Control method of aerosol generating equipment, aerosol generating equipment and system

Abstract

The invention relates to the technical field of aerosol generation equipment, and provides a control method of aerosol generation equipment, a control device of the aerosol generation equipment, the aerosol generation equipment and an aerosol generation system. According to the control method of the aerosol generation equipment, in the process that the aerosol generation equipment works according to a first driving signal and an aerosol generation assembly is heated, the working current of the aerosol generation equipment is sampled, and a real-time current value is obtained. The change amplitude of the real-time current value can represent the temperature change amplitude when the aerosol generating device heats the aerosol generating assembly, so that the number of times of smoking of the aerosol generating assembly can be counted according to the change amplitude of the real-time current value, and then the total number of smoked times is obtained. When the total smoking number is not smaller than the preset threshold value, work according to the first driving signal is stopped, the intelligent degree of the aerosol generation equipment can be improved, and the experience of a user in using the aerosol generation equipment and the aerosol generation assembly is improved.

Description

Technical Field

[0001] This application belongs to the technical field of aerosol generating devices, and particularly relates to a control method for an aerosol generating device, a control device for an aerosol generating device, an aerosol generating device, and an aerosol generating system. Background Art

[0002] An aerosol generating device can be used with an aerosol generating component, heating the aerosol generating component, and then atomizing the substance in the aerosol generating component. In actual use, since the aerosol generating substance configured in the aerosol generating component is limited, that is, the number of times available for the user to inhale is limited. If the aerosol generating component is still heated when the substance in the aerosol generating component is exhausted, it is likely to affect the user's experience of using the aerosol generating device and the aerosol generating component. Summary of the Invention

[0003] The purpose of this application is to provide a control method for an aerosol generating device, a control device for an aerosol generating device, an aerosol generating device, and an aerosol generating system, aiming to provide a new solution that can improve the user's experience of using the aerosol generating device and the aerosol generating component.

[0004] The first aspect of the embodiments of this application provides a control method for an aerosol generating device. The aerosol generating device is used to carry an aerosol generating component, and the control method includes:

[0005] Operating according to a first driving signal, heating the aerosol generating component, and sampling the operating current of the aerosol generating device to obtain a real-time current value;

[0006] Counting the number of inhalations of the aerosol generating component according to the change amplitude of the real-time current value to obtain the total number of inhalations;

[0007] When the total number of inhalations is not less than a preset threshold, stop operating according to the first driving signal.

[0008] The second aspect of the embodiments of this application provides a control device for an aerosol generating device. The aerosol generating device is used to carry an aerosol generating component, and the control device includes:

[0009] A detection unit for operating according to a first driving signal, heating the aerosol generating component, and sampling the operating current of the aerosol generating device to obtain a real-time current value;

[0010] A counting unit for counting the number of inhalations of the aerosol generating component according to the change amplitude of the real-time current value to obtain the total number of inhalations;

[0011] The first execution unit is configured to stop operating according to the first driving signal when the total number of puffs is not less than a preset threshold.

[0012] In a third aspect of the embodiments of the present application, an aerosol generating device is provided, including: a memory, a processor, and a computer program stored in the memory and executable on the aerosol generating device. When the processor executes the computer program, the steps of the control method of the aerosol generating device provided in the first aspect as described above are implemented.

[0013] In a fourth aspect of the embodiments of the present application, an aerosol generation system is provided, including an aerosol generation component, and further including the aerosol generating device provided in the third aspect as described above.

[0014] In a fifth aspect of the embodiments of the present application, a computer storage medium is provided. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the steps of the control method of the aerosol generating device provided in the first aspect as described above are implemented.

[0015] The beneficial effects of the embodiments of the present invention compared with the prior art are as follows:

[0016] The control method of the aerosol generating device provided above is applied to an aerosol generating device, wherein the aerosol generating device is used to carry an aerosol generation component. The aerosol generating device operates according to the first driving signal, heats the aerosol generation component, and samples the working current of the aerosol generating device to obtain a real-time current value. Since the change range of the real-time current value can represent the change range of the temperature when the aerosol generating device heats the aerosol generation component, the number of puffs of the aerosol generation component can be counted according to the change range of the real-time current value, and then the total number of puffs can be obtained. Based on this, the total number of puffs and / or the number of available puffs of the aerosol generation component can be accurately detected. In this way, when the total number of puffs is not less than a preset threshold, the operation according to the first driving signal is stopped, so that when the user uses the aerosol generating device and the aerosol generation component, not only can they learn about the depletion of the material of the aerosol generation component, but also they can avoid ineffective heating of the aerosol generation component by stopping operating according to the first driving signal. Thus, the intelligence level of the aerosol generating device is improved, and the user experience of using the aerosol generating device and the aerosol generation component is improved. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the use of the aerosol generating device and the aerosol generation component in the embodiments of the present application;

[0018] Figure 2 It is a schematic diagram of the change curve of the permeability of the receptor of the aerosol generation component and the temperature in the embodiments of the present application;

[0019] Figure 3 It is a schematic diagram of the variation relationship between the working current and time of the aerosol generating device in the embodiment of the present application;

[0020] Figure 4 It is a flowchart of the implementation of a control method for an aerosol generating device provided in an embodiment of the present application;

[0021] Figure 5 It is a flowchart of the implementation of a control method for an aerosol generating device provided in another embodiment of the present application;

[0022] Figure 6 It is a schematic diagram of the change of the real-time current value of the aerosol generating device in the embodiment of the present application;

[0023] Figure 7 It is a schematic structural diagram of a control device for an aerosol generating device provided in an embodiment of the present application;

[0024] Figure 8 It is a schematic structural diagram of an aerosol generating device provided in an embodiment of the present application. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clear and understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] It should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0027] Exemplarily, the aerosol generating device can be used with an aerosol generating component, heat the aerosol generating component, and then atomize the substance in the aerosol generating component. In related technical solutions, the ways of heating the aerosol generating component by the aerosol generating device are divided into a resistive heating method and an electromagnetic heating method.

