Aerosol generating device, heating control method thereof and storage medium

Abstract

The invention provides an aerosol generating device, a heating control method thereof and a storage medium, and the heating control method comprises the following steps: S1, a control assembly generates a control signal, monitors a circuit signal connected with a heating assembly, and obtains a current signal, a voltage signal and a frequency signal corresponding to the control signal; s2, the control assembly calculates an impedance parameter of the heating assembly and a resonant frequency parameter of the resonant assembly according to the current signal, the voltage signal and the frequency signal; and S3, the control component adjusts the circuit capacitance and / or circuit impedance of the resonance component according to the impedance parameter of the heating component and the resonant frequency parameter of the resonance component. When the aerosol generating product is heated, the DSP module of the control assembly can accurately calculate the impedance parameter of the heating assembly and the resonant frequency parameter of the resonant assembly. Based on the calculation data, the device can intelligently adjust the circuit parameters of the resonant component, so that the automatic matching of the resonant frequency and the impedance is realized.

Description

Technical Field

[0001] This application belongs to the field of heating control of heating smoking devices, and particularly relates to an aerosol generating device, a heating control method for an aerosol generating device, and a computer-readable storage medium. Background Art

[0002] In traditional aerosol generating devices, the matching of the resonant circuit frequency and impedance has long relied on manual and repeated adjustment. This method not only consumes a large amount of time and energy, but also due to the limitations of manual operation, it is difficult to achieve an accurate matching effect.

[0003] With the continuous development of technology, automatic matching technology has become a research hotspot. However, most existing automatic matching schemes rely on complex mechanical structures or high-cost electronic components, and there is still a large room for improvement in terms of matching accuracy and response speed.

[0004] Especially during the heating process of aerosol generating articles, the heating of the generating articles will cause the capacitance value to change dynamically, and then the resonant frequency will shift. Since the traditional manual adjustment mode cannot respond to this change in real time, problems such as increased reflection loss and reduced heating efficiency often occur. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide an aerosol generating device, a heating control method for an aerosol generating device, and a computer-readable storage medium to solve the above problems.

[0006] To solve the above technical problems, this application adopts the following technical solutions:

[0007] In a first aspect, this application provides a heating control method for an aerosol generating device. The aerosol generating device includes: a heating chamber, a power supply, a heating component, a control component, and a resonant component. The heating component is used to heat an aerosol forming matrix accommodated in the heating chamber during operation to generate an aerosol. The control component is used to generate a control signal, and the resonant component controls the power supply to supply electrical energy to the heating component according to the control signal. The heating control method includes: Step S1: The control component generates a control signal and monitors the circuit signal connected to the heating component to obtain a current signal, a voltage signal, and a frequency signal corresponding to the control signal; Step S2: The control component calculates the impedance parameter of the heating component and the resonant frequency parameter of the resonant component according to the current signal, the voltage signal, and the frequency signal; Step S3: The control component adjusts the circuit capacitance and / or circuit impedance of the resonant component according to the impedance parameter of the heating component and the resonant frequency parameter of the resonant component.

[0008] Further, the impedance parameter of the heating component is calculated by the following formula: Wherein, Z is the impedance parameter of the heating component, V is the voltage signal, and I is the current signal.

[0009] Further, step S2 includes: step S20: the control component converts the frequency signal into a frequency digital signal; step S21: the control component performs spectrum analysis processing on the frequency digital signal based on the fast Fourier transform algorithm to obtain the resonance frequency parameter of the resonance component.

[0010] Further, step S3 includes: step S30: the control component controls the frequency of the resonance component to be the resonance frequency parameter of the resonance component; step S31: the control component calculates the reflection loss of the resonance component according to the impedance parameter of the heating component; step S32: the control component determines whether the reflection loss is less than a preset reflection loss threshold: if so, the control component adjusts the capacitance and impedance of the resonance component.

[0011] Further, the reflection loss is calculated by the following formula: Wherein, RL is the reflection loss of the resonance component, Z L is the impedance parameter of the heating component, and Z0 is the circuit impedance parameter.

