module; under the condition that the charging box is connected with the wireless earphone, the first charging communication switching module is connected with a second charging communication switching module of the charging box to form a charging communication path between the wireless earphone and the charging box, the state of the charging communication path is a charging state or a communication state, and the second charging communication switching module is connected with a voltage output module and a second control module of the charging box; the first charging communication switching module is used for switching the state of the charging communication channel between the charging state and the communication state.

wherein R is_jIs the contact resistance, V_outIs the first voltage value, V_inIs the second voltage value, I is the charging current value, R_q1Resistance, R, of the first charging communication switching module_q2And the resistor of the second charging communication switching module is used.

In one implementation, the first control module determines whether the wireless headset and the charging box are in abnormal contact by: judging whether the contact resistance is larger than a resistance threshold value; if so, determining that the wireless earphone is abnormally contacted with the charging box.

In one implementation manner, the first control module is further configured to send contact abnormality indication information to a user terminal connected to the wireless headset if the wireless headset is in abnormal contact with the charging box; the contact abnormity indication information is used for indicating that the wireless earphone is abnormally contacted with the charging box.

In one implementation, the first control module determines the contact resistance by: judging whether the wireless earphone is in a constant current charging stage or not according to the charging current value; if yes, determining the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value.

In a fifth aspect, the present technical solution provides a charging box, including: the voltage output module is used for outputting voltage with a first voltage value when the charging box charges the wireless earphone, so that the wireless earphone determines whether the wireless earphone is abnormally contacted with the charging box according to the first voltage value; the second control module is connected with the voltage output module.

In one implementation, the first voltage value is a fixed voltage value.

In one implementation, the first voltage value is determined according to a voltage value of a battery of the wireless headset and a preset voltage value; the second control module is used for obtaining the first voltage value and setting the first voltage value to the voltage output module so as to enable the voltage output module to output voltage with a value of the first voltage value.

In one implementation, the voltage output module is connected with a charging module of the wireless headset to form a charging path between the wireless headset and the charging box under the condition that the charging box is connected with the wireless headset; the second control module is connected with the first control module of the wireless headset to form a communication path between the wireless headset and the charging box.

In one implementation, the charging box further includes a second charging communication switching module, wherein: the second charging communication switching module is connected with the voltage output module and the second control module; under the condition that the charging box is connected with the wireless earphone, the second charging communication switching module is connected with a first charging communication switching module of the wireless earphone to form a charging communication path between the wireless earphone and the charging box, the state of the charging communication path is a charging state or a communication state, and the first charging communication switching module is connected with the charging module and a first control module of the wireless earphone; and the second charging communication switching module is used for switching the state of the charging communication channel between the charging state and the communication state.

In a sixth aspect, a user terminal comprises: the communication module is used for communicating with other equipment; one or more memories for storing one or more computer programs; one or more processors configured to execute the one or more computer programs to cause the terminal device to perform the method of the third aspect.

Drawings

Fig. 1 is a schematic view of an application scenario of an anomaly detection method according to an embodiment of the present application;

fig. 2 is a schematic flowchart of an anomaly detection method according to an embodiment of the present application;

fig. 3 is a schematic diagram of contact cleaning prompt information provided in an embodiment of the present application;

fig. 4 is a first schematic structural diagram of a wireless headset according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a wireless headset according to an embodiment of the present application;

fig. 6 is a first schematic structural diagram of a charging box provided in an embodiment of the present application;

fig. 7 is a schematic diagram illustrating a state after the charging box in fig. 6 is connected with the wireless headset in fig. 4;

fig. 8 is a schematic diagram illustrating a state in which the charging box in fig. 6 is connected to the wireless headset in fig. 5;

fig. 9 is a schematic structural diagram of a wireless headset according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a wireless headset according to an embodiment of the present application;

fig. 11 is a second structural schematic diagram of a charging box provided in the embodiment of the present application;

fig. 12 is a schematic diagram illustrating a state in which the charging box in fig. 11 is connected to the wireless headset in fig. 10.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description examples and claims of this application and in the drawings are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, nor order. Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such as a list of steps or elements. A method, system, article, or apparatus is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, system, article, or apparatus.

It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The wireless earphone contacts with a human body in the using process, and foreign matters such as grease and sweat secreted by the human body are attached to the contact of the wireless earphone, which is difficult to avoid. During use of the charging box, foreign matter such as dust may adhere to the contacts in the charging box. Since the contact resistance between the charging case and the wireless headset may become large due to the presence of such foreign substances, it is possible to determine whether the wireless headset and the charging case are abnormally contacted by measuring the contact resistance between the charging case and the wireless headset and based on the contact resistance.

The embodiment of the application provides an abnormity detection method which can determine whether the charging box and the wireless earphone are abnormally contacted.

An application scenario of the abnormality detection method is explained.

Fig. 1 is a schematic view of an application scenario of the anomaly detection method according to the embodiment of the present application, and as shown in fig. 1, the anomaly detection method includes a charging box, a wireless headset, and a user terminal. Wherein:

the wireless headset may be a wireless headset employing TWS technology that includes two earplugs, e.g., a left ear earpiece and a right ear earpiece.

After the wireless earphone is placed in the charging box, the contact of the wireless earphone is connected with the contact of the charging box to form a charging path between the wireless earphone and the charging box. Thus, the charging box can charge the wireless earphone through the charging path. In addition, in the case where the contact of the wireless headset and the contact of the charging box are connected, a communication path may be formed between the wireless headset and the charging box, so that the charging box and the wireless headset communicate through the communication path.

The user terminal includes, but is not limited to, a mobile phone, a notebook computer, an e-reader, a tablet computer, etc.

The wireless earphone can be connected with the user terminal by adopting wireless communication technology such as Bluetooth and the like, so that a wireless communication link can be formed between the wireless earphone and the user terminal, and the wireless earphone and the user terminal can communicate through the wireless communication link. For example, the wireless headset receives audio data transmitted by the user terminal through the wireless communication link to play the audio data.

Based on the application scenario, when the charging box charges the wireless earphone, the wireless earphone determines the contact resistance Rj of the charging box and the wireless earphone, and can determine whether the charging box and the wireless earphone are abnormal in contact or not according to the contact resistance Rj.

In one implementation, if the charging box is in contact with the wireless headset abnormally, the wireless headset may further send contact abnormality indication information to the user terminal, where the contact abnormality indication information may be used to indicate that the wireless headset is in contact with the charging box abnormally.

The user terminal receives the contact abnormity indication information and can provide contact cleaning prompt information on the user terminal. Wherein, contact clearance prompt message can indicate the user to clear the contact. For example cleaning the contacts of the wireless headset and/or the contacts of the charging box. In this way, the user can clean the contact of the wireless headset and/or the contact of the charging box, thereby improving the contact condition of the wireless headset and the charging box.

The abnormality detection method will be explained. The abnormity detection method is operated on the premise that after the wireless earphone is placed in the charging box, the contact of the wireless earphone is connected with the contact of the charging box.

Fig. 2 is a schematic flowchart of an anomaly detection method according to an embodiment of the present application, and as shown in fig. 2, the method includes:

201. the charging box outputs voltage with a first voltage value to charge the wireless earphone, wherein the first voltage value is the voltage value output by the charging box when the charging box charges the wireless earphone.

In one implementation, the voltage value output by the charging box is the output voltage value of the voltage output module in the charging box, i.e., the first voltage value is the output voltage value of the voltage output module in the charging box.

The charging mode of the charging box for charging the wireless earphone can comprise the following two modes:

first, the wireless headset is charged with a constant output voltage, i.e., the first voltage value is a fixed voltage value.

Second, the wireless headset is charged with an adjustable output voltage, e.g., the first voltage value changes following a change in the voltage value of the battery of the wireless headset. Specifically, the first voltage value is determined according to a voltage value of a battery of the wireless headset and a preset voltage value, wherein the preset voltage value is related to system settings of the wireless headset and/or the charging box. For example, the preset voltage value is a value predefined according to the system setting. In one implementation, the first voltage value is equal to a sum of a voltage value of a battery of the wireless headset and a preset voltage value.

In the case of the second charging method, the first voltage value is obtained before the charging box outputs the voltage having the first voltage value.

The manner of obtaining the first voltage value may include the following two:

the first method comprises the following steps: the wireless headset detects a voltage value of a battery of the wireless headset, determines a first voltage value according to the battery and the voltage value of the wireless headset and a preset voltage value, and requests the charging box to provide a voltage with a value of the first voltage value. The charging box acquires a first voltage value according to the request.

Second, the wireless headset detects a voltage value of a battery of the wireless headset. The charging box obtains a voltage value of a battery of the wireless earphone from the wireless earphone, and determines a first voltage value according to the voltage value of the battery of the wireless earphone and a preset voltage value.

It should be noted that, since the preset voltage value is preset, specific values of the preset voltage value can be stored in advance in the wireless headset and the charging box, so as to facilitate subsequent calculation.

202. The wireless headset obtains a first voltage value.

In one implementation, a wireless headset obtains a first voltage value from a charging box.

In another implementation manner, if the first voltage value is a fixed voltage value, the wireless headset may store the first voltage value in advance. In this way, the wireless headset may obtain the first voltage value from the previously saved data. If the first voltage value is determined according to the voltage value of the battery of the wireless earphone and the preset voltage value, and the preset voltage value is stored in the wireless earphone in advance, the wireless earphone determines the first voltage value according to the preset voltage value stored in advance and the voltage value of the battery of the wireless earphone measured by the wireless earphone.

203. The wireless earphone detects a second voltage value and a charging current when the wireless earphone is charged through the charging box, wherein the second voltage value is the voltage value of the input end of the charging module in the wireless earphone when the wireless earphone is charged through the charging box.

The charging module in the wireless earphone can be used for charging the battery of the wireless earphone according to the voltage of the input end of the charging module when the wireless earphone is charged through the charging box.

It should be noted that, because the contact resistance exists between the charging box and the wireless headset and the charging module of the wireless headset and/or the voltage output module of the charging box may include other functional modules before, the voltage value (e.g., the second voltage value) at the input terminal of the charging module is not equal to the voltage value (e.g., the first voltage value) output by the charging box.

204. The wireless earphone determines the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value.

The manner of determining the contact resistance according to the first voltage value, the second voltage value, and the charging current value is related to the internal structure of the wireless headset and the internal structure of the charging box, and therefore, the specific manner of determining the contact resistance according to the first voltage value, the second voltage value, and the charging current value will be described in the following description of the structure of the wireless headset and the structure of the charging box, and will not be described herein again.

205. The wireless earphone determines whether the wireless earphone is abnormally contacted with the charging box according to the contact resistance.

Since the foreign matter can cause the contact resistance between the wireless earphone and the charging box to become large, the contact resistance measured under the condition that no foreign matter exists on the contact of the wireless earphone and the contact of the charging box can be used as a resistance threshold value, and the resistance threshold value is used as a comparison reference to determine whether the wireless earphone and the charging box are abnormally contacted or not.

Based on this, the manner of determining whether the wireless headset and the charging box are in abnormal contact may be, for example: and judging whether the contact resistance is larger than a resistance threshold value. If yes, determining that the wireless earphone is abnormally contacted with the charging box. If not, the wireless earphone is determined to be normally contacted with the charging box.

Therefore, the contact condition of the wireless earphone and the charging box can be detected by calculating the contact resistance between the wireless earphone and the charging box and determining whether the contact between the wireless earphone and the charging box is abnormal or not according to the contact resistance. In addition, a method of anomaly detection is also provided. In addition, the detection method has simple steps and is easy to execute.

When the wireless earphone is abnormally contacted with the charging box, the abnormal contact condition is fed back to a user, so that the user can quickly respond, and the contact condition of the wireless earphone and the charging box is improved. The abnormality detection method may further include:

206. and if the wireless earphone is abnormally contacted with the charging box, the wireless earphone sends contact abnormal indication information to a user terminal connected with the wireless earphone. The contact abnormity indication information is used for indicating that the wireless earphone is abnormally contacted with the charging box.

It should be noted that, the connection mode of the wireless headset and the user terminal may be wireless connection.

207. And the user terminal receives the contact abnormity indication information and provides contact cleaning prompt information.

The contact cleaning prompt message may be used to prompt a user to clean the contacts of the wireless headset and/or the contacts of the charging box.

The manner of providing the contact cleaning prompting message may include the following two ways:

first, the contact cleaning prompt message is a bullet frame. Wherein, the bullet frame is displayed with characters or pictures or animations and the like which prompt the user to clean the contact of the wireless earphone and/or the contact of the charging box. For example, as shown in fig. 3, the user terminal displays a pop-up box in its interactive interface, and the pop-up box displays "please clean the contacts of the wireless headset and/or the contacts of the charging box".

It should be noted that a closing control may also be displayed in the pop-up box, so that the user closes the pop-up box by clicking the closing control. Or a confirmation control can be displayed in the bullet box so that the user informs the user terminal that the contact points of the wireless earphone and/or the contact points of the charging box are known to be cleaned and the bullet box is closed by clicking the confirmation control. As shown in FIG. 3, the confirmation control may be a control that displays a typeface of "I know". In other implementation manners of the present application, after the user clicks the confirmation control, a schematic step diagram of cleaning the contact points of the wireless headset and the contact points of the charging box may be further displayed, so that the user can clean the contact points of the wireless headset and/or the contact points of the charging box based on the schematic step diagram.

And secondly, the contact cleaning prompt message is a voice prompt message for prompting a user to clean the contact of the wireless earphone and/or the contact of the charging box. Therefore, the user terminal receives the indication information of the contact abnormity and plays the voice prompt information, so that the user can clean the contact of the wireless earphone and/or the contact of the charging box after hearing the voice prompt information. The number of times the voice prompt message is played may be at least one. In addition, the user can close the playing of the voice prompt message by triggering a screen locking key and other physical controls on the user terminal.

It should be noted that the manner for providing the contact cleaning prompt message is only exemplary and is not intended to limit the present application. For example, on the basis of the two modes, a vibration function of the user terminal can be added or flash of a flash of the user terminal can be controlled.

By last, through providing contact clearance prompt message to when wireless earphone and the contact of the box that charges are unusual, remind the user to clear up the contact of wireless earphone and/or the contact of the box that charges, thereby improve the contact situation of wireless earphone and the box that charges, and then avoid appearing charging the box and charge slowly for wireless earphone, the box that charges can't charge to wireless earphone, the box that charges is uncapped the back earphone and is unable to return troubles such as link.

It should be noted that there is no restriction on the order between the above steps 202 and 203, for example, step 203 may be completed before step 202, or may be completed after step 202, or may be completed simultaneously.

The abnormality detection method may be performed at any time when the wireless headset is charged through the charging box, or may be performed only in a constant current charging stage when the wireless headset is charged through the charging box.

In one implementation, if the above-mentioned abnormality detection method is performed in the constant current charging stage, before determining the contact resistance between the wireless headset and the charging box according to the first voltage value, the second voltage value, and the charging current value, it is necessary to determine whether the wireless headset is in the constant current charging stage according to the charging current value. If yes, determining the contact resistance of the wireless earphone and the charging box. If not, continuing to execute the steps 202 and 203 and judging whether the wireless earphone is in the constant current charging stage or not until the wireless earphone is determined to be in the constant current charging stage.

The principle of judging whether the wireless earphone is in the constant current charging stage according to the charging current value is as follows:

after the internal structure of the wireless earphone is determined, the charging current value of the wireless earphone in the constant current charging stage can be measured, so that the charging current can be used as a current threshold value, the charging current value is compared with the current threshold value, and if the charging current value is basically equivalent to the current threshold value, the wireless earphone is determined to be in the constant current charging stage.

