Inspection system for limited access spaces

• US 7,359,042 B2
• Filed: 09/23/2002
• Issued: 04/15/2008
• Est. Priority Date: 09/23/2002
• Status: Expired due to Term

• Current Assignee: S.T.I. Security Technology Integration Ltd.
• Original Assignee: S.T.I. Security Technology Integration Ltd.
• Inventors: Ovadia, Yuval
• Primary Examiner(s): Pham; Hoa Q.
• Application Number:
  US10/252,040
• Publication Number:
  US 20040057042A1
• Time in Patent Office: 2,031 Days
• Field of Search: 3562371-2375, 356/394, 356601-623, 348/148, 348/143
• US Class Current: 356/237.1
• CPC Class Codes: G01N 2021/889 providing a bare video image, i.e. without visual measurement aids
• CPC Class Codes: G01N 2021/95615 with stored comparision signal
• CPC Class Codes: G01N 21/88 Investigating the presence of flaws or contamination
• CPC Class Codes: G01N 2201/022 Casings
• CPC Class Codes: G01N 23/20 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials

Abstract

A limited access space inspection system comprising: an imaging device for imaging a region in the limited access space, a mounting for mounting the imaging device to scan about the limited access space and a scanning control unit, associated with the imaging device, for controlling the imaging device to scan about the limited access space. The device is particularly useful for improving by automation, security checks customs checks and safety checks involving such awkward to access spaces.

Claims

1. A limited access space inspection system for inspecting by scanning instances of a predetermined set of defined limited access spaces, the system comprising:

an imaging device for imaging a region in any one of said defined limited access spaces, said limited access spaces comprising inwardly reaching recesses,

a mounting for movably mounting said imaging device to be scannable through linear and rotary motion about said inwardly reaching recesses of limited access spaces and

a scanning control unit, associated with said imaging device, configured to control said imaging device to scan about said inwardly reaching recesses of said limited access spaces according to a selected one of respective pre-recorded programs, said program selectable for said instance within said set and comprising instructions for moving said imaging device linearly along a track, for rotating said imaging device about an axis perpendicular to said track, and for rotating said imaging device about an axis parallel to said track, thereby to navigate said imaging device about said inwardly reaching recesses of said limited access spaces, thereby to configure said scan for said instance.

2. The system of claim 1, further comprising a protective housing for protecting said imaging device from the environment by interposing between at least said imaging device and said region to be imaged.

3. The system of claim 2, wherein said protective housing comprises a transparent region located between said imaging device and said region to be imaged.

4. The system of claim 3, wherein said transparent region comprises laminated glass.

5. The system of claim 4, wherein said laminated glass is triplex laminated glass.

6. The system of claim 1, wherein said mounting is a floor mounting for mounting said imaging device at floor level.

7. The system of claim 6, wherein said mounting is a flush floor mounting for insertion into a floor cavity.

8. The system of claim 1, wherein said mounting comprises a camera track for movably bearing said imaging device.

9. The system of claim 8, wherein said imaging device is linearly movable along said camera track, is rotatable about an axis perpendicular to said track, and is further rotatable about an axis parallel to said track.

10. The system of claim 9, wherein said scanning control unit is controllable by at least one of direct user input and by preprogramming, to scan said imaging device about said limited access space.

11. The system of claim 1, wherein said mounting comprises guide tracks for guiding a vehicle thereover, an underside of said vehicle thereby forming said limited access space.

12. The system of claim 1, further comprising an illumination source for providing illumination to said limited access space.

13. The system of claim 1, further comprising a display output for providing a display signal.

14. The system of claim 13, further comprising an image processor, located between said imaging device and said display output to process images from said imaging device prior to output.

15. The system of claim 14, wherein said image processor is operable to compare a current image of said region with a previous image to detect differences therebetween.

16. The system of claim 1, wherein said imaging device is configured to scan about said limited access space according to preprogrammed instructions input to said scanning control unit.

17. The system of claim 16, configured such that said instructions vary depending on vehicle type.

18. A vehicle underside inspection system for inspecting by scanning instances of a predetermined set of defined limited access spaces, the system comprising:

a floor mounted track,

an imaging device to be scannable through linear and rotary motion mounted on said floor track;

a scanning control unit, associated with said imaging device, configured to control said imaging device to scan about said vehicle underside, said vehicle underside comprising inwardly reaching recesses, according to a pre-recorded program, said program being variable between vehicle type and comprising instructions for moving said imaging device to scan said inwardly reaching recesses, said moving comprising motions linearly along a track, motions for rotating said imaging device about an axis perpendicular to said track, and motions for rotating said imaging device about an axis parallel to said track, said program thereby configuring said scan for specific vehicle type; and

a display output, associated with said imaging device, for providing a display signal of output of said imaging device.

19. The system of claim 18, further comprising a scanning controller for controlling said imaging device to scan an imaging region over said floor track.

20. The system of claim 19, wherein said imaging device is rotatable about an axis perpendicular to said floor track, and is further rotatable about an axis parallel to said floor track.

21. The system of claim 18, wherein said floor mounted track comprises an outer housing and wherein said imaging device is sealed within said outer housing.

22. A method of scanning a limited access space of a set of differently configured spaces, the limited access space having inwardly reaching recesses, the method comprising:

preprogramming a linear track into each of said spaces of said set, thereby to provide specific scanning program for each space of said set, said linear track having an imaging device movably mounted thereon, said linear track being selected to probe said inwardly reaching recesses, and

moving said imaging device along said track, according to said specific scanning program, thereby to scan said space through linear and rotary motion, wherein said preprogramming is carried out using instructions for moving said imaging device linearly along said track, instructions for rotating said imaging device about an axis perpendicular to said track, and instructions for rotating said imaging device about an axis parallel to said track.

23. The method of claim 22, wherein said preprogramming said linear track into said space comprises locating a vehicle over said track, an underside of said vehicle forming said limited access space.

24. The method of claim 23, wherein said linear track is flush with a floor.

25. The method of claim 22, further comprising interpolating an illumination source into said space.