Capacitance sensing method and aerosol-generating device for performing same

Abstract

A method performed by an aerosol-generating device comprises the steps of: controlling a signal generating circuit to generate a first signal and a second signal according to a predetermined period; acquiring a reflection signal corresponding to the second signal; and determining capacitance information corresponding to at least a portion of an insertion space of an aerosol-generating article of the aerosol-generating device based on the reflected signal.

Description

Technical Field

[0001] The following embodiments relate to a technique for controlling an aerosol generating device, and in particular, to a capacitive sensing technique in a dielectric heating aerosol generating device. Background Technology

[0002] In recent years, the demand for e-cigarette devices has been gradually increasing. Along with this increasing demand, the related functions of e-cigarette devices have also been continuously developed. In particular, functions based on the types and characteristics of e-cigarette devices are constantly evolving.

[0003] There is a growing need for a system that uses an aerosol-generating device to heat cigarettes (or aerosol-generating items) to produce aerosols, rather than generating aerosols by burning cigarettes. Electromagnetic wave heating technology is a technique that uses the principle of dielectric heating to heat objects. Electromagnetic wave heating technology can be used to rapidly heat aerosol-generating items. Summary of the Invention

[0004] The problem the invention aims to solve One embodiment provides an aerosol generating apparatus capable of using a single antenna to heat an aerosol-generating article and sense capacitance.

[0005] One embodiment provides an aerosol generating apparatus capable of determining whether to insert an aerosol generating article based on capacitance sensed using a single antenna.

[0006] One embodiment provides an aerosol generating apparatus capable of determining the type of aerosol-generating article based on capacitance sensed using a single antenna.

[0007] However, the problem to be solved by this invention is not limited to the problems mentioned above, and other technical problems may also exist.

[0008] Technical means to solve the problem According to one embodiment, a method performed by an aerosol generating apparatus is disclosed, the aerosol generating apparatus comprising: a signal generating circuit that generates a first signal in a first frequency band and a second signal in a second frequency band; a resonant section that causes the first signal to resonate to generate an electric field; a coupler that transmits the first signal to the resonant section; and a processor, the method comprising the steps of: controlling the signal generating circuit to generate the first signal and the second signal according to a predetermined period; acquiring a reflected signal corresponding to the second signal; and determining, based on the reflected signal, capacitance information corresponding to at least a portion of an insertion space of an aerosol-generating article of the aerosol generating apparatus.

[0009] According to one embodiment, an aerosol generating apparatus is disclosed, comprising: a signal generating circuit that generates a first signal in a first frequency band and a second signal in a second frequency band; a resonant section that causes the first signal to resonate to generate an electric field; a coupler that transmits the first signal to the resonant section; and a processor configured to: control the signal generating circuit to generate the first signal and the second signal according to a predetermined period; acquire a reflected signal corresponding to the second signal; and determine, based on the reflected signal, capacitance information corresponding to at least a portion of an insertion space of an aerosol generating article of the aerosol generating apparatus.

[0010] Invention Effects According to at least one embodiment of the present disclosure, an aerosol generating apparatus is provided that can use a single antenna to heat an aerosol generating article in a dielectric heating manner and determine capacitance information in parallel with the operation of heating the aerosol generating article.

[0011] According to at least one embodiment of the present disclosure, an aerosol generating apparatus capable of heating an aerosol generating article using a heating signal in a heating frequency band corresponding to the type of aerosol generating article can be provided. Attached Figure Description

[0012] Figure 1 This is a block diagram of an aerosol generating apparatus according to one embodiment.

[0013] Figure 2 This is a structural diagram of a resonator based on a waveguide, as shown in the example.

[0014] Figure 3 This is a flowchart of a capacitance sensing method according to one embodiment.

[0015] Figure 4 This is a flowchart of a method for performing a capacitance-based information according to an embodiment.

[0016] Figure 5 This is a flowchart of a method for performing a capacitance-based information according to an embodiment.

[0017] Figure 6a This is a block diagram of an aerosol generating apparatus including multiple antennas according to one embodiment.

[0018] Figure 6b This is a flowchart of a control method for an aerosol generating apparatus including multiple antennas according to an embodiment. Detailed Implementation

[0019] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. Regardless of the reference numerals, the same or similar components will be assigned the same reference numerals, and repeated descriptions will be omitted. Similar reference numerals may be used for similar or related components in the description of the drawings.

[0020] The suffixes “module” and “unit” used in the following description for the purpose of drafting the specification are used interchangeably or for convenience only, and do not inherently have different meanings or functions. Furthermore, the suffixes “module” or “unit” can include units implemented in hardware, software, or firmware, and can be used interchangeably with terms such as logic, logic block, component, or circuit. A “module” or “unit” can be a component that is integrally formed or the smallest unit or part of said component that performs one or more functions. For example, a “module” or “unit” can be implemented as an application-specific integrated circuit (ASIC).

[0021] Furthermore, when describing the embodiments disclosed in this specification, detailed descriptions of relevant well-known technologies will be omitted if it is determined that such detailed descriptions may obscure the spirit of the embodiments disclosed in this specification. Additionally, the accompanying drawings are only for easy understanding of the embodiments disclosed in this specification; the technical concepts disclosed in this specification are not limited by the drawings and should be understood to include all modifications, equivalents, and even substitutions included within the scope of the concepts and techniques of this disclosure.

[0022] Terms including ordinal numbers such as "first" and "second" can be used to describe multiple constituent elements, but the constituent elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one constituent element from other constituent elements.

[0023] When it is mentioned that a component is "connected" or "coupled" to another component, it should be understood that it can be directly connected or directly coupled to the other component, but there may also be other components in between. Conversely, when it is mentioned that a component is "directly connected" or "directly coupled" to another component, it should be understood that there are no other components in between.

[0024] Unless the context clearly indicates that they have different meanings, the singular form of a statement covers the plural form of a statement.

[0025] Embodiments of this disclosure can be implemented in software that includes one or more instructions stored in a storage medium (e.g., a memory) readable by a machine (e.g., aerosol generating apparatus 1). For example, a processor (e.g., processor 170) of the machine (e.g., aerosol generating apparatus 1) can invoke at least one of the more than one instructions stored in the storage medium and execute that instruction. This enables the machine to operate in a manner that performs at least one function according to the invoked at least one instruction. The more than one instruction may include code generated by a compiler or code executable by an interpreter. The storage medium readable by the machine can be provided in the form of a non-transitory storage medium. The term "non-transitory" simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and this term does not distinguish between semi-permanent and temporary storage of data in the storage medium.

[0026] In this disclosure, the orientation of the aerosol generating device 1 can be defined using a Cartesian coordinate system as a reference. The x-axis direction in the Cartesian coordinate system can be defined as the left-right direction of the aerosol generating device 1. The y-axis direction can be defined as the front-back direction of the aerosol generating device 1. The z-axis direction can be defined as the up-down direction of the aerosol generating device 1.

[0027] Figure 1 This is a block diagram of an aerosol generating apparatus 1 according to one embodiment.

[0028] According to one embodiment, the aerosol generating apparatus 1 may include a control unit 10, a source unit 20, and a radiating unit 30. The control unit 10 may refer to a circuit used to control the basic operation of the aerosol generating apparatus 1. The source unit 20 may refer to a circuit that generates a radio frequency (RF) signal under the control of the control unit 10. The radiating unit 30 may refer to a device that radiates the RF signal generated by the source unit 20 in the form of electromagnetic waves into the space where the aerosol generating article is inserted (hereinafter referred to as the insertion space). Through the radiated electromagnetic waves (e.g., RF signals), the charges or ions of the dielectric (e.g., glycerol) contained in the aerosol generating article can be caused to vibrate or rotate, and the frictional heat generated during the vibration or rotation of the charges or ions can heat the dielectric, thereby heating the aerosol generating article. In other words, the aerosol generating apparatus 1 may be a device that generates aerosols by heating the aerosol generating article in a dielectric heating manner.

[0029] In one example, the control unit 10 may include a power connector 110, a charging circuit 120, a power supply 130, a first power converter 140, a second power converter 150, a third power converter 160, and / or a processor 170. Furthermore, the source unit 20 may include an RF signal generation circuit 210, a drive amplifier 220, a power amplifier 230, a directional coupler 240, and / or a temperature sensing circuit 250. However, those skilled in the art will understand that, according to the design of the aerosol generating device 1, this can be omitted. Figure 1 The shown components may include some of the constituent elements, or new constituent elements may be added.

[0030] Power connector 110 can refer to a physical connection device that electrically connects to an external electronic device or system (e.g., an external power source) for receiving and transmitting power. For example, power connector 110 can receive power from an external power source and deliver the received power to a component that needs charging (e.g., power supply 130). Power connector 110 can also provide a data transmission path. Aerosol generating device 1 can send and receive data with external electronic devices or systems (e.g., smartphones, computers, etc.) through power connector 110. Power connector 110 can include a Universal Serial Bus (USB) power connector, a Direct Current (DC) power connector, etc. In one example, power connector 110 can be a USB-C connector that provides 9V DC voltage at a current of 1A, but is not limited to this. Power connector 110 can also include an interface for wirelessly sending and receiving power.

[0031] Charging circuit 120 can refer to a circuit that charges power supply 130. Charging circuit 120 can charge power supply 130 using power supplied from power connector 110. In one example, charging circuit 120 can be a charging IC (Charger IC), which is an integrated circuit (IC) capable of enabling efficient and safe charging of power supply 130. Charging circuit 120 can monitor the charging status of power supply 130 or optimize the charging process by monitoring the voltage, current, and / or temperature of power supply 130. For example, charging circuit 120 can prevent overcharging or over-discharging by monitoring the status of power supply 130 and providing appropriate charging voltage and current.

[0032] Power supply 130 can supply power for the operation of aerosol generating device 1. Power supply 130 may include one or more rechargeable batteries. Power supply 130 can supply power to radiating unit 30, causing radiating unit 30 to radiate electromagnetic waves (e.g., RF signals) into the insertion space to heat the aerosol generating article. Here, supplying power to radiating unit 30 and supplying power to source unit 20 have the same meaning. In addition, power supply 130 can supply the power required for the operation of processor 170, RF signal generation circuit 210, drive amplifier 220, power amplifier 230, temperature sensing circuit 250, etc. In one example, power supply 130 may be a lithium polymer (LiPoly) battery, but is not limited thereto. Power supply 130 may be a replaceable (detachable) battery (hereinafter, removable battery). Removable battery may be installed in a battery housing provided in aerosol generating device 1, or may be removed from the battery housing. Removable battery may be charged by wired and / or wireless means.

[0033] The aerosol generating device 1 may include a power conversion circuit for converting the power supplied by the power source 130 into power (e.g., voltage and / or current) suitable for other components. The power conversion circuit may include at least one of a buck converter, a buck-boost converter, a boost converter, a Zener diode, and a low-dropout regulator (LDO). Furthermore, the power conversion circuit may, as needed, include a DC / AC converter (e.g., an inverter).

[0034] In one example, the aerosol generating device 1 may include a first power converter 140, a second power converter 150, and a third power converter 160. The first power converter 140 may be a low-dropout regulator (LDO) for providing suitable power (e.g., DC 3.3V) to the processor 170. The second power converter 150 may be a buck-boost converter for providing suitable power (e.g., DC 5V) to the temperature sensing circuit 250, the RF signal generation circuit 210, and the drive amplifier 220. The third power converter 160 may be a boost converter for providing suitable power (e.g., DC 12V / 25W) to the power amplifier 230.

[0035] However, the first power converter 140, the second power converter 150, and the third power converter 160 are not limited to the examples described above and may include different types of power conversion circuits. Furthermore, although in Figure 1The illustration shows an aerosol generating device 1 comprising three power converters, but the aerosol generating device 1 may include three or more power converters, or may include fewer power converters. In one example, at least a portion of the first power converter 140, the second power converter 150, and the third power converter 160 may be integrated into a single power converter.

[0036] The processor 170 can control the entire operation of the aerosol generating device 1. For example, the processor 170 can directly or indirectly control the charging and discharging of the power supply 130 using the charging circuit 120. Furthermore, the processor 170 can regulate the voltage and / or current output by the power conversion circuit by adjusting the frequency and / or duty cycle of the current pulses input to at least one switching element of the power conversion circuit. In addition to the components described above, the processor 170 can also control the operation of other components described later.

[0037] The processor 170 can be implemented by an array of multiple logic gates, or by a combination of a general-purpose microcontroller (MCU) (or microprocessor) and a memory storing a program that can be executed in the MCU. Furthermore, it will be understood by those skilled in the art to which this embodiment pertains that the processor 170 can also be implemented by other forms of hardware.

[0038] The RF signal generation circuit 210 can generate an RF signal based on power supplied from the power source 130 or the second power converter 150. An RF signal is a signal with a frequency in the range of 300 MHz to 300 GHz. In one example, the frequency of the RF signal can be from 1 GHz to 100 GHz. Furthermore, the frequency of the RF signal can be in the Industrial, Scientific and Medical equipment (ISM) band, for example, 915 MHz, 2.45 GHz, and / or 5.8 GHz.

[0039] The RF signal generation circuit 210 may include a voltage-controlled oscillator (VCO) that generates RF signals with different frequencies based on the input voltage. The RF signal generation circuit 210 may receive control signals (e.g., DC signals) from the processor 170 and generate RF signals with frequencies corresponding to the received control signals. The processor 170 may store the control signals corresponding to the desired frequencies in the form of a lookup table, or calculate the control signals corresponding to the desired frequencies in real time through at least one operation.

[0040] In one example, the aerosol generating apparatus 1 may further include a digital-to-analog (D / A) converter for converting digital control signals output from the processor 170 into analog control signals. The RF signal generating circuit 210 may receive the analog control signals and generate an RF signal having a frequency corresponding to the received analog control signals.

[0041] The driver amplifier 220 can amplify the RF signal generated by the RF signal generation circuit 210. For example, the driver amplifier 220 can provide an input signal suitable for the next stage component (e.g., power amplifier 230) by amplifying the signal level (e.g., amplitude) of the RF signal. The driver amplifier 220 can minimize signal distortion by maintaining high linearity. However, the driver amplifier 220 is an amplifier focused on increasing the signal level and can provide relatively low output power.

[0042] Power amplifier 230 can amplify the power of the RF signal received from drive amplifier 220. Power amplifier 230 can be an amplifier focused on providing sufficient power to the final output device (e.g., radiator 30). For example, power amplifier 230 can provide a high-power RF signal to radiator 30 to cause radiator 30 to radiate electromagnetic waves into the insertion space to heat the aerosol generating article. Power amplifier 230 can perform amplification operation using power received from third power converter 160, which can provide power and / or voltage higher than that of second power converter 150.

[0043] The driver amplifier 220 and power amplifier 230 may include transistors such as bipolar junction transistors (BJTs), field-effect transistors (FETs), or vacuum tubes. In one example, the driver amplifier 220 and power amplifier 230 may be gallium nitride (GaN) transistors capable of handling high efficiency, high speed, and high voltage, but are not limited thereto. The driver amplifier 220 and power amplifier 230 may include operational amplifiers.

[0044] In addition, although Figure 1 The drive amplifier 220 and power amplifier 230 shown are separate amplifiers, but they can be integrated into a single amplifier. Furthermore, the drive amplifier 220 and / or power amplifier 230 can be composed of multiple amplifiers connected in series, in parallel, and / or in combinations thereof.

[0045] The radiating section 30 may include one or more antennas for radiating electromagnetic waves into space. The size and shape of the one or more antennas may be adapted to the size and shape of the aerosol-generating article. For example, if the aerosol-generating article is cylindrical, the one or more antennas may be tubular structures surrounding the cylindrical aerosol-generating article. The term "tubular shape" can refer to the overall shape of the antenna being tubular. In other words, when the antenna is formed as a metal (such as SUS) track, it can refer to the overall shape of the entire track being tubular. The shape of the one or more antennas is not limited to the above examples and may include various shapes such as flat plates and curved plates.

[0046] The radiating section 30 can radiate electromagnetic waves (e.g., amplified or reflected RF signals) into the insertion space to heat the aerosol-generating article. To maximize the heating efficiency of the aerosol-generating article, electromagnetic wave resonance needs to be generated within the insertion space. The resonance conditions of the insertion space (e.g., resonant frequency) may vary due to factors such as the dielectric content in the inserted aerosol-generating article. The processor 170 can adjust the control signal input to the RF signal generation circuit 210 to control the frequency of the RF signal generated by the RF signal generation circuit 210 to correspond to or approach the resonance conditions of the insertion space. The processor 170 can obtain information about the resonance conditions in the insertion space using the directional coupler 240.

[0047] The directional coupler 240 can refer to a passive device having a waveguide structure capable of separating incident and reflected waves. The directional coupler 240 can receive RF signals transmitted from the power amplifier 230 to the radiating section 30 and electromagnetic waves reflected from the insertion space after radiation by the radiating section 30. The directional coupler 240 can separate the reflected RF signals and reflected electromagnetic waves and transmit them to the processor 170.

[0048] In one example, the aerosol generating apparatus 1 may further include an analog-to-digital (A / D) converter for converting the analog output of the directional coupler 240 into a digital output. The A / D converter may be integrated into the processor 170 or exist externally to the processor 170. The processor 170 can analyze the characteristics of the reflected RF signal (e.g., current, voltage, power, phase, and / or frequency) and the characteristics of the reflected electromagnetic wave (e.g., current, voltage, power, phase, and / or frequency) by monitoring the output of the directional coupler 240.

[0049] The processor 170 can confirm whether the source unit 20 is operating as expected based on the characteristics of the reflected RF signal. Furthermore, the characteristics of the reflected RF signal, together with the characteristics of the reflected electromagnetic wave, can be used to determine the heating efficiency of the source unit 20 or the radiating unit 30. The processor 170 controls the source unit 20 to maximize the heating efficiency of the source unit 20 or the radiating unit 30. For example, the processor 170 can adjust the frequency of the RF signal generated by the RF signal generation circuit 210 to minimize the power of the reflected electromagnetic wave. Minimizing the power of the reflected electromagnetic wave can mean that the frequency of the RF signal is close to the resonance condition of the insertion space. The characteristics of the reflected RF signal can provide a reference for whether the power of the reflected electromagnetic wave has been minimized.

[0050] Depending on the frequency of the RF signal, electromagnetic wave resonance may occur in the insertion space; therefore, the insertion space can be referred to as a resonant section. At least a portion of the insertion space is surrounded by at least one shielding component to prevent electromagnetic waves from leaking to the outside of the aerosol generating apparatus 1. According to one embodiment, the insertion space may further include a physical structure that keeps the resonance conditions within the controllable range of the processor 170. The physical structure may include at least one conductor, and the resonance conditions of the insertion space may vary depending on the arrangement, thickness, and length of the conductor. Furthermore, the physical structure, distinct from the dielectric contained in the aerosol generating article, may include a space for accommodating a dielectric with low electromagnetic wave absorption. A dielectric with low electromagnetic wave absorption can change the resonant frequency of the entire resonant section without absorbing the energy to be transferred to the heated object. Therefore, even with miniaturization of the resonant section, the resonance conditions can be determined within the controllable range of the processor 170.

[0051] The temperature sensing circuit 250 can be arranged in contact with or adjacent to the components included in the source section 20 to measure the temperature of the source section 20. For example, the temperature sensing circuit 250 can be arranged in contact with or adjacent to at least one of the RF signal generation circuit 210, the drive amplifier 220, and the power amplifier 230. During the generation and / or amplification of the RF signal, heat is generated due to limited efficiency. If excessive heat is generated, it may negatively affect the components included in the source section 20 or other components included in the aerosol generation apparatus 1. The temperature measured by the temperature sensing circuit 250 can be used to prevent the source section 20 from overheating.

[0052] The processor 170 receives a measured temperature (or a value corresponding to the temperature) from the temperature sensing circuit 250. When it determines that the source unit 20 is overheating, it can stop the operation of the source unit 20. For example, the processor 170 can stop the operation of the source unit 20 by stopping the power supply to the source unit 20 or by sending a control signal. In the following text, supplying power to the source unit 20 refers to controlling whether the source unit 20 is running.

[0053] The temperature sensing circuit 250 may include at least one of the following sensors: a thermocouple, a resistance temperature detector (RTD), a thermistor, a semiconductor temperature sensor, and an optical temperature sensor. In one example, the temperature sensing circuit 250 may be a chip-type sensor (e.g., a negative temperature coefficient (NTC)) to minimize its footprint, but is not limited thereto.

[0054] In addition to the components shown in the accompanying drawings, the aerosol generating apparatus 1 may also include other components. For example, the aerosol generating apparatus 1 may also include a sensor unit, an output unit, an input unit, a communication unit, and a memory. Furthermore, when the aerosol generating apparatus 1 is a hybrid device that simultaneously uses an aerosol generating article and a cartridge, the aerosol generating apparatus 1 may also include a cartridge heater. The cartridge heater receives power from the power source 130 to heat the medium and / or aerosol generating substance within the cartridge.

