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US Patent 10113956 Remote gas leakage detection systems using mid-infrared laser

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Patent abstractTimelineTable: Further ResourcesReferences
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Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
10113956
Date of Patent
October 30, 2018
Patent Application Number
15678052
Date Filed
August 15, 2017
Patent Citations Received
‌
US Patent 10816458 Gas analysis system
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US Patent 10900838 Wavemeter system using a set of optical chips
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US Patent 10816520 Gas analysis system
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US Patent 11703412 System and method for detecting sewer lateral leaks
6
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US Patent 10955294 Optical sensor for trace-gas measurement
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US Patent 10662765 Wellsite emissions monitoring and control
Patent Primary Examiner
‌
Kiho Kim
Patent abstract

A system remotely detects a gas leakage from a target in an area. The gas detection system includes two light sources: a mid-infrared (mid-IR) laser for detecting absorbance of the gas in the area, and a visible laser for detecting a pathlength of the mid-IR laser. The absorption is determined based on the relative amplitude difference of the emitted and reflected mid-IR light beams. The mid-IR laser may use wavelength modulation techniques to improve the absorption determination. The pathlength is determined by comparing a phase between the emitted visible light beam and the measured visible light beam. The gas detection system calculates a concentration of the gas in the area using the determined absorption and pathlength. The gas detection system may be attached to an unmanned aerial vehicle.

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