Use of inherent physical properties of LED for their safe monitoring in railway signaling
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F12%3A43916845" target="_blank" >RIV/49777513:23220/12:43916845 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Use of inherent physical properties of LED for their safe monitoring in railway signaling
Original language description
This paper proposes a method for monitoring proper function of light emitting diodes (LED) in railway optical signals, based on some inherent physical properties of this diodes and also on some physical properties of the optical system of the signal lamp. A partial reflection of light on optical interfaces in front of LED chip is used to evaluate the irradiated power of lighting LED. Switching two or more diodes enables to use their photoelectric properties as a photodetecting element. A simple relaxation oscillator, which uses internal capacity of LED's p-n juction is proposed as a simple analog interface to an MCU, which drives or monitors the lamp and sends the information on its state to the upper level interlocking system.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Applied Electronics
ISBN
978-80-261-0038-6
ISSN
1803-7232
e-ISSN
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Number of pages
4
Pages from-to
215-218
Publisher name
Západočeská univerzita v Plzni
Place of publication
Plzeň
Event location
Plzeň
Event date
Sep 5, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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