Aerosol generating device and control method thereof

Abstract

The present invention provides an aerosol generating device and a method for controlling the same. The aerosol generating device comprises: a chamber (A) for removably receiving an aerosol generating product (40) containing a magnetic material (43); a heater (10) for heating the aerosol generating product (40) received in the chamber (A) to generate an aerosol; a detection circuit (32) including a capacitor (C2) connected in series with the heater (10); and a controller (31) configured to control the detection circuit (32) to implement a direct current flow and to determine whether the aerosol generating product (40) is received in the chamber (A) or whether the aerosol generating product (40) is removed from the chamber (A) according to the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold. The device determines whether the aerosol generating product (40) is inserted into the heating chamber (A) based on the time when the potential difference across the capacitor (C2) reaches a preset potential difference threshold, and further controls the operation of the heater (10); the implementation is simple and improves the user experience.

Description

Technology Field

[0001] This application claims priority to a Chinese patent application filed with the Chinese Intellectual Property Office on Wednesday, September 8, 2021, with application number 202111048301.8 and title of the invention, “Aerosol generating device and method for controlling the same,” all of which are incorporated herein by reference.

[0002] The present application relates to the field of smoking tools, and in particular to an aerosol generating device and a method for controlling the same. Background Technology

[0003] For example, smoking products such as cigarettes and cigars generate smoke by burning tobacco during use. Attempts have already been made to provide substitutes for these tobacco-burning products through products that release compounds in a non-combustion state. An example of such a product is the so-called heated non-combustion product, which releases compounds by heating the tobacco rather than burning it.

[0004] The patent document of publication number CN111511233A discloses an aerosol generating device and a method of operation thereof, wherein an electromagnetic inductor is provided in a cigarette and a detector having a coil is provided in the aerosol generating device; electromagnetic induction occurs between the coil and the electromagnetic inductor and a change in the characteristics of the current generated by the electromagnetic induction and flowing through the coil is detected so that the state in which the cigarette is inserted into the aerosol generating device can be determined.

[0005] The present application aims to provide an aerosol generating device and a control method thereof that differ from a conventional tobacco insertion detection method.

[0006] The present application provides, in one embodiment, an aerosol generating device,

[0007] A chamber for removably accommodating an aerosol-generating product containing a magnetic material;

[0008] A heater for generating an aerosol by heating an aerosol generating product contained in the chamber above;

[0009] A detection circuit including a capacitor connected in series with the above heater;

[0010] The present invention includes a controller configured to control the detection circuit to implement a direct current flow, and to determine whether the aerosol generating product is contained within the chamber or whether the aerosol generating product is removed from the chamber, depending on the duration during which the potential difference across the capacitor reaches a preset potential difference threshold. In another aspect of the present invention, a method for controlling an aerosol generating device is provided, wherein the aerosol generating device comprises a chamber, a heater, and a detection circuit, and the detection circuit comprises a capacitor connected in series with the heater, and the method comprises

[0011] A step of controlling the above detection circuit to implement a direct current flow;

[0012] The method includes a step of determining that the aerosol generating product is contained within the chamber or that the aerosol generating product is removed from the chamber, depending on the duration during which the potential difference across the capacitor reaches a preset potential difference threshold.

[0013] The aerosol generating device and control method provided by the present application determine whether a cigarette is inserted into a heating chamber based on the time it takes for the potential difference across a capacitor to reach a preset potential difference threshold, and further control the operation of a heater; the implementation is simple and the user experience is enhanced. Brief explanation of the drawing

[0014] One or more embodiments are described illustratively through the drawings corresponding thereto, but such illustrative description is not limiting to the embodiments, components having the same reference numeral in the drawings represent similar components, and the drawings in the drawings are not limited in proportion except as specifically described. FIG. 1 is a drawing of an aerosol generating device provided by an embodiment of the present application. FIG. 2 is a drawing of an aerosol-generating product provided by an embodiment of the present application. FIG. 3 is a drawing of a controller provided by an embodiment of the present application. FIG. 4 is a diagram of a detection circuit and a switching tube circuit provided by an embodiment of the present application. FIG. 5 is a diagram of a control method for an aerosol generating device provided by an embodiment of the present application. FIG. 6 is a diagram of the control process of an aerosol generating device provided by an embodiment of the present application. Specific details for implementing the invention

[0015] To facilitate understanding of the present application, the present application will be described in detail below with reference to the attached drawings and specific embodiments. It should be noted that when one element is said to be "fixed" to another element, it may be directly on the other element, or one or more intermediate elements may exist between them. When one element is said to be "connected" to another element, it may be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "up," "down," "left," "right," "inside," "outside," and similar terms used herein are for illustrative purposes only.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the meanings commonly understood by those skilled in the art of this application. Terms used in the description of this application within this specification are intended to describe specific embodiments and are not intended to limit this application. As used herein, “and / or” includes any and all combinations of one or more related listed items.

