System and method for monitoring status of a visual signal device
First Claim
1. A system for monitoring status of a visual signal lamp comprising:
- at least one optical fiber comprising a first end and a second end, said first end positioned proximate to said signal lamp and oriented to capture a portion of light signal emitted by said signal lamp when said signal lamp is illuminated;
a photodetector positioned proximate to said second end and configured to receive said portion of light signal;
a threshold detection circuitry connected to said photodetector and configured to detect a lighting parameter in relation to said signal lamp according to a predetermined criterion; and
a continuity checking circuitry configured to check continuity of said at least one optical fiber.
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Accused Products
Abstract
System and method for monitoring status of a visual signal lamp. The system includes at least one optical fiber comprising a first end and a second end. The first end is positioned proximate to the signal lamp and is oriented to capture a portion of light signal emitted by the signal lamp when the signal lamp is illuminated. The system also includes a photodetector positioned proximate to the second end of the optical fiber and configured to receive the portion of light signal. The system further includes a threshold detection circuitry connected to the photodetector and configured to detect a lighting parameter in relation to the signal lamp according to a predetermined criterion.
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Citations
55 Claims
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1. A system for monitoring status of a visual signal lamp comprising:
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at least one optical fiber comprising a first end and a second end, said first end positioned proximate to said signal lamp and oriented to capture a portion of light signal emitted by said signal lamp when said signal lamp is illuminated; a photodetector positioned proximate to said second end and configured to receive said portion of light signal; a threshold detection circuitry connected to said photodetector and configured to detect a lighting parameter in relation to said signal lamp according to a predetermined criterion; and a continuity checking circuitry configured to check continuity of said at least one optical fiber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for monitoring status of a visual signal lamp comprising:
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at least one optical fiber comprising a first end and a second end, said first end positioned proximate to said signal lamp and oriented to capture a portion of light signal emitted by said signal lamp when said signal lamp is illuminated; a continuity checking circuitry configured to check continuity of said at least one optical fiber; a photodetector positioned proximate to said second end and configured to receive said portion of light signal, wherein said photodetector comprises at least one selected from the group consisting of a photodiode, a phototransistor, a photomultiplier, and combinations thereof, a threshold detection circuitry connected to said photodetector and configured to detect a lighting parameter in relation to said signal lamp according to a predetermined criterion, wherein said lighting parameter comprises at least one selected from the group consisting of an intensity of light signal emitted by said signal lamp, a voltage across a lamp-head of said signal lamp, a flash rate of said signal lamp, and any combination thereof; a logical processor connected to said threshold detection circuitry and configured to determine a status of said signal lamp based on said lighting parameter; and an alerting system, wherein said logical processor is configured to send an alarm signal to said alerting system when there is a determined change in status of said signal lamp.
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19. A visual signal system comprising:
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at least one signal lamp; at least one first optical fiber comprising a first end and a second end, wherein said first end is positioned proximate to said signal lamp and oriented to capture a portion of light signal emitted by said signal lamp when said signal lamp is illuminated; a photodetector positioned proximate to said second end of said first optical fiber and configured to receive said portion of light signal; a continuity checking circuitry coupled to said first optical fiber and configured to check an continuity of said at least one first optical fiber; and a threshold detection circuitry connected to said photodetector and configured to detect a lighting parameter in relation to said signal lamp according to a predetermined criterion. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method for monitoring status of a visual signal lamp comprising:
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positioning at least one optical fiber proximate to said signal lamp and orienting said at least one optical fiber to capture a portion of light signal emitted by said signal lamp when said signal lamp is illuminated; checking continuity of said at least one optical fiber; capturing a portion of light signal emitted by said signal lamp using said at least one optical fiber when said signal lamp is illuminated; and detecting a lighting parameter in relation to said signal lamp according to a predetermined criterion. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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Specification