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WO2023026408A1 - Dispositif d'inhalation, substrat et procédé de commande - Google Patents

Dispositif d'inhalation, substrat et procédé de commande Download PDF

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Publication number
WO2023026408A1
WO2023026408A1 PCT/JP2021/031201 JP2021031201W WO2023026408A1 WO 2023026408 A1 WO2023026408 A1 WO 2023026408A1 JP 2021031201 W JP2021031201 W JP 2021031201W WO 2023026408 A1 WO2023026408 A1 WO 2023026408A1
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WO
WIPO (PCT)
Prior art keywords
suction device
susceptor
control unit
electromagnetic induction
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/031201
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English (en)
Japanese (ja)
Inventor
泰弘 小野
寛 手塚
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Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
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Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Priority to PCT/JP2021/031201 priority Critical patent/WO2023026408A1/fr
Publication of WO2023026408A1 publication Critical patent/WO2023026408A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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

Definitions

  • the present invention relates to a suction device, substrate, and control method.
  • the suction device uses a base material including an aerosol source for generating an aerosol and a flavor source for imparting a flavor component to the generated aerosol to generate an aerosol imparted with a flavor component.
  • a user can enjoy the flavor by inhaling the flavor component-applied aerosol generated by the suction device.
  • the action of the user inhaling the aerosol is hereinafter also referred to as puffing or puffing action.
  • Patent Document 1 discloses a technique for estimating the temperature of a susceptor based on changes in the resonance frequency of an RLC circuit including an electromagnetic induction source.
  • Patent Document 1 no consideration was given to the possibility of an abnormality occurring in the induction heating type suction device.
  • an object of the present invention is to provide a mechanism capable of monitoring the state of an induction heating suction device.
  • an aspiration device that generates an aerosol using a substrate containing an aerosol source, which generates a varying magnetic field when an alternating current is applied.
  • a susceptor that generates heat to heat the base material when the fluctuating magnetic field penetrates
  • a detector that detects information about magnetostriction of the susceptor that occurs when the fluctuating magnetic field penetrates the susceptor.
  • a control section that determines the state of the suction device based on the information detected by the detection section.
  • the detection unit may detect information about vibration of a fixing part that fixes the susceptor to the suction device as information about the magnetostriction of the susceptor.
  • the detection section may detect information indicating the frequency of the fixed section as information on the magnetostriction of the susceptor.
  • the detection unit may be arranged on the fixing unit.
  • the susceptor may be an accommodating portion that accommodates the substrate in an internal space, and an end portion of the accommodating portion that is opposite to the opening into which the substrate is inserted may be connected to the fixing portion.
  • the fixed part may be a plate-shaped member.
  • the control unit may determine whether the state of the suction device is normal based on whether the information detected by the detection unit satisfies a predetermined condition.
  • control unit may determine that the suction device has failed.
  • control unit determines that the state of the suction device is abnormal, the control unit performs normalization processing for returning the state of the suction device to normal, and the state of the suction device is restored to normal even by the normalization processing. If not, it may be determined that the suction device has failed.
  • the control unit changes the natural frequency of the RLC circuit including the electromagnetic induction source, and determines whether or not the state of the suction device has returned to normal due to the change of the natural frequency. and may be performed one or more times.
  • the control unit may prohibit power supply to the electromagnetic induction source when determining that the suction device has failed.
  • the control unit may control the operation of the electromagnetic induction source based on the heating profile, and the detection unit may detect information about the magnetostriction of the susceptor at timing according to the heating profile.
  • the detection unit may detect information about the magnetostriction of the susceptor while the operation of the electromagnetic induction source is being controlled based on the heating profile.
  • the detection unit may detect information about the magnetostriction of the susceptor before the operation of the electromagnetic induction source is controlled based on the heating profile.
  • the detection unit may detect information about the magnetostriction of the susceptor after the operation of the electromagnetic induction source is controlled based on the heating profile.
  • the detection unit detects information about magnetostriction of the susceptor before and after the operation of the electromagnetic induction source is controlled based on the heating profile, and the control unit controls the electromagnetic induction source based on the heating profile.
  • the state of the suction device may be determined based on a change in information regarding the magnetostriction of the susceptor before and after the operation of is controlled.
  • an aspiration device that generates an aerosol using a substrate containing an aerosol source, wherein An electromagnetic induction source that generates a magnetic field, a susceptor that generates heat to heat the base material when the fluctuating magnetic field penetrates, and information on the magnetostriction of the susceptor generated when the fluctuating magnetic field penetrates the susceptor is detected.
  • a suction device comprising a detector and a controller for determining the state of the suction device based on information detected by the detector;
  • a substrate is provided.
  • a control method for controlling an aspiration device that generates an aerosol using a substrate containing an aerosol source comprising:
  • the apparatus includes an electromagnetic induction source that generates a varying magnetic field when an alternating current is applied, a susceptor that generates heat to heat the substrate when the varying magnetic field penetrates, and a susceptor that receives the varying magnetic field.
  • a detection unit that detects information about the magnetostriction of the susceptor that occurs when the A method is provided.
  • a mechanism is provided that can monitor the state of an induction heating suction device.
  • FIG. 3 is a block diagram showing components involved in induction heating by the suction device according to the embodiment; It is a figure which shows the equivalent circuit of the circuit involved in the induction heating by the suction device which concerns on this embodiment.
  • 5 is a graph showing an example of time-series transition of the actual temperature of the susceptor induction-heated based on the heating profile shown in Table 1.
  • FIG. 4 is a diagram for explaining magnetostriction of a housing portion that is a susceptor; It is a flowchart which shows an example of the flow of the process performed by the suction device which concerns on this embodiment.
  • Configuration example of suction device The suction device according to this configuration example generates an aerosol by heating a substrate including an aerosol source by induction heating (IH (Induction Heating)). This configuration example will be described below with reference to FIG.
  • IH Induction Heating
  • FIG. 1 is a schematic diagram schematically showing a configuration example of a suction device.
  • the suction device 100 includes a power supply unit 111, a sensor unit 112, a notification unit 113, a storage unit 114, a communication unit 115, a control unit 116, an electromagnetic induction source 162, and a storage unit 140. including.