In another implementation manner, if the above-mentioned abnormality detection method is performed in the constant current charging stage, before step 202 is performed, the wireless headset detects a charging current value of the wireless headset when the wireless headset is charged through the charging box at a preset frequency to obtain a plurality of charging current values, and determines whether the wireless headset is in the constant current charging stage according to the plurality of charging current values. For example, if the plurality of charging current values are the same, or the difference between any two charging current values in the plurality of charging current values is smaller than a preset error value, it is determined that the wireless headset is in the constant current charging stage. The preset frequency and the preset error value are determined according to system settings.

Based on this, if it is determined that the wireless headset is in the constant current charging phase, 202 and the following steps may be performed. If the wireless earphone is determined not to be in the constant current charging stage, the wireless earphone can continue to detect the charging current value of the wireless earphone, and whether the wireless earphone is in the constant current charging stage or not is judged according to the charging current value.

It should be noted that the above manner for determining whether the wireless headset is in the constant current charging phase is only exemplary and is not used to limit the present application.

The wireless headset and the charging box will be explained below. Because wireless earphone and the box that charges are the corollary product, consequently wireless earphone and the inner structure of the box that charges are the integrated design too. Next, the internal structure of the wireless headset and the charging box will be explained from the following two implementations. Wherein,

the first implementation scheme is as follows: under the condition that the charging box is connected with the wireless earphone, the voltage output module of the charging box is connected with the charging module of the wireless earphone to form a charging path, and the second control module of the charging box is connected with the first control module of the wireless earphone to form a communication path, wherein the charging path and the communication path can be mutually independent. In other words, in case that the charging box is connected with the wireless headset, the output voltage module of the charging box is directly connected with the charging module of the wireless headset. The second control module of the charging box is directly connected with the first control module of the wireless earphone.

Under this scheme, the wireless headset may include: module, detection module, the first control module charges, wherein:

in a first implementation: the charging module is used for charging the battery of the wireless earphone according to the voltage of the input end of the charging module when the wireless earphone is charged through the charging box. The charging path is a charging path, for example, a charging box charges a battery of the wireless headset through the charging path.

The detection module is used for detecting the charging current value of the wireless earphone when the wireless earphone is charged through the charging box. The detection module includes, but is not limited to, a current meter or a voltage meter. If the detection module is a voltage measuring instrument, the charging current value can be calculated by measuring the voltage value and combining the measured voltage value with the resistor.

The first control module is used for obtaining a first voltage value, a second voltage value and a charging current value, and determining the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value. In this way, the wireless headset (e.g., the first control module) can determine whether the wireless headset and the charging box are abnormally contacted according to the contact resistance. The second voltage value is the voltage value of the input end of the charging module when the wireless earphone is charged through the charging box, and the first voltage value is the voltage value output by the charging box when the charging box charges the wireless earphone. In a first implementation, the voltage value output by the charging box is the voltage value output by the voltage output module of the charging box.

The first control module includes, but is not limited to, a microprocessor, a Micro Control Unit (MCU), and a bluetooth chip.

The manner in which the first control module obtains the first voltage value may include the following two:

first, a first control module is obtained from the charging box through a communication path.

Second, if the first voltage value is a fixed voltage value and the wireless headset stores the first voltage value in advance, the first control module can directly obtain the first voltage value from the data stored in advance. If the first voltage value is determined according to the voltage value of the battery of the wireless earphone and the preset voltage value, and the preset voltage value is stored in the wireless earphone in advance, the first control module determines the first voltage value according to the preset voltage value stored in advance and the voltage value of the battery of the wireless earphone. The voltage value of the battery of the wireless headset may be detected by the first control module or the measurement module.

The manner in which the first control module obtains the second voltage value includes the following two:

the first method comprises the following steps: if the first control module has the function of detecting the voltage value, the first control module detects the voltage value of the input end of the charging module, and a second voltage value can be obtained.

Secondly, if the first control module does not have the function of detecting the voltage value, the first control module may detect the voltage value of the input terminal of the charging module through an external voltage detection module to obtain a second voltage value. The peripheral voltage detection module can be connected with the input end of the charging module. The peripheral voltage detection module includes, but is not limited to, a voltage division module.

The first control module obtains the charging current value from the detection module.

It should be noted that the charging module and the detecting module may be integrated together or may be separately disposed, and are not particularly limited herein. The principle of determining the contact resistance will be explained hereinafter, and thus will not be described in detail here. The principle of determining whether the charging box and the wireless headset are in contact abnormality according to the contact resistance has been described above, and thus, it is not described herein again.

Fig. 4 is a schematic structural diagram of a wireless headset according to an embodiment of the present invention, as shown in fig. 4, the wireless headset 400 includes: the charging module 401, the detection module 402, the first control module 403, the battery Bat, the resistor R1, and the voltage dividing module 404. Wherein:

the input end of the charging module 401 is used for forming a charging path with the charging box during charging. The output of the charging module 401 is connected to a resistor R1. The detection module 402 is connected across a resistor R1. The first control module 403 is connected to the detection module 402, the charging module 401 and the voltage dividing module 404. The first control module 401 is also used to form a communication path with the charging box during charging. The voltage dividing module 404 includes a resistor R2 and a resistor R3, one end of the resistor R2 is connected to the input end of the charging module 401, the other end of the resistor R2 is connected to one end of the resistor R3, the other end of the resistor R2 is further connected to the first control module 403, and the other end of the resistor R3 is grounded.

In a second implementation, the respective modules of the wireless headset differ from those in the first implementation above in that: the detection module is further used for detecting the voltage value of the input end of the charging module to obtain a second voltage value. The first control module obtains the second voltage value by obtaining the second voltage value from the detection module. In other words, the detection of the charging current value and the second voltage value is performed by the detection module, and the first control module obtains the charging current value and the second voltage value from the detection module.

