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US 12,253,465 B2Granted
Methods and systems for open path gas detection
AssigneeInsight M Inc.
InventorsElena S F Berman, Scott Buchter, Harshil Kamdar, Erin Wetherley, Michael Matthews
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Abstract
A system for detecting a gas may include a first laser having a wavelength overlapping with two or more absorption features in a spectrum of the gas, a second laser having a wavelength centered away from absorbing features in the spectrum of the gas, and at least one sensor to determine a received power of the first laser and a received power of the second laser.
Claims14
A system for open path gas detection, the system comprising:
- a laser having a wavelength centered on two or more absorption features in a spectrum of a gas and a linewidth overlapping with the two or more absorption features in the spectrum of the gas and an adjacent region of lower absorption in the spectrum of the gas;
- at least one sensor to determine a received power of the laser including a first portion corresponding to overlap with the two or more absorption features and a second portion corresponding to overlap with the adjacent region of lower absorption;
- a computing device that executes instructions to detect the gas based on the received power of the laser, wherein the computing device executes instructions to quantify an amount of the gas between the laser and a target based on a difference between the first portion of the received power of the laser and the second portion of the received power of the laser;
- and
- one or more of a grating, prism, or filter configured to split the received power into the first portion of the received power of the laser and the second portion of the received power of the laser.
2 more elements
A method for open path gas detection, the method comprising:
- directing a laser at a target, the laser having a wavelength centered on two or more absorption features in a spectrum of a gas and a linewidth overlapping with the two or more absorption features in the spectrum of the gas and an adjacent region of lower absorption in the spectrum of the gas;
- determining, using at least one sensor, a received power of the laser including a first portion corresponding to overlap with the two or more absorption features and a second portion corresponding to overlap with the adjacent region of lower absorption;
- detecting, using a computing device, the gas based on the received power of the laser;
- quantifying, by the computing device, an amount of the gas between the laser and a target based on a difference between the first portion of the received power of the laser and the second portion of the received power of the laser;
- and
- splitting, using one or more of a grating, prism, or filter, the received power into the first portion of the received power of the laser and the second portion of the received power of the laser.
3 more elements
Dependencies are inferred from the claim text.