Earbud device equipped with biosignal sensor

Abstract

A control unit of an earbud device equipped with a biosignal sensor of the present invention is configured to perform the steps of: determining the current wearing state information related to the current wearing state of the housing on the basis of sensing information from the wearing state sensor; determining an operation profile of the biosignal sensor on the basis of the current wearing state information; and controlling the operation of the biosignal sensor on the basis of the determined operation profile.

Description

Earbud device equipped with a biosignal sensor

[0001] The present invention relates to a technology for processing sensing information of a wearable state sensor and a biosignal sensor, and for controlling the operation of the biosignal sensor.

[0002] With the recent advancement of wearable devices, the demand for miniaturized healthcare devices, such as earbuds, is surging. These devices have the advantage of being able to detect various biosignals while closely adhering to the wearer's body, and technology utilizing PPG sensors to measure heart rate, blood flow, and other parameters in real time is receiving particular attention. This functionality is useful for more accurately monitoring the wearer's health status and providing feedback on health management when necessary.

[0003] However, existing earbud devices have the disadvantage of making it difficult to ensure measurement reliability because the accuracy of biosignal measurements varies significantly depending on the wearing condition.

[0004] Therefore, there is an increasing demand for earbud devices that can reliably measure biosignals while adapting to the wearing condition.

[0005] The purpose of the present invention is to determine current wearing state information related to the current wearing state of a housing based on sensing information of a wearing state sensor, and to determine the operation profile of a biosignal sensor based on the current wearing state information.

[0006] The purpose of the present invention is to control the operation of a biosignal sensor based on a determined operation profile.

[0007] The earbud device equipped with a biosignal sensor according to the present invention is an earbud device that is worn in the external auditory canal of a wearer, comprising: a housing having at least a portion that is worn in the external auditory canal of the wearer, forming an internal space, and including a window that transmits light; a speaker unit that is accommodated in the internal space and outputs sound; a wear state sensor that detects the wear state of the housing; a biosignal sensor located inside the window in the internal space and detecting the wearer's biosignal; and a control unit that processes sensing information of the wear state sensor and the biosignal sensor and controls the operation of the biosignal sensor, wherein the control unit comprises the step of determining current wear state information related to the current wear state of the housing based on the sensing information of the wear state sensor.

[0008] Based on the above current wearing status information, the method is configured to perform the steps of determining the operation profile of the biosignal sensor and controlling the operation of the biosignal sensor based on the determined operation profile.

[0009] In one embodiment of the present invention, the step of determining the operation profile is,

[0010] Based on a database containing information on recommendation profiles corresponding to multiple wearing state information, the method may include the step of identifying a recommendation profile corresponding to the current wearing state information and the step of determining the recommendation profile as the operation profile.

[0011] In one embodiment of the present invention, the control unit may be configured to further perform the steps of: controlling the biosignal sensor to operate according to a plurality of test profiles, which is performed prior to the step of determining the operation profile; determining one of the plurality of test profiles as a recommended profile corresponding to the current wearing status information based on the sensing information of the biosignal sensor that operated according to the plurality of test profiles; and creating or updating the database based on the information determined in the step of determining the recommended profile.

[0012] In one embodiment of the present invention, the control unit may be configured to further perform the step of deleting the existing created or updated database when it obtains a request for initialization of the database.

[0013] In one embodiment of the present invention, the step of determining the operation profile may further include the step of receiving the database from a terminal connected to the earbud device via wireless communication.

[0014] In one embodiment of the present invention, the step of determining the operation profile may further include, prior to the step of receiving the database, a step of confirming the wearer's external auditory canal characteristic information based on the current wearing state information, and a step of transmitting the external auditory canal characteristic information to the terminal and requesting a database corresponding to the external auditory canal characteristic information.

[0015] In one embodiment of the present invention, the step of determining the operation profile may further include, prior to the step of receiving the database, a step of verifying identification information for the wearer based on the current wearing status information, a step of transmitting the identification information to the terminal, and a step of requesting a database corresponding to the identification information.

[0016] In one embodiment of the present invention, the control unit further includes the step of confirming sound source characteristic information related to the sound source output by the speaker unit, and in the step of determining the operation profile, the control unit can determine the operation profile of the biosignal sensor based on the current wearing state information and the sound source characteristic information.

[0017] In one embodiment of the present invention, the inner surface of the window is formed as a curved surface, and

[0018] The above biosignal sensor comprises a light-emitting layer formed of a flexible material and a light-receiving layer formed of a flexible material, at least one of the light-emitting layer and the light-receiving layer is formed as a curved surface corresponding to the curved shape of the inner surface, and the operation profile may be related to the wavelength band and light intensity of the light emitted by the light-emitting layer.

[0019] In one embodiment of the present invention, the operation profile may be related to the position and irradiation direction at which the light emitted by the light-emitting layer emits light.

[0020] The present invention has the advantage of determining current wearing state information related to the current wearing state of the housing based on sensing information of a wearing state sensor, and determining the operation profile of a biosignal sensor based on the current wearing state information.

[0021] The present invention has the advantage of controlling the operation of a biosignal sensor based on a determined operation profile.

[0022] FIG. 1 is a block diagram illustrating the connection relationship between an earbud device and a terminal according to an embodiment of the present invention.

[0023] FIG. 2 is a perspective view of an earbud device according to one embodiment of the present invention.

[0024] FIG. 3 is a cross-sectional view of an earbud device according to an embodiment of the present invention.

[0025] FIG. 4 is a perspective view of a biosignal sensor according to one embodiment of the present invention.

[0026] FIG. 5 is a flowchart relating to the operation of a control unit according to an embodiment of the present invention.

[0027] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are assigned the same reference number, and redundant descriptions thereof will be omitted. Furthermore, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description will be omitted.

[0028] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0029] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0030] In this application, each step described may be performed regardless of the order listed, except where it must be performed in the order listed by a particular causal relationship.

[0031] In this application, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0032]

[0033] The present invention will be described below with reference to the attached drawings.

[0034] FIG. 1 is a block diagram illustrating the connection relationship between an earbud device and a terminal according to an embodiment of the present invention. FIG. 2 is a perspective view of an earbud device according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of an earbud device according to an embodiment of the present invention.

[0035] Referring to FIGS. 1 to 3, an earbud device according to one embodiment of the present invention will be described.

[0036] The housing (100) is a component corresponding to the outer cover of the earbud device. The housing (100) forms the internal space of the earbud and is designed to be in close contact with the external auditory canal when worn by a user. Additionally, the housing (100) may include a window (110) that transmits light, through which light generated from the light-emitting part (410) of the biosignal sensor (400) is irradiated onto the wearer's skin, and reflected light is detected. The housing (100) may be formed of a specific material to ensure the mechanical strength of the earbud while increasing the accuracy of biosignal measurement.

[0037] The speaker unit (200) is a component included in the earbud device, is housed in an internal space, and performs the function of outputting sound to the wearer's external auditory canal. The speaker unit (200) receives sound source information and plays voice or music, and can provide auditory feedback to the user. The speaker unit (200) can receive sound source data transmitted from the terminal (600) via wireless communication (e.g., Bluetooth) and output it. The speaker unit (200) may include a high-quality driver to ensure sound quality and may implement an active noise canceling (ANC) function to block or reduce external noise.

[0038] The wearing state sensor (300) refers to a sensor that performs the function of detecting the state in which the earbud device is worn in the user's external auditory canal. The wearing state sensor (300) may be composed of an infrared sensor or a capacitive sensor, and can determine whether the earbud is worn by emitting infrared light and detecting a signal reflected from the user's skin. The wearing state sensor (300) can provide specific wearing state information to the control unit (500), such as whether the earbud is in close contact with the external auditory canal, is partially separated, or is deeply inserted. Through this, the control unit (500) can appropriately control the operation mode of the earbud.

[0039] The biosignal sensor (400) is a sensor for detecting the wearer's biosignal and may include an optical sensor such as a PPG sensor. The biosignal sensor (400) can measure biosignals such as heart rate by irradiating light generated from a light-emitting layer onto the wearer's skin through a light-transmitting window (110) formed in the housing (100) and detecting light reflected through a light-receiving layer. The biosignal sensor (400) is formed of a flexible material and can be in close contact with the inner curved surface of the housing (100), and can be deformed according to the wearing state.

[0040] The biosignal sensor (400) may be formed in a stacked form of a light-emitting layer (410) and a light-receiving layer (420). The light-emitting layer (410) and the light-receiving layer (420) may be formed from a flexible substrate. The light-emitting layer (410) and the light-receiving layer (420) may be deformed into a curved shape corresponding to the inner surface of the window (110) and may be in close contact with the inner surface of the window (110).

[0041] In some cases, a light-transmitting adhesive may be applied between the light-emitting layer (410) and the inner surface of the window (110) to improve adhesion. Additionally, a lens surface in the shape of a concave, convex, or Fresnel lens may be formed on the inner surface of the window (110). Since the outer surface of the window (110) corresponds to the outside of the earbud device and is the part that comes into contact with the wearer's skin, it is necessary for the outer surface of the window (110) to have a curved shape that connects to the surrounding housing (100). However, to reinforce the optical performance of the biosignal sensor (400), a lens surface may be formed on the inner surface of the window (110) so that light emitted or received by the biosignal sensor (400) may be refracted.

[0042] The wearing state sensor (300) and the biosignal sensor (400) may be positioned apart from the housing (110) of the earbud device. Both the wearing state sensor (300) and the biosignal sensor (400) sense information related to the wearer's skin, but can sense different parts of the wearer's skin.

[0043] The control unit (500) is a control device that controls the operation of each component of the earbud device and performs the role of processing the wearing state and biosignal data. Based on information obtained from the wearing state sensor (300), the control unit (500) determines whether the earbud is worn and the specific wearing state, and accordingly, can set the operation profile of the biosignal sensor (400). For example, if the earbud is worn deeply, the biosignal sensor (400) can be controlled to operate in the first profile, and if it is worn shallowly, it can be controlled to operate in the second profile. The control unit (500) can also process commands received from the user through communication with the terminal (600) or transmit sensor data to the terminal to provide it to the user.

[0044] The terminal (600) is a device connected to the earbud device via wireless communication and may be a smartphone, tablet, or other wearable device. The terminal (600) can transmit sound source information to the earbud device via a network or control various functions of the earbud device. For example, the terminal (600) can be connected to the earbud device using short-range wireless communication such as Bluetooth and transmit sound source information to the speaker unit (200) to provide sound to the user.

[0045] Additionally, the terminal (600) receives data detected from the biosignal sensor (400) of the earbud device and, based on this, can monitor the wearer's health status or provide user-customized services. The terminal (600) can receive wearing status information from the earbud device to help set the operation mode of the earbud device, determine a suitable operation profile according to the characteristics of the wearer's external auditory canal, or manage a database.

[0046] FIG. 4 is a perspective view of a biosignal sensor according to one embodiment of the present invention.

[0047] FIG. 4 is a perspective view of the biosignal sensor (400) illustrated in FIG. 3. The biosignal sensor (400) may be formed in a stacked form of a light-emitting layer (410) and a light-receiving layer (420). The light-emitting layer (410) and the light-receiving layer (420) may be formed from a flexible substrate. The light-emitting layer (410) and the light-receiving layer (420) may be deformed into a curved shape corresponding to the inner surface of the window (110) and may be in close contact with the inner surface of the window (110).

[0048] A support member (430) may be located below the light-emitting layer (410) and the light-receiving layer (420). The upper surface of the support member (430) may also be formed into a curved surface corresponding to the inner surface. Accordingly, the light-emitting layer (410) and the light-receiving layer (420) can be deformed into an appropriate shape between the window (110) and the support member (430) and adhere to the inner surface of the window (110).

[0049] In some cases, a transparent adhesive (not shown) may be applied between the light-emitting layer (410) and the inner surface of the window (110) to increase adhesion while maintaining transparency.

