Method and device for remote sensing of amount of ingredients and temperature of gases
First Claim
1. A method for detecting characteristics of a gas, comprising:
- (a) sweepingly directing a beam of light through the gas to a target surface on which the beam of light is scattered;
(b) acquiring the scattered light scattered from the target surface; and
(c) processing the acquired scattered light to determine the characteristics of the gas, wherein the characteristics of the gas comprise at least one of a temperature of the gas and an amount of at least one ingredient of the gas,wherein the gas comprises one of an exhausted plume from a vehicle or factory plant, leaked gas from an oil well or gas resource, and unidentified gas from an unknown source; and
wherein the target surface is one of a road surface of a road having at least one lane, a drill surface of oil well or gas resource and a surface having the unidentified gas; and
wherein the acquiring step comprises;
acquiring an image from the scattered light; and
wherein the processing step comprises;
obtaining a plurality of pixels from the acquired image, each pixel representing a pixel area of the road, wherein each of the at least one lane of the road correspond to a group of the pixels;
characterizing an absorption rate of light of each pixel from the acquired image;
calculating optical mass of each pixel from the characterized absorption rate of the pixel; and
for each of the at least one lane, identifying whether the gas exists on the lane based on the optical mass of the corresponding group of the pixels.
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Accused Products
Abstract
Aspects of the invention are directed to a device and method for detecting characteristics of a gas. The gas includes an exhausted plume from a vehicle or factory plant, leaked gas from an oil well or gas resource, or unidentified gas from an unknown source. The method includes sweepingly directing a beam of light through the gas to a target surface on which the beam of light is scattered, acquiring the scattered light scattered from the target surface, and processing the acquired scattered light to determine the characteristics of the gas, where the characteristics of the gas comprise at least one of a temperature of the gas and an amount of at least one ingredient of the gas.
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Citations
12 Claims
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1. A method for detecting characteristics of a gas, comprising:
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(a) sweepingly directing a beam of light through the gas to a target surface on which the beam of light is scattered; (b) acquiring the scattered light scattered from the target surface; and (c) processing the acquired scattered light to determine the characteristics of the gas, wherein the characteristics of the gas comprise at least one of a temperature of the gas and an amount of at least one ingredient of the gas, wherein the gas comprises one of an exhausted plume from a vehicle or factory plant, leaked gas from an oil well or gas resource, and unidentified gas from an unknown source; and wherein the target surface is one of a road surface of a road having at least one lane, a drill surface of oil well or gas resource and a surface having the unidentified gas; and wherein the acquiring step comprises; acquiring an image from the scattered light; and wherein the processing step comprises; obtaining a plurality of pixels from the acquired image, each pixel representing a pixel area of the road, wherein each of the at least one lane of the road correspond to a group of the pixels; characterizing an absorption rate of light of each pixel from the acquired image; calculating optical mass of each pixel from the characterized absorption rate of the pixel; and for each of the at least one lane, identifying whether the gas exists on the lane based on the optical mass of the corresponding group of the pixels.
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2. A method for detecting characteristics of a gas, comprising:
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(a) sweepingly directing a beam of light through the gas to a target surface on which the beam of light is scattered; (b) acquiring the scattered light scattered from the target surface; and (c) processing the acquired scattered light to determine the characteristics of the gas, wherein the characteristics of the gas comprise at least one of a temperature of the gas and an amount of at least one ingredient of the gas, wherein the gas comprises one of an exhausted plume from a vehicle or factory plant, leaked gas from an oil well or gas resource, and unidentified gas from an unknown source; and wherein the target surface is one of a road surface of a road having at least one lane, a drill surface of oil well or gas resource and a surface having the unidentified gas; and wherein the processing step comprises; (a) characterizing an absorption line from the acquired scattered light; (b) obtaining a half-width at half-maximum (HWHM) of the absorption line; and (c) determining the temperature of the gas from the obtained HWHM with a relationship of; - View Dependent Claims (3)
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4. A method for detecting characteristics of a gas, comprising:
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(a) sweepingly directing a beam of light through the gas to a target surface on which the beam of light is scattered; (b) acquiring the scattered light scattered from the target surface; and (c) processing the acquired scattered light to determine the characteristics of the gas, wherein the characteristics of the gas comprise at least one of a temperature of the gas and an amount of at least one ingredient of the gas, wherein the gas comprises one of an exhausted plume from a vehicle or factory plant, leaked gas from an oil well or gas resource, and unidentified gas from an unknown source; and wherein the target surface is one of a road surface of a road having at least one lane, a drill surface of oil well or gas resource and a surface having the unidentified gas; and wherein the directing step comprises; spin-sweepingly directing the beam of light along an optical path to the target surface such that the optical path spin-forms a cone geometry covering the target surface. - View Dependent Claims (5)
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6. A device for detecting characteristics of a gas, comprising:
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(a) a light source configured to emit a beam of light through the gas to a target surface on which the beam of light is scattered; (b) a detector configured to acquire the scattered light scattered from the surface; and (c) a processor configured to process the acquired scattered light to determine the characteristics of the gas, wherein the characteristics of the gas comprise at least one of a temperature of the gas and an amount of at least one ingredient of the gas, (d) a positioning optics configured to sweepingly direct the beam of light emitted by the light source through the gas to the target surface, wherein the gas comprises one of an exhausted plume from a vehicle or factory plant, leaked gas from an oil well or gas resource, and unidentified gas from an unknown source; and wherein the target surface is one of a road surface of a road having at least one lane, a drill surface of oil well or gas resource and a surface having the unidentified gas. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification