Device for an aerosol provision apparatus

Abstract

An apparatus (2) for an aerosol provision device, the apparatus comprising a central controller (4) and a plurality of induction cells (7a-c). Each induction cell of the plurality of induction cells (7a-c) comprises a resonant circuit (6a-c) comprising an inductive element (8a-c) and a capacitive element (10a-c) configured to inductively heat a susceptor, and a local controller (12a-c). The local controller (12a-c) is configured to: receive one or more commands from the central controller (4); perform at least one action based on the one or more commands received from the central controller (4); and send feedback to the central controller (4).

Description

Technical Field

[0001] This invention relates to an apparatus and method of operating an aerosol supply device. The invention also relates to an aerosol supply device, an aerosol supply system, and a method for generating aerosols. Background Technology

[0002] Smoked products such as cigarettes and cigars burn tobacco during use to produce tobacco smoke. Efforts have been made to provide alternatives to these products by producing products that release compounds but do not burn. Examples of such products are so-called "heat-not-burn" products or tobacco heating devices or products that release compounds by heating a material that does not burn. This material can be, for example, tobacco or other non-tobacco products, which may or may not contain nicotine.

[0003] Aerosol supply systems covering the aforementioned devices or products are known. Common systems use a heater to generate an aerosol from a suitable medium, which is then inhaled by a user. Often, the medium used needs to be replaced or changed to provide a different aerosol for inhalation. Induction heating systems are known to be used as heaters to generate aerosols from a suitable medium. Induction heating systems typically include a magnetic field generating device for generating a changing magnetic field, and a sensor or heating material that can be heated by penetration through the changing magnetic field to heat the suitable medium. Summary of the Invention

[0004] According to one aspect, an apparatus for an aerosol supply device is provided, comprising: a central controller; and a plurality of resonant circuits. Each of the plurality of resonant circuits includes: an inductive element configured as an inductive heating sensor; and a capacitive element. Each of the plurality of resonant circuits is provided with a local controller. Each local controller is configured to: receive one or more commands from the central controller; perform at least one action based on the commands received from the central controller; and send feedback to the central controller.

[0005] The central controller can be configured to send one or more commands related to the operation of the device to the local controller.

[0006] The central controller can be configured to send one or more commands to the local controller related to one or more of the following: power on; power off; setting the power level to be applied through the resonant circuit; setting the duration of power on; The central controller can be configured to send commands including instructions to apply pulses to the corresponding resonant circuits. Each local controller can be configured to: receive commands from the central controller; apply pulses to the resonant circuits; receive feedback from the resonant circuits; and, based on the feedback from the resonant circuits, send that feedback to the central controller.

[0007] The pulse can be applied to the resonant circuit in heating operation mode.

[0008] The edge of the applied pulse can induce a pulse response between the capacitive and inductive elements of a resonant circuit. This pulse response can have a resonant frequency.

[0009] The feedback received by the local controller can be an estimate of the resonant frequency of the resonant circuit.

[0010] The feedback received by the local controller can be estimates of the following: voltage, power, resistance, (resonant) frequency, temperature and / or timing information related to any component of the resonant circuit.

[0011] Feedback received by the local controller can indicate the resonant circuit's response to an applied pulse. The feedback, indicating the resonant circuit's response to the applied pulse, can be the amplitude of the current and / or the estimated resonant frequency of the resonant circuit.

[0012] The feedback received by the local controller can be a measurement of the current flowing in the resonant circuit.

[0013] Feedback received by the local controller can be measurements of the following: voltage, power, resistance, (resonant) frequency, temperature, and / or timing information related to any component of the resonant circuit.

[0014] Each of the multiple resonant circuits may also include a bridge circuit configured to connect inductive and capacitive elements to a local controller.

[0015] The device may also include a power supply. The power supply can be configured to provide power to the central controller and each of the multiple local controllers.

[0016] Each of the multiple local controllers can be configured to process feedback received from the resonant circuit. A central controller can be configured to process feedback received from the resonant circuit. Both the local controller and the central controller can be configured to process feedback received from the resonant circuit.

[0017] Each of the multiple sensing units may also include a frequency estimation circuit. The frequency estimation circuit may be configured to: estimate the resonant frequency of the resonant circuit; and provide feedback to the local controller.

[0018] The central controller can be configured to: compare the estimated frequency with the target frequency; and control the triggering of the sampling operation mode based at least in part on the difference between the estimated frequency and the target frequency, wherein the estimated resonant frequency is updated during the sampling operation mode.

[0019] Each of the multiple sensing units may also include a current feedback circuit. The frequency estimation circuit can be configured to: measure the current flowing through the resonant circuit; and provide feedback to the local controller.

[0020] The central controller can be configured to: compare the estimated current with the target current; and control the triggering of the sampling operation mode based at least in part on the difference between the estimated current and the target current, wherein the determined resonant frequency is updated during the sampling operation mode.

[0021] Controlling the triggering of the sampling operation mode may include: triggering the sampling mode when the difference between the estimated current and the target current exceeds a threshold amount.

[0022] Triggering the control sampling operation mode may include setting the sampling period based at least in part on the difference between the estimated current and the target current, wherein the sampling period defines the interval between successive sampling operation modes of the inductor element.

[0023] Triggering the control sampling operation mode may include decreasing the sampling mode period if the estimated current flowing in the induction heater decreases. The method may also include increasing the sampling mode period if the estimated current flowing in the induction heater increases.

[0024] The device may include any number of resonant circuits. The device may include between four and twelve resonant circuits. The device may include ten resonant circuits.

[0025] The central controller can be configured to send control signals to each local controller to operate each inductive element.

[0026] The central controller can interact with each local controller independently. The central controller can interact with two or more local controllers simultaneously. The central controller can interact with all local controllers simultaneously.

[0027] According to another aspect, an aerosol supply device including the apparatus described above is provided.

[0028] Aerosol supply equipment may include a heated chamber for removably receiving articles containing aerosol-generating materials.

[0029] The inductive elements of multiple resonant circuits can be arranged along the sidewall of the heating chamber. The aerosol supply device may include at least four inductive elements arranged along the sidewall of the heating chamber. The aerosol supply device may include at least five inductive elements arranged along the sidewall of the heating chamber. The aerosol supply device may include inductive elements arranged in a grid pattern along the sidewall of the heating chamber, such as a 2x4 grid or a 2x5 grid.

[0030] The inductors of multiple resonant circuits can be arranged along two side walls of the heating chamber. Alternatively, the inductors can be arranged along two opposite side walls of the heating chamber. The inductors can be arranged in two arrays, each array comprising at least four inductors. Or, the inductors can be arranged in two arrays, each array comprising five inductors.

[0031] An inductor can be a planar coil. An inductor can be a planar spiral inductor. An inductor can be a planar non-spiral inductor. An inductor can be substantially square. An inductor can be substantially rectangular. An inductor can be trapezoidal.

[0032] Inductive components can be mounted on a printable circuit board (PCB).

[0033] Aerosol supply devices may include sensors disposed within a heated chamber. Aerosol supply devices may include two or more sensors. Aerosol supply devices may include multiple sensors, each associated with a corresponding inductive element.

[0034] The inductor can be a spiral inductor coil that surrounds the heating chamber.

[0035] The aerosol supply device may include a power source. The power source may be aligned along the longitudinal axis of the heating chamber. The power source may also be aligned along a second longitudinal axis parallel to the longitudinal axis of the heating chamber.

[0036] Aerosol supply devices may include hinged doors or removable portions of the housing to allow access to the chamber, enabling users to insert and / or remove aerosol-generated articles. Aerosol supply devices may be configured for wireless charging.

[0037] According to another aspect, an aerosol supply system is provided, comprising the aerosol supply device described above and an article containing aerosol generating materials.

[0038] Aerosol supply devices may include sensors disposed within a chamber. Aerosol supply devices may include two or more sensors.

[0039] The product can be cylindrical or rod-shaped.

[0040] The article may be substantially flat. The article may include a carrier component. The carrier component may include aerosol-generating material disposed on the carrier component. The aerosol-generating material may be configured as a continuous layer of aerosol-generating material. The aerosol-generating material may be configured as multiple discrete portions of aerosol-generating material.

[0041] The carrier component may include a heating layer. The carrier component may include a heating layer and a support layer.

[0042] The article may include one or more sensory elements.

[0043] The article may include a single sensor element. A single sensor element may include multiple sensor portions. When the article is inserted into the device, the multiple sensor portions may be aligned with multiple induction heating elements disposed in the aerosol supply device.

[0044] The product can be equipped with multiple sensors. When the product is inserted into the device, the multiple sensors can be aligned with multiple induction heating elements disposed in the aerosol supply device.

[0045] The aerosol supply system may also include a charging unit having a cavity for removably receiving the aerosol supply device.

[0046] According to another aspect, a method for generating an aerosol is provided, comprising: providing an aerosol supply system as described above; and inserting an aerosol generating article at least partially into a chamber.

[0047] According to another aspect, a method is provided for controlling an apparatus for an aerosol supply device, the apparatus including a plurality of sensing units, each sensing unit including a local controller and a resonant circuit, the method comprising: step a) sending one or more commands from a central controller to at least one of the plurality of local controllers; step b) having at least one of the plurality of local controllers perform at least one action based on the one or more commands received from the central controller; and step c) sending feedback from at least one of the plurality of local controllers to the central controller.

[0048] Step a) may include sending one or more commands related to the operation of the device to multiple local controllers.

[0049] Step a) may include sending one or more commands to multiple local controllers related to one or more of the following: turning on power; turning off power; setting the power level to be applied through the resonant circuit; setting the duration of power-on.

[0050] Step a) may include: applying a pulse to the resonant circuit; and receiving feedback from the resonant circuit. In step c), feedback is sent to the central controller based on the feedback from the resonant circuit.

[0051] The feedback received by the local controller can be an estimate of the resonant frequency of the resonant circuit. The feedback received by the local controller can also be a measurement of the current flowing in the resonant circuit. The method may also include: estimating the resonant frequency of the resonant circuit; and providing feedback to a local controller. This estimation can be performed by a frequency estimation circuit located in the sensing unit.

[0052] The method may further include: comparing an estimated frequency with a target frequency; and controlling the triggering of a sampling operation mode based at least in part on the difference between the estimated frequency and the target frequency, wherein the determined resonant frequency is updated during the sampling operation mode.

[0053] The method may also include: measuring the current flowing through the resonant circuit; and providing feedback to the local controller. This measurement can be performed via a current feedback circuit located in the sensing unit.

[0054] The method may further include: comparing a measured current with a target current; and controlling the triggering of a sampling operation mode based at least in part on the difference between the measured current and the target current, wherein the determined resonant frequency is updated during the sampling operation mode.

[0055] Triggering the control sampling operation mode can include: triggering the sampling mode when the difference between the measured current and the target current is greater than a threshold.

[0056] Triggering the control sampling operation mode may include setting the sampling period based at least in part on the difference between the measured current and the target current, wherein the sampling period defines the interval between successive sampling operation modes of the inductor element.

[0057] The method may further include: decreasing the sampling mode period if the measured current flowing in the induction heater decreases; and increasing the sampling mode period if the measured current flowing in the induction heater increases.

[0058] According to another aspect, a computer program is provided that includes instructions for an apparatus for use with an aerosol supply device to perform at least the following operations: the apparatus includes a plurality of sensing units, each sensing unit including a resonant circuit and a local controller, the operations including: sending one or more commands from a central controller to at least one of the plurality of local controllers, wherein each local controller is associated with a corresponding resonant circuit; performing at least one action by the at least one of the plurality of local controllers based on the one or more commands received from the central controller; and sending feedback from the at least one of the plurality of local controllers to the central controller.

[0059] Actions performed by the local controller may include: applying pulses to the resonant circuit; receiving feedback from the resonant circuit; and sending feedback to the central controller based on the feedback from the resonant circuit. Attached Figure Description

[0060] Various implementation methods will now be described by way of example only, with reference to the accompanying drawings, in which: Figure 1 A schematic diagram of an apparatus for an aerosol supply device is shown; Figure 2 A flowchart is shown for a method of controlling a system comprising multiple sensing units for an aerosol supply device; Figure 3a and Figure 3b It is an overview Figure 1 A flowchart of the operation method of the device in the diagram; Figure 4a and Figure 4b It shows a graph of the pulse and the pulse response according to an exemplary embodiment; Figure 5a and Figure 5b This is a schematic diagram of a non-flammable aerosol supply system; Figure 5c yes Figure 5a A cross-sectional view of an article containing aerosol-generating materials from an aerosol supply system; Figure 6a A schematic diagram of another non-flammable aerosol supply system is shown; Figure 6b It shows Figure 6a A schematic diagram of an aerosol supply system containing aerosol-generating materials; Figure 7a An isometric exploded view of another aerosol supply device is shown; Figure 7b It shows the use of Figure 6a A schematic diagram of an aerosol supply system containing aerosol-generating materials; Figure 8a A schematic diagram of another non-flammable aerosol supply system is shown; and Figures 8b to 8e It shows the use of Figure 8a A cross-sectional view of an article containing aerosol-generating materials from an aerosol supply system. Detailed Implementation

[0061] As used herein, the term "delivery mechanism" is intended to cover systems that deliver substances to users and includes: non-flammable aerosol supply systems that release compounds from aerosolizable materials without burning the aerosolizable material, such as electronic cigarettes and heated tobacco products; mixing systems that use combinations of aerosolizable materials to generate aerosols; and articles containing aerosolizable materials and configured for use in one of these non-flammable aerosol supply systems.

[0062] According to this disclosure, a "non-flammable" aerosol supply system is a system in which the constituent aerosol generating materials of the aerosol supply system (or its components) are non-flammable or non-ignitable, in order to facilitate the delivery of at least one substance to a user.

[0063] In some implementations, the delivery system is a non-flammable aerosol supply system, such as a powered non-flammable aerosol supply system.

[0064] In some implementations, the non-flammable aerosol supply system is an electronic cigarette, also known as an electronic cigarette device or electronic nicotine delivery system (END), but it should be noted that the presence of nicotine in the aerosol generating material is not necessary.

[0065] In some implementations, the non-combustible aerosol supply system is an aerosol-generating material heating system, also known as a heated non-combustible system. An example of such a system is a tobacco heating system.

[0066] In some embodiments, the non-flammable aerosol supply system is a mixing system that uses a combination of aerosol-generating materials to generate aerosols, one or more of which can be heated. Each of these aerosol-generating materials can be in the form of, for example, solid, liquid, or gel, and may or may not contain nicotine. In some embodiments, the mixing system includes liquid or gel aerosol-generating materials and solid aerosol-generating materials. Solid aerosol-generating materials may include, for example, tobacco or non-tobacco products.

[0067] Typically, a non-flammable aerosol supply system may include non-flammable aerosol supply equipment and consumables for use with the non-flammable aerosol supply equipment.

[0068] In some embodiments, this disclosure relates to consumables comprising aerosol-generating materials and configured for use with non-flammable aerosol supply equipment. These consumables are sometimes referred to as articles in this disclosure.

[0069] In some implementations, a non-flammable aerosol supply system (such as its non-flammable aerosol supply equipment) may include a power source and a controller. For example, the power source may be an electrical power source.

[0070] In some embodiments, a non-flammable aerosol supply system may include an area for receiving consumables, an aerosol generator, an aerosol generation area, a housing, nozzles, filters, and / or aerosol modifiers.

[0071] In some embodiments, consumables for use with non-flammable aerosol supply equipment may include aerosol generating material, aerosol generating material storage area, aerosol generating material delivery component, aerosol generator, aerosol generating area, housing, packaging paper, filter, nozzle and / or aerosol modifier.

[0072] As used herein, the term "aerosol-generating material" (which is sometimes referred to herein as aerosolizable material) is a material that is capable of generating aerosols, for example, when heated, radiated, or otherwise energized. Aerosol-generating materials may be in the form of, for example, solid, liquid, or semi-solid (e.g., gel), and may or may not contain active substances and / or flavorings.

[0073] In some implementations, the substance to be delivered includes an active substance (sometimes referred to herein as an active compound).

[0074] Aerosol-generating materials may include one or more active substances and / or flavoring agents, one or more aerosol-forming agent materials, and optionally one or more other functional materials.

[0075] The aerosol-generating material may include a binder (e.g., a gelling agent) and an aerosol-forming agent. Optionally, a substance to be delivered and / or a filler may also be present. Optionally, a solvent, such as water, may also be present, and one or more other components of the aerosol-generating material may or may not be soluble in this solvent. In some embodiments, the aerosol-generating material is substantially free of plant material. Specifically, in some embodiments, the aerosol-generating material is substantially free of tobacco.

[0076] Aerosol-generating materials may include or may be in the form of aerosol-generating membranes. Aerosol-generating membranes may include binders (e.g., gelling agents) and aerosol-forming agents. Optionally, a substance to be delivered and / or a filler may also be present. Aerosol-generating membranes may be substantially free of plant material. Specifically, in some embodiments, the aerosol-generating material is substantially free of tobacco.

[0077] The aerosol-generating membrane can have a thickness of about 0.015 mm to about 1 mm. For example, the thickness can be in the range of about 0.05 mm, 0.1 mm or 0.15 mm to about 0.5 mm or 0.3 mm.

[0078] Aerosol-generating membranes can be continuous. For example, the membrane may comprise or be a continuous sheet of material. Aerosol-generating membranes can also be discontinuous. For example, an aerosol-generating membrane may comprise one or more discrete portions or regions of aerosol-generating material, such as dots, strips, or lines, that can be supported on a support. In such embodiments, the support may be planar or non-planar.

[0079] Aerosol-forming membranes can be formed by the following steps: combining a binder (e.g., a gelling agent) with a solvent (e.g., water), an aerosol forming agent, and one or more other components (e.g., one or more substances to be transported) to form a slurry, and then heating the slurry to evaporate at least some of the solvent to form an aerosol-forming membrane. The slurry can be heated to remove at least about 60 wt%, 70 wt%, 80 wt%, 85 wt%, or 90 wt% of the solvent.

[0080] The aerosol generating material can be an "amorphous solid." In some embodiments, the amorphous solid is a "monolithic solid." The aerosol generating material can be non-fibrous or fibrous. In some embodiments, the aerosol generating material can be a dried gel. The aerosol generating material can be a solid material in which some fluid (such as a liquid) can be retained. In some embodiments, the retained fluid can be water (such as water absorbed from the surroundings of the aerosol generating material) or the retained fluid can be a solvent (such as when the aerosol generating material is formed from a slurry). In some embodiments, the solvent can be water.

[0081] Aerosol forming agent materials may include one or more components capable of forming aerosols. In some embodiments, aerosol forming agent materials may include one or more of the following: glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butanediol, erythritol, meso-erythritol, ethyl vanillate, ethyl laurate, diethyl octanoate, triethyl citrate, triacetin, a mixture of glycerol diacetate, benzyl benzoate, benzyl phenyl acetate, glyceryl tribocate, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.

[0082] One or more other functional materials may include one or more of pH adjusters, colorants, preservatives, binders, fillers, stabilizers and / or antioxidants.

[0083] The material may be present on or within the support to form a matrix. The support may be, for example, paper, cardboard, cardboard, reconstituted material, plastic material, ceramic material, composite material, glass, metal, or metal alloy.

[0084] Aerosol supply devices can receive articles containing aerosol-generating materials for heating. As used herein, "articles" refers to components that include or contain aerosol-generating materials (which are heated to cause the aerosol-generating materials to volatilize), and optionally other components for use. Users can heat the articles to generate aerosols after inserting them into or onto the aerosol supply device, which the users then inhale.

[0085] An aerosol generator is an apparatus configured to generate aerosols from an aerosol-generating material. In some embodiments, an aerosol generator is a heater configured to subject the aerosol-generating material to thermal energy to release one or more volatiles from the aerosol-generating material to form an aerosol. In induction heating systems, the aerosol generator includes a magnetic field generator, such as an inductive element and a sensor.

[0086] A sensor is a material that can be heated by a changing magnetic field (such as an alternating magnetic field). The heating material can be conductive, allowing the changing magnetic field to penetrate and induce induction heating. Alternatively, it can be magnetic, causing hysteresis heating. Finally, it can be both conductive and magnetic, allowing it to be heated by both mechanisms.

[0087] Consumables are articles comprising or composed of aerosol-generating materials, some or all of which are intended to be consumed by a user during use. Consumables may include one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material delivery component, an aerosol-generating area, a housing, a package, a nozzle, a filter, and / or an aerosol modifier. Consumables may also include an aerosol generator, such as a heater, which releases heat during use to cause the aerosol-generating material to generate an aerosol. The heater may, for example, comprise a material that can be heated by electrical conduction.

[0088] A non-flammable aerosol supply system may include modular components comprising both a reusable aerosol supply device and a replaceable aerosol generating article. In some embodiments, the non-flammable aerosol supply device may include a power source and a controller (or control circuitry). The power source may, for example, include a power source such as a battery or a rechargeable battery. In some embodiments, the non-flammable aerosol supply device may also include an aerosol generating component. However, in other embodiments, the aerosol generating article may partially or completely comprise the aerosol generating component.

[0089] Figure 1 The device 2 of this disclosure is shown. In this example, the device includes a central controller 4 and a plurality of sensing units 7a-c. It should be understood that, although Figure 1 Three sensing units 7a-c are shown in the figure, but the device 2 of this disclosure may include any number of sensing units 7a-c.

[0090] exist Figure 1 In the example shown, each sensing unit 7a-c includes a resonant circuit 6a-c, which includes an inductor 8a-c and a capacitor 10a-c. Each sensing unit is equipped with a local controller 12a-c.

[0091] In each resonant circuit 6a-c, the inductor 8a-c is directly connected to the corresponding capacitor 10a-c. The inductor 8a-c and the corresponding capacitor 10a-c form a resonant circuit configured to inductively heat a sensor (not shown).

[0092] The inductor elements 8a-c and capacitor elements 10a-c of each resonant circuit 6a-c are connected to the corresponding local controllers 12a-c via a bridge circuit 14 (only one is shown for clarity). The bridge circuit 14 may include any bridge circuit known in the art. In some instances, the bridge circuit 14 includes a half-bridge circuit or a full-bridge circuit.

[0093] Each resonant circuit 6a-c, the corresponding local controller 12a-c, and the bridge circuit 14 can be considered to form sensing units 7a-7c. Each local controller 12a-c is configured to independently control the sensing unit 7a-c.

[0094] The central controller 4 and each local controller 12a-c are further connected to the power supply 16. Figure 1 In the example shown, local controllers 12a-c are connected to power supply 16 at the first output 18a. Central controller 4 is connected to power supply 16 at the second output 18a.

[0095] Each local controller 12a-c is further connected to the central controller 4. The local controllers 12a-c can be connected to the central controller 4 in any manner known in the art. For example, the connection can be wired or wireless.

[0096] The central controller 4 is configured to send commands to each local controller 12a-c. The commands can be of any type (e.g., containing any desired information).

[0097] Each local controller 6a-c is configured to receive the commands from the central controller 4. In other words, each local controller 12a-c receives data from the central controller 4 and sends data to the central controller. Data transmission is handled by... Figure 1 Line 24 in the diagram represents the line.

[0098] Local controllers 12a-c are configured to perform actions based on commands received from central controller 4.

[0099] It should be understood that commands can involve various operational parameters. For example, a command can include one or more of the following: power off, setting the power level to be applied through the resonant circuit, and setting the duration of power-on.

[0100] In some instances, the commands include instructions to turn the resonant circuits 6a-c on or off; in other words, to activate the resonant circuits in heating mode to induce heating of the sensor.

[0101] In some instances, the commands include instructions to apply pulses to the corresponding resonant circuits 6a-c.

[0102] In some instances, the commands include instructions for the local controllers 12a-c to provide feedback to the central controller 4 regarding the resonant circuits 6a-c.

[0103] For example, local controllers 6a-c are all configured to apply pulses to resonant circuits 6a-c (e.g., in response to a command from central controller 4).

[0104] In some instances, the edge of the applied pulse causes a pulse response between the capacitive elements 10a-c and the inductive elements 8a-c of the resonant circuit 6a-c, wherein the pulse response has a resonant frequency.

[0105] Each local controller 12a-c is further configured to receive feedback from the resonant circuit 6a-c. This feedback can be any desired information about the resonant circuit 6a-c. For example, the feedback may include measured and / or estimated values ​​of one or more of the following related to any element of the resonant circuit 6a-c: current, voltage, power, resistance, (resonant) frequency, temperature, and / or timing. In some instances, the feedback may indicate the response of the resonant circuit 6a-c to an applied pulse (e.g., a pulse that has been applied to the resonant circuit 6a-c by the local controller 12a-c in response to a command from the central controller 4). For example, feedback indicating the response of the resonant circuit 6a-c to an applied pulse may be the amplitude of the current and / or the estimated resonant frequency of the resonant circuit 6a-c.

[0106] Each local controller 12a-c is further configured to send the feedback to the central controller 4. In some instances, this feedback can help determine variables associated with subsequent pulses to be applied to the resonant circuits 6a-c. For example, the feedback can help determine one or more of the current, voltage, frequency, duration, and / or timing of any subsequent pulses to be applied to the resonant circuits 6a-c.

[0107] In some instances, local controllers 12a-c and / or central controller 4 may be configured to process feedback received from resonant circuits 6a-c. For example, local controllers 12a-c and / or central controller 4 may be configured to process measurements of one or more variables associated with resonant circuits 6a-c in order to determine one or more variables associated with any subsequent pulses to be applied to resonant circuits 6a-c.

[0108] In this example, each sensing unit 7a-7c further includes a frequency estimation circuit 20 (only one is shown for clarity) and a current feedback circuit 22 (only one is shown for clarity). The frequency estimation circuit 20 and current feedback circuit 22 of each sensing unit 7a-7c are each directly connected to the corresponding local controller 12a-c and connected to inductor elements 8a-c and / or capacitor elements 10a-c. The frequency estimation circuit 20 and current feedback circuit 22 can be any circuit known in the art.