[0055] According to one embodiment, the sensor unit can sense the state of the aerosol generating device 1 or the state around the aerosol generating device 1, and transmit the sensed information to the processor 170. For example, the sensor unit may include a temperature sensor, a puff sensor, an insertion sensor, a reuse sensor, an overly moist sensor, a cigarette identification sensor, a cartridge sensor, a cap sensor, and / or a motion sensor. In addition, the sensor unit may also include various sensors such as a liquid level sensor for sensing the remaining liquid in the cartridge and a water immersion sensor for sensing the immersion of the aerosol generating device 1 in water.

[0056] According to one embodiment, a temperature sensor can sense the temperature of an insertion space or an aerosol-generating article. The temperature sensor can be arranged to contact or be adjacent to the insertion space or the aerosol-generating article to directly measure its temperature. Alternatively, the temperature sensor can be arranged spaced apart from the insertion space or the aerosol-generating article and to indirectly (e.g., non-contactly) measure its temperature. In one example, the temperature sensor may include an optical temperature sensor (e.g., an infrared temperature sensor).

[0057] According to one embodiment, a temperature sensor can sense the temperature of the power supply 130. The temperature sensor can be arranged adjacent to the power supply 130. For example, the temperature sensor can be attached to a surface of the power supply 130 (e.g., a battery) and / or mounted on a surface of a printed circuit board. As an example, the aerosol generating apparatus 1 may include a power protection circuit (PCM), and the temperature sensor can be arranged adjacent to the power supply 130 together with the power protection circuit.

[0058] According to one embodiment, the temperature sensor may also be arranged inside the housing (not shown) of the aerosol generating device 1 to sense the temperature inside the housing (not shown).

[0059] According to one embodiment, the suction sensor can sense the user's suction.

[0060] As an example, the suction sensor may include a pressure sensor. The pressure sensor can output a signal corresponding to the internal pressure of the aerosol generating device 1, and the processor 170 can detect the user's suction based on the aforementioned signal corresponding to the internal pressure. The internal pressure of the aerosol generating device 1 may correspond to the pressure of the gas flow channel. The suction sensor may be arranged in the aerosol generating device 1 corresponding to the gas flow channel.

[0061] As another example, the suction sensor may include a temperature sensor. When a user performs suction, a temporary temperature drop may occur in the airflow channel, insertion space, aerosol-generating material, etc. The processor 170 can detect the user's suction based on a signal output from the temperature sensor corresponding to the temperature of the airflow channel, etc.

[0062] As another example, the suction sensor may include both a pressure sensor and a temperature sensor. In this case, the temperature sensor can measure the temperature used to correct the internal pressure measured by the pressure sensor. As an example, the suction sensor can correct the signal corresponding to the internal pressure based on the temperature measured by the temperature sensor and output the corrected signal. As another example, the suction sensor can output both a signal corresponding to the temperature measured by the temperature sensor and a signal corresponding to the internal pressure measured by the suction sensor. In this case, the processor 170 can receive the signals and correct the signal corresponding to the internal pressure based on the signal corresponding to the temperature.

[0063] As another example, the suction sensor may include a capacitive sensor. In this disclosure, a capacitive sensor may also be referred to as a cap sensor or capacitive sensor. When a user performs suction, temperature changes and / or aerosol flow may occur within the insertion space, thereby potentially changing the dielectric constant inside the insertion space. The processor 170 can detect the user's suction based on a signal output from the capacitive sensor corresponding to the dielectric constant, etc., inside the insertion space.

[0064] The suction sensor is not limited to the examples above and can be implemented by a variety of sensors used to sense a user's suction.

[0065] According to one embodiment, the insertion sensing sensor is capable of sensing the insertion and / or removal of an aerosol-generating article. The insertion sensing sensor may be disposed around the perimeter of the insertion space.

[0066] As an example, the insertion sensing sensor may include a capacitive sensor. The capacitive sensor may include at least one conductor, and the at least one conductor may be arranged adjacent to the insertion space. When an aerosol-generating article is inserted into or removed from the insertion space, the dielectric constant around the conductor may change. The processor 170 may detect the insertion and / or removal of the aerosol-generating article based on a signal output from the capacitive sensor corresponding to the dielectric constant, etc., within the insertion space.

[0067] As another example, the insertion sensing sensor may include an inductive sensor. The inductive sensor may include at least one coil, and the at least one coil may be arranged adjacent to the insertion space. When the aerosol generating article (e.g., a wrapper of the aerosol generating article) includes a conductor, a change in the magnetic field may be generated around the coil through which the current flows if the aerosol generating article is inserted into or removed from the insertion space. The processor 170 may sense the insertion and / or removal of the aerosol generating article including the conductor based on the characteristics of the current output from or sensed by the inductive sensor (e.g., the frequency, current value, voltage value, inductance value, impedance value, etc. of the alternating current). Alternatively, an inductive heating element (SUS) may also be included in the aerosol generating article (e.g., the dielectric portion of the aerosol generating article). Even in this case, a change in the magnetic field around the coil may be generated based on the insertion or removal of the heating element or the like in the insertion space, and the processor 170 is able to sense the insertion and / or removal of the aerosol generating article based on the current characteristics of the inductive sensor.

[0068] The insertion sensing sensor is not limited to the examples described above, and can be implemented by various sensors (e.g., proximity sensors) used to sense the insertion and / or removal of aerosol-generating articles. Furthermore, the insertion sensing sensor can also include any combination of the examples described above. According to one embodiment, the insertion sensing sensor may also include a switch, etc., for sensing pressure generated by the aerosol-generating article.

[0069] According to one embodiment, a reuse sensing sensor can detect whether an aerosol-generated article has been reused. As an example, the reuse sensing sensor can be a color sensor for sensing the color of the aerosol-generated article. If a user uses the aerosol-generated article, the color of a portion of the outer casing of the article may change due to the generated aerosol or heating. The color sensor can output a signal corresponding to the optical characteristics (e.g., wavelength of light) of the color of the outer casing based on light reflected from it. If a color change is detected in a portion of the outer casing, the processor 170 can determine that the aerosol-generated article inserted into the insertion space has been used.

[0070] According to one embodiment, an over-humidity sensing sensor can sense whether an aerosol-generating article is in an over-humid state. For example, the over-humidity sensing sensor may include a capacitive sensor. The capacitive sensor may include at least one conductor arranged adjacent to the insertion space. The processor 170 can detect whether the aerosol-generating article is in an over-humid state based on the level of a signal corresponding to a dielectric constant, etc., output from the capacitive sensor. As an example, the processor 170 can determine the level range into which the signal level falls according to a lookup table, and determine the moisture content of the aerosol-generating article based on the determined level range.

[0071] According to one embodiment, the cigarette identification sensor can sense whether the aerosol-generating article is genuine and / or the type of aerosol-generating article.

[0072] As an example, a cigarette identification sensor may include a light sensor for sensing an identification substance (or identification mark) located on the outer surface of an aerosol-generating article (e.g., a packaging component). The light sensor may illuminate the identification substance (or identification mark) of the aerosol-generating article and sense whether the aerosol-generating article is genuine and / or its type based on the reflected light. For example, the identification substance may include a substance that emits light of a specific wavelength based on the illuminated light. The processor 170 may detect whether the aerosol-generating article is genuine and / or its type based on the range of said wavelengths.

[0073] As another example, a cigarette identification sensor may include a capacitive sensor. The dielectric constant inside the insertion space may vary depending on the type of aerosol-generating article inserted into it. The processor 170 can detect whether the aerosol-generating article is genuine and / or its type based on a signal output from the capacitive sensor corresponding to the dielectric constant, etc., inside the insertion space.

[0074] As another example, a cigarette identification sensor may include an inductive sensor. When the packaging and / or interior (e.g., the dielectric portion) of the aerosol-generating article inserted into the insertion space includes a conductor, the characteristics of the current sensed by the inductive sensor (e.g., frequency, current value, voltage value, inductance value, impedance value, etc.) may vary depending on the type of aerosol-generating article inserted into the insertion space. The processor 170 can detect whether the inserted aerosol-generating article is genuine and / or its type based on the characteristics of the current output from or sensed by the inductive sensor.

[0075] Cigarette identification sensors are not limited to the examples described above and can be implemented using various sensors for sensing whether an aerosol-generating article is genuine and / or for sensing the type of aerosol-generating article. Furthermore, cigarette identification sensors can also include any combination of the examples described above.

[0076] According to one embodiment, the cartridge sensing sensor can sense the installation and / or removal of the cartridge. For example, the cartridge sensing sensor may include an inductive sensor, a capacitive sensor, a resistive sensor, a Hall effect sensor (Hall IC), and / or an optical sensor.

[0077] According to one embodiment, a cap sensing sensor can sense the installation and / or removal of a cap. For example, the cap sensing sensor may include an inductive sensor, a capacitive sensor, a resistive sensor, a contact sensor, a Hall effect sensor (HAL IC), and / or an optical sensor. The cap may include a structure that covers at least a portion of a cartridge mounted or inserted into the aerosol generating device 1, or covers at least a portion of the housing of the aerosol generating device 1. If the cap is installed in or removed from the housing, the cap sensing sensor may output a signal corresponding to the installation or removal, and the processor 170 may sense the installation or removal of the cap based on the signal corresponding to the installation or removal.

[0078] According to one embodiment, the motion sensing sensor is capable of sensing the motion of the aerosol generating device 1. The motion sensing sensor can be implemented by at least one of an accelerometer and a gyroscope.

[0079] According to one embodiment, in addition to the sensors described above, the sensor unit may also include at least one of a humidity sensor, a barometric pressure sensor, a magnetic sensor, a position sensor (Global Positioning System (GPS)), or a proximity sensor. Since a person skilled in the art can intuitively infer the function of each sensor from its name, detailed descriptions are omitted.

[0080] According to one embodiment, the output unit can output information about the status of the aerosol generating device 1. The output unit may include, but is not limited to, a display, a haptic unit, and / or an audio output unit. For example, the information about the aerosol generating device 1 may include the charging / discharging status of the power supply 130, the preheating status of the source unit 20 or the radiation unit 30, the insertion / removal status of the aerosol generating article and / or cartridge, the installation and / or removal status of the cover, or a status where the use of the aerosol generating device 1 is restricted (e.g., abnormal object detected). The display can visually provide the user with information about the status of the aerosol generating device 1. For example, the display may include a light-emitting diode (LED), a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. If the display includes a touchpad, the display can also be used as an input unit. The haptic unit can tactilely provide the user with information about the status of the aerosol generating device 1. For example, the tactile part may include a vibrating motor, a piezoelectric element, an electrical stimulation device, etc. The sound output part can provide the user with information about the aerosol generating device 1 in an auditory manner. For example, the sound output part can convert an electrical signal into a sound signal and output the sound signal to the outside.