Fig. 5 is a schematic structural diagram of a wireless headset according to an embodiment of the present application, and as shown in fig. 5, the wireless headset 400 includes: a charging module 401, a detection module 402, a first control module 403, and a battery Bat. Wherein:

the detection module 402 and the charging module 401 are integrated. Here, the integrated body of the detection module 402 and the charging module 401 is named a detection charging module 405. The detection charging module 405 is used for being connected with a charging box to form a charging path in a charging stage, and the detection charging module 405 is also connected with the battery Bat. The first control module 403 is connected to the detection charging module 402. The first control module 403 is also used to connect with the charging box during charging to form a communication path.

The charging box includes two charging modes for charging the wireless headset, and since the two charging modes have been described above, they are not described herein again. It should be noted that, if the charging box charges the wireless headset by using the adjustable output voltage, for example, the first voltage value changes along with the change of the voltage value of the battery in the wireless headset (the first voltage value is determined by the voltage value of the battery in the wireless headset and a preset voltage value), in the two implementations, the detecting module is further configured to detect the voltage value of the battery in the wireless headset, the first control module is further configured to determine the first voltage value according to the battery of the wireless headset, the voltage value and the preset voltage value, and request the charging box to provide the voltage with the value of the first voltage value through the communication path; or the detection module detects the voltage value of the battery of the wireless earphone, the first control module obtains the voltage value of the battery of the wireless earphone from the detection module, so that the charging box obtains the voltage value of the battery of the wireless earphone from the first control module through the communication channel, and the first voltage value is determined according to the voltage value of the battery of the wireless earphone and the preset voltage value; or the first control module is also used for detecting the voltage value of the battery of the wireless earphone, determining the first voltage value according to the battery and the voltage value of the wireless earphone and the preset voltage value, and requesting the charging box to provide the voltage with the value of the first voltage value through the communication channel.

The charging box may include: the voltage output module and the second control module. Wherein: the voltage output module is used for outputting voltage with a value of a first voltage value when the charging box charges the wireless earphone, so that the wireless earphone can determine whether the wireless earphone and the charging box are abnormal in contact or not according to the first voltage value. The second control module is connected with the voltage output module. The second control module may include, but is not limited to, a bluetooth chip, a microprocessor, a micro control unit, and the like.

Fig. 6 is a schematic structural diagram of a charging box according to an embodiment of the present application, and as shown in fig. 6, the charging box 600 includes a voltage output module 601 and a second control module 602. Wherein:

the output end of the voltage output module 601 is used for being connected with the wireless headset to form a charging path in a charging stage. The voltage output module 601 is further connected to a power supply VDD, which is used for providing an input voltage to the voltage output module 601. The second control module 602 is used to connect with the wireless headset during the charging phase to form a communication path. The second control module 602 is also connected to the voltage output module 601.

The charging box may be used to charge the wireless headset in two ways, and if the wireless headset is charged with a constant output voltage, that is, the first voltage value is a fixed voltage value, the voltage output module may be, for example, a BOOST circuit.

If the wireless headset is charged with an adjustable output voltage, for example, the first voltage value changes along with a change of a voltage value of a battery of the wireless headset (for example, the first voltage value is determined according to the voltage value of the battery of the wireless headset and a preset voltage value), the voltage output module may use, for example, a BUCK-BOOST circuit. Based on this, the second control module is further configured to obtain the first voltage value, and set the first voltage value to the voltage output module, so that the voltage output module outputs a voltage having a value of the first voltage value, or the second control module is further configured to obtain a voltage value of a battery of the wireless headset, and determine the first voltage value according to the voltage value of the wireless headset and a preset voltage value, and set the first voltage value to the voltage output module, so that the voltage output module outputs a voltage having a value of the first voltage value.

On the basis, if the first charging mode is adopted, the first control module determines the contact resistance according to the following formula I:

wherein R is_jIs contact resistance, V_outIs a first voltage value, V_inI is the charging current value.

If the second charging mode is adopted, the first control module determines the contact resistance according to the following formula II:

wherein R is_jIs contact resistance, V_outIs a first voltage value, V_inIs a second voltage value, I is a charging current value, V_batIs the voltage of the battery, dV is a preset voltage, V_out＝V_bat+dV。

Next, the abnormality detection method will be described by taking as an example the charging box in fig. 6 and the wireless headset in fig. 4 connected together, and the charging method being the second charging method. Fig. 7 is a schematic diagram illustrating a state after the charging box in fig. 6 is connected with the wireless headset in fig. 4.

As can be seen from fig. 7, the voltage output module 601 is connected to the charging module 401 to form a charging path, and a contact resistance Rj exists at a connection point of the voltage output module 601 and the charging module 401. The first control module 402 is coupled to the second control module 602 to form a communication path.