[0028] For example, in the resistive heating method, the heating component provided in the aerosol generating device is a resistive heating component, that is, the heating component directly converts electrical energy into heat energy in response to a control signal to heat the aerosol generating component carried on the aerosol generating device.

[0029] For another example, the electromagnetic heating method is to install a magnetic eddy current heating component in the aerosol generating device. When the aerosol generating component is installed in the aerosol generating device, a control signal is output to make the magnetic eddy current heating component act on the sensor in the aerosol generating component, so as to heat the aerosol generating component.

[0030] However, in actual use, since the amount of aerosol generating substance configured in the aerosol generating component is limited, that is, the number of times available for the user to puff is limited. If the aerosol generating component is still heated when the substance in the aerosol generating component is exhausted, it is likely to affect the user experience of using the aerosol generating device and the aerosol generating component.

[0031] To solve the above technical problems, this embodiment provides a control method for an aerosol generating device, which is applied to the aerosol generating device. The aerosol generating device is used to install the aerosol generating component. The aerosol generating device operates according to the first driving signal, heats the aerosol generating component, and samples the working current of the aerosol generating device to obtain the real-time current value. Since the change range of the real-time current value can represent the change range of the temperature when the aerosol generating device heats the aerosol generating component, the number of puffs of the aerosol generating component can be counted according to the change range of the real-time current value, and then the total number of puffs already made can be obtained. Based on this, the total number of puffs already made and / or the number of available puffs of the aerosol generating component can be accurately detected. In this way, when the total number of puffs already made is not less than the preset threshold, stop operating according to the first driving signal, so that the user can not only know the depletion situation of the material in the aerosol generating component when using the aerosol generating device and the aerosol generating component, but also avoid ineffective heating of the aerosol generating component by stopping operating according to the first driving signal. Thus, the intelligence level of the aerosol generating device is improved, and the user experience of using the aerosol generating device and the aerosol generating component is improved.

[0032] The control method for an aerosol generating device provided in this embodiment has the aerosol generating device as the execution subject. Specifically, it can be the control unit MCU or the processing unit CPU in the aerosol generating device. In actual use, the aerosol generating device or the control unit MCU or the processing unit CPU in the aerosol generating device can implement automatic adaptation of the heating temperature corresponding to the aerosol generating component by executing the control method for the aerosol generating device provided in this embodiment.

[0033] It should be noted that in all embodiments of the present application, the aerosol generating device is used to install the aerosol generating component, and the aerosol generating device includes a heating component. Here, the heating component can be a resistive heating component and / or an electromagnetic heating component, which is not limited herein.

[0034] Figure 1 The schematic diagram of the use of the aerosol generating device and the aerosol generating component in the embodiment of the present application is shown. As Figure 1 shown, the aerosol generating device 10 can be used to carry the aerosol generating component 20. Among them, the aerosol generating device 10 includes a heating component. In a specific implementation, the heating component can be an electrothermal sheet with resistive heating, or a magnetic heating coil, which is not limited here.

[0035] Exemplarily, in Figure 1 the example shown, the heating component may specifically include a coil 11. The heating component may specifically further include a class F radio frequency circuit (not shown in the figure), that is, a class F inverter. By providing a high-frequency control signal to the class F inverter, such as a control signal with a frequency between 1 megahertz and 40 megahertz, a high-frequency alternating electromagnetic field can be provided through the coil 11. When the aerosol generating component 20 is carried in the aerosol generating device 10, the aerosol generating component 20 is equivalent to being surrounded by the coil 11, and the receptor 21 in the aerosol generating component 20 can be regarded as a load, forming an RLC load resonance circuit with the RF circuit. Here, the receptor 21 generates eddy current heat in the high-frequency alternating electromagnetic field environment provided by the coil 11, causing the overall temperature of the aerosol generating component 20 to rise. In the case where the aerosol generating component 20 and the aerosol generating device 10 are mutually adapted, the aerosol generating device 10 can control the magnetic field strength of the coil 11 to make the receptor 21 in the aerosol generating component 20 continuously generate heat as a load, so as to reach a temperature at which the aerosol generating matrix 22 can be carbonized and the aerosol former can be volatilized.

[0036] As Figure 2 shown, the schematic diagram of the change curve of the relative magnetic permeability of the receptor of the aerosol generating component and the temperature in the embodiment of the present application is shown. Combining Figure 1 with Figure 2 , in use, the receptor 21 generates eddy current heat in the high-frequency alternating electromagnetic field environment provided by the coil 11, and the relative magnetic permeability of the receptor 21 in the aerosol generating component 20 continuously increases as the temperature rises. As Figure 2 shown, when the temperature rises to Tm, the relative magnetic permeability μ of the receptor 21 reaches the peak value, that is, the relative magnetic permeability at point M is μmax. As the temperature further rises, the relative magnetic permeability μ begins to rapidly decrease until it exceeds the Curie temperature point Tc and completely loses magnetism.

