Siemens Mobility Gmbh

Jeffrey Smith

Axel Beier

David Cowen

A light emitting diode (LED) shielding and monitoring system includes multiple light emitting diodes (LEDs) (), multiple optical detectors () for detecting a light output of the plurality of LEDs (), and a LED shield () with multiple compartments () for receiving the multiple optical detectors (). The LED shield () is configured such that each compartment () receives an optical detector (), and wherein each compartment () is configured such that the optical detector () within the compartment () detects the light output of a LED () of the multiple LEDs () without detecting light output other than the light output of the LED (). Further, wayside LED signals including a LED shielding and monitoring system are provided.

LED shielding and monitoring system and wayside LED signals

A monitoring system for a light emitting diode (LED) signal () includes optical detectors () for measuring a light output of LEDs (), a first processing unit () in communication with the plurality of optical detectors () and configured to receive and process measurement data of the light output from the plurality of optical detectors (), and a first switching element () operably coupled to the first processing unit (). The first processing unit () is further configured to transmit a control signal based on the measurement data of the light output of the plurality of LEDs () to the first switching element () to disconnect a reference load () by switching from a first state to a second state when the light output is less than a predefined threshold value, wherein the second state of the first switching element () is stored in a storage medium ().

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Chippenham, United Kingdom

Jeffrey Smith