[0109] Each frequency estimation circuit 20 can be configured to estimate the resonant frequency of the corresponding resonant circuits 6a-c. Specifically, each frequency estimation circuit 20 can be configured to estimate the resonant frequencies of inductor elements 8a-c and capacitor elements 10a-c. Therefore, the feedback received by the local controllers 12a-c can be an estimate of the resonant frequency of the resonant circuits 6a-c.

[0110] Each current feedback circuit 22 can be configured to measure the current flowing through the corresponding resonant circuits 6a-c. Specifically, each current feedback circuit 22 can be configured to measure the current flowing through inductor elements 8a-c and / or capacitor elements 10a-c. Therefore, the feedback received by the local controllers 12a-c can be one or more measured values ​​of the current flowing through the resonant circuits 6a-c.

[0111] It should be understood that the central controller 4 can interact independently with each local controller 12a-c, for example, in a specific order. The central controller 4 can interact with two or more local controllers simultaneously. The central controller can interact with all local controllers simultaneously.

[0112] This arrangement provides a networked controller for multiple sensing units.

[0113] With this arrangement, each local controller controls its corresponding sensing unit, and the main controller acts as a coordinating controller independent of these sensing units. Therefore, a smaller, lower-power main controller can be used, as it only handles data transmission—that is, sending commands and receiving feedback.

[0114] Furthermore, power is supplied directly to each sensing unit, meaning the high-frequency signal path is minimized and losses are reduced. Additionally, due to the shorter path and less noise, signal feedback is expected to be cleaner. This translates to simpler signal processing.

[0115] Figure 2 A method for controlling a system 2 comprising a plurality of sensing units 7a-c is illustrated. Step 101 includes sending a command from a central controller 4 to at least one of a plurality of local controllers 12a-c, wherein each of the plurality of sensing units 7a-c includes a local controller 12a-c and a resonant circuit 6a-c. Step 102 includes applying a pulse to the resonant circuit 6a-c of the sensing unit 7a-c by at least one of the plurality of local controllers 12a-c. Step 103 includes receiving feedback from the resonant circuit 6a-c by at least one of the plurality of local controllers 12a-c. Step 104 includes sending the feedback from at least one of the plurality of local controllers 12a-c to the central controller 4.

[0116] Figure 3a This is a flowchart illustrating the algorithm, generally indicated by reference numeral 26. Algorithm 26 can be implemented using the aforementioned apparatus 2.

[0117] Algorithm 26 begins in operation 27, in which the resonant circuits (e.g., resonant circuits 6a-c) are driven at their resonant frequencies in heating operation mode. For example, the switching device can (under the control of the control circuit) switch at a determined resonant frequency of the resonant circuits 6a-c. In this embodiment, the resonant circuits are driven at a predetermined initial resonant frequency.

[0118] In an alternative implementation, the algorithm can begin at operation 28, where a sampling mode is triggered prior to the initial heating; in other words, the sampling mode examines the receptors before heating. The sampling mode determines the frequency at which heating begins.

[0119] At operation 28, the sampling operation mode is entered. The sampling mode can attempt to determine the resonant frequency for the heating mode (e.g., during the next iteration of algorithm 26). The sampling mode may include applying pulses to the resonant circuit at specified time intervals and processing the resonant response to determine / estimate the resonant frequency.

[0120] exist Figure 1 In the device, the frequency can be determined by the frequency estimation circuit 20.

[0121] At operation 29, the driving frequency of the resonant circuit is set based on the determined resonant frequency.

[0122] Therefore, the parameters of the heating mode (including the driving frequency and sampling interval) are set in operation 29. Heating of the sensor occurs in the next iteration of heating mode 27 until the time interval specified by the sampling mode is reached. Then, algorithm 26 re-enters sampling mode 28, where the resonant frequency of the resonant circuit is determined again, and the parameters of the heating mode and sampling mode are updated (in operation 29).

[0123] exist Figure 1 In the device, the central controller can be used to determine the frequency at which sampling mode 28 is initiated. The central controller can attempt to strike a balance between two aspects: on the one hand, sampling frequently enough to ensure that the resonant circuit is driven at (or close to) its resonant frequency in heating mode 27 (which helps to improve heating efficiency); on the other hand, maintaining a lower sampling frequency (i.e., a longer sampling period) so that the sensor has a larger proportion of time to be heated (which also helps to improve heating efficiency).

[0124] The sampling period (i.e., the frequency of entering sampling mode 28) can be a controllable variable.

[0125] Figure 3b This is a flowchart illustrating an algorithm, generally indicated by reference numeral 30, according to an exemplary embodiment. Algorithm 30 begins at operation 32, in which the current flowing in the heater is determined. Figure 1 In the device, the frequency can be determined by the frequency estimation circuit 20. A higher heater current indicates that the resonant circuit is being driven at or near the resonant frequency. At operation 34, the sampling mode period is set at least in part based on the determined heater current. For example, the sampling mode period can be increased as the determined heater current increases, and vice versa (so that sampling is performed less frequently as the heater current increases).

[0126] Algorithm 140 can form part of operation 29 of Algorithm 26.

[0127] When the heater current is relatively low, reducing the sampling period can improve heater efficiency by resetting the drive frequency more frequently (in the case of operation 29). In other words, if a decrease in the current flowing in the induction heater is measured, the sampling period is reduced.

[0128] Conversely, if the heater current is high (e.g., at or near the target current), the sampling period can be increased, thereby reducing the update frequency of the drive frequency.

[0129] Figure 4a This is a graph illustrating pulse 140 according to an exemplary embodiment. Pulse 140 includes a rising pulse edge 142, which is an example of a pulse edge that can be applied in step 102. Pulse 140 can be generated by local controllers 12a-c sending commands to corresponding resonant circuits 6a-c via corresponding bridge circuits 14 in response to a command from central controller 4. Pulse 140 can be applied, for example, to generate a pulse response for estimating temperature and / or resonant frequency.

[0130] exist Figure 1 In the device, the central controller 4 sends a command to at least one of the local controllers 12a-c, and each of the local controllers 6a-c applies a pulse to its corresponding resonant circuit 6a-c. The applied pulse causes a pulse response between the capacitive elements 10a-c and the inductive elements 8a-c of the resonant circuit 6a-c.

[0131] A pulse response is generated by applying pulse edge 142 to the resonant circuit 6a-c.

