Foreign object detection system and method

• US 7,253,748 B2
• Filed: 06/06/2005
• Issued: 08/07/2007
• Est. Priority Date: 10/28/2002
• Status: Expired due to Term

• Current Assignee: X - Sight Systems Limited
• Original Assignee: X - Sight Systems Limited
• Inventors: Goner, Aviv, Fisher, Moshe, Golan, Aviram, Nitzan, Alon
• Primary Examiner(s): Lee; Benjamin C.
• Assistant Examiner(s): Mehmood; Jennifer
• Application Number:
  US11/145,897
• Publication Number:
  US 20070008185A1
• Time in Patent Office: 792 Days
• Field of Search: 340945-983, 340541-567, 342 29- 40, 382/103, 382/104, 701/301
• US Class Current: 340/945
• CPC Class Codes: B64F 1/18 Visual or acoustic landing aids
• CPC Class Codes: G06T 2207/30108 Industrial image inspection
• CPC Class Codes: G06T 2207/30236 Traffic on road, railway or crossing
• CPC Class Codes: G06T 7/0002 Inspection of images, e.g. flaw detection
• CPC Class Codes: G06T 7/0004 Industrial image inspection
• CPC Class Codes: G06T 7/254 involving subtraction of images
• CPC Class Codes: G06T 7/292 Multi-camera tracking
• CPC Class Codes: G08G 5/0026 located on the ground
• CPC Class Codes: G08G 5/0082 for monitoring traffic from a ground station radar or analogous systems specially adapted for traffic control G01S13/91
• CPC Class Codes: G08G 5/045 Navigation or guidance aids, e.g. determination of anti-collision manoeuvers radar or analogous systems specially adapted for anti-collision between aircraft G01S13/933
• CPC Class Codes: G08G 5/065 Navigation or guidance aids, e.g. for taxiing or rolling
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

A system for detection of foreign objects on airport travel surfaces including a plurality of foreign object detector modules mounted on a corresponding plurality of existing aircraft travel surface lighting supports, the plurality of foreign object detector modules providing a corresponding plurality of detection outputs and a high speed detection output analyzer operative to receive at least one of the plurality of detection outputs and to provide a high speed output indication of foreign object presence.

Claims

1. A system for detection of objects on airport travel surfaces comprising:

a plurality of object detector modules mounted together with a corresponding plurality of aircraft travel surface lights, at least one of said plurality of object detector modules including;

an object sensor module including at least one imaging assembly providing at least one image detection output; and

a local processing module including multiple sensor correlation software which receives said at least one image detection output from multiple ones of said at least one imaging assembly and provides at least one output, including at least an initial determination of whether an object is present, based on the correlation between said image detection output from said multiple ones of said at least one imaging assembly; and

a high speed image detection output analyzer operative to receive said at least one output and to provide a high speed output indication of object presence.

2. A system for detection of objects on airport travel surfaces according to claim 1 wherein said airport travel surfaces include at least one of at least one taxiway and at least one runway and said system employs at least some existing electrical power infrastructure associated with existing runway and taxiway lighting fixtures.

3. A system for detection of objects on airport travel surfaces according to claim 1 and wherein said plurality of object detector modules communicate with a computer system operative to provide an object presence alarm.

4. A system for detection of objects on airport travel surfaces according to claim 1 and also including a pointer associated with at least one of said plurality of object detector modules.

5. A system for detection of objects on airport travel surfaces according to claim 1 and also comprising controlling software which comprises:

a communication module which handles communications with said plurality of detector modules via a communications network; and

management software which interfaces with said communications module.

6. A system for detection of objects according to claim 1 and wherein said high speed detection output analyzer employs image analysis.

7. A system for detection of objects on airport travel surfaces according to claim 1 and wherein said plurality of object detector modules comprise a plurality of cameras, and wherein said cameras have at least partially overlapping fields of view.

8. A system for detection of objects on airport travel surfaces according to claim 1 and wherein at least one of said plurality of object detector modules incorporates at least one object sensor module which provides said output to said high speed detection output analyzer which is remotely located with respect thereto.

9. A system for detection of objects according to claim 8 and wherein said high speed detection output analyzer comprises multiple detector correlation software providing an output based on the correlation between said output from multiple ones of said at least one object sensor module in multiple ones of said plurality of object detector modules.

10. A system for detection of objects on airport travel surfaces according to claim 1 wherein each of said plurality of object detector modules comprises an object sensor module comprising at least one imaging assembly.

11. A system for detection of objects on airport travel surfaces according to claim 1 wherein each of said plurality of object detector modules also has associated therewith at least one of a light level sensor, a vibration sensor and a temperature sensor.

12. A system according to claim 5 and wherein said management software interfaces with existing airport control systems, and with a database, a graphical user interface having image manipulation capability and an alarm indicator.

13. A system for detection of objects on airport travel surfaces according to claim 1 and also comprising a storage unit, for storing said outputs in a time sequence and wherein said high speed detection output analyzer is operative to compare said outputs to said stored outputs.

14. A system for detection of objects on airport travel surfaces according to claim 1 and wherein said plurality of object detector modules have at least partially overlapping fields of view.

19. A system for detection of objects according to claim 1 and wherein said multiple sensor correlation software is operative to distinguish detected patterns extending over fields of view of said multiple ones of said at least one imaging assembly.

20. A system for detection of objects according to claim 9 and wherein said multiple detector correlation software is operative to distinguish detected patterns extending over fields of view of said multiple ones of said at least one object sensor module in multiple ones of said plurality of object detector modules.

15. A method for detection of objects on airport travel surfaces comprising:

mounting a plurality of object detector modules, each of said plurality of object detector modules including at least one imaging assembly, together with a corresponding plurality of aircraft travel surface lights, at least one of said plurality of object detector modules including multiple imaging assemblies and a local processing module;

operating said multiple imaging assemblies and providing corresponding multiple image detection outputs; and

analyzing at least one output at high speed to provide a high speed output indication of object presences,

said local processing module including multiple sensor correlation software operative to receive said multiple image detection outputs and to provide said at least one output, including at least an initial determination of whether an object is present, based on the correlation between said multiple image detection outputs.

16. A method for detection of objects on airport travel surfaces according to claim 15 wherein said airport travel surfaces include at least one of at least one taxiway and at least one runway, and the method comprises employing at least some existing electrical power infrastructure associated with existing runway and taxiway lighting fixtures.

17. A method for detection of objects on airport travel surfaces according to claim 15 and also comprising:

communicating with said plurality of object detector modules, via a communications network;

interfacing said communications network with management software; and

interfacing said management software with at least one of existing airport control systems, a database, a graphical user interface having image manipulation capability and an alarm indicator.

18. A method for detection of objects on airport travel surfaces according to claim 15 and wherein said multiple sensor correlation software is operative to distinguish detected patterns extending over fields of view of said multiple imaging assemblies.