The present invention relates to a LED-based traffic signalling device (10) and a process for controlling traffic signalling. The LED-based traffic signalling device (10) includes a light emitting signal area (12). The light emitting signal area (12) comprises a plurality of LEDs arranged in at least two separately controllable sets of LEDs (20, 22), wherein a visual output from the light emitting signal area (12) having a first set of the LEDs (20) activated corresponds to a visual output from the light emitting signal area (12) having a second set of the LEDs (22) activated, a LED operation detector (38) connected to the first set of LEDs (20) being configured to detect that the LEDs of the first set of LEDs (20) is failing in emitting required luminance and including a status output configured to indicate failure of the first set of LEDs if failure of the first set of LEDs is detected, and a switch (36) controlled by the output from the LED operation detector (38) and configured to activate the second set of LEDs (22) in response to the output of the LED operation detector (38) indicating failure of the first set of LEDs (20).
TRAFFIC SIGNALLING DEVICE AND PROCESS FOR CONTROLLING TRAFFIC SIGNALING DEVICE
VERKEHRSSIGNALANLAGE UND VERFAHREN ZUR STEUERUNG DER VERKEHRSSIGNALVORRICHTUNG
DISPOSITIF DE SIGNALISATION DE TRAFIC ET PROCÉDÉ DE COMMANDE DE DISPOSITIF DE SIGNALISATION DE TRAFIC
2020-11-18
Patent
Electronic Resource
English
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |