CN117835110A

CN117835110A - Wearing tightness detection method and Bluetooth headset

Info

Publication number: CN117835110A
Application number: CN202211193634.4A
Authority: CN
Inventors: 简阳
Original assignee: Anker Innovations Co Ltd
Current assignee: Anker Innovations Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2024-04-05

Abstract

The application discloses a wearing tightness detection method and a Bluetooth headset. The wearing tightness detection method comprises the following steps: detecting a plurality of air pressure values in an ear canal in a first preset time period through an air pressure detection piece when the wearable device is worn on the ear of a user, so that the maximum value in the plurality of air pressure values is taken as a first air pressure peak value; comparing the first air pressure peak value with a preset air pressure threshold value or a preset air pressure range matched with a user to obtain a comparison result; the preset air pressure threshold value or the preset air pressure range is calculated by a machine learning algorithm based on a plurality of second air pressure peaks measured by a user; and determining a wearing tightness result corresponding to the comparison result. Through the mode, the wearing tightness result of the wearable equipment can be detected rapidly and accurately, so that the wearing tightness detection is more objective, the effectiveness of the wearing tightness result is improved, and the user experience is improved.

Description

Wearing tightness detection method and Bluetooth headset

Technical Field

The application relates to the technical field of communication, in particular to a wearing tightness detection method and a Bluetooth headset.

Background

At present, the types of wearable devices which are applied to the ears are more and more, and the wearing tightness of the wearable devices influences the application effect of the wearable devices, so that the wearing tightness requirements of people on the wearable devices are higher and higher. For example, for bluetooth headset, people are higher and higher to bluetooth headset's tone quality requirement, and whether bluetooth headset wears exactly one of the factors that influence tone quality, thereby bluetooth headset wears the improper time and can produce the gas leakage and lead to the audio frequency to listen to feel weak, influences user experience. However, the wearable device often needs a user to subjectively judge whether the wearable device is worn correctly when worn, and the subjective mode makes the user often unable to accurately perceive whether the wearable device is worn correctly when worn.

Disclosure of Invention

The embodiment of the application provides a wearing tightness detection method and a Bluetooth headset, which can enable wearing tightness detection to be more objective and effectively detect the wearing state of the headset.

In a first aspect, an embodiment of the present application provides a wearing tightness detection method, including:

detecting a plurality of air pressure values in an ear canal in a first preset time period through an air pressure detection piece when the wearable device is worn on the ear of a user, so that the maximum value in the plurality of air pressure values is taken as a first air pressure peak value;

Comparing the first air pressure peak value with a preset air pressure threshold value or a preset air pressure range matched with a user to obtain a comparison result; the preset air pressure threshold value or the preset air pressure range is calculated by a machine learning algorithm based on a plurality of second air pressure peaks measured by a user;

and determining a wearing tightness result corresponding to the comparison result.

In a second aspect, embodiments of the present application provide a bluetooth headset, the bluetooth headset including:

a Bluetooth chip;

the air pressure detection piece is coupled with the Bluetooth chip and is used for detecting a first air pressure peak value in the auditory canal in a first preset time period when the Bluetooth earphone is worn on the ear of a user;

and a memory storing a computer program executable by the Bluetooth chip to implement the above method.

The beneficial effects of this application are: in order to solve the problem, the method and the device are different from the situation of the prior art, the wearable device is used for causing air pressure change in the auditory canal after being worn in the auditory canal, and then a plurality of air pressure values in a period of time are detected by arranging the air pressure detecting piece in the wearable device, so that a first air pressure peak value in the ear when the wearable device is worn is obtained, a preset air pressure threshold value or a preset air pressure range is obtained by utilizing a machine learning algorithm based on a plurality of second air pressure peak values measured by a user in advance, the preset air pressure threshold value or the preset air pressure range is compared with the first air pressure peak value when the user wears the device, so that a wearing tightness result is determined, the wearing tightness detection is more objective, the user can be not required to subjectively judge the wearing tightness, and the accuracy of the wearing tightness result is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a bluetooth headset of the present application;

fig. 2 is a schematic block diagram of a circuit structure of an embodiment of the bluetooth headset of the present application;

fig. 3 is a schematic flow chart of a first implementation of an example of a wearing tightness detection method of the bluetooth headset of the present application;

FIG. 4 is a schematic flow chart of a second implementation of an example of a wear seal detection method of the present application;

fig. 5 is a schematic flow chart of a third implementation of the wearing tightness detection method example of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Through long-term research, the inventor of the application finds that the wearing tightness of the wearable device capable of being worn on the ear influences the application effect of the wearable device, and the wearing tightness requirement of people on the wearable device is also higher and higher. For example, for bluetooth headset, people have higher and higher tone quality requirements on bluetooth headset, and whether bluetooth headset wears exactly one of the factors that influence tone quality, thereby bluetooth headset can produce the gas leakage when wearing incorrectly and lead to the audio to listen to feel weak, influences user experience. However, the wearable device often needs a user to subjectively judge whether the wearable device is worn correctly when worn, and the subjective mode makes the user often unable to accurately perceive whether the wearable device is worn correctly when worn. Therefore, in order to solve the above-described problems, the present application proposes the following embodiments.

The wearable device described herein may be worn on the ear and isolate the air in the ear canal from the outside atmosphere. The wearable device comprises an air pressure detection part, a processor and a memory, wherein the air pressure detection part can detect the air pressure value in the auditory canal when the wearable device is worn on the ear, the memory can store the air pressure value detected by the air pressure detection part, and the processor can process a plurality of air pressure values acquired from the memory. The air pressure detection part is an air pressure sensor or an MEMS microphone.

In particular, the wearable device may be an earplug, an earphone, an ear disease monitoring instrument, etc., and hereinafter, a bluetooth earphone is taken as an example, and the structure of the bluetooth earphone is exemplarily described.

As shown in fig. 1, the bluetooth headset 10 may include a headset body 100 and an earcap 200. The earcap 200 is detachably connected to the earphone body 100.

In some embodiments, the bluetooth headset 10 further includes a mouthpiece 110, and the mouthpiece 110 is disposed on the headset body 100. The mouthpiece 110 may also be referred to as an ear tip for transmitting sound emitted from inside the bluetooth headset 10 to the outside, for example, into an ear. Specifically, the earphone body 100 may include an earshell 120. The mouthpiece 110 is connected to the earmuff 120. The earmuff 120 may be provided with a receiving chamber 121, and the mouthpiece 110 communicates with the receiving chamber 121. The earphone body 100 may further include a speaker 130, and the speaker 130 is disposed in the accommodating cavity 121. The mouthpiece 110 may have a sound outlet passage 111 communicating with the outside. Speaker 130 may transmit sound to the outside through sound outlet channel 111 of mouthpiece 110.

