Interactive aerosol provision system

Abstract

An aerosol delivery system comprises an aerosol delivery device, a puff characterisation processor configured to estimate an average of a puff characteristic by a user of the aerosol delivery device for a plurality of puffs, a control processor configured to alter a composition of an aerosol delivered to the user by the delivery device, the puff characterisation processor being configured to detect any change in an estimated average puff characteristic after the composition of the aerosol has been altered, and the control processor being configured to, if such a change exceeds a predetermined first threshold, at least partially reverse the alteration to the composition of the aerosol.

1 . An aerosol delivery system, comprising:
 an aerosol delivery device;   a puff characterisation processor configured to estimate an average of a puff characteristic by a user of the aerosol delivery device for a plurality of puffs;   a control processor configured to alter a composition of an aerosol delivered to the user by the delivery device;   the puff characterisation processor being configured to detect any change in an estimated average puff characteristic after the composition of the aerosol has been altered, and   the control processor being configured to, if such a change exceeds a predetermined first threshold, at least partially reverse the alteration to the composition of the aerosol.   
     
     
         2 . The aerosol delivery system of  claim 1 , comprising:
 a companion device.   
     
     
         3 . The aerosol delivery system of  claim 2 , in which:
 the companion device comprises one or more selected from the list consisting of:   i. the puff characterisation processor; and   ii. the control processor.   
     
     
         4 . The aerosol delivery system of  claim 1 , in which:
 the alteration to the composition of the delivered aerosol does not substantially affect the overall aerosol mass delivery rate.   
     
     
         5 . The aerosol delivery system of  claim 1 , in which:
 the first threshold is a function of a variance in puff characteristic associated with the average puff characteristic.   
     
     
         6 . The aerosol delivery system of  claim 1 , in which:
 at least partial reversal includes reversing the alteration to the composition of the aerosol by one selected from the list consisting of:   i. 25%;   ii. 50%;   iii. 75%; and   iv. 100%.   
     
     
         7 . The aerosol delivery system of  claim 1 , in which:
 the aerosol delivery system is configured to evaluate a change in average puff characteristic corresponding to the at least partial reversal of the alteration to the composition of the aerosol.   
     
     
         8 . The aerosol delivery system of  claim 7 , in which:
 the aerosol delivery system is configured to alter a degree of partial reversal if the changed average puff characteristic is not within a predetermined second threshold of the original average puff characteristic.   
     
     
         9 . The aerosol delivery system of  claim 1 , in which:
 the aerosol delivery system is configured to model a relationship between the alteration to the composition of the aerosol and average puff characteristic.   
     
     
         10 . The aerosol delivery system of  claim 9 , in which:
 the aerosol delivery system is configured to predict an alteration that will keep the average puff characteristic within the first threshold based on the modelled relationship.   
     
     
         11 . The aerosol delivery system of  claim 9 , in which:
 The aerosol delivery system is configured to receive a modelled relationship based on relevant user data from a remote repository.   
     
     
         12 . The aerosol delivery system of  claim 9 , in which:
 The aerosol delivery system is configured to share a modelled relationship with a remote repository.   
     
     
         13 . The aerosol delivery system of  claim 1 , in which:
 alterations in composition include changes to concentration of one or more selected from the list consisting of:   i. one or more active ingredients;   ii. one or more flavourings; and   iii. one or more cloud/opacity agents.   
     
     
         14 . The aerosol delivery system of  claim 1 , in which:
 alterations in composition include a change to mix of active ingredients.   
     
     
         15 . The aerosol delivery system of  claim 1 , in which:
 the puff characteristic is one or more selected from the list consisting of:   i. puff duration; and   ii. puff intensity.   
     
     
         16 . A method of control for an aerosol delivery system comprising an aerosol delivery device, the method comprising
 a puff characterisation step of estimating an average of a puff characteristic by a user of the aerosol delivery device for a plurality of puffs;   a control step comprising altering a composition of an aerosol delivered to the user by the delivery device;   a detection step of detecting any change in an estimated average puff characteristic after the composition of the aerosol has been altered, and   a reversal step of, if such a change exceeds a predetermined first threshold, at least partially reversing the alteration to the composition of the aerosol.   
     
     
         17 . A computer program comprising computer executable instructions adapted to cause a computer system to perform the method of  claim 16 .