Mobile gas and chemical imaging camera

• US 10,084,975 B2
• Filed: 06/15/2017
• Issued: 09/25/2018
• Est. Priority Date: 05/01/2014
• Status: Active Grant

• Current Assignee: Rebellion Photonics, Inc. (Honeywell International Inc.)
• Original Assignee: Rebellion Photonics, Inc. (Honeywell International Inc.)
• Inventors: Kester, Robert Timothy, Hagen, Nathan Adrian
• Primary Examiner(s): Porta, David
• Assistant Examiner(s): Sahu, Meenakshi
• Application Number:
  US15/623,942
• Publication Number:
  US 20180077363A1
• Time in Patent Office: 467 Days
• Field of Search: 25033902
• CPC Class Codes: G01J 2003/2826 Multispectral imaging, e.g. filter imaging
• CPC Class Codes: G01J 2005/0077 Imaging
• CPC Class Codes: G01J 3/0232 using shutters
• CPC Class Codes: G01J 3/0256 Compact construction
• CPC Class Codes: G01J 3/2803 using photoelectric array detector
• CPC Class Codes: G01J 3/36 Investigating two or more bands of a spectrum by separate detectors
• CPC Class Codes: G01J 5/0014 for sensing the radiation from gases, flames
• CPC Class Codes: G01J 5/0804 Shutters
• CPC Class Codes: G01N 2021/3531 without instrumental source, i.e. radiometric
• CPC Class Codes: G01N 21/3504 for analysing gases, e.g. multi-gas analysis
• CPC Class Codes: G01N 2201/0221 Portable; cableless; compact; hand-held
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/208 for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
• CPC Class Codes: G06V 10/143 Sensing or illuminating at different wavelengths
• CPC Class Codes: G06V 10/147 Details of sensors, e.g. sensor lenses fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19
• CPC Class Codes: G06V 10/17 using hand-held instruments
• CPC Class Codes: G06V 20/10 Terrestrial scenes scenes under surveillance with static cameras G06V20/52; scenes perceived from the exterior of a vehicle G06V20/56; scenes perceived from the interior of a vehicle G06V20/59
• CPC Class Codes: H04N 23/45 for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
• CPC Class Codes: H04N 5/33 Transforming infrared radiation cameras or camera modules for generating image signals from infrared radiation H04N23/20; circuitry of SSIS for transforming infrared radiation into image signals H04N25/20

Abstract

In one embodiment, an infrared (IR) imaging system for determining a concentration of a target species in an object is disclosed. The imaging system can include an optical system including an optical focal plane array (FPA) unit. The optical system can have components defining at least two optical channels thereof, said at least two optical channels being spatially and spectrally different from one another. Each of the at least two optical channels can be positioned to transfer IR radiation incident on the optical system towards the optical FPA. The system can include a processing unit containing a processor that can be configured to acquire multispectral optical data representing said target species from the IR radiation received at the optical FPA. Said optical system and said processing unit can be contained together in a data acquisition and processing module configured to be worn or carried by a person.

Claims

1. A method for monitoring the presence of one or more target gases, the method comprising:

receiving image data from a plurality of IR imaging systems, each IR imaging system configured to capture infrared images of the one or more target gases in real-time and to associate each captured infrared image with a location at which the one or more target gases are present; and

processing the received image data to identify the location at which the one or more target gases is detected.

2. The method of claim 1, further comprising mapping, within the one or more installation sites, the location at which the one or more target gases is detected.

3. The method of claim 1, further comprising mapping, within the one or more installation sites, the location at which the or more target gases is detected, a type of target gas detected and a concentration of the type of target gas detected.

4. The method of claim 1, further comprising detecting the presence of the one or more target gases based on the image data received from the plurality of IR imaging systems.

5. The method of claim 1, further comprising receiving pre-processed image data from the plurality of IR imaging systems, the pre-processed image data comprising data associated with the presence of the one or more target gases.

6. The method of claim 1, wherein the plurality of IR imaging systems are worn or carried by a plurality of persons.

7. The method of claim 1, further comprising receiving IR image data from a plurality of truck-based IR imaging systems, each truck-based IR imaging system configured to be mounted to a truck and configured to capture infrared images of the one or more target gases in real-time.

8. The method of claim 1, further comprising receiving IR image data from a plurality of aerial-based IR imaging systems, each aerial-based IR imaging system configured to be mounted to an aerial platform and configured to capture infrared images of the one or more target gases in real-time.

9. The method of claim 1, further comprises receiving IR image data from a plurality of imaging systems mounted to stationary structures at the one or more installation sites.

10. The method of claim 1, wherein each IR imaging system of the plurality of IR imaging systems comprises a plurality of spectrally and spatially distinct optical channels, wherein receiving the image data comprises receiving multi-spectral image data from the plurality of spectrally and spatially distinct optical channels of each IR imaging system of the plurality of IR imaging systems.

11. The method of claim 10, wherein processing the received image data comprises processing the multi-spectral image data to identify the location at which the one or more target gases is detected.

12. A non-transitory computer-readable medium having a program stored thereon, the program comprising instructions for implementing the method according to claim 1, when these instructions are executed by a process.

13. A server for monitoring the presence of one or more target gases at one or more installation sites, the system comprising:

a communications module configured to receive image data from a plurality of IR imaging systems, each IR imaging system configured to capture infrared images of the one or more target gases in real-time and to associate each captured infrared image with a location at which the one or more target gases are present; and

processing circuitry including a processor configured to process the received image data to identify the location at which one or more target gases is detected.

14. The server of claim 13, wherein the processor is further configured to map the location, within the one or more installation sites, at which the one or more target gases is detected.

15. The server of claim 13, wherein the processor is further configured to identify a type of target gas detected based on the received image data.

16. The server of claim 13, wherein the communications module is further configured to receive data identifying a type of target gas detected by one or more of the IR imaging systems.

17. The server of claim 13, wherein the processor is further configured to identify a concentration of target gas based on the received image data.

18. The server of claim 13, wherein the communications module is further configured to receive data identifying a concentration of target gas detected by one or more of the IR imaging systems.

19. The server of claim 13, wherein each IR imaging system of the plurality of IR imaging systems comprises a plurality of spectrally and spatially distinct optical channels, and wherein the communications module is configured to receive multi-spectral image data from the plurality of spectrally and spatially distinct optical channels of each IR imaging system of the plurality of IR imaging systems.

20. The server of claim 19, wherein the processor is configured to process the multi-spectral image data to identify the location at which one or more target gases is detected.