[0012] Further, the preset reflection loss threshold is 10 dB.

[0013] In a second aspect, the present application provides an aerosol generating device, which includes: a heating chamber, a power supply, a heating component, a control component, and a resonance component. The heating component is used to heat an aerosol forming substrate accommodated in the heating chamber during operation to generate an aerosol. The control component is used to generate a control signal. The resonance component controls the power supply to supply electrical energy to the heating component according to the control signal. The control component includes a control module, a DSP module, and a monitoring module. The control module is used to generate a control signal; the monitoring module is used to monitor the circuit signals of the heating component to obtain the current signal, voltage signal, and frequency signal corresponding to the first control signal; the DSP module is used to calculate the impedance parameter of the heating component and the resonance frequency parameter of the resonance component according to the current signal, voltage signal, and frequency signal; the control module adjusts the circuit capacitance and / or circuit impedance of the resonance component according to the impedance parameter of the heating component and the resonance frequency parameter of the resonance component.

[0014] Further, the monitoring module includes a current sensor, a voltage sensor, and a frequency sensor. The current sensor, voltage sensor, and frequency sensor are respectively connected to the circuit of the heating component. The current sensor is used to monitor the current signal of the circuit; the voltage sensor is used to monitor the voltage signal of the circuit; the frequency sensor is used to monitor the frequency signal of the circuit.

[0015] Further, the resonance component includes an adjustable resonance capacitor and a transformer. The control component adjusts the capacitance value of the adjustable resonance capacitor according to the impedance parameter of the heating component and the resonance frequency parameter of the resonance component, so as to make the adjusted circuit resonance frequency match the resonance frequency of the heating component; the control component adjusts the turn ratio of the transformer according to the impedance parameter of the heating component and the resonance frequency parameter of the resonance component, so as to make the adjusted circuit impedance match the impedance of the heating component.

[0016] In a third aspect, the present application provides a computer-readable storage medium, on which a computer program / instructions are stored. When the computer program / instructions are executed by a processor, the steps of the above heating control method are implemented.

[0017] Among them, the aerosol-generating article is a smoking article, including an aerosol-forming substrate, which generates an aerosol that can be directly inhaled into the user's lungs through the user's mouth by heating.

[0018] Preferably, the aerosol-forming substrate is a solid aerosol-forming substrate. The aerosol-forming substrate may include both solid and liquid components at the same time.

[0019] Preferably, the aerosol-forming substrate includes nicotine. In some preferred embodiments, the aerosol-forming substrate includes tobacco.

[0020] The aerosol-generating device is used to illustrate a device that interacts with the aerosol-forming substrate of the aerosol-generating article to generate an aerosol. Preferably, the aerosol-generating device is a smoking device, which interacts with the aerosol-forming substrate of the aerosol-generating article to generate an aerosol that can be directly inhaled into the user's lungs through the user's mouth. The aerosol-generating device may be a holder for a smoking article.

[0021] The susceptor refers to a material that can convert electromagnetic energy into heat. When located in a fluctuating electromagnetic field, the eddy current induced in the susceptor causes the susceptor to heat up. When the elongated susceptor is positioned in thermal contact with the aerosol-forming substrate, the aerosol-forming substrate is heated by the susceptor.

[0022] The aerosol-generating article is designed to engage with an electrically operated aerosol-generating device including an inductive heating source. The inductive heating source or inductor generates a fluctuating electromagnetic field to heat the susceptor located within the fluctuating electromagnetic field. In use, the aerosol-generating article is engaged with the aerosol-generating device such that the susceptor is located within the fluctuating electromagnetic field generated by the inductor.