[0017] FIG. 1 is a drawing of an aerosol generating device provided by an embodiment of the present application. The aerosol generating device comprises:

[0018] A chamber (A) for removably accommodating an aerosol generating product (40);

[0019] A heater (10) for heating and generating aerosol when the aerosol generating product (40) is received in the chamber (A);

[0020] A battery cell (20) for supplying power;

[0021] It includes a circuit board (30) provided between the battery cell (20) and the heater (10). Various circuits for controlling the aerosol generating device are integrated on the circuit board (30), for example, controlling the battery cell (20) to supply power to the heater (10).

[0022] The aerosol generating article (40) preferably uses a tobacco-containing material that releases volatile compounds from the raw material when heated; or it may be a non-tobacco material suitable for generating smoke by electric heating after heating. The aerosol generating article (40) preferably uses a solid raw material and comprises one or more powders, granules, fragmented fine strips, strips, or flakes of vanilla leaves, tobacco leaves, homogenized tobacco, and expanded tobacco; or, the solid raw material may comprise additional volatile flavoring compounds of tobacco or non-tobacco that are released when the raw material is heated. In some examples, the aerosol generating product (40) comprises a liquid raw material, a carrier bearing the liquid raw material, or a container bearing the liquid raw material.

[0023] It should be noted that the heating method of the heater (10) includes, but is not limited to, resistance heating, electromagnetic heating, and infrared heating. As an exemplary embodiment, the shape of the heater (10) includes, but is not limited to, a needle shape, a fin shape, a tube shape, or a sheet shape.

[0024] Also, it should be noted that, unlike the example in FIG. 1, in other examples, the heater (10) can surround at least some of the aerosol generating product (40) and perform heating, that is, it is possible to configure it as generally referred to as circumferential heating or ambient heating.

[0025] FIG. 2 is a drawing of an aerosol-generating product provided by an embodiment of the present application.

[0026] The aerosol generating product (40) includes a filter section (41) and an aerosol generating section (42) equipped with an inhalable substance. In a preferred embodiment, the aerosol generating device (40) is equipped with a magnetic material (43). The magnetic material (43) may be an iron magnetic material or other material having a permeability of about 100 H / m or more. The magnetic material (43) may be a coating formed on the outer surface of the aerosol generating product (40), for example, provided near the bottom of the aerosol generating section (42); or provided on a member of the outer surface of the aerosol generating product (40); or the magnetic material (43) may be provided within the aerosol generating product (40) and mixed with inhalable water.

[0027] FIG. 3 is a drawing of a controller provided by an embodiment of the present application, and FIG. 4 is a drawing of a detection circuit and a switching tube circuit provided by an embodiment of the present application.

[0028] In this example, the controller (31), detection circuit (32), and switching tube circuit (33) are integrated on the circuit board (30). It is, of course, possible to integrate them on other circuit boards. The controller (31) uses a Micro Controller Unit (MCU). In other embodiments, it will be understood that the controller (31) may use a dedicated integrated chip or another chip having processor functions.

[0029] In this example, the controller (31) has a TEST_VCC port, a TEST_AIN port, a PWM_0UT_P port, and a PWM_0UT_N port.

[0030] The detection circuit (32) includes a resistor (R2) and a capacitor (C2), and the resistor (R2), capacitor (C2), and heater (10) are connected in series. Specifically, one end of the resistor (R2) is electrically connected to the TEST_VCC port of the controller (31), and the other end of the resistor (R2) is electrically connected to one end of the heater (10) (indicated as WH+ in the drawing); the other end of the heater (10) (indicated as WH- in the drawing) is electrically connected to one end of the capacitor (C2) and the TEST_AIN port of the controller (31), and the other end of the capacitor (C2) is connected to ground.