The flow of the abnormality detection method may be, for example: the detection module 402 detects the voltage value of the battery Bat of the wireless headset; the first control module 403 obtains the voltage value of the battery Bat of the wireless headset from the detection module 402, determines the first voltage value according to the voltage value of the battery Bat of the wireless headset and a preset voltage value, and requests the voltage output module 601 to provide a voltage with a value of the first voltage value to the second control module 602; the second control module 602 sets the first voltage value to the voltage output module 601; the voltage output module 601 outputs a voltage with a first voltage value; the charging module 401 charges the battery through the resistor R1 based on the voltage at its output terminal; the detection module 402 detects the charging current; the first control module 403 detects the voltage at the input terminal of the charging module 401 through the resistors R2 and R3 to obtain a second voltage value; the first control module 403 obtains the charging current value from the detection module 402; the first control module 403 determines a contact resistance Rj according to the voltage value of the battery Bat of the wireless headset, the preset voltage value, the second voltage value and the charging current in combination with the formula two, and determines whether the charging box and the wireless headset are in abnormal contact or not according to the contact resistance Rj.

Next, the abnormality detection method will be described by taking as an example the charging box in fig. 6 and the wireless headset in fig. 5, and the charging method being the first charging method. Fig. 8 is a schematic diagram illustrating a state after the charging box in fig. 6 is connected to the wireless headset in fig. 5.

As can be seen from fig. 8, the voltage output module 601 is connected to the detection charging module 405 to form a charging path, and a contact resistance Rj exists at a connection point of the voltage output module 601 and the detection charging module 405. The first control module 601 is connected to the second control module 602 to form a communication path.

The flow of the abnormality detection method is as follows: the voltage output module 601 outputs a voltage with a first voltage value; the detection charging module 405 charges the battery; the detection charging module 405 detects a charging current value, and the detection charging module 405 also needs to detect a voltage at an input end of the detection charging module 405 to obtain a second voltage value; the first control module 403 obtains a first voltage value from the pre-stored data, and obtains a charging current value and a second voltage value from the detection charging module 405; the first control module 403 determines a contact resistance according to the first voltage value, the second voltage value and the charging current value in combination with the formula one, and determines whether the charging box and the wireless headset are abnormally contacted according to the contact resistance.

Since the charging module 401 and the detection module 402 in the wireless headset shown in fig. 5 are integrated together, and the integrated charging module 401 and detection module 402 are the detection charging module 405, the voltage at the input terminal of the detection charging module 405 is equal to the voltage at the input terminal of the charging module 401.

It should be noted that the above-mentioned structures of the wireless headset and the charging box are only exemplary and are not used to limit the embodiments of the present application.

The second implementation scheme is as follows: under the condition that the charging box and the wireless earphone are connected, a first charging communication switching module of the wireless earphone is connected with a second charging communication switching module of the charging box to form a charging communication path, the state of the charging communication path is a charging state or a communication state, the second charging communication switching module is connected with a voltage output module and a second control module of the charging box, and the first charging communication switching module is connected with the charging module and the first control module of the wireless earphone. The first charging communication switching module is used for switching the state of the charging communication path between a charging state and a communication state. The second charging communication switching module is also used for switching the state of the charging communication path between the charging state and the communication state.

As can be seen from the above, in the second implementation, with the charging box and the wireless headset connected, only one charging communication path is formed between the charging box and the wireless headset, for example, the communication path and the charging path share one path, and the state of the charging communication path is switched by the second charging communication switching module in the charging box and the first charging communication switching module in the wireless headset.

Compared with the first implementation scheme, the structure of the wireless headset formed in the second implementation scheme is different from that of the wireless headset formed in the first implementation scheme in that: the wireless headset further includes: the first charging communication switching module.

The first charging communication switching module is connected with a charging module and a first control module of the wireless headset, and the first charging communication switching module is used for switching the state of a charging communication path before the charging state and the communication state. It should be noted that the first control module is no longer directly connected to the charging box.

Fig. 9 is a schematic structural diagram of a wireless headset according to an embodiment of the present application, and as shown in fig. 9, the wireless headset 400 in fig. 9 differs from the wireless headset 400 in fig. 4 in that: also included is a first charging communication switching module 406, wherein:

the first charging communication switching module 406 is connected to the charging box in the charging stage to form a charging communication path. The first control module 403 is connected to the first charging communication switching module 406 to complete communication with the charging box through the charging communication path. The input terminal of the charging module 401 is connected to the first charging communication switching module 406 to complete charging through the charging communication path 406.

Fig. 10 is a schematic structural diagram of a wireless headset according to an embodiment of the present application, and as shown in fig. 10, the wireless headset 400 in fig. 10 differs from the wireless headset 400 in fig. 5 in that: also included is a first charging communication switching module 406, wherein:

the first charging communication switching module 406 is connected to the charging box in the charging stage to form a charging communication path. The first control module 403 is connected to the first charging communication switching module 406 to complete communication with the charging box through the charging communication path. The input terminal of the detection charging module 405 is connected to the first charging communication switching module 406 to complete charging through the charging communication path.

The charging box includes two charging modes for charging the wireless headset, and since the two charging modes have been described above, they are not described herein again. It should be noted that, if the charging box charges the wireless headset with an adjustable output voltage, for example, the first voltage value changes along with the change of the voltage value of the battery in the wireless headset (the first voltage value is determined according to the voltage value of the battery in the wireless headset and a preset voltage value), the detection module is further configured to detect the voltage value of the battery in the wireless headset, the first control module is further configured to determine the first voltage value according to the battery of the wireless headset, the voltage value and the preset voltage value, and request the charging box to provide a voltage with a value of the first voltage value through the charging communication path; or the detection module detects the voltage value of the battery of the wireless earphone, the first control module obtains the voltage value of the battery of the wireless earphone from the detection module, so that the charging box obtains the voltage value of the battery of the wireless earphone from the first control module through the charging communication channel, and the first voltage value is determined according to the voltage value of the wireless earphone and the preset voltage value; or the first control module is further used for detecting the voltage value of the battery of the wireless earphone, determining the first voltage value according to the battery and the voltage value of the wireless earphone and the preset voltage value, and requesting the charging box to provide the voltage with the value of the first voltage value through the charging communication channel.