[0023] The length dimension of the susceptor is substantially greater than its width dimension or its thickness dimension, for example, greater than twice its width dimension or its thickness dimension. Thus, the susceptor can be described as an elongated susceptor. The susceptor can be arranged generally longitudinally within the aerosol-forming substrate. This means that the length dimension of the elongated susceptor is arranged to be approximately parallel to the longitudinal direction of the aerosol-forming substrate, for example, within plus or minus 10 degrees of the longitudinal direction of the aerosol-forming substrate. In a preferred embodiment, the elongated susceptor can be located at a radially central position within the aerosol-forming substrate and extend along the longitudinal axis of the aerosol-forming substrate.

[0024] The susceptor can be made of any material capable of being inductively heated to a temperature sufficient to cause the aerosol-forming substrate to generate an aerosol. Preferred susceptors include metals or carbon. Preferred susceptors may include ferromagnetic materials such as ferrites, ferromagnetic steels or stainless steels. Suitable susceptors may be aluminum or may include aluminum. Preferred susceptors can be made of 400 series stainless steel, such as grade 410, grade 420 or grade 430 stainless steel. Different materials will consume different amounts of energy when placed in an electromagnetic field with similar frequency and field strength values. Therefore, the parameters of the susceptor, such as material type, length, width and thickness, can be varied within a known electromagnetic field to provide the desired energy consumption.

[0025] The susceptor is arranged in thermal contact with the aerosol-forming substrate. Thus, when the susceptor is heated, the aerosol-forming substrate is heated and an aerosol is formed. In one embodiment, a heating body including the susceptor is inserted into the aerosol-forming substrate, and the aerosol generating device can include a single or multiple elongated heating bodies. In another embodiment, the aerosol-forming substrate can contain the susceptor, alternatively, the aerosol-forming substrate can include multiple susceptors, and the morphology of the susceptor can be elongated, granular, net-shaped, radiation-shaped, tubular, hourglass-shaped, spiral-shaped, etc.

[0026] The inductive coil material should be selected as a material with good conductivity, such as metal, etc.; in addition, in this patent, the inductive coil material should also have good elastic deformation ability, and metals such as spring steel, gold, and silver can be used.

[0027] The movable coil support and the fixed coil support of the inductive coil can be connected to the inductive coil body by means of integral molding, welding, clamping, etc. The displacement of the movable coil support can be achieved by manual, motor drive, etc.

[0028] The aerosol generating device is a portable or handheld aerosol generating device that can be comfortably held between the fingers of a single hand by a user. The shape of the aerosol generating device can be substantially cylindrical. The aerosol generating device can have a length between approximately 70 millimeters and approximately 120 millimeters.

[0029] The power source can be any suitable power source, such as a DC voltage source, like a battery. In one embodiment, the power source is a lithium-ion battery. Alternatively, the power source can be a nickel-metal hydride battery, a nickel-cadmium battery, or a lithium-based battery, such as a lithium cobalt, lithium iron phosphate, lithium titanate, or lithium polymer battery.

[0030] The control element can be a simple switch. Alternatively, the control element can be a circuit and can include one or more microprocessors or microcontrollers.

[0031] The aerosol generating system may include an aerosol generating device and one or more aerosol generating articles, and the aerosol generating device is configured to receive the aerosol generating articles in a corresponding number of heating chambers.

[0032] As can be seen from the above technical solutions, the advantages and positive effects of the heating control method of the aerosol generating device proposed in this application are as follows:

[0033] Compared with the traditional mechanical adjustment means, the structural design adopted in the present invention is more concise, the cost is lower, and it is not inferior in ensuring high matching accuracy and fast response ability. In addition, the present invention also has the functions of real-time monitoring and dynamic adjustment, and can quickly adapt to the changes in the working parameters of the heating component.

[0034] In the aerosol generating device proposed in this application, when heating the aerosol generating article, the DSP module of the control component will accurately calculate the impedance parameter of the heating component and the resonance frequency parameter of the resonance component. Based on these calculated data, the device can intelligently adjust the circuit parameters of the resonance component, so as to realize the automatic matching of the resonance frequency and impedance. This innovative design ensures that the aerosol generating device always maintains the optimal matching state, effectively increases the reflection loss of the device, and significantly improves the heating efficiency of the generating article. Description of the Drawings

[0035] The above content of this application and the following specific embodiments will be better understood when read in conjunction with the drawings. It should be noted that the drawings are only examples of the claimed technical solutions.