[0050] The wavelength band and intensity of the light emitted by this light-emitting layer (410) can be controlled by the control unit (500). Additionally, the region of light emitted by the light-emitting layer (410) can be controlled by the control unit (500). That is, only a specific part of the light-emitting region of the light-emitting layer (410) may be selectively emitted. The operation profile of the biosignal sensor (400) can be changed by controlling the wavelength band, intensity, and region of light emitted by this light-emitting layer (410).

[0051] The biosignal sensor (400) can be connected to a control unit (500) through a plurality of connection boards. A first connection board (415) can be connected to a plurality of signal terminals extending from a light-emitting layer (410), and a second connection board (425) can be connected to a plurality of signal terminals extending from a light-receiving layer (420). These first and second connection boards (415, 425) can be connected again to a single integrated connection board (430) and connected to a control unit (500).

[0052]

[0053] FIG. 5 is a flowchart regarding the operation of a control unit according to an embodiment of the present invention.

[0054] In step (510a), the control unit (500) determines current wearing state information related to the current wearing state of the housing (100) based on the sensing information of the wearing state sensor (300).

[0055] The wearing state sensor (300) detects the degree of contact with the user's external auditory canal, and the control unit (500) determines the exact wearing state of the earbud through this.

[0056] For example, it is possible to distinguish whether the earbud is inserted deeply into the external auditory canal and is in a tight fit, or whether it is loosely worn with a gap from the external auditory canal. Additionally, through the detection information of the wearing state sensor (300), it is possible to determine whether the earbud is tilted to the left or right or is not worn in the correct direction. In some cases, it is also possible to determine whether the earbud is not completely in contact with the wearer's external auditory canal or if the wearing state is unstable.

[0057]

[0058] In step (520a), the control unit (500) controls the biosignal sensor (400) to operate according to a plurality of test profiles.

[0059] Specifically, the control unit (500) can adjust the operation method of the light-emitting layer and the light-receiving layer of the biosignal sensor (400) according to each test profile so that biosignals can be detected under various measurement conditions.

[0060] For example, by adjusting the light intensity and wavelength in multiple test profiles, an appropriate operation profile can be searched according to the distance between the window (110) and the skin to be detected, skin color, capillary distribution of the skin to be detected, etc.

[0061]

[0062] In step (530a), the control unit (500) determines one of the plurality of test profiles as a recommended profile corresponding to the current wearing status information based on the sensing information of the biosignal sensor (400) that operated according to the plurality of test profiles.

[0063] The control unit (500) analyzes the quality of the biosignals measured according to each test profile and can select the profile that can produce the most stable measurement results as the recommended profile. For example, if a specific test profile provides the highest signal-to-noise ratio (SNR) when the wearing state is in a deep, close fit, that test profile can be determined as the recommended profile.

[0064] For example, if a specific test profile effectively detects reflected light generated according to the shape of the external auditory canal and demonstrates high signal accuracy, it can be selected as the recommended profile. In some cases, the recommended profile may be determined differently based on the user's physical characteristics, wearing status, or previously accumulated sensing data.

[0065]

[0066] In step (540a), the control unit (500) creates or updates a database based on the information determined in the step of determining the recommendation profile.

[0067] The control unit (500) can continuously manage the optimal motion profile for the user's wearing status by storing data related to the recommendation profile in a database or updating existing data.

[0068] For example, if a recommended profile consistently demonstrates high signal accuracy under a specific wearing condition, that profile can be recorded in a database and made available for future use under the same wearing condition.

[0069] For example, there may be cases where new recommendation profile information is added to the database to reflect new wearing conditions or measurement conditions.

[0070] Since the shape of the external auditory canal, skin color, and distribution of capillaries vary by wearer, a database containing personalized recommendation profiles based on specific wearing conditions can be generated.

[0071]

[0072] In step (550a), when the control unit (500) obtains a request for initialization of the database,

[0073] Deletes existing databases that have been created or updated.

[0074] The control unit (500) receives an initialization request through the interface of the terminal (600) or earbud device, and can restore the initial state by deleting all data in the database in accordance with the request.

