Profile selection based on puff behaviour

Abstract

An aerosol-generating device is provided for generating an aerosol from an aerosol-generating article including an aerosol-forming substrate, the device being configured to generate the aerosol during a usage session including a usage session start, end, and first and second periods between the start and the end, the device including: a heater assembly to heat the substrate; a power supply to supply power to the assembly; and control circuitry including a memory in which predetermined different heating profiles are stored, the circuitry to determine a user puff behaviour during the first period, to use the determined behaviour to select one of the predetermined profiles, and to control the power during the second period according to the selected profile, the usage session end corresponding to an end of the selected profile, the first period start corresponding to the usage session start and the second period end corresponding to the usage session end.

1 .- 14 . (canceled) 
     
     
         15 . An aerosol-generating device for generating an aerosol from an aerosol-generating article comprising an aerosol-forming substrate, the aerosol-generating device being configured to generate the aerosol during a usage session comprising a usage session start, a usage session end, and at least a first period and a second period between the usage session start and the usage session end, the aerosol-generating device comprising:
 a heater assembly configured to heat the aerosol-forming substrate;   a power supply configured to supply power to the heater assembly; and   control circuitry comprising a memory in which a plurality of predetermined heating profiles are stored that are different from one another,   wherein the control circuitry is configured to determine a user puff behaviour during the first period of the usage session, to use the determined user puff behaviour to select one of the plurality of predetermined heating profiles, and to control the supply of power to the heater assembly during the second period according to the selected predetermined heating profile,   wherein the usage session end corresponds to an end of the selected predetermined heating profile,   wherein the first period start corresponds to the usage session start and the second period end corresponds to the usage session end,   wherein the second period of the usage session comprises a plurality of user puffs,   wherein the plurality of predetermined heating profiles comprises a first predetermined heating profile and a second predetermined heating profile, and   wherein the first predetermined heating profile has a longer duration than the second predetermined heating profile.   
     
     
         16 . The aerosol-generating device according to  claim 15 , wherein the determined user puff behaviour during the first period relates to at least one of a puff frequency, a puff interval, a puff strength, a puff length, a number of puffs taken, a quantity of aerosol generated per puff, or a quantity of aerosol generated during the first period. 
     
     
         17 . The aerosol-generating device according to  claim 15 , wherein the first period comprises a first period start and a first period end. 
     
     
         18 . The aerosol-generating device according to  claim 17 , wherein the first period end is at least 20 seconds after the first period start. 
     
     
         19 . The aerosol-generating device according to  claim 15 , further comprising a detector configured to detect a parameter indicative of a user puff. 
     
     
         20 . The aerosol-generating device according to  claim 15 , wherein the plurality of predetermined heating profiles comprises a first predetermined heating profile and a second predetermined heating profile. 
     
     
         21 . The aerosol-generating device according to  claim 20 , wherein the control circuitry is further configured to select the first predetermined profile or the second predetermined profile based on a comparison of the detected user puff behaviour with a predetermined threshold stored in a memory of the control circuitry. 
     
     
         22 . The aerosol-generating device according to  claim 21 , wherein the predetermined threshold for the user puff behaviour stored in the memory is a threshold for a puff interval, a mean average puff interval, a puff frequency, or a mean average puff frequency. 
     
     
         23 . The aerosol-generating device according to  claim 22 , wherein the predetermined threshold corresponds to a puff interval of between 20 seconds and 34 seconds. 
     
     
         24 . The aerosol-generating device according to  claim 20 , wherein the first predetermined heating profile has a duration that is at least 30% longer than the second heating profile. 
     
     
         25 . The aerosol-generating device according to  claim 15 , wherein the aerosol-generating device is further configured to generate aerosol from the aerosol-forming substrate in the aerosol-generating article. 
     
     
         26 . The aerosol-generating device according to  claim 25 , wherein the aerosol-generating article comprises a wrapper circumscribing the aerosol-forming substrate. 
     
     
         27 . The aerosol-generating device according to  claim 25 , wherein the aerosol-forming substrate is a solid aerosol-forming substrate. 
     
     
         28 . A method of controlling power supplied to a heater assembly of an aerosol-generating device for generating an aerosol from an aerosol-forming substrate during a usage session comprising a usage session start, a usage session end, and at least a first period and a second period between the usage session start and the usage session end, the method comprising:
 determining a user puff behaviour during the first period of the usage session;   using the determined user puff behaviour to select one of a plurality of predetermined heating profiles that are different to one another; and   controlling the supply of power to the heater assembly according to the selected predetermined heating profile during the second period,   wherein the usage session end corresponds to an end of the selected predetermined heating profile,   wherein the first period start corresponds to the usage session start and the second period end corresponds to the usage session end,   wherein the second period of the usage session comprises a plurality of user puffs,   wherein the plurality of predetermined heating profiles comprises a first predetermined heating profile and a second predetermined heating profile, and   wherein the first predetermined heating profile has a longer duration than the second predetermined heating profile.