The earphone body 100 may further include a circuit board 140 and a battery 150. For the bluetooth headset 10 without a handle, the circuit board 140 and the battery 150 may be disposed within the housing cavity 121. Of course, for the bluetooth headset 10 with a handle, i.e., the earmuff 120 may be provided with the handle 122, the battery 150 and the circuit board 140 may be disposed within the handle 122.

The earcap 200 may be fitted over the outer circumference of the mouthpiece 110. Specifically, the earcap 200 may be detachably mounted to the mouthpiece 110. When the user wears the bluetooth headset 10, the earcap 200 may extend into the ear canal of the user and be worn on the user's ear.

The bluetooth headset 10 may be an active noise reduction headset, for example, the bluetooth headset 10 may include a noise reduction assembly 160. The noise reduction assembly 160 may be disposed within the receiving cavity 121 and/or the mouthpiece 110. The noise reduction component 160 may be an ANC noise reduction component 160, for example, may include an ANC noise reduction circuit and a noise reduction microphone electrically connected to the ANC noise reduction circuit. The noise reduction microphone may be a feedback microphone (i.e., FB MIC) or a feedforward microphone (i.e., FF MIC).

As shown in fig. 2, the bluetooth headset 10 may include a bluetooth chip 170 and an air pressure detecting member 180. The bluetooth chip 170 is coupled to the air pressure detecting member 180. Optionally, the bluetooth headset 10 may further include a memory 190 coupled to the bluetooth chip 170. Optionally, the bluetooth headset 10 may further include a radio frequency circuit 171 coupled to the bluetooth chip 170.

The bluetooth chip 170 may be integrated on the circuit board 140, and the radio frequency circuit 171 is disposed on the bluetooth chip 170. The air pressure detecting member 180 is disposed in the sound outlet passage 111. The air pressure detecting unit 180 is configured to detect an air pressure value in the ear canal in real time or periodically when the bluetooth headset 10 is worn on the ear of the user, and takes a maximum value of a plurality of air pressure values within a first preset time period as a first air pressure peak value. The bluetooth chip 170 is configured to receive the air pressure value transmitted by the air pressure detecting element 180, and may be used as a result of the processor processing calculation based on the first air pressure peak value to determine the wearing tightness of the bluetooth headset 10 in the ear canal. Because the bluetooth chip 170 is electrically connected with the air pressure detecting element 180, the air pressure value in the auditory canal detected by the air pressure detecting element 180 when being worn in the ear can be transmitted through the circuit, and can be transmitted to the bluetooth chip 170 as an electrical signal. The bluetooth chip 170 or the memory 190 is used to store a first preset number of first air pressure peaks.

Since the air pressure detecting member 180 is disposed in the mouthpiece 110, the air pressure detecting member 180 is disposed at the mouthpiece of the sound outlet channel 111 when the bluetooth headset 10 is worn in the ear, so that the air pressure value in the ear canal of the bluetooth headset 10 can be accurately detected when the bluetooth headset is worn in the ear.

Alternatively, the air pressure detecting member 180 may be an air pressure detecting sensor. The air pressure sensor is characterized in that a vacuum cavity and a Wheatstone bridge are processed on a monocrystalline silicon wafer by utilizing an MEMS technology, the output voltages at two ends of a bridge arm of the Wheatstone bridge are in direct proportion to the applied pressure, and the air pressure sensor has the characteristics of small volume, high precision, high response speed and no influence of temperature change after temperature compensation and calibration. The output mode is generally two modes of analog voltage output and digital signal output, wherein the digital signal output mode can conveniently and efficiently transmit the air pressure value.

Alternatively, the air pressure detecting member is a MEMS microphone. The MEMS microphone is used for acquiring an electric signal representing the air pressure change in the auditory canal in a first preset time period, and analyzing the frequency response of the electric signal to obtain a plurality of air pressure values. Wherein the MEMS (microelectromechanical system) microphone is a hollow package consisting of a substrate and a package cover, and the internal components have an acoustic sensor and an interface ASIC. The acoustic sensor is provided with a thin vibrating diaphragm, the vibrating diaphragm can bend along with the change of air pressure, the change of the air pressure can be converted into an electric signal when the vibrating diaphragm moves, and an air pressure value representing the air pressure in the auditory canal is generated based on the electric signal, wherein the maximum value in a plurality of air pressure values is taken as a first air pressure peak value.

Specifically, the memory 190 may be built in the bluetooth chip 170 or may be independent of the bluetooth chip 170. Additional memory 190 may also be provided within the bluetooth chip 170. The bluetooth chip 170 receives the air pressure value transmitted by the air pressure detecting element 180 through the electrical circuit, further analyzes and processes the air pressure value to obtain a first air pressure peak value, and stores the first air pressure peak value in the bluetooth chip 170 or the memory 190. The memory 190 stores a computer program capable of executing the wearing seal detection method stored in the memory 190 by the bluetooth chip 170.

Memory 190 may be RAM, ROM, or other type of storage device. In particular, memory 190 may include one or more computer-readable storage media, which may be non-transitory. Memory 190 may also include high-speed random access memory 190, as well as non-volatile memory 190, such as one or more disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 190 is used to store at least one piece of program code. In this embodiment, the memory 190 may store the air pressure values detected by the air pressure detecting element 180, so that the bluetooth chip 170 may acquire a plurality of air pressure values for subsequent calculation.

The Radio Frequency circuit 171 is configured to receive and transmit RF (Radio Frequency) signals, also referred to as electromagnetic signals. The radio frequency circuit 171 may communicate with an external device through electromagnetic signals, and may also be referred to as a communication circuit. The radio frequency circuit 171 converts an electric signal into an electromagnetic signal to transmit, or converts a received electromagnetic signal into an electric signal. The radio frequency circuit 171 may communicate with external devices via at least one wireless communication protocol. The wireless communication protocol includes, but is not limited to: the world wide web, metropolitan area networks, intranets, generation mobile communication networks (2G, 3G, 4G, and 5G), wireless local area networks, and/or WiFi (Wireless Fidelity ) networks. In some embodiments, the radio frequency circuit 171 may further include NFC (Near Field Communication, short-range wireless communication), BLE (Bluetooh Low Energy, bluetooth low energy technology), SPP (Serial Port Profile, for analog serial communication), and other related circuits, which are not limited in this application.

