Manuel Rico-Secades, Member, IEEE, Antonio J. Calleja, Member, IEEE, Javier Ribas, Member, IEEE,
Emilio L. Corominas, Member, IEEE, J. Marcos Alonso, Senior Member, IEEE, Jesús Cardesín, Member, IEEE, and
Jorge García-García, Student Member, IEEE
Abstract
Nowadays, Permanent Emergency Lighting Systems
(PELSs) are widely used in many applications, including emergency
exit indication and lighting in critical or strategic points.
Limitation in operation hours in classical lamps (10 000–20 000 h
for fluorescent lamps) implies short lamp replacement times and,
therefore, high maintenance costs. This paper shows an alternative
solution based on high-efficiency LEDs. The long operation life
(above 100 000 h) of high-efficiency LEDs with a very simple electronics
circuitry implies an interesting solution for these types of
applications. A 30-lm and 1-h PELS has been built and tested. A
low-cost power supply has been built and used as a battery charger
and LED driver.
LINK
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