[0031] The switching tube circuit (33) includes a switching tube (Q3), a switching tube (Q5), and a switching tube (Q7), wherein the switching tube (Q3) and the switching tube (Q7) use NM0S tubes, and the switching tube (Q5) uses PM0S tubes. The PWM_0UT_P port of the controller (31) is electrically connected to the gate of the switching tube (Q3), the drain of the switching tube (Q3) is electrically connected to the gate of the switching tube (Q5), and the source of the switching tube (Q3) is grounded; the source of the switching tube (Q5) is electrically connected to the battery cell (20) (indicated as VBAT in the drawing), and the drain of the switching tube (Q5) is electrically connected to one end of the heater (10) (indicated as WH+ in the drawing); The PWM_0UT_N port is electrically connected to the gate of the switching tube (Q7), the drain of the switching tube (Q7) is electrically connected to the other end of the heater (10) (indicated as WH- in the drawing), and the source of the switching tube (Q7) is grounded; other components and their electrical connection relationships can be referenced as shown in FIG. 3. The switching tube circuit (33) is configured to conduct or disconnect the electrical connection between the heater (10) and the battery cell (20) (indicated as VBAT in the drawing).

[0032] In this example, the controller (31) outputs a control signal to block the switching tube circuit (33); after the switching tube circuit (33) is blocked and the timing time of the timer is reached, the controller controls the detection circuit (32) to implement a DC flow, and depending on the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold, it is determined that the aerosol generating product (40) is contained within the chamber (A) or that the aerosol generating product (40) is removed from the chamber (A), and further configured to control the operation of the heat (10).

[0033] Specifically, the controller (31) controls the PWM_OUT_P port to output a low level so that the switching tube (Q3) is blocked and further the switching tube (Q5) is blocked; additionally, the controller controls the PWM_OUT_N port to output a low level so that the switching tube (Q7) is blocked; thereby, the electrical connection between the heater (10) and the battery cell (20) can be blocked.

[0034] The above controller (31) has a timer (not shown) integrated therein and controls the operation of the heater (10), that is, the heating of the heater (10), by activating a determination function to determine whether the aerosol generating product (40) is received in the chamber (A) through a time-lapse wake-up function, thereby controlling the operation of the heater (10), i.e., the heating of the heater (10), to start or stop.

[0035] The controller (31) can control the TEST_VCC port to output a high level so that the detection circuit (32) can implement a DC flow.

[0036] As illustrated in FIG. 4, the heater (10) can be equivalent to a series connection of a resistor (R) and an inductor (L), where the resistor (R) is a fixed value and the inductance of the inductor (L) is related to whether the aerosol generating product (40) is received in the chamber (A), that is, whether the aerosol generating product (40) is inserted into the chamber (A).

[0037] The line impedance of the detection circuit (32) can be expressed by the following equation.

[0038]

[0039] Here, |Z| is the line impedance, XL is the inductive reactance of the inductor (L), and X c2 is the capacitive reactance of the capacitor (C2).

[0040] A change in the inductance of the inductor (L) affects the magnitude of the line impedance |Z| and further changes the charging time of the capacitor (C2). Specifically, when the aerosol generating device (40) is inserted into the chamber (A), the aerosol generating device (40) equipped with a magnetic material can increase the inductance of the inductor (L) and increase the line impedance |Z|.

[0041] Accordingly, after the controller (31) controls the TEST_VCC port to output a high level, the charging time of the capacitor (C2) differs depending on whether the aerosol generating product (40) is inserted into the chamber (A) or not; the charging time of the capacitor (C2) when the aerosol generating product (40) is inserted into the chamber (A) is longer than the charging time of the capacitor (C2) when the aerosol generating product (40) is not inserted into the chamber (A).

[0042] Based on the above principle, depending on the duration for which the potential difference across the capacitor (C2) reaches a preset potential difference threshold, it is determined that the aerosol generating product (40) is contained within the chamber (A) or that the aerosol generating product (40) is removed from the chamber (A), and furthermore, the operation of the heat (10) is controlled.

[0043] In this example, the TEST_AIN port of the controller (31) is an interrupt port, and a chronograph (not shown) is integrated within the controller (31).

