| 摘要 |
To reduce or eliminate difficulties inherent in manual reporting of signal light failures, especially at remote railroad grade crossings, there is provided, in one embodiment of the present invention, a system for monitoring failure of a lighted signal that includes lighting configured to flash during a predetermined ala rm condition. The system includes a power supply configured to power the lighti ng during the predetermined alarm condition and to provide a timing signal indicative of power being applied to the lighting; a detector/transmitter responsive to th e timing signal to detect lighting parameters when the lighting is flashed on to generate a signal indicative of the lighting parameters and to generate a signal indicative of the lighting parameters; and a receiver/concentrator responsive to the signal indicative of the lighting parameters to generate a signal indicative of predetermined fault conditions of the lighting.
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