CN113907424A - Aerosol generating device and control method thereof - Google Patents
Aerosol generating device and control method thereof Download PDFInfo
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- CN113907424A CN113907424A CN202111044259.2A CN202111044259A CN113907424A CN 113907424 A CN113907424 A CN 113907424A CN 202111044259 A CN202111044259 A CN 202111044259A CN 113907424 A CN113907424 A CN 113907424A
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- aerosol
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
- A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/53—Monitoring, e.g. fault detection
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
- A24F40/50—Control or monitoring
- A24F40/57—Temperature control
Abstract
The invention discloses an aerosol generating device and a control method thereof, the aerosol generating device comprises a containing cavity for containing an aerosol generating substrate and a heating element for heating the aerosol generating substrate, the heating element is a heating element with magnetic temperature characteristic, and the aerosol generating device also comprises: the resonance module comprises a detection coil, and at least one part of the detection coil is positioned in the magnetic field of the heating body; and the control module is used for controlling the resonance module to work in a resonance state, determining the resonance frequency of the resonance module according to the voltage signal of the detection coil, and determining a corresponding detection result according to the resonance frequency. By implementing the technical scheme of the invention, the problem of limited structural design of the aerosol generating device is solved, and the problem of difficult cleaning caused by electrical connection is also solved.
Description
Technical Field
The invention relates to the field of atomization equipment, in particular to an aerosol generating device and a control method thereof.
Background
Aerosol generating devices are devices which are capable of atomising an aerosol-forming substrate in an atomiser and are of increasing interest and favour because of their advantages of being safe, convenient, healthy and environmentally friendly to use.
In the conventional aerosol-generating device, a temperature sensor is generally used to detect the temperature of the aerosol-generating substrate, but this method has a problem of limited structural design because a space needs to be provided for the temperature sensor in the structure, and also has a problem of difficulty in cleaning due to electrical connection because electrical separation from the heating element cannot be achieved.
Disclosure of Invention
The invention aims to solve the technical problems of limited structural design and difficult cleaning in the prior art, and provides an aerosol generating device and a control method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: an aerosol-generating device is constructed comprising a receiving chamber for receiving an aerosol-generating substrate and a heating element for heating the aerosol-generating substrate, the heating element being a heating element having magnetic temperature characteristics, and the aerosol-generating device comprising:
the resonance module comprises a detection coil, and at least one part of the detection coil is positioned in the magnetic field of the heating body;
and the control module is used for controlling the resonance module to work in a resonance state, determining the resonance frequency of the resonance module according to the voltage signal of the detection coil, and determining a corresponding detection result according to the resonance frequency.
Preferably, the respective detection result comprises a temperature of the heating element, whether a suction action has taken place, whether an insertion action of the aerosol-generating substrate has taken place.
Preferably, the detection coil is a spiral spring coil, and the spiral spring coil is sleeved on the accommodating cavity.
Preferably, the detection coil is a spiral flat coil, and the spiral flat coil is arranged on the periphery of the accommodating cavity.
Preferably, the heat-generating body is flat cuboid, the detection coil includes a plurality of series connection spiral flat coil, and, it is a plurality of spiral flat coil dispersion sets up the periphery in holding chamber.
Preferably, the resonance module further includes a first switch tube, a second switch tube, a fifth switch tube, a first diode, a second diode, a first capacitor, a first inductor, and a second inductor, wherein a control end of the fifth switch tube is connected to a first output end of the control module, a first end of the fifth switch tube is connected to an output end of the power supply, a second end of the fifth switch tube is connected to a control end of the first switch tube, a control end of the second switch tube, an anode of the first diode, and an anode of the second diode, a first end of the first switch tube and a first end of the second switch tube are grounded, a second end of the first switch tube is connected to a cathode of the first diode, a first end of the detection coil, a first end of the first capacitor, and a first end of the first inductor, and a second end of the second switch tube is connected to a cathode of the second diode, a first end of the detection coil, a first end of the first capacitor, and a first end of the first inductor, respectively, The second end of the first inductor and the second end of the second inductor are respectively connected with the second end of the fifth switch tube.
