An inhalation device defines a receptacle for receiving an aerosol-forming substrate containing at least one vaporizable substance; an atomizer configured to generate an aerosol from the aerosol-forming substrate; a first sensor configured to generate a first signal or first data associated with a presence of at least one chemical substance in the generated aerosol; a second sensor configured to generate a second signal or second data associated with a further characteristic of the generated aerosol or of the aerosol-forming substrate or of the at least one vaporizable substance; and at least one controller configured to separately analyze both the first signal or first data and the second signal or second data to determine first and second analysis results, and configured to determine an operation mode of the inhalation device or to determine whether to alter an operation of the inhalation device based on both the first and second analysis results.

A method of generating aerosol from aerosol generating material using an aerosol provision device is disclosed. The method comprises supplying power to a heating element to begin heating the aerosol generating material to an operational temperature (e.g. a temperature at which aerosol is generated). After a first predetermined time period, the method provides a signal to a user to signify that the user may begin inhaling on the device. After a second predetermined time period or after a user has stopped inhaling, the method reduces the supply of power to the heating element. In this way a user can be guided as to when to inhale on a device. The timing may be adjusted to suit a particular delivery and/or device. Also described are aerosol provision devices and systems.

A method of generating aerosol from aerosol generating material using an aerosol provision device is disclosed. The method comprises supplying power to a heating element to begin heating the aerosol generating material to an operational temperature (e.g. a temperature at which aerosol is generated). After a first predetermined time period, the method provides a signal to a user to signify that the user may begin inhaling on the device. After a second predetermined time period or after a user has stopped inhaling, the method reduces the supply of power to the heating element. In this way a user can be guided as to when to inhale on a device. The timing may be adjusted to suit a particular delivery and/or device. Also described are aerosol provision devices and systems.

An aerosol generation device includes a power system having at least one supercapacitor and at least one battery. The power system is operable in a plurality of selectable operating modes. The aerosol generation device further includes a controller. The controller is configured to control a power flow of the at least one supercapacitor and a power flow of the at least one battery based on the selected operating mode. The plurality of operating modes includes a float mode in which a heater associated with the aerosol generation device is maintained substantially at an aerosol generation temperature. In the float mode the controller is configured to control a power flow of the power system to maintain the heater substantially at the aerosol generation temperature, and control the at least one battery to charge the at least one supercapacitor.

An aerosol generation device includes a power system having at least one supercapacitor and at least one battery. The power system is operable in a plurality of selectable operating modes. The aerosol generation device further includes a controller. The controller is configured to control a power flow of the at least one supercapacitor and a power flow of the at least one battery based on the selected operating mode. The plurality of operating modes includes a float mode in which a heater associated with the aerosol generation device is maintained substantially at an aerosol generation temperature. In the float mode the controller is configured to control a power flow of the power system to maintain the heater substantially at the aerosol generation temperature, and control the at least one battery to charge the at least one supercapacitor.

An aerosol provision system including a consumable having a plurality of regions of aerosol generating material, and a heater comprising a plurality of heating elements, each heating element corresponding to a region of the plurality of regions of aerosol generating material, wherein in use the heater is arranged to controllably heat at least two of the plurality of regions of aerosol generating material to produce a personalised aerosol for inhalation.

An aerosol provision system including a consumable having a plurality of regions of aerosol generating material, and a heater comprising a plurality of heating elements, each heating element corresponding to a region of the plurality of regions of aerosol generating material, wherein in use the heater is arranged to controllably heat at least two of the plurality of regions of aerosol generating material to produce a personalised aerosol for inhalation.

Provided is an aerosol generating device distributing and transmitting power from a battery to two heaters, wherein the aerosol generating device includes the battery, a first heater heating a first aerosol generating substrate, a second heater heating a second aerosol generating substrate, and a controller controlling power supplied from the battery to the first heater and the second heater, wherein the controller controls power to be supplied from the battery to the first heater and the second heater at different times.

Provided is an aerosol generating device distributing and transmitting power from a battery to two heaters, wherein the aerosol generating device includes the battery, a first heater heating a first aerosol generating substrate, a second heater heating a second aerosol generating substrate, and a controller controlling power supplied from the battery to the first heater and the second heater, wherein the controller controls power to be supplied from the battery to the first heater and the second heater at different times.

An aerosol generating device defines a flow path from an air inlet to an inhalable medium outlet. The device includes a container for containing a liquid; a wick for drawing liquid from the container into the flow path, and a heating element, upstream of the wick, for heating inlet air from the air inlet to generate a flow of heated air in the flow path in use. The device is arranged such that, in use, the flow of heated air generated in use passes over the wick to volatilize the liquid to generate, in use, a flow of aerosol in the flow path. The device includes a receiving portion in the flow path, downstream of the wick, for receiving an element for modifying a property of the flow of aerosol. A device including a shield element to shield the wick from a heating element is also disclosed.