Gas Concentration Measurement by 2F Signal Trough Distance
AssigneeNEC Laboratories America, Inc.
InventorsDa Pan, Yue Tian, Ming-Fang Huang
Life of this patent
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Abstract
A computer-implemented method for measuring gas concentration from a 2f signal in wavelength modulation spectroscopy is presented. The computer-implemented method includes emitting a beam of light from a laser to pass through a gas sample, calculating a gas measurement value from the gas sample via a trough distance calculator using a trough distance of a gas absorption line's 2f signal, calibrating the gas measurement value via a multi-point calibration process, and outputting the gas measurement value to a user interface of a computing device.
Claims20
A computer-implemented method executed on a processor for measuring gas concentration from a 2f signal in wavelength modulation spectroscopy, the method comprising:
- emitting a beam of light from a laser to pass through a gas sample;
- calculating a gas measurement value from the gas sample via a trough distance calculator using a trough distance of a gas absorption line's 2f signal;
- calibrating the gas measurement value via a multi-point calibration process;
- and
- outputting the gas measurement value to a user interface of a computing device.
A non-transitory computer-readable storage medium comprising a computer-readable program for measuring gas concentration from a 2f signal in wavelength modulation spectroscopy, wherein the computer-readable program when executed on a computer causes the computer to perform the steps of:
- emitting a beam of light from a laser to pass through a gas sample;
- calculating a gas measurement value from the gas sample via a trough distance calculator using a trough distance of a gas absorption line's 2f signal;
- calibrating the gas measurement value via a multi-point calibration process;
- and
- outputting the gas measurement value to a user interface of a computing device.
A system for measuring gas concentration from a 2f signal in wavelength modulation spectroscopy, the system comprising:
- a laser to emit a beam of light to pass through a gas sample;
- a gas measurement value calculated from the gas sample via a trough distance calculator using a trough distance of a gas absorption line's 2f signal;
- a multi-point calibration system to calibrate the gas measurement value;
- and
- a user interface of a computing device to output the gas measurement value.
Dependencies are inferred from the claim text.