[0075] For example, if a user selects the "Data Reset" button in the settings menu of the earbud device or requests a reset via a voice command, the control unit (500) can detect this and delete all recommendation profiles and usage history data stored in the database. As another example, a reset may be performed when the database needs to be reconfigured in a new environment after a software update of the earbuds. In some cases, the database may be reset for specific security reasons or when a system reset is required.

[0076]

[0077] In step (560a), the control unit (500) determines the operation profile of the biosignal sensor (400) based on the current wearing status information.

[0078] The control unit (500) can adjust the operation method of the light-emitting layer (410) and the light-receiving layer (420) of the biosignal sensor (400) by analyzing the wear state information obtained from the wear state sensor (300).

[0079] For example, a profile can be selected that reduces the light intensity of the light-emitting layer (410) when the earbud is deeply inserted and increases the light intensity when worn shallowly to increase the signal detection rate. Additionally, even when the earbud is deeply inserted, a profile corresponding to an optimized light intensity and wavelength band can be selected according to the wearer's skin color and capillary distribution.

[0080] In determining the operation profile, the control unit (500) can receive a database from a terminal (600) connected to the earbud device via wireless communication.

[0081] The control unit (500) is connected to the terminal (600) using wireless communication such as Bluetooth or Wi-Fi, and can request and receive a database necessary for determining the motion profile. For example, the control unit (500) can receive a user-customized profile database stored in the terminal (600) and, based on this, determine a motion profile optimized for the user's wearing condition. Alternatively, the latest recommended profile data can be downloaded from the terminal (600) connected to the cloud server and transmitted to the control unit (500) to apply a profile tailored to the user's operating environment.

[0082] Before the step of receiving the database, the control unit (500) can check the wearer's external auditory canal characteristic information based on the current wearing status information, transmit the external auditory canal characteristic information to the terminal (500), and request a database corresponding to the external auditory canal characteristic information.

[0083] Specifically, the control unit (500) can analyze data obtained from the wearing state sensor (300) to identify external auditory canal characteristic information, such as the shape of the external auditory canal, the state of contact, and surface characteristics. For example, for cases where the wearer's external auditory canal is deep and flat, or where it is uneven and shallow, the control unit (500) can transmit this to the terminal (600) and request a database containing a motion profile optimized for the corresponding characteristics. Alternatively, the control unit (500) may detect the reflective characteristics of the wearer's external auditory canal skin and request a profile suitable for an optical sensor.

[0084] Before the step of receiving the database, the control unit (500) can verify identification information for the wearer based on the current wearing status information, transmit the identification information to the terminal (500), and request the database corresponding to the identification information.

[0085] For example, an earbud device can identify a specific user based on characteristics such as the structure of the user's ear canal or wearing habits, and request motion profile data tailored to that user. Another example could be a method that distinguishes users based on their voice signals or earbud wearing patterns, and requests a customized database for that user.

[0086] Alternatively, if multiple users share and use the same earbud, the control unit (500) can identify user identification information based on each user's external auditory canal characteristics or wearing status and transmit it to the terminal (600) to request a database tailored to each user. For example, when a parent and a child use the same earbud, the control unit (500) can analyze sensor data based on the wearing status to distinguish between the parent and the child and request a database from the terminal (600) that includes a motion profile suitable for the corresponding user.

[0087] In addition, depending on the case, the wearer can be distinguished based on which terminal the earbud device is connected to. For example, if the earbud device is connected to a first terminal, it can be determined that the first wearer is wearing the earbud, and if it is connected to a second terminal, it can be determined that the second wearer is wearing the earbud.

[0088] The control unit (500) can determine the operation profile of the biosignal sensor (400) based on the current wearing state information and the sound source characteristic information in the step of checking sound source characteristic information related to the sound source output by the speaker unit (200) and determining the operation profile.

[0089] For example, the frequency band, volume level, genre, etc. of the sound source can be analyzed, and an optimal operation profile of the biosignal sensor (400) can be set according to these characteristics. Specifically, when the frequency of the sound source is low and the volume is high, the detection cycle of the biosignal sensor (400) can be adjusted to select an operation profile that senses biosignals at a more frequent cycle. As another example, when the sound source is relaxing classical music, an operation profile can be set that reduces the light intensity of the biosignal sensor (400) to save energy and minimizes the leakage of light from the light-emitting part to the outside of the wearer's ear canal.