Preferably, the control module comprises:
the conversion unit is used for acquiring a voltage signal of the detection coil and converting the voltage signal into a pulse signal;
and the main control unit is used for determining the resonant frequency of the resonant module according to the pulse signal and determining a corresponding detection result according to the resonant frequency.
Preferably, the conversion unit includes: the detection coil comprises an operational amplifier, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein the inverting input end of the operational amplifier is connected with one end of the detection coil through the second resistor, the non-inverting input end of the operational amplifier is connected with the other end of the detection coil through the third resistor, the first resistor is connected between the inverting input end of the operational amplifier and the ground, and the fourth resistor is connected between the non-inverting input end of the operational amplifier and the ground.
Preferably, the heating device also comprises a heating module, the heating module comprises a heating coil sleeved on the accommodating cavity, and moreover,
the control module is further used for controlling the heating module to enable the heating coil to generate alternating current so as to electromagnetically heat the heating body in the accommodating cavity.
Preferably, the heating module further comprises: third switch tube, fourth switch tube, second electric capacity and third electric capacity, wherein, the first end of third switch tube is connected the second end of fourth switch tube, the output of power is connected respectively to the second end of third switch tube, the first end ground connection of fourth switch tube, the control end of third switch tube is connected control module's second output, the control end of fourth switch tube is connected control module's third output, the second electric capacity with the third electric capacity is established ties between the output of power and ground, the first end of heating coil is connected the first end of third switch tube, the second end of heating coil connect in the second electric capacity with the tie point of third electric capacity.
Preferably, the control module is configured to control the heating module to generate an alternating current according to the temperature of the heating element in the heating time period of each cycle when the power of the heating element is controlled; and controlling the resonance module to work in a resonance state in the non-heating time period of each cycle, and determining the temperature of the heating body according to the resonance frequency of the resonance module.
Preferably, the control module is further configured to control the resonant module to operate in a resonant state by timed wake-up in a standby state, and to determine whether an insertion of an aerosol-generating substrate has occurred based on a resonant frequency of the resonant module.
The invention also constitutes a method of controlling an aerosol-generating device, comprising:
controlling a resonance module to work in a resonance state, wherein the resonance module comprises a detection coil, at least one part of the detection coil is positioned in a magnetic field of a heating element, and the heating element is a heating element with a magnetic temperature characteristic;
determining the resonant frequency of the resonant module according to the voltage signal of the detection coil;
and determining a corresponding detection result according to the resonance frequency.
Preferably, determining the resonant frequency of the resonance module according to the voltage signal of the detection coil includes:
converting the voltage signal of the detection coil into a pulse signal;
and determining the resonant frequency of the resonant module according to the pulse signal.
The invention also constitutes a control device comprising a memory storing a computer program and a processor implementing the steps of the method of controlling an aerosol-generating device as described above when the computer program is executed by the processor.
The invention also constitutes a computer storage medium comprising computer instructions which, when run on a processor, cause the processor to carry out a method of controlling an aerosol-generating device as described above.
The invention also constitutes a computer program product for causing a computer to perform the method of controlling an aerosol-generating device as described above, when the computer program product is run on the computer.
By implementing the technical scheme of the invention, the corresponding detection function can be realized without arranging a temperature sensor, the problem of limited structural design of the aerosol generating device is solved, and the problem of difficult cleaning caused by electrical connection is also solved as the detection coil does not need to be electrically connected with the heating body.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
figure 1 is a logical block diagram of a first embodiment of an aerosol-generating device according to the invention;
figure 2 is a schematic structural view of a second embodiment of an aerosol-generating device according to the invention;
figure 3 is a circuit diagram of a first embodiment of a resonance module and a conversion unit in an aerosol-generating device according to the invention;
figure 4 is a circuit diagram of a first embodiment of a heating module in an aerosol-generating device according to the invention;
FIG. 5 is a graph of resonant frequency versus time for one embodiment of the present invention;
fig. 6 is a flow chart of a first embodiment of a method of controlling an aerosol-generating device according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a logical block diagram of an aerosol-generating device according to a first embodiment of the present invention, and first illustrates that the aerosol-generating device includes a receiving chamber (not shown) for receiving an aerosol-generating substrate 40, and a heating element 30 for heating the aerosol-generating substrate 40, for example, the heating element 30 may be embedded in the aerosol-generating substrate 40. The heating element 30 is an alloy having a specific Curie point, and its magnetic induction value decreases with an increase in temperature at or below the specific Curie point (for example, 420 ℃ C.), and is in a nearly linear relationship. The material of the heating element 30 may be, for example, iron-nickel-chromium alloy.