[0044] The controller (31) controls the TEST_VCC port to output a high level, and when the high level is output, it controls the chronograph to start the timer; when the potential difference across the capacitor (C2) reaches a preset potential difference threshold, it generates an interrupt to obtain the timer of the chronograph; and depending on the timer of the chronograph, it determines whether the aerosol generating product (40) is contained within the chamber (A) or whether the aerosol generating product (40) is removed from the chamber (A), and further controls the operation of the heater (10).

[0045] In this example, the preset potential difference threshold is a high level, which may be the potential difference between the two ends when the capacitor (C2) is fully charged, and may also be lower than the potential difference between the two ends when the capacitor (C2) is fully charged.

[0046] As a selectable embodiment, the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold can be compared with a preset time threshold;

[0047] If the duration for the potential difference across the capacitor (C2) to reach a preset potential difference threshold is greater than the preset time threshold, it is determined that the aerosol generating product (40) is contained in the chamber (A), and at this time, a control signal (e.g., a square wave signal) is output to control the switching tube circuit (33) to operate, and furthermore, the heater (10) can be operated to perform heating.

[0048] If the duration for the potential difference across the capacitor (C2) to reach a preset potential difference threshold is not greater than the preset time threshold, it is determined that the aerosol generating product (40) is not contained in the chamber (A), and at this time, the switching tube circuit (33) can be kept in a blocked state, that is, the heater (10) can be kept in an unheated state.

[0049] Here, the preset time threshold can be set as the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold when the aerosol generating product (40) is not contained in the chamber (A).

[0050] Based on the above judgment, when an aerosol generating product (40) is inserted into the chamber (A), the heater (10) can be automatically controlled to start heating without key operation, thereby improving the user experience. On the other hand, when an aerosol generating product (40) that is not equipped with a magnetic material is inserted into the chamber (A), the change in line impedance |Z| is very small, so there is almost no change in the time it takes for the potential difference across the capacitor (C2) to reach a preset potential difference threshold; at this time, the heater (10) is not controlled to start heating automatically, thereby serving as an anti-counterfeiting measure.

[0051] In another selectable embodiment, the duration for which the potential difference across the capacitor (C2) reaches a preset potential difference threshold and the difference value between the preset time threshold are determined; if the difference value is greater than zero and not greater than the preset difference value threshold, a control signal (e.g., a square wave) is output to control the switching tube circuit (33) to operate, and further, the heater (10) is activated to perform heating; if the difference value is greater than the preset difference value threshold or is less than or equal to zero, the switching tube circuit (33) can be controlled to maintain the cutoff.

[0052] In the corresponding embodiment, the aerosol generating product (40) equipped with a magnetic material has a constant time interval between when the aerosol generating product (40) is inserted into the chamber (A) and when the aerosol generating product (40) is not inserted into the chamber (A) due to the consistency of the magnetic material. Accordingly, when the difference between the duration for which the potential difference across the capacitor (C2) reaches a preset potential difference threshold and the preset time threshold is determined to be within a preset range, it is determined that the aerosol generating product (40) is contained in the chamber (A), and the heater (10) is automatically controlled to start heating without key operation, thereby improving the user experience. Otherwise, if the difference between the duration for which the potential difference across the capacitor (C2) reaches a preset potential difference threshold and the preset time threshold is greater than the preset difference threshold, the aerosol generating product (40) can be determined to be a counterfeit product, and in this case, the heater (10) is not controlled to start heating. Furthermore, if the difference between the duration for the potential difference across the capacitor (C2) to reach a preset potential difference threshold and the preset time threshold is less than or equal to zero, it can be determined that the aerosol generating product (40) is not contained in the chamber (A), and even in this case, the heater (10) is not controlled to start heating.

[0053] In the two embodiments described above, if heating has already been started by controlling the heater (10), when the heater (10) reaches a heating interval, a determination can be initiated to determine whether the aerosol generating product (40) is again contained in the chamber (A). If the aerosol generating product (40) is inserted into the chamber (A), heating is continued; if the aerosol generating product (40) is removed from the chamber (A), heating is stopped. The determination process may refer to the embodiments described above.

[0054] In this example, it should be noted that the heating interval refers to the time period between two adjacent high levels (or low levels) of the square wave signal.

[0055] In addition, it should be noted that, unlike the above example, in other examples, the controller (31) may not be interrupt-dependent, that is, the TEST_AIN port may be a general port. In this case, the controller (31) obtains the timer of the chronograph when the potential difference across the capacitor (C2) reaches a preset potential difference threshold. The subsequent process is similar to that described above, and a detailed explanation will be omitted here.

