Sample collection by directed air flow for scent detection

Patent metadata

Field	Value
Publication number	US-11415490-B2
Application number	US-202217698898-A
Country	US
Kind code	B2
Filing date	Mar 18, 2022
Priority date	Oct 16, 2020
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

In an example, a sample collection apparatus to collect sample from a detection subject disposed in a sample collection zone includes a circumferential ring tubing surrounding an interior and configured to be moved between first ring tubing position and second ring tubing position. The circumferential ring tubing includes air nozzles along a circumferential length of the ring tubing to direct targeted air flow within the sample collection zone as the ring tubing is moved between the first ring tubing position and the second ring tubing position, to blow air toward the detection subject in the sample collection zone in the interior and to push a sample of the detection subject via an air flow toward a receptacle. Adjustable actuators are affixed along a periphery of the circumferential ring tubing to adjust the circumferential length of the circumferential ring tubing between a first circumferential length and a second circumferential length.

First claim

What is claimed is:

1. A sample collection apparatus to collect sample from a detection subject disposed in a sample collection zone, the sample collection apparatus comprising:
a receptacle;
a circumferential ring tubing with an adjustable circumferential length positioned between a first ring tubing position and a second ring tubing position disposed on at least two sides of the sample collection zone, the sample collection zone encompassed by the circumferential ring tubing movable between the first ring tubing position and the second ring tubing position, at least a portion of the sample collection zone being disposed between the first ring tubing position and the second ring tubing position;
a plurality of air nozzles disposed within the sample collection zone to direct targeted air flow within the sample collection zone when the circumferential ring tubing is moved between the first ring tubing position to the second ring tubing position, and to push a sample of the detection subject substantially toward the receptacle;
a plurality of circumferential lengths for the circumferential ring tubing; and,
adjustable actuators affixed along a periphery of the circumferential ring tubing to adjust the circumferential length of the circumferential ring tubing between a first circumferential length and a second circumferential length.

2. The sample collection apparatus of claim 1 ,
wherein the air nozzles are oriented between an angle of about 0° horizontally inward toward the sample collection zone and an angle of less in magnitude than about −90° vertically downward.

3. The sample collection apparatus of claim 2 ,
wherein the air nozzles are oriented between an angle of about −5° inward toward the sample collection zone and an angle of about −15° partially inward and partially downward.

4. The sample collection apparatus of claim 1 ,
wherein the circumferential ring tubing includes a plurality of linear tubes interlinked together; and,
wherein the adjustable actuators are aligned with one or more of the plurality of linear tubes of the circumferential ring tubing to change the circumferential length of the circumferential ring tubing to shrink the circumferential ring tubing to a smaller circumferential length and to expand the circumferential ring tubing to a larger circumferential length.

5. The sample collection apparatus of claim 1 , further comprising:
a plurality of sensors disposed on the circumferential ring tubing to detect shape and size of the detection subject to produce detection data; and,
a controller to control the circumferential length adjusting telescoping actuators to adjust the circumferential length of the circumferential ring tubing based on the detection data.

6. The sample collection apparatus of claim 5 ,
wherein the controller is configured to control the circumferential length adjusting telescoping actuators to adjust the circumferential length of the circumferential ring tubing to keep a distance between the circumferential ring tubing and the detection subject to within a preset distance range.

7. The sample collection apparatus of claim 1 , further comprising:
a plurality of translational stanchions to which the circumferential ring tubing is slidably attached to travel translationally between the first ring tubing position and the second ring tubing position.

8. The sample collection apparatus of claim 1 , further comprising:
a platform on which the detection subject is positioned;
wherein the receptacle is disposed below the platform to collect the sample of the detection subject carried by the targeted air flow through a plurality of collection openings of the platform to the receptacle; and,
wherein the first ring tubing position is disposed farther away from the platform than the second ring tubing position.

9. A sample collection method to collect sample from a detection subject disposed in a sample collection zone, the method comprising:
placing a circumferential ring tubing at a first ring tubing position at or near a first side of the sample collection zone;
moving the circumferential ring tubing translationally between the first ring tubing position and a second ring tubing position at or near a second side of the detection subject opposite from the first side of the sample collection zone which is surrounded by the circumferential ring tubing moving between the first ring tubing position and the second ring tubing position;
blowing air through a plurality of air nozzles along a circumferential length of the circumferential ring tubing to direct an air flow toward the sample collection zone as the circumferential ring tubing is moved between the first ring tubing position and the second ring tubing position to blow air toward the sample collection zone as the circumferential ring tubing is moved between the first ring tubing position and the second ring tubing position, and to push a sample of the detection subject via the air flow toward a receptacle, the sample including at least one of particles and vapor of the detection subject; and,
adjusting a circumferential length of the circumferential ring tubing, using a plurality of circumferential length adjusting telescoping actuators disposed on the circumferential ring tubing, to contract the circumferential ring tubing by decreasing the circumferential length and to expand the circumferential ring tubing by increasing the circumferential length as the circumferential ring tubing is moved between the first ring tubing position and the second ring tubing position.

10. The sample collection method of claim 9 , further comprising:
orienting the air nozzles for blowing air toward the detection subject between an angle of about 0° horizontally inward toward the sample collection zone and an angle of less in magnitude than about −90° vertically downward.

11. The sample collection method of claim 10 ,
wherein the air nozzles are oriented between an angle of about −5° inward toward the sample collection zone and an angle of about −15° partially inward and partially downward.

12. The sample collection method of claim 9 ,
wherein the circumferential ring tubing includes a plurality of linear tubes connected together; and
wherein the plurality of circumferential length adjusting telescoping actuators are coupled with the plurality of linear tubes of the circumferential ring tubing to adjust a circumferential length of the circumferential ring tubing to contract the circumferential ring tubing by decreasing the circumferential length and to expand the circumferential ring tubing by increasing the circumferential length.

13. The sample collection method of claim 9 , further comprising:
detecting shape and size of the detection subject, using a plurality of sensors disposed on the circumferential ring tubing, to produce detection data; and,
controlling the circumferential length adjusting telescoping actuators to adjust the circumferential length of the circumferential ring tubing based on the detection data.

14. The sample collection method of claim 13 ,
wherein the circumferential length adjusting telescoping actuators are controlled to adjust the circumferential length of the circumferential ring tubing to keep a distance between the circumferential ring tubing and the detection subject to within a preset distance range based on the detection data.

15. The sample collection method of claim 9 , further comprising:
adjusting the circumferential length of the circumferential ring tubing, by controlling the circumferential length adjusting telescoping actuators, to keep a distance between the circumferenti

Assignees

• The Government Of The Us Secretary Of Homeland Security

Inventors

• Fry Mark

Classifications

• G01N1/28

  Preparing specimens for investigation {including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q}(mounting specimens on microscopic slides G02B21/34; means for supporting the objects or the materials to be analysed in electron microscopes H01J37/20 {; laboratory gas handling apparatus B01L5/00}) · CPC title

• G01N2001/024

  passengers or luggage · CPC title

• G01N1/2247

  Sampling from a flowing stream of gas · CPC title

• G01N2001/248

  Evacuated containers · CPC title

• G01N2001/2223

  aerosol sampling devices · CPC title