Breath sensing device for a portable electronic device
AssigneeBoydSense, Inc.
InventorKurt Neubeck
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Abstract
The invention relates to a breath sensing devices for a portable apparatus, in particular a portable telecommunication device or a wearable device, the sensing device comprising an acoustic wave sensing means, like a microphone; and a gas sensing means, The invention furthermore relates to an electronic device comprising such a sensing device. In addition, methods are provided that allow calibrating a gas volume based on an output signal of an acoustic wave sensing means.
Claims9
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, and
- a first gas sensing means sensitive to at least one type of molecule and
- a second gas sensing means sensitive to at least one other type of molecule,
- wherein the acoustic wave sensing means is provided over a substrate and the first and second gas sensing means are stacked over the acoustic wave sensing means,
- wherein one of the first and second gas sensing means is arranged over the remaining first and second gas sensing means, and
- wherein perforations in the acoustic wave sensing means are respectively aligned with perforations in the first gas sensing means and perforations in the second gas sensing means along a thickness direction of the breath sensing device.
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.
Dependencies are inferred from the claim text.