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WO2019066245A1 - Procédé de mise en œuvre d'une fonction de commande de rétroaction d'un appareil de génération d'aérosol, et appareil de génération d'aérosol - Google Patents

Procédé de mise en œuvre d'une fonction de commande de rétroaction d'un appareil de génération d'aérosol, et appareil de génération d'aérosol Download PDF

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Publication number
WO2019066245A1
WO2019066245A1 PCT/KR2018/009153 KR2018009153W WO2019066245A1 WO 2019066245 A1 WO2019066245 A1 WO 2019066245A1 KR 2018009153 W KR2018009153 W KR 2018009153W WO 2019066245 A1 WO2019066245 A1 WO 2019066245A1
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WIPO (PCT)
Prior art keywords
signal
heater
comparison
aerosol generating
switching operation
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/KR2018/009153
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English (en)
Korean (ko)
Inventor
이재민
임헌일
박상규
이승원
정형진
김영제
이현성
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.)
KT&G Corp
Original Assignee
KT&G Corp
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
Priority claimed from KR1020180092052A external-priority patent/KR102105548B1/ko
Application filed by KT&G Corp filed Critical KT&G Corp
Priority to CN201880047359.0A priority Critical patent/CN110892787B/zh
Priority to US16/645,194 priority patent/US11583007B2/en
Priority to EP18863473.7A priority patent/EP3691405B1/fr
Priority to JP2020501519A priority patent/JP6930691B2/ja
Publication of WO2019066245A1 publication Critical patent/WO2019066245A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices

Definitions

  • the present invention relates to a method of implementing a feedback control function of an aerosol generating apparatus and an invention relating to an aerosol generating apparatus according to the method and more particularly to a control apparatus which is essentially included in an aerosol generating apparatus, And to generate a control signal to be output at the next time point, thereby improving overall stability in the operation of the aerosol generating apparatus, and an aerosol generating apparatus according to the method.
  • the aerosol generating apparatus generally includes a heater for generating an aerosol by heating an aerosol generating substrate, and a separate main controller unit (MCU) is provided to control power supplied to the heater.
  • the main controller unit functions to control the overall operation of the aerosol generator in accordance with internally predefined logic, but the logic pre-defined in the main controller unit ensures that the operation of the aerosol generator is complete There is a problem that the main controller unit may be delayed or impossible to cope with when defects or malfunctions of specific components constituting the aerosol generating device occur.
  • the current supplied through the hot wire may not gradually flow according to the temperature setting state and may gradually increase. If the aerosol generator is left unattended without being noticed, the aerosol generator may be damaged by the heat emitted from the heat, or a fire may be generated due to this.
  • the heater of the aerosol generating apparatus is provided with a temperature sensor for sensing the temperature of the heater, and the temperature sensor periodically or non-periodically transmits the temperature value of the heater to the main controller unit so that the main controller unit So that it can be understood.
  • the main controller unit judges whether the temperature of the heater is not increased, There is a problem that it is difficult to determine the reason why the temperature is not detected due to a defect in the temperature sensor.
  • An object of the present invention is to provide an aerosol generating apparatus capable of quickly responding to a malfunction of an aerosol generating apparatus through a feedback control function.
  • an apparatus for generating an aerosol comprising: a heater for generating an aerosol by heating an aerosol generating substrate; A control unit for controlling power supplied to the heater by the battery based on the control signal; A switch for performing a switching operation according to the control signal to supply power to the heater; And a comparison signal calculation unit for calculating a comparison target signal by receiving the signal by the switching operation, wherein when the comparison value calculated by comparing the comparison target signal with the reference signal exceeds a preset range And a cut-off signal for stopping the switching operation of the switch is generated.
  • a method of implementing a feedback control function of an aerosol generating apparatus comprising: generating a control signal for controlling a power of a battery supplied to a heater; step; A control signal transmitting step in which the generated control signal is transmitted to a switch performing a switching operation; A comparison signal calculation step of receiving a signal according to the switching operation and calculating a comparison target signal; And a cut-off signal generating step of generating a cut-off signal for stopping the switching operation of the switch when the comparison value calculated by comparing the comparison target signal with the reference signal exceeds a predetermined range.
  • An embodiment of the present invention can provide a computer-readable recording medium storing a program for implementing the method.
  • a user using the aerosol generating device can quickly find a functional abnormality in the aerosol generating device and can quickly repair it.
  • FIG. 1 to 3 are views showing examples in which a cigarette is inserted into an aerosol generating apparatus.
  • FIG. 5 is a diagrammatic representation of a block diagram of an example of an aerosol generating device according to the present invention.
  • FIG. 6 is a diagram schematically showing an example of the comparison signal calculating unit.
  • FIG. 7 is a diagram showing an example of a control signal generated by the control unit.
  • FIG. 8 is a diagram showing an example of a comparison object signal.
  • FIG. 9 shows a flow diagram of an example of a method for implementing the feedback control function of an aerosol generating device in accordance with an embodiment of the present invention.
