System and method for adapting a software control in an operating environment

• US 20060291620A1
• Filed: 06/13/2006
• Published: 12/28/2006
• Est. Priority Date: 01/07/2002
• Status: Abandoned Application

• Current Assignee: CDEX Incorporated
• Original Assignee: CDEX Incorporated
• Inventors: Shriver, Timothy D., Cauthen, Harold K., Poteet, Wade M.
• Application Number:
  US11/451,509
• Publication Number:
  US 20060291620A1
• Time in Patent Office: Days
• US Class Current: 378/45
• CPC Class Codes: G01N 2223/076 X-ray fluorescence
• CPC Class Codes: G01N 2223/639 material in a container
• CPC Class Codes: G01N 2223/643 object on conveyor
• CPC Class Codes: G01N 23/223 by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
• CPC Class Codes: G01V 5/0008 Detecting hidden objects, e.g. weapons, explosives sorting of materials or articles according to radioactive properties B07C5/342; investigating or analysing materials by the use of wave or particle radiation G01N23/00
• CPC Class Codes: G01V 5/0069 Measuring induced radiation, e.g. thermal neutron activation analysis investigating or analysing materials by the use of neutrons G01N23/222
• CPC Class Codes: G01V 5/20 Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
• CPC Class Codes: G01V 5/234 Measuring induced radiation, e.g. thermal neutron activation analysis

Abstract

A system and method for detecting a substance using x-ray fluorescence is disclosed. The detected substances may be explosives or controlled substances that have a specific chemical fluorescent signature. An energy source transmits an x-ray beam at a target. The target may be in a container or under a surface. The beam interacts with the target to produce fluorescent energy. An x-ray detector is at an angle relative to the energy source and gathers the fluorescent energy. The angle differs according to the physical configuration of the system. A portable embodiment will have a different angle than a stationary embodiment. A cooling mechanism cools the x-ray detector. The fluorescent energy is analyzed and processed by a multichannel analyzer and a computer. The computer determines whether the fluorescent energy from the target matches known fluorescent energies of specific substances. If the substance is detected, appropriate indications are made to prevent damage or acceptance of the substance.

Claims

1. A system for detecting a substance, comprising”

an energy source to transmit an x-ray beam at a target to produce fluorescent energy;

an x-ray detector to detect said fluorescent energy from said target, wherein said x-ray detector is at an angle relative to said energy source;

a multichannel analyzer to receive said fluorescent energy from said x-ray detector; and

a computer coupled to said multichannel analyzer to determine whether said fluorescent energy corresponds to said substance.

2. The system of claim 1, further comprising a controller coupled to said energy source, wherein said controller provides power and control to said energy source.

3. The system of claim 1, further comprising a display to indicate status to a user of said detection system, wherein said display is coupled to said computer.

4. The system of claim 1, further comprising a shielded enclosure around said energy source.

5. The system of claim 1, wherein said angle is about 45 degrees to about 65 degrees.

6. The system of claim 1, wherein said substance is an explosive.

7. The system of claim 1, wherein said substance is a controlled substance having certain chemical properties.

8. A portable system for detecting a substance under a surface, wherein said system includes a detection module and a support module, comprising:

an energy source within said detection module to transmit an x-ray beam at a surface location, wherein said energy source is mounted on an equipment support;

an x-ray detector within said detection module to detect fluorescent energy from a vapor plume corresponding to said surface location, wherein said x-ray detector is at an angle relative to said energy source and mounted on said equipment support;

a portable multichannel analyzer within said support module to receive said fluorescent energy;

a computer within said support module coupled to said portable multichannel analyzer to determine whether said fluorescent energy corresponds to said substance; and

a battery within said support module to supply power to said detection module and said support module.

9. The portable system of claim 8, wherein said support module is a backpack.

10. The portable system of claim 8, further comprising a readout box coupled to said support module to display information.

11. The portable system of claim 8, wherein said substance under said surface is an explosive.

12. The portable system of claim 8, wherein said angle is about 25 degrees to about 40 degrees.

13. A method for detecting a substance, comprising:

directing an x-ray beam at a target from an energy source;

interacting said target with said beam to produce fluorescent energy;

detecting said fluorescent energy from an x-ray at an angle from said energy source;

analyzing said fluorescent energy to determine whether said fluorescent energy corresponds to said substance.

14. The method of claim 13, wherein said analyzing includes comparing said fluorescent energy to a signal spectrum of known substances.

15. The method of claim 13, further comprising indicating whether said target is said substance.

16. The method of claim 13, further comprising processing said fluorescent energy with a multichannel analyzer.

17. A method for detecting a substance, comprising:

providing power to an energy source to transmit an x-ray beam;

producing fluorescent energy from an item in response to said x-ray beam;

detecting said fluorescent energy over an integration period at an x-ray detector;

processing said fluorescent energy; and

determining whether said item is said substance according to said fluorescent energy.

18. The method of claim 17, further comprising moving said item on a conveyor belt.

19. The method of claim 17, further comprising cooling said x-ray detector.

20. The method of claim 17, further comprising adjusting said x-ray beam using a controller coupled to said energy source, to compensate for background noise.