Aerosol-generating device

Abstract

This aerosol-generating device comprises: a body including an insertion space for accommodating an aerosol-generating article; a heater for heating the aerosol-generating article accommodated in the insertion space; an inductive sensor for generating a sensing value corresponding to the distance from a magnetic body; and a controller electrically connected to the inductive sensor and configured to determine the degree to which the magnetic body approaches the body by comparing the sensing value with a reference value that is a reference for determination, wherein the controller calibrates the reference value with reference to the sensing value so that the reference value maintains a predetermined difference in relation to the sensing value.

Description

Aerosol generating device

[0001] Various embodiments of the present disclosure relate to an aerosol generating device, and more particularly, to an aerosol generating device capable of precise sensing through an inductive sensor.

[0002] Recently, there has been a growing demand for alternative methods that overcome the shortcomings of conventional cigarettes. For example, there is a growing demand for systems that generate aerosol by heating cigarettes or aerosol-generating materials using an aerosol generator, rather than by burning cigarettes to produce aerosol. Accordingly, research into heated aerosol generators is actively underway.

[0003] The aerosol generating device may be equipped with additional features that enhance user convenience. For example, the aerosol generating device may be equipped with a feature that detects whether the cap is attached to the aerosol generating device or whether a cigarette is inserted into the aerosol generating device.

[0004] An inductive sensor may be positioned in the aerosol generating device. The inductive sensor may generate a signal in response to the distance from the magnetic material. Accordingly, the inductive sensor may be used to detect whether a specific object containing a magnetic material approaches the inductive sensor. For example, the inductive sensor may be used to detect whether a cap is attached to the aerosol generating device or whether a cigarette is inserted into the aerosol generating device.

[0005] A signal generated from an inductive sensor may correspond to a sensing value (or sensing level) of the inductive sensor. Based on the sensing value, the control unit can determine whether a magnetic body has approached the inductive sensor, and further, determine how close the magnetic body is to the inductive sensor. At this time, the control unit may determine based on the sensing value itself or based on the degree of change in the sensing value. In addition, the control unit may determine based on the result of comparing the sensing value of the inductive sensor with a preset reference value (or reference level).

[0006] The control unit may reference a lookup table stored in memory to make decisions. The memory may store information regarding sensing values ​​and / or reference values, along with corresponding information regarding specific events (e.g., cigarette insertion, cap removal).

[0007] Meanwhile, the sensing values ​​of inductive sensors can be affected by the surrounding environment. For example, the sensing values ​​can vary depending on ambient temperature or humidity. Furthermore, the sensing values ​​can change if a magnetic material approaches the aerosol generating device. These cases involve changes in sensing values ​​that are unintentional by the user.

[0008] Accordingly, as the sensing value changes, a problem may arise where a specific event occurs but is not determined to have occurred. Conversely, a problem may arise where an event is determined to have occurred even though it did not.

[0009] To address the above-mentioned problem, it is necessary to calibrate the changing sensing values. To calibrate the sensing values, an initial value (or initial level) against which the sensing values ​​can be compared is required. Calibrating the sensing values ​​to follow the natural initial value can resolve the above-mentioned problem.

[0010] In cases where the control unit determines whether a specific event has occurred based on the difference between the reference value and the sensed value, the above-described problem can be solved even if the reference value is corrected in response to the changing sensed value.

[0011] Embodiments provide an aerosol generating device capable of correcting a sensing value of an inductive sensor based on an initial value in a natural state or correcting a reference value based on a sensing value.

[0012] The problems to be solved through the embodiments are not limited to the problems described above, and problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the embodiments belong from this specification and the attached drawings.

[0013] An aerosol generating device according to one embodiment may include a body including an insertion space for accommodating an aerosol generating article, a heater for heating the aerosol generating article accommodated in the insertion space, an inductive sensor for generating a sensing value corresponding to a distance from a magnetic body, and a control unit electrically connected to the inductive sensor and comparing the sensing value with a reference value that serves as a reference for determination to determine the degree to which the magnetic body is close to the body, and the control unit may calibrate the reference value based on the sensing value so that the reference value maintains a predetermined difference in relation to the sensing value.

[0014] An aerosol generating device according to another embodiment may include a body including an insertion space for accommodating an aerosol generating article, a heater for heating the aerosol generating article accommodated in the insertion space, an inductive sensor for generating a sensing value corresponding to a distance from a magnetic body, and a control unit electrically connected to the inductive sensor and determining a degree of proximity of the magnetic body to the body based on the sensing value, wherein the control unit may calibrate the sensing value so that the sensing value becomes equal to a predetermined initial value.

[0015] According to the aerosol generating device according to the embodiments, precise sensing is possible without malfunction of the inductive sensor and the control unit, and the reliability of the judgment result of the control unit can be improved.

[0016] The effects of the embodiments are not limited to the effects described above, and effects not mentioned can be clearly understood by a person having ordinary skill in the art to which the embodiments belong from this specification and the attached drawings.

[0017] FIGS. 1A to 1C illustrate aerosol generating devices according to various embodiments of the present disclosure.

[0018] FIGS. 2A and 2B illustrate an aerosol generating device according to other embodiments of the present disclosure.

[0019] FIGS. 3A and 3B illustrate an aerosol generating device according to further embodiments of the present disclosure.

[0020] Figure 4 is a perspective view of an aerosol generating device according to one embodiment.

[0021] FIG. 5a is an exploded cross-sectional view of the cap and body of an aerosol generating device according to one embodiment of the present disclosure.

[0022] Figure 5b is a cross-sectional view of the cap and body of the aerosol generating device illustrated in Figure 5a.

[0023] FIG. 6 is a cross-sectional view of a cap and a body of an aerosol generating device according to another embodiment of the present disclosure.

[0024] Figures 7a and 7b are diagrams showing changes in ideal sensing values, respectively.

[0025] Figures 8a and 8b are diagrams showing changes in actual sensing values, respectively.

[0026] Figure 9a is a diagram showing the result of correcting the sensing value based on the initial value in the situation of Figure 8a.

[0027] Figure 9b is a diagram showing the result of correcting the reference value based on the sensing value in the situation of Figure 8b.

[0028] Figure 10 is a drawing showing an example of correcting a sensing value at a regular cycle in a situation where the sensing value changes periodically.

[0029] Figures 11a to 11c are diagrams showing examples of correcting a reference value at regular intervals in a situation where a sensing value changes periodically.

[0030] Figure 12a is a drawing showing an example of correcting a sensing value at regular intervals in a situation where a magnetic body approaches and then moves away from an inductive sensor.

[0031] Figure 12b is a drawing showing an example of correcting a reference value at regular intervals in a situation where a magnetic body approaches and then moves away from an inductive sensor.

[0032] Figure 13a is a drawing showing an example of correcting a sensing value after a predetermined time has passed since the start of heating of the heater.

[0033] Figure 13b is a drawing showing an example of correcting a reference value after a predetermined time has passed since the heater started heating.

[0034] Figure 14a is a drawing showing an example of correcting a sensing value at a regular cycle, but correcting the sensing value again at a regular cycle after a predetermined time has passed after the heater starts heating.

[0035] Figure 14b is a drawing showing an example of correcting the reference value at a regular cycle, but correcting the reference value at a regular cycle again after a predetermined time has passed after the heater starts heating.

[0036] Figure 15a is a drawing showing an example of correcting a sensing value at a regular cycle, and then correcting the sensing value again at a regular cycle when an aerosol generating article is inserted and then removed.

[0037] Figure 15b is a drawing showing an example of correcting the reference value at a regular interval, and then correcting the reference value again at a regular interval when inserting an aerosol generating article and then removing the aerosol generating article.

[0038] Fig. 16a is a drawing showing an example of correcting a sensing value when a situation occurs in which a magnetic body approaches and then moves away from the situation in Fig. 15a.

[0039] Figure 16b is a drawing showing an example of correcting the reference value when a situation occurs in which the magnetic body approaches and then moves away from the situation in Figure 15b.

[0040] FIG. 17 is a block diagram of an aerosol generating device according to another embodiment of the present disclosure.

[0041] The terms used in the examples are selected from widely used, current terms, taking into account the functions of the present invention. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, the applicant may arbitrarily select terms, and in such cases, their meanings will be described in detail in the description of the relevant invention. Therefore, the terms used in the present invention should be defined not simply based on their names, but based on their meanings and the overall content of the present invention.

[0042] When a part of the specification is said to "include" a component, this does not exclude other components, but rather implies the inclusion of other components, unless otherwise specifically stated. Furthermore, terms such as "-unit" and "-module" used in the specification refer to a unit that processes at least one function or operation, which may be implemented in hardware, software, or a combination of hardware and software.

[0043] As used herein, when an expression such as "at least one" precedes an array of elements, it modifies the entire array of elements, not just each individual element. For example, the expression "at least one of a, b, and c" should be interpreted to include a, b, c, or a and b, a and c, b and c, or a and b and c.

[0044] In addition, when describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present disclosure.

[0045] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0046] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0047] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0048] Below, embodiments of the present disclosure are described in detail with reference to the attached drawings so that those skilled in the art can easily implement them. Regardless of the drawing numbers, identical or similar components are assigned the same reference numerals, and redundant descriptions thereof are omitted.

[0049] The present disclosure may be implemented in a form that can be implemented in the aerosol generating devices of the various embodiments described above, or may be implemented and implemented in various different forms, and is not limited to the embodiments described herein.

[0050] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0051] FIGS. 1A to 1C illustrate aerosol generating devices according to various embodiments of the present disclosure.

[0052] Referring to FIG. 1A, an aerosol generating device (1) according to embodiments of the present disclosure may include at least one of a power source (11), a control unit (12), a sensor (13), and a heater (18). At least one of the power source (11), the control unit (12), the sensor (13), and the heater (18) may be disposed inside a body (10) of the aerosol generating device (1).

[0053] The body (10) may provide a space opened upwardly to allow a stick (S), which is an aerosol generating material, to be inserted. The space opened upwardly may be referred to as an insertion space. The insertion space may be formed by being recessed toward the interior of the body (10) to a predetermined depth so that at least a portion of the stick (S) can be inserted. The depth of the insertion space may correspond to the length of a region of the stick (S) containing the aerosol generating material and / or medium.

[0054] The lower end of the stick (S) is inserted into the inside of the body (10), and the upper end of the stick (S) can protrude outside the body (10). The user can inhale air by putting the upper end of the stick (S) exposed to the outside in his / her mouth.

[0055] The heater (18) can heat the stick (S). The heater (18) can extend upwardly in the space where the stick (S) is inserted. For example, the heater (18) can include a tubular heating element, a plate-shaped heating element, a needle-shaped heating element, or a rod-shaped heating element. The heater (18) can be inserted into the lower part of the stick (S). The heater (18) can include an electrical resistance heater and / or an induction heater.

[0056] For example, referring to FIG. 1A, the heater (18) may be a resistive heater. For example, the heater (18) may include an electrically conductive track, and the heater (18) may be heated as current flows through the electrically conductive track. The heater (18) may be electrically connected to a power source (11). The heater (18) may be directly heated by receiving current from the power source (11).

[0057] For example, the heater (18) may be a multi-heater. The heater (18) may include a first heater and a second heater. The first and second heaters may be arranged side by side along the length direction. The first and second heaters may be heated sequentially or simultaneously.

[0058] For example, referring to FIG. 1B, the aerosol generating device (1) may include an induction coil (181) surrounding a heater (18). The induction coil (181) may heat the heater (18). The heater (18) may be a susceptor, and the heater (18) may be heated by a magnetic field generated by an AC current flowing through the induction coil (181). The magnetic field may penetrate the heater (18) and generate an eddy current within the heater (18). The current may generate heat in the heater (18).

[0059] For example, referring to FIG. 1c, a susceptor (SS) may be included inside the stick (S), and the susceptor (SS) inside the stick (S) may be heated by a magnetic field generated by an AC current flowing through an induction coil (181). The susceptor (SS) may be disposed inside the stick (S) and may not be electrically connected to the aerosol generating device (1). The susceptor (SS) may be inserted into the insertion space together with the stick (S) and may be removed from the insertion space together with the stick (S). The stick (S) may be heated by the susceptor (SS) inside the stick (S). At this time, the aerosol generating device (1) may not be equipped with a heater (18).

[0060] The power source (11) can supply power to operate components of the aerosol generating device (1). The power source (11) can be referred to as a battery. The power source (11) can supply power to at least one of the control unit (12), the sensor (13), and the heater (18). When the aerosol generating device (1) includes an induction coil (181), the power source (11) can supply power to the induction coil (181).

[0061] The control unit (12) can control the overall operation of the aerosol generating device (1). The control unit can be mounted on a printed circuit board (PCB). The control unit (12) can control the operation of at least one of the power supply (11), the sensor (13), and the heater (18). The control unit (12) can control the operation of the induction coil (181). The control unit (12) can control the operation of the display, motor, etc. installed in the aerosol generating device (1). The control unit (12) can check the status of each component of the aerosol generating device (1) to determine whether the aerosol generating device (1) is in an operable state.

[0062] The control unit (12) can analyze the results detected by the sensor (13) and control the processes to be performed thereafter. For example, the control unit (12) can control the power supplied to the heater (18) so that the operation of the heater (18) is started or ended based on the results detected by the sensor (13). For example, the control unit (12) can control the amount of power supplied to the heater (18) and the time for which the power is supplied so that the heater (18) can be heated to a predetermined temperature or maintained at an appropriate temperature based on the results detected by the sensor (13).