  • the suction is performed by the user while the stick-shaped base material 150 is held in the holding part 140 .
  • Each component will be described in order below.
  • the power supply unit 111 accumulates power.
  • the power supply unit 111 supplies electric power to each component of the suction device 100 .
  • the power supply unit 111 may be composed of, for example, a rechargeable battery such as a lithium ion secondary battery.
  • the power supply unit 111 may be charged by being connected to an external power supply via a USB (Universal Serial Bus) cable or the like.
  • the power supply unit 111 may be charged in a state of being disconnected from the device on the power transmission side by wireless power transmission technology. Alternatively, only the power supply unit 111 may be detached from the suction device 100 or may be replaced with a new power supply unit 111 .
  • the sensor unit 112 detects various information regarding the suction device 100 .
  • the sensor unit 112 then outputs the detected information to the control unit 116 .
  • the sensor unit 112 is configured by a pressure sensor such as a condenser microphone, a flow rate sensor, or a temperature sensor.
  • the sensor unit 112 detects a numerical value associated with the user's suction
  • the sensor unit 112 outputs information indicating that the user has performed suction to the control unit 116 .
  • the sensor unit 112 is configured by an input device, such as a button or switch, that receives information input from the user.
  • sensor unit 112 may include a button for instructing start/stop of aerosol generation.
  • the sensor unit 112 then outputs the information input by the user to the control unit 116 .
  • the sensor unit 112 is configured by a temperature sensor that detects the temperature of the susceptor that is induction-heated by the electromagnetic induction source 162 .
  • the notification unit 113 notifies the user of information.
  • the notification unit 113 is configured by a light-emitting device such as an LED (Light Emitting Diode).
  • the notification unit 113 emits light in different light emission patterns when the power supply unit 111 is in a charging required state, when the power supply unit 111 is being charged, when an abnormality occurs in the suction device 100, and the like.
  • the light emission pattern here is a concept including color, timing of lighting/lighting out, and the like.
  • the notification unit 113 may be configured by a display device that displays an image, a sound output device that outputs sound, a vibration device that vibrates, or the like, together with or instead of the light emitting device.
  • the notification unit 113 may notify information indicating that suction by the user has become possible. Information indicating that suction by the user is enabled is notified when the temperature of the susceptor heated by electromagnetic induction reaches a predetermined temperature.
  • the storage unit 114 stores various information for the operation of the suction device 100 .
  • the storage unit 114 is configured by, for example, a non-volatile storage medium such as flash memory.
  • An example of the information stored in the storage unit 114 is information regarding the OS (Operating System) of the suction device 100, such as control details of various components by the control unit 116.
  • FIG. Another example of the information stored in the storage unit 114 is information related to suction by the user, such as the number of times of suction, suction time, total suction time, and the like.
  • the communication unit 115 is a communication interface for transmitting and receiving information between the suction device 100 and other devices.
  • the communication unit 115 performs communication conforming to any wired or wireless communication standard.
  • a communication standard for example, wireless LAN (Local Area Network), wired LAN, Wi-Fi (registered trademark), Bluetooth (registered trademark), or the like can be adopted.
  • the communication unit 115 transmits information about suction by the user to the smartphone so that the smartphone displays information about suction by the user.
  • the communication unit 115 receives new OS information from the server in order to update the OS information stored in the storage unit 114 .
  • the control unit 116 functions as an arithmetic processing device and a control device, and controls the general operations within the suction device 100 according to various programs.
  • the control unit 116 is realized by an electronic circuit such as a CPU (Central Processing Unit) and a microprocessor.
  • the control unit 116 may include a ROM (Read Only Memory) for storing programs to be used, calculation parameters, etc., and a RAM (Random Access Memory) for temporarily storing parameters, etc. that change as appropriate.
  • the suction device 100 executes various processes under the control of the controller 116 .
  • the housing part 140 has an internal space 141 and holds the stick-shaped base material 150 while housing a part of the stick-shaped base material 150 in the internal space 141 .
  • the accommodating portion 140 has an opening 142 that communicates the internal space 141 with the outside, and holds the stick-shaped substrate 150 inserted into the internal space 141 through the opening 142 .
  • the housing portion 140 is a cylindrical body having an opening 142 and a bottom portion 143 as a bottom surface, and defines a columnar internal space 141 .
  • the accommodating part 140 is configured such that the inner diameter is smaller than the outer diameter of the stick-shaped base material 150 at least in part in the height direction of the cylindrical body, and the stick-shaped base material 150 inserted into the inner space 141 is held in the container.
  • the stick-shaped substrate 150 can be held by pressing from the outer periphery.
  • the containment portion 140 also functions to define a flow path for air through the stick-shaped substrate 150 .
  • An air inlet hole which is an inlet for air into the flow path, is arranged, for example, in the bottom portion 143 .
  • the air outflow hole which is the exit of air from such a channel, is the opening 142 .
  • the stick-shaped base material 150 is a stick-shaped member.
  • the stick-type substrate 150 includes a substrate portion 151 and a mouthpiece portion 152 .
  • the base material portion 151 includes an aerosol source.
  • the aerosol source is atomized by heating to produce an aerosol.
  • the aerosol source may be tobacco-derived, such as, for example, a processed product of cut tobacco or tobacco material formed into granules, sheets, or powder. Aerosol sources may also include non-tobacco sources made from plants other than tobacco, such as mints and herbs. By way of example, the aerosol source may contain perfume ingredients such as menthol. If the inhalation device 100 is a medical inhaler, the aerosol source may contain a medicament for inhalation by the patient.
  • the aerosol source is not limited to solids, and may be, for example, polyhydric alcohols such as glycerin and propylene glycol, and liquids such as water. At least a portion of the base material portion 151 is accommodated in the internal space 141 of the accommodation portion 140 while the stick-shaped substrate 150 is held in the accommodation portion 140.
  • the mouthpiece 152 is a member held by the user when inhaling. At least part of the mouthpiece 152 protrudes from the opening 142 when the stick-shaped base material 150 is held in the housing 140 . Then, when the user holds the mouthpiece 152 protruding from the opening 142 in his/her mouth and sucks, air flows into the housing 140 through an air inlet hole (not shown). The air that has flowed in passes through the internal space 141 of the housing portion 140 , that is, through the base portion 151 and reaches the inside of the user's mouth together with the aerosol generated from the base portion 151 .
  • the housing part 140 is a susceptor that generates heat by electromagnetic induction. It is desirable that the housing portion 140 has conductivity and ferromagnetism. As an example, the housing part 140 may be a SUS pipe.
  • the accommodating portion 140 which is a susceptor, generates heat to heat the stick-shaped substrate 150 when a fluctuating magnetic field enters.
  • the electromagnetic induction source 162 heats the susceptor by electromagnetic induction.
  • the electromagnetic induction source 162 may be a solenoid-type induction coil that generates a varying magnetic field when alternating current is applied.
  • An electromagnetic induction source 162 configured as a solenoid-type induction coil is arranged so as to wrap around the outer periphery of the housing portion 140 .
  • the fluctuating magnetic field generated by the electromagnetic induction source 162 penetrates into the housing portion 140 arranged in the space surrounded by the electromagnetic induction source 162 and causes the housing portion 140, which is the susceptor, to generate heat.
  • the accommodating part 140 When the accommodating part 140 generates heat by electromagnetic induction, the base material part 151 of the stick-shaped base material 150 accommodated in the accommodating part 140 is heated from the outer circumference, and an aerosol is generated.
  • power may be supplied and an aerosol may be generated when the sensor unit 112 detects that a predetermined user input has been performed.
  • the temperature of the housing portion 140 which is the susceptor, reaches a predetermined temperature, suction by the user becomes possible. After that, when the sensor unit 112 detects that a predetermined user input has been performed, the power supply may be stopped.
  • power may be supplied and aerosol may be generated during a period in which the sensor unit 112 detects that the user has inhaled.
  • the combination of the suction device 100 and the stick-shaped substrate 150 may be regarded as one system in that aerosol can be generated by combining the suction device 100 and the stick-shaped substrate 150 .
  • Induction heating is the process of heating a conductive object by penetrating a varying magnetic field into the object.
  • Induction heating involves a magnetic field generator that generates a varying magnetic field and a conductive susceptor that is heated by being exposed to the varying magnetic field.
  • An example of a varying magnetic field is an alternating magnetic field.
  • the electromagnetic induction source 162 shown in FIG. 1 is an example of a magnetic field generator.
  • the housing portion 140 shown in FIG. 1 is an example of a susceptor.
  • the magnetic field generator and the susceptor are arranged in relative positions such that the fluctuating magnetic field generated by the magnetic field generator penetrates the susceptor, when the fluctuating magnetic field is generated from the magnetic field generator, an eddy current is induced in the susceptor. .
  • the eddy current flowing through the susceptor generates Joule heat corresponding to the electrical resistance of the susceptor, thereby heating the susceptor.
  • Such heating is also referred to as joule heating, ohmic heating, or resistance heating.
  • the susceptor may have magnetism. In that case, the susceptor is further heated by magnetic hysteresis heating.
  • Magnetic hysteresis heating is the process of heating a magnetic object by impinging it with a varying magnetic field.
  • the magnetic dipoles contained in the magnetic body align along the magnetic field. Therefore, when a fluctuating magnetic field penetrates a magnetic material, the orientation of the magnetic dipole changes according to the applied fluctuating magnetic field. Such reorientation of the magnetic dipoles generates heat in the magnetic material, heating the susceptor.
  • Magnetic hysteresis heating typically occurs at temperatures below the Curie point and does not occur at temperatures above the Curie point.
  • the Curie point is the temperature at which a magnetic material loses its magnetic properties. For example, when the temperature of a susceptor having ferromagnetism below the Curie point exceeds the Curie point, the magnetization of the susceptor undergoes a reversible phase transition from ferromagnetism to paramagnetism. When the temperature of the susceptor exceeds the Curie point, magnetic hysteresis heating no longer occurs, so the rate of temperature increase slows down.
  • the susceptor is preferably made of a conductive material. Furthermore, it is desirable that the susceptor be made of a ferromagnetic material. In the latter case, it is possible to increase the heating efficiency by combining resistance heating and magnetic hysteresis heating.
  • the susceptor is made of one or more materials selected from a group of materials including aluminum, iron, nickel, cobalt, conductive carbon, copper, stainless steel, and the like.
  • FIG. 2 is a block diagram showing components involved in induction heating by the suction device 100 according to this embodiment.
  • the suction device 100 includes a drive circuit 169 including an inverter circuit 163 and an RLC circuit 164.
  • the drive circuit 169 is a circuit for generating a varying magnetic field using power supplied from the power supply section 111 .
  • the drive circuit 169 operates by power supplied from the power supply section 111 .
  • the power supply unit 111 is a DC (Direct Current) power supply.
  • the power supply unit 111 supplies DC power.
  • the inverter circuit 163 is a DC/AC (Alternate Current) inverter that converts the DC power supplied from the power supply unit 111 into AC power.
  • inverter circuit 163 is configured as a half-bridge inverter or a full-bridge inverter having one or more switching elements. Examples of switching elements include MOSFETs (Metal-Oxide-Semiconductor Field Effect Transistors) and IGBTs (Insulated Gate Bipolar Transistors).
  • the RLC circuit 164 is a circuit that uses the AC power supplied from the inverter circuit 163 to generate a varying magnetic field.
  • RLC circuit 164 includes at least electromagnetic induction source 162 .
  • RLC circuit 164 may further comprise other circuits such as capacitors, resistors, matching circuits, and the like.
  • the electromagnetic induction source 162 uses the AC power supplied from the inverter circuit 163 to generate a varying magnetic field (that is, alternating magnetic field).
  • a varying magnetic field that is, alternating magnetic field.
  • the sensor unit 112 includes a power sensor 171 and a vibration sensor 172.
  • the power sensor 171 detects information on DC power supplied from the power supply unit 111 to the drive circuit 169 .
  • Information on DC power includes a current value and a voltage value.
  • the power sensor 171 may include an MCU (Micro Controller Unit) having a feedback channel from the power supply section 111 .
  • the power sensor 171 detects the current value and voltage value of the DC power supplied to the driving circuit 169 based on the feedback from the power supply section 111 .
  • the control unit 116 controls power supply to the electromagnetic induction source 162 .
  • Control of power supply to electromagnetic induction source 162 may be realized by controlling power supply from power supply unit 111 to drive circuit 169 .
  • control of power supply to the electromagnetic induction source 162 may be realized by controlling the operation of the inverter circuit 163, such as controlling the ON/OFF timing of the switching element.
  • control unit 116 controls power supply to the electromagnetic induction source 162 based on information on the DC power supplied to the drive circuit 169 detected by the power sensor 171 . Specifically, first, the control unit 116 estimates the temperature of the susceptor based on information on the DC power supplied to the drive circuit 169 . Then, the control unit 116 controls power supply to the electromagnetic induction source 162 based on the estimated temperature of the susceptor. At that time, the control unit 116 controls power supply to the electromagnetic induction source 162 so that the temperature of the susceptor changes according to a heating profile described later.
  • FIG. 3 is a diagram showing an equivalent circuit of a circuit involved in induction heating by the suction device 100 according to this embodiment.
  • the apparent electrical resistance value R A corresponds to the series connection formed by the electrical resistance value R C of the drive circuit 169 and the electrical resistance value R S of the susceptor.
  • the apparent electrical resistance value RA and the temperature of the susceptor are substantially linear.
  • the control unit 116 can calculate the apparent electrical resistance value RA based on the current value IDC and the voltage value VDC , and estimate the temperature of the susceptor based on the apparent electrical resistance value RA . be.
  • the vibration sensor 172 detects information regarding vibrations occurring in the suction device 100 .
  • the vibration sensor 172 will be described later in detail.
  • the controller 116 controls the operation of the electromagnetic induction source 162 based on the temperature setting.
  • the temperature setting is information that defines the time series transition of the target temperature, which is the target temperature of the susceptor. In the following such temperature settings are also referred to as heating profiles.
  • the control unit 116 controls power supply to the electromagnetic induction source 162 so that the actual temperature of the susceptor (hereinafter also referred to as the actual temperature) changes in the same manner as the target temperature specified in the heating profile changes over time. .
  • the heating profile is typically designed to optimize the flavor experienced by the user when the user inhales the aerosol produced from the stick-shaped substrate 150 . Therefore, by controlling the temperature of the susceptor based on the heating profile, the flavor experienced by the user can be optimized.
  • a heating profile includes one or more combinations of the elapsed time from the start of heating and the target temperature to be reached in that elapsed time. Then, the control unit 116 controls the temperature of the susceptor based on the difference between the target temperature in the heating profile corresponding to the elapsed time from the start of the current heating and the current actual temperature. Temperature control of the susceptor can be realized, for example, by known feedback control. In feedback control, the controller 116 may control the power supplied to the electromagnetic induction source 162 based on the difference between the actual temperature and the target temperature. Feedback control may be, for example, PID control (Proportional-Integral-Differential Controller). Alternatively, control unit 116 may perform simple ON-OFF control. For example, the control unit 116 may supply power to the electromagnetic induction source 162 until the actual temperature reaches the target temperature, and interrupt power supply to the electromagnetic induction source 162 when the actual temperature reaches the target temperature.
  • PID control Proportional-Integral-Differential
  • the control unit 116 may control the voltage applied from the power supply unit 111 to the drive circuit 169 by controlling the power supply to the electromagnetic induction source 162 .
  • the control unit 116 may cause the power supply unit 111 to apply voltage to the driving circuit 169 in the form of pulses by pulse width modulation (PWM).
  • PWM pulse width modulation
  • the controller 116 may control the voltage per unit time by adjusting the DUTY ratio of the power pulse.
  • the control unit 116 may control the voltage per unit time by increasing or decreasing the voltage itself.
  • control unit 116 may control the frequency of the inverter circuit 163 to increase or decrease the temperature of the susceptor.
  • the control unit 116 may match the frequency of the inverter circuit 163 with the resonance frequency of the RLC circuit 164 to achieve efficient heating and raise the temperature of the susceptor.
  • the control unit 116 may make heating inefficient by making the frequency of the inverter circuit 163 different from the resonance frequency of the RLC circuit 164, thereby lowering the temperature of the susceptor.
  • the time interval from the start to the end of the process of generating an aerosol using the stick-shaped substrate 150 is also referred to as a heating session below. called.
  • the beginning of the heating session is the timing at which heating based on the heating profile is started.
  • the end of the heating session is when a sufficient amount of aerosol is no longer produced.
  • a heating session consists of a first half preheating period and a second half puffable period.
  • the puffable period is the period during which a sufficient amount of aerosol is assumed to be generated.
  • the preheating period is the period from the start of heating to the start of the puffable period. Heating performed in the preheating period is also referred to as preheating.
  • FIG. 4 is a graph showing an example of time-series transition of the actual temperature of the susceptor induction-heated based on the heating profile shown in Table 1.
  • the horizontal axis of this graph is time (seconds).
  • the vertical axis of this graph is the temperature of the susceptor.
  • a line 21 in this graph indicates the time series transition of the actual temperature of the susceptor.
  • the actual temperature of the susceptor changes in the same manner as the target temperature defined in the heating profile.
  • the heating profile first includes an initial heating section.
  • the initial temperature rising section is a time section included at the beginning of the heating profile, and is a section in which the target temperature set at the end is higher than the initial temperature.
  • the initial temperature is the assumed temperature of the susceptor at the start of heating.
  • An example of an initial temperature is any temperature, such as 0°C.
  • Another example of the initial temperature is the temperature corresponding to the air temperature.
  • the actual temperature of the susceptor reached 310° C. 17 seconds after the start of heating and was maintained at 310° C. until 35 seconds after the start of heating, according to the target temperature set in the initial temperature rising section. .
  • the temperature of the stick-type substrate 150 reaches a temperature at which a sufficient amount of aerosol is generated.
  • the temperature of the stick-type substrate 150 reaches a temperature at which a sufficient amount of aerosol is generated.
  • the heating profile then includes an intermediate cooling interval.
  • the midway temperature decrease interval is a time interval after the initial temperature increase interval in which the target temperature set at the end is lower than the target temperature set at the end of the initial temperature increase interval.
  • the actual temperature of the susceptor drops from 310.degree. C. to 260.degree.
  • power supply to the electromagnetic induction source 162 may be stopped. Even in that case, the residual heat of the susceptor and stick-type substrate 150 will generate a sufficient amount of aerosol. If the susceptor is kept at a high temperature, the aerosol source contained in the stick-shaped substrate 150 is rapidly consumed, which may cause inconveniences such as too strong flavor tasted by the user. In this regard, by providing an intermediate temperature drop section in the middle, it is possible to avoid such inconvenience and improve the quality of the user's puff experience.
  • the heating profile then includes a reheating interval.
  • the re-heating interval is a time interval after the intermediate temperature-lowering interval, in which the target temperature set at the end is higher than the target temperature set at the end of the intermediate temperature-lowering interval.
  • the actual temperature of the susceptor rises from 260° C. to 290° C. from 45 seconds to 180 seconds after the start of heating, and then rises to 290° C. for 80 seconds. It is maintained at 290°C.
  • the temperature of the susceptor continues to drop, the temperature of the stick-shaped substrate 150 will also drop, resulting in a decrease in the amount of aerosol produced and a deterioration in the flavor tasted by the user.
  • by raising the temperature again after lowering the temperature it is possible to prevent deterioration of the flavor that the user enjoys even in the second half of the heating session.
  • the heating profile includes a heating end section at the end.
  • the heating end section is a time section after the reheating section and is a time section in which heating is not performed.
  • the target temperature does not have to be set.
  • the actual temperature of the susceptor drops after 260 seconds from the start of heating.
  • Power supply to the electromagnetic induction source 162 may be terminated 260 seconds after the start of heating. Even in that case, the residual heat of the susceptor and stick-shaped substrate 150 will generate a sufficient amount of aerosol for a while.
  • the puffable period ie the heating session, ends.
  • the timing at which the puffable period starts and ends may be notified to the user. Furthermore, the user may be notified of the timing (for example, the timing of the end of the reheating interval) that is a predetermined time before the end of the puffable period. In that case, the user can perform puffing during the puffable period by referring to such notification.
  • the timing for example, the timing of the end of the reheating interval
  • the vibration sensor 172 functions as a detector that detects information about the magnetostriction of the housing portion 140 that occurs when a fluctuating magnetic field enters the housing portion 140, which is the susceptor.
  • Magnetostriction is a phenomenon in which the shape of a ferromagnetic material changes when a magnetic field is applied to the ferromagnetic material. The magnetostriction of the housing portion 140, which is the susceptor, will be described in detail with reference to FIG.
  • FIG. 5 is a diagram for explaining the magnetostriction of the housing portion 140, which is the susceptor.
  • the accommodating portion 140 around which the electromagnetic induction source 162 is wound is arranged on the fixed portion 149 .
  • the fixing portion 149 is a member that fixes the accommodating portion 140 as a susceptor to the suction device 100 .
  • An end portion of the accommodating portion 140 opposite to the opening 142 into which the stick-shaped substrate 150 is inserted (that is, the end portion on the bottom portion 143 side) is connected to the fixing portion 149 .
  • the direction of the opening 142 is also referred to as an upward direction
  • the direction toward the bottom portion 143 is also referred to as a downward direction.
  • an alternating current is applied to the electromagnetic induction source 162, as shown in FIG. 5, in the space inside the electromagnetic induction source 162, i.e., the space in which the housing portion 140 is arranged, the current flows from top to bottom and then from bottom to top. , an alternating magnetic field 90 whose direction changes with time is generated.
  • the accommodation part 140 which is a ferromagnetic material, extends along the direction of the magnetic field from the initial state in which no magnetic field is applied to the state of saturation magnetization when the magnetic field is applied. Therefore, when the alternating magnetic field 90 is applied to the accommodating portion 140, the accommodating portion 140 repeats expansion and contraction in the vertical direction. Since the lower end of the housing portion 140 is connected to the fixed portion 149 , vertical expansion and contraction of the housing portion 140 due to magnetostriction appears as vertical vibration of the fixed portion 149 .
  • the vibration sensor 172 is arranged on the fixed portion 149 .
  • the vibration sensor 172 can detect information about the vertical vibration of the fixing portion 149 corresponding to the vertical expansion and contraction of the housing portion 140 due to magnetostriction.
  • the fixed part 149 is a plate-like member.
  • the fixed portion 149 may be a substrate on which at least part of the drive circuit 169 is arranged.
  • the vibration sensor 172 is desirably arranged at the end of the plate-shaped fixing portion 149 .
  • the fixing portion 149 is a plate-like member, the ends of the fixing portion 149 vibrate greatly as the accommodation portion 140 expands and contracts, and the information detection accuracy of the vibration sensor 172 can be improved.
  • the vibration sensor 172 detects information about the vibration of the fixed portion 149 as information about the magnetostriction of the housing portion 140, which is the susceptor. Specifically, the vibration sensor 172 detects information indicating the vibration frequency of the fixed portion 149 as information on the magnetostriction of the housing portion 140, which is the susceptor.
  • the information indicating the frequency of vibration of fixed portion 149 may be the frequency of vibration of fixed portion 149 . With such a configuration, it is possible to quantitatively grasp the state of magnetostriction of the housing portion 140 as the vibration frequency of the fixing portion 149 .
  • the vibration sensor 172 detects the vibration frequency at timing according to the heating profile. According to this configuration, it is possible to determine the state of the suction device 100 at the timing when the user uses the suction device 100 .
  • the vibration sensor 172 may detect the vibration frequency while the operation of the electromagnetic induction source 162 is controlled based on the heating profile. For example, the vibration sensor 172 may detect the vibration frequency during the preheating period. According to such a configuration, it is possible to monitor the state of the suction device 100 heating the stick-shaped substrate 150 in real time.
  • the control unit 116 determines the state of the suction device 100 based on the information (that is, vibration frequency) detected by the vibration sensor 172 .
  • the vibration frequency of the fixed portion 149 may vary from the reference value due to various circumstances. Examples of such circumstances include aged deterioration of the suction device 100, loss of the housing portion 140 which is a susceptor, and variation in the natural frequency of the RLC circuit 164.
  • the natural frequency of the RLC circuit 164 is the same concept as the resonant frequency of the RLC circuit 164 .
  • the standard value may be defined as a specification.
  • the vibration frequency of the fixed part 149 measured at the factory shipment of the suction device 100 may be set as the reference value.
  • the control unit 116 determines whether the state of the suction device 100 is normal based on whether the vibration frequency detected by the vibration sensor 172 satisfies a predetermined condition.
  • a predetermined condition is that the difference between the vibration frequency and the reference value is within a predetermined threshold.
  • the control unit 116 determines that the state of the suction device 100 is normal when the difference between the vibration frequency detected by the vibration sensor 172 and the reference value is within a predetermined threshold.
  • the control unit 116 determines that the state of the suction device 100 is abnormal.
  • the apparent electrical resistance value RA and the temperature of the susceptor described with reference to FIG. An error may occur in the relationship of , and an estimation error may occur in the temperature of the susceptor. In that case, it may be difficult to transition the temperature of the susceptor as prescribed by the heating profile, making it difficult to deliver an adequate aerosol to the user.
  • the predetermined threshold value is set to a value at which the susceptor temperature estimation error is at an allowable level if the difference between the vibration frequency detected by the vibration sensor 172 and the reference value is equal to or less than the predetermined threshold value. be. According to this configuration, the state of the suction device 100 is monitored as to whether it is a normal state in which appropriate aerosol can be delivered to the user or an abnormal state in which it is difficult to deliver appropriate aerosol to the user. becomes possible.
  • the control unit 116 may determine that the suction device 100 has failed.
  • a failure state of the suction device 100 is a state in which the state of the suction device 100 is unlikely to return to normal. According to such a configuration, it is possible to determine that the suction device 100 has failed before a fatal failure such as failure to energize the electromagnetic induction source 162 occurs. The failure of the suction device 100 may be notified to the user by the notification unit 113, for example.
  • control unit 116 determines that the suction device 100 has failed, it prohibits power supply to the electromagnetic induction source 162 . That is, the control unit 116 does not heat the stick-shaped substrate 150 after the timing at which it is determined that the suction device 100 has failed. According to such a configuration, it is possible to prevent inappropriate aerosol from being delivered to the user.
  • control unit 116 When the control unit 116 determines that the state of the suction device 100 is abnormal, it may perform normalization processing to restore the state of the suction device 100 to normal. If the state of the suction device 100 does not return to normal even after the normalization process, the control unit 116 may determine that the suction device 100 has failed. According to this configuration, when the state of the suction device 100 returns to normal by the normalization process, the suction device 100 can be used continuously. On the other hand, if the normalization process does not restore the state of the suction device 100 to normal, power supply to the electromagnetic induction source 162 can be prohibited to prevent inappropriate aerosol from being delivered to the user. It becomes possible.
  • the control unit 116 changes the natural frequency of the RLC circuit 164 and determines whether or not the state of the suction device 100 has returned to normal by changing the natural frequency once. You can do more than that.
  • Changing the natural frequency of the RLC circuit 164 is achieved by changing the frequency of the alternating current applied to the RLC circuit 164, changing the reactance of the RLC circuit 164, or the like.
  • an example of changing the natural frequency of the RLC circuit 164 and determining whether or not the state of the suction device 100 has returned to normal will be described below as an example.
  • the control unit 116 When the original natural frequency of the RLC circuit 164 is 100 kHz, the control unit 116 first changes the natural frequency of the RLC circuit 164 to 95 kHz. Then, the control unit 116 supplies predetermined power to the electromagnetic induction source 162 and determines whether or not the temperature of the susceptor approaches a predetermined temperature.
  • the predetermined power supply may be power supply based on the heating profile during the preheating period. In that case, the predetermined temperature is the target temperature at the end of the preheating period.
  • the predetermined power supply may be a weak power supply independent of the heating profile.
  • control unit 116 determines that the state of the suction device 100 has returned to normal. In that case, control unit 116 stops the normalization process, and thereafter sets the natural frequency of RLC circuit 164 to 95 kHz. On the other hand, when the temperature of the susceptor does not asymptotically approach the predetermined temperature, the control unit 116 determines that the state of the suction device 100 has not returned to normal.
  • the control unit 116 changes the natural frequency of the RLC circuit 164 to 105 kHz when the state of the suction device 100 does not return to normal even after changing the natural frequency of the RLC circuit 164 to 95 kHz. Then, the control unit 116 supplies predetermined power to the electromagnetic induction source 162 and determines whether or not the temperature of the susceptor approaches a predetermined temperature. When the temperature of the susceptor asymptotically approaches a predetermined temperature, the control unit 116 determines that the state of the suction device 100 has returned to normal. In that case, control unit 116 stops the normalization process, and thereafter sets the natural frequency of RLC circuit 164 to 105 kHz. On the other hand, when the temperature of the susceptor does not asymptotically approach the predetermined temperature, the control unit 116 determines that the state of the suction device 100 has not returned to normal.
  • the control unit 116 determines that the suction device 100 has failed.
  • FIG. 6 is a flowchart showing an example of the flow of processing executed by the suction device 100 according to this embodiment.
  • a puff request is a user action requesting to generate an aerosol.
  • An example of the puff request is an operation on the suction device 100 such as operating a switch or the like provided on the suction device 100 .
  • Another example of a puff request is inserting a stick substrate 150 into the suction device 100 .
  • the insertion of the stick-type substrate 150 into the suction device 100 is performed by a capacitance-type proximity sensor that detects the capacitance of the space near the opening 142, or a pressure sensor that detects the pressure in the internal space 141. , can be detected.
  • step S102 If it is determined that the puff request has not been detected (step S102: NO), the control unit 116 waits until the puff request is detected.
  • step S104 controls the operation of the electromagnetic induction source 162 to perform heating based on the heating profile.
  • the control unit 116 controls the power supplied from the power supply unit 111 to the drive circuit 169 or the operation of the inverter circuit 163 based on the heating profile.
  • the vibration sensor 172 detects the vibration frequency of the fixed portion 149 (step S106). For example, the vibration sensor 172 detects the vibration frequency during the preheating period.
  • the control unit 116 determines whether the state of the suction device 100 is normal based on the vibration frequency detected by the vibration sensor 172 (step S108). For example, when the difference between the vibration frequency detected by the vibration sensor 172 and the reference value is within a predetermined threshold value, the control unit 116 determines that the suction device 100 is in a normal state. On the other hand, when the difference between the vibration frequency detected by the vibration sensor 172 and the reference value exceeds a predetermined threshold, the control unit 116 determines that the state of the suction device 100 is abnormal.
  • step S108 When it is determined that the state of the suction device 100 is normal (step S108: YES), heating is continued based on the heating profile. After that, the control unit 116 determines whether or not the termination condition is satisfied (step S110).
  • An example of the termination condition is that the elapsed time from the start of heating has reached a predetermined time.
  • Another example of the termination condition is that the number of puffs from the start of heating has reached a predetermined number.
  • step S110 NO
  • the control unit 116 waits until the termination condition is satisfied.
  • step S110 YES
  • the control unit 116 terminates heating based on the heating profile (step S112). After that, the process ends.
  • step S108 if the state of the suction device 100 is determined to be abnormal (step S108: NO), the controller 116 suspends heating based on the heating profile (step S114).
  • control unit 116 performs normalization processing (step S116). For example, as the normalization process, the control unit 116 changes the natural frequency of the RLC circuit 164 and determines whether or not the state of the suction device 100 has returned to normal by changing the natural frequency. Do this one or more times.
  • control unit 116 determines whether or not the state of the suction device 100 has returned to normal in the normalization process (step S118).
  • step S118 If it is determined in the normalization process that the state of the suction device 100 has returned to normal (step S118: YES), the process ends. The next time a puff request is detected, the RLC circuit 164 will operate at the modified natural frequency in the normalization process.
  • step S118 If it is determined in the normalization process that the state of the suction device 100 has not returned to normal (step S118: NO), the control unit 116 determines that the suction device 100 has failed, and prohibits power supply to the electromagnetic induction source 162. (step S120). As a result, even if a puff request is detected next time, heating based on the heating profile will not be performed.
  • the notification unit 113 notifies the user of the failure (step S122). After that, the process ends.
  • vibration sensor 172 detects the vibration frequency while the operation of the electromagnetic induction source 162 is being controlled based on the heating profile in the above embodiment, the present invention is not limited to such an example.
  • the vibration sensor 172 may detect the vibration frequency before the operation of the electromagnetic induction source 162 is controlled based on the heating profile.
  • the control unit 116 may supply a weak electric power to the electromagnetic induction source 162 and cause the vibration sensor 172 to detect the vibration frequency by using detection of the puff request as a trigger.
  • the state of the suction device 100 is determined before starting heating based on the heating profile.
  • the control unit 116 attempts normalization processing, and prohibits heating when the state of the suction device 100 does not return to normal. According to such a configuration, heating based on the heating profile is not started when the suction device 100 is out of order, so it is possible to prevent inappropriate aerosol from being delivered to the user.
  • the vibration sensor 172 may detect the vibration frequency after the operation of the electromagnetic induction source 162 is controlled based on the heating profile.
  • the control unit 116 may supply weak electric power to the electromagnetic induction source 162 and cause the vibration sensor 172 to detect the vibration frequency, triggered by the end of heating based on the heating profile.
  • the state of the suction device 100 is determined immediately after the heating based on the heating profile is completed.
  • the control unit 116 attempts normalization processing, and prohibits heating when the state of the suction device 100 does not return to normal. Therefore, even if a puff request is detected next time, heating based on the heating profile is not performed, so it is possible to prevent inappropriate aerosol from being delivered to the user.
  • the vibration sensor 172 may detect the vibration frequency before and after the operation of the electromagnetic induction source 162 is controlled based on the heating profile. Then, the control unit 116 may determine the state of the suction device 100 based on the change in vibration frequency before and after the operation of the electromagnetic induction source 162 is controlled based on the heating profile. For example, the control unit 116 may determine that the state of the suction device 100 is abnormal when the amount of change in vibration frequency is equal to or greater than a predetermined threshold. Further, the control unit 116 may determine that the state of the suction device 100 is normal when the amount of change in vibration frequency is less than a predetermined threshold.
  • the control unit 116 attempts normalization processing, and prohibits heating when the state of the suction device 100 does not return to normal. Therefore, even if a puff request is detected next time, heating based on the heating profile is not performed, so it is possible to prevent inappropriate aerosol from being delivered to the user.
  • the suction device 100 may have a susceptor in addition to the housing section 140 .
  • the susceptor may be blade-shaped and arranged to protrude from the bottom 143 into the internal space 141 .
  • a blade-shaped susceptor is inserted into the stick-shaped substrate 150 . Therefore, it is possible to heat the stick-shaped substrate 150 from the inside by means of the induction-heated blade-shaped susceptor.
  • the fixing portion 149 is a member provided with a through hole, and may hold the accommodating portion 140 in a state in which the accommodating portion 140 passes through the through hole.
  • the fixed portion 149 may be configured as a heat insulating material that covers the entire side surface and bottom portion 143 of the housing portion 140 .
  • the vibration sensor 172 may detect information indicating the amplitude of the fixed portion 149 as the information on the magnetostriction of the housing portion 140, which is the susceptor.
  • the vibration sensor 172 may be placed on the susceptor to directly detect information regarding the vibration of the susceptor.
  • a series of processes by each device described in this specification may be implemented using software, hardware, or a combination of software and hardware.
  • a program that constitutes software is stored in advance in a recording medium (more specifically, a non-temporary computer-readable storage medium) provided inside or outside each device, for example.
  • a recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, a flash memory, or the like.
  • the above computer program may be distributed, for example, via a network without using a recording medium.
  • An aspiration device for producing an aerosol using a substrate containing an aerosol source comprising: an electromagnetic induction source that generates a varying magnetic field when alternating current is applied; a susceptor that generates heat to heat the base material when the fluctuating magnetic field penetrates; a detection unit that detects information about the magnetostriction of the susceptor that occurs when the fluctuating magnetic field enters the susceptor; a control unit that determines the state of the suction device based on information detected by the detection unit; suction device.
  • the detection unit detects information about vibration of a fixing part that fixes the susceptor to the suction device as information about magnetostriction of the susceptor.
  • the suction device according to (1) above. (3) The detection unit detects information indicating the frequency of the fixing unit as information about the magnetostriction of the susceptor. The suction device according to (2) above. (4) The detection unit is arranged on the fixing unit, The suction device according to (2) or (3) above. (5) The susceptor is an accommodating portion that accommodates the base material in an internal space, An end of the accommodating portion opposite to the opening through which the base material is inserted is connected to the fixing portion, The suction device according to any one of (2) to (4) above. (6) The fixing part is a plate-shaped member, The suction device according to any one of (2) to (5) above.
  • the control unit determines whether the state of the suction device is normal based on whether the information detected by the detection unit satisfies a predetermined condition.
  • the suction device according to any one of (1) to (6) above.
  • the control unit determines that the suction device has failed.
  • the control unit performs normalization processing for returning the state of the suction device to normal, and the state of the suction device is restored to normal even by the normalization processing. If it does not return, determine that the suction device has failed; The suction device according to (7) above.
  • the control unit as the normalization process, changing the natural frequency of an RLC circuit that includes the source of electromagnetic induction; Determining whether the state of the suction device has returned to normal by changing the natural frequency; one or more times The suction device according to (9) above. (11) When the control unit determines that the suction device has failed, it prohibits power supply to the electromagnetic induction source. The suction device according to any one of (8) to (10) above. (12) The control unit controls the operation of the electromagnetic induction source based on the heating profile, The detection unit detects information about the magnetostriction of the susceptor at a timing according to the heating profile. The suction device according to any one of (1) to (11) above.
  • the detection unit detects information about the magnetostriction of the susceptor while the operation of the electromagnetic induction source is controlled based on the heating profile.
  • the detection unit detects information about the magnetostriction of the susceptor before the operation of the electromagnetic induction source is controlled based on the heating profile.
  • the detection unit detects information about the magnetostriction of the susceptor after the operation of the electromagnetic induction source is controlled based on the heating profile.
  • the detection unit detects information about the magnetostriction of the susceptor before and after the operation of the electromagnetic induction source is controlled based on the heating profile
  • the control unit determines the state of the suction device based on a change in information regarding the magnetostriction of the susceptor before and after the operation of the electromagnetic induction source is controlled based on the heating profile.
  • the suction device according to any one of (12) to (15) above.
  • An aspiration device for producing an aerosol using a substrate containing an aerosol source comprising: an electromagnetic induction source that generates a varying magnetic field when alternating current is applied; a susceptor that generates heat to heat the base material when the fluctuating magnetic field penetrates; a detection unit that detects information about the magnetostriction of the susceptor that occurs when the fluctuating magnetic field enters the susceptor; a control unit that determines the state of the suction device based on information detected by the detection unit;
  • a substrate containing the aerosol source that is heated to generate the aerosol by a suction device comprising: (18)
  • a control method for controlling an aspiration device that generates an aerosol using a substrate containing an aerosol source comprising:
  • the suction device is an electromagnetic induction source that generates a varying magnetic field when alternating current is applied; a susceptor that generates heat to heat the base material when the fluctuating magnetic field penetrates; a detection unit that detects information about the magnetostriction of the
  • REFERENCE SIGNS LIST 100 suction device 111 power supply unit 112 sensor unit 113 notification unit 114 storage unit 115 communication unit 116 control unit 140 housing unit (susceptor) 141 Internal space 142 Opening 143 Bottom 149 Fixing part 150 Stick type base material 151 Base material part 152 Mouthpiece part 162 Electromagnetic induction source 163 Inverter circuit 164 RLC circuit 169 Drive circuit 171 Power sensor 172 Vibration sensor

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  • General Induction Heating (AREA)

Abstract

[Problème] Fournir une structure qui permet la surveillance d'un état d'un dispositif d'inhalation à chauffage par induction. [Solution] Un dispositif d'inhalation selon la présente invention est un dispositif d'inhalation qui génère un aérosol en utilisant un substrat contenant une source d'aérosol, le dispositif d'inhalation comprenant : une source d'induction électromagnétique qui génère un champ magnétique alternatif dans un boîtier dans lequel un courant alternatif est appliqué ; un suscepteur qui génère de la chaleur dans un cas d'intrusion du champ magnétique alternatif, et chauffe le substrat ; une unité de détection qui détecte des informations relatives à la magnétostriction du suscepteur se produisant lors de l'intrusion du suscepteur par le champ magnétique alternatif ; et une unité de commande qui détermine un état du dispositif d'inhalation sur la base d'informations détectées par l'unité de détection.
PCT/JP2021/031201 2021-08-25 2021-08-25 Dispositif d'inhalation, substrat et procédé de commande Ceased WO2023026408A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018091685A (ja) * 2016-12-01 2018-06-14 国立研究開発法人産業技術総合研究所 検査装置および検査方法
JP2019054820A (ja) * 2014-05-21 2019-04-11 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム エアロゾル形成基体を加熱するための誘導加熱装置
JP2019152455A (ja) * 2018-02-28 2019-09-12 国立大学法人東北大学 振動センサ
WO2020208769A1 (fr) * 2019-04-11 2020-10-15 株式会社 東芝 Dispositif de détection de contrainte, procédé de détection de contrainte et dispositif électrique
JP2021509806A (ja) * 2018-11-23 2021-04-08 ケイティー アンド ジー コーポレイション エアロゾル生成装置及びその動作方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019054820A (ja) * 2014-05-21 2019-04-11 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム エアロゾル形成基体を加熱するための誘導加熱装置
JP2018091685A (ja) * 2016-12-01 2018-06-14 国立研究開発法人産業技術総合研究所 検査装置および検査方法
JP2019152455A (ja) * 2018-02-28 2019-09-12 国立大学法人東北大学 振動センサ
JP2021509806A (ja) * 2018-11-23 2021-04-08 ケイティー アンド ジー コーポレイション エアロゾル生成装置及びその動作方法
WO2020208769A1 (fr) * 2019-04-11 2020-10-15 株式会社 東芝 Dispositif de détection de contrainte, procédé de détection de contrainte et dispositif électrique

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