Computer program product, storage medium, control device, aerosol generating device and control method thereof

The aerosol generating device uses a detection coil within the magnetic field of a heating element to determine temperature and conditions based on resonant frequency, addressing structural restrictions and cleaning difficulties.

JP7827834B2Active Publication Date: 2026-03-10SHENZHEN MERIT TECH CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-08-03
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

Aerosol generating devices are restricted in structural design and difficult to clean due to the need for a temperature sensor and electrical connection.

Method used

The device uses a detection coil within the magnetic field of a heating element with magnetic temperature characteristics, determining temperature and other conditions based on resonant frequency without a temperature sensor, allowing for a flexible design and easy cleaning.

Benefits of technology

This method enables structural flexibility and simplifies cleaning by eliminating the need for a temperature sensor and electrical connections, while accurately detecting temperature and other conditions.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

In the computer program product, storage medium, control device, aerosol generating device, and control method thereof, the aerosol generating device includes a resonant module (12) including a detection coil (L1) and at least a part of the detection coil (L1) being located within the magnetic field of the heating element (30), and a control module (11) used to control the resonance module (12) to operate in a resonant state, identify the resonance frequency of the resonance module (12) based on the voltage signal of the detection coil (L1), and identify the corresponding detection result based on the resonance frequency. In this case, since the corresponding detection function can be realized without providing a temperature sensor, the problem of the structural design of the aerosol generating device being restricted is solved. In addition, since the detection coil (L1) does not need to be electrically connected to the heating element (30), the problem of the difficulty of cleaning due to the electrical connection is also solved.
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Description

[Technical Field]

[0001] The present invention relates to the field of atomization devices, and in particular to a computer program product, a storage medium, a control device, an aerosol generating device and a control method thereof. [Background technology]

[0002] Aerosol generating devices are devices that can atomize an aerosol-generating substrate in an atomizer, and are attracting increasing interest and support from people due to their advantages such as safety, convenience, health, and environmental friendliness during use.

[0003] Conventional aerosol generating devices typically use a temperature sensor to detect the temperature of the aerosol generating substrate. However, this method requires space for the temperature sensor in the structure, which limits the structural design. Furthermore, electrical isolation from the heating element is impossible, making cleaning difficult due to the electrical connection. Summary of the Invention [Problem to be solved by the invention]

[0004] The technical problem that the present invention aims to solve is that the aerosol generating devices of the prior art are restricted in their structural design and are difficult to clean. [Means for solving the problem]

[0005] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0006] The aerosol generating device includes a chamber for accommodating an aerosol-generating substrate and a heating element for heating the aerosol-generating substrate, the heating element having a magnetic temperature characteristic. The aerosol generating device also includes a resonant module including a detection coil, at least a portion of which is located within the magnetic field of the heating element, and a control module for controlling the resonant module to operate in a resonant state, determining the resonant frequency of the resonant module based on a voltage signal from the detection coil, and determining a corresponding detection result based on the resonant frequency.

[0007] Preferably, the corresponding detection results include the temperature of the heating element, whether or not an inhalation action has occurred, and whether or not an insertion action of the aerosol-generating substrate has occurred.

[0008] Preferably, the detection coil is a spiral spring coil, and the spiral spring coil is disposed within the receiving chamber.

[0009] Preferably, the detection coil is a spiral flat coil, and the spiral flat coil is provided on the outer periphery of the containing chamber.

[0010] Preferably, the heating element is a flat rectangular parallelepiped, and the detection coil includes a plurality of the spiral flat coils connected in series, and the spiral flat coils are distributed around the periphery of the containing chamber.

[0011] Preferably, the resonant module further includes a first switching transistor, a second switching transistor, a fifth switching transistor, a first diode, a second diode, a first capacitor, a first inductor, and a second inductor. A control terminal of the fifth switching transistor is connected to a first output terminal of the control module. A first terminal of the fifth switching transistor is connected to an output terminal of a power supply. A second terminal of the fifth switching transistor is connected to a control terminal of the first switching transistor, a control terminal of the second switching transistor, an anode of the first diode, and an anode of the second diode, respectively. The first terminal of the first switching transistor and the first terminal of the second switching transistor are each grounded. The second terminal of the first switching transistor is connected to a cathode of the first diode, a first terminal of the detection coil, a first terminal of the first capacitor, and a first terminal of the first inductor, respectively. The second terminal of the second switching transistor is connected to a cathode of the second diode, a second terminal of the detection coil, a second terminal of the first capacitor, and a first terminal of the second inductor, respectively. A second terminal of the first inductor and a second terminal of the second inductor are respectively connected to a second terminal of the fifth switching transistor.

[0012] Preferably, the control module includes a conversion unit used to acquire a voltage signal of the detection coil and convert the voltage signal into a pulse signal, and a main control unit used to determine the resonant frequency of the resonant module based on the pulse signal and determine the corresponding detection result based on the resonant frequency.

[0013] Preferably, the conversion unit includes an operational amplifier and a first resistor, a second resistor, a third resistor, and a fourth resistor. The inverting input terminal of the operational amplifier is connected to one end of the detection coil through the second resistor, and the non-inverting input terminal of the operational amplifier is connected to the other end of the detection coil through the third resistor. The first resistor is connected between the inverting input terminal of the operational amplifier and ground. The fourth resistor is connected between the non-inverting input terminal of the operational amplifier and ground.

[0014] Preferably, the heating module further includes a heating coil disposed within the storage chamber.

[0015] The control module is further used to control the heating module to generate an alternating current in the heating coil and electromagnetically heat the heating element in the containing chamber.

[0016] Preferably, the heating module further includes a third switching transistor, a fourth switching transistor, a second capacitor, and a third capacitor. A first terminal of the third switching transistor is connected to the second terminal of the fourth switching transistor. The second terminals of the third switching transistor are respectively connected to the output terminals of a power supply. The first terminal of the fourth switching transistor is grounded. A control terminal of the third switching transistor is connected to the second output terminal of the control module. A control terminal of the fourth switching transistor is connected to the third output terminal of the control module. The second capacitor and the third capacitor are connected in series between the output terminal of a power supply and ground. A first terminal of the heating coil is connected to the first terminal of the third switching transistor. A second terminal of the heating coil is connected to the connection point between the second capacitor and the third capacitor.

[0017] Preferably, when performing power control for the heating element, the control module controls the heating module to generate an alternating current based on the temperature of the heating element during the heating period of each cycle, and controls the resonant module to operate in a resonant state during the non-heating period of each cycle, and is used to determine the temperature of the heating element based on the resonant frequency of the resonant module.

[0018] Preferably, the control module further controls the resonance module to operate in a resonant state by waking up at a predetermined timing in a standby state, and is used to determine whether or not an insertion operation of an aerosol-generating substrate has occurred based on the resonant frequency of the resonance module.

[0019] The present invention further comprises a method for controlling an aerosol generating device, the method comprising:

[0020] The resonant module is controlled to operate in a resonant state, the resonant module includes a detection coil, and at least a portion of the detection coil is located within a magnetic field of a heating element having a magnetic temperature characteristic.

[0021] The resonant frequency of the resonant module is determined based on the voltage signal of the detection coil.

[0022] A corresponding detection result is identified based on the resonant frequency.

[0023] Preferably, determining the resonant frequency of the resonant module based on the voltage signal of the detection coil includes:

[0024] The voltage signal of the detection coil is converted into a pulse signal.

[0025] The resonant frequency of the resonant module is determined based on the pulse signal.

[0026] The present invention further provides a control device including a memory and a processor, wherein a computer program is stored in the memory, and the processor, when executing the computer program, performs the steps of the above-described method for controlling an aerosol generating device.

[0027] The present invention further comprises a storage medium containing computer instructions that, when executed on a processor, cause the processor to perform the above-described method for controlling an aerosol generating device.