[0056] FIG. 5 is a diagram of a control method for an aerosol generating device provided by an embodiment of the present application. The aerosol generating device is consistent with the above description, and a detailed description thereof will be omitted.

[0057] The above method includes the following steps.

[0058] Step S11: Control the detection circuit (32) to implement a direct current flow;

[0059] Step S12: Depending on the duration for the potential difference across the capacitor (C2) to reach a preset potential difference threshold, it is determined that the aerosol generating product (40) is contained within the chamber (A) or that the aerosol generating product (40) is removed from the chamber (A).

[0060] In one example, the above method is,

[0061] When controlling the detection circuit (32) to implement a direct current flow, the step of controlling the chronograph to start the timekeeping;

[0062] A step of obtaining the timing time of the chronograph when the potential difference across the capacitor (C2) reaches a preset potential difference threshold;

[0063] The method includes a step of determining, based on the timing of the chronograph, that the aerosol generating product (40) is contained within the chamber (A) or that the aerosol generating product (40) is removed from the chamber (A).

[0064] In one example, the above method is,

[0065] A step of outputting a first control signal to block the switching tube circuit (33);

[0066] A step of controlling the detection circuit (32) to implement direct current flow when the switching tube circuit (33) is blocked;

[0067] The method includes a step of determining that the aerosol generating product (40) is contained within the chamber (A) or that the aerosol generating product (40) is removed from the chamber (A) depending on the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold.

[0068] In one example, the step of determining whether the aerosol generating product (40) is contained within the chamber (A) or whether the aerosol generating product (40) is removed from the chamber (A) depending on the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold,

[0069] A step of comparing the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold with a preset time threshold;

[0070] If the duration for the potential difference across the capacitor (C2) to reach a preset potential difference threshold is greater than a preset time threshold, a second control signal is output to control the switching tube circuit (33) to operate, and further, the heater (10) is operated to perform heating;

[0071] If the duration for the potential difference across the capacitor (C2) to reach a preset potential difference threshold is not greater than a preset time threshold, the switching tube circuit (33) is controlled to maintain the blockage.

[0072] In one example, the step of determining whether the aerosol generating product (40) is contained within the chamber (A) or whether the aerosol generating product (40) is removed from the chamber (A) depending on the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold,

[0073] A step of determining the difference between the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold and the preset time threshold;

[0074] If the difference value is not greater than a preset difference value threshold and is greater than zero, a third control signal is output to control the switching tube circuit (33) to operate, and further, the heater (10) is operated to perform heating;

[0075] If the difference value is greater than a preset difference value threshold, the step of controlling the switching tube circuit to maintain blocking is included.

[0076] In one example, the above method is,

[0077] After reaching the timing time of the above timer, a step of controlling the detection circuit (32) to implement a direct current flow;

[0078] The method includes a step of determining that the aerosol generating product (40) is contained within the chamber (A) or that the aerosol generating product (40) is removed from the chamber (A) depending on the duration during which the potential difference across the capacitor (C2) reaches a preset potential difference threshold.

[0079] FIG. 6 is a diagram of the control process of an aerosol generating device provided by an embodiment of the present application.

[0080] Specifically, the control process includes the following steps.

[0081] Step S21: The switching tube circuit (33) is blocked;

[0082] The controller (31) controls the PWM_OUT_P port to output a low level so that the switching tube (Q3) is blocked and further the switching tube (Q5) is blocked; additionally, it controls the PWM_OUT_N port to output a low level so that the switching tube (Q7) is blocked; thereby the electrical connection between the heater (10) and the battery cell (20) is blocked.

[0083] Step S22: Determine whether the timer's timing time has been reached;

[0084] The operation of the heater (10) is controlled by activating the function of whether the aerosol generating product (40) is received in the chamber (A) through the scheduled wake-up function. If the timing time of the timer is not reached, the switching tube circuit (33) remains shut off.

[0085] Step S23: When controlling the TEST_VCC port to output a high level, control the chronograph to start the timer;

[0086] Step S24: Determine whether the TEST_AIN port has received an interrupt signal;

[0087] S25 Step: Acquire chronograph timing;

[0088] For example, when a high-level signal generates an interrupt, the chronograph's timing is read through the interrupt program.

