Aerosol generating device and method and program for operating this
In order to provide an aerosol generating device which can determine, at an earlier stage, the occurrence of depletion or shortage pf the aerosol source, this aerosol generating device ( 100 ) includes: a storage unit ( 116 A) which stores an aerosol source or an aerosol substrate ( 116 B) which holds an aerosol source; a load ( 132 ) which atomizes the aerosol source by generating heat with power supplied from a power supply ( 110 ); a sensor ( 112 ) which outputs values related with the temperature of the load ( 132 ); and a control unit ( 106 ). The control unit ( 06 ), in response to an aerosol generation request, supplies power from the power supply ( 110 ) to the load ( 132 ) to carry out a power supply cycle, and, on the basis of an index based on the deviation of the output values of the sensor ( 112 ) in a single power supply cycle, determines the occurrence of depletion or shortage of the aerosol source in the storage unit ( 116 A) or the aerosol substrate ( 116 B).
1. An aerosol generating device comprising:
a storage configured to store an aerosol source or an aerosol base material for holding the aerosol source;
a load configured to atomize the aerosol source by heat generated by receiving supply of electric power from an electric power source;
a sensor configured to output a value relating to temperature of the load; and
circuitry configured to
perform, in response to a request for generation of aerosol, electric power supplying cycles by supplying electric power from the electric power source to the load; and
determine, based on an index that is a standard deviation or variance of output values of the sensor obtained at different times in a single one of the electric power supplying cycles, occurrence of depletion or shortage of the aerosol source in the storage or the aerosol base material.
2. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
determine occurrence of the depletion or the shortage, based on comparison between the index and an index that is a standard deviation or variance of output values of the sensor obtained in a single one of the electric power supplying cycles when the depletion or the shortage has not been occurred.
3. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
eliminate or reduce effect of output values of the sensor on deriving the index, wherein the output values of the sensor are obtained at or during at least one of:
a time of a start of a single one of the electric power supplying cycles,
a time of an end of a single one of the electric power supplying cycles,
one or more points in time in a single one of the electric power supplying cycles, and
a period of time in a single one of the electric power supplying cycles.
4. The aerosol generating device of claim 1 , wherein the circuitry is configured not to:
obtain temperature of the load at or during at least one of:
a time of a start of a single one of the electric power supplying cycles,
a time of an end of a single one of the electric power supplying cycles,
one or more points in time in a single one of the electric power supplying cycles, and
a period of time in a single one of the electric power supplying cycles.
5. The aerosol generating device of claim 1 , wherein the output values used to derive the index do not include at least a part of output values of the sensor obtained in a warming period and/or a cooling period in a single one of the electric power supplying cycles.
6. The aerosol generating device of claim 1 , wherein the circuitry is configured not to:
obtain temperature of the load in a warming period and/or a cooling period in a single one of the electric power supplying cycles.
7. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
divide a single one of the electric power supplying cycles into a plurality of phases that include a first phase and a second phase appearing after the first phase in a time series; and
determine occurrence of the depletion or the shortage based on the index derived only from output values of the sensor obtained in the second phase.
8. The aerosol generating device of claim 7 , wherein the first phase is shorter than the second phase.
9. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
divide a single one of the electric power supplying cycles into a plurality of phases that include a first phase and a second phase appearing after the first phase in a time series;
derive a first index that is a standard deviation or variance of output values of the sensor obtained in the first phase and a second index that is a standard deviation or variance of output values of the sensor obtained in the second phase; and
determine occurrence of the depletion or the shortage based on a difference between the second index and the first index.
10. The aerosol generating device of claim 1 , wherein the circuitry is configured to:
determine occurrence of the depletion or the shortage based on the index that is derived from at least part of output values of the sensor that are obtained after the output values of the sensor have reached a steady state in a single one of the electric power supplying cycles.
11. The aerosol generating device of claim 10 , wherein the circuitry is configured to:
divide a single one of the electric power supplying cycles into a plurality of phases that include a first phase and a second phase appearing after the first phase in a time series; and
determine whether the output values of the sensor have reached a steady state by:
determining whether the index that is a standard deviation or variance of the output values of the sensor obtained in the first phase is less than a threshold,
determining whether the output values of the sensor obtained are in a predetermined range during a predetermined period of time in the single one of the electric power supplying cycles, and/or
determining whether a difference between an average value of the output values of the sensor obtained during a predetermined period of time in the single one of the electric power supplying cycles and a predetermined value is included in a predetermined range of values.
12. The aerosol generating device of claim 1 , wherein the circuitry is configured to determine occurrence of the depletion or the shortage based on:
the index; and
output values of the sensor or an average value of the output values of the sensor obtained in a single one of the electric power supplying cycles.
13. The aerosol generating device of claim 12 , wherein the circuitry is configured to:
detect occurrence of the depletion or the shortage only when output values of the sensor or an average value of the output values of the sensor obtained in a single one of the electric power supplying cycles are/is higher than temperature at which aerosol is generated from the aerosol source.
14. A method for operating an aerosol generating device including a storage configured to store an aerosol source or an aerosol base material for holding the aerosol source; a load configured to atomize the aerosol source by heat generated by receiving supply of electric power from an electric power source; a sensor configured to output a value relating to temperature of the load; and circuitry, the method comprising:
performing, by the circuitry in response to a request for generation of aerosol, electric power supplying cycles by supplying electric power from the electric power source to the load; and
determining, by the circuitry based on an index that is a standard deviation or variance of output values of the sensor obtained at different times in a single one of the electric power supplying cycles, occurrence of depletion or shortage of the aerosol source in the storage or the aerosol base material.
15. A non-transitory computer readable storage medium storing a program causing the circuitry to perform the method of claim 14 , when the program is executed by the circuitry.
16. An aerosol generating device comprising:
a storage configured to store an aerosol source or an aerosol base material for holding the aerosol source;
a load configured to atomize the aerosol source by heat generated by receiving supply of electric power from an electric power source;
a sensor configured to output a value relating to temperature of the load; and
circuitry configured to
perform, in response to a request for generation of aerosol, electric power supplying cycles by supplying electric power from the electric power source to the load; and
determine, based on behavior of output values of the sensor obtained at different times after the output values of the sensor have reached a steady state in a single one of the electric power supplying cycles, occurrence of depletion or shortage of the aerosol source in the storage or the aerosol base material.
17. A method for operating an aerosol generating device including a storage configured to store an aerosol source or an aerosol base material for holding the aerosol source; a load configured to atomize the aerosol source by heat generated by receiving supply of electric power from an electric power source; a sensor configured to output a value relating to temperature of the load; and circuitry, the method comprising:
performing, by the circuitry in response to a request for generation of aerosol, electric power supplying cycles by supplying electric power from the electric power source to the load; and
determining, by the circuitry based on behavior of output values of the sensor obtained at different times after the output values of the sensor have reached a steady state in a single one of the electric power supplying cycles, occurrence of depletion or shortage of the aerosol source in the storage or the aerosol base material.
18. A non-transitory computer readable storage medium storing a program causing the circuitry to perform the method of claim 17 , when the program is executed by the circuitry.