[0028] The present invention further comprises a computer program product, which, when running on a computer, causes the computer to execute the above-described method for controlling an aerosol generating device. [Effects of the Invention]

[0029] The technical solution of the present invention can realize the corresponding detection function without providing a temperature sensor, thereby solving the problem of restricting the structural design of the aerosol generating device, and also solves the problem of difficulty in cleaning due to the electrical connection, since the detection coil does not need to be electrically connected to the heating element. [Brief explanation of the drawings]

[0030] [Figure 1] FIG. 1 is a logical structural diagram of a first embodiment of the aerosol generating device of the present invention. [Figure 2] FIG. 2 is a schematic structural diagram of Example 2 of the aerosol generating device of the present invention. [Figure 3] FIG. 3 is a circuit diagram of a first embodiment of the resonance module and conversion unit in the aerosol generating device of the present invention. [Figure 4] FIG. 4 is a circuit diagram of a heating module in the aerosol generating device according to the first embodiment of the present invention. [Figure 5] FIG. 5 is a graph of resonant frequency versus time in one embodiment of the present invention. [Figure 6]FIG. 6 is a flowchart of a first embodiment of the method for controlling the aerosol generating device according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] The following describes the technical solutions of the embodiments of the present invention clearly and concisely, with reference to the accompanying drawings in the embodiments of the present invention. It goes without saying that the described embodiments are only some of the embodiments of the present invention, and do not represent all of the embodiments. All other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without any creative work are also within the scope of protection of the present invention.

[0032] FIG. 1 is a logical structural diagram of a first embodiment of an aerosol-generating device according to the present invention. First, it should be noted that the aerosol-generating device includes a storage chamber (not shown) and a heating element 30. The storage chamber is used to store an aerosol-generating substrate 40, and the heating element 30 is used to heat the aerosol-generating substrate 40. For example, the heating element 30 can be embedded in the aerosol-generating substrate 40. The heating element 30 is a heating element with magnetic temperature characteristics, i.e., an alloy with a specific Curie temperature. Below a specific Curie temperature (e.g., 420°C), the magnetic induction value of the heating element decreases with increasing temperature, and exhibits an approximately linear relationship. The material of the heating element 30 can be, for example, an iron-nickel-chromium alloy.

[0033] 1, the aerosol generating device of this embodiment further includes a control module 11, a resonance module 12, and a heating module 13. The heating module 13 includes a heating coil L2. The heating coil L2 is covered in a storage chamber. The resonance module 12 includes a detection coil L1. At least a portion of the detection coil L1 is located within the magnetic field of the heating element 30. In this embodiment, the detection coil L1 and the heating coil L2 are both spiral spring coils. The detection coil L1 and the heating coil L2 are both covered in a storage chamber, and may be, for example, coaxially stacked. Preferably, the heating coil L2 can be installed outside the detection coil L1.

[0034] The control module 11 is connected to the resonance module 12 and the heating module 13. The control module 11 controls the heating module 13 to generate an AC current in the heating coil L2, thereby electromagnetically heating the heating element 30 in the chamber, and also controls the resonance module 12 to operate in a resonant state. This minimizes induction heating during detection, significantly reducing the current during actual operation. The resonant frequency of the resonance module 12 is determined based on the voltage signal from the detection coil L1, and corresponding detection results, including the temperature of the heating element, whether or not an inhalation action has occurred, and whether or not an aerosol-generating substrate has been inserted, are determined based on the resonant frequency.

[0035] In this embodiment, the temperature of the heating element 30 changes during normal operation of the aerosol generator. For example, even within one control cycle, the temperature differs between heating and non-heating periods, and between inhalation and non-inhalation. Furthermore, changes in the temperature of the heating element 30 cause changes in its own magnetic induction value. Furthermore, the magnetic induction value of the heating element 30 differs depending on whether an aerosol-generating substrate is inserted into the aerosol generator or not. When the magnetic induction value of the heating element 30 changes, at least a portion of the detection coil L1 is positioned within the magnetic field of the heating element 30, causing a change in the resonant frequency of the resonant module 12. This change in the frequency of the voltage of the detection coil L1 can be considered to represent the corresponding detection result in the aerosol generator. Therefore, the control module 11 can identify the corresponding detection result based on the resonant frequency. This detection method eliminates the need for a temperature sensor, thereby resolving the problem of constraints on the structural design of the aerosol generator. Furthermore, since the detection coil L1 does not need to be electrically connected to the heating element, the difficulty of cleaning caused by the electrical connection is also resolved.In addition, by separating the resonant module and the heating module, flexible design of the heating module can be realized.