[0036] Figure 1 is the structural diagram of the aerosol generating device of this application;

[0037] Figure 2 is the flowchart of the heating control method of this application;

[0038] Figure 3 is the operation schematic diagram of the control component of this application.

[0039] Among them, the reference numerals are explained as follows:

[0040] Aerosol generating device: 10;

[0041] Heating component: 11;

[0042] Power supply: 12;

[0043] Control component: 13;

[0044] Heating chamber: 14;

[0045] Aerosol-forming substrate: 20;

[0046] Control module: 31;

[0047] Monitoring module: 32;

[0048] DSP module: 33;

[0049] Resonant component: 34. Detailed implementation manners

[0050] The detailed features and advantages of the present application are described in detail below in the detailed implementation manners. The content is sufficient for any person skilled in the art to understand the technical content of the present application and implement it accordingly. And based on the specification, claims and drawings disclosed in this specification, those skilled in the art can easily understand the related purposes and advantages of the present application.

[0051] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0052] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0053] To make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the drawings.

[0054] Please refer to Figure 1 , the present application provides a heating control method, which can be applied to the aerosol generating device 10. The aerosol generating device 10 may include: a heating chamber 14, a power supply 12, a heating component 11, a control component 13, and a resonant component 34.

[0055] The heating component 11 is used to heat the aerosol-forming substrate 20 contained in the heating chamber 14 during operation to generate aerosol. The control component 13 is used to generate a control signal, and the resonant component 34 controls the power supply 12 to supply electrical energy to the heating component 11 according to the control signal.

[0056] The heating chamber 14 is the heating space for the aerosol-forming substrate 20, and its internal environment is calculated to ensure that the substrate can be uniformly and efficiently converted into aerosol during the heating process. The power supply 12 module is like the power source of the aerosol generating device 10, continuously supplying electrical energy to the entire system, and its stability and efficiency directly affect the heating effect.

[0057] The heating component 11 is responsible for converting electrical energy into heat energy to heat the aerosol-forming substrate 20. It adopts advanced heating technologies and materials, can accurately control the temperature while quickly raising the temperature, and avoid overheating damage to the substrate, thereby retaining the flavor and taste of the substrate. The heating component 11 can be an internal heating component 11, an external heating component 11, or a heating component 11 combining internal and external heating. This application is not limited thereto.

[0058] Internal heating means that the heating element is at least partially positioned inside the aerosol generating article to directly heat the aerosol-forming substrate. The internal heating method is achieved by designing a specific heating tube or heating element. For example, a heating cavity is formed inside the heating tube to accommodate the aerosol-forming substrate, and a heating layer is provided on the outside or inside of the heating tube, generating heat through electricity to heat the substrate. Additionally, auxiliary structures such as a heat dissipation layer and a dielectric layer can be added as needed to improve the heating uniformity and efficiency. Since the heating element is in closer contact with the substrate, the required heating temperature can be reached more quickly. The internal heating method can directly heat the aerosol-forming substrate and improve the heating efficiency.

[0059] External heating means that the heating element is positioned outside the aerosol generating article and heats the substrate through heat conduction or radiation, etc. External heating usually involves designing a specific heating cavity or tubular body to accommodate the aerosol generating article. The heating element (such as a heating element, a planar spiral coil, etc.) is provided on the outside of the heating cavity or tubular body. The external heating method also combines structures such as a heat insulation tube and a support frame to improve the heating uniformity and stability. The external heating method can avoid direct contact between the heating element and the aerosol-forming substrate, reducing the contamination and damage of the substrate to the heating element. By reasonably designing the heating cavity and heat insulation structure, uniform heating of the substrate can be achieved, improving the quality of aerosol generation.

[0060] The control component 13 is the intelligent control center of the entire aerosol generating device 10. It can adjust the heating operating parameters of the aerosol generating device 10, such as the target temperature, heating time, etc., by generating, and regulate the amount of electrical energy delivered by the power supply 12 to the heating component 11, so as to achieve precise temperature control.

[0061] A computer-readable storage medium provided by an embodiment of the present application, on which computer-readable instructions are stored, and when the program is executed by a processor, it implements the steps in the heating control method.

[0062] The memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache.

[0063] The control component 13 includes a computer-readable storage medium, and the control component 13 can execute the steps of the following heating control method through the computer-readable storage medium.

[0064] The resonance component 34 functions to transmit and resonate microwaves to ensure that the microwaves can act on the aerosol generation matrix efficiently and uniformly, so that it is heated and atomized.

[0065] Please refer to Figure 2 and Figure 3 , the control component 13 includes a control module 31, a DSP module 33, and a monitoring module 32, and the resonance component 34 includes an adjustable resonance capacitor and a transformer.

[0066] The heating control method of the aerosol generating device 10 may specifically include the following steps:

[0067] Step S1: The control component generates a control signal and monitors the circuit signal connected to the heating component to obtain a current signal, a voltage signal, and a frequency signal corresponding to the control signal.

[0068] Specifically, the control module 31 generates an initial control signal to the resonant component 34. At the same time, the control module 31 issues a monitoring instruction to the monitoring module 32. The monitoring module 32 is arranged around the heating component 11, and the monitoring module 32 monitors the circuit signals connected to the heating component 11 according to the monitoring instruction issued by the control module 31. Among them, the circuit signals are the current signal, voltage signal, and frequency signal connected to the heating component 11 under the control of the initial control signal.

[0069] The monitoring module 32 includes a current sensor, a voltage sensor, and a frequency sensor. Among them, the current sensor, voltage sensor, and frequency sensor are respectively connected to the circuit of the heating component 11.

[0070] The current sensor is used to monitor the current signal of the circuit, the voltage sensor is used to monitor the voltage signal of the circuit, and the frequency sensor is used to monitor the frequency signal of the circuit.

[0071] Step S2: The control component calculates the impedance parameter of the heating component and the resonant frequency parameter of the resonant component according to the current signal, voltage signal, and frequency signal.

[0072] The DSP module 33 may include an ADC (Analog-to-Digital Converter) element and a DSP (Digital Signal Processing) chip.

[0073] Specifically, the ADC element of the DSP module 33 converts the collected current signal, voltage signal, and frequency signal from analog signals into digital signals, and inputs the current digital signal, voltage digital signal, and frequency digital signal into the DSP chip of the DSP module 33. The DSP chip performs arithmetic processing to calculate the current impedance parameter of the heating component and the resonant frequency parameter of the resonant component.

[0074] Exemplarily, the DSP chip can calculate the impedance parameter of the heating component through the following formula (1):

[0075]

[0076] Among them, Z is the impedance parameter of the heating component, V is the voltage digital signal, and I is the current digital signal.

[0077] The resonant frequency parameter of the resonant component includes the resonant frequency of the resonant component, and the resonant frequency of the resonant component can be obtained by the DSP chip through spectrum analysis processing according to the FFT (Fast Fourier Transform) algorithm.

[0078] Specifically, the DSP chip will perform spectral analysis on the frequency digital signal, convert the time-domain signal into a frequency-domain signal, so as to reveal the frequency components and their amplitudes contained in the frequency digital signal. In the spectral analysis result, find the frequency component with the largest amplitude, and this frequency is the resonance frequency.

[0079] It can be understood that since the resonance phenomenon will cause energy concentration at a specific frequency, the resonance frequency usually appears as an obvious peak in the spectrum.

[0080] Step S3: The control component adjusts the circuit capacitance and / or circuit impedance of the resonance component according to the impedance parameter of the heating component and the resonance frequency parameter of the resonance component.

[0081] Specifically, step S3 may include:

[0082] Step S30: The control component controls the frequency of the resonance component to be the resonance frequency parameter of the resonance component.

