Gas detector using a Golay cell
AssigneeHoneywell International Inc.
InventorsWei Yang, Teresa M. Marta, Martin Willett, Rodney R. Watts
Life of this patent
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Abstract
Gas detector devices, systems, and methods using a Golay cell are described herein. One device includes a microphone having a front surface with a sound collecting aperture for receiving sound, a substrate, a gas cavity formed in the substrate such that the gas cavity is in gas communication with the sound collecting aperture and the front surface forms a side surface of the gas cavity, and a window abutting the substrate to form a side surface of the gas cavity.
Claims20
A gas detector device, comprising:
- a substrate;
- a plurality of Golay cells formed on the substrate, wherein each Golay cell of the plurality of Golay cells comprises:
- a microphone having a front surface with a sound collecting aperture for receiving sound;
- a gas cavity formed in the substrate such that the gas cavity is in gas communication with the sound collecting aperture and the front surface forms a side surface of the gas cavity;
- a gas in the gas cavity;
- and
- a window abutting the substrate to form a side surface of the gas cavity.
A gas detection system, comprising:
- at least one light source;
- a plurality of Golay cells, wherein each Golay cell of the plurality of Golay cells comprises:
- a microphone having front surface with a sound collecting aperture for receiving sound;
- a substrate abutting the front surface of the microphone;
- a gas cavity formed in the substrate such that the gas cavity is in gas communication with the aperture;
- and
- a window abutting the substrate forming a side surface of the gas cavity,
- wherein the light source is positioned to direct light toward the gas detector.
A method of detecting a gas, the method comprising:
- directing a light source towards a gas cavity formed in a substrate;
- passing radiation from the light source through a window abutting the substrate, wherein the window forms a side of the gas cavity;
- absorbing the radiation from the light source with a gas disposed in the gas cavity;
- generating an acoustic response to the absorbed radiation;
- detecting the acoustic response with a microphone having a front surface with a sound collecting aperture in fluid communication with the gas cavity, wherein the front surface forms a side of the gas cavity
- a window abutting the second surface of the substrate to seal the gas cavity.
Dependencies are inferred from the claim text.