[0036] It should also be noted that in other embodiments, other methods may be selected to heat the heating element 30, such as direct heating.

[0037] FIG. 2 is a schematic structural diagram of a second embodiment of the aerosol generating device of the present invention. Compared to the embodiment shown in FIG. 1, this embodiment differs only in the following respects: the heating element 30 is a flat rectangular parallelepiped. The detection coil includes four spiral flat coils L11, L12, L13, and L14 connected in series. The four spiral flat coils L11, L12, L13, and L14 are distributed around the periphery of the heating element 30, i.e., around the periphery of the storage chamber. The detection coil is arranged in a manner that allows detection on multiple surfaces. It should be noted that this embodiment is characterized by the fact that the heating element 30 is a flat rectangular parallelepiped, and the detection coil is also a spiral flat coil. Furthermore, in actual application, the heating element 30 may rotate around its vertical axis after inserting or removing the aerosol-generating substrate. This may change the projected shape in the horizontal plane. Furthermore, there is a possibility that the flat plane of the heating element 30 may be exactly perpendicular or nearly perpendicular to the flat plane of the spiral coil. In such a case, the effect on the resonant frequency of the resonant module may be reduced, resulting in inaccurate detection results. To avoid such a situation, in this embodiment, multiple spiral coils are connected in series to each other around the outer periphery of the heating element 30. This ensures that a sufficient portion of the spiral coil enters the magnetic field of the heating element 30 regardless of how the heating element rotates around its longitudinal axis, thereby improving detection accuracy. It should be understood that the number of spiral coils is not limited in the present invention. In other embodiments, the number of spiral coils may be two, three, etc. Naturally, in other embodiments, when the heating element is a cylinder or a rectangular parallelepiped with a square cross section, only one spiral coil may be provided.

[0038] Furthermore, the control module 11 includes a conversion unit and a main control unit. The conversion unit is used to obtain a voltage signal of the detection coil and convert the voltage signal into a pulse signal. The main control unit is used to determine the resonant frequency of the resonant module based on the pulse signal and determine a corresponding detection result based on the resonant frequency.

[0039] FIG. 3 is a circuit diagram of a first embodiment of the resonant module and conversion unit in the aerosol generating device of the present invention. In this embodiment, the resonant module not only includes a detection coil L1, but also a first switching transistor Q1, a second switching transistor Q2, a fifth switching transistor Q5, a first diode D1, a second diode D2, a first capacitor C1, a first inductor L3, and a second inductor L4. The first switching transistor Q1, the second switching transistor Q2, and the fifth switching transistor Q5 are all MOSFETs. The resonant module also includes resistors R1, R2, R3, R4, R11, and a capacitor C4. The gate of the fifth switching transistor Q5 is connected to the first output terminal (VCC2_EN) of the main control unit, and the source of the fifth switching transistor Q5 is connected to the output terminal (VCC) of the power supply. The resistor R11 is connected between the gate and source of the fifth switching transistor Q5, and the capacitor C4 is connected between the drain of the fifth switching transistor Q5 and ground. The gate of the first switching transistor Q1 is connected to the drain (VCC2) of the fifth switching transistor Q5 through a resistor R1. The gate of the second switching transistor Q2 is connected to the drain (VCC2) of the fifth switching transistor Q5 through a resistor R2. The source of the first switching transistor Q1 and the source of the second switching transistor Q2 are both grounded. A resistor R3 is connected between the gate and source of the first switching transistor Q1, and a resistor R4 is connected between the gate and source of the second switching transistor Q2. The drain of the first switching transistor Q1 is connected to the cathode of the first diode D1, the first terminal of the detection coil L1, the first terminal of the first capacitor C1, and the first terminal of the first inductor L3, respectively. The drain of the second switching transistor Q2 is connected to the cathode of the second diode D2, the second terminal of the detection coil L1, the second terminal of the first capacitor C1, and the first terminal of the second inductor L4, respectively. The second terminal of the first inductor L3 and the second terminal of the second inductor L4 are connected to the drain of the fifth switching transistor Q5.The anode of the first diode D1 is connected to the gate of the second switching transistor Q2, and the anode of the second diode D2 is connected to the gate of the first switching transistor Q1. It should be understood that the resistors R1 and R2 provide current limiting, the resistors R3, R4, and R11 provide isolation, and the capacitor C4 provides voltage stabilization, but these may be omitted in other embodiments.

