Evaluation of a low cost permanent emergency lighting system based on high efficiency LEDs

Author

Rico-Secades, M. ; Calleja, A.J. ; Ribas, J. ; Corominas, E.L. ; Alonso, J.M. ; Cardesín, J. ; García, J.

Author_Institution

Univ. of Oviedo, Gijon, Spain

Volume

1

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

542

Abstract

Nowadays, permanent emergency lighting systems (PELS) are widely used in many applications: emergency exit indication, lighting in critical or strategic points. Limitation in operation hours in classical lamps (10000-20000 hours for fluorescent lamps) implies short lamp replacement times and, therefore, high maintenance costs. This paper shows an alternative solution based on high efficiency LED´s. The long operation life (above 100000 hours) of high efficiency LEDs with a very simple electronics circuitry implies an interesting solution for this type of application. A 30 lumens and 1 hour PELS has been built and tested. A low cost power supply has been built and used as battery charger and LED driver.

Keywords

LED lamps; battery chargers; driver circuits; lighting; power supplies to apparatus; LED drive; battery charger; electronics circuitry; emergency exit indication; high efficiency LEDs; long operation life; low cost; permanent emergency lighting system; power supply; Assembly; Batteries; Circuits; Costs; Emergency lighting; Fluorescent lamps; LED lamps; Light emitting diodes; Prototypes; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257553

Filename

1257553