[0037] Referring to Figure 3 , Figure 3 shown, the schematic diagram of the change relationship between the working current and time of the aerosol generating device in the embodiment of the present application is shown. Combining Figures 1 to 3, the aerosol generating device 10 equipped with the aerosol generating component 20 can be regarded as a magnetic excitation system. In this magnetic excitation system, as the relative magnetic permeability μ increases, the working current I of the aerosol generating device 10 DC gradually decreases. When the working current of the aerosol generating device 10 drops to the minimum working current value I min , it corresponds to Figure 2 the relative magnetic permeability inversion point M in, that is, when it is detected that the working current of the aerosol generating device 10 drops to the minimum working current value I min , the relative magnetic permeability μ of the sensor 21 is μmax.

[0038] Based on this, the peak characteristic of the relative magnetic permeability μ of the sensor 21 can be used to characterize the temperature change characteristic of the sensor 21, that is, it can be used as the basis for automatically identifying whether the aerosol generating component 20 carried by the aerosol generating device 10 is suitable. Here, in the magnetic excitation system composed of the aerosol generating device 10 equipped with the aerosol generating component 20, the change in the relative magnetic permeability will cause a change in the inductance, and the change in the inductance will affect the resonance frequency, thereby changing the impedance of the power supply circuit of the heating component in the aerosol generating device 10, and finally changing the working current of the aerosol generating device 10. In this way, based on Figure 2 the shown change relationship between the relative magnetic permeability and temperature, and Figure 3 the shown change trend of the working current value, and the minimum working current I min and the corresponding relationship with the maximum relative magnetic permeability μmax, the change process of the working current value can be used as the basis for judging whether the aerosol generating device 10 and the aerosol generating component 20 are suitable. That is, when the aerosol generating device 10 is equipped with the aerosol generating component 20, by detecting the change trend / real-time current value of the working current of the aerosol generating device 10, it can be used to identify whether the aerosol generating component 20 has the relative magnetic permeability peak characteristic or relative magnetic permeability change characteristic suitable for the aerosol generating device 10, and then determine whether the aerosol generating component 20 is the target aerosol generating component suitable for the aerosol generating device 10.

[0039] Combined with Figure 2 and Figure 3, as an example, let the temperature corresponding to the relative permeability inversion point M be Tm, and the optimal temperature of the target aerosol generating component can be Ta / Tb, that is, the target temperature. Here, for the target aerosol generating component, since its corresponding sensor has the relative permeability peak characteristic or relative permeability change characteristic adapted to the aerosol generating device, the temperature Tm corresponding to the permeability inversion point M is a known temperature. Also, because when setting Ta / Tb, Ta / Tb is set as close to Tm as possible, so that the temperature measurement can be more accurate and the consistency of different loads is better. Here, considering the stability requirement of the preset driving strategy, usually a small temperature difference ΔT is added on the basis of the temperature Tm corresponding to the relative permeability inversion point M, and this temperature difference ΔT can be positive or negative. That is Figure 2 in which Tb = Tm + ΔT or Ta = Tm - ΔT, because the relative permeability is equal at temperature Ta and temperature Tb. Based on this, both Ta and Tb can be regarded as known temperatures. Taking the optimal temperature being Tb as an example, the optimal temperature Tb is set to a temperature value far from the Curie temperature Tc, because the closer to the Curie temperature point Tc, the weaker the eddy current effect in the sensor and the higher the energy consumption of the induction coil. This situation will cause the induction coil to overheat and its performance to degrade or even burn out, and it is beneficial for the efficient use of electric energy. As a possible implementation method, the difference between the set optimal temperature Tb and the Curie temperature Tc can be 100°C to 150°C. As a possible implementation method, the temperature difference ΔT can be within a constant numerical range. For example, ΔT satisfies 5°C ≤ ΔT ≤ 30°C. For another example, ΔT satisfies 6°C ≤ ΔT ≤ 15°C. As a possible implementation method, the temperature difference ΔT can be a dynamic value based on a certain proportionality coefficient α of the temperature Tm corresponding to the relative permeability inversion point M, that is, ΔT = αTm, and α is a constant value preset by the program. For example, α ∈ [0.01, 0.1]. For another example, α ∈ [0.02, 0.05].

[0040] It is easy to understand that, combined with Figure 2 and Figure 3 the example of, in the magnetic excitation system composed of the aerosol generating device and the aerosol generating component, as the relative permeability μ increases, the working current I of the aerosol generating device 10 DC gradually decreases. When the working current of the aerosol generating device 10 drops to the minimum working current value I min , it corresponds to Figure 2 the relative permeability inversion point M in, that is, when it is detected that the working current of the aerosol generating device 10 drops to the minimum working current value I min , the relative permeability μ of the sensor 21 is μmax. That is, taking Figure 2The relative permeability inversion point M is the symmetry point. The first target current of the aerosol generating device 10 can be detected at the optimal temperature Ta, and the second target current of the aerosol generating device 10 can be detected at the optimal temperature Tb. Since the relative permeability at point A corresponding to the temperature Ta is equal to the relative permeability at point B corresponding to the temperature Tb, based on this, it can be determined that the impedance of the power supply circuit of the heating component in the aerosol generating device 10 is equal at the temperature Ta and at the temperature Tb. Therefore, the first target current is equal to the second target current. In this way, during the preheating of the aerosol generating component, the real-time current value of the aerosol generating device can be detected. When it is determined that the real-time current value appears twice as the target working current value, it indicates that the aerosol generating component currently carried by the aerosol generating device is adapted to it, and then it can work according to the first driving signal to heat the aerosol generating component.

[0041] The following only takes the control unit MCU in the aerosol generating device as the execution subject as an example, and details a control method for an aerosol generating device provided in this embodiment through a specific implementation manner.

