Hot wire anemometer air flow measurement, puff detection and ambient temperature tracking
US12329208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2024 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Jan 22, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F15/063
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of controlling a hot wire anemometer (HWA) of a non-nicotine e-vaping device includes controlling, by a first PID controller, a level of power applied by the non-nicotine e-vaping device to the HWA based on a temperature of a heated element of the HWA and a temperature setpoint; generating a puff detection signal indicating whether or not a puff is currently occurring with respect to the non-nicotine e-vaping device; and while the puff detection signal indicates that a puff is not currently occurring with respect to the non-nicotine e-vaping device, detecting, by a second PID controller, a change in an ambient temperature of the HWA, and controlling, by the second PID controller, the temperature setpoint such that the temperature setpoint changes in response to the detected change in the ambient temperature of the HWA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.