Identifying targeted gaseous chemical compound
AssigneeItron, Inc.
InventorMark A. Stambaugh
Life of this patent
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Abstract
Systems and methods for verifying that light absorption is caused by a targeted gaseous chemical compound. A first transmittance of light, either generated at, or filtered to, a first wavelength range and a second transmittance of light, either generated at, or filtered to, a second wavelength range are measured by first and second photon detectors. A ratio of the first and second measured transmittance is determined and that ratio is compared to a transmittance ratio associated with a targeted gaseous chemical compound to verify that the light absorption is caused by the targeted gaseous chemical compound.
Claims20
A system, comprising:
- a light source that produces light about a first wavelength corresponding to a first dominant absorption band of a targeted gaseous chemical compound and at about a second wavelength corresponding to a second dominant absorption band of the targeted gaseous chemical compound;
- a light detector configured to receive the light;
- one or more processors;
- and
- non-transitory computer-readable media storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
- determining a first transmittance corresponding to the first dominant absorption band;
- determining a second transmittance corresponding to the second dominant absorption band;
- determining a ratio of the first transmittance to the second transmittance;
- comparing the ratio to a predetermined ratio corresponding to the targeted gaseous chemical compound;
- and
- verifying that light absorption is caused by the targeted gaseous chemical compound based at least in part on the ratio substantially matching the predetermined ratio.
A system, comprising:
- a light source that produces light;
- a light detector;
- one or more processors;
- and
- non-transitory computer-readable media storing instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
- sending, to a remote system, first data indicating a first transmittance of the light at a first wavelength range;
- sending, to the remote system, second data indicating a second transmittance of the light at a second wavelength range;
- and
- receiving, from the remote system, an indication that a targeted gaseous chemical compound caused absorbance of the light, the indication based at least in part on a ratio of the first transmittance to the second transmittance.
A method comprising:
- receiving, from a light detector, first data indicating a first transmittance of first light at a first wavelength range through a gas;
- receiving, from the light detector, second data indicating a second transmittance of second light at a second wavelength range through the gas;
- determining a ratio of the first transmittance to the second transmittance;
- comparing the ratio to a reference ratio associated with a targeted gaseous chemical compound;
- and
- verifying that light absorption is caused by the targeted gaseous chemical compound based at least in part on the comparing.
Dependencies are inferred from the claim text.