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WO2025203251A1 - Dispositif de génération d'aérosol, procédé de traitement d'informations et programme - Google Patents

Dispositif de génération d'aérosol, procédé de traitement d'informations et programme

Info

Publication number
WO2025203251A1
WO2025203251A1 PCT/JP2024/012042 JP2024012042W WO2025203251A1 WO 2025203251 A1 WO2025203251 A1 WO 2025203251A1 JP 2024012042 W JP2024012042 W JP 2024012042W WO 2025203251 A1 WO2025203251 A1 WO 2025203251A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
aerosol
smoothing process
generating device
value
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.)
Pending
Application number
PCT/JP2024/012042
Other languages
English (en)
Japanese (ja)
Inventor
竜児 酒井
正博 中島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Priority to PCT/JP2024/012042 priority Critical patent/WO2025203251A1/fr
Publication of WO2025203251A1 publication Critical patent/WO2025203251A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

  • This disclosure relates to an aerosol generating device, an information processing method, and a program.
  • Aerosol generating devices that generate aerosols to be inhaled by users are widely used.
  • aerosol generating devices generate aerosols imparted with flavor components using a base material containing an aerosol source for generating aerosol and a flavor source for imparting flavor components to the generated aerosol. Users can enjoy the flavor by inhaling the aerosol imparted with flavor components generated by the aerosol generating device.
  • the action of a user inhaling the aerosol is hereinafter also referred to as puffing or puffing action.
  • Examples of devices classified as aerosol generating devices include heated tobacco products and electronic cigarettes, which are used instead of cigarettes, as well as nebulizers used for medical purposes. Heated tobacco products are a type of aerosol generating device that generates aerosol by heating an aerosol source.
  • Electronic cigarettes are a type of aerosol generating device that generates aerosol by atomizing a liquid aerosol source.
  • Patent Document 1 discloses a technology for detecting puffs based on changes in capacitance exceeding a certain threshold.
  • Patent Document 1 the technology disclosed in Patent Document 1 and other publications leaves room for improvement in the accuracy of the determination.
  • This disclosure has been made in light of the above problems, and its purpose is to provide a mechanism that can further improve the accuracy of judgments based on sensor values.
  • an aerosol generation device comprising: a storage unit that stores a substrate containing an aerosol source in an internal space; a load that generates energy for heating the aerosol source of the substrate stored in the storage unit; a sensor unit that continuously measures sensor values related to the aerosol generation device over time; and a control unit that determines the state of the aerosol generation device based on the sensor values measured by the sensor unit, wherein the control unit determines the state of the aerosol generation device by comparing the difference between a first value obtained by applying a first smoothing process to the sensor value and a second value obtained by applying a second smoothing process to the sensor value with a threshold, and an aerosol generation device is provided in which the response speed of the first smoothing process is different from the response speed of the second smoothing process.
  • Each of the first smoothing process and the second smoothing process may be one of a moving average, an exponential moving average, a weighted moving average, a low-pass filter, a high-pass filter, or a band-pass filter.
  • the first smoothing process may be a long-term moving average
  • the second smoothing process may be a short-term moving average that is calculated using a smaller number of samples than the first smoothing process.
  • the number of samples to be calculated in the first smoothing process may be twice the number of samples to be calculated in the second smoothing process.
  • the sensor unit may be a capacitance sensor, an air pressure sensor, a flow rate sensor, an ultrasonic sensor, an optical sensor, a temperature sensor, or a power sensor.
  • Y_long_ave is the long-term moving average of the true value Ym.
  • Figure 5 is a graph showing experimental results of the puff detection method according to this embodiment.
  • the horizontal axis of this graph represents time, and the vertical axis represents capacitance.
  • the graph shows the sensor value, short-term moving average, long-term moving average, the difference between the long-term and short-term moving averages, and the threshold. Note that this graph is a dual-axis graph in which the scales of the difference between the long-term and short-term moving averages and the threshold are different from the scales of the sensor value, short-term moving average, and long-term moving average.
  • FIG. 6 is a flowchart showing an example of the flow of the puff detection process executed by the aerosol generating device 100 according to this embodiment.
  • the control unit 116 acquires sensor values measured continuously over time by the sensor unit 112 (step S102). For example, the control unit 116 acquires time-series data on the capacitance of the internal space 141 of the storage unit 140 measured by a capacitance sensor.
  • step S106 determines that the control unit 116 has been inserted into the storage unit 140 (step S108).
  • step S106 determines that the control unit 116 is not inserted into the storage unit 140 (step S110).
  • control unit 116 controls processing according to the determination result (step S112). For example, if the control unit 116 determines that the stick-shaped substrate 150 has been inserted into the storage unit 140, it may start heating by the heating unit 121. On the other hand, if the control unit 116 determines that the stick-shaped substrate 150 has not been inserted into the storage unit 140, it may prohibit heating by the heating unit 121. With this configuration, it is possible to achieve both improved usability through the auto-start function and ensure safety by preventing empty heating.
  • the number of samples used to calculate the long-term moving average may be twice the number of samples used to calculate the short-term moving average.
  • taking the difference between the long-term moving average and the short-term moving average is equivalent to taking the moving average of the differentiated sensor values.
  • the differential of the capacitance indicates the rate of change of the capacitance, which is thought to correspond to the amount of aerosol inhaled by the user.
  • the control unit 116 may update the threshold based on the variance or standard deviation of the sensor value.
  • the control unit 116 may update the threshold based on the variance or standard deviation of the difference between the long-term moving average and the short-term moving average.
  • the control unit 116 may set any threshold that can detect outliers, assuming that the sensor value or the difference between the long-term moving average and the short-term moving average follows a normal distribution in a steady state.
  • control unit 116 may take advantage of the fact that the difference between the long-term moving average and the short-term moving average is zero in a steady state, and set the threshold to a constant multiple of the standard deviation of the difference between the long-term moving average and the short-term moving average (for example, three times if the steady state is within a 3 ⁇ interval).
  • the threshold can be updated at any time during the heating session. Updating the threshold makes it possible to effectively eliminate the effects of puff strength and noise from the heating unit 121.
  • the control unit 116 may update the number of samples used to calculate each of the long-term moving average and the short-term moving average. As one example, the control unit 116 may set the number of samples according to the length of the period during which it is determined that a puff has occurred, i.e., the length of a single puff by the user. With this configuration, it is possible to properly detect puffs whether the user puffs strongly and instantaneously or slowly and weakly. As another example, the control unit 116 may set the number of samples m and n based on the heating profile. With this configuration, it is possible to properly detect puffs regardless of the type of heating profile used.
  • control unit 116 determines whether or not a puff has been performed, but the present disclosure is not limited to such an example. That is, the control unit 116 only needs to determine the state of the aerosol generation device 100, and the state of the aerosol generation device 100 to be determined is not limited to whether or not a puff has been performed. Alternatively, the control unit 116 may determine whether or not the stick-shaped substrate 150 has been inserted into the storage unit 140 by comparing the difference between the long-term moving average and short-term moving average of the capacitance with a threshold value.
  • the stick-shaped substrate 150 contains an aerosol source with a high dielectric constant
  • the capacitance changes significantly and instantaneously.
  • the instantaneous change in capacitance associated with the insertion of the stick-shaped substrate 150 can be detected with high accuracy, making it possible to accurately determine whether or not the stick-shaped substrate 150 has been inserted.
  • the long-term moving average of the capacitance measured by the capacitance sensor described in the above embodiment is an example of a first value obtained by applying a first smoothing process to the sensor value.
  • the short-term moving average of the capacitance measured by the capacitance sensor is an example of a second value obtained by applying a second smoothing process to the sensor value.
  • the present disclosure is not limited to such examples.
  • each of the first smoothing process and the second smoothing process may be one of a moving average, exponential moving average, weighted moving average, low-pass filter, high-pass filter, or band-pass filter.
  • the first smoothing process and the second smoothing process only need to use different calculation intervals and have different response speeds.
  • the sensor unit 112 may be a capacitance sensor, air pressure sensor, flow sensor, ultrasonic sensor, optical sensor, temperature sensor, or power sensor. That is, the control unit 116 may determine the state of the aerosol generation device 100 by comparing the difference between a first value obtained by applying a first smoothing process to the sensor value measured by these sensors and a second value obtained by applying a second smoothing process that has a different response speed from the first smoothing process with a threshold value. Regardless of the sensor value measured by any sensor, it is possible to accurately determine the state of the aerosol generation device 100.
  • the sensor unit 112 may be a sensor that measures a parameter corresponding to the temperature at which the aerosol source is heated.
  • sensors include a sensor that measures the electrical resistance of the heating unit 121, which changes depending on the temperature of the heating unit 121, or a temperature sensor such as a thermistor that is placed in close proximity to the heating unit 121.
  • the temperature of the heating unit 121 changes over the long term even in a steady state, and also drops significantly instantaneously when a puff is performed.
  • the determination method according to this embodiment makes it possible to accurately determine whether a puff has been performed throughout the entire heating session.
  • the heating unit 121 described in the above embodiment is an example of a load that generates heat, which is the energy for heating the aerosol source of the stick-shaped substrate 150 housed in the housing unit 140.
  • the load is not limited to the heating unit 121. If the means for heating the aerosol source is induction heating, the load may be an induction coil that generates a magnetic field, which is the energy for induction heating a susceptor that is thermally close to the aerosol source.
  • the aerosol generating device 100 may also be configured as a so-called liquid atomization type aerosol generating device that generates an aerosol by heating and atomizing an aerosol source in the form of a liquid.
  • the technology disclosed herein can also be applied to liquid atomization type aerosol generating devices.
  • the series of processes performed by each device described herein may be implemented using software, hardware, or a combination of software and hardware.
  • the programs constituting the software are stored in advance, for example, on a recording medium (more specifically, a non-transitory storage medium readable by a computer) located inside or outside each device.
  • a recording medium more specifically, a non-transitory storage medium readable by a computer
  • Each program is then loaded into RAM (Random Access Memory) and executed by a processing circuit such as a CPU (Central Processing Unit) when executed by a computer controlling each device described herein.
  • Examples of the recording medium include a magnetic disk, optical disk, magneto-optical disk, and flash memory.
  • the computer programs may also be distributed over a network without using a recording medium.
  • the computer may be an application-specific integrated circuit (ASIC), a general-purpose processor that executes functions by loading a software program, or a computer on a server used in cloud computing.
  • ASIC application-specific integrated circuit
  • the series of processes performed by each device described herein may be centrally processed by a single computer, or distributed across multiple computers.
  • two or more communication means present in one device may be physically realized using a single medium.
  • An aerosol generating device comprising: a housing portion that houses a substrate containing an aerosol source in an internal space; a load that generates energy to heat the aerosol source of the substrate contained in the container; and a sensor unit that continuously measures a sensor value related to the aerosol generating device over time; a control unit that determines the state of the aerosol generation device based on the sensor value measured by the sensor unit; Equipped with the control unit determines the state of the aerosol generation device by comparing a difference between a first value obtained by applying a first smoothing process to the sensor value and a second value obtained by applying a second smoothing process to the sensor value with a threshold value; a response speed of the first smoothing process and a response speed of the second smoothing process are different; Aerosol generator.
  • Each of the first smoothing process and the second smoothing process is one of a moving average, an exponential moving average, a weighted moving average, a low-pass filter, a high-pass filter, and a band-pass filter.
  • the first smoothing process is a long-term moving average;
  • the second smoothing process is a short-term moving average calculated using a smaller number of samples than the first smoothing process.
  • the number of samples to be calculated in the first smoothing process is twice the number of samples to be calculated in the second smoothing process;
  • the sensor unit is a capacitance sensor, an air pressure sensor, a flow rate sensor, an ultrasonic sensor, an optical sensor, a temperature sensor, or a power sensor;
  • the aerosol generating device according to any one of (1) to (4).
  • the sensor unit is a capacitance sensor, The capacitance sensor measures the capacitance of the internal space of the storage unit.
  • the aerosol generating device according to any one of (1) to (4).
  • the sensor unit is a sensor that measures a parameter corresponding to a temperature to which the aerosol source is heated.
  • the aerosol generating device according to any one of (1) to (4).
  • the control unit determines whether the aerosol generated from the substrate has been inhaled.
  • the aerosol generating device according to any one of (1) to (7).
  • the control unit determines whether the substrate is inserted into the storage unit.
  • the aerosol generating device according to any one of (1) to (7).
  • the control unit updates the threshold value based on a variance or a standard deviation of the difference.
  • the control unit updates the threshold value based on a variance or a standard deviation of the sensor values.
  • a computer-implemented information processing method comprising: a housing portion that houses a substrate containing an aerosol source in an internal space; a load that generates energy to heat the aerosol source of the substrate contained in the container; and a sensor unit that continuously measures a sensor value related to the aerosol generating device over time; determining a state of the aerosol generating device based on the sensor value measured by the sensor unit of the aerosol generating device, Including, determining the state of the aerosol generation device by comparing a difference between a first value obtained by applying a first smoothing process to the sensor value and a second value obtained by applying a second smoothing process to the sensor value with a threshold value; Including, a response speed of the first smoothing process and a response speed of the second smoothing process are different; Information processing methods.
  • a program executed by a computer that controls an aerosol generating device includes: a housing portion that houses a substrate containing an aerosol source in an internal space; a load that generates energy to heat the aerosol source of the substrate contained in the container; and a sensor unit that continuously measures a sensor value related to the aerosol generating device over time; Equipped with The program causes the computer to: a control unit that determines the state of the aerosol generation device based on the sensor value measured by the sensor unit; the control unit determines the state of the aerosol generation device by comparing a difference between a first value obtained by applying a first smoothing process to the sensor value and a second value obtained by applying a second smoothing process to the sensor value with a threshold value; a response speed of the first smoothing process and a response speed of the second smoothing process are different; program.

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  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un mécanisme capable d'améliorer davantage la précision de détermination sur la base d'une valeur de capteur. La solution selon l'invention porte sur un dispositif de génération d'aérosol comprenant : une unité de stockage pour stocker un matériau de base contenant une source d'aérosol dans son espace interne ; une unité de capteur pour mesurer temporellement et en continu une valeur de capteur ; et une unité de commande pour déterminer l'état du dispositif de génération d'aérosol par comparaison d'une différence entre une première valeur et une seconde valeur avec une valeur seuil, la première valeur étant obtenue par application d'un premier traitement de lissage à la valeur de capteur et la seconde valeur étant obtenue par application d'un second traitement de lissage à la valeur de capteur. La vitesse de réponse du premier traitement de lissage et la vitesse de réponse du second traitement de lissage sont différentes l'une de l'autre.
PCT/JP2024/012042 2024-03-26 2024-03-26 Dispositif de génération d'aérosol, procédé de traitement d'informations et programme Pending WO2025203251A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/012042 WO2025203251A1 (fr) 2024-03-26 2024-03-26 Dispositif de génération d'aérosol, procédé de traitement d'informations et programme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/012042 WO2025203251A1 (fr) 2024-03-26 2024-03-26 Dispositif de génération d'aérosol, procédé de traitement d'informations et programme

Publications (1)

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WO2025203251A1 true WO2025203251A1 (fr) 2025-10-02

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Country Status (1)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200000146A1 (en) * 2018-06-27 2020-01-02 Juul Labs, Inc. Vaporizer device
WO2023127109A1 (fr) * 2021-12-28 2023-07-06 日本たばこ産業株式会社 Dispositif, procédé et programme de génération d'aérosol
JP2023531734A (ja) * 2020-06-30 2023-07-25 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 吸煙検出を有するエアロゾル発生装置および吸煙検出方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200000146A1 (en) * 2018-06-27 2020-01-02 Juul Labs, Inc. Vaporizer device
JP2023531734A (ja) * 2020-06-30 2023-07-25 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 吸煙検出を有するエアロゾル発生装置および吸煙検出方法
WO2023127109A1 (fr) * 2021-12-28 2023-07-06 日本たばこ産業株式会社 Dispositif, procédé et programme de génération d'aérosol

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