With reference to fig. 1, the aerosol-generating device of this embodiment further includes a control module 11, a resonance module 12, and a heating module 13, and the heating module 13 includes a heating coil L2, the heating coil L2 is sleeved on the accommodating cavity; the resonance module 12 includes a detection coil L1, at least a part of which is in the magnetic field of the heat-generating body 30, of which detection coil L1. In this embodiment, the detection coil L1 and the heating coil L2 are both spiral spring coils, and the detection coil L1 and the heating coil L2 are both sleeved on the accommodating cavity, and may be coaxially nested, for example, and the heating coil L2 may be preferably disposed outside the detection coil L1.
The control module 11 is respectively connected with the resonance module 12 and the heating module 13, and the control module 11 is used for controlling the heating module 12 to generate an alternating current on the heating coil L2 so as to electromagnetically heat the heating body 30 in the accommodating cavity; and for controlling the operation of the resonator module 12 in a resonant state such that substantially no inductive heating occurs during sensing, and such that substantially little current flows during actual operation, and for determining the resonant frequency of the resonator module 12 from the voltage signal from the sensing coil L1, and for determining a corresponding sensing result from the resonant frequency, including for example the temperature of the heating element, whether a suction action has taken place, or whether an insertion action of the aerosol-generating substrate has taken place.
In this embodiment, the temperature of the heating element 30 may change during normal operation of the aerosol generating device, for example, the temperature of the heating period and the non-heating period in one control cycle may be different; the temperature at which the pumping operation occurs is different from the temperature at which the pumping operation does not occur, and the change in the temperature of the heating element 30 causes a change in the magnetic induction value thereof. In the aerosol-generating device, the magnetic induction value of the heating element 30 is different between the case where the aerosol-generating substrate is inserted and the case where the aerosol-generating substrate is not inserted. Thus, when the magnetic induction value of the heating element 30 changes, at least a part of the detection coil L1 is in the magnetic field of the heating element 30, so that the resonant frequency of the resonant module 12 changes, that is, the frequency of the voltage on the detection coil L1 changes, so that the frequency characteristic can be used as the representation of the corresponding detection result of the aerosol generating device, and the control module 11 can determine the corresponding detection result according to the resonant frequency. In this detection mode, since a temperature sensor is not required, the problem of limitation in the structural design of the aerosol generating device is solved, and since the detection coil L1 is not required to be electrically connected to the heating element, the problem of difficulty in cleaning due to the electrical connection is also solved. In addition, the flexible design of the heating module can be realized through the separation of the resonance module and the heating module.
In addition, in other embodiments, other heating methods, such as a direct heating method, may be used to heat the heating element 30.
Fig. 2 is a schematic structural view of a second embodiment of an aerosol-generating device according to the invention, which differs from the embodiment shown in fig. 1 only in that: the heating body 30 is a flat cuboid, the detection coil comprises four spiral flat coils L11, L12, L13 and L14 which are connected in series, moreover, the four spiral flat coils L11, L12, L13 and L14 are dispersedly arranged at the periphery of the heating body 30, namely at the periphery of the accommodating cavity, and the detection coil is in a multi-surface induction arrangement mode. In this embodiment, since the heating element 30 is a flat rectangular parallelepiped and the detection coil is also a spiral-type flat coil, and in practical use, after the aerosol-generating substrate is inserted and removed, the heating element 30 may be rotated about its vertical axis, that is, the projected shape on the horizontal plane may be changed, and further, the flat surface of the heating element 30 may be just perpendicular or nearly perpendicular to the flat surface of one spiral-type flat coil. In order to avoid such a situation, in this embodiment, a plurality of spiral type flat coils connected in series are provided on the periphery of the heating element 30, and it is possible to ensure that the spiral type flat coils fall into a sufficient portion of the magnetic field of the heating element 30 regardless of how the heating element rotates around its vertical axis, thereby improving the detection accuracy. It should be understood that the present invention is not limited to the number of spiral pancake coils, and in other embodiments, the number of spiral pancake coils can be two, three, etc. Of course, in other embodiments, if the heating element is a cylinder or a rectangular parallelepiped with a square cross section, only one spiral type flat coil may be provided.
Further, the control module 11 includes a conversion unit and a main control unit, wherein the conversion unit is configured to acquire a voltage signal of the detection coil and convert the voltage signal into a pulse signal; the main control unit is used for determining the resonant frequency of the resonant module according to the pulse signal and determining a corresponding detection result according to the resonant frequency.
Fig. 3 is a circuit diagram of a first embodiment of a resonance module and a switching unit in an aerosol-generating device according to the invention, in which the resonance module comprises, in addition to a detection coil L1: the first switch tube Q1, the second switch tube Q2, the fifth switch tube Q5, the first diode D1, the second diode D2, the first capacitor C1, the first inductor L3, and the second inductor L4, and the first switch tube Q1, the second switch tube Q2, and the fifth switch tube Q5 are MOS tubes. In addition, the device also comprises resistors R1, R2, R3, R4, R11 and a capacitor C4. The gate of the fifth switching tube Q5 is connected to the first output terminal (VCC2_ EN) of the main control unit, the source of the fifth switching tube Q5 is connected to the output terminal (VCC) of the power supply, the resistor R11 is connected between the gate and the source of the fifth switching tube Q5, and the capacitor C4 is connected between the drain of the fifth switching tube Q5 and the ground. The gate of the first switch tube Q1 is connected to the drain (VCC2) of the fifth switch tube Q5 through a resistor R1, the gate of the second switch tube Q2 is connected to the drain (VCC2) of the fifth switch tube Q5 through a resistor R2, the source of the first switch tube Q1 and the source of the second switch tube Q2 are grounded, the resistor R3 is connected between the gate and the source of the first switch tube Q1, and the resistor R4 is connected between the gate and the source of the second switch tube Q2. The drain of the first switching tube Q1 is connected to the cathode of the first diode D1, the first end of the detection coil L1, the first end of the first capacitor C1 and the first end of the first inductor L3, respectively. The drain of the second switching tube Q2 is connected to the cathode of the second diode D2, the second end of the detection coil L1, the second end of the first capacitor C1 and the first end of the second inductor L4, respectively, and the second end of the first inductor L3 and the second end of the second inductor L4 are connected to the drain of the fifth switching tube Q5, respectively. The anode of the first diode D1 is connected to the gate of the second switch Q2, and the anode of the second diode D1 is connected to the gate of the first switch Q2. It should be understood that the resistors R1 and R2 function as current limiting, the resistors R3, R4 and R11 function as isolation, and the capacitor C4 functions as voltage stabilizing, which can be omitted in other embodiments.
In this embodiment, the conversion unit includes an operational amplifier U1B, a first resistor R5, a second resistor R6, a third resistor R8, a fourth resistor R10, and further includes resistors R7 and R9. The inverting input end of the operational amplifier U1B is connected with one end of the detection coil L1 through a second resistor R6, the non-inverting input end of the operational amplifier U1B is connected with the other end of the detection coil L1 through a third resistor R8, a first resistor R5 is connected between the inverting input end of the operational amplifier U1B and the ground, a fourth resistor R10 is connected between the non-inverting input end of the operational amplifier U1B and the ground, the resistors R7 and R9 are connected between the output end of the operational amplifier U1B and the ground in series, and the connection point of the resistors R7 and R9 is the output end of the conversion unit.
Fig. 4 is a circuit diagram of a first embodiment of a heating module in an aerosol-generating device of the present invention, the heating module of this embodiment comprising: the third switch tube Q3, the fourth switch tube Q4, the second capacitor C2 and the third capacitor C3, and in this embodiment, the third switch tube Q3 and the fourth switch tube Q4 are MOS tubes. The source of the third switching tube Q3 is connected to the drain of the fourth switching tube Q4, the drain of the third switching tube Q3 is connected to the output terminal (VCC1) of the power supply, the source of the fourth switching tube Q4 is grounded, the gate of the third switching tube Q3 is connected to the second output terminal (PWM-H) of the control module, the gate of the fourth switching tube 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 the ground, the first end of the heating coil L2 is connected to the source of the third switching tube Q3, and the second end of the heating coil L2 is connected to the connection point of the second capacitor C2 and the third capacitor C3.