[0083] It can be understood that under the control of the initial control signal, the frequency of the resonance component 34 is the resonance frequency parameter of the resonance component.

[0084] In addition, when calculating the reflection loss, it is necessary to ensure that the measured impedance is obtained at the resonance frequency. Because at the resonance frequency, the impedance characteristics of the circuit are the most significant, and the calculation result of the reflection loss is also the most accurate.

[0085] Step S31: The control component calculates the reflection loss of the resonance component according to the impedance parameter of the heating component.

[0086] The DSP module 33 calculates the reflection loss of the resonance component 34 under the initial control signal according to the following formula (2):

[0087]

[0088] Wherein, RL is the reflection loss of the resonance component, Z L is the impedance parameter of the heating component, and Z0 is the circuit impedance parameter.

[0089] It should be noted that the circuit impedance parameter is pre-determined according to the material of the connecting wires used for each component in the aerosol generating device 10.

[0090] It can be understood that in radio frequency and microwave communications, the circuit impedance parameter usually uses 50Ω or 75Ω as the standard impedance. In an audio system, the circuit impedance parameter usually uses 600Ω or 100Ω as the standard impedance.

[0091] Exemplarily, the circuit impedance parameter of the aerosol generating device 10 in the present application can be set to 50Ω, assuming the following parameters: the effective value of voltage V rms= 1.0 V; Root-mean-square current I rms = 0.5 A; Circuit impedance Z_system = 50 Ω.

[0092] The calculation result is: Impedance parameter Z of the heating component L = 2 Ω, Reflection loss RL of the resonant component = 0.7 dB.

[0093] Step S32: The control component determines whether the reflection loss is less than a preset reflection loss threshold: If so, the control component adjusts the capacitance and impedance of the resonant component.

[0094] It can be understood that according to formula (2), the larger the reflection loss, the smaller the generated reflection signal, the better the impedance matching between the resonant component 34 and the heating component 11, and the higher the energy transfer efficiency.

[0095] Ideally, when the impedance parameters of the heating component and the circuit impedance parameters are the same, the reflection loss of the resonant component 34 is infinite (theoretically no reflection), which means that in the current control signal, the resonant component 34 and the heating component 11 are perfectly matched, no reflection signal is generated, the energy transfer efficiency of the heating component 11 is the highest, and the heating effect on the aerosol formation matrix 20 is also the best.

[0096] Preferably, the preset reflection loss threshold of the present application can be set to 10 dB.

[0097] When the reflection loss ≥ 10 dB, it can be considered that the current impedance matching between the resonant component 34 and the heating component 11 is good and no adjustment is required.

[0098] When the reflection loss < 10 dB, it can be considered that the current impedance matching between the resonant component 34 and the heating component 11 is not good and adjustment is required.

[0099] Specifically, when the reflection loss < 10 dB, the control module 31 adjusts the working parameters of the adjustable resonant capacitance and / or the transformer of the resonant component 34 according to the feedback signal of the DSP module 33 to achieve the impedance matching between the resonant component 34 and the heating component 11 and increase the reflection loss.

[0100] In the first embodiment, the resonant capacitance is adjusted:

[0101] The control module 31 adjusts the initial control signal according to the feedback signal of the DSP module 33. After adjustment, the control module 31 outputs a second control signal to change the capacitance value of the adjustable resonant capacitance in the resonant component 34.

[0102] The capacitance value of the adjustable resonant capacitance can be finely adjusted by means of mechanical structures such as a stepper motor and a piezoelectric ceramic. The specific adjustment mechanism is as follows:

[0103] 1. Precise Regulation of Stepper Motor

[0104] After receiving a specific drive signal, the stepper motor rotates with an accurate step angle. Its rotating shaft is rigidly connected to the moving plate of the adjustable capacitor. When the motor rotates, the moving plate generates a linear displacement accordingly. This displacement directly changes the relative position between the capacitor plates, causing the effective covering area of the plates or the plate spacing to change correspondingly, thereby achieving precise adjustment of the capacitance value to meet the working requirements of different resonant circuits.

[0105] 2. Micro-variation Regulation of Piezoelectric Ceramics

[0106] Piezoelectric ceramics have unique electrostrictive deformation characteristics. When a specific voltage is applied across them, extremely small mechanical deformations occur. In the design of the adjustable resonant capacitor, the piezoelectric ceramics are ingeniously integrated with the capacitor plate structure. By precisely controlling the voltage amplitude and polarity applied to the piezoelectric ceramics, controllable expansion or bending deformations can be generated. This deformation subtly changes the spacing between the capacitor plates or the effective acting area of the plates, thereby achieving fine adjustment of the capacitance value and providing highly adjustable capacitance parameters for the resonant circuit.

[0107] Its adjustment logic is as follows: When the monitored reflection loss is less than 10 dB, it indicates that there is a deviation between the resonant frequency of the current circuit and the resonant frequency of the heating component 11, and the two do not reach a matching state. At this time, the DSP chip will intervene and work. By adjusting the capacitance value, the resonant frequency of the circuit is gradually made to approach the resonant frequency of the heating component 11, thereby achieving more precise resonant matching.

[0108] In the second embodiment, adjust the turns ratio of the matching transformer:

[0109] The control module 31 adjusts the initial control signal according to the feedback signal of the DSP module 33. After adjustment, the control module 31 outputs a third control signal for adjusting the turns ratio of the matching transformer. It is worth mentioning that the turns ratio of the matching transformer can be flexibly adjusted through an electronic switch or a relay.

[0110] The turns ratio of the matching transformer can be flexibly adjusted with the help of an electronic switch or a relay. Specifically, its adjustment methods are mainly reflected in the following two ways:

[0111] One is the action mode of the electronic switch. In this mode, the electronic switch accurately switches different taps of the transformer according to the received drive signal. Through this operation, the turns ratio of the transformer is changed accordingly to meet the requirements of different circuits.

[0112] The second is the operation mode of the relay. The relay also switches the taps of the transformer according to the drive signal. When the drive signal issues an instruction, the relay responds quickly to complete the tap switching operation, thereby adjusting the turn ratio of the transformer.

[0113] The adjustment logic of this embodiment is as follows: If the detected reflection loss is less than 10 dB, it means that the impedance matching of the current circuit is not ideal. In this case, the DSP chip will play a role. By adjusting the turn ratio of the transformer, the impedance of the circuit is matched with the impedance of the heating component 11, thereby improving the performance and stability of the entire system.

[0114] It should be particularly noted that in the actual application process, the embodiment has a high degree of flexibility. One can choose to adopt only the first method of adjusting the resonant capacitor, or choose to use only the second method of matching the turn ratio of the transformer. Of course, one can also combine the first method of adjusting the resonant capacitor with the second method of matching the turn ratio of the transformer for implementation. This application is not limited to the above-listed implementation combinations, and the implementer can make flexible selections and combinations according to actual needs.

[0115] It should be understood that the term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Here, A and B can be singular or plural. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after, but it may also represent an "and / or" relationship, which can be specifically understood with reference to the context before and after.

[0116] In this application, "at least one" means one or more, and "a plurality" means two or more. "At least one of the following items" or its similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, a - b, a - c, b - c, or a - b - c, where a, b, and c can be single or multiple.

[0117] It should be understood that in various embodiments of this application, the magnitudes of the serial numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of this application.

[0118] The terms and expressions used herein are for descriptive purposes only, and the present application should not be limited to these terms and expressions. The use of these terms and expressions does not mean excluding any equivalent features of any illustration and description (or parts thereof), and it should be recognized that various modifications that may exist should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be regarded as covering all such equivalents.