[0040] In this embodiment, the conversion unit includes an operational amplifier U1B, a first resistor R5, a second resistor R6, a third resistor R8, and a fourth resistor R10, as well as resistors R7 and R9. The inverting input terminal of the operational amplifier U1B is connected to one end of the detection coil L1 through the second resistor R6, and the non-inverting input terminal of the operational amplifier U1B is connected to the other end of the detection coil L1 through the third resistor R8. The first resistor R5 is connected between the inverting input terminal of the operational amplifier U1B and ground, and the fourth resistor R10 is connected between the non-inverting input terminal of the operational amplifier U1B and ground. The resistors R7 and R9 are connected in series between the output terminal of the operational amplifier U1B and ground. The junction of the resistors R7 and R9 is the output terminal of the conversion unit.

[0041] FIG. 4 is a circuit diagram of a heating module in the aerosol generating device of the present invention according to a first embodiment. The heating module of this embodiment includes a third switching transistor Q3, a fourth switching transistor Q4, a second capacitor C2, and a third capacitor C3. In this embodiment, the third switching transistor Q3 and the fourth switching transistor Q4 are both MOSFETs. The source of the third switching transistor Q3 is connected to the drain of the fourth switching transistor Q4, and the drain of the third switching transistor Q3 is connected to the output terminal (VCC1) of the power supply. The source of the fourth switching transistor Q4 is grounded. The gate of the third switching transistor Q3 is connected to the second output terminal (PWM-H) of the control module, and the gate of the fourth switching transistor Q4 is connected to the third output terminal (PWM-L) of the control module. The second capacitor C2 and the third capacitor C3 are connected in series between the output terminal of the power supply and ground. The first terminal of the heating coil L2 is connected to the source of the third switching transistor Q3, and the second terminal of the heating coil L2 is connected to the junction between the second capacitor C2 and the third capacitor C3.

[0042] 3 and 4, the third switching transistor Q3, the fourth switching transistor Q4, the heating coil L2, the second capacitor C2, and the third capacitor C3 constitute a controllable heating module. When the heating of the heating element needs to be controlled, the main control unit of the control module controls the third switching transistor Q3 and the fourth switching transistor Q4 to alternately conduct through PWM-H and PWM-L, allowing AC current to be generated in the heating coil L2, thereby achieving controllable heating of the heating element.

[0043] The detection coil L1, the first capacitor C1, and the associated circuitry constitute a resonant module, while the operational amplifier U1B and the associated circuitry constitute a conversion unit. When a corresponding detection is required, the main control unit of the control module controls the fifth switching transistor Q5 to conduct through VCC2_EN. At this time, VCC2 goes high, causing the detection coil L1 and the first capacitor C1 to resonate, generating an oscillating voltage signal across the detection coil L1. This voltage signal is sent to the operational amplifier U1B. The operational amplifier U1B converts this oscillating voltage signal into a pulse signal suitable for frequency measurement. After achieving level matching through resistors R7 and R9, the output signal Fre is sent to the main control unit of the control module. The main control unit then obtains the current resonant frequency characteristics of the resonant module through frequency measurement and performs corresponding detection based on changes in the resonant frequency characteristics. Multiple detections can also be achieved using changes in the resonant frequency characteristics.