[0081] According to one embodiment, the input unit can receive information input by a user. For example, the input unit may include a touch panel, buttons, a keyboard, a dome switch, a jog wheel, a jog switch, etc.

[0082] According to one embodiment, the memory is hardware used to store various data processed within the aerosol generating device 1, and can store data processed in the processor 170 and data to be processed. For example, the memory may include at least one type of storage medium selected from flash memory, hard disk, multimedia card micro, card-type memory (e.g., SD (Secure Digital) or XD (Extreme Digital) memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic storage, magnetic disk, and optical disk. For example, the memory may store data such as the operating time of the aerosol generating device 1, the maximum number of puffs, the current number of puffs, at least one temperature profile, and data regarding the user's smoking pattern.

[0083] According to one embodiment, the communication unit may include at least one component for communicating with other electronic devices (e.g., portable electronic devices). For example, the communication unit may include a Bluetooth communication unit, a Bluetooth Low Energy (BLE) communication unit, a Near Field Communication unit, a Wireless Local Area Network (WLAN) communication unit, a Zigbee communication unit, an Infrared Data Association (IrDA) communication unit, a Wi-Fi Direct (WFD) communication unit, an Ultra Wideband (UWB) communication unit, an Ant+ (Adaptive Network Topology) communication unit, a Cellular Network communication unit, an Internet communication unit, or a Computer Network (e.g., a Local Area Network (LAN) or Wide Area Network (WAN)) communication unit, etc.

[0084] According to one embodiment, the processor 170 can control the temperature of the insertion space or aerosol-generating article by controlling the amplification rate of the source unit 20 (e.g., power amplifier 230). The processor 170 can control the amplification rate of the source unit 20 (e.g., power amplifier 230) based on the temperature of the insertion space or aerosol-generating article sensed by a temperature sensor. The processor 170 can also control the amplification rate of the source unit 20 (e.g., power amplifier 230) based on temperature profiles and / or power profiles stored in a memory.

[0085] Furthermore, the processor 170 can control the temperature of the cartridge heater by supplying power to the cartridge heater via the control power supply 130. The processor 170 can control the temperature of the cartridge heater and / or the power supplied to the cartridge heater based on the temperature of the cartridge heater sensed by a temperature sensor. The processor 170 can also control the temperature of the cartridge heater and / or the power supplied to the cartridge heater based on temperature and / or power curves stored in memory.

[0086] According to one embodiment, the processor 170 can prevent overheating of the insertion space, the aerosol generating article, and / or the cartridge heater. For example, the processor 170 can control the operation of the power conversion circuit based on the temperature of the insertion space, the aerosol generating article, and / or the cartridge heater exceeding a preset limit temperature, thereby reducing the power supplied to the source unit 20 or the cartridge heater or interrupting the power supply to the source unit 20 or the cartridge heater.

[0087] According to one embodiment, the processor 170 can control the power supplied to the source unit 20 or the cartridge heater based on the results sensed by the sensor unit.

[0088] According to one embodiment, the processor 170 can control the power supply to the source unit 20 or the cartridge heater based on the insertion and / or removal of the aerosol generating article relative to the insertion space. For example, if the insertion sensing sensor determines that the aerosol generating article has been inserted into the insertion space, the processor 170 can control the supply of power to the source unit 20 or the cartridge heater. If the insertion sensing sensor determines that the aerosol generating article has been removed from the insertion space, the processor 170 can cut off the power supply to the source unit 20 or the cartridge heater. If the temperature of the insertion space or the aerosol generating article is above a limit temperature or the slope of the temperature change of the insertion space or the aerosol generating article is above a set slope, the processor 170 can determine that the aerosol generating article has been removed from the insertion space.

[0089] According to one embodiment, the processor 170 can control the power supply time and / or power supply amount to the source unit 20 or the cartridge heater based on the state of the aerosol generating article. For example, if the processor determines that the aerosol generating article is in an over-humid state using an over-humidity sensing sensor, the processor 170 can increase the power supply time to the source unit 20 or the cartridge heater (e.g., preheating time).

[0090] According to one embodiment, the processor 170 can control the power supply to the source unit 20 or the cartridge heater based on whether the aerosol generating article has been reused. For example, if the processor 170 determines that the aerosol generating article has been used, it can cut off the power supply to the source unit 20 or the cartridge heater.

[0091] According to one embodiment, the processor 170 can control the power supply to the source unit 20 or the cartridge heater based on whether the cartridge is attached and / or removed. For example, if the cartridge sensing sensor determines that the cartridge is in a detached state, the processor 170 can control the power supply to the source unit 20 or the cartridge heater to be interrupted or not to be supplied with power to the source unit 20 or the cartridge heater.

[0092] According to one embodiment, the processor 170 can control the power supply to the source unit 20 or the cartridge heater based on whether the aerosol-generating material of the cartridge is depleted. For example, if the processor 170 determines that the temperature of the cartridge heater exceeds a limit temperature during the preheating period of the cartridge heater (i.e., the preheating interval), it can determine that the aerosol-generating material of the cartridge is depleted. In the case that the aerosol-generating material of the cartridge is determined to be depleted, the processor 170 can cut off the power supply to the source unit 20 or the cartridge heater.

[0093] According to one embodiment, the processor 170 can control the power supply to the source unit 20 or the cartridge heater based on whether the cartridge is available. For example, based on data stored in the memory, if the processor 170 determines that the current number of puffs exceeds the maximum number of puffs set for the cartridge, it can determine that the cartridge cannot be used. Alternatively, the processor 170 can determine that the cartridge cannot be used if the total heating time of the cartridge heater exceeds a preset maximum time or the total electrical power supplied to the cartridge heater exceeds a preset maximum electrical power. In this case, the processor 170 can control the power supply to the source unit 20 or the cartridge heater to be interrupted or not to be supplied with power to the source unit 20 or the cartridge heater.

[0094] According to one embodiment, the processor 170 can control the power supply to the source unit 20 or the cartridge heater based on the user's inhalation. For example, the processor 170 can use a vaping sensor to determine whether an inhalation has occurred and / or the intensity of the inhalation. If the number of inhalations has reached a preset maximum number of inhalations and / or no inhalation is detected for a preset time, the processor 170 can cut off the power supply to the source unit 20 or the cartridge heater. When an inhalation is sensed, the processor 170 can control the power supply to the source unit 20 or the cartridge heater.

[0095] According to one embodiment, processor 170 can control the power supply to source unit 20 or cartridge heater based on whether the aerosol-generating article (or cartridge) is genuine and / or its type. For example, processor 170 can use a cigarette recognition sensor to detect whether the aerosol-generating article is genuine and / or its type. As an example, if the aerosol-generating article (or cartridge) is detected to be counterfeit, processor 170 can cut off the power supply to source unit 20 or cartridge heater. If the aerosol-generating article (or cartridge) is detected to be genuine, processor 170 can control (e.g., start) the power supply to source unit 20 or cartridge heater. As another example, processor 170 can control the power supply to source unit 20 or cartridge heater in different ways depending on the type of aerosol-generating article (or cartridge). More specifically, if the aerosol generating article (or cartridge) is detected as a first aerosol generating article (or first cartridge), the processor 170 can control the amplification rate of the source unit 20, or the temperature and / or power of the cartridge heater, based on a first temperature curve (or first power curve). If the aerosol generating article (or second cartridge) is detected as a second aerosol generating article (or second cartridge), the processor 170 can control the amplification rate of the source unit 20, or the temperature and / or power of the cartridge heater, based on a second temperature curve (or second power curve).

[0096] According to one embodiment, the processor 170 can control the output unit based on the results sensed by the sensor unit. For example, if the number of puffs counted by the puff sensor reaches a preset number, the processor 170 can control the output unit to provide information that the aerosol generating device 1 is about to end its operation in a visual, tactile, and / or audible manner. For example, the processor 170 can control the output unit to provide information about the temperature of the insertion space, the aerosol generating article, or the cartridge heater in a visual, tactile, and / or audible manner.

[0097] According to one embodiment, the processor 170 can store and update the history of events that have occurred in the memory based on the occurrence of predetermined events. For example, events may include operations performed in the aerosol generating device 1 such as sensing the insertion of an aerosol generating article, starting heating of the aerosol generating article, sensing inhalation, ending inhalation, sensing overheating, sensing overvoltage applied to the cartridge heater, ending heating of the aerosol generating article, turning the power supply of the aerosol generating device 1 on / off, starting charging of the power supply 130, sensing overcharging of the power supply 130, and ending charging of the power supply 130. For example, the event history may include the date and time of the event, log data corresponding to the event, etc. For example, if the predetermined event is sensing the insertion of an aerosol generating article, the log data corresponding to the event may include data such as the sensing value of the insertion sensing sensor. For example, if the predetermined event is sensing overheating of the cartridge heater, the log data corresponding to the event may include data such as the temperature of the cartridge heater, the voltage applied to the cartridge heater, and the current flowing in the cartridge heater.

[0098] According to one embodiment, the processor 170 can control the communication unit to form a communication link with an external device such as a user's mobile terminal.

[0099] According to one embodiment, if authentication data is received from an external device via a communication link, the processor 170 can remove usage restrictions on at least one function of the aerosol generating device 1 (e.g., heating function). For example, the authentication data may include the user's birthday, a unique phone number representing the user, and whether the user has completed authentication.

[0100] According to one embodiment, the processor 170 can send data about the status of the aerosol generating apparatus 1 (e.g., remaining capacity of the power supply 130, operating mode, etc.) to an external device via a communication link. The sent data can be output through a display or the like on the external device.

[0101] According to one embodiment, if a location search request for the aerosol generating device 1 is received from an external device via a communication link, the processor 170 can control the output unit to perform an operation corresponding to the location search. For example, the processor 170 can control the tactile unit to vibrate, or control the display to output objects corresponding to the location search and the end of the search.

[0102] According to one embodiment, if firmware data is received from an external device via a communication link, the processor 170 can perform a firmware update.

