Patent ID: 11953497
Assignee: BOYDSENSE, INC.
Field: Measurement (Instruments)
Classification: CPC G  A | IPC A  G

Claim 4:
5. Breath sensing device for a portable telecommunication device or a wearable device, the breath sensing device comprising:
an acoustic wave sensing means comprising a microphone with a membrane,
the microphone comprising a movable plate and a fixed plate, the fixed plate being arranged over the movable plate, so that the movable plate and the fixed plate form a capacitor,
the fixed plate comprising a plurality of holes;
a gas sensing means sensitive to at least one type of molecule,
the gas sensing means comprises a gas sensitive layer that is arranged over the fixed plate of the microphone,
the gas sensitive layer comprising a plurality of holes;
wherein the plurality of holes of the fixed plate of the microphone are respectively aligned with the plurality of holes of the gas sensitive layer of the gas sensing means along a thickness direction of the breath sensing device;
and further comprising a signal analyzing means configured to determine a DC electrical signal contribution to the total electrical signal received from the acoustic wave sensing means and configured to integrate the DC electrical signal over a predetermined time frame.