  • an apparatus for generating an aerosol comprising: a heater for generating an aerosol by heating an aerosol generating substrate; A controller for generating a control signal for controlling power supplied to the heater; A switch for performing a switching operation according to the control signal to supply power to the heater; And a comparison signal calculation unit for calculating a comparison target signal by receiving the signal by the switching operation, wherein when the comparison value calculated by comparing the comparison target signal with the reference signal exceeds a preset range And a cut-off signal for stopping the switching operation of the switch is generated.
  • control signal may be a digital pulse width modulation signal.
  • the reference signal is a pulse width modulation signal
  • the comparison object signal is a reverse pulse width modulation signal
  • the comparison value is a duty ratio of the pulse width modulation signal and the reverse pulse width modulation signal
  • the comparison signal calculator may include: an RC filter unit that receives the signal by the switching operation and converts the signal into a triangular wave signal; And a DC converting unit converting the converted triangular wave signal into an analog DC signal, wherein the controller generates a cutoff signal based on a result of comparing the converted analog DC signal with the reference signal, can do.
  • the comparison signal calculation unit may include: a voltage output sensor for sensing a temperature of the heater and outputting a heater voltage proportional to a resistance value of the heater; And an A / D converter for converting the output heater voltage into a digital value, wherein when the comparison value calculated by comparing the converted heater voltage with a predetermined voltage value exceeds a predetermined range, And a cut-off signal for stopping the switching operation is generated.
  • the comparison signal calculator may be an integrator that receives the signal by the switching operation and outputs an integration result signal, and the comparison value may be an integration result of the duty ratio of the control signal And a duty ratio of the signal.
  • the predetermined range may be 0.7 to 1.3.
  • the switch may be a field effect transistor (FET) that performs on-off operation (ON-OFF) in accordance with the control signal.
  • FET field effect transistor
  • the apparatus may further include a regulator for maintaining the output voltage of the battery at a constant level.
  • a method of implementing a feedback control function of an aerosol generating apparatus comprising: generating a control signal for controlling a power of a battery supplied to a heater; step; A control signal transmitting step in which the generated control signal is transmitted to a switch performing a switching operation; A comparison signal calculation step of receiving a signal according to the switching operation and calculating a comparison target signal; And a cut-off signal generating step of generating a cut-off signal for stopping the switching operation of the switch when the comparison value calculated by comparing the comparison target signal with the reference signal exceeds a predetermined range.
  • control signal may be a digital pulse width modulation signal.
  • the reference signal is a pulse width modulated signal
  • the comparison signal is a reverse pulse width modulated signal
  • the comparison value is a pulse width modulated signal and a reverse pulse width
  • the comparing signal calculating step may include: a triangle wave converting step of converting the signal by the switching operation into a triangular wave signal through an RC filter; And a DC converting step of converting the converted triangle wave signal into an analog DC signal, wherein the cut-off signal generating step generates a cut-off signal based on a result of comparing the converted analog DC signal with the reference signal . ≪ / RTI >
  • the comparing signal calculating step may include: a heater voltage output step of sensing a temperature of the heater and outputting a heater voltage proportional to a resistance value of the heater; And an A / D converting step of converting the output heater voltage into a digital value, wherein the cut-off signal generating step comprises: when the comparison value calculated by comparing the converted heater voltage with a predetermined voltage value exceeds a preset range And a cut-off signal for stopping the switching operation of the switch is generated.
  • the comparison signal calculating step may include receiving a signal according to the switching operation and outputting an integration result signal, wherein the comparison value is a duty ratio of the output integration result signal with respect to a duty ratio of the control signal . ≪ / RTI >
  • the predetermined range may be 0.7 to 1.3.
  • the switch may be a field effect transistor (FET) that performs an ON-OFF operation according to the control signal.
  • FET field effect transistor
  • the method may further include a voltage maintaining step of keeping the output voltage of the battery constant.
  • An embodiment of the present invention can provide a computer-readable recording medium storing a program for implementing the method.
  • FIG. 1 to 3 are views showing examples in which a cigarette is inserted into an aerosol generating apparatus.
  • an aerosol generating apparatus 10 includes a battery 120, a control unit 110, and a heater 130. Referring to FIGS. 2 and 3, the aerosol generating apparatus 10 further includes a vaporizer 180. In addition, the cigarette 200 can be inserted into the inner space of the aerosol generating apparatus 10.
  • the aerosol generating apparatus 10 shown in Figs. 1 to 3 is illustrated with components associated with the present embodiment. Therefore, it will be understood by those skilled in the art that other general components other than the components shown in Figs. 1 to 3 can be further included in the aerosol generating apparatus 10 .
  • FIGS. 2 and 3 illustrate that the apparatus 130 is included in the aerosol generating apparatus 10, but the heater 130 may be omitted if necessary.
  • a battery 120, a control unit 110, and a heater 130 are arranged in a line.