[0132] Figure 4b The graph, generally indicated by reference numeral 150, illustrates an exemplary pulse response that can be generated at the connection point between the capacitive elements 10a-c and the inductor element 8a in the resonant circuit 6a-c described above, in response to pulse edge 92. In step 103, this response can be received by the local controller 12a-c.

[0133] like Figure 4bAs shown, the impulse response 150 can take the form of ringing resonance. The impulse response is the result of charge bouncing between the capacitive elements 10a-c and the inductive element 8a in the resonant circuit. Figure 4b As shown, the resonant frequency of the impulse response can be determined using the period 102 between zero crossings. Note that in some exemplary embodiments, other measurement methods, such as the period between consecutive peaks of the ringing response, may be used.

[0134] Figures 5a to 8e A non-flammable aerosol supply device and system that can be controlled according to the principles described herein are shown.

[0135] Figure 5a This is a perspective view of an aerosol supply system 200, which includes an aerosol supply device 210 with a housing 221 and replaceable articles 250 (also referred to as consumables) that can be inserted into the aerosol supply device 210. The aerosol supply device 210 may also include a start switch 212 for switching the aerosol supply device 220 on or off. In other embodiments, the device does not include a start switch 212 and may be equipped with a pressure trigger or some other on-demand start mechanism.

[0136] Figure 5b An aerosol supply system 200 is shown, with the front portion of the housing removed. An aerosol generating device 210 includes a plurality of inductive elements 8a, 8b, 8c surrounding a heating chamber 240, into which the distal end of an article 250 is inserted.

[0137] Multiple inductor elements 8a-c can each form part of a resonant circuit (e.g., resonant circuit 14). An inductor element, or each inductor element 8a-c, may include a helical inductor coil. In one example, the helical inductor coil is made by spirally winding Litz wire / cable to provide a helical inductor coil. In other embodiments, other types of inductor elements may be provided, such as inductors formed within a printed circuit board. These inductor elements may be identical or similar. Not all exemplary embodiments must use three inductor elements. Therefore, the aerosol generating apparatus 210 may include one or more inductor elements.

[0138] The aerosol supply system 200 includes a sensor 245 disposed within a heating chamber 240 such that when an article is inserted into the heating chamber 240, it is at least partially surrounded by the sensor.

[0139] In use, article 250 is received in article chamber 240. Inductive elements 8a-c surround sensor 245. Inductive elements 8a-c induce a changing magnetic field in sensor 245, which causes sensor 245 to heat up. Sensor 245 then heats the aerosol-generating material in article 250.

[0140] Figure 5c An embodiment of an article 250 for an aerosol supply device 210 as described above is shown, the device incorporating a sensor. Article 250 includes a nozzle 251 and a cylindrical rod 254 of aerosol-generating material connected to the nozzle 251. The aerosol-generating material 254 is enclosed in a package 252. The package 252 may be, for example, a paper or paper-backed foil package. The package 252 may be substantially airtight. In one embodiment, the package 252 comprises aluminum foil.

[0141] In this example, the nozzle 251 includes a material body 256 located upstream of a hollow tubular element 255, adjacent to and in contact with the hollow tubular element 255. The material body 256 and the hollow tubular element 255 each define a generally cylindrical overall external shape and share a common longitudinal axis. The material body 256 is enclosed in a first stuffing wrapper 257. The nozzle 251 also includes a second hollow tubular element 258, also referred to as a cooling element, located upstream of the first hollow tubular element 254. Both the material body 256 and the second hollow tubular element 258 define a generally cylindrical overall external shape and share a common longitudinal axis. The second hollow tubular element 258 is made of multiple layers of paper wound in parallel with butt joints to form the tubular element 258. A second stuffing wrapper 259 is also disposed around the nozzle 251.

[0142] Aerosol generating material 254 (also referred to herein as aerosol generating substrate 254) includes at least one aerosol forming material. In this example, the aerosol forming material is glycerol. In alternative embodiments, the aerosol forming material may be another material or a combination thereof as described herein. The aerosol generating substrate may include plant materials, such as tobacco.

[0143] In an alternative embodiment, the receptor 245 may be disposed in the article 250, for example, embedded in the aerosol generating material 254.

[0144] Figure 6a This is a schematic cross-sectional view through an aerosol supply system 200 according to another embodiment. The aerosol supply system 200 includes an aerosol supply device 210 and an aerosol generating article 250.

[0145] The aerosol supply device 210 includes a housing 221, a power supply 222, a control circuit 223, multiple inductive elements 8a-8c, a chamber 240, a mouthpiece end 226, an air inlet 227, an air outlet 228, a touch-sensitive panel 229, an inhalation sensor 230, and a usage indicator end 231.

[0146] The housing 221 can be made of any suitable material, such as plastic. The housing 221 is arranged such that the power supply 222, control circuitry 223, aerosol generating component 224, chamber 240, and inhalation sensor 230 are located within the housing 221. The housing 221 also defines an air inlet 227 and an air outlet 228, as described in more detail below. A touch-sensitive panel 229 and a usage indicator are located outside the housing 221. The housing 221 and the mouthpiece end 226 are formed as a single component (i.e., the mouthpiece end 226 forms part of the housing 221). In other embodiments, the mouthpiece end 226 may be a removable component separate from but capable of being attached to the housing 221, and may be removed for cleaning and / or replaced with another mouthpiece end 226.

[0147] The chamber 240 is sized to removably accommodate the aerosol generation article 250 therein. Although not shown, the aerosol supply device 210 may include a hinged door or removable portion of the housing 221 to allow access to the chamber 240, enabling a user to insert and / or remove the aerosol generation article 250 from the chamber 240. The hinged door or removable portion of the housing 210 may also be used to retain the aerosol generation article 250 within the chamber 240 when closed. Alternatively, the aerosol supply device 210 may include a permanent opening communicating with the chamber 240 through which the aerosol generation article 250 may be inserted into the chamber 240. In this implementation, a holding mechanism may be provided for retaining the aerosol generation article 250 within the chamber 240 of the aerosol supply device 210.

[0148] Power source 222 is configured to provide operating power to aerosol supply device 210. Power source 222 can be any suitable power source, such as a battery. For example, power source 222 may include a rechargeable battery, such as a lithium-ion battery. Power source 222 may be removable or integrated into aerosol supply device 210. In some implementations, power source 222 can be recharged by connection of aerosol supply device 210 to an external power source, such as AC power, via an associated connection port (such as a USB port (not shown)) or via a suitable wireless receiver (not shown).

[0149] Control circuit 223 is appropriately configured / programmed to control the operation of the aerosol supply device to provide certain operational functions of the aerosol supply device 210. Control circuit 223 is connected to and receives power from power source 222, and can be configured to distribute or control power supply to other components of the aerosol supply device 210.

