Title :
Single LED failure detection using I-V characteristic slope in railway signals
Author_Institution :
Appl. Electron. & Telecommun. Dept., Univ. of West Bohemia in Pilsen, Pilsen, Czech Republic
Abstract :
This paper proposes a method for monitoring proper function of light emitting diodes (LED) in railway optical signals, based on measurement of its I-V characteristics with specific driving of its currrent source. Dual channel redundant monitoring circuit measures and monitors the proper function of LED and its supply converter and and sends the information on its state to the upper level interlocking system.
Keywords :
light emitting diodes; power convertors; railway engineering; signalling; I-V characteristic slope; dual channel redundant monitoring circuit; light emitting diode monitoring; railway optical signals; single LED failure detection; supply converter; upper level interlocking system; Current measurement; Equations; Light emitting diodes; Mathematical model; Monitoring; Rail transportation; Voltage measurement; LED lamps; Railway safety; Railway signal;
Conference_Titel :
Applied Electronics (AE), 2013 International Conference on
Conference_Location :
Pilsen
Print_ISBN :
978-80-261-0166-6
