US Patent 11484673 Electrically operated aerosol generation system

An aerosol generation system for generation of an aerosol from an aerosol-forming precursor includes an electrically operated heating system to heat the precursor to generate the aerosol, a flow path for transmission of flow, including the aerosol, to a user, the heating system arranged in fluid communication with the flow path, and electrical circuitry. The electrical circuitry is configured to determine a characteristic associated with a second order time derivative of a property of electrical energy through the heating system, and to determine a property related to the flow of the flow path based on the characteristic of the second order time derivative.