[0063] The sensor (13) may include at least one of a temperature sensor, a puff sensor, an insertion detection sensor, and an acceleration sensor. For example, the sensor (13) may sense at least one of the temperature of the heater (18), the temperature of the power source (11), and the temperature inside and outside the body (10). For example, the sensor (13) may sense the user's puff. For example, the sensor (13) may sense whether the stick (S) is inserted into the insertion space. For example, the sensor (13) may sense the movement of the aerosol generating device (1).

[0064] FIGS. 2A and 2B illustrate an aerosol generating device according to other embodiments of the present disclosure.

[0065] At least one of the components of the aerosol generating device (1) illustrated in FIGS. 2a and 2b may be identical or similar to at least one of the components of the aerosol generating device (1) illustrated in FIGS. 1a to 1c, and any redundant description will be omitted below.

[0066] Referring to FIG. 2A, the heater (18) may extend upwardly around the space into which the stick (S) is inserted. For example, the heater (18) may be in the form of a tube having a hollow interior. The heater (18) may be positioned around the periphery of the insertion space. The heater (18) may be positioned to surround at least a portion of the insertion space. The heater (18) may heat the insertion space or the outside of the stick (S) inserted into the insertion space. The heater (18) may include an electrical resistance heater and / or an induction heater.

[0067] Referring to FIG. 2b, the aerosol generating device (1) may include an induction coil (181) surrounding a heater (18). Since the content regarding the induction coil (181) is the same as described above, a description of the induction coil (181) will be omitted.

[0068] FIGS. 3A and 3B illustrate an aerosol generating device according to further embodiments of the present disclosure.

[0069] At least one of the components of the aerosol generating device (1) illustrated in FIGS. 3a and 3b may be identical or similar to at least one of the components of the aerosol generating device (1) illustrated in FIGS. 1a to 1c, and any redundant description thereof will be omitted below.

[0070] Referring to FIG. 3a, the aerosol generating device (1) may further include a cartridge (19).

[0071] The cartridge (19) may contain an aerosol-generating substance in any one of a liquid, solid, gaseous, or gel state. The aerosol-generating substance may comprise a liquid composition. For example, the liquid composition may be a liquid comprising a tobacco-containing substance including volatile tobacco flavoring components, or may be a liquid comprising a non-tobacco substance.

[0072] For example, the liquid composition may include water, a solvent, ethanol, a plant extract, a fragrance, a flavoring agent, or a vitamin mixture. The flavoring agent may include, but is not limited to, menthol, peppermint oil, spearmint oil, and various fruit-flavored ingredients. The flavoring agent may include ingredients that can provide a variety of flavors or tastes to the user. The vitamin mixture may include, but is not limited to, a mixture of at least one of vitamin A, vitamin B, vitamin C, and vitamin E. Additionally, the liquid composition may include an aerosol-forming agent such as glycerin and propylene glycol.

[0073] The cartridge (19) may be formed integrally with the body (10) or may be detachably coupled to the body (10). For example, the cartridge (19) may be mounted on the body (10) by being inserted into the body (10). However, the present invention is not limited thereto, and may be fixed so as not to be detached by the user.

[0074] The cartridge may be mounted on the main body while containing an aerosol-generating substance inside. However, this is not limited to the above, and the aerosol-generating substance may be injected into the cartridge while the cartridge is attached to the main body.

[0075] Referring to Fig. 3a, the cartridge (19) is formed integrally with the body (10) and can communicate with the insertion space through an airflow channel (CN).

[0076] Referring to FIG. 3b, a space is formed on one side of the body (10), and at least a portion of the cartridge (19) is inserted into the space formed on one side of the body (10) so that the cartridge (19) can be mounted on the body (10). The airflow channel (CN) can be defined by a portion of the cartridge and / or a portion of the body (10), and the cartridge (19) can communicate with the insertion space through the airflow channel (CN).

[0077] Meanwhile, the aerosol generating device (1) illustrated in FIG. 3a is illustrated with components arranged in a row. The aerosol generating device (1) illustrated in FIG. 3b is illustrated with a cartridge (19) and a heater (18) arranged in parallel. However, the internal structure of the aerosol generating device (1) is not limited to that illustrated. In other words, depending on the design of the aerosol generating device (1), the arrangement of the power source (11), the control unit (12), the sensor (13), the heater (18), and the cartridge (19) may be changed.

[0078] The body (10) can be formed in a structure in which outside air can flow into the interior of the body (10) while the cartridge (19) is inserted. At this time, the outside air flowing into the body (10) can pass through the cartridge (19) and flow into the user's oral cavity.

[0079] The cartridge (19) may include a storage portion (C0) containing an aerosol generating material and / or a heater (24) for heating the aerosol generating material in the storage portion (C0). A liquid delivery means impregnating (containing) the aerosol generating material may be disposed inside the storage portion (C0). Here, the liquid delivery means may include a wick such as cotton fiber, ceramic fiber, glass fiber, porous ceramic, etc. The electrically conductive track of the heater (24) may be formed in a coil-shaped structure that winds the liquid delivery means or a structure that contacts one side of the liquid delivery means. The heater (24) may be referred to as a cartridge heater (24).

[0080] The cartridge (19) can perform the function of generating an aerosol by converting the phase of an aerosol generating substance inside the cartridge into a gas phase by operating with an electric signal or wireless signal transmitted from the body (10). In this case, the aerosol may mean a gas in a mixed state of vaporized particles and air generated from the aerosol generating substance.

[0081] An aerosol can be generated as the liquid delivery means and the liquid composition absorbed therein are heated by the cartridge heater (24). At this time, the aerosol can also be generated by heating the stick (S) by the heater (18). Tobacco material can be added to the aerosol while the aerosol generated by the cartridge heater (24) and the heater (18) passes through the stick (S), and the aerosol added with the tobacco material can be inhaled into the user's oral cavity through one end of the stick (S).

[0082] The aerosol generating device (1) may be equipped with only a cartridge heater (24) and the body (10) may not be equipped with a heater (18). In this case, the aerosol generated by the cartridge heater (24) may pass through the stick (S) and be mixed with tobacco material and inhaled into the user's mouth.

[0083] The aerosol generating device (1) may include a cap (not shown). The cap may be detachably coupled to the body (10) so as to cover at least a portion of a cartridge (19) coupled to the body (10). A stick (S) may be inserted into the body (10) through the cap.

[0084] The power source (11) can supply power to the cartridge (24) in addition to the aforementioned configuration. The control unit (12) can control the operation of the cartridge (19) in addition to the aforementioned configuration. The control unit (12) can control the power supplied to the cartridge heater (24) so ​​that the operation of the cartridge heater (24) and / or the heater (18) is started or ended based on the result detected by the sensor (13). For example, the control unit (12) can control the amount of power supplied to the cartridge heater (24) and the time for which the power is supplied so that the cartridge heater (24) can be heated to a predetermined temperature or maintained at an appropriate temperature based on the result detected by the sensor (13).

[0085] In addition to the aforementioned configuration, the sensor (13) may further include at least one of a color sensor, a cartridge detection sensor, and a cap detection sensor. For example, the sensor (13) may sense the temperature of the cartridge heater (24). For example, the sensor (13) may sense the color of a portion of the wrapper surrounding the outside of the stick (S). For example, the sensor (13) may sense whether the cartridge (19) is mounted. For example, the sensor (13) may sense whether the cap is mounted.

[0086] Meanwhile, the aerosol generating device (1) may further include general-purpose components in addition to the power source (11), control unit (12), sensor (13), heater (18), and cartridge (19). For example, as mentioned above, the aerosol generating device (1) may include a display capable of outputting visual information and / or a motor for outputting tactile information. In addition, the aerosol generating device (1) may be manufactured in a structure in which external air can be introduced or internal gas can be discharged even when the stick (S) is inserted.

[0087] Although not shown in the drawing, the aerosol generating device (1) may also be configured as a system with a separate cradle. For example, the cradle may be used to charge the power supply (11) of the aerosol generating device (1). Alternatively, the heater (18) may be heated while the cradle and the aerosol generating device (1) are combined.

[0088] The stick (S) may be similar to a typical combustion cigarette. For example, the stick (S) may be divided into a first part (S1) containing an aerosol generating substance and a second part (S2) containing a filter or the like.

[0089] The first portion (S1) may be formed as a sheet, a strand, or a tobacco sheet cut into small pieces. Furthermore, the first portion (S1) may be surrounded by a heat-conducting material. For example, the heat-conducting material may be, but is not limited to, a metal foil such as aluminum foil. The first portion (S1) may be referred to as a "medium portion" or a "tobacco rod" hereinafter.

[0090] The second portion (S2) may be a cellulose acetate filter. The second portion (S2) may be composed of at least one segment. For example, the second portion (S2) may include a first segment that cools the aerosol and a second segment that filters a predetermined component contained within the aerosol. The second portion (S2) may be referred to as a "filter rod" hereinafter.

[0091] Depending on the embodiment, the second portion (S2) of the stick (S) may also contain an aerosol generating substance. For example, an aerosol generating substance in the form of granules or capsules may be inserted into the second portion (S2).

[0092] The entire first part (S1) may be inserted into the aerosol generating device (1), and the second part (S2) may be exposed to the outside. Alternatively, only a part of the first part (S1) may be inserted into the aerosol generating device (1), or the entire first part (S1) and a part of the second part (S2) may be inserted. The user may inhale the aerosol while holding the second part (S2) in his / her mouth. At this time, the aerosol is generated as the outside air passes through the first part (S1), and the generated aerosol passes through the second part (S2) and is delivered to the user's mouth.

[0093] Figure 4 is a perspective view of an aerosol generating device according to one embodiment.

[0094] Referring to FIG. 4, an aerosol generating device (1) according to one embodiment may include a body (10) and a cap (40).

[0095] The body (10) forms the overall appearance of the aerosol generating device (1) and may include an internal space in which components of the aerosol generating device (1) can be arranged. The shape of the body (10) is not limited to that shown, and the body (10) may be formed in an overall cylindrical shape or a polygonal pillar shape.

[0096] The body (10) may include an opening through which a stick (S) may be inserted into the interior of the body (10). At least a portion of the stick (S) may be inserted or accommodated into the interior of the body (10) through the opening. In this case, the stick (S) may be used in the same sense as a cigarette or an aerosol generating article.

[0097] The body (10) may include an insertion space for accommodating a stick (S) therein. The insertion space may be formed at the upper portion of the body (10). The insertion space may be opened upward and connected to the opening.

[0098] The insertion space may have a cylindrical shape that extends vertically. At least a portion of the stick (S) may be accommodated within the body (10) through an opening at the upper side of the insertion space. In this case, the depth of the insertion space of the stick (S) may correspond to the length of the area containing the aerosol generating substance or medium in the stick (S).

[0099] The cap (40) can be detachably coupled to the body (10). The cap (40) can be coupled to the upper side of the body (10). The cap (40) can cover the upper periphery of the body (10). The cap (40) can have an insertion hole (44). The stick (S) can be inserted into the insertion hole (44). The cap (40) can include a door (45) for opening and closing the insertion hole (44). The door (45) can slide laterally to open and close the insertion hole (44).

[0100] The cap (40) may include a cap wing (42). The cap wing (42) may extend downward from both sides of the cap body (41). The cap wing (42) may be referred to as a cap grip (42).

[0101] The body (10) may include a body wing (101). The body wing (101) may extend upward from an edge of the upper portion of the body (10). The body wings (101) may be formed as a pair facing each other with the upper portion of the body (10) as the center. The body wings (101) may be formed at a position that is misaligned with the cap wing (42).

[0102] When the cap (40) is coupled to the body (10), the cap (40) can form the upper exterior of the aerosol generating device (1). When the cap (40) is coupled to the body (10), the body wing (101) can cover the side portion of the cap (40) exposed between the cap wings (42). When the cap (40) is coupled to the body (10), the cap wing (42) can cover the outer wall of the body (10).

[0103] Meanwhile, the shape of the cap (40) is not limited to that shown. The cap (40) may include various shapes that can be detachably connected to the body (10) while covering the upper periphery of the body (10).

[0104] FIG. 5a is an exploded cross-sectional view of the cap and body of an aerosol generating device according to one embodiment of the present disclosure, and FIG. 5b is a combined cross-sectional view of the cap and body of the aerosol generating device illustrated in FIG. 5a.

[0105] Referring to FIGS. 5a and 5b, an aerosol generating device (1) according to one embodiment of the present disclosure may include a body (A10), an extractor (A20), a heater assembly (A30), a cap (A40), an inductive sensor (A50), and a control unit (A60).

[0106] The body (A10) may have a pipe (A11, A12) forming a first insertion space (A14). The first insertion space (A14) may be formed at an upper portion of the body (A10). The first insertion space (A14) may be opened upward. The first insertion space (A14) may have a cylindrical shape that extends vertically. A first side wall (A11) of the pipe (A11, A12) may surround a side of the first insertion space (A14). A first flange (A12) of the pipe (A11, A12) may cover a lower portion of the first insertion space (A14).

[0107] The extractor (A20) may have a second insertion space (A24) therein. The second insertion space (A24) may be opened toward the upper side of the extractor (A20). The second insertion space (A24) may have a cylindrical shape that extends vertically. The second side wall (A21) of the extractor (A20) may surround the side of the second insertion space (A24). The second flange (A22) of the extractor (A20) may cover the lower part of the second insertion space (A24). The through hole (A23) may be formed by opening the center of the second flange (A22).

[0108] The extractor (A20) can be inserted into the first insertion space (A14). When the extractor (A20) is inserted into the first insertion space (A14), the second insertion space (A24) can be arranged inside the first insertion space (A14). The second insertion space (A24) can be opened toward the upper side of the body (A10). The diameter of the second insertion space (A24) can be smaller than the diameter of the first insertion space (A14). The first insertion space (A14) and the second insertion space (A24) can be communicated with each other through a through hole (A23).

[0109] The heater assembly (A30) can be fixed to the body (A10). The heater assembly (A30) can protrude upward from the first flange (A12) in a long manner in the first insertion space (A14). The heater assembly (A30) can pass through the through hole (A23). The upper portion of the heater assembly (A30) can be placed in the second insertion space (A24) through the through hole (A23). The heater assembly (A30) can heat the second insertion space (A24).

[0110] The heater assembly (A30) may include a heater rod (A31) and a heater (A33). The heater rod (A31) may protrude upward from the first flange (A12) toward the first insertion space (A14). The heater rod (A31) may extend vertically. The body of the heater rod (A31) may have a cylindrical shape. The upper end of the heater rod (A31) may be formed to be pointed upward.

[0111] The heater (A33) can be inserted into the hollow portion (A34) of the heater rod (A31). The heater (A33) can be fixed to the inside of the heater rod (A31). The hollow portion (A34) is open downward, but can be filled by a heater cap (A35). The heater mount (A15) can be formed by the first flange (A12) being recessed downward. The lower end of the heater rod (A31) and the heater cap (A35) can be fixed to the heater mount (A15).

[0112] The heater (A33) may be a resistive heater. When the heater (A33) is heated, the heat may pass through the heater rod (A31) to heat the second insertion space (A24). The induction coil (A13) may heat the heater (A33). The induction coil (A13) may be wound around the first side wall (A11) upwardly and downwardly and may surround the first insertion space (A14) and the heater (A33). The heater (A33) may function as a susceptor, and the heater (A33) may be heated by a magnetic field generated by an AC current flowing through the induction coil (A13). The magnetic field may pass through the heater (A33) and generate an eddy current within the heater (A33). The current may generate heat in the heater (A33). Alternatively, unlike the drawing, the heater (A33) may be directly powered and heated.

[0113] As illustrated, the heater (A33) can be inserted into the interior of the stick (S) to heat the interior of the stick (S). However, the embodiment is not limited to the shape and arrangement of the heater (A33). As another example, the heater (A33) may be a cylindrical heater that surrounds at least a portion of the stick (S) and heats the outer surface of the stick (S).

[0114] Meanwhile, the heater (A33) may be a cartridge heater (e.g., the cartridge heater (24) of FIGS. 3a and 3b). In this case, the aerosol generating article (S) may be a cartridge (19) of FIGS. 3a and 3b rather than a cigarette or a stick.

[0115] The cap (A40) can be detachably coupled to one end of the body (A10). The cap (A40) can cover the upper portion of the body (A10) around the first insertion space (A14). The extractor (A20) is coupled to the cap (A40) and can operate integrally with the cap (A40). When the cap (A40) is coupled to the body (A10), the extractor (A20) can be inserted into the first insertion space (A14), and the heater assembly (A30) can pass through the through hole (A23) of the second flange (A22) and be positioned within the second insertion space (A24).

[0116] The cap (A40) may have an insertion opening (A44). The insertion opening (A44) may be aligned with the second insertion space (A24) on the upper side of the second insertion space (A24) of the extractor (A20). The insertion opening (A44) may have a circular cross-section. A door (A45) may be movably installed on the cap (A40). The door (A45) may open and close the insertion opening (A44) and the second insertion space (A24).

[0117] The stick (S) can be inserted into the second insertion space (A24). The stick (S) can be inserted into the second insertion space (A24) through the insertion port (A44). The upper side of the stick (S) can be exposed to the upper side of the extractor (A20) and the cap (A40). The stick (S) can be supported by the second side wall (A21) and the second flange (A22) in the second insertion space (A24). The heater rod (A31) penetrating the hollow (A34) can be inserted into the lower part of the stick (S) inserted into the second insertion space (A24).

[0118] At least one area of ​​the stick (S) accommodated in the second insertion space (A24) can be heated by the heater (A33). Vaporized particles can be generated by the heating of the stick (S). At this time, the user can hold one end of the stick (S) exposed to the outside in his / her mouth and inhale air. As the user inhales, air can be introduced into the internal space of the body (A10) through an air inlet formed in one area of ​​the body (A10). The air can be introduced into the stick (S) through the through hole (A23) and mixed with the vaporized particles to generate an aerosol. The aerosol can travel along the stick (S) and be provided to the user.

[0119] The inductive sensor (A50) is configured to generate a sensing value corresponding to the distance from a magnetic body. The inductive sensor (A50) can be used to determine whether the cap (A40) is coupled to the body (A10). In other words, the inductive sensor (A50) can function as a cap detection sensor. The inductive sensor (A50) can sense whether the cap (A40) is mounted. The inductive sensor (A50) can generate a sensing value corresponding to the distance from the cap (A40) including a magnetic body. The control unit (A60) can use the inductive sensor (A50) to read a sensing value (inductance value) that changes when the cap (A40) is coupled to the body (A10).

[0120] The sensing value may vary depending on whether the cap (A40) is connected to the body (A10). Specifically, the sensing value generated by the inductive sensor (A50) may be affected by the magnetic material contained in the cap (A40). The sensing value may vary depending on the distance between the inductive sensor (A50) and the cap (A40) positioned in a certain area of ​​the body (A10).

[0121] At this time, to facilitate the inductive sensor (A50) detection of the cap (A40), the inductive sensor (A50) may be positioned on the upper portion of the body (A10). The inductive sensor (A50) may be positioned to face the cap (A40). However, the position of the inductive sensor (A50) is not limited to the position shown in the drawing.

[0122] The inductive sensor (A50) generates a sensing value corresponding to the distance from the cap (A40), and the control unit (A60) can continuously read the sensing value. The control unit (A60) electrically connected to the inductive sensor (A50) can determine that the cap (A40) is separated from the body (A10) based on a specific sensing value or a change in the sensing value of the inductive sensor (A50).

[0123] If the control unit (A60) determines that the cap (A40) is separated from the body (A10), the control unit (A60) may control a user interface to provide a notification to the user indicating that the cap (A40) has been separated. For example, the user interface may include a display, a speaker, etc. This allows the user to recognize that the cap (A40) is not properly attached to the body (A10) or has been separated from the body (A10) and take appropriate action.

[0124] FIG. 6 is a cross-sectional view of a cap and a body of an aerosol generating device according to another embodiment of the present disclosure.

[0125] Referring to FIG. 6, an aerosol generating device (1) according to one embodiment of the present disclosure may include a body (A10), an extractor (A20), a heater assembly (A30), a cap (A40), an inductive sensor (A50), and a control unit (A60).

[0126] At least one of the components of the aerosol generating device (1) illustrated in FIG. 6 may be identical or similar to at least one of the components of the aerosol generating device (1) illustrated in FIGS. 5a and 5b, and any redundant description will be omitted below.

[0127] The inductive sensor (A50) can be used to determine whether the stick (S) is inserted into the first insertion space (A14) to the second insertion space (A24). That is, the inductive sensor (A50) can function as an insertion detection sensor. The inductive sensor (A50) can sense whether the stick (S) is inserted. The inductive sensor (A50) can generate a sensing value corresponding to the distance from the stick (S) including a magnetic body (e.g., an aerosol generating article). The control unit (A60) can read a sensing value (inductance value) that changes when the stick (S) is inserted into the first insertion space (A14) to the second insertion space (A24) using the inductive sensor (A50).

[0128] The sensing value may vary depending on whether the stick (S) is accommodated in the insertion space (A14, A24). Specifically, the sensing value generated by the inductive sensor (A50) may be affected by a metal material such as aluminum or a magnetic material contained in the stick (S). The sensing value may vary depending on the distance between the inductive sensor (A50) positioned in a certain area of ​​the body (A10) and the stick (S).

[0129] At this time, in order for the inductive sensor (A50) to easily detect the stick (S), the inductive sensor (A50) may be arranged to surround the insertion space (A14, A24). The inductive sensor (A50) may be arranged in an area of ​​the body (A10) surrounding the side of the first insertion space (A14) (e.g., the first side wall (A11) of the pipe). The inductive sensor (A50) may be arranged to face the second insertion space (A24).

[0130] However, the position of the inductive sensor (A50) is not limited to the position shown in the drawing. As another example, the inductive sensor (A50) may be placed in an area of ​​the body (A10) covering the lower portion of the first insertion space (A14), such as the first flange (A12) of the pipe.

[0131] The inductive sensor (A50) generates a sensing value corresponding to the distance from the stick (S), and the control unit (A60) can continuously read the sensing value. The control unit (A60) electrically connected to the inductive sensor (A50) can determine that the stick (S) is accommodated in the insertion space (A14, A24) based on a specific sensing value or a change in the sensing value of the inductive sensor (A50).

[0132] When the control unit (A60) determines that the stick (S) is accommodated in the insertion space (A14, A24), the control unit (A60) can control the heater (A33) to heat the aerosol generating article for smoking. This allows heating of the stick (S) to begin simply by the user inserting the stick (S) into the body (A10), without the user having to operate the heater (A33).

[0133] Below, the change in the sensing value of the inductive sensor (A50) will be described.

[0134] Figures 7a and 7b are diagrams showing changes in ideal sensing values, respectively.

[0135] Referring to Figures 7a and 7b, graphs depicting changes in the sensing value of an inductive sensor over time in an ideal situation are illustrated. The horizontal axis of the graph represents time, and the vertical axis represents the sensing value. The sensing value may correspond to a current value, but is not necessarily limited thereto.

[0136] An inductive sensor can generate a sensing value that changes when a specific event (e.g., insertion of a cigarette, cap installation) occurs. For example, when an inductive sensor is used as a cap detection sensor, if an event occurs where the cap is removed from the body and then installed, the sensing value generated by the inductive sensor can change from A1 to A2. As another example, when an inductive sensor is used as an insertion detection sensor, if an event occurs where an aerosol-generating article is inserted into the insertion space, the sensing value generated by the inductive sensor can change from A1 to A2.

[0137] The embodiments are not limited to the examples above. Contrary to what was described above, if an event occurs in which the cap is separated from the body or an event in which an aerosol generating article is removed from the insertion space, the sensing value may change from A1 to A2.

[0138] However, for convenience of explanation below, it is assumed that when the sensing value changes from A1 to A2, an event occurs in which the cap is mounted on the body or an event in which an aerosol generating item is inserted into the insertion space.

[0139] The control unit can determine the degree to which a magnetic material is close to the body based on the sensing value generated by the inductive sensor. In this case, "based on the sensing value" may include a method that uses only the sensing value, or a method that compares the sensing value with a reference value that serves as a basis for judgment. Accordingly, the control unit can determine whether a corresponding event has occurred based on the sensing value. The method by which the control unit interprets the sensing value may vary depending on the embodiment.

[0140] Referring to Fig. 7a, as an example, the control unit can determine that the event has occurred when the sensing value exceeds a predetermined threshold value (CL).

[0141] As another example, the control unit may determine that the event has occurred if the sensing value corresponds to A2. In this case, "the sensing value corresponds to A2" may mean that the sensing value corresponds not only to a specific value called A2, but also to a value within a certain range that includes A2. The certain range may be set by the user. In the following, the expression "corresponds to a specific value" may be used with the same meaning.

[0142] As another example, the control unit can determine that an event has occurred when the sensing value changes from A1 to A2.

[0143] As another example, the control unit may determine that an event has occurred based on the degree of change when the sensing value changes from A1 to A2. The degree of change may refer to either the amount of change or the rate of change, depending on the embodiment.

[0144] Referring to Figure 7b, the control unit can interpret the sensing value by referring to a preset reference value. In this case, the control unit can determine whether an event has occurred based on the difference between the sensing value and the reference value. Specifically, the control unit can determine whether the cap is attached to the body or whether an aerosol-generating item is accommodated in the insertion space based on the reference value and the sensing value.

[0145] At this time, the difference between the sensing value and the reference value may mean the difference between the two values ​​or the multiplication of the two values, depending on the embodiment. For convenience of explanation, the difference between A1 and A0 is called B1, and the difference between A2 and A0 is called B2.

[0146] As an example, the control unit can determine that an event has occurred when the difference between the sensing value and the reference value exceeds BC, which is the difference between the threshold value (CL) and the reference value.

[0147] As another example, the control unit can determine that the event has occurred when the difference between the sensed value and the reference value is B2.

[0148] As another example, the control unit can determine that an event has occurred based on the degree of change in the difference between the sensed value and the reference value. The degree of change, depending on the embodiment, can refer to either the amount of change or the rate of change. Specifically, the control unit can determine that an event has occurred based on the degree of change from B1 to B2.

[0149] Meanwhile, note that the sensing value generated from the inductive sensor before the event occurs is constant at A1, and the sensing value generated from the inductive sensor after the event occurs is constant at A2. In other words, the sensing value changes only when a specific event occurs.

[0150] However, this is an explanation assuming an ideal situation, and in real situations, the sensing value of an inductive sensor can change due to various factors even if a specific event does not occur.

[0151] Below, we will explain the change in the sensing value of the inductive sensor in an actual situation.

[0152] Figures 8a and 8b are diagrams showing changes in actual sensing values, respectively.

[0153] Referring to Figures 8a and 8b, graphs illustrating changes in the sensing values ​​of an inductive sensor over time in a real-world situation are illustrated. The axes of the graphs have the same meanings as described above.

[0154] Unlike the graphs illustrated in FIGS. 7A and 7B , the sensing values ​​of the inductive sensor in FIGS. 8A and 8B are continuously changing. Factors that cause the sensing values ​​of the inductive sensor to change include various factors other than the occurrence of specific events (e.g., cap attachment / detachment, cigarette insertion / removal). In this case, the occurrence of a "specific event" is assumed to mean the occurrence of a specific event that is the subject of judgment by the aforementioned control unit.

[0155] For example, the sensing value of an inductive sensor can be affected by the surrounding environment. For example, the sensing value may vary depending on the ambient temperature or humidity. Furthermore, the sensing value may vary if a magnetic material approaches the aerosol generating device. Furthermore, the sensing value may vary depending on the type of magnetic material approaching. These cases represent cases where the sensing value changes even without the user's intention.

[0156] As shown in the drawing, fluctuations in the sensing value may indicate the presence of relatively small noise. A vertical increase in the sensing value at time t1 may indicate the presence of large noise, such as the approach of a magnetic object. From now on, unless otherwise noted, small noise is ignored.

[0157] Unlike in FIGS. 7a and 7b where the sensing value changed from A1 to A2, in FIGS. 8a and 8b the sensing value was A1, changed to N1 when a large noise occurred at t1, and changed to N2 when a specific event occurred at t2.

[0158] Referring to Fig. 8a, according to an example, since the sensing value becomes N1 and equals the threshold value when a large noise occurs, the control unit may incorrectly determine that an event has occurred even before a specific event occurs.

[0159] In another example, since the sensing values ​​are N1 and N2 and do not correspond to A2, the control unit may incorrectly determine that the event did not occur even though the event did occur.

[0160] In another example, because the sensing value changed from A1 to A2 but not from N1 to N2, the control unit may incorrectly determine that an event did not occur even though a specific event did occur.

[0161] According to another example, if the judgment of the control unit is based on the amount of change in the sensed value, the degree of change from A1 to A2 is the same as the degree of change from N1 to N2, so the control unit can correctly determine that an event has occurred. However, if the judgment of the control unit is based on the rate of change of the sensed value, the degree of change from A1 to A2 is different from the degree of change from N1 to N2, so the control unit may incorrectly determine that an event has not occurred even though a specific event has occurred.

[0162] Referring to Fig. 8b, according to an example, since the difference between the sensing value and the reference value, D1, becomes equal to the difference between the threshold value (CL) and the reference value, BC, when a large noise occurs, the control unit may incorrectly determine that an event has occurred even before a specific event occurs.

[0163] In another example, since the difference between the sensed value and the reference value is D1 and D2, which does not correspond to B2, the control unit may incorrectly determine that an event did not occur even though a specific event has occurred.

[0164] According to another example, if the difference between the sensed value and the reference value changes from B1 to D1 and from D1 to D2, and the 'degree of change from B1 to D1' and the 'degree of change from D1 to D2' are different from the 'degree of change from B1 to B2', the control unit may incorrectly determine that an event did not occur even though a specific event has occurred.

[0165] In summary, because the sensing value changes due to noise, the control unit may make an incorrect judgment regarding the occurrence of a specific event even though it should accurately determine whether the event has occurred.

[0166] To solve the above problem, calibration of the sensed values ​​or reference values ​​is necessary. Calibrating the sensed values ​​requires an initial value that can be compared to the sensed values. This initial value can refer to the sensed values ​​in a natural state without any noise. Calibrating the sensed values ​​to follow the initial values ​​in the natural state, or calibrating the reference value in response to changing sensed values, can resolve the above problem.

[0167] Below, we describe the results when correction is performed in the above situation.

[0168] Fig. 9a is a diagram showing the result of correcting the sensing value based on the initial value in the situation of Fig. 8a. Fig. 9b is a diagram showing the result of correcting the reference value based on the sensing value in the situation of Fig. 8b.

[0169] Referring to FIGS. 9A and 9B , when a sensed value changes due to noise, the control unit can correct the sensed value or the reference value. For example, the control unit can correct the sensed value so that the sensed value becomes equal to a predetermined initial value. As another example, the control unit can correct the reference value based on the sensed value so that the reference value maintains a predetermined difference in relation to the sensed value.

[0170] When the sensing value generated from the inductive sensor changes, if the changed sensing value does not fall within a predetermined range, the control unit can correct the changed sensing value to an initial value or correct a reference value based on the changed sensing value. In this case, the "situation in which the sensing value falls within a predetermined range" may mean a situation in which the sensing value changes due to the occurrence of a specific event.

[0171] It's important to note that correction should not be performed when the sensing value changes due to the occurrence of a specific event. Therefore, the control unit can correct the sensing value or reference value if it determines that a specific event has not occurred based on the sensing result.

[0172] At this time, as an example, when the control unit determines whether a specific event has occurred based on a threshold value, a problem may arise in which a specific event is determined to have occurred even though the specific event has not occurred, as described above.

[0173] This problem can be solved by allowing the user to set a threshold range. Setting the threshold range close to A2, the sensing value indicating the occurrence of a specific event, can minimize the above issues. For example, as shown, the threshold range can be set to the range between CL1 and CL2.

[0174] Below, we will explain in order the case where the sensing value is corrected to follow the initial value of the natural state and the case where the reference value is corrected in response to the changing sensing value.

[0175] Referring to Fig. 9a, the control unit can set the initial value to A1, which is the sensing value in a natural state without any noise. If a large amount of noise occurs and the sensing value changes from A1 to N1, the control unit can determine that a specific event has not occurred as a result of the sensing and correct the sensing value from N1 to the initial value, A1.

[0176] If correction is not performed, the sensing value changes from N1 to N2 when a specific event occurs, so the control unit may not be able to determine that a specific event has occurred, as described in Fig. 8a.

[0177] However, if correction is performed, since the sensing value changes from A1 to A2 when a specific event occurs, the control unit can normally determine that a specific event has occurred, as described in Fig. 7a.

[0178] Referring to Fig. 9b, the reference value is preset to A0. If a large amount of noise occurs and the sensing value changes from A1 to N1, the control unit may determine that a specific event has not occurred as a result of the sensing and correct the reference value from A0 to N0. In this case, A1 and N1 may be referenced when correcting the reference value.

[0179] As shown, the degree of change from A1 to N1 and the degree of change from A0 to N0 may be the same in terms of the amount of change. However, the embodiment is not limited to the figure. Depending on the algorithm for correction, the degree of change in the sensed value may be the same as or different from the degree of change in the reference value in terms of the rate of change.

[0180] Meanwhile, as the reference value is corrected, the upper and lower limits of the critical range, CL1 and CL2, and the sensed value A2 when a specific event occurs can also be corrected. As a result of the correction, the difference between the critical range and the reference value, and the difference between the sensed value and the reference value, can be restored to the same values ​​as before the noise occurred.

[0181] If correction is not performed, when a specific event occurs and the sensing value changes from N1 to N2, the reference value remains the same as A0, so the control unit may not be able to determine that a specific event has occurred, as described in Fig. 8b.

[0182] However, when correction is performed, when a specific event occurs and the sensing value changes from N1 to N2, the reference value is also corrected and changed to N0, and as mentioned above, the difference between N0 and N2 is the same as B2, which is the difference between A0 and A2, so the control unit can normally determine that a specific event has occurred, as described in Fig. 7b.

[0183] Below, examples of correcting sensing values ​​or reference values ​​at regular intervals will be described. In this case, the regular interval may mean, for example, 1 hour, 20 minutes, 10 minutes, 5 minutes, 1 minute, 30 seconds, or 10 seconds. The user may set the correction interval by considering the aspect of improving the reliability of the judgment of the control unit (e.g., the shorter the correction interval, the higher the reliability) and the aspect of power consumption of the inductive sensor and the control unit (e.g., the longer the correction interval, the lower the power consumption).

[0184] Figure 10 is a drawing showing an example of correcting a sensing value at a regular cycle in a situation where the sensing value changes periodically.

[0185] Referring to Figure 10, a graph is shown showing the results of periodically changing sensing values ​​being corrected at regular intervals. The axes of the graph have the same meaning as described above. The control unit can correct the sensing values ​​at a predetermined user-defined interval.

[0186] First, a situation where the sensing value changes periodically could be, for example, a situation where a magnetic material repeatedly approaches and moves away from an inductive sensor at a regular rate. Specifically, this could be a situation where a user has an aerosol generator and a metal key in their pants pocket. As the user walks, the pocket shakes, causing the key to move closer and further away from the aerosol generator.

[0187] In the graph shown, the wave-shaped curve depicted as a dotted line may represent an actual sensing value (1010) that changes due to noise. The horizontal line depicted as a dashed line may represent an initial value (1020), which is a natural sensing value unaffected by noise. The irregularly shaped solid line may represent a corrected sensing value (1030). In this case, a person skilled in the art can easily understand that there is an invisible part where the dotted line is covered by the solid line.

[0188] The control unit can correct the actual sensing value (1010) at regular intervals. The control unit can correct the reference value based on the initial value at a specific point in time. At this time, the initial value can have a constant value over time. At the correction point, the control unit can correct the actual sensing value (1010) to the initial value (1020). Therefore, the corrected sensing value (1030) can be the same as the initial value (1020) at each correction point.

[0189] After the actual sensing value (1010) is corrected to the initial value (1020), the corrected sensing value (1030) can change according to the change in the actual sensing value (1010) during one cycle until the next correction point. Accordingly, if the corrected sensing value (1030) during one cycle is translated in parallel in the y-axis direction, it can become the same as the actual sensing value (1010).

[0190] As the calibration cycle becomes shorter, the calibrated sensing value (1030) can have a similar form to the initial value (1020). As the calibrated sensing value (1030) becomes more similar to the initial value (1020), the reliability of the judgment result of the control unit that determines whether a specific event has occurred can be improved.

[0191] Figures 11a to 11c are diagrams showing examples of correcting a reference value at regular intervals in a situation where a sensing value changes periodically.

[0192] Referring to Figures 11a to 11c, graphs are shown showing the results of periodically correcting the reference value based on a periodically changing sensing value. The axes of the graphs have the same meaning as described above. The control unit can correct the reference value at a predetermined user-defined interval.

[0193] Referring to Fig. 11a, a wave-shaped curve drawn as a solid line may indicate an actual sensing value (1110) that changes due to noise. A horizontal line drawn as a dashed line may indicate an initial value (1120), which is a natural sensing value unaffected by noise. A horizontal line drawn as a dotted line may indicate a reference value (1140) before correction. A thick dotted line in the shape of steps may indicate a corrected reference value (1150a). In this case, the difference between the initial value (1120) and the reference value (1140) before correction may have a predetermined value.

[0194] The control unit can calibrate the pre-calibration reference value (1140) at regular intervals. The control unit can calibrate the reference value based on the sensing value at a specific point in time. Specifically, the control unit can calibrate the pre-calibration reference value (1140) by referring to the initial value (1120) and the actual sensing value (1110). At the time of calibration, the control unit can reflect the difference between the initial value (1120) and the actual sensing value (1110) in the pre-calibration reference value (1140) to derive the calibrated reference value (1150a).

[0195] Therefore, the difference between the initial value (1120) and the actual sensing value (1110) at the calibration point may be the same as the difference between the pre-calibration reference value (1140) and the calibrated reference value (1150a). If the calibrated reference value (1150a) is moved in parallel in the y-axis direction, the calibrated reference value (1150a) may become the same as the actual sensing value (1110) at all calibration points. After the pre-calibration reference value (1140) is calibrated to the calibrated reference value (1150a), the calibrated reference value (1150a) may maintain a constant value for one cycle until the next calibration point.

[0196] As the calibration cycle becomes shorter, the calibrated reference value (1150a) can have a similar shape to the changing actual sensing value (1110). As the shape of the calibrated reference value (1150a) becomes more similar to the shape of the actual sensing value (1110), the calibrated reference value (1150a) can be similar to the result of simply translating the actual sensing value (1110) in the y-axis direction.

[0197] Ideally, the difference between the calibrated reference value (1150a) and the actual sensed value (1110) can be the same at all times. This difference can be equal to the predetermined "difference between the initial value (1120) and the reference value before calibration (1140)." In other words, changes in the sensed value caused by noise can be offset by changes in the reference value. Consequently, the reliability of the judgment results of the control unit that determines whether a specific event has occurred can be improved.

[0198] Referring to Fig. 11b, the actual sensing value (1110), the initial value (1120), and the reference value before correction (1140) are the same as those shown in Fig. 11a, but the shape of the corrected reference value (1150b) is shown differently from that shown in Fig. 11a. In Fig. 11b, the corrected reference value (1150b) is shown in the same shape as the actual sensing value (1110) after the first correction point.

[0199] The control unit can correct the pre-calibration reference value (1140) at regular intervals. When a predetermined point in time (e.g., a calibration point) for correcting the reference value according to the predetermined cycle is reached, the control unit can correct the pre-calibration reference value (1140) by referring to the actual sensing value (1110). At the calibration point, the control unit can derive the corrected reference value (1150b) by reflecting the actual sensing value (1110) of the previous cycle to the pre-calibration reference value (1140). That is, the control unit can correct the reference value to follow the change in the sensing value during the previous cycle based on the predetermined point in time.

[0200] Therefore, if the corrected reference value (1150b) is moved in parallel in the +y direction and -x direction, the corrected reference value (1150b) can be the same as the actual sensing value (1110). After the reference value (1140) before correction is corrected to the corrected reference value (1150b), during one cycle until the next correction point, the corrected reference value (1150b) can change according to the change in the actual sensing value (1110) of the previous cycle.

[0201] As the calibration cycle becomes shorter, the x-axis deviation between the calibrated reference value (1150b) and the actual sensing value (1110) may decrease. As the x-axis deviation decreases, the calibrated reference value (1150b) may become similar to the result of simply translating the actual sensing value (1110) in the y-axis direction.

[0202] Ideally, the difference between the calibrated reference value (1150b) and the actual sensed value (1110) can be the same at all times. This difference can be equal to the predetermined "difference between the initial value (1120) and the reference value before calibration (1140)." In other words, changes in the sensed value caused by noise can be offset by changes in the reference value. Consequently, the reliability of the judgment results of the control unit that determines whether a specific event has occurred can be improved.

[0203] Referring to Fig. 11c, the actual sensing value (1110), the initial value (1120), and the reference value before correction (1140) are the same as those shown in Fig. 11a, but the shape of the corrected reference value (1150c) is shown differently from that shown in Fig. 11a. In addition, the average value (1115) of the actual sensing value (1110) for one cycle is shown.

[0204] The control unit can calibrate the pre-calibration reference value (1140) at regular intervals. The control unit can calibrate the pre-calibration reference value (1140) by referring to the average value (1115) of the actual sensing values ​​(1110) for one cycle. At the time of calibration, the control unit can reflect the average value (1115) of the previous cycle to the pre-calibration reference value (1140) to derive the calibrated reference value (1150c).

[0205] Therefore, at the time of calibration, the difference between the initial value (1120) and the average value (1115) for the previous one cycle may be the same as the difference between the pre-calibration reference value (1140) and the calibrated reference value (1150c). If the calibrated reference value (1150c) is moved in parallel in the +y direction and the -x direction, the calibrated reference value (1150c) may become the same as the average value (1115) of the actual sensing value (1110). After the pre-calibration reference value (1140) is calibrated to the calibrated reference value (1150c), the calibrated reference value (1150c) may maintain a constant value for one cycle until the next calibration time.

[0206] As the calibration cycle becomes shorter, the x-axis deviation between the calibrated reference value (1150c) and the average value (1115) may decrease, and the calibrated reference value (1150c) may have a shape similar to the changing actual sensing value (1110). As the x-axis deviation decreases and the shape of the calibrated reference value (1150c) becomes more similar to the shape of the actual sensing value (1110), the calibrated reference value (1150c) may become similar to the result of simply translating the actual sensing value (1110) in the y-axis direction.

[0207] Ideally, the difference between the calibrated reference value (1150c) and the actual sensed value (1110) can be the same at all times. This difference can be equal to the predetermined "difference between the initial value (1120) and the reference value before calibration (1140)." In other words, changes in the sensed value caused by noise can be offset by changes in the reference value. Consequently, the reliability of the control unit's judgment results for determining whether a specific event has occurred can be improved.

[0208] Figure 12a is a diagram illustrating an example of correcting a sensing value at a regular interval when a magnetic body approaches and then moves away from an inductive sensor. Figure 12b is a diagram illustrating an example of correcting a reference value at a regular interval when a magnetic body approaches and then moves away from an inductive sensor.

[0209] Referring to Figures 12a and 12b, graphs are shown showing the results of correcting the sensing values ​​that increase and decrease with the movement of the magnetic body at regular intervals. The axes of the graphs have the same meaning as described above.

[0210] First, a situation where the sensing value increases and then decreases could be, for example, a magnetic object approaching and then moving away from an inductive sensor. In this case, the slope of the graph can be determined by the speed of the magnetic object's movement. In this situation, we assume the magnetic object approaches the inductive sensor in an instant, maintains the distance, and then moves away in an instant.

[0211] Referring to Fig. 12a, the dotted line may represent an actual sensing value (1210) that changes due to noise. The horizontal line represented by a dashed line may represent an initial value (1220), which is a natural sensing value unaffected by noise. The solid line may represent a corrected sensing value (1230). At this time, a person skilled in the art can easily understand that there is an invisible part where the dotted line is covered by the solid line.

[0212] As described in Fig. 10, the control unit can correct the actual sensing value (1210) to the initial value (1220) at regular intervals. The corrected sensing value (1230) may be the same as the initial value (1220) at each calibration point. In addition, during one cycle until the next calibration point, the corrected sensing value (1230) may change according to the change in the actual sensing value (1210). In the present situation, since the actual sensing value (1210) does not change except for one increase / decrease each, the corrected sensing value (1230) may be the same as the initial value (1220) most of the time.

[0213] As the calibration cycle becomes shorter, the time interval between the rising and falling points of the calibrated sensing value (1230) can become narrower. As this time interval becomes narrower, the calibrated sensing value (1230) can maintain the initial value (1220) state except for the occurrence of a single impulse in the calibrated sensing value (1230), thereby improving the reliability of the judgment result of the control unit that determines whether a specific event has occurred.

[0214] Referring to Fig. 12b, the solid line may represent an actual sensing value (1210) that changes due to noise. The horizontal line drawn as a dashed line may represent an initial value (1220), which is a natural sensing value unaffected by noise. The horizontal line drawn as a dotted line may represent a reference value (1240) before correction. The thick dotted line may represent a corrected reference value (1250).

[0215] As described in Fig. 11a, the control unit can calibrate the pre-calibration reference value (1240) at regular intervals. The control unit can calibrate the pre-calibration reference value (1240) by referring to the initial value (1220) and the actual sensing value (1210). At the time of calibration, the control unit can reflect the difference between the initial value (1220) and the actual sensing value (1210) in the pre-calibration reference value (1240) to derive the calibrated reference value (1250).

[0216] Therefore, the difference between the initial value (1220) and the actual sensing value (1210) at the calibration point may be the same as the difference between the pre-calibration reference value (1240) and the corrected reference value (1250). If the corrected reference value (1250) is translated in parallel in the y-axis direction, the corrected reference value (1250) may become the same as the actual sensing value (1210) at all calibration points. After the pre-calibration reference value (1240) is corrected to the corrected reference value (1250), the corrected reference value (1250) may maintain a constant value for one cycle until the next calibration point.

[0217] As the calibration cycle becomes shorter, the calibrated reference value (1250) can have a similar shape to the changing actual sensing value (1210). In particular, as the time point when the actual sensing value (1210) changes and the next calibration time point become closer, the shape of the calibrated reference value (1250) can be similar to the shape of the actual sensing value (1210). Accordingly, the calibrated reference value (1250) can be similar to the result of simply translating the actual sensing value (1210) in the y-axis direction.

[0218] Ideally, the difference between the calibrated reference value (1250) and the actual sensed value (1210) can be the same at all times. This difference can be equal to the "difference between the predetermined initial value (1220) and the reference value before calibration (1240)". In other words, changes in the sensed value caused by noise can be offset by changes in the reference value. Consequently, the reliability of the control unit's judgment results for determining whether a specific event has occurred can be improved.

[0219] Below, examples of correcting sensing values ​​or reference values ​​after a user starts smoking are described.

[0220] Figure 13a is a diagram illustrating an example of correcting a sensing value after a predetermined time has passed since the heater started heating. Figure 13b is a diagram illustrating an example of correcting a reference value after a predetermined time has passed since the heater started heating.

[0221] Referring to Figures 13a and 13b, graphs are shown showing the results of correcting sensing values ​​that change due to heater heating. The correction is performed a predetermined time after the heater begins heating. The axes of the graphs have the same meaning as described above.

[0222] The user's initiation of smoking may indicate that the heater has begun heating. The inductive sensor's sensing value may change due to the heat generated by the heater. Since the sensing value change is not due to a specific event but rather to environmental factors, it can be considered to be due to noise. However, the change in sensing value is not limited to what is shown.

[0223] The sensing values ​​of an inductive sensor can be sensitive to the heat of the heater. This means that as the heater temperature continuously changes during smoking, the sensing values ​​of the inductive sensor can also continuously change. Therefore, when the sensing values ​​are complexly and rapidly changing due to the heater's heat, correcting the sensing values ​​or reference values ​​is relatively difficult compared to other times, which can lead to significant power consumption.

[0224] Furthermore, the likelihood of certain events occurring while the user is smoking is low. For example, if the user is smoking, the aerosol-generating device is already inserted into the insertion space, eliminating the need to determine whether it is inserted. Furthermore, since there is no need to remove or attach the cap in this state, there is no need to determine whether it is attached or detached. Therefore, once the heater begins heating, there is little need to calibrate the sensing or reference values.

[0225] For the above reasons, the control unit of the aerosol generating device according to one embodiment can correct the sensing value or reference value after a predetermined period of time has elapsed since the heater began heating. The predetermined period of time may vary depending on the user's settings, and may mean, for example, approximately 10 minutes, sufficient for the user to finish smoking. However, the embodiment is not limited to 10 minutes.

[0226] In another embodiment, if the aerosol generating device includes a temperature sensor for sensing the temperature of the heater, the control unit may correct the sensed value or reference value when the temperature sensor detects a room temperature (e.g., 20 degrees Celsius to 30 degrees Celsius). Specifically, the control unit may determine the temperature of the heater in response to a signal generated by the temperature sensor, and correct the sensed value or reference value when the temperature of the heater reaches a predetermined temperature.

[0227] Meanwhile, although not shown, the control unit can set the sensing value at this time as the initial value when the heater temperature reaches a predetermined temperature. For example, when the temperature sensor detects room temperature (e.g., 20 to 30 degrees Celsius), the control unit can regard this time as a natural state without any noise and set the sensing value at this time as the initial value. The control unit can store the sensing value in memory as the initial value. This allows the control unit to reset the initial value.

[0228] Referring to Fig. 13a, the dotted curve may represent an actual sensing value (1310) that changes due to noise. The horizontal line represented by a dashed line may represent an initial value (1320), which is a natural sensing value unaffected by noise. The irregularly shaped solid line may represent a corrected sensing value (1330). At this time, a person skilled in the art can easily understand that there is an invisible portion where the dotted line is covered by the solid line.

[0229] The control unit may correct the sensing value (1310) when a predetermined time has passed since smoking has started (e.g., after the heater has started heating) or when the temperature sensor detects a predetermined temperature. At the time of correction, the control unit may correct the actual sensing value (1310) to the initial value (1320). The corrected sensing value (1330) may change according to changes in the actual sensing value (1310).

[0230] Referring to Fig. 13b, the solid curve may represent an actual sensing value (1310) that changes due to noise. The dashed horizontal line may represent an initial value (1320), which is a natural sensing value unaffected by noise. The dotted horizontal line may represent a reference value (1340) before correction. The thick dotted line in the shape of steps may represent a corrected reference value (1350). In this case, the difference between the initial value (1320) and the reference value (1340) before correction may have a predetermined value.

[0231] The control unit can correct the pre-calibration reference value (1340) when a predetermined time has passed since smoking started (e.g., after the heater started heating) or when the temperature sensor detects a predetermined temperature. The control unit can correct the pre-calibration reference value (1340) by referring to the initial value (1320) and the actual sensed value (1310). At the time of calibration, the control unit can reflect the difference between the initial value (1320) and the actual sensed value (1310) in the pre-calibration reference value (1340) to derive the corrected reference value (1350). At the time of calibration, the difference between the initial value (1320) and the actual sensed value (1310) may be equal to the difference between the pre-calibration reference value (1340) and the corrected reference value (1350). Thereafter, the corrected reference value (1350) may be maintained at a constant value.

[0232] Figure 14a is a diagram showing an example of correcting a sensing value at a regular interval, but then correcting the sensing value again at a regular interval after a predetermined time has passed since the heater started heating. Figure 14b is a diagram showing an example of correcting a reference value at a regular interval, but then correcting the reference value again at a regular interval after a predetermined time has passed since the heater started heating.

[0233] Referring to Figures 14a and 14b, graphs are shown that illustrate a situation in which sensing values ​​or reference values ​​are corrected at regular intervals in addition to the situations described above in Figures 13a and 13b. The axes of the graphs have the same meanings as described above.

[0234] The control unit can calibrate the sensed value or reference value at regular intervals. However, after smoking begins (e.g., heating of the heater begins), the control unit may not perform the calibration until a predetermined time has elapsed or a predetermined temperature is detected by the temperature sensor. After the predetermined time has elapsed or the predetermined temperature is detected, the control unit can calibrate the sensed value or reference value again from that point on. From this point on, calibration can be performed at regular intervals again.

[0235] Referring to Fig. 14a, the dotted line may represent an actual sensing value (1410) that changes due to noise. The horizontal line represented by a dashed line may represent an initial value (1420), which is a natural sensing value unaffected by noise. The irregularly shaped solid line may represent a corrected sensing value (1430). At this time, a person skilled in the art can easily understand that there is an invisible portion where the dotted line is covered by the solid line.

[0236] The control unit can correct the actual sensing value (1410) at regular intervals. However, as mentioned above, when smoking starts (e.g., heating of the heater starts), the control unit may not proceed with the correction even if the regular interval has been reached. That is, the control unit corrects the sensing value at regular intervals, but before a certain time has passed since the start of heating of the heater, the sensing value can be maintained even if a certain point in time for correcting the sensing value according to the regular interval has been reached. Thereafter, the correction may be resumed when a certain time has passed or a certain temperature is detected by the temperature sensor.

[0237] At the calibration point, the control unit can calibrate the actual sensing value (1410) to the initial value (1420). Therefore, the calibrated sensing value (1430) can be the same as the initial value (1420) at each calibration point.

[0238] After the actual sensing value (1410) is corrected to the initial value (1420), the corrected sensing value (1430) can change according to the change in the actual sensing value (1410) during one cycle until the next correction point. Accordingly, if the corrected sensing value (1430) during one cycle is translated in parallel in the y-axis direction, it can become the same as the actual sensing value (1410).

[0239] Excluding the values ​​from the start of smoking until the resumption of correction, the shorter the correction cycle, the more similar the corrected sensing value (1430) can be to the initial value (1420). The more similar the corrected sensing value (1430) is to the initial value (1420), the more reliable the judgment result of the control unit that determines whether a specific event has occurred can be.

[0240] Referring to Fig. 14b, a solid line may represent an actual sensing value (1410) that changes due to noise. A horizontal line drawn as a dashed line may represent an initial value (1420), which is a natural sensing value unaffected by noise. A horizontal line drawn as a dotted line may represent a reference value (1440) before correction. A thick dotted line may represent a corrected reference value (1450).

[0241] The control unit can calibrate the reference value (1440) before calibration at regular intervals. However, as mentioned above, when smoking begins (e.g., heating of the heater begins), the control unit may not perform calibration even when the regular interval has been reached. That is, before a predetermined time has elapsed since the heater begins heating, the control unit may maintain the reference value even when a predetermined point in time for calibrating the reference value according to the predetermined interval has been reached. Afterwards, calibration may be resumed when a predetermined time has elapsed or a predetermined temperature is detected by the temperature sensor.

[0242] The control unit can correct the pre-calibration reference value (1440) by referring to the initial value (1420) and the actual sensing value (1410). At the time of calibration, the control unit can reflect the difference between the initial value (1420) and the actual sensing value (1410) in the pre-calibration reference value (1440) to derive the corrected reference value (1450).

[0243] Therefore, the difference between the initial value (1420) and the actual sensing value (1410) at the calibration point may be the same as the difference between the pre-calibration reference value (1440) and the calibrated reference value (1450). If the calibrated reference value (1450) is translated in parallel in the y-axis direction, the calibrated reference value (1450) may become the same as the actual sensing value (1410) at all calibration points. After the pre-calibration reference value (1440) is calibrated to the calibrated reference value (1450), the calibrated reference value (1450) may maintain a constant value for one cycle until the next calibration point.

[0244] Excluding the value from the start of smoking until the resumption of correction, as the correction cycle becomes shorter, the corrected reference value (1450) may have a similar shape to the changing actual sensing value (1410). In particular, as the time point of change of the actual sensing value (1410) approaches the time point of the next correction, the shape of the corrected reference value (1450) may be similar to the shape of the actual sensing value (1410). Accordingly, the corrected reference value (1450) may be similar to the result of simply translating the actual sensing value (1410) in the y-axis direction.

[0245] Ideally, the difference between the calibrated reference value (1450) and the actual sensed value (1410) can be the same at all times. This difference can be equal to the predetermined "difference between the initial value (1420) and the reference value before calibration (1440)." In other words, changes in the sensed value caused by noise can be offset by changes in the reference value. Consequently, the reliability of the control unit's judgment results for determining whether a specific event has occurred can be improved.

[0246] Figure 15a is a diagram showing an example of correcting a sensing value at a regular interval, and then correcting the sensing value again at a regular interval when an aerosol-generating article is inserted and then removed. Figure 15b is a diagram showing an example of correcting a reference value at a regular interval, and then correcting the reference value again at a regular interval when an aerosol-generating article is inserted and then removed.

[0247] Referring to Figures 15a and 15b, graphs are shown depicting situations in which an aerosol-generating item, a stick, is inserted and removed in addition to the situations described above in Figures 14a and 14b. The axes of the graphs have the same meanings as described above.

[0248] The control unit can calibrate the sensed value or reference value at regular intervals. When a stick is inserted into the insertion space after a period of time, the control unit can determine that a specific event, that is, insertion of the stick, has occurred as a result of sensing by the inductive sensor. After the stick is inserted into the insertion space, the control unit may not perform calibration until a predetermined period of time has elapsed after the stick is inserted or a predetermined temperature is detected by the temperature sensor. After the predetermined period of time has elapsed or when a predetermined temperature is detected, the control unit can calibrate the sensed value or reference value from that time. From this point on, calibration can be performed again at regular intervals.

[0249] As shown, the event of removing the stick from the insertion space occurred before a predetermined time elapsed after the stick was inserted or before a predetermined temperature was detected by the temperature sensor. Although not shown, if the event of removing the stick occurred later, the control unit may not proceed with the correction until the stick is removed.

[0250] Referring to Fig. 15a, the dotted line may represent an actual sensing value (1510) that changes due to noise. The horizontal line represented by a dashed line may represent an initial value (1520), which is a natural sensing value unaffected by noise. The irregularly shaped solid line may represent a corrected sensing value (1530). At this time, a person skilled in the art can easily understand that there is an invisible portion where the dotted line is covered by the solid line.

[0251] The control unit can calibrate the actual sensing value (1510) at regular intervals. However, as mentioned above, if the stick is inserted into the insertion space, the control unit may not perform calibration even after the regular interval has elapsed. Afterwards, calibration may resume after a predetermined period of time has elapsed or when a predetermined temperature is detected by the temperature sensor.

[0252] The correction method and corresponding features of the control unit shown in Fig. 15a are the same as those described above in Fig. 14a, and thus their description is omitted here.

[0253] Referring to Fig. 15b, a solid line may represent an actual sensing value (1510) that changes due to noise. A horizontal line drawn as a dashed line may represent an initial value (1520), which is a natural sensing value unaffected by noise. A horizontal line drawn as a dotted line may represent a reference value (1540) before correction. A thick dotted line may represent a corrected reference value (1550).

[0254] The control unit can calibrate the pre-calibration reference value (1540) at regular intervals. However, as mentioned above, if the stick is inserted into the insertion space, the control unit may not proceed with calibration even after the regular cycle has been reached. Afterwards, calibration may resume after a predetermined period of time has elapsed or when a predetermined temperature is detected by the temperature sensor.

[0255] The correction method and corresponding features of the control unit shown in Fig. 15b are the same as those described above in Fig. 14b, and thus their description is omitted here.

[0256] Fig. 16a is a diagram illustrating an example of correcting a sensing value when a situation occurs where a magnetic material approaches and then moves away from the magnetic material in the situation of Fig. 15a. Fig. 16b is a diagram illustrating an example of correcting a reference value when a situation occurs where a magnetic material approaches and then moves away from the magnetic material in the situation of Fig. 15b.

[0257] Referring to Figures 16a and 16b, graphs are shown that, in addition to the situations described in Figures 15a and 15b above, noise occurs when a magnetic body approaches, and then noise is eliminated when the magnetic body moves away. The axes of the graphs have the same meaning as described above.

[0258] The control unit can calibrate the sensing value or reference value at regular intervals. The control unit can calibrate the sensing value or reference value even before noise (e.g., approaching a magnetic material) occurs. If a stick is inserted into the insertion space after some time has passed since the noise occurred, the sensing value or reference value will have been calibrated. Therefore, the control unit can correctly determine that a stick insertion event has occurred, even though noise occurred previously.

[0259] After the stick is inserted into the insertion space, the control unit may not perform calibration until a specific event, such as the removal of the stick, occurs. When the stick is removed from the insertion space, the control unit determines that the specific event, such as the removal of the stick, has occurred as a result of sensing by the inductive sensor, and may then recalibrate the sensing value or reference value. From this point on, calibration may be performed again at a regular interval.

[0260] However, the embodiment is not necessarily limited to the case where calibration resumes when the stick is removed. For example, calibration may not proceed until a predetermined time has elapsed after the stick is inserted or a predetermined temperature is detected by the temperature sensor. After the predetermined time has elapsed or the predetermined temperature is detected, the control unit may then calibrate the sensing value or reference value.

[0261] After the control unit resumes calibration, the control unit can calibrate the sensing value or reference value at regular intervals even when the noise is removed by the magnetic body moving away from the inductive sensor.

[0262] Referring to Fig. 16a, the dotted line may represent an actual sensing value (1610) that changes due to noise. The horizontal line represented by a dashed line may represent an initial value (1620), which is a natural sensing value unaffected by noise. The irregularly shaped solid line may represent a corrected sensing value (1630). At this time, a person skilled in the art can easily understand that there is an invisible portion where the dotted line is covered by the solid line.

[0263] The control unit can calibrate the actual sensing value (1610) at regular intervals. However, as mentioned above, if the stick is inserted into the insertion space, the control unit may not perform calibration even after the regular interval has been reached. Later, if the stick is removed from the insertion space, calibration may resume.

[0264] The correction method and corresponding features of the control unit shown in Fig. 16a are the same as those described above in Fig. 15a, and thus their description is omitted here.

[0265] Referring to Fig. 16b, a solid line may represent an actual sensing value (1610) that changes due to noise. A horizontal line drawn as a dashed line may represent an initial value (1620), which is a natural sensing value unaffected by noise. A horizontal line drawn as a dotted line may represent a reference value (1640) before correction. A thick dotted line may represent a corrected reference value (1650).

[0266] The control unit can calibrate the pre-calibration reference value (1640) at regular intervals. However, as mentioned above, if the stick is inserted into the insertion space, the control unit may not perform calibration even after the regular cycle has been reached. Later, if the stick is removed from the insertion space, calibration may resume.

[0267] The correction method and corresponding features of the control unit shown in Fig. 16b are the same as those described above in Fig. 15b, and therefore, their description is omitted here.

[0268] According to the aerosol generating device according to the embodiments, by correcting the sensing value of the inductive sensor or the reference value that serves as the basis for judgment, precise sensing is possible without malfunction of the inductive sensor and the control unit, and the reliability of the judgment result of the control unit can be improved.

[0269] FIG. 17 is a block diagram of an aerosol generating device according to another embodiment of the present disclosure.

[0270] The aerosol generating device (1) may include a power source (11), a control unit (12), a sensor (13), an output unit (14), an input unit (15), a communication unit (16), a memory (17), and at least one heater (18, 24). However, the internal structure of the aerosol generating device (1) is not limited to that illustrated in Fig. 17. That is, a person having ordinary skill in the art related to the present embodiment will understand that some of the components illustrated in Fig. 17 may be omitted or new components may be added depending on the design of the aerosol generating device (1).

[0271] The sensor (13) can detect the status of the aerosol generating device (1) or the status around the aerosol generating device (1) and transmit the detected information to the control unit (12). Based on the detected information, the control unit (12) can control the aerosol generating device (1) so that various functions such as controlling the operation of the cartridge heater (24) and / or heater (18), restricting smoking, determining whether a stick (not shown) and / or cartridge (not shown) is inserted, and displaying a notification are performed.

[0272] The sensor (13) may include at least one of a temperature sensor (131), a puff sensor (132), an insertion detection sensor (133), a reuse detection sensor (134), a cartridge detection sensor (135), a cap detection sensor (136), and a movement detection sensor (137).

[0273] The temperature sensor (131) can detect the temperature at which the cartridge heater (24) and / or the heater (18) is heated. The aerosol generating device (1) may include a separate temperature sensor that detects the temperature of the cartridge heater (24) and / or the heater (18), or the cartridge heater (24) and / or the heater (18) itself may serve as the temperature sensor.

[0274] The temperature sensor (131) can output a signal corresponding to the temperature of the cartridge heater (24) and / or the heater (18). For example, the temperature sensor (131) can include a resistance element whose resistance value changes in response to a change in the temperature of the cartridge heater (24) and / or the heater (18). It can be implemented by a thermistor, which is an element that utilizes the property of changing resistance depending on temperature. At this time, the temperature sensor (131) can output a signal corresponding to the resistance value of the resistance element as a signal corresponding to the temperature of the cartridge heater (24) and / or the heater (18). For example, the temperature sensor (131) can be configured as a sensor that detects the resistance value of the cartridge heater (24) and / or the heater (18). At this time, the temperature sensor (131) can output a signal corresponding to the resistance value of the cartridge heater (24) and / or the heater (18) as a signal corresponding to the temperature of the cartridge heater (24) and / or the heater (18).

[0275] A temperature sensor (131) may be placed around the power source (11) to monitor the temperature of the power source (11). The temperature sensor (131) may be placed adjacent to the power source (11). For example, the temperature sensor (131) may be attached to one side of a battery, which is the power source (11). For example, the temperature sensor (131) may be mounted on one side of a printed circuit board.

[0276] A temperature sensor (131) is placed inside the body (not shown) and can detect the internal temperature of the body.

[0277] The puff sensor (132) can detect the user's puff based on various physical changes in the airflow path. The puff sensor (132) can output a signal corresponding to the puff. For example, the puff sensor (132) can be a pressure sensor. The puff sensor (132) can output a signal corresponding to the internal pressure of the aerosol generating device. Here, the internal pressure of the aerosol generating device (1) can correspond to the pressure of the airflow path through which the gas flows. The puff sensor (132) can be arranged in correspondence to the airflow path through which the gas flows in the aerosol generating device (1).

[0278] The insertion detection sensor (133) can detect the insertion and / or removal of the stick. The insertion detection sensor (133) can detect a signal change according to the insertion and / or removal of the stick. The insertion detection sensor (133) can be installed around the insertion space. The insertion detection sensor (133) can detect the insertion and / or removal of the stick according to a change in the permittivity inside the insertion space. For example, the insertion detection sensor (133) can be an inductive sensor and / or a capacitance sensor.

[0279] An inductive sensor may include at least one coil. The coil of the inductive sensor may be positioned adjacent to the insertion space. For example, when a magnetic field changes around a current-carrying coil, the characteristics of the current flowing in the coil may change according to Faraday's law of electromagnetic induction. Here, the characteristics of the current flowing in the coil may include the frequency of the alternating current, the current value, the voltage value, the inductance value, the impedance value, etc.

