Monitoring system, wayside LED signaling device, and method for monitoring a wayside LED signaling device
AssigneeSiemens Industry, Inc.
InventorsTravis Pless, Barton DeJarnatt
Life of this patent
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Abstract
A monitoring system for a wayside signaling device includes a light emitting diode (LED) circuit with an LED array, a LED driver unit for driving the LED array, and a mechanism for connecting and disconnecting the LED circuit, and an optical light sensing circuit with a light-controlled variable resistor operably coupled to a resistor driver unit including relay functionality. The LED circuit and the sensing circuit are arranged such that the light-controlled variable resistor monitors an output of the LED array, and that the relay functionality triggers the mechanism to connect or disconnect the LED circuit based on the output of the LED array.
Claims15
A monitoring system for a wayside signaling device comprising:
- a light emitting diode (LED) circuit comprising at least one LED, a LED driver unit for driving the at least one LED, and a mechanism for connecting and disconnecting the LED circuit;
- an optical light sensing circuit comprising at least one light-controlled variable resistor operably coupled to a resistor driver unit comprising relay functionality;
- and
- a vital processing system, the LED circuit and the optical light sensing circuit being operably connected to the vital processing system,
- wherein the LED circuit and the sensing circuit are arranged such that the at least one light-controlled variable resistor monitors an output of the at least one LED, and that the relay functionality triggers the mechanism to connect or disconnect the LED circuit based on the output of the at least one LED, and
- wherein the LED circuit further comprises a passive inductor arranged in series with the at least one LED, and a passive bandpass filter arranged in parallel with an output of the vital processing system for performing cold filament checks.
A wayside light emitting diode (LED) signaling device comprising:
- a light emitting diode (LED) circuit comprising a LED array with a plurality of LEDs, a LED driver unit for driving the LED array, and a mechanism for connecting and disconnecting the LED circuit, and
- an optical light sensing circuit comprising at least one light-controlled variable resistor operably coupled to a resistor driver unit comprising a relay module,
- wherein the at least one light-controlled variable resistor is installed in proximity to the LED array to monitor an output of the LED array, and wherein the relay module is in communication with the mechanism to connect or disconnect the LED circuit based on the output of the LED array,
- wherein the LED signaling device is in communication with at least one vital processing system of a wayside interface unit configured to monitor and control the LED signaling device, and
- wherein the LED circuit further comprises a passive inductor arranged in series with the LED array, and a passive bandpass filter arranged in parallel with an output of the at least one vital processing system for performing cold filament checks.
Method for monitoring a light emitting diode (LED) circuit in a wayside light emitting diode (LED) signaling device comprising:
- installing a light emitting diode (LED) circuit comprising a LED array with a plurality of LEDs, a LED driver unit for driving the LED array, and a mechanism for connecting and disconnecting the LED circuit in a wayside LED signaling device,
- installing an optical light sensing circuit comprising at least one light-controlled variable resistor operably coupled to a resistor driver unit comprising a relay module in the wayside LED signaling device,
- wherein the at least one light-controlled variable resistor is placed in proximity to the LED array to monitor an output of the LED array, and wherein the relay module is in communication with the mechanism to connect or disconnect the LED circuit based on the output of the LED array, and
- further comprising operably connecting the LED signaling device to at least one vital processing system of a wayside interface unit configured to monitor and control the LED signaling device, wherein the LED circuit further comprises a passive inductor arranged in series with the LED array, and a passive bandpass filter arranged in parallel with an output of the vital processing system for performing cold filament checks.
Dependencies are inferred from the claim text.