AILF U10 - Functional Description; Measuring Principle

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1.2 Functional Description
UAV Based Laser Methane Leakage Detector (U10) is a gas detection device
for remotely measuring methane gas using a drone as a carrier. The device
emits a laser, an invisible infrared laser that measures the concentration per
unit (ppm.m) of methane gas present at a long distance.
1.3 Measuring Principle
“Methane molecules absorb light of a specific wavelength”
—— Molecular Absorption Spectroscopy
“The amount of light absorbed by a transparent medium (methane gas mass)
is proportional to the thickness of the air mass and the concentration of the
air mass”
—— Bill Lambert's law
According to the principle, a beam of a specific wavelength can be used to
penetrate the leaked methane air mass. According to the degree of weaken-
ing of the beam, the concentration of methane passing through the air mass
can be measured, and only the methane is responsive (the only choice).
Reecon Laser beam
Laser
Lens
Detector
Reected beam Methane