As shown in fig. 2, the external device 20 is a device independent from the bluetooth headset 10, and may receive the electromagnetic signal emitted by the radio frequency circuit 171 through bluetooth to receive the wearing tightness result obtained by the bluetooth chip 170. Specifically, the external device 20 is provided with a display screen, and the external device 20 can display a corresponding prompt through the display screen. The external device 20 may be, for example, an electronic device such as a cellular phone, a computer, or the like. In other embodiments, the wearing seal result may be displayed without the external device 20, for example, the Bluetooth headset 10 may obtain the wearing seal result and then play the result in voice through the speaker 130.

Since the air pressure in the ear canal changes when the bluetooth headset 10 is worn in the ear, the air pressure rises to a peak value and then slowly drops to the standard atmospheric pressure, the maximum air pressure value in the first preset time period detected by the user when wearing the bluetooth headset 10 by detecting the wearing tightness can be set as the first air pressure peak value. The first preset time period required for the air pressure detecting part 180 to detect the first air pressure peak is set to 3s, the starting point is the time point when the user wears the bluetooth headset 10, and the ending point is 3s after the user wears the bluetooth headset 10. Since the air pressure of most users can be instantaneously increased to the first air pressure peak value after wearing the bluetooth headset 10, and the first preset time period needs to cover the time when the air pressure of most users is increased to the air pressure peak value after wearing the bluetooth headset 10, setting the first preset time period to 3s can ensure that the air pressure detector 180 can detect the first air pressure peak value in the ear canal of the user when the bluetooth headset 10 is worn on the ear of the user in the first preset time period.

The bluetooth chip 170 is configured to compare the first air pressure peak value with a preset air pressure threshold value or a preset air pressure range matched with a user, obtain a comparison result, and determine a wearing tightness result corresponding to the comparison result. The preset air pressure threshold value or the preset air pressure range is calculated by a machine learning algorithm based on a plurality of second air pressure peaks measured by a user. The preset air pressure threshold or the preset air pressure range is an air pressure peak or an air pressure range which can represent the inside of the auditory canal of the Bluetooth headset 10 when the user wears the Bluetooth headset correctly.

Specifically, if the comparison result is that the first air pressure peak value is smaller than the preset air pressure threshold value or the first air pressure peak value is not in the preset air pressure range when the earphone is worn each time, the phenomenon that the earphone is worn with leakage air and sound is indicated, and the wearing tightness result is determined to be a wearing error. If the comparison result is that the first air pressure peak value is larger than or equal to the preset air pressure threshold value or the first air pressure peak value is in the preset pressure range, the wearing tightness result is determined to be correct.

Different from the frequency response detection method for detecting the sound pressure frequency change curve in the auditory canal, the method for detecting the air pressure can be adopted to determine the result of wearing tightness after detecting the first air pressure peak value in the auditory canal during wearing, so that the determined result of wearing tightness is more convenient. And the detection of the air pressure can be accurate to 0.1hPa, so that the estimation of the wearing tightness result is more accurate, and the error is smaller.

For the case that the Bluetooth headset 10 is worn for the first time by the user to detect the wearing tightness, the Bluetooth headset 10 can acquire and record the user information of the user through other sensors, and perform the step of detecting the first preset number of second air pressure peaks, so as to calculate a preset air pressure threshold value or a preset air pressure range according to the first preset number of second air pressure peaks, and perform the comparison between the first air pressure peak value and the preset air pressure threshold value or the preset air pressure range to obtain the wearing tightness result which accords with the individual characteristics of the user. The user information may be information such as the shape of the ear canal, the distance between the ear phone and the tympanic membrane, etc., which are detected by other sensors of the bluetooth headset 10 when the bluetooth headset 10 is first worn by the user.

After the user completes the first wearing of the bluetooth headset 10, the user information of the user and the obtained preset air pressure threshold value or preset air pressure range are subjected to matching record, so that the user can match the corresponding preset air pressure threshold value or preset air pressure range of the user according to the user information when wearing the bluetooth headset 10 next time, and the wearing tightness result which accords with the individual characteristics of the user is obtained through corresponding comparison. So set up, can make same user need not to wear bluetooth headset 10 at every turn and all detect the step of the second atmospheric pressure peak value of first preset quantity, improved bluetooth headset 10 and worn the efficiency that the seal detected, improved bluetooth headset 10's use experience and feel.

Before comparing the first air pressure peak value with a preset air pressure threshold value or a preset air pressure range to obtain a comparison result and determining a wearing tightness result corresponding to the comparison result, that is, when the user wears the bluetooth headset 10 for the first time, the preset air pressure threshold value or the preset air pressure range with the characteristics of the user using the bluetooth headset 10 needs to be calculated by using a machine learning algorithm.

The machine learning algorithm is an algorithm capable of automatically analyzing and obtaining rules from a data set and predicting unknown data by utilizing the rules. Through a machine learning algorithm, the in-ear air pressure data set characteristics corresponding to the individual auditory canal of the user can be calculated to obtain a preset air pressure threshold value or a preset air pressure range with the individual characteristics of the user, so that the wearing tightness result obtained by comparing the first air pressure peak value of the user with the preset air pressure threshold value or the preset air pressure range is more accurate, and the individual requirements of the user are met.

Specifically, in calculating the preset air pressure threshold or the preset air pressure range using the machine learning algorithm, the air pressure detecting unit 180 is configured to detect a plurality of air pressure values in the ear canal within the first preset time period, and take the maximum value of the plurality of air pressure values as the first air pressure peak value. Further, the air pressure detecting unit 180 stores the first air pressure peak value measured when the air pressure detecting unit is worn on the ear of the user in the memory 190 as the second air pressure peak value with the latest time, and deletes the second air pressure peak value stored in the memory 190 with the earliest time, so that the number of the second air pressure peak values in the memory is the first preset number. Namely, the storage principle of the second air pressure peak value is a first-in first-out principle, the first stored second air pressure peak value is deleted, and the latest first preset number of second air pressure peak values are reserved.

The first preset number is characterized by the number of times of detection of the second air pressure peak, that is, the number of times of wearing the bluetooth headset 10. A first preset number of second air pressure peaks obtained by the first preset number of detection times. The first preset number may be a default number that is set, or may be another number selected by the user. For example, if the first preset number is 20, the user needs to wear the bluetooth headset 10 20 times, the bluetooth chip 170 or the memory 190 stores 20 second air pressure peaks detected by the air pressure detecting unit 180 when the bluetooth headset 10 is worn according to the time record, and if the latest second air pressure peak is detected by the air pressure detecting unit 180, the bluetooth chip 170 or the memory 190 deletes the earliest second air pressure peak and stores the latest 20 second air pressure peaks.

Further, the bluetooth chip 170 is configured to obtain a plurality of second air pressure peaks from a first preset number of second air pressure peaks measured according to a user. The bluetooth chip 170 may determine the number of the acquired plurality of second air pressure peaks according to the accuracy requirement of the preset air pressure threshold or the preset air pressure range, so as to calculate the second air pressure peak value acquired from the first preset number of second air pressure peak values to obtain the preset air pressure threshold or the preset air pressure range with higher accuracy. In this embodiment, the first preset number of second air pressure peaks is removed from the remaining plurality of second air pressure peaks except for the largest second air pressure peak and the smallest second air pressure peak, thereby obtaining remaining second air pressure peaks. For example, if the first preset number is 20, the number of the plurality of second air pressure peaks acquired by the bluetooth chip 170 is 18, which is the highest value and the lowest value, removed first. Therefore, the calculated preset air pressure threshold value or the preset air pressure range can reduce the interference reduction error of the extreme value, and the accuracy of calculating the preset air pressure threshold value is improved.

Further, the bluetooth chip 170 is configured to perform a process of averaging the acquired plurality of second air pressure peaks to obtain a preset air pressure threshold or a preset air pressure range. The averaging process includes a root mean square calculation, and the bluetooth chip 170 is configured to perform the root mean square calculation on the acquired multiple second air pressure peaks to obtain a first root mean square value. In other embodiments, the averaging process may be an arithmetic average, a weighted average, or other averaging process.

The bluetooth chip 170 performs root mean square calculation on the acquired multiple second air pressure peaks, specifically, square calculation is performed on the acquired multiple second air pressure peaks, average calculation is performed on the squared multiple second air pressure peaks to obtain an average value, and the average value is squared to obtain a first root mean square value. According to the embodiment, the influence of errors of the obtained results is reduced by adopting a plurality of second air pressure peaks obtained through root mean square calculation, the calculated preset air pressure threshold value or the preset air pressure range is more fit with the personal characteristics of a user, and the accuracy of the airtight result obtained through comparison of the preset air pressure threshold value or the preset air pressure range is improved.

In some embodiments, the first root mean square value is used as a preset air pressure threshold value to determine the wearing tightness result of the bluetooth headset 10. The method for judging the wearing tightness of the bluetooth headset 10 by using the first root mean square value is specifically to directly compare the first air pressure peak value with the first root mean square value and compare whether the first air pressure peak value is greater than or equal to or less than the first root mean square value so as to judge whether the wearing tightness result is correct.

Or calculating the first root mean square value by using a preset deviation ratio to obtain a preset air pressure range, and judging the wearing tightness result of the earphone by using the preset air pressure range. The preset deviation ratio is a preset air pressure threshold value, so that a floating space can be allowed to exist, and a preset air pressure range is obtained by calculating the preset deviation ratio based on the preset air pressure threshold value. The preset deviation ratio may be a default value or may be specified by a user, and the preset deviation ratio may be set to 10% or 20% or other values, for example, when the preset deviation ratio may be set to 20%, a threshold value 20% smaller than the first root mean square value and a threshold value 20% larger than the first root mean square value are calculated by using the first root mean square value, and a preset air pressure range is set between the two threshold values.

After obtaining the preset air pressure threshold value or the preset air pressure range, the bluetooth chip 170 may compare the first air pressure peak value measured by the user wearing the bluetooth headset 10 each time with the preset air pressure threshold value or the preset air pressure range, to obtain a comparison result, and further determine a wearing tightness result corresponding to the comparison result.

If the comparison result of each wearing of the bluetooth headset 10 is that the first air pressure peak value is smaller than the preset air pressure threshold value, or the first air pressure peak value is not in the preset air pressure range, the phenomenon of leakage and sound leakage of the headset wearing is indicated, and the wearing tightness result is determined to be a wearing error. If the comparison result is that the first air pressure peak value is larger than or equal to the preset air pressure threshold value or the first air pressure peak value is in the preset pressure range, the wearing tightness result is determined to be correct.

For the way of calculating the wearing tightness result, besides comparing the first air pressure peak value with the preset air pressure threshold value or the preset air pressure range, the wearing tightness result can be calculated through the air pressure change in the ear after the earphone is worn in the ear, and the following specific reference can be made:

because the air pressure value in the ear canal will rise to a peak value and then slowly drop to the standard atmospheric pressure after the bluetooth headset 10 is worn in the ear, the slope can reflect the changing speed of the variable of the change curve at a certain point, so the processing of the calculated air pressure value by adopting the slope calculating method can reflect the speed of the process that the air pressure value slowly drops from the peak value to the standard atmospheric pressure after the bluetooth headset 10 is worn in, and the wearing tightness result is reflected by the speed. Specifically, if the slope is larger, the air pressure value slowly drops from the peak value to the standard atmospheric pressure, and the wearing tightness is poorer, so that the wearing result of the Bluetooth headset 10, which is worn by mistake, is obtained. If the slope is smaller, the speed of the air pressure value from the peak value to the standard atmospheric pressure is slower, the wearing tightness of the earphone is better, and the Bluetooth earphone 10 is further correctly worn.

The air pressure detecting element 180 is configured to obtain, when detecting that the air pressure value in the current ear canal reaches the preset standard air pressure threshold, a plurality of air pressure values acquired at time sequence intervals in a time period from the first air pressure peak value to the current air pressure value, and send the air pressure values to the bluetooth chip 170. The standard air pressure threshold is a preset standard atmospheric pressure value. The bluetooth chip 170 is configured to calculate a slope value between every two adjacent air pressure values for representing air pressure variation, so as to obtain a plurality of slope values, calculate a representing slope value by using the plurality of slope values, and further obtain a matched wearing rating result by using the table representing slope value.

Further, the interval time for the air pressure detecting element 180 to collect the plurality of air pressure values in the time period from the change of the first air pressure peak value to the current air pressure value may be 5ms, may be 10ms or other shorter interval time, so as to obtain the plurality of air pressure values to perform subsequent slope calculation, reduce the interference of errors, and further obtain a more accurate wearing tightness result.

The bluetooth chip 170 acquires a plurality of air pressure values from the air pressure values stored in the bluetooth chip 170 or the memory 190 at time intervals in a period from the first air pressure peak value to the current air pressure value, and calculates a slope value between every two adjacent air pressure values in the plurality of air pressure values, wherein the slope value is used for representing the air pressure change.

Further, the bluetooth chip 170 is configured to perform root mean square calculation on the plurality of slope values to obtain a second root mean square value, and take the second root mean square value as the characterization slope value. Specifically, the bluetooth chip 170 performs square calculation on the plurality of slope values, further performs average calculation on the square values of the plurality of slope values, and finally performs evolution calculation to obtain the characterization slope value. The use of the root mean square calculated value of the characterizing slope gives an interference that effectively reduces the error. In other embodiments, the calculation of the characterization slope value may be an arithmetic average, a weighted average, or other averaging process.

Further, the bluetooth chip 170 is configured to substitute the characterization slope value into a preset mapping relationship to match the wear rating result. The preset mapping relation is used for representing the corresponding relation between the characterization slope value and the wearing rating result. Specifically, since the air pressure will slowly decrease from the first air pressure peak value to the standard air pressure threshold value when the bluetooth headset 10 is worn in the ear, if the air pressure decreases to the standard air pressure threshold value at a higher speed in this process, it indicates that the bluetooth headset 10 is worn with poor tightness and the headset is worn incorrectly, and at this time, the change of the air pressure value is larger, and the value representing the slope value is also larger. Therefore, the larger the value of the characteristic slope value, the more incorrect the Bluetooth headset 10 is worn and the poor the wearing tightness of the headset is, the smaller the value of the characteristic slope value, the more correct the corresponding Bluetooth headset 10 is worn and the better the wearing tightness is. Therefore, a preset mapping relation is correspondingly formulated between the characterization slope value and the wearing tightness, the wearing tightness can be standardized, and a more visual wearing rating result is obtained.

The higher the wearing rating result is, the smaller the extremum difference of the value range corresponding to the characterization slope value is, and the extremum difference is the difference between the maximum acceptable value and the minimum acceptable value of the value range. The higher the wearing rating result is, the better the wearing tightness of the Bluetooth headset 10 is, and the smaller the extreme value difference of the corresponding value range is, so that more accurate grading can be performed when the Bluetooth headset 10 is correctly worn, the more accurate wearing tightness result is obtained, and the higher wearing requirement experience of a user is met.

Specifically, the wearing rating result may be set to various levels, for example, may be set to 3 levels, 4 levels, 6 levels, or the like according to the wearing tightness of the bluetooth headset 10 from optimal to differential levels. The wearing rating results of the embodiment are provided with 6 levels, namely, from good to bad, the level is "S", "A+", "A", "B", "C" and "F", when the time interval for acquiring the air pressure value is 10ms, the characterization slope value corresponding to the level "S" is 0-50Pa/10ms, the characterization slope value corresponding to the level "A+" is 50-200Pa/10ms, the characterization slope value corresponding to the level "A" is 200-500Pa/10ms, the characterization slope value corresponding to the level "B" is 500-800Pa/10ms, the characterization slope value corresponding to the level "C" is 800-1200Pa/10ms, and the characterization slope value corresponding to the level "F" is more than 1200Pa/10ms. The "S", "a+", "a", "B" and "C" levels mean that the bluetooth headset 10 is correctly worn, and the "F" level means "Fail" level, which indicates that the bluetooth headset 10 is incorrectly worn.

The change of the air pressure slope in the ear canal after the Bluetooth headset 10 is worn is calculated to score the wearing rating result, so that the air pressure change in the ear canal is further fed back, whether the Bluetooth headset 10 is worn correctly or not can be reflected, and the subsequent leakage condition after the Bluetooth headset 10 is worn can be continuously detected.

In other embodiments, the air pressure drop time period from the first air pressure peak value to the standard air pressure threshold value in the ear canal can be used to determine the tightness of the Bluetooth headset 10. If the air pressure drop time is longer, the air tightness of the Bluetooth headset 10 is better, and if the air pressure drop time is shorter, the air tightness of the Bluetooth headset 10 is worse.

Specifically, the air pressure detecting element 180 is configured to continuously detect the air pressure value in the ear canal after obtaining the first air pressure peak value, and transmit the air pressure value to the bluetooth chip 170. The bluetooth chip 170 is configured to receive the air pressure value, determine whether the air pressure value is equal to a preset standard air pressure threshold, if so, calculate an air pressure drop duration between an acquisition time of the first air pressure peak and an acquisition time of the preset standard air pressure threshold, and determine a wearing rating result matched with the air pressure drop duration by using a mapping table of the preset air pressure drop duration and the wearing rating result. The preset standard air pressure threshold may be set to a value of the local standard atmospheric pressure, and when the air pressure value in the ear canal drops to the value of the local standard atmospheric pressure, it indicates that the bluetooth headset 10 has completely leaked air, and at the same time, the judgment of the wearing rating result is more accurate. The mapping table of the wearing rating result is a mapping table which is prepared before evaluating the tightness and is matched with the wearing rating result, the wearing rating result which is matched with the wearing rating result in the preset air pressure decreasing time length can be graded according to the time length of the wearing tightness from optimal to poor, one wearing rating result can be correspondingly matched in different preset air pressure decreasing time lengths, and the air pressure decreasing time length obtained by wearing the Bluetooth headset 10 each time is substituted into the mapping table to be matched and graded with the matched wearing rating result when evaluating the wearing tightness, so that the wearing rating result is determined.

Of course, the above determination of the wear rating result may be regarded as a determination of the level of wear tightness result. In this way, the level of the wearing tightness result may be determined by determining the corresponding level of the wearing tightness result, that is, determining which level of the wearing tightness result is the wearing tightness result after the above-mentioned judging air pressure peak value is greater than the preset air pressure threshold value or is within the preset air pressure range to obtain that the wearing tightness result is correctly worn.

The bluetooth chip 170 is used for bluetooth wireless connection with the external device 20 through the radio frequency circuit 171. The bluetooth chip 170 is configured to send the wearing tightness result to the external device 20 through the radio frequency circuit 171, so that the external device 20 is configured to perform a corresponding prompt on the display screen according to the wearing tightness result.

Specifically, after the bluetooth chip 170 compares the preset air pressure threshold value or the preset air pressure range with the first air pressure peak value, if the obtained wearing tightness result is that the wearing tightness is not correct, the bluetooth chip 170 wirelessly transmits the wearing tightness result to the external device 20 through bluetooth, and the external device 20 carries out corresponding wearing error prompt on a display screen thereof. If the obtained wearing tightness result is that the wearing is correct, the bluetooth chip 170 wirelessly transmits the wearing tightness result to the external device 20 through bluetooth, and the external device 20 carries out a corresponding prompt of correct wearing on a display screen thereof.

Optionally, after the bluetooth chip 170 substitutes the characterization slope value into the preset mapping relationship to match the wear rating result, for example, if the wear rating result is matched to be the level "F", the bluetooth chip 170 wirelessly transmits the wear rating result to the external device 20 through bluetooth, and the external device 20 performs a corresponding prompt of wear error on its display screen and displays the result of the level "F". If the wearing rating result is matched with the other words except the level "F", the bluetooth chip 170 wirelessly transmits the wearing rating result to the external device 20 through bluetooth, and the external device 20 carries out a prompt of correct wearing and displays the wearing rating result of the corresponding level on a display screen thereof.

As shown in fig. 3, based on the content of the bluetooth headset 10, the wearing tightness detection method of the wearable device of the present application is exemplarily described as follows, which includes the steps of:

s100: when the wearable device is worn on the ear of the user, detecting a plurality of air pressure values within a first preset time period through the air pressure detection piece, and taking the maximum value of the plurality of air pressure values as a first air pressure peak value.

When the wearable device is worn on the ear of the user, the user information of the user can be obtained, and whether the user information is historical user information or not can be further judged. If the user information is historical user information, the user information of the user is used to match a preset air pressure threshold value or a preset air pressure range obtained by the first preset number of second air pressure peaks measured and stored by the user in the memory 190.

If the user information does not belong to the historical user information, a plurality of second air pressure peaks of the user are acquired to calculate a preset air pressure threshold or a preset air pressure range with personal characteristics of the user.

Specifically, a plurality of air pressure values within a first preset time period are detected by the air pressure detecting member 180, wherein the air pressure detecting member 180 is an air pressure sensor. Alternatively, the air pressure detecting element 180 is an MEMS microphone, and the wearable device may obtain, through the MEMS microphone, an electrical signal representing the air pressure change in the ear canal in a first preset period of time, and analyze the frequency response of the electrical signal to obtain a plurality of air pressure values.

The method comprises the steps of setting an air pressure peak value detected by wearing the wearable equipment when a user wears the airtight detection as a first air pressure peak value. The first preset time period required for the air pressure detecting part 180 to detect the first air pressure peak is set to 3s, the starting point thereof is the time point when the user wears the wearable device, and the ending point thereof is 3s after the user wears the wearable device. Since most users can instantly raise the air pressure to the first air pressure peak value after wearing the wearable device, and the first preset time period needs to cover the time when most users raise the air pressure to the air pressure peak value after wearing the wearable device, setting the first preset time period to 3s can ensure that the air pressure detector 180 can detect the first air pressure peak value in the ear canal of the user when wearing the wearable device on the ear of the user in the first preset time period.

Further, the air pressure peak value of the first preset number is detected and stored according to the first preset number set by extraction. The first preset number is characterized by the detection times of the air pressure peak value, namely the wearing times of wearable equipment. A first preset number of air pressure peaks obtained by the first preset number of detection times. The first preset number may be a default number that is set, or may be another number selected by the user.

Further, the first air pressure peak value is stored in the memory 190 of the wearable device as the second air pressure peak value with the latest time, and the second air pressure peak value with the earliest time stored in the memory is deleted. Such that the number of air pressure peaks in the memory 190 is a first preset number. Namely, the storage principle of the air pressure peak values is a first-in first-out principle, the air pressure peak value stored first is deleted, and the latest first preset number of air pressure peak values are reserved. Such that the number of second air pressure peaks in the memory 190 is a first preset number. Namely, the storage principle of the second air pressure peak value is a first-in first-out principle, the first stored second air pressure peak value is deleted, and the latest first preset number of second air pressure peak values are reserved.

The first preset quantity is characterized as the detection times of the second air pressure peak value, namely the wearing times of the wearable equipment. A first preset number of air pressure peaks obtained by the first preset number of detection times. The first preset number may be a default number that is set, or may be another number selected by the user. For example, if the first preset number is 20, the user needs to wear the wearable device 20 times, the memory stores 20 second air pressure peaks detected by the air pressure detecting unit 180 when the wearable device is worn according to the time record, and if the air pressure detecting unit 180 detects that the latest second air pressure peak is generated afterwards, the memory deletes the earliest second air pressure peak and stores the latest 20 second air pressure peaks.

S200: and comparing the first air pressure peak value with a preset air pressure threshold value or a preset air pressure range matched with the user to obtain a comparison result.

The preset air pressure threshold value or the preset air pressure range is calculated by a machine learning algorithm based on a plurality of second air pressure peaks measured by a user.

Specifically, a plurality of second air pressure peaks are acquired from a first preset number of second air pressure peaks measured according to a user. The number of the acquired plurality of second air pressure peaks can be determined according to the accuracy requirement of the preset air pressure threshold value or the preset air pressure range, so that the preset air pressure threshold value or the preset air pressure range with higher accuracy is obtained after the second air pressure peaks acquired from the first preset number of second air pressure peaks are calculated. In this embodiment, the first preset number of second air pressure peaks is removed from the remaining plurality of second air pressure peaks except for the largest second air pressure peak and the smallest second air pressure peak, thereby obtaining remaining second air pressure peaks. For example, if the first preset number is 20, the number of the acquired plurality of second air pressure peaks is 18 after the highest value and the lowest value are removed. Therefore, the calculated preset air pressure threshold value or the preset air pressure range can reduce the interference reduction error of the extreme value, and the accuracy of calculating the preset air pressure threshold value is improved.

Further, the acquired plurality of second air pressure peaks are subjected to averaging treatment to obtain a preset air pressure threshold value or a preset air pressure range. Specifically, root mean square calculation is performed on the acquired plurality of second air pressure peaks, and a first root mean square value is obtained. The averaging process may also be an arithmetic average, a weighted average, or other means of averaging.

Specifically, square calculation is performed on the obtained plurality of second air pressure peaks, average calculation is performed on the squared plurality of second air pressure peaks to obtain an average value, and the average value is squared to obtain a first root mean square value. According to the embodiment, the influence of errors of the obtained results is reduced by adopting a plurality of second air pressure peaks obtained through root mean square calculation, the calculated preset air pressure threshold value or the preset air pressure range is more fit with the personal characteristics of a user, and the accuracy of the airtight result obtained through comparison of the preset air pressure threshold value or the preset air pressure range is improved.

In some embodiments, the first root mean square value is used as a preset air pressure threshold value to determine the wearing tightness result of the wearable device. And judging the wearing tightness result of the wearable equipment by using the first root mean square value, namely directly comparing the first air pressure peak value with the first root mean square value, and comparing whether the first air pressure peak value is larger than or equal to or smaller than the first root mean square value so as to judge whether the wearing tightness result is correct.

Or calculating the first root mean square value by using a preset deviation proportion to obtain a preset air pressure range, and judging the wearing tightness result of the wearable equipment by using the preset air pressure range. The preset deviation ratio is a preset air pressure threshold value, so that a floating space can be allowed to exist, and a preset air pressure range is obtained by calculating the preset deviation ratio based on the preset air pressure threshold value. The preset deviation ratio may be a default value or may be specified by a user, and the preset deviation ratio may be set to 10% or 20% or other values, for example, when the preset deviation ratio may be set to 20%, a threshold value 20% smaller than the first root mean square value and a threshold value 20% larger than the first root mean square value are calculated using the first root mean square value, thereby determining the preset air pressure range based on the preset air pressure threshold value.

After the preset air pressure threshold value or the preset air pressure range is obtained, the first air pressure peak value measured by the user wearing the wearable equipment each time is compared with the preset air pressure threshold value or the preset air pressure range, and a comparison result is obtained.

S300: and determining a wearing tightness result corresponding to the comparison result.

If the comparison result of wearing the wearable equipment every time is that the first air pressure peak value is smaller than the preset air pressure threshold value or the first air pressure peak value is not in the preset air pressure range, the phenomenon of leakage and sound leakage of wearing is indicated, and the wearing tightness result is determined to be a wearing error. If the comparison result is that the first air pressure peak value is larger than or equal to the preset air pressure threshold value or the first air pressure peak value is in the preset pressure range, the wearing tightness result is determined to be correct.

For the way of calculating the wearing tightness result, in addition to comparing the first air pressure peak value with the preset air pressure threshold value or the preset air pressure range in the steps S100-S300, the wearing tightness result can be calculated by the air pressure change in the ear after the wearable device is worn in the ear, and the specific reference may be made to the steps S400-S500 shown in fig. 4:

s400: when the current air pressure value reaches the preset standard air pressure threshold value through the air pressure detection part, acquiring a plurality of air pressure values which are acquired at time sequence intervals in a time period from the first air pressure peak value to the current air pressure value.

When the air pressure detecting member 180 detects that the air pressure value in the current ear canal reaches the preset standard air pressure threshold value, a plurality of air pressure values acquired at time sequence intervals in a period of time from the first air pressure peak value to the current air pressure value are acquired. Wherein the standard air pressure threshold is a value of standard atmospheric pressure. As used herein, "reaching the predetermined standard air pressure threshold" may mean that the predetermined standard air pressure threshold is equal to or falls within a predetermined range including the predetermined standard air pressure threshold.

Specifically, the interval time for the air pressure detecting element 180 to collect the plurality of air pressure values in the time period from the change of the first air pressure peak value to the current air pressure value may be 5ms, may be 10ms or other shorter interval time, so as to obtain the plurality of air pressure values to perform subsequent slope calculation, reduce the interference of errors, and further obtain a relatively accurate wearing tightness result.

S500: slope values between each adjacent two air pressure values are calculated to characterize the air pressure change to obtain a plurality of slope values.

Specifically, a slope value for characterizing a change in air pressure between the air pressure nearest to the first air pressure peak and between each adjacent two air pressure values is calculated to obtain a plurality of slope values.

S600: calculating a characteristic slope value by using the plurality of slope values, and further obtaining a matched wearing rating result by using the characteristic slope value.

And carrying out root mean square calculation on the plurality of slope values to obtain a second root mean square value, and taking the second root mean square value as the characteristic slope value. The method comprises the steps of carrying out square calculation on a plurality of slope values, further carrying out average calculation on the square values of the plurality of slope values, and finally carrying out evolution calculation to obtain the characterization slope value. The use of the root mean square calculated value of the characterizing slope gives an interference that effectively reduces the error. In other embodiments, the calculation of the characterization slope value may be an arithmetic average, a weighted average, or other averaging process.

Further, substituting the characterization slope value into a preset mapping relation to match the wearing rating result. The preset mapping relation is used for representing the corresponding relation between the characterization slope value and the wearing rating result. Specifically, since the air pressure will slowly drop from the first air pressure peak value to the standard air pressure threshold value when the wearable device is worn in the ear, if the air pressure drops to the standard air pressure threshold value at a higher speed in the process, the wearing tightness of the wearable device is poor and the wearable device is not worn correctly, at this time, the change of the air pressure value is larger, and the value representing the slope value is also larger. Therefore, the larger the value of the characterization slope value is, the incorrect wearing of the wearable device and poor wearing tightness are indicated, and the smaller the value of the characterization slope value is, the correct wearing of the wearable device and good wearing tightness are indicated. The preset mapping relation is formulated corresponding to the characterization slope value and the wearing tightness, so that the wearing tightness can be standardized, and a more visual wearing rating result is obtained.

The preset mapping relation is used for representing the corresponding relation between different value ranges corresponding to the characterization slope value and the wearing rating result. The higher the wearing rating result is, the smaller the extremum difference of the value range corresponding to the characterization slope value is, and the extremum difference is the difference between the maximum acceptable value and the minimum acceptable value of the value range. The higher the wearing rating result is, the better the wearing tightness of the wearable equipment is, the smaller the extreme value difference of the corresponding value range is, so that more accurate grading can be carried out when the wearable equipment is correctly worn, the more accurate wearing tightness result is obtained, the higher wearing requirement experience of a user is met, and the better tone quality effect is obtained.

Specifically, the wearing rating result may be set to various levels, for example, may be classified according to the difference in wearing tightness of the wearable device, may be set to 3 levels, 4 levels, 6 levels, or the like. The wearing rating results of the embodiment are provided with 6 levels, namely, from good to bad, the level is "S", "A+", "A", "B", "C" and "F", when the time interval for acquiring the air pressure value is 10ms, the characterization slope value corresponding to the level "S" is 0-50Pa/10ms, the characterization slope value corresponding to the level "A+" is 50-200Pa/10ms, the characterization slope value corresponding to the level "A" is 200-500Pa/10ms, the characterization slope value corresponding to the level "B" is 500-800Pa/10ms, the characterization slope value corresponding to the level "C" is 800-1200Pa/10ms, and the characterization slope value corresponding to the level "F" is more than 1200Pa/10ms. Wherein, the levels "S", "a+", "a", "B" and "C" mean that the wearable device is worn correctly, and the level "F" means "Fail", indicating that the wearable device is worn incorrectly.

The change of the air pressure slope in the auditory canal after the wearable equipment is worn is calculated, and the air pressure change in the auditory canal can be further reflected by grading the wearing rating result, so that whether the wearable equipment is worn correctly or not can be reflected, and the subsequent leakage condition after the wearable equipment is worn can be continuously detected.

In other embodiments, the wearing rating result process described in the steps S400 to S600 may be to determine tightness of wearing of the wearable device by using a pressure drop period of the air pressure in the ear canal from the first pressure peak value to the standard pressure threshold value. If the air pressure drop duration is longer, the wearing tightness of the wearable equipment is better, and if the air pressure drop duration is shorter, the wearing tightness of the wearable equipment is poorer.

Specifically, after the air pressure value in the auditory canal obtains the first air pressure peak value, continuing to detect the air pressure value in the auditory canal, judging whether the air pressure value is equal to the standard air pressure threshold value, if so, calculating the air pressure descending time between the acquisition time of the first air pressure peak value and the acquisition time of the standard air pressure threshold value, and further determining the wearing rating result matched with the air pressure descending time. The wearing rating results matched with the air pressure decreasing duration can grade the time length of the air pressure decreasing duration according to the wearing tightness from excellent to poor, and then the air pressure decreasing duration obtained by wearing the wearable equipment each time is matched and graded with the matched wearing rating results to determine the wearing rating results.

Of course, the determination of the wear rating result described in steps S400-S600 above may be considered as a determination of the level of wear tightness result. Thus, as shown in fig. 5, the level of the wearing tightness result may be determined by determining the corresponding level of the wearing tightness result, that is, determining which level of the wearing tightness result is the wearing tightness result after the above-mentioned judging air pressure peak value is greater than the preset air pressure threshold value or is within the preset air pressure range to obtain that the wearing tightness result is correctly worn.

In summary, the situation that the wearable device can cause the air pressure in the auditory canal to change after being worn on the ear is utilized, the air pressure in the ear when the wearable device is worn is detected by arranging the air pressure detecting piece 180 in the wearable device, and the air pressure value is further processed, so that the wearing tightness result of the wearable device is determined by the air pressure value, the wearing tightness result can be obtained rapidly and accurately, the wearing tightness detection is more objective, the user can be not required to subjectively judge the wearing tightness, and the effectiveness of the wearing tightness result is further improved.

The foregoing is only examples of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims

1. A method of wear closure detection, for application to a wearable device that is wearable on an ear, the method comprising:

comparing the first air pressure peak value with a preset air pressure threshold value or a preset air pressure range matched with the user to obtain a comparison result; wherein the preset air pressure threshold value or the preset air pressure range is calculated by a machine learning algorithm based on a plurality of second air pressure peaks measured by the user;

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

before comparing the first air pressure peak value with the preset air pressure threshold value or the preset air pressure range matched with the user to obtain a comparison result, the method further comprises the following steps:

acquiring the plurality of second air pressure peaks from a first preset number of second air pressure peaks measured according to the user;

And carrying out averaging treatment on the acquired plurality of second air pressure peaks to obtain the preset air pressure threshold value or the preset air pressure range.

3. The method of claim 1, wherein the step of determining the position of the substrate comprises,

after the step of taking the maximum value of the plurality of air pressure values as the first air pressure peak value and before the step of comparing, further comprising:

storing the first air pressure peak value in a memory of the wearable device as the second air pressure peak value with the latest time, and deleting the second air pressure peak value with the earliest time stored in the memory.

4. The method of claim 2, wherein the step of determining the position of the substrate comprises,

the step of performing an averaging process on the acquired plurality of second air pressure peaks to obtain the preset air pressure threshold value or the preset air pressure range includes:

performing root mean square calculation on the acquired plurality of second air pressure peaks to obtain a first root mean square value;

taking the first root mean square value as the preset air pressure threshold value; or calculating the first root mean square value by using a preset deviation proportion to obtain the preset air pressure range.

5. The method of claim 1, wherein the step of determining the position of the substrate comprises,

The determining a wearing tightness result corresponding to the comparison result comprises:

if the first air pressure peak value is smaller than the preset air pressure threshold value or the first air pressure peak value is not in the preset air pressure range, determining that the wearing tightness result is a wearing error;

and if the first air pressure peak value is greater than or equal to the preset air pressure threshold value or the first air pressure peak value is in the preset pressure range, determining that the wearing tightness result is correct.

6. The method as recited in claim 1, further comprising:

when the current air pressure value detected by the air pressure detecting piece reaches a preset standard air pressure threshold value, acquiring a plurality of air pressure values which are acquired at intervals according to time sequence and are in a time period from the first air pressure peak value to the current air pressure value;

calculating a slope value between every two adjacent air pressure values, wherein the slope value is used for representing air pressure change, so as to obtain a plurality of slope values;

calculating a characteristic slope value by using the slope values, and obtaining a matched wearing rating result by using the characteristic slope value.

7. The method of claim 6, wherein the step of providing the first layer comprises,

Calculating a characteristic slope value by using a plurality of slope values, and further obtaining a matched wearing rating result by using the characteristic slope value, wherein the method comprises the following steps of:

performing root mean square calculation on the slope values to obtain a second root mean square value, and taking the second root mean square value as the characterization slope value;

matching the characterization slope value with the corresponding wearing rating result in a preset mapping relation; the preset mapping relation is used for representing the corresponding relation between the representation slope value and the wearing rating result.

8. The method of claim 7, wherein the step of determining the position of the probe is performed,

the preset mapping relation is used for representing the corresponding relation between different value ranges corresponding to the representation slope value and the wearing rating result; the higher the wearing rating result is, the smaller the extremum difference of the value range corresponding to the characterization slope value is, and the extremum difference is the difference between the maximum and minimum available values of the value range.

9. The method of claim 1, wherein the step of determining the position of the substrate comprises,

when the current air pressure value is detected to reach a preset standard air pressure threshold value by the air pressure detection part, calculating the air pressure descending time length between the acquisition time of the first air pressure peak value and the acquisition time of the current air pressure value;

And determining the wearing rating result matched with the air pressure drop duration by using a mapping table of the preset air pressure drop duration and the wearing rating result.

10. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the air pressure detection part is an air pressure sensor; or,

the air pressure detection part is an MEMS microphone; the detecting, by the air pressure detecting element, a plurality of air pressure values in the ear canal in a first preset time period includes:

acquiring an electric signal representing the change of the air pressure in the auditory canal in the first preset time period through the MEMS microphone;

and analyzing the frequency response of the electric signal to obtain the plurality of air pressure values.

11. A bluetooth headset, comprising:

a Bluetooth chip;

the air pressure detection piece is coupled with the Bluetooth chip and is used for detecting a first air pressure peak value in an auditory canal within a first preset time period when the Bluetooth earphone is worn on the ear of a user;

memory storing a computer program executable by the bluetooth chip to implement the method according to any of claims 1-10.

12. The Bluetooth headset of claim 11, wherein the Bluetooth headset is configured to receive the Bluetooth headset,

the Bluetooth headset further comprises a sound nozzle, and the air pressure detection piece is arranged in the sound nozzle; the air pressure detection piece is an air pressure sensor or an MEMS microphone.