Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Functional analysis in long-term operation of high power UV-LEDS in continuous fluoro-sensing systems for hydrocarbon pollution
Year:2016
Research Areas
  • Solar cells,
  • Technology of devices for engineering
Information
Abstract
This work analyzes the long-term functionality of HP (High-power) UV-LEDs (Ultraviolet Light Emitting Diodes) as the exciting light source in non-contact, continuous 24/7 real-time fluoro-sensing pollutant identification in inland water. Fluorescence is an effective alternative in the detection and identification of hydrocarbons. The HP UV-LEDs are more advantageous than classical light sources (xenon and mercury lamps) and helps in the development of a low cost, non-contact, and compact system for continuous real-time fieldwork. This work analyzes the wavelength, output optical power, and the effects of viscosity, temperature of the water pollutants, and the functional consistency for long-term HP UV-LED working operation. To accomplish the latter, an analysis of the influence of two types 365 nm HP UV-LEDs degradation under two continuous real-system working mode conditions was done, by temperature Accelerated Life Tests (ALTs). These tests estimate the mean life under continuous working conditions of 6200 h and for cycled working conditions (30 s ON & 30 s OFF) of 66,000 h, over 7 years of 24/7 operating life of hydrocarbon pollution monitoring. In addition, the durability in the face of the internal and external parameter system variations is evaluated. © 2016 by the authors; licensee MDPI, Basel, Switzerland.
International
Si
JCR
Si
Title
Sensors
ISBN
1424-8220
Impact factor JCR
2,033
Impact info
Volume
16
10.3390/s16030293
Journal number
3
From page
1
To page
16
Month
SIN MES
Ranking
Participants
  • Autor: Francisco Jose Arques Orobon (UPM)
  • Autor: Neftali Nuñez Mendoza (UPM)
  • Autor: Manuel Vazquez Lopez (UPM)
  • Autor: Vicente Gonzalez Posadas (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Teoría de la Señal y Comunicaciones (Provisional)
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)