[0119] Similarly, it should be noted that although the present application has been described with reference to the current specific embodiments, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present invention. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A heating control method for an aerosol generating device, the aerosol generating device comprising: A heating chamber, a power supply, a heating component, a control component, and a resonance component. The heating component is used to heat an aerosol-forming substrate contained in the heating chamber during operation to generate an aerosol. The control component is used to generate a control signal, and the resonance component controls the power supply to supply electrical energy to the heating component according to the control signal. It is characterized in that the heating control method includes: Step S1: The control component generates the control signal and monitors the circuit signal connected to the heating component to obtain the current signal, voltage signal, and frequency signal corresponding to the control signal; Step S2: The control component calculates the impedance parameter of the heating component and the resonance frequency parameter of the resonance component according to the current signal, the voltage signal, and the frequency signal; Step S3: The control component adjusts the circuit capacitance and / or circuit impedance of the resonance component according to the impedance parameter of the heating component and the resonance frequency parameter of the resonance component.

2. The heating control method according to claim 1, wherein The impedance parameter of the heating component is calculated by the following formula: Where Z is the impedance parameter of the heating component, V is the voltage signal, and I is the current signal.

3. The heating control method according to claim 1, wherein The step S2 includes: Step S20: The control component converts the frequency signal into a frequency digital signal; Step S21: The control component performs spectral analysis processing on the frequency digital signal based on the fast Fourier transform algorithm to obtain the resonance frequency parameter of the resonance component.

4. The heating control method according to claim 1, wherein The step S3 includes: Step S30: The control component controls the frequency of the resonance component to be the resonance frequency parameter of the resonance component; Step S31: The control component calculates the reflection loss of the resonance component according to the impedance parameter of the heating component; Step S32: The control component determines whether the reflection loss is less than a preset reflection loss threshold: if so, the control component adjusts the circuit capacitance and / or the circuit impedance of the resonance component.

5. The heating control method according to claim 4, wherein The reflection loss is calculated by the following formula: Wherein, RL is the reflection loss of the resonant component, Z L is the impedance parameter of the heating component, and Z0 is the impedance parameter of the circuit.

6. The heating control method according to claim 4, wherein The preset reflection loss threshold is 10 dB.

7. An aerosol generating device, the aerosol generating device comprising: A heating chamber, a power supply, a heating component, a control component, and a resonance component. The heating component is used to heat an aerosol-forming substrate contained in the heating chamber during operation to generate an aerosol. The control component is used to generate a control signal, and the resonance component controls the power supply to supply electrical energy to the heating component according to the control signal. It is characterized in that the control component includes a control module, a DSP module, and a monitoring module. The control module is used to generate the control signal; The monitoring module is used to monitor the circuit signal of the heating component to obtain the current signal, voltage signal, and frequency signal corresponding to the control signal; The DSP module is used to calculate the impedance parameter of the heating component and the resonance frequency parameter of the resonance component according to the current signal, the voltage signal, and the frequency signal; The control module adjusts the circuit capacitance and / or circuit impedance of the resonance component according to the impedance parameter of the heating component and the resonance frequency parameter of the resonance component.

8. The aerosol generating device according to claim 7, characterized in that, The monitoring module includes a current sensor, a voltage sensor, and a frequency sensor. The current sensor, the voltage sensor, and the frequency sensor are respectively connected to the circuit of the heating component. The current sensor is used to monitor the current signal of the circuit. The voltage sensor is used to monitor the voltage signal of the circuit. The frequency sensor is used to monitor the frequency signal of the circuit.

9. The aerosol generating device according to claim 7, wherein The resonance component includes an adjustable resonance capacitor and a transformer. The control component adjusts the capacitance value of the adjustable resonance capacitor according to the impedance parameter of the heating component and the resonance frequency parameter of the resonance component, so as to make the adjusted circuit resonance frequency match the heating component resonance frequency. The control component adjusts the turn ratio of the transformer according to the impedance parameter of the heating component and the resonance frequency parameter of the resonance component, so as to make the adjusted circuit impedance match the heating component impedance.

10. A computer-readable storage medium having a computer program / instruction stored thereon, characterized in that, When the computer program / instructions are executed by the processor, the steps of the heating control method according to any one of claims 1-6 are implemented.

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