With reference to fig. 3 and 4, the third switching tube Q3, the fourth switching tube Q4, the heating coil L2, the second capacitor C2 and the third capacitor C3 constitute a controllable heating module, and when the heating element needs to be heated and controlled, the main control unit in the control module controls the third switching tube Q3 and the fourth switching tube Q4 to be alternately conducted through PWM-H, PWM-L, so that alternating current can be generated on the heating coil L2, and thus controllable heating of the heating element is realized.
The detection coil L1, the first capacitor C1 and the auxiliary circuit form a resonance module, and the operational amplifier U1B and the auxiliary circuit form a conversion unit. When corresponding detection is needed, the main control unit in the control module controls the conduction of the fifth switching tube Q5 through VCC2_ EN, at this time, VCC2 is high level, the detection coil L1 resonates with the first capacitor C1, a voltage signal of waveform oscillation is generated on the detection coil L1, and the voltage signal is sent to the operational amplifier U1B. The operational amplifier U1B changes the voltage signal that this waveform is oscillated into the pulse signal that can carry out frequency measurement, simultaneously, realizes the level matching through resistance R7, R9, then transmits output signal Fre to control module's main control unit, and the main control unit obtains the current resonant frequency's of resonance module characteristic through frequency measurement, then carries out corresponding detection through resonant frequency's characteristic change, and, the multiple detection can be realized to the characteristic change that utilizes resonant frequency:
in an optional embodiment, the detection of the temperature of the heating element is realized by using the characteristic change of the resonant frequency, and specifically, the control module is used for controlling the heating module to generate an alternating current according to the temperature of the heating element in the heating time interval of each cycle when the power of the heating element is controlled; and controlling the resonance module to work in a resonance state in the non-heating time period of each cycle, and determining the temperature of the heating body according to the resonance frequency of the resonance module. In this embodiment, under the control of the control module, an alternating current of a specific time period (Tm) is applied to the heating coil, and the heating element performs induction heating. The heating element has obvious magnetic temperature characteristics under a specific temperature condition (for example, between 150 and 420 ℃). Then, the control module controls the resonance module to work in another specific time period (Tn), Tm and Tn are two time periods which are not overlapped, and the frequency characteristic change of the resonance module can feed back the change of the temperature of the heating body, so the control module can obtain the peak frequency characteristic of the resonance module by detecting the voltage on the detection coil, then determine the change of the temperature of the heating body according to the change of the frequency characteristic, and adjust the sympathetic current on the heating coil according to the change of the temperature of the heating body. Moreover, the heating mode is an induction heating mode, so that the heating mode has higher conversion power, meanwhile, the resonance module works in a resonance state, obvious induction heating is hardly generated, and the working current is very small during actual work.
In an alternative embodiment, the detection of the puff is achieved by a characteristic change in the resonant frequency, and in particular, the detection of the puff may be achieved by a significant jump in the resonant frequency characteristic, since a significant temperature change occurs in the heat generating body when a puff stream is flowing through the aerosol-generating substrate, thereby enabling the number of puffs to be metered.
In an alternative embodiment, the insertion detection of the aerosol-generating substrate is achieved by using a characteristic change in the resonant frequency, and in particular, the operating current of the resonant module is small, and the control module can wake up to detect the change in the operating frequency of the resonant module by timing the VCC2_ EN signal when the aerosol-generating device is in a standby state, so as to achieve the insertion detection of the aerosol-generating substrate.
In summary, in connection with figure 5, during the time period 0 to t1, when no aerosol-generating substrate is added, the detected resonance frequency is f 0; at time t1, with the addition of aerosol-generating substrate, the detected resonant frequency drops to f 1; in the period from t1 to t2, as the preheating is started, the detected resonant frequency gradually rises to f2, wherein f2 is the frequency corresponding to the preset temperature point, and the detected resonant frequency is maintained at the frequency point by controlling the heating; in the period from t3 to t4, since the user has performed one suction, at this time, the heater temperature falls, the detected resonance frequency falls from f2 to f3, and then the resonance frequency rises to f2 by heating control. Similarly, in the period from t5 to t6, as the user performs another suction, the detected resonant frequency is decreased from f2 to f4, and then the resonant frequency is increased to f2 by the heating control. Furthermore, the amplitude of the frequency decrease may be different for different depths of suction, for example, since f4 is less than f3, the depth of suction for the second suction is greater than the depth of suction for the first suction.
Fig. 6 is a flowchart of a first embodiment of a control method for an aerosol-generating device according to the present invention, the control method being applied to a control module, and, in conjunction with fig. 1, the control method comprising:
s10, controlling a resonance module to work in a resonance state, wherein the resonance module comprises a detection coil, at least one part of the detection coil is positioned in a magnetic field of a heating element, and the heating element is a heating element with a magnetic temperature characteristic;
s20, determining the resonant frequency of the resonant module according to the voltage signal of the detection coil;
step S30, determining corresponding detection results according to the resonance frequency, wherein the detection results comprise the temperature of the heating element, whether the suction action occurs or not and whether the insertion action of the aerosol generating substrate occurs or not.
Further, step S20 includes:
converting the voltage signal of the detection coil into a pulse signal;
and determining the resonant frequency of the resonant module according to the pulse signal.
The invention also constitutes a control device comprising a memory storing a computer program and a processor implementing the steps of the method of controlling an aerosol-generating device as described above when the computer program is executed by the processor.
The invention also constitutes a computer storage medium comprising computer instructions which, when run on a processor, cause the processor to carry out a method of controlling an aerosol-generating device as described above.
The invention also constitutes a computer program product for causing a computer to perform the method of controlling an aerosol-generating device as described above, when the computer program product is run on the computer.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (17)
1. An aerosol-generating device comprising a receiving chamber for receiving an aerosol-generating substrate and a heating element for heating the aerosol-generating substrate, wherein the heating element is a heating element having magnetic temperature characteristics, and wherein the aerosol-generating device comprises:
the resonance module comprises a detection coil, and at least one part of the detection coil is positioned in the magnetic field of the heating body;
and the control module is used for controlling the resonance module to work in a resonance state, determining the resonance frequency of the resonance module according to the voltage signal of the detection coil, and determining a corresponding detection result according to the resonance frequency.
2. An aerosol-generating device according to claim 1, wherein the respective detection result comprises a temperature of the heat-generating body, whether a suction action occurs, whether an insertion action of the aerosol-generating substrate occurs.
3. An aerosol-generating device according to claim 1, wherein the detection coil is a helical spring coil and the helical spring coil is looped over the receiving cavity.
4. An aerosol-generating device according to claim 1, wherein the detection coil is a helical pancake coil, and the helical pancake coil is disposed at the periphery of the receiving cavity.
5. An aerosol-generating device according to claim 4, wherein the heat-generating body is a flat rectangular parallelepiped, the detecting coil includes a plurality of spiral flat coils connected in series, and the plurality of spiral flat coils are arranged around the housing chamber in a dispersed manner.
6. An aerosol-generating device according to claim 1, wherein the resonance module further comprises a first switch tube (Q1), a second switch tube (Q2), a fifth switch tube (Q5), a first diode (D1), a second diode (D2), a first capacitor (C1), a first inductor (L3), and a second inductor (L4), wherein a control terminal of the fifth switch tube (Q5) is connected to the first output terminal of the control module, a first terminal of the fifth switch tube (Q5) is connected to the output terminal of the power supply, a second terminal of the fifth switch tube (Q5) is connected to the control terminal of the first switch tube (Q1), the control terminal of the second switch tube (Q2), an anode of the first diode (D1), and an anode of the second diode (D2), respectively, the first terminal of the first switch tube (Q1) and the first terminal of the second switch tube (Q2) are grounded, the second end of the first switch tube (Q1) is connected to the cathode of the first diode (D1), the first end of the detection coil (L1), the first end of the first capacitor (C1) and the first end of the first inductor (L3), the second end of the second switch tube (Q2) is connected to the cathode of the second diode (D2), the second end of the detection coil (L1), the second end of the first capacitor (C1) and the first end of the second inductor (L4), and the second end of the first inductor (L3) and the second end of the second inductor (L4) are connected to the second end of the fifth switch tube (Q5).
7. An aerosol-generating device according to claim 1, wherein the control module comprises:
the conversion unit is used for acquiring a voltage signal of the detection coil and converting the voltage signal into a pulse signal;
and the main control unit is used for determining the resonant frequency of the resonant module according to the pulse signal and determining a corresponding detection result according to the resonant frequency.
8. An aerosol-generating device according to claim 7, wherein the conversion unit comprises: the detection circuit comprises 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 end of the operational amplifier (U1B) is connected with one end of the detection coil (L1) through the second resistor (R6), the non-inverting input end of the operational amplifier (U1B) is connected with the other end of the detection coil (L1) through the third resistor (R8), the first resistor (R5) is connected between the inverting input end of the operational amplifier (U1B) and the ground, and the fourth resistor (R10) is connected between the non-inverting input end of the operational amplifier (U1B) and the ground.
9. An aerosol-generating device according to claim 1, further comprising a heating module comprising a heating coil fitted over the receiving cavity, and,
the control module is further used for controlling the heating module to enable the heating coil to generate alternating current so as to electromagnetically heat the heating body in the accommodating cavity.
10. An aerosol-generating device according to claim 9, wherein the heating module further comprises: a third switch tube (Q3), a fourth switch tube (Q4), a second capacitor (C2) and a third capacitor (C3), wherein a first end of the third switching tube (Q3) is connected with a second end of the fourth switching tube (Q4), the second ends of the third switching tubes (Q3) are respectively connected with the output end of a power supply, the first end of the fourth switching tube (Q4) is grounded, the control end of the third switching tube (Q3) is connected with the second output end of the control module, the control end of the fourth switching tube (Q4) is connected with the third output end 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 end of the heating coil is connected to a first end of the third switching tube (Q3), and a second end of the heating coil is connected to a connection point of the second capacitor (C2) and the third capacitor (C3).
11. An aerosol-generating device according to claim 9,
the control module is used for controlling the heating module to generate alternating current according to the temperature of the heating element in the heating time interval of each cycle when the power of the heating element is controlled; and controlling the resonance module to work in a resonance state in the non-heating time period of each cycle, and determining the temperature of the heating body according to the resonance frequency of the resonance module.
12. An aerosol-generating device according to claim 1,
the control module is further configured to control the resonance module to operate in a resonance state by timed wake-up in a standby state, and determine whether an insertion motion of the aerosol-generating substrate has occurred according to a resonance frequency of the resonance module.
13. A method of controlling an aerosol-generating device, comprising:
controlling a resonance module to work in a resonance state, wherein the resonance module comprises a detection coil, at least one part of the detection coil is positioned in a magnetic field of a heating element, and the heating element is a heating element with a magnetic temperature characteristic;
determining the resonant frequency of the resonant module according to the voltage signal of the detection coil;
and determining a corresponding detection result according to the resonance frequency.
14. A method of controlling an aerosol-generating device according to claim 13, wherein determining the resonant frequency of the resonant module from the voltage signal of the detection coil comprises:
converting the voltage signal of the detection coil into a pulse signal;
and determining the resonant frequency of the resonant module according to the pulse signal.
15. A control device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of controlling an aerosol-generating device according to claim 13 or 14.
16. A computer storage medium comprising computer instructions which, when run on a processor, cause the processor to perform a method of controlling an aerosol-generating device according to claim 13 or 14.
17. A computer program product, characterized in that it causes a computer to carry out the method of controlling an aerosol-generating device according to claim 13 or 14, when the computer program product is run on the computer.
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| CN202111044259.2A CN113907424A (en) | 2021-09-07 | 2021-09-07 | Aerosol generating device and control method thereof |
| PCT/CN2022/110052 WO2023035815A1 (en) | 2021-09-07 | 2022-08-03 | Computer program product, storage medium, control apparatus, aerosol generating apparatus, and control method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111044259.2A CN113907424A (en) | 2021-09-07 | 2021-09-07 | Aerosol generating device and control method thereof |
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