Aerosol delivery device with sensor coil

Abstract

An aerosol delivery device configured to receive at least a portion of an article including an aerosol-generating material, the aerosol delivery device including a sensor coil and a processor configured to detect a reactance associated with the sensor coil resulting from the article being received by the aerosol delivery device, and to determine article information from the reactance.

Description

[Technical Field]

[0001] The present invention relates to an aerosol delivery device and an aerosol delivery system. [Background technology]

[0002] Smoking articles, such as cigarettes and cigars, burn tobacco to produce tobacco smoke during use. Attempts have been made to provide alternatives to these tobacco-burning articles by creating products that release compounds without burning. An example of such a product is a heating device that releases compounds by heating a material without burning it. The material may be, for example, tobacco or other non-tobacco products, and may or may not contain nicotine. Summary of the Invention

[0003] According to a first aspect, there is provided an aerosol delivery device configured to accept at least a portion of an article including an aerosol-generating material, the aerosol delivery device comprising: a sensor coil; and a processor configured to detect a reactance associated with the sensor coil resulting from acceptance of the article by the aerosol delivery device, and to determine article information from the reactance.

[0004] The processor may be configured to determine a resonant frequency of the coil to determine the reactance of the sensor coil.

[0005] The aerosol delivery device may include a receptacle configured to receive a portion of the article, the sensor coil at least partially surrounding the receptacle.

[0006] The processor may be configured to authenticate the item in response to the item information.

[0007] The processor may be configured to select a heating session in response to the item information.

[0008] The processor may be configured to modify the heating profile in response to a characteristic of the article.

[0009] The processor may be configured to modify the session length in response to a characteristic of the item.

[0010] The processor may be configured to modify the operating temperature in response to a property of the article.

[0011] The item information may include the presence of the item in the aerosol delivery device.

[0012] The item information may include the type of item.

[0013] The item information may include a unique item identifier.

[0014] The reactance may include an inductance.

[0015] The reactance may include an inductance measured across the sensor coil, and the processor is configured to determine the item information from the inductance.

[0016] The aerosol delivery device may include an aerosol generator that includes a heater coil.

[0017] The sensor coil may be adjacent to a heater coil of the aerosol generator.

[0018] The sensor coil may be within the pitch of the heater coil.

[0019] The sensor coil may surround the heater coil.

[0020] The sensor coil may be longitudinally displaced relative to the heater coil.

[0021] The sensor coil may be positioned closer to the mouth end of the aerosol generating device than the heater coil.

[0022] The sensor coil may include more than 50 turns.

[0023] The reactance may include capacitance.

[0024] The reactance may include a capacitance measured between the sensor coil and the heater coil, and the processor is configured to determine the item information from the capacitance.

[0025] The aerosol delivery device may include an amplifier configured to amplify the output from the sensor coil.

[0026] The sensor coil may be formed on a flexible printed circuit board (PCB).

[0027] The aerosol delivery device may include an article sensor positioned to detect insertion of an article into the aerosol delivery device, and the processor may be configured to detect a change in capacitance of the sensor coil in response to the article sensor detecting the insertion of the article.

[0028] The article sensor may comprise a Hall sensor configured to detect a change in a magnetic field resulting from receipt of an article by the aerosol delivery device.

[0029] The article sensor may comprise a mechanical sensor that is actuable by insertion of an article into the aerosol delivery device.

[0030] The article sensor may comprise an optical sensor configured to receive light from the article, the light may be reflected from the article, and an optical transmitter configured to transmit light to the article and cause the light to reflect from the article.

[0031] The article sensor may comprise a laser sensor.

[0032] The item sensor may include a camera configured to receive an image from the item.

[0033] The aerosol delivery device may be a tobacco heating product.

[0034] According to a second aspect, an article is provided that includes an aerosol-forming material.

[0035] The article may include a heatable element, which may be formed of a metal or metal alloy, and which may be configured to generate heat upon penetration with a varying magnetic field resulting from a change in current in a heater coil.

[0036] According to a third aspect, there is provided an aerosol delivery system comprising an aerosol delivery device according to the first aspect and an article according to the second aspect.

[0037] According to a fourth aspect, there is provided a method of operating an aerosol delivery device, the method comprising detecting reactance associated with a sensor coil resulting from the receipt of an item by the aerosol delivery device and determining item information from the capacitance.

[0038] The aerosol delivery system may include any of the features described with respect to the aerosol delivery device and / or article. The method may include any of the features or steps described with respect to the aerosol delivery device, article, and / or aerosol delivery system. [Brief explanation of the drawings]

[0039] Embodiments will now be described, by way of example only, with reference to the accompanying drawings, in which: [Figure 1] FIG. 1 shows a side view of an aerosol delivery system. [Figure 2] 1 shows a perspective view of an article. [Figure 3]1 shows a schematic cross-sectional view of an aerosol delivery system. [Figure 4] 1 shows a schematic cross-sectional view of an aerosol delivery system. [Figure 5] 1 shows a schematic cross-sectional view of an aerosol delivery system. [Figure 6] 1 shows a schematic diagram of an aerosol delivery system. [Figure 7] 1 shows a schematic diagram of an aerosol delivery system. DETAILED DESCRIPTION OF THE INVENTION

[0040] As used herein, the term "aerosol-generating material" refers to a material that can generate an aerosol when energized, for example, by heating, irradiation, or any other method. Aerosol-generating materials may be in the form of, for example, a solid, liquid, or gel, which may or may not contain active substances and / or flavorings. Aerosol-generating materials may include any plant-based material, such as tobacco-containing materials, including, for example, one or more of tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. Aerosol-generating materials may also include other non-tobacco products, which may or may not contain nicotine, depending on the product. Aerosol-generating materials may be in the form of, for example, a solid, liquid, gel, or wax. Aerosol-generating materials may also be, for example, a combination or blend of materials. Aerosol-generating materials may also be known as "smokable materials."

[0041] The aerosol-forming material may include a binder and an aerosol-forming agent. Optionally, an active agent and / or a filler may also be present. Optionally, a solvent, such as water, may also be present, in which one or more other components of the aerosol-forming material may or may not be soluble. In some embodiments, the aerosol-forming material is substantially free of plant material. In some embodiments, the aerosol-forming material is substantially free of tobacco.

[0042] The aerosol-generating material may include or be an "amorphous solid." The amorphous solid may be a "monolithic solid." In some embodiments, the amorphous solid may be a dry gel. An amorphous solid is a solid material that may retain some fluid, such as a liquid, within the amorphous solid. In some embodiments, the aerosol-generating material may contain, for example, from about 50%, 60%, or 70% amorphous solid by weight, up to about 90%, 95%, or 100% amorphous solid by weight.

[0043] The aerosol-generating material may include an aerosol-generating film. The aerosol-generating film may include or be a sheet that may optionally be shredded to form a shredded sheet. The aerosol-generating sheet or shredded sheet may be substantially free of tobacco.

[0044] According to the present disclosure, a "non-combustion" aerosol delivery system is one in which the constituent aerosol-generating materials (or components thereof) of the aerosol delivery system are not combusted or burned to facilitate delivery of at least one substance to a user.

[0045] In some embodiments, the delivery system is a non-combustion aerosol delivery system, such as a powered non-combustion aerosol delivery system.

[0046] In some embodiments, the non-combustion aerosol delivery system is a vaporization device or an electronic cigarette, also known as an electronic nicotine delivery system (END), although it should be noted that the presence of nicotine in the aerosol-generating material is not a requirement.

[0047] In some embodiments, the non-combustion aerosol delivery system is an aerosol-generating material heating system, also known as a non-combustion heating system. An example of such a system is a tobacco heating system.

[0048] In some embodiments, the non-combustion aerosol delivery system is a hybrid system that generates an aerosol using a combination of aerosol-generating materials, where one or more aerosol-generating materials can be heated. Each of the aerosol-generating materials can be, for example, in solid, liquid, or gel form and can contain nicotine or not. In some embodiments, the hybrid system includes a liquid or gel aerosol-generating material and a solid aerosol-generating material. The solid aerosol-generating material can include, for example, tobacco or a non-tobacco product.

[0049] Typically, a non-combustion aerosol delivery system may include a non-combustion aerosol delivery device and a consumable item for use with the non-combustion aerosol delivery device.

[0050] In some embodiments, the present disclosure relates to consumables, sometimes referred to as articles throughout this disclosure, that include aerosol-generating materials and are configured for use with non-combustion aerosol delivery devices.

[0051] In some embodiments, the non-combustion aerosol delivery system, e.g., the non-combustion aerosol delivery device, can include a power source and a controller. The power source can be, for example, an electrical power source or a heat-generating power source. In some embodiments, the heat-generating power source includes a carbon substrate that can be energized to deliver power in the form of heat to an aerosol-generating material or a heat-transfer material proximate the heat-generating power source.

[0052] In some embodiments, the non-combustion aerosol delivery system may include an area for receiving consumables, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter, and / or an aerosol modifier.

[0053] In some embodiments, consumables for use with non-combustion aerosol delivery devices may include aerosol-generating materials, aerosol-generating material storage areas, aerosol-generating material transfer components, aerosol generators, aerosol-generating areas, housings, packaging, filters, mouthpieces, and / or aerosol modifiers.

[0054] The aerosol-generating device can accept an article containing an aerosol-generating material for heating. An "article" in this context is a component that includes or contains the aerosol-generating material when used, and optionally other components when used, that is heated to volatilize the aerosol-generating material. A user may insert the article into the aerosol-generating device before the article is heated to generate an aerosol, and the user then inhales the aerosol. The article may be of a predetermined or specific size, for example, configured to be placed in a heating chamber of the device sized to accept the article.

[0055] 1 , an aerosol delivery system 10 includes an aerosol delivery device 100 for generating an aerosol from an aerosol-generating material. The aerosol delivery system 10 further includes a replaceable article 110 that includes the aerosol-generating material. Generally, the aerosol-forming device 100 may be used to heat the article 110 to generate an aerosol or other inhalable medium that is inhaled by a user of the device 100.

[0056] The aerosol-forming device 100 comprises a body 102. A housing structure surrounds and houses various components of the body 102. An article opening 104 is formed at one end of the body 102, through which an article 110 can be inserted for heating by the aerosol generator 200.

[0057] Device 100 may also include a user-operable control element 150, such as a button or switch, that, when pressed, operates device 100. For example, a user can turn device 100 on by operating switch 150.

[0058] The aerosol generator 200 defines a longitudinal axis that is aligned with the axis of the article 110 .

[0059] In use, the article 110 may be fully or partially inserted into the aerosol generator 200 and may be heated by one or more components of the aerosol generator 200 .

[0060] The device 100 includes an apparatus for heating an aerosol-generating material. The apparatus includes an aerosol-generating assembly, a controller (control circuitry), and a power source. The apparatus forms part of the body 102. The aerosol-generating assembly is configured to heat the aerosol-generating material of an article 110 inserted through the article opening 104 so that an aerosol is generated from the aerosol-generating material. The power source provides power to the aerosol-generating assembly, which converts the provided electrical energy into thermal energy for heating the aerosol-generating material. The power source may be, for example, a battery, such as a rechargeable or non-rechargeable battery. Examples of suitable batteries include, for example, lithium batteries (such as lithium-ion batteries), nickel batteries (such as nickel-cadmium batteries), and alkaline batteries.

[0061] The power source may be electrically coupled to the aerosol generation assembly and may provide power to heat the aerosol-generating material when needed under the control of the controller. The control circuitry may be configured to activate and deactivate the aerosol generation assembly based on user input. The user input may be via a button press or the opening of a door on the device (e.g., a door covering a consumable receiving receptacle). The control circuitry may be configured to activate and deactivate automatically, for example, upon insertion of an item.

[0062] The aerosol-generating assembly may include various components for heating the aerosol-generating material via an induction heating process. Induction heating is a process of heating an electrically conductive heating element (such as a susceptor) by electromagnetic induction. The induction heating assembly may include an induction element, such as one or more inductor coils, and a device for applying a variable current, such as an alternating current, to the induction element. The variable current in the induction element generates a varying magnetic field. The varying magnetic field penetrates a susceptor (heating element) appropriately positioned relative to the induction element, generating eddy currents within the susceptor. The susceptor has an electrical resistance to the eddy currents, and therefore, the flow of eddy currents against this resistance heats the susceptor via Joule heating. If the susceptor includes a ferromagnetic material such as iron, nickel, or cobalt, heat may also be generated by magnetic hysteresis losses within the susceptor, i.e., by a change in the orientation of magnetic dipoles within the magnetic material as a result of alignment with the varying magnetic field. Induction heating generates heat within the susceptor, allowing for rapid heating, as compared to heating by conduction, for example. Furthermore, no physical contact is required between the inductive element and the susceptor, allowing for greater flexibility in construction and application.

[0063] 2, the article 110 includes an indicator portion 112. The indicator portion 112 is on an outer surface 114 of the article 110. The outer surface 114 may be formed from paper, with the indicator portion 112 printed on the paper. The indicator portion 112 is a band that surrounds the article 110. The indicator portion 112 surrounds the article 110. The indicator portion 112 is a colored portion.

[0064] 3, a portion of an article 110 is received in a receptacle 106 of the aerosol delivery device 100. The receptacle 106 is a cylindrical chamber that extends from the article opening 104 into the body 102. The article 110 is inserted into the receptacle 106 through the opening 104 such that the identifier 112 is aligned with the receptacle 106. The receptacle 106 is defined by a wall 108.

[0065] The aerosol delivery device 100 includes an aerosol generator 200. The aerosol generator 200 is a heating assembly. The aerosol generator 200 includes an inductive element 202. The inductive element 202 is an inductive coil that surrounds a receptacle 106. The aerosol generator 200 includes a susceptor element 108, which in this embodiment is a wall 108.

[0066] Aerosol delivery device 100 includes article sensor 116. Receptacle 108 includes opening 109. Article sensor 116 is disposed in opening 109. Article sensor 116 is disposed outside receptacle 108 beyond opening 109 such that article sensor 116 is in optical communication with the receptacle through opening 109. In some embodiments, wall 108 includes a translucent portion, and article sensor 116 is located outside wall 108 beyond the translucent portion.

[0067] The article sensor 116 is positioned such that the indicator portion 112 is aligned with the article sensor 116 when the article 110 is received in the receptacle 106. In this example, the article sensor 116 is an optical sensor comprising an optical transmitter and an optical receiver. In some examples, the article sensor may be a laser sensor. In some examples, the optical receiver may be a camera.

[0068] The aerosol delivery device 100 includes a processor 118 in data communication with the article sensor 116 .

[0069] Aerosol delivery device 100 includes a reactance sensor. The reactance sensor includes a sensor coil 120. Aerosol delivery device 100 includes an amplifier 114 configured to amplify a signal from sensor coil 120.

[0070] The sensor coil 120 surrounds the receptacle, and thereby the article 110 in use. The sensor coil 120 is adjacent to the inductive element 202. The sensor coil 120 surrounds the inductive element 202. The sensor coil 120 is formed on a flexible printed circuit board (PCB). The sensor coil 120 includes at least 50 turns, and more specifically, substantially 100 turns.

[0071] During use, a user inserts an item 110 into aerosol delivery device 100. Article sensor 116 transmits a first optical signal to indicator portion 112. The first optical signal reflects from indicator portion 112 to provide a second optical signal. The second optical signal is received by article sensor 116. Processor 118 determines from the second optical signal that the item has been accepted by the aerosol delivery device. In other examples, article sensor 116 is omitted, and sensor coil 120 determines that item 110 has been accepted by aerosol delivery device 100 (e.g., from a change in reactance associated with the sensor coil).

[0072] In response to determining that an item has been accepted by the aerosol delivery device, processor 118 performs an item identification process. During the item identification process, processor 118 detects the reactance associated with sensor coil 120. Examples of reactance associated with sensor coil 120 are described below with reference to FIGS. 6 and 7. Amplifier 114 amplifies the signal from sensor coil 120 to enable the processor to detect the reactance. Processor 118 can determine the electrical resonant frequency of sensor coil 120 to determine the reactance associated with sensor coil 120.

[0073] The reactance depends on the characteristics of the article 110 received by the aerosol delivery device 102. Thus, the reactance indicates article information. Specifically, the article 110 may include a metallic material, and the reactance depends on the properties of the metallic material, such as the dimensions of the material, its thickness, its magnetic permeability, its position within the article, and its spacing from the sensor coil. The metallic material may be in the form of a foil, such as aluminum foil. The metallic material may also form part of a heating assembly or function as a susceptor.

[0074] The item information includes the type of item, and in some examples, the item information includes the authentication status of the item.

[0075] The aerosol generator 200 generates an aerosol from the article 110 in response to user actuation of the user-controllable element 150. The aerosol-delivery device 100 supplies an alternating current to the inductor element 202, which causes the susceptor element 108 to heat the aerosol-generating material of the article 110.

[0076] The susceptor element 108 heats the aerosol-generating material by applying a heating profile at an operating temperature over an aerosol-generation session. The heating profile may depend on the article information, with different heating profiles applied to different types of articles. The operating temperature depends on the article information, with the aerosol-generating material heated to different operating temperatures for different types of articles. The session length of the aerosol-generation session (i.e., the period of time the aerosol generator generates from the aerosol-generating material) depends on the article information, with different session lengths used for different types of articles.

[0077] In another example where the item information includes the authentication status of the item, in response to determining that the item is not authenticated for use with the aerosol delivery device, the processor 118 prevents the aerosol generation session from being initiated.

[0078] At the end of the aerosol-generating session, the aerosol generator 200 stops generating aerosol from the aerosol-generating material, and the user removes the item 110 from the aerosol delivery device 100 and discards the item 110.

[0079] 4 shows a second aerosol delivery system 1010 that includes a second aerosol delivery device 1102 that includes many of the same features as aerosol delivery system 10 and aerosol delivery device 102. A repeated description of those features will be omitted, and only the differences will be described here.

[0080] The second aerosol delivery device 1102 comprises a second sensor coil 122 and a second inductive element 204 (again, a heater coil). In contrast to the inductive element 202, the second inductive element 204 does not extend to the mouth end of the second aerosol delivery device 1102. The second sensor coil 122 is longitudinally displaced relative to the heater coil 204. The second sensor coil 122 is adjacent to the heater coil 204. The second sensor coil 122 is radially aligned with the heater coil 204. The second sensor coil 122 is closer to the mouth end of the aerosol generation device than the heater coil 204. The second aerosol delivery system 110 operates similarly to the aerosol delivery system 10.

[0081] 5 shows a third aerosol delivery system 2010 comprising a third aerosol delivery device 2102 that includes many of the same features as aerosol delivery system 10 and aerosol delivery device 102. A repeated description of those features will be omitted and only the differences will be described here.

[0082] Third aerosol delivery device 2102 includes third sensor coil 124 and third inductive element 206. Third inductive element 206 is heater coil 206. Third sensor coil 124 is wound within heater coil 206. Third sensor coil 124 extends over substantially the entire longitudinal length of heater coil 206.

[0083] 6 and 7 show an aerosol delivery system 600 that includes many of the same features as aerosol delivery system 10 to illustrate how the reactance associated with the sensor coil is determined. A repeated description of those features will be omitted, and only the differences will be described here. For clarity, some features have also been omitted from the drawings.

[0084] 6 and 7, the aerosol delivery device includes a fourth sensor coil 602 and a fourth inductive element 603 (also known as a heater coil 603). A second terminal 604b of the sensor coil 602 is connected to analog ground. Terminals 704a and 704b on either side of the heater coil 603 are connected to an inductive power circuit for supplying power to the heater coil 603 for heating.

[0085] 6, the reactance associated with the fourth sensor coil 602 includes an inductance L measured across the sensor coil 602. The inductance L is measured across terminals 604a, 604b on either side of the sensor coil 602 (e.g., by connecting a sensing circuit to those terminals). The value of the inductance L may change when the item 110 is inserted into the receptacle 106. This is caused by a change in magnetic permeability within the area enclosed by the sensor coil 602, which change in magnetic permeability is dependent on the characteristics of the item 110. In use, a processor detects the inductance L and determines item information (described above) from the inductance L.

[0086] In the configuration of FIG. 7 , the reactance associated with the sensor coil 602 includes a capacitance C measured between the sensor coil 602 and the fourth inductive element 603. In this arrangement, the sensor coil 602 functions as a first plate of a capacitor, and the heater coil 603 functions as a second plate of the capacitor. In this embodiment, the capacitance C is measured across the first terminal 604 a of the sensor coil 602 and the first terminal 704 a of the heater coil 603 (e.g., by connecting a sensing circuit to those terminals). The first terminal 604 a of the sensor coil 602 and the first terminal 704 a of the heater coil 603 are adjacent, with no coil disposed between them. In other embodiments, the capacitance may instead be measured across the second terminal 604 b of the sensor coil 602 and / or the second terminal 704 b of the heater coil 603, such that the sensor coil 602 and / or the heater coil 603 are between the terminals. In other embodiments, the capacitance may instead be measured across any combination of terminals, including terminals 604 a, 604 b of sensor coil 602 and terminals 704 a, 704 b of heater coil 603. The capacitance C value may change when item 110 is inserted into receptacle 106. This is caused by a change in the dielectric constant in the region between sensor coil 602 and heater coil 603, the change in dielectric constant depending on the properties of item 110.

[0087] 6 and 7 illustrate an exemplary configuration in which heater coil 603 is longitudinally displaced from sensor coil 602 and positioned closer to the mouth end of the aerosol delivery device than sensor coil 602. This is not to exclude other configurations that may be used when detecting inductance and capacitance values ​​in the aerosol delivery system described with respect to FIGS. 6 and 7. In particular, in other embodiments, capacitance (e.g., between the sensor coil and heater coil as in FIG. 7) and / or inductance (e.g., across the sensor coil as in FIG. 6) may be measured in a configuration (e.g., that described with respect to FIG. 4) in which heater coil 603 is longitudinally displaced from sensor coil 602 and sensor coil 602 is positioned closer to the mouth end of the aerosol delivery device than heater coil 603. In other embodiments, capacitance (e.g., between the sensor coil and heater coil as in FIG. 7) and / or inductance (e.g., across the sensor coil as in FIG. 6) may be measured in a configuration where the sensor coil 602 surrounds the heater coil 603 (e.g., as described with respect to FIG. 3). In other embodiments, capacitance (e.g., between the sensor coil and heater coil as in FIG. 7) and / or inductance (e.g., across the sensor coil as in FIG. 6) may be measured in a configuration where the sensor coil 602 is wound within the heater coil 603 (e.g., as described with respect to FIG. 5).