  • the battery 120, the control unit 110, the vaporizer 180, and the heater 130 are arranged in a line.
  • a vaporizer 180 and a heater 130 are shown arranged in parallel.
  • the internal structure of the aerosol generating apparatus 10 is not limited to those shown in Figs. In other words, according to the design of the aerosol generating apparatus 10, the arrangement of the battery 120, the control unit 110, the heater 130 and the vaporizer 180 may be changed.
  • the aerosol generating device 10 When the cigarette 200 is inserted into the aerosol generating device 10, the aerosol generating device 10 operates the heater 130 and / or the vaporizer 180 so that the cigarette 200 and / The aerosol can be generated. The aerosol generated by the heater 130 and / or the vaporizer 180 passes through the cigarette 200 and is delivered to the user.
  • the aerosol generating apparatus 10 can heat the heater 130 even when the cigarette 200 is not inserted into the aerosol generating apparatus 10.
  • the battery 120 supplies the power used to operate the aerosol generating device 10.
  • the battery 120 can supply power to the heater 130 or the vaporizer 180 to be heated, and can supply the power required for the controller 110 to operate.
  • the battery 120 can supply power required for operation of a display, a sensor, a motor, and the like installed in the aerosol generating apparatus 10.
  • the control unit 110 controls the operation of the aerosol generating apparatus 10 as a whole. Specifically, the control unit 110 controls the operation of not only the battery 120, the heater 130, and the vaporizer 180, but also other components included in the aerosol generating apparatus 10. The controller 110 may also check the status of each of the configurations of the aerosol generator 10 to determine whether the aerosol generator 10 is operational.
  • the control unit 110 includes at least one processor.
  • a processor may be implemented as an array of a plurality of logic gates, or may be implemented as a combination of a general purpose microprocessor and a memory in which a program executable in the microprocessor is stored. It will be appreciated by those skilled in the art that the present invention may be implemented in other forms of hardware.
  • the heater 130 may be heated by the power supplied from the battery 120. [ For example, when a cigarette is inserted into the aerosol generating apparatus 10, the heater 130 may be located outside the cigarette. Thus, the heated heater 130 can raise the temperature of the aerosol product in the cigarette.
  • the heater 130 may be an electrically resistive heater.
  • the heater 130 includes an electrically conductive track, and the heater 130 can be heated as current flows through the electrically conductive track.
  • the heater 130 is not limited to the above-described example, and can be applied without limitation as long as it can be heated to a desired temperature.
  • the desired temperature may be preset in the aerosol generating apparatus 10, or may be set to a desired temperature by the user.
  • the heater 130 may be an induction heating type heater.
  • the heater 130 may include an electrically conductive coil for heating the cigarette by an induction heating method, and the cigarette may include a susceptor that can be heated by an induction heating heater.
  • the heater 130 may include a tubular heating element, a plate-like heating element, a sinking heating element, or a bar-shaped heating element, and may be disposed inside or outside the cigarette 200 It can be heated.
  • a plurality of heaters 130 may be disposed in the aerosol generating apparatus 10. At this time, the plurality of heaters 130 may be disposed inside the cigarette 200, or may be disposed outside the cigarette 200. In addition, some of the plurality of heaters 130 may be disposed to be inserted into the cigarette 200, and the rest may be disposed outside the cigarette 200. Further, the shape of the heater 130 is not limited to the shapes shown in Figs. 1 to 3, and can be formed into various shapes.
  • the vaporizer 180 may generate an aerosol by heating the liquid composition, and the generated aerosol may be delivered to the user through the cigarette 200.
  • the aerosol generated by the vaporizer 180 can move along the airflow passage of the aerosol generating device 10, and the airflow passage can cause the aerosol generated by the vaporizer 180 to pass through the cigarette to the user Lt; / RTI >
  • the vaporizer 180 may include, but is not limited to, a liquid reservoir, a liquid delivery means, and a heating element.
  • the liquid reservoir, the liquid delivery means and the heating element may be included in the aerosol generating device 10 as an independent module.
  • the liquid reservoir can store the liquid composition.
  • the liquid composition may be a liquid comprising a tobacco-containing material comprising a volatile tobacco flavor component, or may be a liquid comprising a non-tobacco substance.
  • the liquid reservoir may be fabricated to be removable from the vaporizer 180 or may be fabricated integrally with the vaporizer 180.
  • the liquid composition may comprise water, solvent, ethanol, plant extract, flavoring, flavoring, or a mixture of vitamins.
  • the fragrance may include, but is not limited to, menthol, peppermint, spearmint oil, various fruit flavors, and the like.
  • Flavoring agents may include ingredients that can provide a variety of flavors or flavors to the user.
  • the vitamin mixture may be a mixture of at least one of vitamin A, vitamin B, vitamin C and vitamin E, but is not limited thereto.
  • the liquid composition may comprise an aerosol forming agent such as glycerin and propylene glycol.
  • the liquid delivery means may deliver the liquid composition of the liquid reservoir to the heating element.