Compared with the first implementation scheme, the difference between the structure of the charging box formed in the second implementation scheme and the structure of the charging box formed in the first implementation scheme is as follows: the charging box further includes: and the second charging communication switching module.

The second charging communication switching module is connected with the voltage output module and the second control module. The second charging communication switching module is used for switching the state of the charging communication path between the charging state and the communication state. It should be noted that the second control module is no longer directly connected to the wireless headset.

Fig. 11 is a schematic structural diagram of a charging box according to an embodiment of the present application, and as shown in fig. 11, a difference between the charging box 600 in fig. 11 and the charging box 600 in fig. 6 is: also included is a second charging communication switching module 603, wherein:

the second charging communication switching module 603 is connected to the wireless headset during the charging phase to form a charging communication path. The second control module 602 is connected to the second charging communication switching module 603, so as to complete communication with the wireless headset through the charging communication path. The output end of the voltage output module 601 is connected to the second charging communication switching module 603, so as to complete charging through the charging communication path.

The charging method of the charging box for charging the wireless headset includes two methods, and since the charging method has been described above, the detailed description thereof is omitted.

On the basis, if the first charging mode is adopted, the first control module determines the contact resistance according to the following formula three:

wherein R is_jIs contact resistance, V_outIs a first voltage value, V_inIs a second voltage value, I is a charging current value, R_q1Switching the resistance, R, of a module for first charging communication in a wireless headset_q2The resistance of the module is switched for the second charging communication in the charging box.

If the second charging mode is adopted, the first control module determines the contact resistance according to the following formula four:

wherein R is_jIs contact resistance, V_outIs a first voltage value, V_inIn order to be the second voltage value, the voltage value is,i is a charging current value, R_q1Switching the resistance, R, of a module for first charging communication in a wireless headset_q2Switching the resistance of the module for the second charging communication in the charging box, V_batIs the voltage of the battery, dV is a preset voltage, V_out＝V_bat+dV。

Next, the abnormality detection method will be described by taking as an example the charging box in fig. 11 and the wireless headset in fig. 10 connected to each other, and the charging method being the first charging method. Fig. 12 is a schematic diagram illustrating a state in which the charging box in fig. 11 is connected to the wireless headset in fig. 10.

As can be seen from fig. 12, the first charging communication switching module 406 is connected to the second charging communication switching module 603 to form a charging communication path, and a contact resistance Rj exists at a connection point of the first charging communication switching module 406 and the second charging communication switching module 603.

The flow of the abnormality detection method is as follows: the voltage output module 601 outputs a voltage with a first voltage value, and applies the voltage to the input end of the detection charging module 405 through the second charging communication switching module 603 and the first charging communication switching module 403; the detection charging module 405 charges the battery Bat; the detection charging module 405 detects a charging current value, and the detection charging module 405 also needs to detect a voltage at an input end of the detection charging module 405 to obtain a second voltage value; the first control module 403 obtains a first voltage value from the pre-stored data, and obtains a charging current value and a second voltage value from the detection charging module 405; the first control module 403 determines the contact resistance Rj according to the first voltage value, the second voltage value and the charging current value in combination with the formula three, and determines whether the charging box and the wireless headset are abnormally contacted according to the contact resistance Rj.

It should be noted that the above-mentioned structure of the wireless headset and the charging box is only exemplary and is not used to limit the present application.

Therefore, the wireless earphone and the charging box are simple in structure, the contact resistance is measured, whether the wireless earphone and the charging box are abnormal in contact or not is determined according to the contact resistance, the contact condition of the wireless earphone and the charging box is detected, meanwhile, a mode capable of determining whether the wireless earphone and the charging box are abnormal in contact or not is provided, and the determination steps are simple and easy to implement.

In one implementation mode, when the contact between the wireless earphone and the charging box is abnormal, the abnormal contact condition is fed back to a user, so that the user can respond quickly, and the contact condition between the wireless earphone and the charging box is improved. When a first control module in the wireless earphone determines that the wireless earphone is abnormally contacted with a charging box, the first control module sends contact abnormity indication information to a user terminal connected with the wireless earphone. Wherein, the abnormal contact indication information is used for indicating that the wireless earphone is abnormal in contact with the charging box.

In one implementation, the first control module may further determine the contact resistance by:

judging whether the wireless earphone is in a constant current charging stage or not according to the charging current value; if yes, determining the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value.

Since the principle of the above steps has been explained above, it is not described herein again.

It should be noted that the method for determining the contact resistance, the structure of the wireless headset, and the structure of the charging box are only exemplary and are not intended to limit the present application.

Embodiments of the present application also provide a user terminal that includes a communication module, one or more memories, and one or more processors. Wherein:

the communication module is used to communicate with other devices (e.g., wireless headsets). One or more memories for storing one or more computer programs. One or more processors configured to execute one or more computer programs to cause a terminal device to perform the method of:

receiving contact abnormity indication information sent by the wireless earphone, wherein the contact abnormity indication information is used for indicating that the wireless earphone is abnormally contacted with the charging box; and providing a contact cleaning prompt message, wherein the contact cleaning prompt message is used for instructing a user to clean the contact of the wireless earphone and/or the contact of the charging box.

