METHOD FOR DETECTING SULFUR HEXAFLUORIDE

• US 20200132546A1
• Filed: 10/30/2019
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Active Application

• Current Assignee: Quantum Spatial Inc.
• Original Assignee: Quantum Spatial Inc.
• Inventors: Nowicki, Scott
• Application Number:
  US16/669,388
• Publication Number:
  US 20200132546A1
• Time in Patent Office: Days
• CPC Class Codes: C01B 17/453 Sulfur hexafluoride
• CPC Class Codes: G01J 2003/2826 Multispectral imaging, e.g. filter imaging
• CPC Class Codes: G01J 2005/0077 Imaging
• CPC Class Codes: G01J 3/2823 Imaging spectrometer
• CPC Class Codes: G01J 3/42 Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry beam switching arrangements G01J3/08
• CPC Class Codes: G01J 5/0014 for sensing the radiation from gases, flames
• CPC Class Codes: G01J 5/025 Interfacing a pyrometer to an external device or network; User interface
• CPC Class Codes: G01J 5/047 Mobile mounting; Scanning arrangements
• CPC Class Codes: G01J 5/80 Calibration using comparison with reference sources G01J5/52
• CPC Class Codes: G01N 33/0052 Gaseous halogens

Abstract

Various embodiments are directed to a method of utilizing an imaging system for detecting a greenhouse gas such as sulfur hexafluoride. The method may include (1) generating, by a first thermal camera coupled to a robotic platform, a static image of a scene utilizing a first spectral filter for passing wavelengths within an SF6 absorption range, (2) generating, by a second thermal camera coupled to the robotic platform, an additional static image of the scene utilizing a second spectral filter for passing wavelengths outside of the SF6 absorption range, and (3) detecting the presence of SF6 in the scene based, at least in part, on the static image, the additional static image, and a difference between the static image and the additional static image.

Claims

1. A method for utilizing an imaging system to detect sulfur hexafluoride (SF6), comprising:

generating, by a first thermal camera coupled to a robotic platform, a static image of a scene utilizing a first spectral filter for passing wavelengths within an SF6 absorption range;

generating, by a second thermal camera coupled to the robotic platform, an additional static image of the scene utilizing a second spectral filter for passing wavelengths outside of the SF6 absorption range; and

detecting a presence of SF6 in the scene based, at least in part, on the static image, the additional static image, and a difference between the static image and the additional static image.

2. The method of claim 1, wherein generating the static image of the scene utilizing the first spectral filter comprises utilizing an uncooled thermal detector with the first spectral filter in an optical path for passing the wavelengths within the SF6 absorption range.

3. The method of claim 1, wherein generating the additional static image of the scene utilizing another uncooled thermal detector with the second spectral filter in another optical path for passing the wavelengths outside of the SF6 absorption range, wherein the second thermal camera is aligned with the first thermal camera, and wherein the first and second thermal cameras are operative to co-collect long exposure images.

4. The method of claim 3, wherein the long exposure images comprise images captured over an extended time period.

5. The method of claim 4, wherein the extended time period comprises about 500 milliseconds.

6. The method of claim 1, wherein the first spectral filter comprises a band-pass filter that passes the wavelengths within the SF6 absorption range.

7. The method of claim 1, wherein the second spectral filter comprises a band-pass filter that passes the wavelengths outside of the SF6 absorption range.

8. The method of claim 1, wherein the difference between the static image and the additional static image provide one or more independent observations for autonomously detecting a presence of the SF6 in the scene.

9. The method of claim 8, wherein the presence of the SF6 in the scene corresponds to a detection of a leak in one or more high capacity transmission circuits utilized in an electrical power station.

10. A method for utilizing an imaging system to detect a greenhouse gas, comprising:

generating, by a first thermal camera coupled to a robotic platform, a static image of a scene utilizing a first spectral filter for passing wavelengths within an absorption range of the greenhouse gas;

generating, by a second thermal camera coupled to the robotic platform, an additional static image of the scene utilizing a second spectral filter for passing wavelengths outside of the absorption range of the greenhouse gas; and

detecting a presence of the greenhouse gas in the scene based, at least in part, on the static image, the additional static image, and a difference between the static image and the additional static image.

11. The method of claim 10, wherein generating the static image of the scene utilizing the first spectral filter comprises utilizing an uncooled thermal detector with the first spectral filter in an optical path for passing the wavelengths within the absorption range of the greenhouse gas.

12. The method of claim 10, wherein generating the additional static image of the scene utilizing another uncooled thermal detector with the second spectral filter in another optical path for passing the wavelengths outside of the absorption range of the greenhouse gas, wherein the second thermal camera is aligned with the first thermal camera, and wherein the first and second thermal cameras are operative to co-collect long exposure images.

13. The method of claim 12, wherein the long exposure images comprise images captured over an extended time period.

14. The method of claim 13, wherein the extended time period comprises about 500 milliseconds.

15. The method of claim 10, wherein the first spectral filter comprises a band-pass filter that passes the wavelengths within the absorption range of the greenhouse gas.

16. The method of claim 10, wherein the second spectral filter comprises a band-pass filter that passes the wavelengths outside of the absorption range of the greenhouse gas.

17. The method of claim 10, wherein the difference between the static image and the additional static image provide one or more independent observations for autonomously detecting a presence of the greenhouse gas in the scene.

18. The method of claim 17, wherein the presence of the greenhouse gas in the scene corresponds to a detection of a leak in one or more high capacity transmission circuits utilized in an electrical power station.

19. The method of claim 10, wherein the greenhouse gas comprises sulfur hexafluoride (SF6).

20. A method for utilizing an imaging system to detect sulfur hexafluoride (SF6), comprising:

generating, by a first thermal camera coupled to a robotic platform, a static image of a scene utilizing a first spectral filter for passing wavelengths within an SF6 absorption range, wherein generating the static image of the scene utilizing the first spectral filter comprises utilizing an uncooled thermal detector with the first spectral filter in an optical path for passing the wavelengths within the SF6 absorption range;

generating, by a second thermal camera coupled to the robotic platform, an additional static image of the scene utilizing a second spectral filter for passing wavelengths outside of the SF6 absorption range, wherein generating the additional static image of the scene utilizing another uncooled thermal detector with the second spectral filter in another optical path for passing the wavelengths outside of the SF6 absorption range, wherein the second thermal camera is aligned with the first thermal camera, and wherein the first and second thermal cameras are operative to co-collect long exposure images; and

detecting a presence of SF6 in the scene based, at least in part, on the static image, the additional static image, and a difference between the static image and the additional static image.