[0044] In an alternative embodiment, the temperature of a heating element is detected by utilizing changes in the resonant frequency characteristics. Specifically, when controlling the power of the heating element, the control module controls the heating module to generate an AC current based on the temperature of the heating element during the heating period of each cycle. Furthermore, during the non-heating period of each cycle, the control module controls the resonant module to operate in a resonant state and determines the temperature of the heating element based on the resonant frequency of the resonant module. In this embodiment, the control module controls the heating element to generate induction heat by applying an AC current to the heating coil for a specific period (Tm). The heating element has a distinct magnetic temperature characteristic under a specific temperature condition (e.g., between 150 and 420°C). Thereafter, the control module controls the operation of the resonant module for another specific period (Tn). Tm and Tn are two non-overlapping periods. Since changes in the frequency characteristics of the resonant module can feed back changes in the temperature of the heating element, the control module can obtain the peak frequency characteristics of the resonant module by detecting the voltage of the detection coil, determine changes in the temperature of the heating element based on changes in the frequency characteristics, and adjust the AC current of the heating coil based on the changes in the temperature of the heating element. Furthermore, since the heating method is an induction heating method, it has a large conversion power, and since the resonant module operates in a resonant state, there is almost no obvious induction heating, and the operating current during actual operation is very small.

[0045] In an alternative embodiment, the change in the resonant frequency signature is used to detect inhalation. Specifically, when an inhalation airflow passes through the aerosol-generating substrate, a distinct temperature change occurs in the heating element. Therefore, a distinct jump in the resonant frequency signature can be used to detect inhalation and even count the number of inhalations.

[0046] In an alternative embodiment, the insertion of an aerosol-generating substrate is detected by utilizing a change in the resonant frequency characteristics. Specifically, the operating current of the resonant module is very small. Therefore, when the aerosol generating device is in standby mode, the control module wakes up at a predetermined timing using the "VCC2_EN" signal and detects a change in the operating frequency of the resonant module, thereby detecting the insertion of an aerosol-generating substrate.

[0047] In other words, combining Figure 5, during the period from 0 to t1, the aerosol-generating substrate is not inserted, and the detected resonant frequency is f0. At time t1, the aerosol-generating substrate is inserted, and the detected resonant frequency is f1. During the period from t1 to t2, preheating begins, and the detected resonant frequency gradually increases to f2. f2 is a frequency corresponding to a predetermined temperature point. Furthermore, by controlling the heating, the detected resonant frequency is maintained at that frequency point. During the period from t3 to t4, the user inhales once, and the temperature of the heating element decreases, and the detected resonant frequency decreases from f2 to f3. Subsequently, by controlling the heating, the resonant frequency increases to f2. Similarly, during the period from t5 to t6, the user inhales once again, and the detected resonant frequency decreases from f2 to f4. Subsequently, by controlling the heating again, the resonant frequency increases to f2. Furthermore, the amount of frequency decrease varies depending on the inhalation depth. For example, since f4 is smaller than f3, the inhalation depth during the second inhalation is greater than the inhalation depth during the first inhalation.

[0048] 6 is a flow chart of a first embodiment of the control method for an aerosol generating device according to the present invention. The control method of this embodiment is applied to a control module. In combination with FIG. 1, the control method includes:

[0049] Step S10: Control a resonant module to operate in a resonant state, the resonant module including a detection coil, at least a portion of which is located within the magnetic field of a heating element, the heating element having a magnetic temperature characteristic.

[0050] Step S20: Identify the resonant frequency of the resonant module based on the voltage signal of the detection coil.

[0051] Step S30: Identify the corresponding detection result based on the resonant frequency, including, for example, the temperature of the heating element, whether an inhalation action has occurred, and whether an insertion action of the aerosol-generating substrate has occurred.

[0052] Furthermore, step S20 includes converting the voltage signal of the detection coil into a pulse signal, and determining the resonant frequency of the resonant module based on the pulse signal.

[0053] The present invention further provides a control device including a memory and a processor, wherein a computer program is stored in the memory, and the processor, when executing the computer program, performs the steps of the above-described method for controlling an aerosol generating device.

[0054] The present invention further comprises a storage medium containing computer instructions that, when executed on a processor, cause the processor to perform the above-described method for controlling an aerosol generating device.

[0055] The present invention further comprises a computer program product, which, when running on a computer, causes the computer to execute the above-described method for controlling an aerosol generating device.

[0056] The above description is merely a preferred embodiment of the present invention and does not limit the present invention. Those skilled in the art may have various modifications and variations to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An aerosol generating device including a chamber for accommodating an aerosol-generating substrate and a heating element for heating the aerosol-generating substrate, the heating element is a heating element having magnetic temperature characteristics, The aerosol generating device comprises: a resonant module having a detection coil, at least a portion of which is located within the magnetic field of the heating element; a control module used to control the resonance module to operate in a resonance state, and to identify a resonance frequency of the resonance module based on a voltage signal of the detection coil, and to identify a corresponding detection result based on the resonance frequency; a heating module that heats the heating element, The resonant module further includes a first switching transistor (Q1), a second switching transistor (Q2), a fifth switching transistor (Q5), a first diode (D1), a second diode (D2), a first capacitor (C1), a first inductor (L3), a second inductor (L4), a first resistor (R1) and a second resistor (R2), a control terminal of the fifth switching transistor (Q5) is connected to a first output terminal of the control module, a first terminal of the fifth switching transistor (Q5) is connected to an output terminal of a power supply, the control terminal of the first switching transistor (Q1) and the anode of the first diode (D1) are connected to a second terminal of the fifth switching transistor (Q5) through the first resistor (R1), and the control terminal of the second switching transistor (Q2) and the anode of the second diode (D2) are connected to the fifth switching transistor (Q5) through the second resistor (R2). the second terminal of the second switching transistor (Q2) is connected to the cathode of the second diode (D2), the second terminal of the detection coil (L1), the second terminal of the first capacitor (C1) and the first terminal of the first inductor (L3), respectively; the second terminal of the second switching transistor (Q2) is connected to the cathode of the second diode (D2), the second terminal of the detection coil (L1), the second terminal of the first capacitor (C1) and the first terminal of the second inductor (L4), respectively; and the second terminal of the first inductor (L3) and the second terminal of the second inductor (L4) are connected to the second terminal of the fifth switching transistor (Q5),

2. The aerosol generating device according to claim 1 , wherein the corresponding detection results include the temperature of the heating element, whether an inhalation action has occurred, and whether an insertion action of the aerosol generating substrate has occurred.

3. 2. The aerosol generating device according to claim 1, wherein the detection coil is a spiral spring coil, and the spiral spring coil is disposed inside the containing chamber.

4. 2. The aerosol generating device according to claim 1, wherein the detection coil is a spiral flat coil, and the spiral flat coil is provided on the outer periphery of the storage chamber.

5. The aerosol generating device described in claim 4, characterized in that the heating element is a flat rectangular parallelepiped, the detection coil includes a plurality of spiral flat coils connected in series, and the plurality of spiral flat coils are distributed around the outer periphery of the storage chamber.

6. The control module a conversion unit used for acquiring a voltage signal of the detection coil and converting the voltage signal into a pulse signal; The aerosol generating device described in claim 1, characterized in that it includes a main control unit used to identify the resonant frequency of the resonant module based on the pulse signal and to identify the corresponding detection result based on the resonant frequency.

7. The aerosol generating device described in claim 6, characterized in that the conversion unit includes an operational amplifier (U1B), a first resistor (R5), a second resistor (R6), a third resistor (R8), and a fourth resistor (R10), wherein the inverting input terminal of the operational amplifier (U1B) is connected to one end of the detection coil (L1) through the second resistor (R6), the non-inverting input terminal of the operational amplifier (U1B) is connected to the other end of the detection coil (L1) through the third resistor (R8), the first resistor (R5) is connected between the inverting input terminal of the operational amplifier (U1B) and ground, and the fourth resistor (R10) is connected between the non-inverting input terminal of the operational amplifier (U1B) and ground.

8. The heating module includes a heating coil disposed within the chamber; and The aerosol generating device according to claim 1, characterized in that the control module is further used to control the heating module to generate an alternating current in the heating coil and electromagnetically heat the heating element in the storage chamber.

9. The heating module further includes a third switching transistor (Q3), a fourth switching transistor (Q4), a second capacitor (C2), and a third capacitor (C3), wherein a first terminal of the third switching transistor (Q3) is connected to the second terminal of the fourth switching transistor (Q4), the second terminal of the third switching transistor (Q3) is connected to an output terminal of a power supply, the first terminal of the fourth switching transistor (Q4) is grounded, a control terminal of the third switching transistor (Q3) is connected to the second output terminal of the control module, and a control terminal of the fourth switching transistor (Q4) is connected to the third output terminal of the control module, the second capacitor (C2) and the third capacitor (C3) are connected in series between the output terminal of the power supply and ground, a first terminal of the heating coil is connected to the first terminal of the third switching transistor (Q3), and a second terminal of the heating coil is connected to a connection point between the second capacitor (C2) and the third capacitor (C3).

10. The aerosol generating device described in claim 8, characterized in that when performing power control for the heating element, the control module controls the heating module to generate an alternating current based on the temperature of the heating element during the heating period of each cycle, and controls the resonance module to operate in a resonant state during the non-heating period of each cycle, and is used to determine the temperature of the heating element based on the resonant frequency of the resonance module.

11. The aerosol generating device described in claim 1, characterized in that the control module is further used to control the resonance module to operate in a resonant state by waking up at a predetermined timing in a standby state, and to determine whether an insertion operation of an aerosol generating substrate has occurred based on the resonant frequency of the resonance module.

12. 2. The method for controlling an aerosol generating device according to claim 1, Controlling a resonance module to operate in a resonance state, the resonance module including a detection coil, and at least a portion of the detection coil being located within a magnetic field of a heating element, the heating element having a magnetic temperature characteristic; Identifying a resonant frequency of the resonant module based on the voltage signal of the detection coil; Identifying a corresponding detection result based on the resonant frequency. A control method comprising:

13. Identifying the resonant frequency of the resonant module based on the voltage signal of the detection coil includes: converting the voltage signal of the detection coil into a pulse signal; The method for controlling an aerosol generating device according to claim 12, further comprising identifying a resonance frequency of the resonance module based on the pulse signal.

14. A control device including a memory and a processor, the memory storing a computer program, The control device, wherein the processor, when executing the computer program, implements the steps of the method for controlling an aerosol generating device according to claim 12 or 13.

15. A storage medium containing computer instructions, the computer instructions running on a processor causing the processor to execute the method for controlling an aerosol generating device according to claim 12 or 13.

16. A computer program product, which, when run on a computer, causes the computer to execute the method for controlling an aerosol generating device according to claim 12 or 13.

17. An aerosol generating device including a chamber for accommodating an aerosol-generating substrate and a heating element for heating the aerosol-generating substrate, the heating element is a heating element having magnetic temperature characteristics, The aerosol generating device comprises: a resonant module having a detection coil, at least a portion of which is located within the magnetic field of the heating element; a control module used to control the resonance module to operate in a resonance state, to identify a resonance frequency of the resonance module based on a voltage signal of the detection coil, and to identify a corresponding detection result based on the resonance frequency; The resonant module further includes a first switching transistor (Q1), a second switching transistor (Q2), a fifth switching transistor (Q5), a first diode (D1), a second diode (D2), a first capacitor (C1), a first inductor (L3), a second inductor (L4), a first resistor (R1) and a second resistor (R2), a control terminal of the fifth switching transistor (Q5) is connected to a first output terminal of the control module, a first terminal of the fifth switching transistor (Q5) is connected to an output terminal of a power supply, the control terminal of the first switching transistor (Q1) and the anode of the first diode (D1) are connected to a second terminal of the fifth switching transistor (Q5) through the first resistor (R1), and the control terminal of the second switching transistor (Q2) and the anode of the second diode (D2) are connected to the fifth switching transistor (Q5) through the second resistor (R2). the second terminal of the second switching transistor (Q2) is connected to the cathode of the second diode (D2), the second terminal of the detection coil (L1), the second terminal of the first capacitor (C1) and the first terminal of the first inductor (L3), respectively; the second terminal of the second switching transistor (Q2) is connected to the cathode of the second diode (D2), the second terminal of the detection coil (L1), the second terminal of the first capacitor (C1) and the first terminal of the second inductor (L4), respectively; and the second terminal of the first inductor (L3) and the second terminal of the second inductor (L4) are connected to the second terminal of the fifth switching transistor (Q5),

Citation Information

Patent Citations

  • Temperature determination

    JP2020516014A

  • Device, system, and method for sensing temperature in an induction heating system

    JP2020526865A

  • JPP6923771B

  • Apparatus for an aerosol generating device

    WO2020260884A1