[0042] Refer to Figure 4 , Figure 4 shows a flowchart of the implementation of a control method for an aerosol generating device provided in an embodiment of the present application. As Figure 4 shown, a control method for an aerosol generating device provided in an embodiment of the present application includes:

[0043] 110: Work according to the first driving signal to heat the aerosol generating component, and sample the working current of the aerosol generating device to obtain the real-time current value.

[0044] In 110, the first driving signal refers to a signal used to control the aerosol generating device to work at the target working current value. Here, when the aerosol generating device works according to this first driving signal, the aerosol generating component can be heated to the target temperature, so that the substances in the aerosol generating component can be fully atomized at this target temperature.

[0045] In all embodiments of the present application, the real-time current value can be used to characterize the changing trend of the relative permeability of the magnetic excitation system composed of the aerosol generating device and the currently carried aerosol generating component during the heating process. It can be understood that the changing trend of the relative permeability is related to the temperature, so the change amplitude of the real-time current value can also characterize the temperature change amplitude when the aerosol generating device heats the aerosol generating component.

[0046] It is easily understandable that the magnetic excitation system composed of the aerosol generating device and the currently mounted aerosol generating component can be a magnetic excitation system composed of the coil of the heating component in the aerosol generating device and the receptor in the currently mounted aerosol generating component, and / or a magnetic excitation system composed of the detection coil in the aerosol generating device and the receptor in the currently mounted aerosol generating component, which is not limited herein.

[0047] In this embodiment, the real-time current value refers to multiple sets of working current values detected during the heating operation. In a specific implementation, a current detection circuit can be set in the aerosol generating device, and by sampling the working current of the heating component in the aerosol generating device, the real-time current value can be obtained.

[0048] As an embodiment, the first driving signal includes a first pulse width. Step 110 can specifically include: sampling the working current of the aerosol generating device according to the first pulse width to obtain the real-time current value.

[0049] It is easily understandable that since the first driving signal includes a first pulse width, and when detecting the real-time current value of the aerosol generating device, the detection is performed according to the first pulse width included in the first driving signal, the detection timing of the real-time current value of the aerosol device corresponds to the first pulse width included in the first driving signal. That is, during the process of outputting the first driving signal to the heating component, multiple real-time current values of the aerosol generating device can be detected according to the first pulse width included in the first driving signal.

[0050] Exemplarily, in a specific implementation, a corresponding current sampling circuit can be set in the aerosol generating device, and the working current of the heating circuit or the detection circuit where the coil is located is detected through this current sampling circuit, thereby obtaining multiple real-time current values.

[0051] Combined with the above example, when using the current sampling circuit to sample the working current, the preset detection strategy specifically refers to the synchronization relationship between the sampling timing or sampling frequency of the current sampling circuit and the first pulse width triggered by the aerosol generating device. That is, when the aerosol generating device triggers the first pulse width, it instructs the current sampling circuit to perform real-time current sampling, thereby obtaining multiple real-time current values.

[0052] Taking the first driving signal as a PWM signal as an example, in the PWM signal, the high level is used as the first pulse width. Correspondingly, the duration of the high level is the duration of the first pulse width. Based on this, when sampling the working current of the aerosol generating device to obtain the real-time current value, it can specifically be to sample the real-time working current value of the aerosol generating device each time the high level of the PWM signal is triggered to obtain the real-time current value.

[0053] In combination with the above example, as an example, the current sampling circuit can be connected to the control unit MCU of the aerosol generating device, and the MCU receives multiple real-time current values.

[0054] 120: Count the number of puffs of the aerosol generating component according to the change amplitude of the real-time current value to obtain the total number of puffs.

[0055] In 120, the amplitude of the change of the real-time current value refers to the difference between any two adjacent real-time current values ​​in the real-time current value. Here, in the process of the aerosol generating device working according to the first driving signal and heating the aerosol generating component, the working current of the aerosol generating device can be continuously sampled to obtain multiple groups of real-time current values. By comparing the size of any two adjacent real-time current values, that is, the difference between any two adjacent real-time current values, it can be determined based on the size of the difference whether the user has performed a suction action or a sucking action on the aerosol generating device.

[0056] It should be noted that Figure 2 As an example, when the temperature drops to between the temperature Tm and the target temperature Tb, the impedance in the RLC load resonant circuit formed by the aerosol generating device and the aerosol generating component changes, resulting in a change in the real-time current value of the aerosol generating device, which can be specifically changed from the target working current value I b To the minimum operating current value I min Based on this, the change range of the real-time current value can be determined by comparing the magnitudes of any two adjacent real-time current values, and then according to the change range, it can be determined whether the user has performed a suction action or a sucking action on the aerosol generating device.

[0057] In this embodiment, the number of puffs of the aerosol generating assembly is counted according to the change amplitude of the real-time current value. It can be understood that when the change amplitude of the real-time current value can represent that the user has performed a puffing action or a sucking action, the number of puffs of the aerosol generating assembly can be increased by one. In this way, when the aerosol generating device operates according to the first driving signal and heats the aerosol generating assembly, not only the total number of puffs of the currently mounted aerosol generating assembly can be clearly determined.

[0058] In some embodiments, the number of puffs of the aerosol generating assembly is counted according to the amplitude of the change in the real-time current value, and the remaining number of puffs of the aerosol generating assembly can also be determined.

[0059] Exemplarily, in a specific implementation, a preset number of puffs of the aerosol generating component may be stored in the aerosol generating device, and the remaining number of puffs of the aerosol generating component may be obtained by calculating the difference between the preset number of puffs and the total number of puffs.

[0060] 130: When the total number of puffs is not less than a preset threshold, stop operating according to the first driving signal.

[0061] In 130, the preset threshold is used to indicate the preset number of puffs of the currently installed aerosol generating component, that is, the available number of puffs of the currently installed aerosol generating component. Here, the available number of puffs is related to the content of the substance in the aerosol generating component, and this available number of puffs can also be understood as the effective number of puffs of the aerosol generating component.

[0062] In this embodiment, when the total number of puffs is not less than the preset threshold, it means that the number of times the user uses the aerosol generating component for puffing actions has been equal to or greater than the available number of puffs of the currently installed aerosol generating component.

[0063] In a specific implementation, the preset threshold can be pre-stored in the aerosol generating device, specifically in the storage unit of the aerosol generating device. When the aerosol generating device counts the number of puffs of the aerosol generating component through a counter and then obtains the total number of puffs, the processor MCU in the aerosol generating device can compare the obtained total number of puffs with the preset threshold stored in the storage unit. Thus, when the total number of puffs is not less than the preset threshold, stop operating according to the first driving signal.

[0064] It can be understood that when the total number of puffs is less than the preset threshold, it means that the substance in the aerosol generating component can still be atomized by heating, and when the user puffs, the atomized substance of the aerosol generating component can still be puffed. When the total number of puffs is not less than the preset threshold, it means that the substance in the aerosol generating component is not sufficient to be atomized by heating. At this time, if the user continues to puff, the atomized substance of the aerosol generating component cannot be puffed.

[0065] In the above solution, during the process of the aerosol generating device operating according to the first driving signal to heat the aerosol generating component, the working current of the aerosol generating device is sampled to obtain a real-time current value. Since the variation range of the real-time current value can characterize the temperature variation range when the aerosol generating device heats the aerosol generating component, the number of puffs of the aerosol generating component can be counted according to the variation range of the real-time current value, and then the total number of puffs can be obtained. Based on this, the total number of puffs and / or the available number of puffs of the aerosol generating component can be accurately detected. In this way, when the total number of puffs is not less than the preset threshold, stop operating according to the first driving signal, so that when the user uses the aerosol generating device and the aerosol generating component, the user can not only know the depletion situation of the material in the aerosol generating component, but also avoid ineffective heating of the aerosol generating component by stopping operating according to the first driving signal. Thus, the intelligence level of the aerosol generating device is improved, and the user experience of using the aerosol generating device and the aerosol generating component is improved.

[0066] As an embodiment, after step 110, it may further include: measuring the absolute value of the difference between two sets of real-time current values corresponding to the first driving signal in adjacent cycles as the change amplitude of the real-time current value.

[0067] In this embodiment, the first driving signal in adjacent cycles corresponds to two sets of real-time current values. By calculating the absolute value of the difference between these two sets of real-time current values, the change amplitude of the real-time current value can be determined, which is used as the basis for determining whether the user has performed a suction action or a sucking action on the aerosol generating device.

[0068] In specific implementation, a corresponding current sampling circuit may be provided in the aerosol generating device. The first driving signal may include a first pulse width. When triggering the first pulse width of the first driving signal, the working current of the heating circuit or the detection circuit where the coil is located can be detected through this current sampling circuit, and then the real-time current value can be obtained. By comparing the absolute value of the difference between two sets of real-time current values corresponding to the first driving signal in adjacent cycles, it is used as the change amplitude of the real-time current value.

[0069] It is easy to understand that in actual use, a reference difference can be configured to represent that the user has performed a suction action or a sucking action on the aerosol generating device. After calculating the absolute value of the difference between two sets of real-time current values corresponding to the first driving signal in adjacent cycles, this absolute value of the difference can be compared with the reference difference to determine whether the user has performed a suction action or a sucking action on the aerosol generating device.

[0070] As an embodiment, the real-time current value includes a sampled current value. After step 110, it may further include: if the sampled current value is not within the preset working current range, stop working according to the first driving signal.

[0071] In this embodiment, the pre-working current range refers to the working current range of the aerosol generating device when it is equipped with an aerosol generating component adapted to it. When the sampled current value in the real-time current value is not within this preset working current range, it indicates that the aerosol generating device is faulty at this time, or the aerosol generating component currently carried by the aerosol generating device is not adapted to it. Based on this, if the aerosol generating device continues to work according to the first driving signal at this time, not only can the aerosol generating component not be heated to the target temperature, but it may also cause damage to the internal circuit of the aerosol generating device.

[0072] It is easy to understand that in all embodiments of the present application, since the real-time current value can be used to characterize the change trend of the relative magnetic permeability during the heating operation of the magnetic excitation system composed of the aerosol generating device and the currently mounted aerosol generating component. It can be understood that the change trend of the relative magnetic permeability is related to temperature, so the change amplitude of the real-time current value can also characterize the temperature change amplitude when the aerosol generating device heats the aerosol generating component.

[0073] For example, when the aerosol generating device heats the aerosol generating component, when the aerosol generating component is not compatible with the aerosol generating device, the heating temperature of the aerosol generating device is too high. At this time, affected by the temperature, the real-time current of the aerosol generating device is not within the preset working current range, and then the aerosol generating device is controlled to stop working according to the first driving signal.

[0074] For another example, when the aerosol generating device heats the aerosol generating component, when the aerosol generating component is abnormally deformed or damaged, the receptor in the aerosol generating component cannot be normally coupled with the aerosol generating device, and the heating temperature of the aerosol generating device is too high or too low. At this time, affected by the temperature, the real-time current of the aerosol generating device is not within the preset working current range, and then the aerosol generating device is controlled to stop working according to the first driving signal.

[0075] In the above solution, by detecting whether the real-time working current is within the preset working current range, it can be used to judge whether the aerosol generating component is compatible with the aerosol generating device. And when the real-time working current is not within the preset working current range, by stopping working according to the first driving signal, overheat protection and fault protection of the aerosol generating device can be realized, improving the stability and safety of the aerosol generating device.

[0076] As an embodiment, the real-time current value includes a sampled current value. After step 110, it may further include: if the sampled current value increases to a preset no-load current value, stop working according to the first driving signal.

[0077] In this embodiment, the no-load current of the aerosol generating device can be a known current value.

[0078] It is easy to understand that when the sampled current value increases to the preset no-load current value, it means that the user has removed the aerosol generating component from the aerosol generating device at this time, that is, the aerosol generating device is in a no-load state at this time. In order to avoid the internal temperature of the aerosol generating device from continuing to rise due to no-load, stopping working according to the first driving signal can make the aerosol generating device stop working immediately, thereby avoiding the aerosol generating device from consuming its own electric energy due to no-load.

[0079] With Figure 1Taking the magnetic excitation system composed of the aerosol generating device and the aerosol generating component shown as an example, during the process when the aerosol generating device operates according to the first driving signal, if the aerosol generating component is pulled out from the aerosol generating device, at this time, the coupling between the coil in the aerosol generating device and the inductor in the aerosol generating component changes, causing the working current of the aerosol generating device to increase. Based on this, when the collected real-time current value, that is, the sampled current value, increases to the preset no-load current value, it can be determined that the aerosol generating component has abnormally fallen off or abnormally exited the bin. At this time, by stopping operating according to the first driving signal, dry burning of the aerosol generating device can be avoided.

[0080] In some embodiments, if the sampled current value increases to the preset no-load current value, the power supply switch and / or the power supply circuit of the aerosol generating device can also be directly disconnected. By directly disconnecting the power supply of the aerosol generating device, the aerosol generating device can be quickly stopped from heating, avoiding no-load dry burning of the aerosol generating device, and the aerosol generating device can also be quickly cooled down, improving the intelligence level of the aerosol generating device.

[0081] Figure 5 The flowchart showing the implementation of a control method for an aerosol generating device provided in another embodiment of the present application is shown. Different from Figure 4 the embodiment, Figure 5 in the shown embodiment, steps 210 to 230 are further included, specifically:

[0082] 210: Obtain the first real-time current value corresponding to the first driving signal.

[0083] 220: If the first real-time current value drops to the second real-time current value, then generate a second driving signal based on the difference between the first real-time current value and the second real-time current value.

[0084] 230: Operate according to the second driving signal to heat the aerosol generating component.

[0085] In this embodiment, the first real-time current value generally refers to the real-time current when the aerosol generating device operates according to the first driving signal to heat the aerosol generating component. Here, the second real-time current value is less than the first real-time current value. When the first real-time current value drops to the second real-time current value, it means that before this, the temperature of the aerosol generating component has dropped from the target temperature Tb.

[0086] It should be noted that when the temperature of the aerosol generating component drops from the target temperature Tb, it means that the user has used the aerosol generating device and the aerosol generating component, that is, the user has performed a suction action or a sucking action on the aerosol generating device, and the temperature of the aerosol generating component has dropped from the target temperature Tb to the current temperature under the drive of the air flow. For Figure 2Taking the target temperature Tb shown as an example, when the temperature drops between the temperature Tm and the target temperature Tb, the impedance in the RLC load resonance circuit formed by the aerosol generating device and the aerosol generating component changes, resulting in a change in the real-time current value of the aerosol generating device. Specifically, it can change from the target working current value I b to the minimum working current value I min and decrease. Based on this, when the first real-time current value drops to the second real-time current value, it can be determined whether the user has performed a suction action or a sucking action on the aerosol generating device based on the difference between the first real-time current value and the second real-time current value. Based on this, in order to enable the temperature of the aerosol generating device to be maintained at the target temperature Tb for normal use, at this time, based on the difference between the first real-time current value and the second real-time current value, a second driving signal is generated, and then the aerosol generating component is heated according to the second driving signal, which can enable the aerosol generating device to quickly heat up to the target temperature Tb.

[0087] In a specific implementation, the first real-time current value and the second real-time current value can be obtained by sampling through a current sampling circuit provided in the aerosol generating device. It can be understood that the sampling time of the second real-time current value is later than the sampling time of the first real-time current value.

[0088] It is easy to understand that in some embodiments, when heating the aerosol generating component according to the second driving signal, if the temperature of the aerosol generating device can be raised to the target temperature Tb, then the aerosol generating component can be heated again according to the first driving signal.

[0089] As an embodiment, step 220 includes:

[0090] If the difference between the first real-time current value and the second real-time current value is less than a preset current difference, then the first driving signal is used as the second driving signal.

[0091] If the difference between the first real-time current value and the second real-time current value is greater than the preset current difference, then the duty cycle of the first driving signal is increased to obtain the second driving signal.