[0090] Here, the audio information may be information about individual music being played, or information about a playlist containing multiple songs set by the wearer.

[0091] The operation profile determined by the control unit (500) may be related to the wavelength band and intensity of light emitted by the light-emitting layer (410) included in the biosignal sensor (400).

[0092] Specifically, the control unit (500) can set an operation profile to increase the accuracy of biosignal measurement by adjusting the wavelength band and intensity of light emitted by the light-emitting layer (410) according to the wearer's current state or external auditory canal characteristics. For example, if the skin color or the thickness of the external auditory canal is thick, a profile can be set to increase the intensity of light emitted by the light-emitting layer (410) or to increase the light transmittance by widening the wavelength band. As another example, when measuring biosignals in a stable state, a profile can be determined to save energy by narrowing the wavelength band and reducing the light intensity.

[0093] Alternatively, the control unit (500) can determine an operation profile based on the position and direction of irradiation of the light emitted by the light-emitting layer (410).

[0094] For example, if the earbud is inserted deeply, the direction of light irradiation from the light-emitting layer (410) can be adjusted to be directed deep into the ear canal to increase the depth of signal detection. As another example, if the earbud is not in complete contact with the ear canal, the position of the light-emitting light can be adjusted so that reflected light is received at an optimal position.

[0095]

[0096] In step (561a), the control unit (500) identifies a recommendation profile corresponding to the current wearing status information based on a database containing information about recommendation profiles corresponding to a plurality of wearing status information.

[0097] The control unit (500) can find the most suitable recommendation profile for the current wearing state by comparing the current wearing state information with existing wearing state information stored in the database.

[0098] For example, if the earbuds are worn deeply in the ear canal, a motion profile optimized for this wearing condition can be retrieved from the database and identified as the recommended profile. As another example, if the wearing condition is unstable, a profile that demonstrated high signal accuracy in similar past situations can be found in the database and determined as the recommended profile. In some cases, the database can recommend a customized profile tailored to the individual user's characteristics based on the user's previous wearing history and biosignal measurement results.

[0099]

[0100] In step (563a), the control unit (500) determines the recommended profile as the operation profile.

[0101] The control unit (500) can set a recommended profile identified in the database as an operation profile to be performed by the biosignal sensor (400) according to the current wearing state. For example, if a first recommended profile is determined to be the optimal setting for biosignal measurement based on the wearing state information, the control unit (500) can set it as an operation profile so that the biosignal sensor (400) operates according to that setting. Alternatively, if a specific recommended profile is optimized for reflected light generated in the external auditory canal, the control unit (500) can determine that profile as an operation profile to improve the accuracy of signal detection.

[0102]

[0103] In step (570a), the control unit (500) performs the step of controlling the operation of the biosignal sensor (400) based on the determined operation profile.

[0104] The control unit (500) can set the intensity and wavelength band of light generated from the light-emitting layer (410) of the biosignal sensor (400) and the detection period of the light-receiving layer (420) according to the operation profile to enable optimal biosignal measurement.

[0105] For example, when a first operation profile is set, the control unit (500) can lower the intensity of the light-emitting layer (410) and set it so that light of the first wavelength band is emitted. Alternatively, when a second operation profile is set, the control unit can increase the intensity of the light-emitting layer (410) and control it so that light of the second wavelength band is emitted.

[0106] Additionally, in some cases, if the control unit determines that the sensing of biosignals is poor even while operating with a determined motion profile, it may re-evaluate the wearing status information and re-determine the motion profile information. If a more appropriate motion profile for a specific wearing status is identified through such changes, the database may be updated.

[0107]

[0108] The technical features disclosed in each embodiment of the present invention are not limited to that embodiment only, and as long as they are not mutually incompatible, the technical features disclosed in each embodiment may be combined and applied to different embodiments.