[0089] Step S26: Determine whether the chronograph's starting time is greater than a preset time threshold.

[0090] If it is greater than a preset time threshold, step S27 is performed; otherwise, it is determined that the aerosol generating product (40) is not contained in the chamber (A), so the switching tube circuit (33) can remain blocked and wait for a timely wake-up.

[0091] Steps S27 and S28: It is determined that the aerosol generating product (40) is contained in the chamber (A), and at this time, a square wave signal is output to control the switching tube circuit (33), and further, the heater (10) is activated to perform heating.

[0092] As should be explained, while the specification and drawings of this application present preferred embodiments of this application, this application may be implemented in many different forms and is not limited to the embodiments described in this specification. Such embodiments are not an additional limitation to the content of this application, and the purpose of providing such embodiments is to make the content disclosed in this application more thorough and comprehensive. Furthermore, various embodiments not exemplified above, formed by continuously combining each of the above technical features, are all within the scope of the description in this application. Moreover, a person skilled in the art may make improvements or modifications based on the above description, and all such improvements and modifications shall be within the scope of protection of the appended claims of this application.

Claims

Claim 1 An aerosol generating device comprising: a chamber for removably receiving an aerosol generating product including a magnetic material; a heater for heating the aerosol generating product received in the chamber to generate an aerosol; a detection circuit including a capacitor connected in series with the heater; and a controller configured to control the detection circuit to implement a direct current flow and, depending on the duration for which the potential difference across the capacitor reaches a preset potential difference threshold, to determine whether the aerosol generating product is received in the chamber or whether the aerosol generating product is removed from the chamber. Claim 2 An aerosol generating device according to claim 1, wherein the detection circuit further comprises a resistor connected in series with the heater. Claim 3 An aerosol generating device according to claim 1, wherein the controller includes a first port; one end of the detection circuit is electrically connected to the first port and the other end is electrically connected to the ground; and the controller is configured to control the first port to output a high level so that the detection circuit implements a direct current flow. Claim 4 An aerosol generating device according to claim 3, wherein the controller includes a second port; one end of the capacitor is electrically connected to the second port and the heater, and the other end is electrically connected to the ground; the controller further includes a chronograph; when the controller controls the first port to output a high level, it controls the chronograph to start timing; it obtains a potential difference across the capacitor through the second port; when the potential difference across the capacitor reaches a preset potential difference threshold, it obtains a timing time of the chronograph; and, depending on the timing time of the chronograph, it determines whether the aerosol generating product is contained within the chamber or whether the aerosol generating product is removed from the chamber. Claim 5 An aerosol generating device according to claim 3, wherein the controller includes an interrupt port; one end of the capacitor is electrically connected to the interrupt port and the heater, and the other end is electrically connected to the ground; the controller further includes a chronograph; the controller controls the chronograph to start timing when it outputs a high level by controlling the first port; generates an interrupt when the potential difference across the capacitor reaches a preset potential difference threshold to obtain the timing time of the chronograph; and is configured to determine, based on the timing time of the chronograph, that the aerosol generating product is contained within the chamber or that the aerosol generating product is removed from the chamber. Claim 6 The aerosol generating device according to claim 1 further comprises a switching tube circuit; the switching tube circuit is configured to conduct or interrupt the electrical connection between the heater and the battery cell; the controller outputs a first control signal to interrupt the switching tube circuit; when the switching tube circuit is interrupted, the controller controls the detection circuit to implement a direct current flow; and, depending on the duration during which the potential difference across the capacitor reaches a preset potential difference threshold, determines whether the aerosol generating product is contained within the chamber or whether the aerosol generating product is removed from the chamber, and further controls the switching tube circuit. Claim 7 An aerosol generating device according to claim 6, wherein the controller compares the duration for which the potential difference across the capacitor reaches a preset potential difference threshold with a preset time threshold; if the duration for which the potential difference across the capacitor reaches the preset potential difference threshold is greater than the preset time threshold, it outputs a second control signal to control the switching tube circuit to operate and further activates the heater to perform heating; and if the duration for which the potential difference across the capacitor reaches the preset potential difference threshold is not greater than the preset time threshold, it controls the switching tube circuit to maintain a blockage. Claim 8 In claim 6, the controller determines the difference between the duration during which the potential difference across the capacitor reaches a preset potential difference threshold and a preset time threshold; if the difference