[0150] The aerosol supply device 210 also includes a chamber 240 arranged to receive an aerosol-generating article 250. The aerosol-generating article includes a carrier component 262 and an aerosol-generating material 254 (e.g., an aerosol-generating membrane) disposed on or within the surface of the carrier 262. The article 250 also includes a sensor material (…). Figure 4a (Not shown in the image).

[0151] Inductor elements 8a-c can be referred to as heating elements. Inductor elements 8a-8c are aligned along an axis parallel to the longitudinal axis of device 210. Each inductor element is aligned with a corresponding discrete portion of aerosol generating material 254, thereby defining a corresponding aerosol generating region.

[0152] In some implementations, to improve heat transfer efficiency, the chamber may include a component that applies force to the surface of the carrier component 262 to press the carrier component 262 against the inductor elements 8a-c, thereby improving the heat transfer efficiency transferred to the aerosol generating material 254 by conduction.

[0153] In other embodiments, four or more inductive elements may be provided, which are arranged along an axis parallel to the longitudinal axis of the device 210.

[0154] Figure 6b It shows Figure 6a A schematic diagram of the product 250. The carrier component 262 is roughly rectangular in shape, with a length I, a width w, and a thickness tc.

[0155] The aerosol generating article 250 includes multiple discrete portions of aerosol generating material 254 disposed on the surface of a carrier member 262. The discrete portions of the aerosol generating material 254 are separated from each other, such that each of the multiple discrete portions can be individually or selectively energized (e.g., heated) to generate an aerosol. The aerosol generating article 250 may include multiple portions of aerosol generating material all formed of the same aerosol generating material. Alternatively, the aerosol generating article 250 may include multiple portions of aerosol generating material 254, wherein at least two portions are formed of different aerosol generating materials.

[0156] In this embodiment, the aerosol generating article 250 includes three discrete portions of aerosol generating material 254 arranged along the central axis of the article to align with the inductive element in the device 210. In other embodiments, more or fewer discrete portions may be provided, and / or these portions may be arranged in different patterns to align with any arrangement of the inductive element in the aerosol supply device.

[0157] The carrier layer 262 includes a heating layer 264 serving as a sensor 245 and a support layer 266. Aerosol generating material 254 is disposed on a first side 264a of the heating layer 264. The aerosol generating material 254 is divided into discrete portions that can be readily heated sequentially (e.g., one after another) during an aerosol generating session.

[0158] In this example, the heating layer 264 is formed of aluminum foil. In other examples, the heating layer 264 may be formed of different materials, such as another metal or metal alloy.

[0159] A support layer 266 is disposed on the second side 264b of the heating layer 264. The support layer 266 comprises a single layer of material. The support layer 266 is formed entirely of the same material. In this example, the support layer 266 is formed of paper or cardboard. The support layer 266 provides structural support for the heating layer 264. The support layer 266 provides structural support for the article 250.

[0160] In other embodiments, the article comprises a continuous layer of aerosol-generating material disposed on the carrier component 262.

[0161] In other embodiments, the carrier component 262 may include a single layer, which is a heating layer 264 serving as the sensor 245.

[0162] In use, article 250 is received in article chamber 240. Inductive elements 8a-c surround sensor 245. Inductive elements 8a-c induce a changing magnetic field in sensor 245, which causes sensor 245 to heat up. Sensor 245 then heats the aerosol-generating material in article 250.

[0163] Figure 7a An isometric exploded view of an aerosol supply device 210 according to another embodiment is shown. The aerosol supply device 210 includes components related to... Figure 5a Components that are substantially similar to those described are referred to by the same reference numerals, and unless otherwise specified, these components shall be understood to be substantially the same as their corresponding components.

[0164] Device 210 includes a plurality of inductor elements 8, which in this example are arranged in a 2x5 configuration. In this embodiment, device 210 includes a plurality of air inlets 227 and air delivery channels 237 to guide air to the inductor elements 8.

[0165] In another embodiment (not shown), each of the plurality of inductive elements 8, which are enclosed by a corresponding aerosol transport channel, has an independent air supply port. It should be understood that in other embodiments, the device may have a single air inlet (as described above).

[0166] Figure 7b An illustration of a different embodiment is shown. Figure 7a Article 250 is used in conjunction with the device in the middle. Article 250 includes items related to... Figure 6b Components that are substantially similar in appearance are referred to by the same reference numerals, and unless otherwise specified, these components should be understood to be substantially identical to their corresponding components. Figure 7b In this embodiment, the article 250 includes ten discrete portions of aerosol-generating material 254 disposed on a first side of the carrier component 262. These discrete portions are arranged in a 2x5 grid pattern. In this embodiment, the carrier component 262 includes a heating layer 264.

[0167] It should be understood that in other embodiments, the carrier component 262 also includes a support layer.

[0168] In other embodiments, the aerosol supply device may be provided with any number of inductive elements, which may be arranged in different grid configurations, such as 2x3 grid, 2x4 grid or 3x3 grid.

[0169] In an alternative embodiment, the aerosol generating article may be provided with an aerosol generating material 254, which is distributed as needed in different numbers of discrete portions and at different positions on the first side of the heating layer 264.

[0170] Figure 8a An aerosol supply system 200 according to another embodiment is shown. The aerosol supply device 210 includes components related to... Figure 5a Components that are substantially similar to those described are referred to by the same reference numerals, and unless otherwise specified, these components shall be understood to be substantially the same as their corresponding components.

[0171] Device 210 includes a plurality of inductor elements 8a-j, which in this embodiment are disposed in a first array 8a to e and a second array 8f to 8j. The inductor elements 8a to 8e of the first array are disposed on a first side of the chamber 240, and the second array 8f to 8j are disposed on the opposite second side of the chamber 240.

[0172] In other embodiments, the aerosol supply device 210 may include a hinged door or removable portion of the housing 221 to allow access to the chamber 240 so that a user can insert the aerosol-generated article 250 into the chamber 240 and / or remove the aerosol-generated article from the chamber 240.

[0173] Figures 8b to 8e It shows that it can be used with Figure 8aVarious articles used in the device. These articles are generally cubic in shape so as to be received in the chamber 240 of the device 210.

[0174] Figure 8b A cross-sectional view is shown through an article 250 including a carrier component 262, which includes a heating layer 264. Discrete portions of the aerosol generating material 254 are disposed on a first side 264a and a second side 264b of the heating layer 264.

[0175] Figure 8c A cross-sectional view is shown through an article 250 including a carrier component 262, which includes a support layer 266 and two heating layers 264, wherein the support layer is disposed between the two heating layers 264. Discrete portions of the aerosol generating material 254 are disposed on the outer surface of the heating layers 264.

[0176] Figure 8d A cross-sectional view is shown through an article 250 comprising a generally cubic carrier component 262. The article defines an internal cavity 263 having an open first end 262a and a second end 262b. The carrier component 262 includes heating layers 264 disposed on opposite sides of the internal cavity. Discrete portions of aerosol-generating material 254 are disposed on the inner surface of the heating layers 264.

[0177] Figure 8e A cross-sectional view is shown through an article 250 comprising a generally cubic carrier component 262. The article defines an internal cavity 263 having an open first end 262a and a second end 262b. The carrier component 262 includes a heating layer 264 and a support layer 266. Discrete portions of aerosol-generating material 254 are disposed on the inner surface of the heating layer 264.

[0178] The various embodiments described herein are provided only to aid in understanding and teaching the claimed features. These embodiments are provided merely as representative examples of implementations and are not exhaustive and / or exclusive. It should be understood that the advantages, implementations, examples, functions, features, structures, and / or other aspects described herein should not be considered as limitations on the scope of the invention as defined by the claims or on the equivalents of the claims, and other embodiments may be utilized. Modifications may be made without departing from the scope of the claimed invention. In addition to those specifically described herein, various embodiments of the invention may suitably include suitable combinations of the disclosed elements, components, features, portions, steps, devices, etc.; consist of suitable combinations of the disclosed elements, components, features, portions, steps, devices, etc.; or consist substantially of suitable combinations of the disclosed elements, components, features, portions, steps, devices, etc. Furthermore, this disclosure may include other inventions not currently claimed but which may be claimed in the future.

Claims

1. An apparatus for an aerosol supply device, comprising: Central controller; as well as Multiple sensing units; Each of the plurality of sensing units includes: - A resonant circuit, comprising: an inductive element configured as a heating sensor; and a capacitive element; and -Local controller; The local controller is configured as follows: Receive one or more commands from the central controller; To perform at least one action based on the one or more commands received from the central controller; and Send feedback to the central controller.

2. The apparatus according to claim 1, wherein, The central controller is configured to send one or more commands related to the operation of the device to the local controller.

3. The apparatus according to claim 1, wherein, The central controller is configured to send one or more commands to the local controller associated with one or more of the following: turning on the power; turning off the power; setting the power level to be applied through the resonant circuit; setting the duration of power-on.

4. The apparatus according to any one of claims 1 to 3, wherein, The central controller is configured to send commands including instructions to apply pulses to the corresponding resonant circuits; and The local controller is configured as follows: Receive the command from the central controller; Apply a pulse to the resonant circuit; Receive feedback from the resonant circuit; and The feedback is sent to the central controller based on the feedback from the resonant circuit.

5. The apparatus according to claim 4, wherein, The edge of the applied pulse causes a pulse response between the capacitive and inductive elements of the resonant circuit, wherein the pulse response has a resonant frequency.

6. The apparatus according to any one of claims 4 or 5, wherein, The feedback received by the local controller is an estimate of the resonant frequency of the resonant circuit.

7. The apparatus according to any one of claims 4 to 6, wherein, The feedback received by the local controller is a measurement of the current flowing in the resonant circuit.

8. The apparatus according to any one of the preceding claims, wherein, Each of the plurality of sensing units further includes a bridge circuit configured to connect the inductor and the capacitor to the local controller.

9. The apparatus according to any one of the preceding claims, wherein, The device also includes a power source configured to provide power to the central controller and each of the plurality of local controllers.

10. The apparatus according to any one of the preceding claims, wherein, Each of the plurality of local controllers and / or the central controller is configured to process the feedback received from the resonant circuit.

11. The apparatus according to any one of the preceding claims, wherein, Each of the plurality of sensing units further includes a frequency estimation circuit; The frequency estimation circuit is configured as follows: Estimate the resonant frequency of the resonant circuit; and Provide feedback to the local controller.

12. The apparatus according to any one of the preceding claims, wherein, Each of the plurality of sensing units further includes a current feedback circuit. The frequency estimation circuit is configured as follows: Measure the current flowing through the resonant circuit; and Provide feedback to the local controller.

13. The apparatus according to any one of the preceding claims, comprising at least five sensing units.

14. The device according to claim 13, comprising ten sensing units.

15. An aerosol supply device, comprising the apparatus according to any one of claims 1 to 14.

16. The aerosol supply apparatus of claim 15, comprising: a chamber for removably receiving an article, the article comprising an aerosol-generating material. in, The inductive elements of the plurality of resonant circuits are arranged along the sidewall of the cavity.

17. The aerosol supply apparatus of claim 15, further comprising: a chamber for removably receiving an article, the article comprising an aerosol-generating material. in, The inductive elements of the plurality of resonant circuits are arranged along the two side walls of the cavity.

18. An aerosol supply system comprising an aerosol supply device according to any one of claims 15 to 17 and an article comprising an aerosol generating material.

19. The aerosol supply system according to claim 18, wherein, The article includes a receptor.

20. A method for generating an aerosol, comprising: Provide an aerosol supply system according to claim 18 or 19; And inserting at least partially the aerosol-generated article into the chamber.

21. A method for controlling an apparatus for an aerosol supply device, the apparatus comprising a central controller and a plurality of sensing units, each of the sensing units comprising a local controller and a resonant circuit. The method includes: Step a): Send one or more commands from the central controller to at least one of the local controllers; Step b): At least one of the local controllers performs at least one action based on the one or more commands received from the central controller; as well as Step c): Send feedback from at least one of the local controllers to the central controller.

22. The method according to claim 21, wherein, Step a) includes sending one or more commands related to the operation of the device to a plurality of the local controllers.

23. The method according to claim 21 or 22, wherein, Step a) includes sending one or more commands to a plurality of the local controllers related to one or more of the following: turning on power; turning off power; setting the power level to be applied through the resonant circuit; setting the duration of power-on.

24. The method according to any one of claims 21 to 23, wherein, Step b) includes: Apply a pulse to the resonant circuit; Receive feedback from the resonant circuit; and In step c), the feedback is sent to the central controller based on the feedback from the resonant circuit.

25. A computer program comprising instructions for use with an aerosol supply device to perform at least the following operations, the device including a central controller and a plurality of sensing units, each of the sensing units including a resonant circuit and a local controller, the operations including: The central controller sends one or more commands to at least one of a plurality of local controllers, wherein each local controller is associated with a corresponding resonant circuit; At least one of the local controllers performs at least one action based on one or more commands received from the central controller; as well as Feedback is sent from at least one of the multiple local controllers to the central controller.

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