UAV comprising a sensing system for detection and identification of biological particles

• US 7,073,748 B2
• Filed: 07/15/2004
• Issued: 07/11/2006
• Est. Priority Date: 07/15/2004
• Status: Expired due to Term

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Maurer, Scott M., Brewer, Ryan C., Kofler, Kevin J., Jackson, Larry D.
• Primary Examiner(s): BAREFOOT, GALEN L
• Application Number:
  US10/891,812
• Publication Number:
  US 20060011776A1
• Time in Patent Office: 726 Days
• Field of Search: 244/1.R, 244/129.1, 209/143, 95/31, 554/62, 436/100, 436/501, 436/172, 436/526, 436/518, 701/3, 422/50, 422/67, 422/68.1, 422/55
• US Class Current: 244/1.00R
• CPC Class Codes: B64U 10/25 Fixed-wing aircraft VTOL aircraft B64U10/20
• CPC Class Codes: B64U 10/80 UAVs characterised by their small size, e.g. micro air vehicles [MAV]
• CPC Class Codes: B64U 2101/30 for imaging, photography or videography
• CPC Class Codes: B64U 2101/35 for science, e.g. meteorology
• CPC Class Codes: B64U 30/10 Wings

Abstract

The illustrative embodiment of the present invention is a unmanned aerial vehicle that includes a sensing system for the detection and limited identification of biological agents. The system is small, light weight, requires little power to operate and uses few consumables. The system incorporates elements that enable it to obtain an air sample, extract particulates from the air sample and retain them on a stationary-phase collection media, exposes the particulates to electromagnetic radiation, and monitor the particulates for fluorescent emissions. To the extent that fluorescent emissions are detected and exceed a predetermined value, an alarm is triggered. In some embodiments, in addition to performing real-time analyses on the extracted particulates, the collection media is removed from the system and the sample is subjected to more detailed analysis via additional equipment. Various sample-collecting regions on the collection media are “time stamped” or “location stamped” so that it can determined when and/or where each sample that is being analyzed “off-line” was obtained.

Claims

1. An apparatus comprising:

a fuselage;

a wing, wherein said wing depends from said fuselage;

an intake for receiving air, wherein said intake comprises an opening in at least one of said wing and said fuselage;

a sensing system for detecting biological agents, wherein said sensing system is fluidically coupled to said intake, and wherein said sensing system obtains a first sample of particulates, wherein said particulates are contained in the air received by said intake;

a GPS receiver for determining location; and

a device for associating location, as determined by said GPS receiver, with said first sample, thereby providing an indication of a sampling location of said first sample.

2. The apparatus of claim 1 wherein said sensor is disposed in said wing.

3. The apparatus of claim 1 wherein said intake comprises an opening in a leading edge of said wing.

4. The apparatus of claim 3 wherein said sensing system is disposed in said wing.

5. The apparatus of claim 1 comprising a filter, wherein said filter overlies said intake.

6. The apparatus of claim 1 comprising circuitry for generating a signal, wherein said signal contains first information relating to said first sample of particulates.

7. The apparatus of claim 6 comprising a transceiver, wherein said transceiver receives second information, which is a sub-set of said first information, and transmits said second information to a ground station.

8. The apparatus of claim 1 wherein said sensing system retains said first sample of particulates.

9. The apparatus of claim 8 wherein said sensing system obtains a second sample of particulates, and wherein said sensing system retains said second sample of particulates.

10. The apparatus of claim 1 comprising a device for associating at least one of either a time or a time period with said first sample.

11. The apparatus of claim 9 wherein said device for associating location with said first sample also associates location with said second sample, thereby providing an indication of a sampling location of said second sample.

12. The apparatus of claim 1 wherein said sensing system comprises:

collection media, wherein said collection media comprises a plurality of sample-collecting regions;

means for positioning said sample-collecting regions, at different times, into a sample-collecting position in which they receive a flow of said air containing said particulates;

a source of electromagnetic radiation for exposing said sample-collecting regions to electromagnetic radiation one at a time; and

a photodetector for detecting fluorescent emissions from particulates that are retained in said sample-collecting regions and have been exposed to said electromagnetic radiation.

13. The apparatus of claim 12 wherein said device for associating location with said first sample also associates location with each sample-collecting region that has been positioned in said sample-collecting position.

14. The apparatus of claim 12 comprising circuitry for determining an amount of fluorescent emissions having a first wavelength.

15. The apparatus of claim 14 comprising circuitry for triggering an alert when said determined amount of fluorescent emissions at said first wavelength exceed a first value.

16. The apparatus of claim 12 comprising circuitry for intermittently activating said source of electromagnetic radiation to intermittently expose said sample-collecting regions to electromagnetic radiation.

17. An apparatus comprising:

a fuselage;

a wing, wherein said wing depends from said fuselage;

an intake for receiving air, wherein said intake comprises an opening in at least one of said wing and said fuselage;

a sensing system for detecting biological agents, wherein said sensing system comprises a collection media, wherein;

said collection media comprises a plurality of stationary-phase sample-collecting regions;

said collection media is fluidically coupled to said intake; and

said collection media retains a first sample of particulates on a first one of said stationary-phase sample-collecting regions and retains a second sample of particulates on a second one of said stationary-phase sample-collecting regions, wherein said particulates are contained in the air received by said intake;

a GPS receiver for determining location; and

a device for associating location, as determined by said GPS receiver, with at least one of;

a. said first sample and said second sample; and

b. said stationary-phase sample-collecting regions,

thereby providing an indication of sampling location.

18. The apparatus of claim 17 further comprising a device for associating at least one of time or a time period with said sample-collecting region that has retained said first sample of particulates and with said sample-collecting region that has retained said second sample of particulates.