value is greater than zero and not greater than a preset difference threshold, it outputs a third control signal to control the switching tube circuit to operate and further activates the heater to perform heating; and if the difference value is greater than a preset difference threshold or is less than or equal to zero, it controls the switching tube circuit to maintain a blockage, characterized by an aerosol generating device. Claim 9 An aerosol generating device according to claim 7 or 8, wherein the controller controls the detection circuit again to implement a direct current flow when the heater is in a heating interval; and is configured to determine whether the aerosol generating product is contained within the chamber or whether the aerosol generating product is removed from the chamber, depending on the duration for which the potential difference across the capacitor reaches a preset potential difference threshold. Claim 10 An aerosol generating device according to claim 1, wherein the controller further includes a timer; the controller controls the detection circuit to implement a direct current flow after reaching the timing time of the timer; and is configured to determine whether the aerosol generating product is contained within the chamber or whether the aerosol generating product is removed from the chamber, depending on the duration during which the potential difference across the capacitor reaches a preset potential difference threshold. Claim 11 A method for controlling an aerosol generating device, wherein the aerosol generating device comprises a chamber, a heater, and a detection circuit, and the detection circuit comprises a capacitor connected in series with the heater, and the method for controlling the aerosol generating device comprises the step of controlling the detection circuit to implement a direct current flow; and the step of determining that an aerosol generating product is contained within the chamber or that an aerosol generating product is removed from the chamber, depending on the duration during which the potential difference across the capacitor reaches a preset potential difference threshold. Claim 12 In claim 11, the aerosol generating device further comprises a chronograph; and the control method of the aerosol generating device comprises the steps of: controlling the chronograph to start timing when the detection circuit is controlled to implement a direct current flow; obtaining the timing time of the chronograph when the potential difference across the capacitor reaches a preset potential difference threshold; and determining, based on the timing time of the chronograph, that the aerosol generating product is contained within the chamber or that the aerosol generating product is removed from the chamber. Claim 13 In claim 11, the aerosol generating device further comprises a switching tube circuit; and the control method of the aerosol generating device comprises the steps of: outputting a first control signal to cause the switching tube circuit to be blocked; when the switching tube circuit is blocked, controlling the detection circuit to implement a direct current flow; and, depending on the duration for which the potential difference across the capacitor reaches a preset potential difference threshold, determining that the aerosol generating product is contained within the chamber or that the aerosol generating product is removed from the chamber, and further controlling the switching tube circuit. Claim 14 A method for controlling an aerosol generating device according to claim 13, wherein the step of determining whether the aerosol generating product is contained within the chamber or whether the aerosol generating product is removed from the chamber, and further controlling the switching tube circuit, depending on the duration during which the potential difference across the capacitor reaches a preset potential difference threshold, comprises: a step of comparing the duration during which the potential difference across the capacitor reaches a preset potential difference threshold with a preset time threshold; if the duration during which the potential difference across the capacitor reaches a preset potential difference threshold is greater than the preset time threshold, a step of outputting a second control signal to control the switching tube circuit to operate and further operating the heater to perform heating; and if the duration during which the potential difference across the capacitor reaches a preset potential difference threshold is not greater than the preset time threshold, a step of controlling the switching tube circuit to maintain a blockage. Claim 15 A method for controlling an aerosol generating device according to claim 13, wherein the step of determining whether the aerosol generating product is contained within the chamber or removed from the chamber based on the duration during which the potential difference across the capacitor reaches a preset potential difference threshold, comprises: a step of determining the difference value between the duration during which the potential difference across the capacitor reaches a preset potential difference threshold and a preset time threshold; a step of, if the difference value is greater than zero and not greater than a preset difference value threshold, outputting a third control signal to control the switching tube circuit to operate and further operating the heater to perform heating; and, if the difference value is greater than a preset difference value threshold, controlling the switching tube circuit to maintain a blockage. Claim 16 In claim 11, the aerosol generating device further comprises a timer; and the control method of the aerosol generating device comprises the step of controlling the detection circuit to implement a direct current flow after reaching the timing time of the timer; and the step of determining that the aerosol generating product is contained within the chamber or that the aerosol generating product is removed from the chamber, depending on the duration during which the potential difference across the capacitor reaches a preset potential difference threshold.

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