  • the liquid delivery means can be, but is not limited to, wick such as cotton fibers, ceramic fibers, glass fibers, porous ceramics.
  • the heating element is an element for heating the liquid composition delivered by the liquid delivery means.
  • the heating element may be, but is not limited to, metallic hot wire, metal hot plate, ceramic heater, and the like.
  • the heating element may be composed of a conductive filament, such as a nichrome wire, and may be disposed in a structure wound on the liquid transfer means. The heating element can be heated by current supply and can transfer heat to the liquid composition in contact with the heating element to heat the liquid composition. As a result, aerosols can be generated.
  • the vaporizer 180 may be referred to as a cartomizer or an atomizer, but is not limited thereto.
  • the aerosol generating apparatus 10 may further include general configurations other than the battery 120, the control unit 110, the heater 130, and the vaporizer 180.
  • the aerosol generating apparatus 10 may include a motor for outputting visual information and / or a display for outputting tactile information.
  • the aerosol generating apparatus 10 may include at least one sensor (a puff detection sensor, a temperature detection sensor, a cigarette insertion detection sensor, etc.).
  • the aerosol generating apparatus 10 can be constructed in such a structure that external air can be introduced into the cigarette 200 even when the cigarette 200 is inserted therein, or the internal gas can flow out.
  • the aerosol generating apparatus 10 may form a system together with a separate cradle.
  • the cradle may be used to charge the battery 120 of the aerosol generating device 10.
  • the heater 130 may be heated while the cradle and the aerosol generating apparatus 10 are coupled.
  • the cigarette 200 may be similar to a typical soft cigarette.
  • the cigarette 200 may be divided into a first portion including an aerosol generating material and a second portion including a filter and the like.
  • the aerosol generating material may be contained in the second portion of the cigarette 200.
  • an aerosol product made in the form of granules or capsules may be inserted into the second part.
  • the entire first part can be inserted into the inside of the aerosol generating apparatus 10 and the second part can be exposed to the outside.
  • only part of the first part may be inserted into the inside of the aerosol generating apparatus 10, and part of the entire first part and part of the second part may be inserted.
  • the user can inhale the aerosol from the mouth portion of the second portion. At this time, the aerosol is generated by passing the outside air through the first portion, and the generated aerosol passes through the second portion to the user's mouth.
  • the outside air may be introduced through at least one air passage formed in the aerosol generating apparatus 10.
  • the opening and closing of the air passage formed in the aerosol generating apparatus 10 and / or the size of the air passage can be controlled by the user. Accordingly, the amount of smoke, the sense of smell, and the like can be controlled by the user.
  • the outside air may be introduced into the interior of the cigarette 200 through at least one hole formed in the surface of the cigarette 200.
  • FIG. 4 is a view showing an example of a cigarette.
  • the cigarette 200 includes a cigarette rod 210 and a filter rod 220.
  • the first portion 210 described above with reference to FIGS. 1-3 includes a tobacco rod 210 and the second portion 220 includes a filter rod 220.
  • the filter rod 220 is shown as a single segment, but is not limited thereto.
  • the filter rod 220 may be composed of a plurality of segments.
  • the filter rod 220 may include a first segment that cools the aerosol and a second segment that filters certain components contained in the aerosol.
  • the filter rod 220 may further include at least one segment that performs other functions.
  • the cigarette 200 may be packaged by at least one wrapper 240.
  • the wrapper 240 may be formed with at least one hole through which the outside air flows or the inside gas flows out.
  • the cigarette 200 may be packaged by one wrapper 240.
  • the cigarette 200 may be overlaid by two or more wrappers 240.
  • the tobacco rod 210 may be packaged by a first wrapper, and the filter rod 220 may be packaged by a second wrapper. Then, the tobacco rod 210 and the filter rod 220 packaged by individual wrappers are combined, and the entire cigarette 200 can be repackaged by the third wrapper.
  • each of the tobacco rod 210 or the filter rod 220 is comprised of a plurality of segments, each segment can be packaged by a separate wrapper. Then, the entire cigarette 200 to which the segments wrapped by the individual wrappers are coupled can be repackaged by another wrapper.
  • the tobacco rod 210 comprises an aerosol generating material.
  • the aerosol producing material may include, but is not limited to, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol and oleyl alcohol.
  • the tobacco rod 210 may contain other additives such as flavorings, wetting agents and / or organic acids.
  • the tobacco rod 210 can be added to the tobacco rod 210 by spraying the tobacco rod 210 with a remedy such as menthol or a moisturizer.
  • the tobacco rod 210 may be manufactured in various ways.
  • the tobacco rod 210 may be fabricated from a sheet or from a strand.
  • the tobacco rod 210 may be made of each chopped tobacco sheet.
  • the tobacco rod 210 may be surrounded by a thermal conductive material.
  • the thermal conductive material may be, but is not limited to, a metal foil such as an aluminum foil.
  • the thermal conductive material surrounding the tobacco rod 210 can evenly disperse the heat transferred to the tobacco rod 210 to improve the thermal conductivity applied to the tobacco rod, thereby improving the taste of the cigarette .
  • the heat conducting material surrounding the tobacco rod 210 may serve as a susceptor heated by an induction heating heater.
  • the tobacco rod 210 may further include an additional susceptor in addition to the heat conduction material surrounding the outside.
  • the filter rod 220 may be a cellulose acetate filter.
  • the shape of the filter rod 220 is not limited.
  • the filter rod 220 may be a cylindrical rod or a tubular rod including a hollow therein.
  • the filter rod 220 may be a recessed type rod. If the filter rod 220 comprises a plurality of segments, at least one of the plurality of segments may be fabricated in a different shape.
  • the filter rod 220 may be made to produce flavor.
  • a reflux liquid may be injected into the filter rod 220, and a separate fiber coated with the reflux liquid may be inserted into the interior of the filter rod 220.
  • the filter rod 220 may include at least one capsule 230.
  • the capsule 230 may perform a function of generating a flavor or a function of generating an aerosol.
  • the capsule 230 may be a structure in which a liquid containing a perfume is wrapped in a film.
  • the capsule 230 may have a spherical or cylindrical shape, but is not limited thereto.
  • the cooling segment may be made of a polymeric material or a biodegradable polymeric material.
  • the cooling segment may be made of pure polylactic acid alone, but is not limited thereto.
  • the cooling segment may be made of a cellulose acetate filter having a plurality of holes.
  • the cooling segment is not limited to the above-described example, and can be applied without restriction if it can perform the function of cooling the aerosol.
  • the cigarette 200 may further include a front end filter.
  • the pre-stage filter is located at one side of the tobacco rod 210 opposite to the filter rod 220.
  • the shear filter can prevent the tobacco rod 210 from escaping to the outside and prevent the aerosol liquefied from the tobacco rod 210 from flowing into the aerosol generating device (10 in Figs. 1 to 3) during smoking have.
  • FIG. 5 is a diagrammatic representation of a block diagram of an example of an aerosol generating device according to the present invention.
  • an apparatus 10 for generating aerosols includes a controller 110, a battery 120, a heater 130, a pulse width modulation processing unit 140, a display unit 150, a motor 160, A storage device 170, a switch 185, and a comparison signal calculation unit 190.
  • a controller 110 for generating aerosols according to the present invention includes a controller 110, a battery 120, a heater 130, a pulse width modulation processing unit 140, a display unit 150, a motor 160, A storage device 170, a switch 185, and a comparison signal calculation unit 190.
  • the control unit 110 includes a battery 120, a heater 130, a pulse width modulation processing unit 140, a display unit 150, a motor 160, a storage device 170, The switch 185, and the comparison signal calculator 190 as a whole.
  • the control unit 110 includes a communication unit (not shown) capable of performing communication with an external communication device such as a user terminal, an input receiving unit (Not shown). 5, the controller 110 may further include a module for performing a proportional-plus-integral derivative control (PID) on the heater 130.
  • PID proportional-plus-integral derivative control
  • the battery 120 supplies power to the heater 130 and the magnitude of the power supplied to the heater 130 can be adjusted by the control signal generated by the controller 110.
  • a regulator may be included between the controller 110 and the battery 120 to maintain the voltage of the battery constant.
  • the heater 130 When an electric current is applied, the heater 130 generates heat by the intrinsic resistance, and when the heated heater 130 contacts (joins) the aerosol generating substrate, an aerosol may be generated.
  • the pulse width modulation processing unit 140 controls the power supplied to the heater 130 by the control unit 110 through a method of transmitting a pulse width modulation (PWM) signal to the heater 130.
  • PWM pulse width modulation
  • the PWM signal output from the pulse width modulation processing unit 140 may be a digital pulse width modulation signal (Digital PWM Signal) Lt; / RTI >
  • the display unit 150 visually outputs various alarm messages generated by the aerosol generating apparatus 10 so that the user who uses the aerosol generating apparatus 10 can confirm the alarm messages.
  • the user can check the battery power shortage message or the heater overheat warning message output to the display unit 150 and take appropriate measures before the operation of the aerosol generator 10 is stopped or the aerosol generator 10 is damaged .
  • the motor 160 is driven by the control unit 110 to allow the user to recognize through the tactile sense that the aerosol generating apparatus 10 is ready for use.
  • the storage device 170 stores various information for appropriately controlling the power supplied to the heater 130 by the control unit 110 to provide various flavors to the user using the aerosol generating apparatus 10.
  • the storage device 170 may be a nonvolatile memory such as a flash memory or a volatile memory that temporarily stores data only in a communication mode to secure a faster data input / output (I / O) rate .
  • the switch 185 performs a switching operation so that the control signal (PWM signal) generated by the controller 110 or the pulse width modulation processor 140 is transmitted to the heater 130.
  • PWM signal the control signal
  • the switching operation of the switch 185 includes not only an ON-OFF operation in which the heater is disconnected or disconnected, but also an operation in which at least three terminals come into contact with each other at different points of time to constitute an open circuit or a closed circuit can do.
  • the switch 185 may further include a signal reverser for inverting a signal received from the control unit 110 or the pulse width modulation processing unit 140 .
  • the switch 185 may be a field effect transistor (FET) that performs on / off operation according to a control signal.
  • FET field effect transistor
  • the comparison signal calculation unit 190 receives a signal corresponding to the switching operation of the switch 185, And transmits the calculated signal to the control unit 110.
  • the control unit 110 may receive the comparison target signal and may store the information stored in the comparison target signal in the storage device 170 as time series information.
  • the comparison signal calculation unit 190 may be implemented in a form included in the control unit 110.
  • the control unit 110, the pulse width modulation processing unit 140 and the comparison signal calculation unit 190 may include at least one processor or at least one processor. Accordingly, the control unit 110, the pulse width modulation processing unit 140, and the comparison signal calculation unit 190 can be driven in a form included in other hardware devices such as a microprocessor or a general-purpose computer system.
  • control unit 110 may generate a cutoff signal for stopping the switching operation of the switch 185 when the comparison value calculated by comparing the comparison target signal with the reference signal exceeds a predetermined range.
  • control unit 110 receives the comparison object signal from the comparison signal calculation unit 190.
  • the comparison target signal received by the control unit 110 is a feedback signal for the control signal transmitted from the control unit 110 or the pulse width modulation processing unit 140 so that the control unit 110 can be included in the aerosol generation apparatus 10 And includes information necessary for controlling each configuration.
  • the reference signal refers to information of a signal previously set in the control unit 110 or stored in the storage unit 170 in order to be compared with the comparison object signal, Signal. For example, when the control unit 110 outputs a control signal at time t1, a comparison object signal is calculated at time t2, and a comparison object signal is received at the control unit 110 at time t3, .
  • the comparison value means a specific value that the control unit 110 compares the comparison target signal with the reference signal.
  • the comparison value includes a difference value of the amplitude of the comparison target signal and the reference signal, a difference value of the frequency, (difference value of duty ratio), and the like.
  • the predetermined range is information previously stored in the controller 110 or the storage device 170 and is defined as a value determined experimentally.
  • the control unit 110 generates a cut-off signal of the switch 185 to stop the switching operation of the switch 185 when the comparison value exceeds the preset range .
  • the cutoff signal means a signal for turning off the switch 185 to cut off the power applied from the battery 120 to the heater 130.
  • the compared signal may be a reverse pulse width modulated signal.
  • the controller 110 compares the duty ratios of the pulse width modulation signal, which is the control signal, and the reverse pulse width modulation signal, which is the comparison object signal, to calculate a comparison value, The cut-off signal can be generated. A further description of the reverse pulse width modulation signal will be described later in FIGS. 7 and 8. FIG.
  • FIG. 6 is a diagram schematically showing an example of the comparison signal calculating unit.
  • the comparison signal calculation unit 190 may include an RC filter unit 191, a DC conversion unit 193, a voltage output sensor 195, an AD converter 197, and an integration processing unit 199 DC converter 193, voltage output sensor 195, AD converter 197, and integration processing unit 199 in the comparison signal calculating unit 190 according to the embodiment, At least one of them may be omitted.
  • the RC filter unit 191 includes an RC circuit composed of a resistance and a capacitor and receives a signal by the switching operation of the switch 185 and converts the signal into a triangular wave.
  • the signal due to the switching operation of the switch 185 may be a digital pulse width modulation (PWM) signal.
  • the arrangement of the resistors and capacitors included in the RC filter unit 191 may be composed of at least two or more capacitors as a predetermined arrangement.
  • the RC filter unit 191 may include a CRC filter in which one resistor is connected in series between two capacitors whose one pole is grounded.
  • DC converter 193 converts the triangular wave signal converted by the RC filter 191 into an analog direct current (DC) signal.
  • DC converter 193 is transmitted as a comparison object signal to the control unit 110.
  • the control unit 110 compares the converted analog DC signal with a reference signal to calculate a comparison value, If it exceeds the preset range, a cutoff signal can be generated.
  • the voltage output sensor 195 senses the temperature of the heater and outputs a heater voltage proportional to the resistance value of the heater.
  • the voltage output sensor 195 first senses the temperature of the heater and determines the resistance value of the heater.
  • Equation (1) is an example of a mathematical expression used by the voltage output sensor 195 for sensing the temperature of the heater and determining the resistance value of the heater.
  • R (T) is the resistance of the heater at the temperature T
  • R 0 is the initial heater resistance
  • T is the current temperature of the heater
  • T 0 is the initial temperature of the heater
  • a is the temperature coefficient of the heater.
  • the voltage output sensor 195 senses the temperature of the heater and, when the resistance value of the heater is recognized, outputs a voltage having a magnitude proportional to the resistance value.
  • the AD converter 197 converts the analog voltage of the heater output by the voltage output sensor 195 into a digital value.
  • the control unit 110 compares the digital voltage of the heater output from the AD converter 197 with a predetermined voltage value to calculate a comparison value and stops the switching operation of the switch 185 when the comparison value exceeds a predetermined range Thereby generating a cutoff signal. At this time, the digital voltage of the heater output from the AD converter 197 becomes the comparison object signal, and the predetermined voltage value becomes the reference signal.
  • the integration processing unit 199 receives the voltage signal as an input and outputs an integration result signal of the voltage signal.
  • the signal received by the integration processing unit 199 may be a signal according to the switching operation of the switch 185. If the voltage signal received by the integration processing unit 199 is a PWM signal as shown in FIG. 7, And becomes a voltage signal having a triangular wave form corresponding to the PWM signal.
  • the control unit 110 may calculate the duty ratio of the integration result signal with respect to the duty ratio of the control signal as a comparison value, and generate the cut-off signal when the comparison value exceeds the predetermined range.
  • FIG. 7 is a diagram showing an example of a control signal generated by the control unit.
  • control signal is a pulse width modulation signal (PWM signal) and has a constant duty ratio.
  • Equation (2) is a mathematical expression that defines the effective voltage V eff of the battery 120.
  • V B denotes a battery voltage
  • T 1 and T 2 denote specific time points on the time axis.
  • the effective voltage V eff between time intervals T 2 and T 1 at a particular point in time can be kept constant by adjusting the duty ratio D even if the battery voltage V B falls.
  • Equation (3) defines a duty ratio of the control signal.
  • the duty ratio means a ratio of a current flowing time to a sum of a current flowing time and a current non-flowing time when a current is supplied to a specific element or module in a periodic pulse form.
  • the duty ratio can be defined for voltage as well as current.
  • T 1 (710) is a time point at which a control signal for the heater is transmitted to the heater
  • T 2 (730) is a time point at which one cycle of the control signal ends
  • T 3 Means a time point at which the current (voltage) is supplied to the heater and then disconnected.
  • the control signal is generated so as to maintain the predetermined voltage V B for a predetermined time (T 2 - T 1 ) in accordance with the duty ratio calculated by the control unit 110.
  • FIG. 8 is a diagram showing an example of a comparison object signal.
  • the comparison target signal of FIG. 8 refers to a signal whose pulse width modulation signal described with reference to FIG. 7 is inverted while passing through the switch 185 or the comparison signal calculating unit 190. If the duty ratio of the control signal is 50% and the signal to be compared is fed back to the control unit 110 by the feedback of the control signal, the duty ratio according to Equation 3 can be applied to the inverted signal, The duty ratio is the same as the duty ratio of the control signal.
  • the control unit 110 calculates the difference between the duty ratio of the control signal and the comparison target signal as a comparison value, and generates a cutoff signal when the calculated comparison value exceeds a preset range.
  • the comparison value calculated by the control unit 110 may be a duty ratio of the comparison object signal with respect to the duty ratio of the control signal.
  • Equation (4) shows an example of an equation used by the control unit 110 to calculate a comparison value.
  • C denotes a comparison value
  • D 1 denotes a duty ratio of the control signal
  • D 2 denotes a duty ratio of the comparison object signal.
  • (4) is an example of an equation that can be used by the control unit 110 in calculating the comparison value, the control unit 110 may calculate the comparison value And determine whether to generate the cutoff signal based on the calculated comparison value.
  • the controller 110 calculates a comparison value, and then determines whether the comparison value exceeds a predetermined range.
  • the predetermined range may be 0.7 to 1.3.
  • the control unit 110 may determine whether the comparison value exceeds 0.8 to 1.2 and generate a cutoff signal.
  • the predetermined range is preliminarily applied to the integration processing unit 199, and the integration result signal is pre-
  • the controller 110 receives the integration result signal, determines whether the control signal has an error by a predetermined range, and determines whether to generate the cutoff signal.
  • the comparison signal calculating unit 190 is an integrator including the integration processing unit 199
  • the disconnection of the heater 130 of the aerosol generating apparatus 10 can be accurately performed Can be detected. For example, if the temperature of the heater does not change even though the user has applied an input to the heater heating button of the aerosol generating apparatus 10 to inhale the aerosol, the heater may be broken or the temperature sensor of the heater may have failed .
  • the control unit 110 receives the integration result signal as a result of transmitting the control signal to the integrator, calculates a comparison value according to the duty ratio of the control signal and the integration result signal according to Equation (4) And if it does not exceed the predetermined range, it can be determined that the heater is not broken. If the comparison value exceeds the predetermined range, the control unit 110 determines that the heater is disconnected and transmits the cutoff signal, thereby preventing unnecessary switching operation of the switch 185 and minimizing the waste of the battery 120.
  • FIG. 9 shows a flow diagram of an example of a method for implementing the feedback control function of an aerosol generating device in accordance with an embodiment of the present invention.
  • the method according to FIG. 9 can be implemented by the aerosol generating apparatus 10 according to FIG. 5, and will be described with reference to FIG. 5. The contents already described in FIG. 5 will not be described below.
  • the control unit 110 generates a control signal for controlling the power of the battery (S910).
  • the control unit 110 transmits the control signal generated in step S910 to the switch (S920).
  • the comparison signal calculating unit 190 receives the signal corresponding to the switching operation of the switch 185 and calculates the comparison target signal (S930).
  • the signal according to the switching operation is a signal that the control signal supplies to the heater (meaning the value of T 1 (710) to T 3 (750) in FIG. 7) or when separated by a signal indicating the voltage of 0 (Fig. 7 means the value of T 3 (750) to T 2 (730)) according to the PWM signal characteristic, it means for the latter, and the switch 185 is signal inverting 8 and transmits the signal to the comparison signal calculating unit 190.
  • FIG. 7 means the value of T 3 (750) to T 2 (730)
  • the control unit 110 compares the comparison target signal with the reference signal to calculate a comparison value (S940).
  • the control unit 110 determines whether the comparison value calculated in step S940 exceeds a preset range (S950).
  • the controller 110 may generate a cutoff signal to interrupt the switching operation of the switch 185 and transmit the cutoff signal to the switch 185 (S960).
  • the switch 185 in step S960 may be a FET.
  • a control signal outputted from a heating type aerosol generating device which essentially involves a heater, is digitally processed using a feedback function, so that a moment when a high voltage is instantaneously input can be accurately grasped, It is possible to protect various components constituting the apparatus.
  • the apparatus for generating aerosol according to the present invention can accurately determine whether a heater is disconnected or a temperature sensor provided in a heater is broken by controlling various signals through a feedback control method while incorporating an integrator circuit.
  • the embodiments of the present invention described above can be embodied in the form of a computer program that can be executed on various components on a computer, and the computer program can be recorded on a computer-readable medium.
  • the medium may be a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical recording medium such as CD-ROM and DVD, a magneto-optical medium such as a floptical disk, , A RAM, a flash memory, and the like, which are specifically configured to store and execute program instructions.
  • the computer program may be designed and configured specifically for the present invention or may be known and used by those skilled in the computer software field.
  • Examples of computer programs may include machine language code such as those produced by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like.
  • One embodiment of the present invention can be used to fabricate an electronic cigarette device that includes a computing device that powers a heater with a battery.

Landscapes

  • Control Of Resistance Heating (AREA)

Abstract

Cette invention concerne un appareil de génération d'aérosol ayant une fonction de commande de rétroaction, l'appareil de génération d'aérosol selon un mode de réalisation de l'invention comprenant : un dispositif de chauffage pour chauffer un substrat de génération d'aérosol pour générer un aérosol; une unité de commande pour commander, sur la base d'un signal de commande, l'énergie fournie au dispositif de chauffage par une batterie; un commutateur pour effectuer une action de commutation en réponse au signal de commande pour fournir de l'énergie au dispositif de chauffage; et une unité de calcul de signal de comparaison pour recevoir un signal déclenché par l'action de commutation et calculer un signal de comparaison. Si la valeur de comparaison calculée en comparant le signal de comparaison et un signal de référence dépasse une plage prédéfinie, alors l'unité de commande génère un signal d'arrêt qui arrête l'action de commutation du commutateur.
PCT/KR2018/009153 2017-09-26 2018-08-10 Procédé de mise en œuvre d'une fonction de commande de rétroaction d'un appareil de génération d'aérosol, et appareil de génération d'aérosol Ceased WO2019066245A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201880047359.0A CN110892787B (zh) 2017-09-26 2018-08-10 气溶胶生成装置及实现其反馈控制功能的方法
US16/645,194 US11583007B2 (en) 2017-09-26 2018-08-10 Method for implementing feedback control function of aerosol generating apparatus, and aerosol generating apparatus
EP18863473.7A EP3691405B1 (fr) 2017-09-26 2018-08-10 Procédé de mise en oeuvre d'une fonction de commande de rétroaction d'un appareil de génération d'aérosol, et appareil de génération d'aérosol
JP2020501519A JP6930691B2 (ja) 2017-09-26 2018-08-10 エアロゾル生成装置のフィードバック制御機能を具現する方法及びそのエアロゾル生成装置

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KR20170124560 2017-09-26
KR10-2017-0124560 2017-09-26
KR1020180092052A KR102105548B1 (ko) 2017-09-26 2018-08-07 에어로졸 생성장치의 피드백 제어기능을 구현하는 방법 및 그 에어로졸 생성장치
KR10-2018-0092052 2018-08-07

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EP3691405B1 (fr) 2017-09-26 2023-04-12 KT&G Corporation Procédé de mise en oeuvre d'une fonction de commande de rétroaction d'un appareil de génération d'aérosol, et appareil de génération d'aérosol

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