Optical path structure for open path emissions sensing
First Claim
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1. A gas component analysis system, comprising:
- a first light source capable of emitting at least one beam of light having known emission intensities corresponding to a plurality of infrared, visible, and ultraviolet spectra;
a reflection unit;
a detection unit capable of receiving the beam and measuring received intensities corresponding to the plurality of light spectra; and
a processor capable of comparing the emission intensities and the received intensities and identifying a concentration of a component corresponding to the intensities.
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Abstract
A gas component analysis system transmits, reflects, and detects light using infrared light source; a reflector unit; and a light detector. The light is transmitted through a gas, such as air containing vehicle emissions, reflected, and detected for analysis and measurement of the amount of absorption that has occurred at known wavelengths. The amount of absorption may be used to determine concentrations of reference gases corresponding to specific wavelengths.
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Citations
21 Claims
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1. A gas component analysis system, comprising:
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a first light source capable of emitting at least one beam of light having known emission intensities corresponding to a plurality of infrared, visible, and ultraviolet spectra;
a reflection unit;
a detection unit capable of receiving the beam and measuring received intensities corresponding to the plurality of light spectra; and
a processor capable of comparing the emission intensities and the received intensities and identifying a concentration of a component corresponding to the intensities. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of measuring concentrations of one or more components of a gas, comprising the steps of:
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emitting at least one beam of light having known emission intensities corresponding to a plurality of infrared, visible, and ultraviolet spectra through the gas;
reflecting the beam, using a reflection unit;
receiving the beam, using a detection unit;
measuring received intensities in the beam corresponding to the plurality of light spectra; and
identifying a concentration of at least one component of the gas corresponding to a ratio of the emission intensities and the received intensities. - View Dependent Claims (15, 16, 17)
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18. A gas component analysis system, comprising:
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a means for emitting a first beam of infrared light having known emission intensities corresponding to a plurality of infrared spectra;
a means for reflecting the first beam;
a means for receiving the first beam;
a means for measuring received intensities corresponding to the plurality of infrared spectra; and
a means for identifying a concentration of a component corresponding to the received intensities. - View Dependent Claims (19, 20, 21)
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Specification