Patent ID: 11910838
Assignee: ALTRIA CLIENT SERVICES LLC
Field: Other consumer goods (Other fields)
Classification: CPC A  G | IPC A  G

Claim 10:
11. A nicotine e-vaping device, comprising:
a nicotine pre-vapor formulation storage portion for storing a nicotine pre-vapor formulation;
a heater configured to generate a nicotine vapor by heating the nicotine pre-vapor formulation;
a hot wire anemometer (HWA);
a first proportional-integral-derivative (PID) controller configured to control a level of power applied by the nicotine e-vaping device to the HWA based on a temperature of a heated element of the HWA and a temperature setpoint;
a puff detection signal generator configured to generate a puff detection signal indicating whether or not a puff is currently occurring with respect to the nicotine e-vaping device, the puff detection signal having a first logical value when the puff is occurring and a second logical value when the puff is not occurring, and the temperature setpoint being fixed while the puff detection signal has the first logical value indicating that the puff is currently occurring with respect to the nicotine e-vaping device; and
a second PID controller configured such that, while the puff detection signal has the second logical value indicating that the puff is not currently occurring with respect to the nicotine e-vaping device,
the second PID controller detects a change in an ambient temperature of the HWA, and
the second PID controller controls the temperature setpoint such that the temperature setpoint is adjusted in response to the detected change in the ambient temperature of the HWA.