[0280] An inductive sensor can output a signal corresponding to the characteristics of the current flowing through the coil. For example, an inductive sensor can output a signal corresponding to the inductance value of the coil.

[0281] A capacitance sensor may include a conductor. The conductor of the capacitance sensor may be positioned adjacent to the insertion space. The capacitance sensor may output a signal corresponding to the electromagnetic properties of the surroundings, such as the electrostatic capacitance around the conductor. For example, when a stick including a metallic wrapper is inserted into the insertion space, the electromagnetic properties around the conductor may be changed by the wrapper of the stick.

[0282] A reuse detection sensor (134) can detect whether the stick has been reused. The reuse detection sensor (134) may be a color sensor. The color sensor can detect the color of the stick. The color sensor can detect the color of a portion of the wrapper that wraps the outside of the stick. The color sensor can detect a value for an optical characteristic corresponding to the color of an object based on light reflected from the object. For example, the optical characteristic may be a wavelength of light. The color sensor may be implemented as a single component with the proximity sensor, or may be implemented as a separate component distinct from the proximity sensor.

[0283] At least some of the wrappers constituting the stick may change color due to the aerosol. The reuse detection sensor (134) may be positioned corresponding to a position where at least some of the wrappers that change color due to the aerosol are disposed when the stick is inserted into the insertion space. For example, before the stick is used by a user, the color of at least some of the wrappers may be a first color. At this time, as at least some of the wrappers are wetted by the aerosol generated by the aerosol generating device (1) while passing through the stick, the color of at least some of the wrappers may change to a second color. Meanwhile, the color of at least some of the wrappers may be maintained at the second color after changing from the first color to the second color.

[0284] The cartridge detection sensor (135) can detect the mounting and / or removal of the cartridge. The cartridge detection sensor (135) can be implemented by an inductance-based sensor, a capacitive sensor, a resistance sensor, a Hall sensor (hall IC) using the Hall effect, etc.

[0285] The cap detection sensor (136) can detect the attachment and / or removal of the cap. If the cap is separated from the body, the cartridge and part of the body covered by the cap may be exposed to the outside. The cap detection sensor (136) can be implemented by a contact sensor, a hall sensor (hall IC), an optical sensor, or the like.

[0286] A motion detection sensor (137) can detect the movement of the aerosol generating device. The motion detection sensor (137) can be implemented with at least one of an acceleration sensor and a gyro sensor.

[0287] In addition to the sensors (131 to 137) described above, the sensor (13) may further include at least one of a humidity sensor, a pressure sensor, a magnetic sensor, a position sensor (GPS), and a proximity sensor. Since the functions of each sensor can be intuitively inferred by a person skilled in the art from its name, a detailed description thereof may be omitted.

[0288] The output unit (14) can output information on the status of the aerosol generating device (1) and provide it to the user. The output unit (14) may include at least one of a display (141), a haptic unit (142), and an audio output unit (143), but is not limited thereto. When the display (141) and the touch pad form a layered structure to form a touch screen, the display (141) can be used as an input device in addition to an output device.

[0289] The display (141) can visually provide information about the aerosol generating device (1) to the user. For example, the information about the aerosol generating device (1) can mean various information such as the charging / discharging status of the power supply (11) of the aerosol generating device (1), the preheating status of the heater (18), the insertion / removal status of the stick and / or cartridge, the mounting / removal status of the cap, or the status in which the use of the aerosol generating device (1) is restricted (e.g., detection of an abnormal item), and the display (141) can output the above information to the outside. For example, the display (141) can be in the form of an LED light-emitting element. For example, the display (141) can be a liquid crystal display panel (LCD), an organic light-emitting display panel (OLED), etc.

[0290] The haptic unit (142) can provide tactile information about the aerosol generating device (1) to the user by converting an electrical signal into a mechanical stimulus or an electrical stimulus. For example, the haptic unit (142) can generate a vibration corresponding to the completion of the initial preheating when initial power is supplied to the cartridge heater (24) and / or heater (18) for a set period of time. The haptic unit (142) can include a vibration motor, a piezoelectric element, or an electrical stimulation device.

[0291] The acoustic output unit (143) can provide information about the aerosol generating device (1) to the user audibly. For example, the acoustic output unit (143) can convert an electrical signal into an acoustic signal and output it to the outside.

[0292] The power source (11) can supply power used to operate the aerosol generating device (1). The power source (11) can supply power so that the cartridge heater (24) and / or the heater (18) can be heated. In addition, the power source (11) can supply power required for the operation of other components provided in the aerosol generating device (1), such as a sensor (13), an output unit (14), an input unit (15), a communication unit (16), and a memory (17). The power source (11) can be a rechargeable battery or a disposable battery. For example, the power source (11) can be a lithium polymer (LiPoly) battery, but is not limited thereto.

[0293] Although not shown in FIG. 17, the aerosol generating device (1) may further include a power protection circuit. The power protection circuit may be electrically connected to the power source (11) and may include a switching element.

[0294] The power protection circuit can block the power supply (11) according to certain conditions. For example, the power protection circuit can block the power supply (11) when the voltage level of the power supply (11) is higher than a first voltage corresponding to overcharge. For example, the power protection circuit can block the power supply (11) when the voltage level of the power supply (11) is lower than a second voltage corresponding to overdischarge.

[0295] The heater (18) can receive power from the power source (11) to heat the medium or aerosol generating material within the stick. Although not illustrated in FIG. 17, the aerosol generating device (1) may further include a power conversion circuit (e.g., a DC / DC converter) that converts the power of the power source (11) and supplies it to the cartridge heater (24) and / or the heater (18). In addition, when the aerosol generating device (1) generates the aerosol by induction heating, the aerosol generating device (1) may further include a DC / AC converter that converts the direct current power of the power source (11) into alternating current power.

[0296] The control unit (12), sensor (13), output unit (14), input unit (15), communication unit (16), and memory (17) can receive power from the power source (11) and perform their functions. Although not illustrated in FIG. 17, the device may further include a power conversion circuit, for example, an LDO (low dropout) circuit or a voltage regulator circuit, which converts the power of the power source (11) and supplies it to each component. In addition, although not illustrated in FIG. 17, a noise filter may be provided between the power source (11) and the heater (18). The noise filter may be a low pass filter. The low pass filter may include at least one inductor and a capacitor. The cutoff frequency of the low pass filter may correspond to the frequency of the high frequency switching current applied from the power source (11) to the heater (18). The low pass filter can prevent high frequency noise components from being applied to a sensor (13), such as an insertion detection sensor (133).

[0297] In one embodiment, the cartridge heater (24) and / or heater (18) may be formed of any suitable electrically resistive material. For example, suitable electrically resistive materials may be metals or metal alloys including, but not limited to, titanium, zirconium, tantalum, platinum, nickel, cobalt, chromium, hafnium, niobium, molybdenum, tungsten, tin, gallium, manganese, iron, copper, stainless steel, nichrome, and the like. Additionally, the heater (18) may be implemented as, but not limited to, a metal heating wire, a metal heating plate having electrically conductive tracks arranged thereon, a ceramic heating element, and the like.

[0298] In another embodiment, the heater (18) may be an induction heater. For example, the heater (18) may include a susceptor that heats the aerosol generating material by generating heat through a magnetic field applied by a coil.

[0299] The input unit (15) can receive information input from a user or output information to the user. For example, the input unit (15) can be a touch panel. The touch panel can include at least one touch sensor that detects touch. For example, the touch sensor can include, but is not limited to, a capacitive touch sensor, a resistive touch sensor, a surface acoustic wave touch sensor, an infrared touch sensor, etc.

[0300] The display (141) and the touch panel may be implemented as a single panel. For example, the touch panel may be inserted into the display (141) (on-cell type or in-cell type). For example, the touch panel may be added on the display panel (add-on type).

[0301] Meanwhile, the input unit (15) may include, but is not limited to, buttons, key pads, dome switches, jog wheels, jog switches, etc.

[0302] The memory (17) is hardware that stores various data processed in the aerosol generating device (1), and can store data processed and data to be processed in the control unit (12). The memory (17) may include at least one type of storage medium among a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g., SD or XD memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk. The memory (17) may store data on the operation time of the aerosol generating device (1), the maximum number of puffs, the current number of puffs, at least one temperature profile, and a user's smoking pattern.

[0303] The communication unit (16) may include at least one component for communication with another electronic device. For example, the communication unit (16) may include at least one of a short-range communication unit and a wireless communication unit.

[0304] The short-range wireless communication unit may include, but is not limited to, a Bluetooth communication unit, a BLE (Bluetooth Low Energy) communication unit, a near field communication unit, a WLAN (Wi-Fi) communication unit, a Zigbee communication unit, an infrared (IrDA, infrared Data Association) communication unit, a WFD (Wi-Fi Direct) communication unit, an UWB (ultra wideband) communication unit, an Ant+ communication unit, etc.

[0305] The wireless communication unit may include, but is not limited to, a cellular network communication unit, an Internet communication unit, a computer network (e.g., a LAN or WAN) communication unit, etc.

[0306] Although not shown in FIG. 17, the aerosol generating device (1) further includes a connection interface such as a USB (universal serial bus) interface, and can transmit and receive information or charge a power source (11) by connecting to another external device through a connection interface such as a USB interface.

[0307] The control unit (12) can control the overall operation of the aerosol generating device (1). In one embodiment, the control unit (12) may include at least one processor. The processor may be implemented as an array of multiple logic gates, or may be implemented as a combination of a general-purpose microprocessor and a memory storing a program executable by the microprocessor. Furthermore, it will be understood by those skilled in the art that the present embodiment may be implemented as other types of hardware.

[0308] The control unit (12) can control the temperature of the heater (18) by controlling the supply of power from the power source (11) to the heater (18). The control unit (12) can control the temperature of the cartridge heater (24) and / or the heater (18) based on the temperature of the cartridge heater (24) and / or the heater (18) sensed by the temperature sensor (131). The control unit (12) can adjust the power supplied to the cartridge heater (24) and / or the heater (18) based on the temperature of the cartridge heater (24) and / or the heater (18). For example, the control unit (12) can determine a target temperature for the cartridge heater (24) and / or the heater (18) based on a temperature profile stored in the memory (17).

[0309] The aerosol generating device (1) may include a power supply circuit (not shown) electrically connected to the power supply (11) between the power supply (11) and the cartridge heater (24) and / or the heater (18). The power supply circuit may be electrically connected to the cartridge heater (24), the heater (18), or the induction coil (181). The power supply circuit may include at least one switching element. The switching element may be implemented by a bipolar junction transistor (BJT), a field effect transistor (FET), or the like. The control unit (12) may control the power supply circuit.

[0310] The control unit (12) can control power supply by controlling the switching of the switching elements of the power supply circuit. The power supply circuit may be an inverter that converts direct current power output from the power source (11) into alternating current power. For example, the inverter may be configured as a full-bridge circuit or a half-bridge circuit including a plurality of switching elements.

[0311] The control unit (12) can turn on the switching element so that power is supplied from the power source (11) to the cartridge heater (24) and / or the heater (18). The control unit (12) can turn off the switching element so that power is cut off to the cartridge heater (24) and / or the heater (18). The control unit (12) can control the current supplied from the power source (11) by controlling the frequency and / or duty ratio of the current pulse input to the switching element.

[0312] The control unit (12) can control the voltage output from the power source (11) by controlling the switching of the switching element of the power supply circuit. The power conversion circuit can convert the voltage output from the power source (11). For example, the power conversion circuit can include a buck converter that steps down the voltage output from the power source (11). For example, the power conversion circuit can be implemented using a buck-boost converter, a zener diode, etc.

[0313] The control unit (12) can control the on / off operation of the switching element included in the power conversion circuit to adjust the level of the voltage output from the power conversion circuit. When the on state of the switching element continues, the level of the voltage output from the power conversion circuit may correspond to the level of the voltage output from the power source (11). The duty ratio for the on / off operation of the switching element may correspond to the ratio of the voltage output from the power conversion circuit to the voltage output from the power source (11). As the duty ratio for the on / off operation of the switching element decreases, the level of the voltage output from the power conversion circuit may decrease. The heater (18) can be heated based on the voltage output from the power conversion circuit.

[0314] The control unit (12) can control power to be supplied to the heater (18) using at least one of the pulse width modulation (PWM) method and the proportional-integral-differential (PID) method.

[0315] For example, the control unit (12) can control a current pulse having a predetermined frequency and duty ratio to be supplied to the heater (18) using the PWM method. The control unit (12) can control the power supplied to the heater (18) by adjusting the frequency and duty ratio of the current pulse.

[0316] For example, the control unit (12) can determine a target temperature that is the target of control based on a temperature profile. The control unit (12) can control the power supplied to the heater (18) by using the PID method, which is a feedback control method using a difference value between the temperature of the heater (18) and the target temperature, a value obtained by integrating the difference value over time, and a value obtained by differentiating the difference value over time.

[0317] The control unit (12) can prevent the cartridge heater (24) and / or the heater (18) from overheating. For example, the control unit (12) can control the operation of the power conversion circuit to cut off the supply of power to the cartridge heater (24) and / or the heater (18) based on the temperature of the cartridge heater (24) and / or the heater (18) exceeding a preset limit temperature. For example, the control unit (12) can reduce the amount of power supplied to the cartridge heater (24) and / or the heater (18) by a certain percentage based on the temperature of the cartridge heater (24) and / or the heater (18) exceeding a preset limit temperature. For example, the control unit (12) can determine that the aerosol generating substance contained in the cartridge is exhausted based on the temperature of the cartridge heater (24) exceeding the limit temperature, and can cut off the supply of power to the cartridge heater (24).

[0318] The control unit (12) can control the charging and discharging of the power source (11). The control unit (12) can check the temperature of the power source (11) based on the output signal of the temperature sensor (131).

[0319] When a power line is connected to the battery terminal of the aerosol generating device (1), the control unit (12) can check whether the temperature of the power source (11) is higher than or equal to the first limit temperature, which is a criterion for blocking charging of the power source (11). If the temperature of the power source (11) is lower than the first limit temperature, the control unit (12) can control the power source (11) to be charged based on a preset charging current. If the temperature of the power source (11) is higher than or equal to the first limit temperature, the control unit (12) can block charging of the power source (11).

[0320] When the power of the aerosol generating device (1) is turned on, the control unit (12) can check whether the temperature of the power source (11) is higher than or equal to the second limit temperature, which is a standard for blocking discharge of the power source (11). If the temperature of the power source (11) is lower than the second limit temperature, the control unit (12) can control to use the power stored in the power source (11). If the temperature of the power source (11) is higher than or equal to the second limit temperature, the control unit (12) can stop using the power stored in the power source (11).

[0321] The control unit (12) can calculate the remaining capacity of the power stored in the power source (11). For example, the control unit (12) can calculate the remaining capacity of the power source (11) based on the voltage and / or current sensing values ​​of the power source (11).

[0322] The control unit (12) can determine whether a stick is inserted into the insertion space through the insertion detection sensor (133). The control unit (12) can determine that the stick is inserted based on the output signal of the insertion detection sensor (133). If it is determined that the stick is inserted into the insertion space, the control unit (12) can control to supply power to the cartridge heater (24) and / or the heater (18). For example, the control unit (12) can supply power to the cartridge heater (24) and / or the heater (18) based on the temperature profile stored in the memory (17).

[0323] The control unit (12) can determine whether the stick is removed from the insertion space. For example, the control unit (12) can determine whether the stick is removed from the insertion space through the insertion detection sensor (133). For example, the control unit (12) can determine that the stick is removed from the insertion space when the temperature of the heater (18) is higher than a limited temperature or when the temperature change slope of the heater (18) is higher than a set slope. When it is determined that the stick is removed from the insertion space, the control unit (12) can cut off the power supply to the cartridge heater (24) and / or the heater (18).

[0324] The control unit (12) can control the power supply time and / or power supply amount to the heater (18) according to the state of the stick detected by the sensor (13). The control unit (12) can check the level range that includes the level of the signal of the capacitance sensor based on a lookup table. The control unit (12) can determine the moisture content of the stick according to the checked level range.

[0325] When the stick is in an over-humidified state, the control unit (12) can control the power supply time to the heater (18) to increase the preheating time of the stick compared to the normal state.

[0326] The control unit (12) can determine whether the stick inserted into the insertion space has been reused through the reuse detection sensor (134). For example, the control unit (12) can compare the sensing value of the signal of the reuse detection sensor with a first reference range that includes a first color, and if the sensing value is included in the first reference range, it can determine that the stick has not been used. For example, the control unit (12) can compare the sensing value of the signal of the reuse detection sensor with a second reference range that includes a second color, and if the sensing value is included in the second reference range, it can determine that the stick has been used. If it is determined that the stick has been used, the control unit (12) can cut off the supply of power to the cartridge heater (24) and / or the heater (18).

[0327] The control unit (12) can determine whether the cartridge is coupled and / or removed through the cartridge detection sensor (135). For example, the control unit (12) can determine whether the cartridge is coupled and / or removed based on the sensing value of the signal of the cartridge detection sensor.

[0328] The control unit (12) can determine whether the aerosol generating material of the cartridge is exhausted. For example, the control unit (12) can preheat the cartridge heater (24) and / or the heater (18) by applying power, and determine whether the temperature of the cartridge heater (24) exceeds a limited temperature during the preheating period. If the temperature of the cartridge heater (24) exceeds the limited temperature, the control unit (12) can determine that the aerosol generating material of the cartridge is exhausted. If the control unit (12) determines that the aerosol generating material of the cartridge is exhausted, the control unit (12) can cut off the supply of power to the cartridge heater (24) and / or the heater (18).

[0329] The control unit (12) can determine whether the cartridge is usable. For example, the control unit (12) can determine that the cartridge is unusable if the current number of puffs is greater than or equal to the maximum number of puffs set for the cartridge based on data stored in the memory (17). For example, the control unit (12) can determine that the cartridge is unusable if the total time that the heater (24) has been heated is greater than or equal to the preset maximum time or the total amount of power supplied to the heater (24) is greater than or equal to the preset maximum amount of power.

[0330] The control unit (12) can make a judgment regarding the user's inhalation through the puff sensor (132). For example, the control unit (12) can determine whether a puff has been generated based on the sensing value of the signal of the puff sensor. For example, the control unit (12) can determine the intensity of the puff based on the sensing value of the signal of the puff sensor (132). If the number of puffs reaches a preset maximum number of puffs or if no puffs are detected for a preset time or longer, the control unit (12) can cut off the supply of power to the cartridge heater (24) and / or heater (18).

[0331] The control unit (12) can determine whether the cap is attached and / or removed through the cap detection sensor (136). For example, the control unit (12) can determine whether the cap is attached and / or removed based on the sensing value of the signal of the cap detection sensor.

[0332] The control unit (12) can control the output unit (14) based on the result detected by the sensor (13). For example, when the number of puffs counted through the puff sensor (132) reaches a preset number, the control unit (12) can notify the user that the aerosol generating device (1) will soon be terminated through at least one of the display (141), the haptic unit (142), and the audio output unit (143). For example, the control unit (12) can notify the user through the output unit (14) based on a determination that a stick is not present in the insertion space. For example, the control unit (12) can notify the user through the output unit (14) based on a determination that a cartridge and / or cap is not mounted. For example, the control unit (12) can transmit information about the temperature of the cartridge heater (24) and / or the heater (18) to the user through the output unit (14).

[0333] The control unit (12) can store and update the history of events that have occurred in the memory (17) based on the occurrence of a predetermined event. The event may include operations such as detection of insertion of a stick, initiation of heating of the stick, detection of puff, termination of puff, detection of overheating of the cartridge heater (24) and / or heater (18), detection of overvoltage application to the cartridge heater (24) and / or heater (18), termination of heating of the stick, power on / off of the aerosol generating device (1), initiation of charging of the power source (11), detection of overcharge of the power source (11), termination of charging of the power source (11), etc. performed in the aerosol generating device (1). The history of the event may include the date and time when the event occurred, log data corresponding to the event, etc. For example, when the predetermined event is detection of insertion of a stick, the log data corresponding to the event may include data on the sensing value of the insertion detection sensor (133), etc. For example, if a given event is overheating detection of the cartridge heater (24) and / or heater (18), log data corresponding to the event may include data on the temperature of the cartridge heater (24) and / or heater (18), the voltage applied to the cartridge heater (24) and / or heater (18), the current flowing through the cartridge heater (24) and / or heater (18), etc.

[0334] The control unit (12) can control to form a communication link with an external device, such as a user's mobile terminal. When data regarding authentication is received from the external device through the communication link, the control unit (12) can release the restriction on the use of at least one function of the aerosol generating device (1). Here, the data regarding authentication can include data indicating completion of user authentication for a user corresponding to the external device. The user can perform user authentication through the external device. The external device can determine whether user data is valid based on the user's birthday, a unique number representing the user, etc., and can receive data regarding the use authority of the aerosol generating device (1) from an external server. The external device can transmit data indicating completion of user authentication to the aerosol generating device (1) based on the data regarding the use authority. When the user authentication is completed, the control unit (12) can release the restriction on the use of at least one function of the aerosol generating device (1). For example, the control unit (12) can release the restriction on the use of the heating function that supplies power to the heater (18) when user authentication is completed.

[0335] The control unit (12) can transmit data on the status of the aerosol generating device (1) to an external device via a communication link formed with the external device. Based on the received status data, the external device can output the remaining capacity, operation mode, etc. of the power supply (11) of the aerosol generating device (1) via a display of the external device.

[0336] An external device may transmit a location search request to the aerosol generating device (1) based on an input that initiates location search of the aerosol generating device (1). When receiving a location search request from the external device, the control unit (12) may control at least one of the output devices to perform an operation corresponding to the location search based on the received location search request. For example, in response to the location search request, the haptic unit (142) may generate vibration. For example, in response to the location search request, the display (141) may output an object corresponding to the location search and the end of the search.

[0337] The control unit (12) can control to perform a firmware update when receiving firmware data from an external device. The external device can check the current version of the firmware of the aerosol generating device (1) and determine whether a new version of the firmware exists. When an input requesting firmware download is received, the external device can receive a new version of the firmware data and transmit the new version of the firmware data to the aerosol generating device (1). The control unit (12) can control to perform a firmware update of the aerosol generating device (1) upon receiving a new version of the firmware data.

[0338] The control unit (12) can transmit data on the sensing value of at least one sensor (13) to an external server (not shown) through the communication unit (16), and receive and store a learning model generated by learning the sensing value through machine learning such as deep learning from the server. The control unit (12) can perform an operation of determining a user's inhalation pattern, an operation of generating a temperature profile, etc. using the learning model received from the server. The control unit (12) can store, in the memory (17), the sensing value data of at least one sensor (13) and data for learning an artificial neural network (ANN). For example, the memory (17) can store a database for each component provided in the aerosol generating device (1) for learning the artificial neural network (ANN), and weights and biases forming the artificial neural network (ANN) structure. The control unit (12) can learn data on the sensing values ​​of at least one sensor (13), the user's suction pattern, the temperature profile, etc., stored in the memory (17), and generate at least one learning model used for determining the user's suction pattern, generating the temperature profile, etc.

[0339] Any or all of the embodiments of the present disclosure described above are not mutually exclusive or distinct. Any or all of the embodiments of the present disclosure described above may have their respective components or functions combined or used together.

[0340] For example, it means that a configuration A described in a particular embodiment and / or drawing can be combined with a configuration B described in another embodiment and / or drawing. That is, even if a combination between configurations is not directly described, it means that a combination is possible, except in cases where a combination is described as impossible.

[0341] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. A body including an insertion space for accommodating an aerosol generating article; A heater for heating the aerosol generating article accommodated in the insertion space; An inductive sensor that generates a sensing value corresponding to the distance from a magnetic material; and A control unit electrically connected to the inductive sensor and comparing the sensing value with a reference value that serves as a basis for judgment to determine the degree to which the magnetic body is close to the body; An aerosol generating device in which the control unit calibrates the reference value based on the sensed value so that the reference value maintains a predetermined difference in relation to the sensed value.

2. In paragraph 1, An aerosol generating device, wherein when the sensing value changes and the changed sensing value does not fall within a predetermined range, the control unit corrects the reference value based on the changed sensing value.

3. In paragraph 1, Further comprising a cap detachably coupled to one end of the above body, The above inductive sensor generates the sensing value corresponding to the distance from the cap including the magnetic body, An aerosol generating device in which the control unit determines whether the cap is coupled to the body based on the reference value and the sensing value.

4. In paragraph 1, The above inductive sensor generates the sensing value corresponding to the distance from the aerosol generating article including a magnetic body, An aerosol generating device, wherein the control unit determines whether the aerosol generating product is received in the insertion space based on the reference value and the sensing value.

5. In paragraph 1, An aerosol generating device in which the above control unit corrects the reference value based on the sensing value at a specific point in time.

6. In paragraph 1, An aerosol generating device wherein the above control unit corrects the above reference value at predetermined intervals.

7. In paragraph 6, An aerosol generating device, wherein when a predetermined point in time for correcting the reference value according to the predetermined cycle is reached, the control unit corrects the reference value to follow the change in the sensing value for the previous cycle based on the predetermined point in time.

8. In paragraph 6, An aerosol generating device wherein the control unit maintains the reference value even though a predetermined point in time for correcting the reference value according to the predetermined cycle has been reached before a predetermined time has elapsed since the start of heating of the heater.

9. In paragraph 1, The above control unit is an aerosol generating device that corrects the reference value when a predetermined time has passed since the start of heating of the heater.

10. In paragraph 1, Further comprising a temperature sensor for sensing the temperature of the above heater, An aerosol generating device in which the control unit determines the temperature of the heater in response to a signal generated by the temperature sensor, and corrects the reference value when the temperature of the heater reaches a predetermined temperature.

11. A body including an insertion space for accommodating an aerosol generating article; A heater for heating the aerosol generating article accommodated in the insertion space; An inductive sensor that generates a sensing value corresponding to the distance from a magnetic material; and A control unit electrically connected to the inductive sensor and determining the degree to which a magnetic body is close to the body based on the sensing value; An aerosol generating device wherein the control unit calibrates the sensing value so that the sensing value becomes equal to a predetermined initial value.

12. In paragraph 11, The above control unit is an aerosol generating device that corrects the sensing value when a predetermined time has passed since the start of heating of the heater.

13. In paragraph 11, The above control unit, The above sensing value is corrected at regular intervals, An aerosol generating device that maintains the sensing value even though a predetermined point in time for correcting the sensing value according to the predetermined cycle has been reached before a predetermined time has elapsed since the start of heating of the heater.

14. In paragraph 11, Further comprising a temperature sensor for sensing the temperature of the above heater, An aerosol generating device in which the control unit determines the temperature of the heater in response to a signal generated by the temperature sensor, and corrects the sensing value when the temperature of the heater reaches a predetermined temperature.

15. In paragraph 14, An aerosol generating device, wherein the control unit sets the sensing value to the predetermined initial value when the temperature of the heater reaches a predetermined temperature.

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