[0092] In this embodiment, when the difference between the first real-time current value and the second real-time current value is less than the preset current difference, it indicates that the user has performed a small suction action or sucking action on the aerosol generating device at this time. Driven by the airflow, the temperature of the aerosol generating component is pulled down from the target temperature Tb, and the temperature difference pulled down is small. At this time, the aerosol generating component can continue to be heated according to the first driving signal. When the difference between the first real-time current value and the second real-time current value is greater than the preset current difference, it indicates that the user has performed a moderate or large suction action or sucking action on the aerosol generating device at this time. Driven by the airflow, the temperature of the aerosol generating component is pulled down from the target temperature Tb, and the temperature difference pulled down is large. At this time, the duty cycle of the first driving signal can be increased to obtain a second driving signal with a larger duty cycle, and then the aerosol generating component can be heated according to the second driving signal, and the temperature of the aerosol generating device can be quickly raised to the target temperature Tb.

[0093] Please refer to Figure 6 , Figure 6 which shows a schematic diagram of the change in the real-time current value of the aerosol generating device. As Figure 6 shown, the preset current difference is ΔI. In the example of the change of the first variable current ΔI1, the difference between the first real-time current value I1 and the second real-time current value I2 is the first variable current ΔI1, and the first variable current ΔI1 is greater than ΔI. At this time, the second driving signal can be obtained by increasing the duty cycle of the first driving signal.

[0094] In specific implementation, whether the first driving signal is used as the second driving signal or the second driving signal is obtained by increasing the duty cycle on the basis of the first driving signal, when heating the aerosol generating component according to the second driving signal, in order to avoid the user's suction actions or sucking actions in two consecutive times being relatively close, it can be made that when the aerosol generating device heats the aerosol generating component according to the second driving signal, the time required for its temperature to rise to the target temperature Tb satisfies the preset interval time. That is, based on the preset interval time, the amplitude of increasing the duty cycle of the first driving signal can be selected or formulated, so that the obtained second driving signal can be adapted to the preset interval time.

[0095] As an embodiment, after step 230, steps 1 to 3 are further included. Specifically:

[0096] Step 1: Obtain the trend of the real-time current change under the action of the second driving signal.

[0097] Step 2: If the trend of the real-time current change is continuously decreasing, increase the duty cycle of the second driving signal to obtain a third driving signal.

[0098] Step 3: Work according to the third driving signal to heat the aerosol generating component.

[0099] In this embodiment, the real-time current change trend under the action of the second driving signal refers to whether the working current value of the aerosol generating device increases or decreases when it operates according to the second driving signal. That is to say, the real-time current change trend can be understood as the difference between two adjacent (front and back) real-time current values. If the difference is positive, it means the current change trend is decreasing; if the difference is negative, it means the current change trend is increasing. Here, if the real-time current change trend is continuously decreasing, it means the real-time current value is continuously decreasing. At this time, the temperature of the carried aerosol generating component drops significantly, and more electrical energy is still required to heat it.

[0100] As Figure 6 shown, the preset current difference is ΔI. In the change example of the second changing current ΔI2, when the first real-time current value I1 drops to the second real-time current value I2, the change trend of the real-time current under the action of the second driving signal is continuously decreasing, that is, the change trend of the second changing current ΔI2 in Figure 6 appears. At this time, in order to pull the temperature of the aerosol generating device back to the target temperature Tb, the third driving signal is obtained by increasing the duty cycle of the second driving signal. Furthermore, it can operate according to the third driving signal with a larger duty cycle, so that the working current of the aerosol generating device can be further increased, and thus the heating temperature of the aerosol generating device can be pulled back to the target temperature Tb to heat the aerosol generating component.

[0101] As an embodiment, after step 3, it further includes:

[0102] Obtain the third real-time current value corresponding to the third driving signal. If the third real-time current value is not less than the target working current value, restart working according to the first driving signal to heat the aerosol generating component.

[0103] In this embodiment, the third real-time current value refers to the current value obtained by current sampling when the aerosol generating device operates according to the third driving signal.

[0104] As Figure 6 shown in the example, when the third real-time current value I3 is not less than the target working current value, that is, not less than I1, in order to keep the temperature of the aerosol generating device at the target temperature Tb, it can restart working according to the first driving signal to heat the aerosol generating component.

[0105] In the above scheme, by obtaining the third real-time current value corresponding to the third drive signal, when the third real-time current value is not less than the target working current value, the aerosol generating component is heated again according to the first drive signal, so that the temperature of the aerosol generating device can be maintained at the target temperature, thereby avoiding the temperature of the aerosol generating device being too high, causing adverse reactions such as overheating of the aerosol generating component, thereby improving the intelligence level of the aerosol generating device.

[0106] Please refer to Figure 7 , Figure 7 The schematic diagram of the structure of a control device of an aerosol generating device provided in an embodiment of the present application is shown. The control device of the aerosol generating device in this embodiment includes various units for executing Figures 4 to 5 For details, please refer to the steps in the corresponding embodiment. Figures 4 to 5 For the convenience of explanation, only the parts related to this embodiment are shown. Figure 7 The control device of the aerosol generating device includes: a detection unit 701, a counting unit 702 and a first execution unit 703. Specifically:

[0107] The detection unit 701 is used to work according to the first driving signal, heat the aerosol generating component, and sample the working current of the aerosol generating device to obtain a real-time current value;

[0108] The counting unit 702 is used to count the number of puffs of the aerosol generating assembly according to the change amplitude of the real-time current value to obtain the total number of puffs;

[0109] The first execution unit 703 is configured to stop operating according to the first driving signal when the total number of puffs is not less than a preset threshold.

[0110] As an embodiment, the control device of the aerosol generating device further includes:

[0111] The first acquisition unit is used to acquire a first real-time current value corresponding to the first driving signal.

[0112] The first generating unit is configured to generate a second driving signal based on a difference between the first real-time current value and the second real-time current value if the first real-time current value drops to a second real-time current value.

[0113] The third driving unit is used to operate according to the second driving signal to heat the aerosol generating component.

[0114] As an embodiment, the control device of the aerosol generating device further includes:

[0115] The second acquisition unit is used to acquire the real-time current change trend under the action of the second driving signal.

[0116] A second generation unit, configured to increase the duty cycle of the second driving signal to obtain a third driving signal if the real-time current change trend is continuously decreasing.

[0117] A fourth driving unit, configured to operate according to the third driving signal to heat the aerosol generating component.

[0118] As an embodiment, the control device of the aerosol generating device further includes:

[0119] A third acquisition unit, configured to acquire a third real-time current value corresponding to the third driving signal.

[0120] A fifth driving unit, if the third real-time current value is not less than the target working current value, then re-operate according to the first driving signal to heat the aerosol generating component.

[0121] It can be understood that the improvement points and specific implementation manners related to the present application have been Figures 1 to 6 described in detail in the corresponding embodiments. When specifically implementing, it can be Figures 1 to 6 based on the corresponding embodiments to make Figure 7 the units in the control device of the aerosol generating device provided in the embodiments execute the steps in each method embodiment described above, so details are not described herein again.

[0122] Figure 8 is a structural block diagram of an aerosol generating device provided by an embodiment of the present application. As Figure 8 shown, the aerosol generating device 8 in this embodiment includes: a processor 80, a memory 81, and a computer program 82 stored in the memory 81 and executable on the processor 80, such as a program for the control method of the aerosol generating device. When the processor 80 executes the computer program 82, the steps in each embodiment of the above-mentioned control method of the aerosol generating device are implemented, such as Figures 4 to 5 the steps shown. Alternatively, when the processor 80 executes the computer program 82, the functions of the units in the corresponding Figure 6 embodiments are implemented. For specific reference, please refer to Figure 7 the relevant descriptions in the corresponding embodiments, which are not described herein again.

[0123] An embodiment of the present application further provides an aerosol generation system, including an aerosol generating component, and further including an aerosol generating device provided by the above-mentioned embodiment.

[0124] It can be understood that the improvement points and specific implementation manners related to the present application have been Figures 1 to 6 described in detail in the corresponding embodiments. When specifically implementing, it can be Figures 1 to 6The aerosol generation system is implemented based on the corresponding embodiments, so it will not be elaborated here.

[0125] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A control method for an aerosol generating device, characterized in that, The aerosol generating device is used to carry an aerosol generating component, and the control method includes: Working according to the first driving signal, the aerosol generating component is heated, and the working current of the aerosol generating device is sampled to obtain a real-time current value; Counting the number of puffs of the aerosol generating assembly according to the amplitude of the change of the real-time current value to obtain a total number of puffs; When the total number of puffs is not less than a preset threshold, the operation according to the first drive signal is stopped.

2. The control method according to claim 1, characterized in that, The first driving signal includes a first pulse width; The step of sampling the working current of the aerosol generating device to obtain a real-time current value includes: According to the first pulse width, the working current of the aerosol generating device is sampled to obtain a real-time current value.

3. The control method according to claim 1, wherein, After the step of sampling the working current of the aerosol generating device to obtain the real-time current value, the method further includes: The absolute value of the difference between the two groups of the real-time current values ​​corresponding to the first driving signal in adjacent cycles is calculated as the variation amplitude of the real-time current value.

4. The control method according to claim 1, characterized in that The real-time current value includes a sampled current value; After the step of sampling the working current of the aerosol generating device to obtain a real-time current value, the method further includes: If the sampled current value is not within the preset operating current range, the operation according to the first driving signal is stopped.

5. The control method according to claim 1, wherein The real-time current value includes a sampled current value; After the step of sampling the working current of the aerosol generating device to obtain a real-time current value, the method further includes: If the sampled current value increases to a preset no-load current value, the operation according to the first driving signal is stopped.

6. The control method according to claim 1, wherein Also includes: Acquire a first real-time current value corresponding to the first driving signal; If the first real-time current value drops to a second real-time current value, generating a second drive signal based on a difference between the first real-time current value and the second real-time current value; The aerosol generating component is heated according to the second driving signal.

7. The control method according to claim 6, characterized in that The generating a second driving signal based on the difference between the first real-time current value and the second real-time current value comprises: If the difference between the first real-time current value and the second real-time current value is less than a preset current difference, the first drive signal is used as the second drive signal; If the difference between the first real-time current value and the second real-time current value is greater than a preset current difference, the duty cycle of the first drive signal is increased to obtain the second drive signal.

8. The control method according to claim 6 or 7, characterized in that, After the step of heating the aerosol generating assembly according to the second driving signal, the method further comprises: Obtaining a real-time current change trend under the action of the second driving signal; If the real-time current variation trend is continuously decreasing, increasing the duty cycle of the second drive signal to obtain a third drive signal; The aerosol generating component is heated according to the third driving signal.

9. The control method according to claim 8, wherein, After the step of operating according to the third drive signal to heat the aerosol generating assembly, the method further includes: Acquire a third real-time current value corresponding to the third driving signal; If the third real-time current value is not less than the target operating current value, the device resumes operation according to the first driving signal to heat the aerosol generating component.

10. An aerosol generating device, characterized in that, Comprising: a memory, a processor, and a computer program stored in the memory and executable on the aerosol generating device, wherein when the processor executes the computer program, the steps of the control method of the aerosol generating device according to any one of claims 1 to 9 are implemented.

11. An aerosol generating system, characterized in that, An aerosol generating assembly, and further comprising the aerosol generating device according to claim 10.

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