[0109] Therefore, in each embodiment, the technical features are described primarily, but as long as the technical features are not mutually incompatible, they may be combined and applied together.

[0110] The present invention is not limited to the embodiments described above and the attached drawings, and various modifications and variations may be possible from the perspective of those skilled in the art to which the present invention belongs. Accordingly, the scope of the present invention should be defined not only by the claims of this specification but also by equivalents thereof.

Claims

1. An earbud device worn in the external auditory canal of a wearer, A housing comprising at least a portion that is worn in the external auditory canal of the wearer, forms an internal space, and includes a window that transmits light; A speaker unit accommodated in the above internal space and outputting sound; A wear state sensor that detects the wear state of the above housing; A biosignal sensor located on the inner side of the window within the above internal space and detecting the wearer's biosignal; and It includes a control unit that processes sensing information of the above-mentioned wear state sensor and the above-mentioned biosignal sensor and controls the operation of the above-mentioned biosignal sensor, and The above control unit is, A step of determining current wearing state information related to the current wearing state of the housing based on sensing information of the above wearing state sensor; and A step of determining the operation profile of the biosignal sensor based on the above current wearing status information; and A method configured to perform the step of controlling the operation of the biosignal sensor based on the above-determined operation profile. Earbud device equipped with a biosignal sensor.

2. In Paragraph 1, The step of determining the above operation profile is, A step of identifying a recommendation profile corresponding to the current wearing status information based on a database containing information on recommendation profiles corresponding to multiple wearing status information; and A step comprising determining the above recommended profile as the above action profile Earbud device equipped with a biosignal sensor.

3. In Paragraph 2, The above control unit is, Performed prior to the step of determining the above operation profile, A step of controlling the above biosignal sensor to operate according to a plurality of test profiles; A step of determining one of the plurality of test profiles as a recommended profile corresponding to the current wearing state information based on the sensing information of the biosignal sensor operated according to the plurality of test profiles; and Based on the information determined in the step of determining the above recommendation profile, configured to further perform the step of creating or updating the above database Earbud device equipped with a biosignal sensor.

4. In Paragraph 3, The above control unit is, When a request for initialization of the above database is obtained, the step of deleting the existing or updated above database is further performed. Earbud device equipped with a biosignal sensor.

5. In Paragraph 2, The step of determining the above operation profile is, The above earbud device further includes the step of receiving the database from a terminal connected via wireless communication. Earbud device equipped with a biosignal sensor.

6. In Paragraph 5, The step of determining the above operation profile is, Performed prior to the step of receiving the above database, A step of confirming the external auditory canal characteristic information of the wearer based on the above current wearing status information; and The method further includes the step of transmitting the above external auditory canal characteristic information to the terminal and requesting a database corresponding to the above external auditory canal characteristic information. Earbud device equipped with a biosignal sensor.

7. In Paragraph 5, The step of determining the above operation profile is, Performed prior to the step of receiving the above database, A step of verifying identification information for the wearer based on the above current wearing status information; The method further includes the step of transmitting the identification information to the terminal and requesting a database corresponding to the identification information. Earbud device equipped with a biosignal sensor.

8. In Paragraph 1, The above control unit is, The method further includes a step of verifying sound source characteristic information related to the sound source output by the above speaker unit, and In the step of determining the above operation profile, the control unit determines the operation profile of the biosignal sensor based on the current wearing state information and the sound source characteristic information. Earbud device equipped with a biosignal sensor.

9. In Paragraph 1, The inner surface of the above window is formed as a curved surface, and The above biosignal sensor is, A light-emitting layer formed of a flexible material; and It includes a light-receiving layer formed of a flexible material, and At least one of the light-emitting layer and the light-receiving layer is formed as a curved surface corresponding to the curved shape of the inner surface, and The above operation profile is related to the wavelength band and light intensity of the light emitted by the light-emitting layer. Earbud device equipped with a biosignal sensor.

10. In Paragraph 9, The above operation profile is related to the position and irradiation direction at which the light emitted by the light-emitting layer is emitted. Earbud device equipped with a biosignal sensor.

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