SYSTEM AND METHOD FOR DETERMINING CHARACTERISTIC INFORMATION OF AN OBJECT POSITIONED ADJACENT TO A ROUTE

• US 20100090135A1
• Filed: 10/10/2008
• Published: 04/15/2010
• Est. Priority Date: 10/10/2008
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Kumar, Ajith Kuttannair
• Granted Patent: US 7,772,539 B2
• Time in Patent Office: Days
• US Class Current: 250/566
• CPC Class Codes: B61L 23/041 Obstacle detection
• CPC Class Codes: B61L 29/30 Supervision, e.g. monitoring arrangements
• CPC Class Codes: G07C 5/085 using electronic data carriers
• CPC Class Codes: G07C 5/0866 the electronic data carrier being a digital video recorder in combination with video camera

Abstract

A system is provided for determining characteristic information of an object positioned adjacent to a route. The system includes a first camera configured to collect a first set of spectral data of the object. The system further includes a second camera configured to collect a second set of spectral data of the object. The first and second cameras are attached to a powered system traveling along the route. The system further includes a controller coupled to the first camera and the second camera. The controller is configured to determine the characteristic information of the object based on the first set of spectral data and the second set of spectral data of the object. Additionally, a method is provided for determining characteristic information of the object positioned adjust to the route.

Claims

1. A system for determining one of an active status and a color of a light signal positioned adjacent to a route, said system comprising:

a thermal camera configured to collect infrared spectral data of said light signal, said first camera being attached to an exterior surface of a powered system traveling along said route;

a video camera configured to collect visible spectral data of said light signal, said video camera being attached to the exterior surface of the powered system; and

a controller coupled to said thermal camera and said video camera, said controller being configured to determine said one of the active status and color of the light signal based on said infrared spectral data and said visible spectral data of said light signal;

wherein said controller includes a memory to store a minimum active temperature required to activate the light signal, and wherein said controller is configured to determine said active status of said light signal, based upon;

said infrared spectral data including a light signal temperature greater than the minimum active temperature, and

said visible spectral data having an overlap ratio with said infrared spectral data which exceeds a predetermined overlap ratio stored in the memory.

2. The system of claim 1, wherein said powered system is one of an off-highway vehicle, a marine vehicle, a rail vehicle, a transport bus, and an agricultural vehicle.

7. The system of claim 1, wherein said controller includes a memory to store a predetermined visible spectrum for a respective plurality of colors of the light signal;

and said controller is further configured to determine said color of said light signal as an identified color among said plurality of colors, based upon;

said visible spectral data of said light signal being compared with the predetermined visible spectrum of the plurality of colors;

said visible spectral data of said light signal being within a predetermined range of the predetermined visible spectrum of the identified color among said plurality of colors.

8. The system of claim 1, wherein said controller is configured to determine an inactive light signal status based upon said infrared spectral data of said light signal indicating a light signal temperature lower than the minimum active temperature.

9. The system of claim 1, wherein said controller is configured to determine an inactive light signal status based upon said infrared spectral data of said light signal having overlapped with said visible spectral data of said light signal by less than the predetermined overlap ratio.

10. The system of claim 1, wherein said light signal is a colored light signal having a colored coating covering over at least a portion of said colored light signal, said controller is configured to distinguish between:

an active status of the light signal based upon said light signal temperature exceeding said minimum active temperature; and

an inactive status of the light signal based upon said light signal temperature being lower than said minimum active temperature.

11. The system of claim 1, wherein said thermal and video cameras are configured to process pixels within an adjustable field of view, said adjustable field of view being adjusted to coincide with said light signal;

and wherein said controller includes a memory configured to store at least one expected position of said light signal along said route.

12. The system of claim 11, further comprising:

a position determination device to determine a position of said powered system along said route;

wherein;

at one of a plurality of incremental locations along the route, said controller is configured to compare the position of the powered system with said expected position;

upon said position of the powered system having reached said expected position, said controller is configured to transmit a signal to said thermal camera to collect said infrared spectral data of said light signal positioned at said expected position;

said controller is further configured to transmit a signal to said video camera to collect said visible spectral data of said light signal positioned at said expected position; and

the respective field of view of said thermal and video cameras is adjusted to collect said respective infrared first and visible set of spectral data of said light signal positioned at said expected position.

13. The system of claim 11, wherein said memory is configured to further store at least one position parameter of said light signal at each expected position;

and said field of view is adjusted based upon said at least one position parameter stored in the memory to collect said infrared and visible set of spectral data of said light signal positioned at said expected position.

14. The system of claim 13, wherein said at least one position parameter comprises at least one of a perpendicular distance from a ground portion to said light signal and a distance from a portion of said route to said ground portion.

15. The system of claim 1, wherein said thermal imaging camera and said video camera are configured to determine said active status of said light signal and/or the color of said light signal as indicative of at least one of an upcoming condition along the route, or at least one topographic characteristic along the route.

3-6. -6. (canceled)

16-17. -17. (canceled)

18. A method for determining one of an active status and a color of a light signal positioned adjacent to a route, said method comprising:

collecting a infrared set of spectral data of said light signal;

collecting a visible set of spectral data of said light signal; and

determining said one of the active status and the color of said light signal based on said infrared set of spectral data and said visible set of spectral data of said light signal;

storing a minimum active temperature required to activate the light signal;

determining said active status of said light signal, based on the steps of;

determining if a light signal temperature of said infrared set of spectral data exceeds the minimum active temperature, and

determining if an overlap ratio of said visible data of said light signal with said infrared spectral data of said light signal exceeds a predetermined overlap ratio stored in the memory.

23. The method of claim 18, further comprising:

storing a predetermined visible spectrum for a respective plurality of colors of the light signal;

determining said color of said light signal as an identified color among said plurality of colors, based upon the steps of;

comparing said visible spectral data of said light signal with the predetermined visible spectrum of the plurality of colors;

determining whether said visible spectral data of said light signal is within a predetermined range of the predetermined visible spectrum of the identified color among said plurality of colors; and

determining if an overlap ratio of said visible spectral data of said light signal with said infrared spectral data of said light signal exceeds a predetermined overlap ratio stored in the memory.

19-22. -22. (canceled)

24. A system for determining one of an active status and/or a color of a light signal positioned adjacent to a route of a rail vehicle, said system comprising:

a thermal imaging camera configured to collect non-visible spectral data of said light signal, said thermal imaging camera being attached to a powered system traveling along said route;

a video camera configured to collect visible spectral data of said light signal, said video camera being attached to the powered system; and

a controller coupled to said thermal imaging camera and said video camera, said controller being configured to determine said one of the active status and color of said light signal based on said non-visible spectral data and said visible spectral data of said light signal

wherein said system is positioned onboard of the rail vehicle, and said light signal is positioned wayside to the route of the rail vehicle.