[0103] According to one embodiment, the processor 170 can send data about the detection values ​​of at least one sensor unit to an external server (not shown) via a communication link, and can receive and store a learning model generated by learning the detection values ​​through machine learning such as deep learning from the server. The processor 170 can use the learning model received from the server to perform operations such as determining the user's inhalation pattern and generating a temperature profile.

[0104] Although Figure 1 Although not shown, the aerosol generating device 1 may also include a power protection circuit. The power protection circuit may include at least one switching element and may disconnect the circuit of the power supply 130 in response to overcharging and / or over-discharging of the power supply 130.

[0105] The aerosol generating article mentioned in this disclosure may include at least one aerosol generating rod (e.g., a medium section) and at least one filter rod. The radiating section 30 may be arranged corresponding to at least one aerosol generating rod and may be designed differently depending on the arrangement and / or position of the aerosol generating rod and the filter rod. The aerosol generating rod may contain at least one of nicotine, an aerosol generating substance, and additives. For example, the aerosol generating substance may contain glycerin (e.g., vegetable glycerin (VG)) and / or propylene glycol (PG), or may contain a variety of other substances. For example, the additive may contain flavoring agents and / or organic acids, or may contain a variety of other substances. For example, the aerosol generating rod may contain an aerosol generating substrate (e.g., a sheet) impregnated with a liquid non-tobacco substance (e.g., the aerosol generating substance and / or nicotine), and / or may contain solid tobacco substances (e.g., tobacco leaves, reconstituted tobacco, etc.). Tobacco substances can be contained in the aerosol generating rod in various forms such as shreds, granules, and powder. According to one embodiment, the additives in the aerosol generating rod may contain an alkaline substance. Based on the alkaline substance, the nicotine in the tobacco substances contained in the aerosol generating rod can have an alkaline pH value (e.g., pH 7.0 or higher). In this case, the aerosol generating rod can release free base nicotine even at lower temperatures. According to one embodiment, the aerosol generating rod may comprise two or more aerosol generating rods, and the two or more aerosol generating rods may each contain tobacco substances and / or non-tobacco substances. Additionally, although not shown, at least one aerosol generating rod and at least one filter rod may each be wrapped by at least one wrapper, and / or wrapped together by at least one wrapper. In this disclosure, the aerosol generating article may also be referred to as a stick.

[0106] The cartridge mentioned in this disclosure may contain an aerosol-generating substance in any of the following states: liquid, solid, gaseous, or gel. The aerosol-generating substance may comprise a liquid composition. For example, the liquid composition may be a liquid containing substances found in tobacco (including volatile tobacco flavor components) or a liquid containing non-tobacco substances. Additionally, the cartridge may include a storage section for containing the aerosol-generating substance and / or a liquid delivery member for impregnating (containing) the aerosol-generating substance. For example, the liquid delivery member may include a core material such as cotton fiber, ceramic fiber, glass fiber, or porous ceramic. The cartridge heater may be included in the cartridge in the form of a coil surrounding (or winding) the liquid delivery member or in a structure contacting one side of the liquid delivery member. Alternatively, the cartridge heater may also be included in an aerosol-generating device 1 that can be separated from the cartridge.

[0107] Figure 2 This is a structural diagram of a resonator based on a waveguide according to one embodiment.

[0108] Aerosol generating devices (e.g.: Figure 1 The aerosol generating apparatus 1) generates aerosols by heating the aerosol generating article by dielectric heating, which can be radiated by a radiating element (e.g.: Figure 1 The radiating part 30) radiates electromagnetic waves into the insertion space. The shape of the insertion space can be configured to allow the electromagnetic waves to resonate effectively. The electromagnetic waves can be microwaves. For example, the wavelength range of microwaves can be from 1 millimeter (mm) to 1 meter (m).

[0109] According to one embodiment, the insertion space may include a resonator 351 that causes electromagnetic waves to resonate and an insertion portion 350 for arranging aerosol-generating articles. The electromagnetic waves that resonate in the resonator 351 can escape into the insertion portion 350, and the escaped electromagnetic waves can heat the aerosol-generating articles.

[0110] According to one embodiment, resonator 351 can be formed based on waveguide 300, wherein waveguide 300 includes walls 321, 322, peripheral conductor 311, and center conductor 340. Resonator 351 can be related to the above-mentioned... Figure 1The resonant section described corresponds to this. Resonator 351 can generate an amplified electromagnetic field by causing the supplied microwaves to resonate. At least a portion of the electromagnetic field generated by the microwave resonance can heat an aerosol-generating matrix inserted inside the waveguide, thereby generating an aerosol. According to one embodiment, resonator 351 can be a quarter-wavelength resonator, with a first end of resonator 351 forming a short circuit through a metal wall and a second end forming an open circuit. The outer conductor 311 and the center conductor 340 can each be formed as cylindrical and coaxial. Resonator 351 can be formed by a cavity between the cylindrical outer conductor 311 and the center conductor 340.

[0111] According to one embodiment, walls 321, 322, peripheral conductor 311, and central conductor 340 may be metallic. Waveguide 300 may be a coaxial shape with an internally hollow interior. Furthermore, an insertion portion 350 may be formed that connects to the internal space of waveguide 300. Insertion portion 350 may extend into the internal cylindrical space formed by central conductor 340 and connect to wall 322. The material of insertion portion 350 may differ from the material of waveguide 300. For example, the material of waveguide 300 may be a material that prevents the propagation of electromagnetic fields generated in the internal cavity, while the material of insertion portion 350 may be a material that does not affect the propagation of electromagnetic fields.

[0112] The center conductor 340 can be connected to the first end of the resonator 351 via the first wall 321. The center conductor 340 may not be connected to other metals and may include an open end 331. An insertion portion 350 may be formed inside the waveguide 300, such that the aerosol generation matrix 370 inserted into the waveguide 300 may be located at the ends of the open end 331 and the insertion portion 350.

[0113] The resonator 351 can be formed from a first end based on the first wall 321 of the waveguide 300 and a portion of the center conductor 340. That is, the resonator 351 can be a ring around the center conductor 340.

[0114] According to one embodiment, the first end of the resonator 351 can be formed as a closed end where the outer conductor (or wall) and the center conductor are connected, and the second end of the resonator 351 opposite to the first end can be formed as an open end where the outer conductor (or wall) and the center conductor are not connected and are separated from each other, so that the resonator 315 has 1 / 4 of the microwave wavelength. The length between the first end and the second end can be an integer multiple of 1 / 4 of the microwave wavelength within the resonator 351. When microwaves are confined in a closed space such as the resonator 351, their wavelength will be different from the microwave wavelength radiated in free space. For example, the microwave wavelength can vary based on the structure of the resonator 351. For example, the microwave wavelength in the dielectric within the resonator 351 will shorten as the dielectric constant of the dielectric increases.

[0115] According to one embodiment, a user can insert an aerosol generating matrix 370 through an insertion portion 350 such that the aerosol generating matrix 370 is adjacent to a first end based on a first wall 321 and an open end 331 of a center conductor 340 located on the opposite side. The aerosol generating matrix 370 can be a tobacco medium. For example, the aerosol generating matrix 370 can contain aerosol forming agents such as glycerol and propylene glycol.

[0116] Microwave coupler 332 supplies microwaves to the cavity of waveguide 300, and the microwaves resonate through resonator 351. The resonating microwaves generate an amplified electromagnetic field within resonator 351, and at least a portion of the electromagnetic field can heat the aerosol-generating matrix 370.

[0117] Through the open end 331 formed by not connecting the center conductor 340 and the insertion portion 350, at least a portion of the electromagnetic field can also act on the aerosol generating matrix 370 through the open end 331. In particular, since a strong electromagnetic field is formed around the open end 331, it is easier to heat the aerosol generating matrix 370. For example, the strongest electromagnetic field can be generated at the open end 331 where a resonance peak is formed on the side of the resonator 351. A portion of the formed electromagnetic field escapes to the aerosol generating matrix 370 adjacent to the resonator 351, and the escaped electromagnetic field can heat the aerosol generating matrix 370. That is to say, the above-described method of heating the aerosol generating matrix 370 is not to directly heat the aerosol generating matrix located inside the resonator 351, but to heat the aerosol generating matrix based on the electromagnetic field escaping through the open end 331.

[0118] Furthermore, based on the structure of the resonator 351, leakage of electromagnetic fields into the insertion portion 350, which is not within the region of the resonator 351, can be prevented. In other words, electromagnetic fields escaping into the aerosol generating matrix 370 will only heat the aerosol generating matrix 370 and will not propagate outwards (e.g., towards the user's mouth). Since the electromagnetic field will not propagate (or leak) into spaces outside the resonator 351 region, the aerosol generating device 1 does not need to have a separate function or structure for shielding electromagnetic fields.

[0119] According to one embodiment, the diameter of the insertion portion 350 can be less than half the microwave wavelength. If the diameter of the insertion portion 350 is less than half the microwave wavelength, the microwaves that cause resonance can be cut off.

[0120] Users can inhale aerosols generated by heated aerosol generating matrix 370 through cigarette smoke.

[0121] According to one embodiment, the cavity of the resonator 351 may be filled with a low-loss dielectric (e.g., polytetrafluoroethylene, quartz, alumina, etc.). Filling the cavity with a low-loss dielectric can further reduce the size of the resonator 351.

[0122] Although reference Figure 2 An aerosol generating device is described that uses a resonator based on waveguide formation to make electromagnetic waves resonate, but the way electromagnetic waves resonate is not limited to this.

[0123] Figure 3 This is a flowchart of a capacitance sensing method according to one embodiment.

[0124] Aerosol generating devices (e.g.: Figure 1 The aerosol generating device 1) can perform steps 310 to 330. The aerosol generating device may include a signal generation circuit (e.g.: Figure 1 RF signal generation circuit 210), resonator (e.g.: Figure 2 Resonator 351), coupler (e.g.: Figure 2 The microwave coupler 332) and the processor (e.g.: Figure 1 The processor 170).

[0125] In step 310, the aerosol generating device can control the signal generating circuit to generate a first signal of a first frequency band and a second signal of a second frequency band according to a predetermined period.

[0126] The signal generation circuit of the aerosol generating device can generate signals of different frequencies based on the input voltage. The processor of the aerosol generating device can apply control signals (e.g., DC signals) to the signal generation circuit. The signal generation circuit can receive the control signals from the processor and generate signals with frequencies corresponding to the received control signals.

[0127] According to one embodiment, the aerosol generating device can store a first control signal corresponding to a first frequency band and a second control signal corresponding to a second frequency band in the form of a lookup table. According to another embodiment, the aerosol generating device can calculate the first control signal corresponding to the first frequency band and the second control signal corresponding to the second frequency band in real time through at least one calculation. The processor of the aerosol generating device can apply the first and second control signals to a signal generation circuit at a predetermined period. The signal generation circuit can generate a first signal corresponding to the first control signal received from the processor in the first frequency band and a second signal corresponding to the second control signal received from the processor in the second frequency band at a predetermined period.

[0128] According to one embodiment, the first frequency band and the second frequency band can be different from each other. For example, the first frequency band can be above 1 GHz. For example, the first frequency band can be the 915 MHz, 2.45 GHz, and / or 5.8 GHz band. The second frequency band can be lower than the first frequency band. For example, the second frequency band can be lower than 1 GHz. Thus, the first signal can correspond to a high-frequency signal, and the second signal can correspond to a low-frequency signal. The first signal of the relatively high-frequency first frequency band can be used to heat the aerosol generating device. The second signal of the relatively low-frequency second frequency band can be used to sense capacitance based on the reflected signal corresponding to the second signal.

[0129] The aerosol generating device can control the signal generating circuit to generate a first signal of a first frequency band in a predetermined first period and a second signal of a second frequency band in a predetermined second period. For example, the aerosol generating device can control the signal generating circuit to generate the first signal for 1 second (s) and the second signal for 1 millisecond (ms) in an alternating manner.

[0130] Drive amplifier (e.g.: Figure 1 The driver amplifier 220 can amplify the first and second signals generated by the signal generation circuit. Power amplifiers (e.g.: Figure 1 The power amplifier 230 can amplify the power of the first and second signals received from the drive amplifier and direct it to the radiating section (e.g., Figure 1 The radiating section 30 provides a first signal and a second signal with high power. The radiating section may include a first antenna for radiating the first and second signals into the insertion space (e.g., ...). Figure 2 (Resonator 351 and / or insertion part 350).

[0131] The aerosol generating device can radiate a first signal and a second signal at a predetermined period to at least a portion of the insertion space using a first antenna, which functions as a single antenna. The electromagnetic wave can resonate within the insertion space using the first signal, which is a high-frequency signal. The aerosol generating device can adjust a first control signal input to the signal generation circuit to make a first frequency band of the first signal correspond to or approach the resonance condition of the insertion space.

[0132] In step 320, the aerosol generating device can acquire the reflected signal corresponding to the second signal of the second frequency band.

[0133] After the first antenna radiates the second signal, the aerosol generating device can acquire the reflected signal corresponding to the second signal reflected from the insertion space. For example, when an aerosol generating article is inserted into the insertion space, the aerosol generating device can acquire the reflected signal corresponding to the second signal reflected from the aerosol generating article after the first antenna radiates the second signal. The aerosol generating device can acquire the reflected signal corresponding to the first signal and the reflected signal corresponding to the second signal respectively after radiating the first and second signals through the first antenna. Here, the acquired reflected signals can be separated based on frequency, thereby identifying the reflected signal corresponding to the second signal.

[0134] In step 330, the aerosol generating device can determine capacitance information corresponding to at least a portion of the insertion space of the aerosol generating article based on the reflected signal corresponding to the second signal.

[0135] Capacitance information may include one or more of the following: capacitance value, one or more capacitance values, the average of one or more capacitance values, and / or a range of one or more capacitance values ​​(e.g., minimum and maximum values). For example, an aerosol generating apparatus may determine one or more capacitance values ​​based on an acquired reflected signal, wherein the reflected signal is obtained in response to the radiation of a second signal at a predetermined low-frequency period.

[0136] Aerosol generating devices can determine the reflectance coefficient ( ), reflectance ( The intensity of the radiated second signal is the ratio of the intensity of the reflected signal corresponding to the second signal (or the return voltage signal (RVS) corresponding to the second signal). The aerosol generating device can determine the capacitance information corresponding to at least a portion of the insertion space of the aerosol-generating article based on the reflection coefficient. The aerosol generating device can determine the capacitance information according to the following [Formula 1]: [Formula 1]

[0137] In [Formula 1], Indicates capacitance. This represents the load impedance, which is the impedance of the incident medium of the second signal corresponding to the insertion space of the aerosol generating device. The following formula [2] can be used for calculation: [Formula 2]

[0138] In [Formula 2], Indicates the reference impedance (e.g., the impedance of a transmission line). This represents the reflection coefficient. The aerosol generating device can determine the reflection coefficient based on the reflected signal corresponding to the second signal, determine the load impedance based on the determined reflection coefficient, and determine the capacitance based on the determined load impedance.

[0139] According to one embodiment, after the aerosol generating device is powered on, it can determine the capacitance information corresponding to at least a portion of the insertion space of the aerosol generating article at predetermined intervals.

[0140] The aerosol generating device can alternately generate and radiate a first signal and a second signal at a predetermined cycle to minimize interference between the two signals. The aerosol generating device can perform in parallel operations of heating the aerosol-generating article using the first signal and determining capacitance information using the second signal.

[0141] Figure 4 This is a flowchart of a method performed based on capacitance information according to one embodiment.

[0142] Steps 410 and 420 can be performed by an aerosol generating device (e.g., Figure 1 The aerosol generating device 1) performs the operation. The aerosol generating device may include a signal generation circuit (e.g., Figure 1 RF signal generation circuit 210), resonator (e.g.: Figure 2 Resonator 351), coupler (e.g.: Figure 2 The microwave coupler 332) and the processor (e.g.: Figure 1 The processor 170).

[0143] According to one embodiment, it can be referred to Figure 4 Step 410 is performed after step 330 described above. The aerosol generating device can be based on the insertion space of the aerosol generating article determined according to the reflected signal (e.g., ...). Figure 2 Step 410 is performed on the capacitance information corresponding to at least a portion of the insertion part 350.

[0144] In step 410, the aerosol generating device can determine whether the aerosol generating article is inserted into the aerosol generating device based on the capacitance information.

[0145] Aerosol-generating articles may include aerosol-generating matrices (e.g.: Figure 2The aerosol-generating matrix 370 includes, but is not limited to, one or more of glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. Furthermore, the aerosol-generating article may contain other additives, such as flavoring agents, humectants, and / or organic acids. Additionally, flavoring liquids such as menthol and humectants can be sprayed onto the smoke tube of the aerosol-generating article, thereby adding to the aerosol-generating article.

[0146] The capacitance information sensed when the insertion space of the aerosol generating device is empty may differ from the capacitance information sensed when the aerosol generating article is inserted into the insertion space of the aerosol generating device. Because the density of the aerosol generating article is higher than that of air, the capacitance corresponding to at least a portion of the insertion space of the aerosol generating device increases when the aerosol generating article is inserted into the insertion space.

[0147] According to one embodiment, an aerosol generating article can be determined to have been inserted when the capacitance corresponding to at least a portion of the insertion space of the aerosol generating device meets a predetermined benchmark. For example, an aerosol generating article can be determined to have been inserted when the capacitance corresponding to at least a portion of the insertion space of the aerosol generating device is above (or exceeds) a threshold. For example, an aerosol generating article can be determined not to have been inserted when the capacitance corresponding to at least a portion of the insertion space of the aerosol generating device is below (or less than) a threshold. For example, an aerosol generating article can be determined to have been removed when the capacitance corresponding to at least a portion of the insertion space of the aerosol generating device is below (or less than) a threshold.

[0148] According to one embodiment, references can be executed. Figure 3 Step 420 is executed after step 330 described above. The aerosol generating device can execute step 420 based on capacitance information corresponding to at least a portion of the insertion space of the aerosol generating device, determined based on the reflected signal.

[0149] In step 420, the aerosol generating device can determine the type of aerosol-generating article inserted into the aerosol generating device based on capacitance information.

[0150] Different types of aerosol generating articles can contain different aerosol generating matrices. Alternatively, the composition ratio of the aerosol generating matrices in different types of aerosol generating articles can differ. Therefore, the water content of different types of aerosol generating articles will also differ. The dielectric constant of the aerosol generating article will vary depending on its water content. For example, the higher the water content of the aerosol generating article, the higher its dielectric constant. Depending on the dielectric constant of the aerosol generating device, the capacitance information corresponding to at least a portion of the insertion space of the aerosol generating article will also differ. For example, the higher the dielectric constant of the aerosol generating article, the larger the capacitance corresponding to at least a portion of the insertion space of the aerosol generating article. In general, the sensed capacitance information will vary depending on the type of aerosol generating article inserted into the insertion space of the aerosol generating device.

[0151] According to one embodiment, the aerosol generating apparatus can store reference capacitance information (e.g., capacitance value or capacitance range) corresponding to each of a variety of aerosol-generating articles in the form of a lookup table. The aerosol generating apparatus can confirm the reference capacitance information, including sensed capacitance information, based on the lookup table. The aerosol generating apparatus can identify the type of aerosol-generating article corresponding to the confirmed reference capacitance information. The aerosol generating apparatus can determine the identified type as the type of aerosol-generating article to be inserted into the aerosol generating apparatus.

[0152] According to one embodiment, the aerosol generating apparatus can determine capacitance information a predetermined number of times (e.g., two, three, or four times) after determining that an aerosol generating article has been inserted (or after performing step 410). The aerosol generating apparatus can take an average of the capacitance information determined over the predetermined number of times and determine the type of aerosol generating article based on the average value.

[0153] According to one embodiment, steps 410 and 420 can be performed selectively or sequentially. For example, the aerosol generating apparatus can determine the type of aerosol generating article based on the corresponding capacitance information, based on the determination that an aerosol generating article has been inserted. For example, after determining that an aerosol generating article has been inserted (or after performing step 410), the aerosol generating apparatus can re-determine the capacitance information based on the reflected signal corresponding to the acquired second signal. The aerosol generating apparatus can then determine the type of aerosol generating article based on the re-determined capacitance information.

[0154] According to one embodiment, the aerosol generating apparatus can determine the moisture content of the aerosol-generated article. The method for determining the moisture content of the aerosol-generated article will be described below with reference to [Formulas 3] to [Formulas 7].

[0155] like Figure 3As shown, the aerosol generating device can acquire a reflected signal corresponding to the second signal. As the radiated second signal passes through the insertion space of the aerosol generating device and / or is inserted into the aerosol generating article of the aerosol generating device, the power of the acquired reflected signal is attenuated compared to the second signal. The attenuated power of the reflected signal corresponding to the second signal (…) It can be represented by the following [Formula 3]: [Formula 3]

[0156] in: Let P(z) represent the propagation distance, and let P(z) represent the electric field at a propagation distance of z. Indicates the initial power. This represents the attenuation constant. Attenuation constant ( This can be represented by the following [Formula 4]: [Formula 4]

[0157] in, Represents angular frequency. Represents the speed of light. Indicates permeability, This indicates dielectric loss.

[0158] The aerosol generating device can sense the attenuation power and phase change of the reflected signal corresponding to the second signal. Based on the sensed attenuation power and phase change of the reflected signal corresponding to the second signal, the aerosol generating device can determine the dielectric loss of the aerosol-generated article according to [Formula 3] and [Formula 4].

[0159] Meanwhile, the reference impedance (e.g., the impedance of the transmission line) The complex permittivity of the aerosol-generated material can be represented by [Equation 5]. () can be represented by [Formula 6].

[0160] [Formula 5]

[0161] in: Indicates permeability, Represents the vacuum permittivity. This represents the relative permittivity of the aerosol-generating material.

[0162] [Formula 6]

[0163] It can represent the dielectric constant. This can represent dielectric loss. The aerosol generating apparatus can determine the relative permittivity of the aerosol-generated article according to [Equation 5]. The aerosol generating apparatus can determine the real part (or dielectric constant) of the complex dielectric constant of the aerosol-generated article according to the relative permittivity of the aerosol-generated article. Accordingly, the aerosol generating apparatus can determine the complex dielectric constant of the aerosol-generated article according to its dielectric loss and dielectric constant, wherein the dielectric loss and dielectric constant of the aerosol-generated article are determined based on the attenuation power and phase change of the reflected signal corresponding to the second signal.

[0164] The dielectric constant of aerosol-generating articles varies depending on their water content. For example, the lower the water content of an aerosol-generating article, the lower its dielectric constant. The complex dielectric constant of aerosol-generating articles (…) This can be expressed by [Formula 7]: [Formula 7]

[0165] in: The complex permittivity of the aerosol generating device is represented. This represents the dielectric constant of the aerosol-generating material in a dry state. The dielectric constant representing the moisture content in the aerosol-generating material. This indicates the water content (e.g., mass ratio) of the aerosol-generating article. The aerosol generating device can determine the water content of the aerosol-generating article based on the complex permittivity of the aerosol-generating article according to [Formula 7].

[0166] An aerosol generating device can determine whether an aerosol-generated article has been used based on its moisture content. According to one embodiment, if the moisture content of the aerosol-generated article meets a predetermined first criterion, the aerosol generating device can determine that the aerosol-generated article has been used. For example, if the moisture content of the aerosol-generated article is less than (or equal to) a threshold, the aerosol generating device can determine that the aerosol-generated article has been used. According to another embodiment, if the moisture content of the aerosol-generated article meets a second predetermined criterion, the aerosol generating device can determine that the aerosol-generated article has not been used. For example, if the moisture content of the aerosol-generated article is above (or greater than) a threshold, the aerosol generating device can determine that the aerosol-generated article has not been used.

[0167] Figure 5 This is a flowchart of a method for performing a capacitance-based information according to an embodiment.

[0168] Steps 510 and 520 can be performed by an aerosol generating device (e.g., Figure 1 The aerosol generating device 1) performs the operation. The aerosol generating device may include a signal generation circuit (e.g., Figure 1 RF signal generation circuit 210), resonator (e.g.: Figure 2 Resonator 351), coupler (e.g.: Figure 2 The microwave coupler 332) and the processor (e.g.: Figure 1 The processor 170).

[0169] According to one embodiment, reference can be completed. Figure 3 Steps 510 and 520 are performed after step 330 described above. The aerosol generating device can determine, based on the reflected signal, at least a portion of the aerosol generating article insertion space (e.g., ...). Figure 2 The capacitance information corresponding to the insertion part 350 is used to execute steps 510 and 520.

[0170] An aerosol generating device generates aerosols by heating an aerosol generating matrix inserted into an aerosol generating article. Users can then inhale the generated aerosols to smoke. During smoking, the water content of the aerosol generating article varies as the user inhales the aerosol through the aerosol generating article—that is, with each puffing action. For example, the water content decreases each time the user inhales the aerosol. The dielectric constant of the aerosol generating article also changes with its water content. For example, the lower the water content, the lower the dielectric constant. Therefore, the aerosol generating device can determine whether the user has inhaled the aerosol through puffing based on the change in the dielectric constant of the aerosol generating article.

[0171] In step 510, the aerosol generating device can determine the change in dielectric constant of the aerosol generating article inserted into the aerosol generating device based on capacitance information.

[0172] The correlation between the change in dielectric constant and the change in capacitance of aerosol-generated articles can be expressed by [Equation 8].

[0173] [Formula 8]

[0174] in: Indicates capacitance. This indicates the change in capacitance. The dielectric constant (or relative dielectric constant) of the aerosol-generating material. This represents the change in the dielectric constant of the aerosol-generating material.

[0175] According to one embodiment, the aerosol generating apparatus can store the dielectric constant (or relative dielectric constant) of the aerosol-generated article. For example, the aerosol generating apparatus can store the dielectric constant corresponding to each of the various types of aerosol-generated articles in the form of a lookup table. (Refer to the above...) Figure 4 The aerosol generating device can determine the type of aerosol-generating article inserted into it. The aerosol generating device can determine the dielectric constant corresponding to the determined type of aerosol-generating article based on a lookup table. The aerosol generating device can determine the change in dielectric constant of the aerosol-generating article based on the determined dielectric constant and capacitance information corresponding to at least a portion of the insertion space of the aerosol-generating article. In [Formula 8], This can represent the capacitance corresponding to at least a portion of the insertion space of the aerosol-generating article before heating begins. For example, It can represent the capacitance after the aerosol-generated item is inserted but before heating begins, for example, capacitance information used to determine the type of aerosol-generated item.

[0176] In step 520, the aerosol generating device can determine whether the user is pumping the aerosol generating device based on the change in dielectric constant.

[0177] According to one embodiment, if the change in dielectric constant meets a predetermined benchmark, the aerosol generating device can determine that a user has inhaled the aerosol. For example, if the change in dielectric constant is above (or greater than) a threshold value, the aerosol generating device can determine that a user has inhaled the aerosol.

[0178] Figure 6a This is a block diagram of an aerosol generating apparatus including multiple antennas according to one embodiment.

[0179] According to one embodiment, the aerosol generating apparatus 1 may include a source unit 600 (e.g.: Figure 1 The source section 20) and the radiation section 60 (e.g.: Figure 1 (Radiation section 30). Although not shown, the aerosol generating apparatus 1 may include a reference section. Figure 1 The control unit 10 and source unit 20 are described below. For example, the aerosol generating apparatus 1 may include a power connector 110, a charging circuit 120, a power supply 130, a first power converter 140, a second power converter 150, a third power converter 160, and / or a processor 170. The source unit 600 may include a drive amplifier 220, a power amplifier 230, a directional coupler 240, and / or a temperature sensing circuit 250, as described above. Figure 1 Repeated parts of the description will be omitted.

[0180] According to one embodiment, in reference Figure 3In the description, the radiating section can radiate a first signal of a first frequency band and a second signal of a second frequency band into at least a portion of the insertion space through a first antenna acting as a single antenna at a preset period. (Refer to...) Figure 6a The radiating section 60 of the aerosol generating device 1 may also include one or more antennas in a frequency band different from the first frequency band of the first signal. For example, the radiating section 60 of the aerosol generating device 1 may include not only a first antenna 61 for radiating the first signal and the second signal, but also a second antenna 62 and a third antenna 63 having a frequency band different from the first frequency band. Figure 6a The number of antennas shown is merely an example, and the number of antennas included in the aerosol generating device 1 is not limited to that disclosed herein.

[0181] Reference Figures 3 to 5 This explains that a first signal, representing a relatively high-frequency band, can be used to heat the aerosol generating device, while a second signal, representing a relatively low-frequency band, can be used to sense capacitance based on a reflected signal corresponding to the second signal. In the following text, to distinguish it from the signal used for sensing capacitance, the signal used to heat the aerosol generating article can be referred to as the "heating signal," and the frequency band of the heating signal can be referred to as the "heating frequency band." (Refer to the above...) Figures 3 to 5 The first frequency band can be understood as the "first heating frequency band", and the first signal can be understood as the "first heating signal".

[0182] The second antenna 62 and the third antenna 63 can respectively radiate a second heating signal and a third heating signal in a frequency band different from the first heating frequency band. The second antenna 62 can radiate a second heating signal in a second heating frequency band different from the first heating frequency band. The third antenna 63 can radiate a third heating signal in a third heating frequency band different from the first and second heating frequency bands. For example, the frequencies of the second and third heating frequency bands can be above 1 GHz. As relatively high-frequency bands, the second and third heating signals can be used to heat aerosol-generating articles.

[0183] Source unit 600 may include signal generation circuit 601 (e.g.: Figure 1 The RF signal generation circuit 210 and the switching circuit 602.

[0184] The signal generation circuit 601 may include a voltage-controlled oscillator (VCO) that generates RF signals of different frequencies based on the input voltage. The signal generation circuit 601 can obtain signals from a processor (e.g., a processor that can generate signals from the input voltage). Figure 1 The processor 170 receives a control signal (e.g., a DC signal) and generates an RF signal with a frequency corresponding to the received control signal.

[0185] According to one embodiment, the aerosol generating device 1 can store control signals corresponding to a first heating frequency band, a second heating frequency band, and a third heating frequency band respectively in the form of a lookup table. According to another embodiment, the aerosol generating device 1 can calculate the control signals corresponding to the first heating frequency band, the second heating frequency band, and the third heating frequency band in real time through at least one calculation. The processor of the aerosol generating device 1 can apply the control signal corresponding to the first heating frequency band, the second heating frequency band, or the third heating frequency band to the signal generation circuit 601. The signal generation circuit 601 can generate a heating signal corresponding to the heating frequency band (e.g., the first heating frequency band, the second heating frequency band, or the third heating frequency band) corresponding to the control signal issued by the processor.

[0186] According to one embodiment, the aerosol generating device 1 can control the connection between the signal generating circuit 601 and the antennas 61, 62, and 63 of the radiating section 60 via a control switching circuit 602. For example, the switching circuit 602 may include a first switching element between the signal generating circuit 601 and the first antenna 61, a second switching element between the signal generating circuit 601 and the second antenna 62, and a third switching element between the signal generating circuit 601 and the third antenna 63. The processor of the aerosol generating device 1 can be electrically connected to the first, second, and third switching elements, and control the connection between the signal generating circuit 601 and the antennas 61, 62, and 63 by controlling the switching states of the first, second, and third switching elements.

[0187] For example, the processor of the aerosol generating device 1 can turn on a first switching element to connect the signal generating circuit 601 to the first antenna 61; turn on a second switching element to connect the signal generating circuit 601 to the second antenna 62; and / or turn on a third switching element to connect the signal generating circuit 601 to the third antenna 63. Turning on a switching element means controlling the switching state of the switching element, switching it from an "off state" to a "closed state". Furthermore, the connection of the signal generating circuit 601 to the first antenna 61, the second antenna 62, and / or the third antenna 63 can refer to supplying heating signals (e.g., a first heating signal, a second heating signal, and / or a third heating signal) from the signal generating circuit 601 to the first antenna 61, the second antenna 62, and / or the third antenna 63.

[0188] For example, the processor of the aerosol generating device 1 can disconnect the first switching element to disconnect the signal generating circuit 601 from the first antenna 61; disconnect the second switching element to disconnect the signal generating circuit 601 from the second antenna 62; and / or disconnect the third switching element to disconnect the signal generating circuit 601 from the third antenna 63. Disconnecting the switching element can refer to controlling the switching element to switch its switching state from a "closed state" to an "open state". Furthermore, if the signal generating circuit 601 is not connected to the first antenna 61, the second antenna 62, and / or the third antenna 63, it can refer to the heating signals (e.g., the first heating signal, the second heating signal, and / or the third heating signal) from the signal generating circuit 601 to the first antenna 61, the second antenna 62, and / or the third antenna 63 being cut off.

[0189] According to one embodiment, the signal generation circuit 601 may include multiple circuits that generate signals in different frequency bands. For example, the signal generation circuit 601 may include multiple circuits corresponding to the antennas 61, 62, and 63 of the radiating section 60 (e.g., a first circuit corresponding to the first antenna 61, a second circuit corresponding to the second antenna 62, and a third circuit corresponding to the third antenna 63).

[0190] The aerosol generating device 1 can control the connection between multiple circuits (e.g., a first circuit, a second circuit, and a third circuit) of the signal generating circuit 601 and the antennas 61, 62, and 63 of the radiating section 60 by controlling the switching circuit 602. According to one embodiment, the switching circuit 602 may include a first switching element between the first circuit and the first antenna 61, a second switching element between the second circuit and the second antenna 62, and a third switching element between the third circuit and the third antenna 63. The processor of the aerosol generating device 1 is electrically connected to the first, second, and third switching elements, and can control the connection between the multiple circuits (e.g., the first, second, and third circuits) and the antennas 61, 62, and 63 by controlling the switching states of the first, second, and third switching elements.

[0191] According to one embodiment, with Figure 6a Unlike the diagram, the signal generation circuit 601 can be connected between the switching circuit 602 and the radiating section 60. For example, the switching circuit 602 can be connected to a power supply (e.g., a power source). Figure 1 Between the power supply 130 and the signal generation circuit 601.

[0192] The aerosol generating device 1 can control the connection between the power supply and multiple circuits (e.g., a first circuit, a second circuit, and a third circuit) of the signal generating circuit 601 via a control switching circuit 602. For example, the switching circuit 602 may include a first switching element between the power supply and the first antenna 61, a second switching element between the power supply and the second antenna 62, and a third switching element between the power supply and the third antenna 63. The processor of the aerosol generating device 1 can be electrically connected to the first, second, and third switching elements and control the connection between the power supply and antennas 61, 62, and 63 by controlling the switching states of the first, second, and third switching elements.

[0193] For example, the processor of the aerosol generating device 1 can turn on a first switching element to connect the power supply to the first antenna 61; turn on a second switching element to connect the power supply to the second antenna 62; and / or turn on a third switching element to connect the power supply to the third antenna 63. Connecting the power supply to the first antenna 61, the second antenna 62, and / or the third antenna 63 means supplying power to the first antenna 61, the second antenna 62, and / or the third antenna 63.

[0194] For example, the processor of the aerosol generating device 1 can disconnect the first switching element to disconnect the power supply from the first antenna 61; disconnect the second switching element to disconnect the power supply from the second antenna 62; and / or disconnect the third switching element to disconnect the power supply from the third antenna 63. Disconnection of the power supply from the first antenna 61, the second antenna 62, and / or the third antenna 63 means cutting off the power supply to the first antenna 61, the second antenna 62, and / or the third antenna 63.

[0195] Figure 6b This is a flowchart of a control method for an aerosol generating apparatus including multiple antennas according to an embodiment.

[0196] Step 610 can be performed by an aerosol generating device (e.g.: Figure 1 and Figure 6a The aerosol generating device 1) in the process is executed. The aerosol generating device may include a signal generation circuit (e.g., Figure 1 RF signal generation circuit 210 or Figure 6a Signal generation circuit 601), resonator (e.g.: Figure 2 Resonator 351), coupler (e.g.: Figure 2 The microwave coupler 332) and the processor (e.g.: Figure 1 The processor 170).

[0197] According to one embodiment, Figure 3 Step 310 may include step 610.

[0198] In step 610, the aerosol generating device can control the signal generating circuit to generate a target heating signal corresponding to the type of aerosol generating article inserted into the aerosol generating device in the target heating frequency band.

[0199] According to one embodiment, the aerosol generating apparatus can store heating curves corresponding to each of a variety of aerosol-generating articles. The heating curves may include the heating frequency band of a heating signal generated by a signal generation circuit. For example, the aerosol generating apparatus can store heating curves corresponding to each of the various types of aerosol-generating articles in the form of a lookup table. (Refer to the above.) Figure 4 The aerosol generating device can determine the type of aerosol-generating article inserted into it. The device can then determine, based on a lookup table, a target heating curve (e.g., a target heating frequency band) corresponding to the determined type of aerosol-generating article. Based on this target heating curve, the device can control the signal generation circuit. In other words, the device can control the signal generation circuit to generate a target heating signal within the target heating frequency band.

[0200] According to one embodiment, referencing Figure 3 This explains that the radiating element can radiate a first signal of a first frequency band and a second signal of a second frequency band into at least a portion of the insertion space according to a predetermined period using a first antenna that functions as a single antenna. (Refer to the above.) Figure 6a According to the description, the aerosol generating device may also include one or more antennas (e.g., second antenna 62 and third antenna 63) in a frequency band (or a different heating frequency band) than the first frequency band (or first heating frequency band) of the first signal (or first heating signal).

[0201] The aerosol generating device can control a switching circuit to radiate a target heating signal through a first antenna or one or more antennas that correspond to the target heating frequency band.

[0202] For example, an aerosol generating device can be controlled by a switching circuit (e.g. Figure 6a The switching circuit 602 controls the connection between the signal generating circuit and the antennas (e.g., first antenna 61, second antenna 62, and / or third antenna 63) of the radiating part (e.g., radiating part 60 in FIG. 6). Alternatively, the aerosol generating device can control the connection between multiple circuits (e.g., first circuit, second circuit, third circuit) of the signal generating circuit and the antennas of the radiating part by controlling the switching circuit. Furthermore, the aerosol generating device can control the connection between the power supply and multiple circuits (e.g., first circuit, second circuit, third circuit) of the signal generating circuit.

[0203] The embodiments of this disclosure described above, or other embodiments, are not mutually exclusive or distinct from each other. The constituent elements or functions of the embodiments of this disclosure described above, or other embodiments, can be used together or combined with each other.

[0204] For example, this means that component A illustrated in a particular embodiment and / or drawing can be combined with component B illustrated in other embodiments and / or drawings. That is, this means that even if the combination between components is not directly described, they can be combined except where it is stated that combination is impossible.

[0205] The detailed description above should be considered exemplary in all respects and not construed as restrictive. The scope of the invention should be determined by a reasonable interpretation of the claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

Claims

1. A method performed by an aerosol generating device, characterized in that, The aerosol generating device includes: A signal generation circuit that generates a first signal in a first frequency band and a second signal in a second frequency band; A resonant section that causes the first signal to resonate to generate an electric field; A coupler that transmits the first signal to the resonant section; and processor, The method includes the following steps: The signal generation circuit is controlled to generate the first signal and the second signal according to a predetermined period; Obtain the reflected signal corresponding to the second signal; and Based on the reflected signal, capacitance information corresponding to at least a portion of the insertion space of the aerosol-generating article of the aerosol generating device is determined.

2. The method according to claim 1, characterized in that, The aerosol generating device further includes a first antenna for radiating the first signal and the second signal.

3. The method according to claim 1, characterized in that, The aerosol-generating article inserted into the aerosol generating device is heated by the resonance of the first signal in the first frequency band.

4. The method according to claim 1, characterized in that, It also includes the following steps: Based on the capacitance information, it is determined whether the aerosol-generating article is inserted into the aerosol-generating device.

5. The method according to claim 1, characterized in that, It also includes the following steps: Based on the capacitance information, the type of aerosol-generating article inserted into the aerosol generating device is determined.

6. The method according to claim 1, characterized in that, It also includes the following steps: The change in dielectric constant of the aerosol-generated article inserted into the aerosol-generating device is determined based on the capacitance information. as well as Based on the change in dielectric constant, it is determined whether the user should pump out the aerosol generating device.

7. The method according to claim 2, characterized in that, The aerosol generating device further includes one or more antennas having a frequency band different from the first frequency band of the first signal.

8. The method according to claim 7, characterized in that, It also includes the following steps: The signal generation circuit is controlled to generate a target heating signal in a target heating frequency band corresponding to the type of aerosol-generating article inserted into the aerosol generating apparatus, wherein the target heating signal is radiated by a first antenna for radiating the first signal and the second signal, and a target antenna in one or more of the antennas corresponding to the target heating frequency band.

9. The method according to claim 8, characterized in that, It also includes the following steps: The connection between the signal generation circuit and the first antenna and the one or more antennas is controlled by controlling the switching circuit connected to the signal generation circuit.

10. A computer-readable recording medium storing a program for performing the method of claim 1.

11. An aerosol generating device, characterized in that, include: A signal generation circuit that generates a first signal in a first frequency band and a second signal in a second frequency band; A resonant section that causes the first signal to resonate to generate an electric field; A coupler that transmits the first signal to the resonant section; and processor, The processor is configured to: The signal generation circuit is controlled to generate the first signal and the second signal according to a predetermined period; Obtain the reflected signal corresponding to the second signal; and Based on the reflected signal, capacitance information corresponding to at least a portion of the insertion space of the aerosol-generating article of the aerosol generating device is determined.

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