Self-contained mobile inspection system and method

• US 7,486,768 B2
• Filed: 09/13/2004
• Issued: 02/03/2009
• Est. Priority Date: 07/23/2002
• Status: Expired due to Fees

• Current Assignee: Rapiscan Systems Incorporated (OSI Systems Incorporated)
• Original Assignee: Rapiscan Security Products USA Incorporated (OSI Systems Incorporated)
• Inventors: Kotowski, Andreas F., Allman, Bryan
• Primary Examiner(s): Kiknadze; Irakli
• Application Number:
  US10/939,986
• Publication Number:
  US 20060056584A1
• Time in Patent Office: 1,604 Days
• Field of Search: 378/102, 378196-198, 378205-207, 378/160, 378/57, 378/58, 378/62, 378/146, 378147-153, 378/86
• US Class Current: 378/57
• CPC Class Codes: G01V 5/20 Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
• CPC Class Codes: G01V 5/222 measuring scattered radiation
• CPC Class Codes: G01V 5/232 having relative motion between the source, detector and object other than by conveyor G01V5/226 takes precedence

Abstract

The inspection methods and systems of the present invention are mobile, rapidly deployable, and capable of scanning a wide variety of receptacles cost-effectively and accurately on uneven surfaces. The present invention is directed toward a portable inspection system for generating an image representation of target objects using a radiation source, comprising a mobile vehicle, a detector array physically attached to a movable boom having a proximal end and a distal end. The proximal end is physically attached to the vehicle. The invention also comprises at least one source of radiation. The radiation source is fixedly attached to the distal end of the boom, wherein the image is generated by introducing the target objects in between the radiation source and the detector array, exposing the objects to radiation, and detecting radiation.

Claims

1. A portable inspection system for generating an image representation of target objects using a radiation source, comprising:

a movable boom comprising a first vertical portion which is physically attached to a platform, a first horizontal portion, and a second vertical portion;

a detector array physically attached to the first horizontal portion and second vertical portion of said movable boom; and

at least one source of radiation wherein said radiation source is located on said platform fixedly attached to a base of said first vertical portion of said boom and wherein said image is generated by introducing the target objects in between the radiation source and the detector array, exposing said objects to radiation, and detecting radiation; and

a collimator integrated into said first vertical portion of the movable boom wherein the first vertical portion stands between the radiation source and the detector arrays and wherein the first vertical portion maintains radiographic alignment of radiation emitted from said radiation source and said detector array.

2. The system of claim 1 further comprising a hydraulic or cable system located in the vehicle to move the boom.

3. The system of claim 1 further comprising at least one sensor to determine when a target object is positioned between the radiation source and the detector array.

4. The system of claim 3 wherein the sensor, upon being activated by the movement of a target object, transmits a signal to activate said radiation source.

5. The system of claim 1 wherein the detectors are angled at substantially 90 degrees relative to a focal point of said radiation source.

6. A method for inspecting objects using a portable inspection system that generates an image representation of a target object using a radiation source, comprising the steps of:

transporting a detector array and at least one source of radiation to an operation site using a vehicle, wherein said detector array is physically attached to a movable boom comprising a first vertical portion which is physically attached to a platform, a first horizontal portion, and a second vertical portion, and wherein said radiation source is fixedly attached to the platform fixedly attached to a base of the first vertical portion of said boom;

creating a detection region;

activating said radiation source;

directing radiation from said radiation source through a collimator integrated into said first vertical portion of the movable boom wherein the first vertical portion stands between the radiation source and the detector array and wherein the first vertical portion maintains radiographic alignment of radiation emitted from said radiation source and said detector array;

moving the target object through said detection region;

exposing the target object to radiation emitted from the radiation source wherein the exposing step results in secondary radiation; and

detecting secondary radiation by the detector array.

7. The method of claim 6 wherein the motion of the target object is substantially constant at a plurality of speed settings.

8. The method of claim 6 wherein the vehicle comprises a hydraulic or cable system to move said boom.

9. The method of claim 6 further comprising the step of optionally detecting when the target object enters the detection region.

10. The method of claim 6 wherein the boom has a first configuration and a second configuration.

11. The method of claim 6 wherein the detectors are angled at substantially 90 degrees relative to a focal point of said radiation source.