Since the principle of this step and the resulting effect have been explained above, they are not described in detail here.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for anomaly detection is applied to a wireless headset, and is characterized by comprising the following steps:

obtaining a first voltage value, wherein the first voltage value is a voltage value output by a charging box when the charging box charges the wireless earphone;

detecting a second voltage value and a charging current value of the wireless earphone when the wireless earphone is charged through the charging box, wherein the second voltage value is the voltage value of the input end of the charging module of the wireless earphone when the wireless earphone is charged through the charging box;

determining a contact resistance of the wireless headset with the charging box according to the first voltage value, the second voltage value and the charging current value;

and determining whether the wireless earphone is abnormally contacted with the charging box according to the contact resistance.

2. The method of claim 1, wherein the determining the contact resistance of the wireless headset with the charging box from the first voltage value, the second voltage value, and the charging current value comprises:

judging whether the wireless earphone is in a constant current charging stage or not according to the charging current value;

if yes, determining the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value.

3. The method according to claim 1 or 2, wherein the determining whether the wireless headset and the charging box are abnormally contacted according to the contact resistance comprises:

judging whether the contact resistance is larger than a resistance threshold value;

if so, determining that the wireless earphone is abnormally contacted with the charging box.

4. The method according to any one of claims 1 to 3, wherein the first voltage value is a fixed voltage value.

5. The method according to any one of claims 1 to 3, wherein the first voltage value is determined according to a voltage value of a battery of the wireless headset and a preset voltage value.

6. The method according to any one of claims 1 to 5, further comprising:

if the wireless earphone is abnormally contacted with the charging box, sending contact abnormal indication information to a user terminal connected with the wireless earphone;

the contact abnormity indication information is used for indicating that the wireless earphone is abnormally contacted with the charging box.

7. A method for anomaly detection is applied to a user terminal, and is characterized by comprising the following steps:

receiving contact abnormity indication information sent by a wireless earphone, wherein the contact abnormity indication information is used for indicating that the wireless earphone is abnormally contacted with a charging box;

providing contact cleaning prompt information, wherein the contact cleaning prompt information is used for prompting a user to clean the contact of the wireless earphone and/or the contact of the charging box.

8. A wireless headset, comprising:

the charging module is used for charging a battery of the wireless earphone according to the voltage of the input end of the charging module when the wireless earphone is charged through the charging box;

the detection module is used for detecting the charging current value of the wireless earphone when the wireless earphone is charged through the charging box;

the first control module is used for obtaining a second voltage value, the charging current value and a first voltage value, determining the contact resistance of the wireless earphone and the charging box according to the first voltage value, the second voltage value and the charging current value, and determining whether the wireless earphone and the charging box are abnormally contacted according to the contact resistance;

the second voltage value is the voltage value of the input end of the charging module of the wireless earphone when the wireless earphone is charged through the charging box, and the first voltage value is the voltage value output by the charging box when the charging box charges the wireless earphone.

9. The wireless headset of claim 8, wherein the first control module obtains the second voltage value by:

detecting a voltage value of an input end of the charging module to obtain the second voltage value; or

And detecting the voltage value of the input end of the charging module through a peripheral voltage detection module to obtain the second voltage value, wherein the peripheral voltage detection module is connected with the input end of the charging module.

10. The wireless headset of claim 8, wherein the detecting module is further configured to detect a voltage value at an input terminal of the charging module to obtain the second voltage value;

the first control module obtains the second voltage value from the detection module.

11. A wireless earphone according to any one of claims 8-10, wherein the first voltage value is a fixed voltage value.

12. A wireless earphone according to any one of claims 8-10, wherein the first voltage value is determined according to a voltage value of a battery of the wireless earphone and a preset voltage value;

the detection module is further used for detecting the voltage value of a battery of the wireless earphone;

the first control module is further configured to obtain a voltage value of a battery of the wireless headset, and determine the first voltage value according to the voltage value of the battery of the wireless headset and the preset voltage value.

13. A wireless headset according to any of claims 8-12, wherein, with the charging box in connection with the wireless headset,

the voltage output module of the charging box is connected with the charging module to form a charging path;

the second control module of the charging box is connected with the first control module to form a communication path.

14. The wireless headset of claim 13, wherein the first control module determines the contact resistance according to the formula:

15. A wireless headset according to any of claims 8 to 12, further comprising a first charging communication switching module, wherein:

the first charging communication switching module is connected with the charging module and the first control module;

under the condition that the charging box is connected with the wireless earphone, the first charging communication switching module is connected with a second charging communication switching module of the charging box to form a charging communication path, the state of the charging communication path is a charging state or a communication state, and the second charging communication switching module is connected with a voltage output module and a second control module of the charging box;

the first charging communication switching module is used for switching the state of the charging communication channel between the charging state and the communication state.

16. The wireless headset of claim 15, wherein the first control module determines the contact resistance according to the formula:

17. A wireless headset according to any of claims 8 to 16, wherein the first control module determines whether the wireless headset is abnormally in contact with the charging box by:

18. The wireless headset of any one of claims 8-17, wherein the first control module is further configured to send contact abnormality indication information to a user terminal connected to the wireless headset if the wireless headset is in abnormal contact with the charging box;

19. A wireless headset according to any of claims 8 to 18, wherein the first control module determines the contact resistance by: