Patent attributes
The method includes first arranging a liquid storage portion to hold a liquid aerosol-forming substrate, second arranging a wick and an aerosol generator to communicate the liquid aerosol-forming substrate from the liquid storage portion and at least partially vaporize the liquid aerosol-forming substrate, third arranging a tilt sensor to sense an angle of orientation value of the liquid storage portion, and configuring at least one processor of an electrical circuit to monitor the angle of orientation value as sensed by the tilt sensor to determine a depletion value of the liquid aerosol-forming substrate based at least in part on the angle of orientation value, while the aerosol-generating device is in any physical orientation.