[0088] In some embodiments, the configurations shown in Figures 6 and 7 may be used simultaneously to measure both capacitance C and inductance L, thereby improving the accuracy of data regarding the insertion of item 110.

[0089] In the embodiments described above, the aerosol delivery device includes a heating element that is an induction heating element. In some embodiments, other types of heating elements, such as resistive heating, are used. The device configuration is generally as described above, and therefore a detailed description is omitted. In such configurations, the aerosol generation assembly includes a resistive heating generator including components for heating a heating element via a resistive heating process. In this case, an electric current is applied directly to the resistive heating element, and the resulting current flow in the heating element causes the heating element to heat by Joule heating. The resistive heating element includes a resistive material configured to generate heat when a suitable electric current passes through the resistive heating element, and the heating assembly includes electrical contacts for supplying the electric current to the resistive material.

[0090] In an embodiment, the heating element forms the resistive heating component itself, hi an embodiment, the resistive heating component transfers heat to the heating element, for example by conduction.

[0091] The various embodiments described herein are presented solely to aid in the understanding and teaching of the claimed features. These embodiments are provided only as a representative sample of embodiments and are not exhaustive and / or exclusive. The advantages, embodiments, examples, functions, features, structures, and / or other aspects described herein should not be construed as limitations on the scope of the invention as defined by the claims or limitations on the equivalents of the claims, and it should be understood that other embodiments may be utilized and modifications may be made without departing from the scope of the claimed invention. Various embodiments of the present invention may suitably comprise, consist of, or consist essentially of any suitable combination of the disclosed elements, components, features, parts, steps, means, etc., other than those specifically described herein. Furthermore, the present disclosure may include other inventions not currently claimed but which may be claimed in the future.

Claims

1. 1. An aerosol delivery device configured to receive at least a portion of an article including an aerosol-generating material, A sensor coil; an aerosol delivery device comprising: a processor configured to detect a reactance associated with the sensor coil resulting from the item being received by the aerosol delivery device; and a processor configured to determine item information from the reactance.

2. The aerosol delivery device of claim 1 , comprising a receptacle configured to receive the portion of the article, the sensor coil at least partially surrounding the receptacle.

3. The aerosol delivery device of claim 1 or 2, wherein the processor is configured to authenticate the item in response to the item information.

4. The aerosol delivery device of any one of claims 1 to 3, wherein the processor is configured to select a heating session in response to the product information.

5. The aerosol delivery device of claim 1 , wherein the item information includes the presence of the item in the aerosol delivery device and / or the type of the item.

6. The aerosol delivery device of any one of claims 1 to 5, wherein the reactance comprises an inductance measured across the sensor coil, and the processor is configured to determine the article information from the inductance.

7. 7. The aerosol delivery device of claim 1, comprising an aerosol generator, the aerosol generator comprising a heater coil, the sensor coil adjacent to the heater coil.

8. The aerosol delivery device of claim 7 , wherein the sensor coil is within a pitch of the heater coil of the aerosol generator.

9. The aerosol delivery device of claim 7 , wherein the sensor coil is longitudinally displaced relative to the heater coil.

10. The aerosol delivery device of claim 9 , wherein the sensor coil is positioned closer to the mouth end of the aerosol generation device than the heater coil.

11. 11. The aerosol delivery device of claim 7, wherein the reactance comprises a capacitance measured between the sensor coil and the heater coil, and the processor is configured to determine the article information from the capacitance.

12. The aerosol delivery device of any one of claims 1 to 11, wherein the sensor coil is formed on a flexible printed circuit board (PCB).

13. The aerosol delivery device of any one of claims 1 to 12, comprising an article sensor configured to detect insertion of an article into the aerosol delivery device.

14. An aerosol delivery system comprising the aerosol delivery device according to any one of claims 1 to 13 and the article.

15. A method of operating an aerosol delivery device, comprising detecting a reactance associated with a sensor coil and determining article information from the reactance.

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