Imaging inspection apparatus

• US 7,177,391 B2
• Filed: 03/29/2005
• Issued: 02/13/2007
• Est. Priority Date: 03/29/2005
• Status: Active Grant

• Current Assignee: Surescan Corporation
• Original Assignee: Surescan Corporation
• Inventors: Chapin, Fletcher L., Kozol, John E.
• Primary Examiner(s): Glick; Edward J.
• Assistant Examiner(s): KAO, CHIH CHENG G
• Application Number:
  US11/091,521
• Publication Number:
  US 20060227932A1
• Time in Patent Office: 686 Days
• Field of Search: 378/57, 250/358.1, 250/359.1, 250/360.1
• US Class Current: 378/57
• CPC Class Codes: B65G 21/14 to allow adjustment of length or configuration of load-carrier or traction element varying speed of conveyance by adjusting configuration of load-carrier B65G23/00; tensioning arrangements for belt or chain B65G23/44
• CPC Class Codes: G01N 2223/419 computed tomograph
• CPC Class Codes: G01N 23/046 using tomography, e.g. computed tomography [CT]
• CPC Class Codes: G01V 5/20 Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects

Abstract

An imaging inspection apparatus which utilizes a plurality of individual imaging inspection devices (e.g., X-ray Computer Tomography scanning devices) positioned on a frame for directing beams onto articles having objects therein to detect the objects based on established criteria. The apparatus utilizes a conveyor which is not physically coupled to the frame having the imaging inspection devices to pass the articles along a path of travel to an inspection location within the apparatus, whereupon the inspection devices direct beams onto the article and the beams are detected and output signals provided to a processing and analysis assembly which analyzes the signals and identifies certain objects which meet the criteria.

Claims

1. An imaging inspection apparatus for inspecting objects located within moving articles, said imaging inspection apparatus comprising:

a single belt conveyor for conveying articles having objects located therein along a path of travel through an inspection location located substantially within said imaging inspection apparatus, said conveyor including a main portion and first and second end portions located on opposing ends of said main portion, said main portion and said first and second end portions adapted for being positioned in a substantially horizontal orientation during said conveying of said articles, said main portion of said conveyor not including a gap therein;

a frame structure;

a plurality of imaging inspection devices positioned on said frame and adapted for directing beams onto only said main portion of said conveyor and onto said articles as said articles move on said main portion of said conveyor and pass along said path of travel through said inspection location substantially within said imaging inspection apparatus to thereby inspect said articles, and for providing output signals as a result of said inspecting; and

a processing and analysis assembly adapted for receiving said output signals from said plurality of imaging inspection devices and for analyzing said output signals to identify said objects within said moving articles, said conveyor not being physically coupled to said frame structure and also adapted for being folded such that said main portion is at said substantially horizontal orientation and said first and second end portions are each positioned in a substantially vertical, upward orientation when said conveyor is not conveying said articles along said path of travel during which said conveyor is of a lesser length in said horizontal orientation than when said main portion and said first and second end portions are in said substantially horizontal orientation.

2. The imaging inspection apparatus of claim 1 wherein said conveyor includes a support deck structure, said single belt conveyor moving over said support deck structure when said conveyor conveys said articles along said path of travel.

3. The imaging inspection apparatus of claim 2 wherein said conveyor further includes a single drive for driving said single belt.

4. The imaging inspection apparatus of claim 1 wherein said plurality of imaging inspection devices each comprise an X-ray computer tomography (XCT) scanning device and said beams are X-rays.

5. The imaging inspection apparatus of claim 4 wherein the number of said XCT scanning devices is within the range of from about twenty to about forty devices.

6. The imaging inspection apparatus of claim 4 wherein said XCT scanning devices are positioned on said frame in at least three groupings, each grouping of said XCT scanning devices adapted for directing said X-rays along a different plane onto said main portion of said conveyor within said inspection location located substantially within said imaging inspection apparatus.

7. The imaging inspection apparatus of claim 6 further including a plurality of X-ray detectors positioned on said frame and adapted for receiving said X-rays from selected ones of said XCT scanning devices as said X-rays pass through said articles on said conveyor as said articles move along said path of travel through said inspection location located substantially within said imaging inspection apparatus.

8. The imaging inspection apparatus of claim 6 wherein said XCT scanning devices of a first grouping of said three groupings are positioned substantially vertically above said inspection location located substantially within said imaging inspection apparatus, and said XCT scanning devices of second and third groupings of said three groupings are positioned along opposite sides of said inspection location located substantially within said imaging inspection apparatus.

9. The imaging inspection apparatus of claim 8 wherein the number of said XCT scanning devices in said first grouping is fourteen and the number of said XCT scanning devices in each of said second and third groupings is seven.

10. The imaging apparatus of claim 1 wherein said plurality of imaging inspection devices each comprise an X-ray computer tomography (XCT) scanning device and said beams are X-rays, said XCT scanning devices being positioned on said frame in at least three groupings, each grouping of said XCT scanning devices being positioned relative to said main portion of said conveyor and adapted for directing said X-rays along a different plane onto only said main portion within said inspection location located substantially within said imaging inspection apparatus, each of said planes being substantially perpendicular to said main portion.

11. The imaging inspection apparatus of claim 10 further including a plurality of X-ray detectors positioned on said frame relative to said main portion of said conveyor and adapted for receiving said X-rays from selected ones of said XCT scanning devices as said X-rays pass through said articles on said main portion of said conveyor as said articles move along said path of travel through said inspection location located substantially within said imaging inspection apparatus.