Publication: Técnica de medida con auto-referencia para sensores ópticos de intensidad mediante procesado digital de señal e instrumentación virtual
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2012-07
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2012-07-18
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Abstract
Esta memoria presenta el proyecto fin de carrera titulado “ Técnica de medida con auto-referencia para sensores ópticos de intensidad mediante procesado digital de señal e instrumentación virtual" realizado en el departamento de Tecnología Electrónica de la Universidad Carlos III de Madrid bajo la supervisión del Prof. David Sánchez Montero. El proyecto se basa en la tesis fin de máster “Coarse WDM passive optical networking of self-referenced fiber-optic intensity sensors with reconfigurable characteristics” de David Sánchez Montero, cuya investigación se centra en el desarrollo de redes pasivas de sensores de intensidad óptica con auto-referencia para topologías de multiplexación WDM. La configuración electro-óptica para redes CWDM de sensores ópticos de intensidad basada en redes de Bragg y con modulación en radio frecuencia ha sido verificada usando un amplificador de Lock-in en recepción junto con líneas de retardo electrónicas implementadas mediante amplificadores operacionales, resistencias y condensadores comerciales de bajo coste [1]. El presente proyecto surge por la propuesta de mejora empleando técnicas de procesado digital e instrumentación virtual en la etapa de recepción para evitar el uso del amplificador de Lock-in y las etapas de retardo electrónicas en recepción. El principal objetivo de este trabajo es el diseño de aplicaciones que implementen las técnicas de medida con auto-referencia para poder realizar la interrogación remota de sensores ópticos de intensidad de una manera eficaz, flexible y sencilla. Un segundo objetivo importante es la verificación del funcionamiento del esquema electro-óptico para redes CWDM de sensores ópticos de intensidad basada en redes de Bragg con modulación en radio frecuencia junto con el módulo de instrumentación virtual para comprobar que las aplicaciones funcionan correctamente realizando las medidas a partir de las señales del entorno real. --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
This work presents the project “New Self-referenced measurement technique for optical intensity sensors using digital signal processing and virtual instrumentation” written within the framework of the Electronics Technology Dpt. from Carlos III University of Madrid and under the supervision of Prof. David Sánchez Montero. The work is based on David Sánchez Montero´s master thesis “Coarse WDM passive optical networking of self-referenced fiber-optic intensity sensors with reconfigurable characteristics” which investigation is focused on the development of self-referenced passive optical intensity sensors networks in combination with WDM multiplexing topologies. The proposed electro-optic configuration for optical intensity sensor networks with CWDM topology based on Fiber Bragg Grating with radiofrequency modulation has been tested using a Lock-in amplifier and electronic delay lines at the reception stage implemented by low cost commercial operational amplifier, resistances, and capacitors. This investigation came up from the proposal for improving the measurement technique by the deployment of digital signal processing techniques and using virtual instrumentation at the reception stage. The first goal of this project is to design software applications that implement the self- referenced measurement techniques for remote sensing interrogation in order to make them more flexible and simple. The second goal is to fully keep the equipment in working order, that is, to test the electro-optic configuration for optical intensity sensors with CWDM topology based on Fiber Bragg Grating with radiofrequency modulation in addition to the digitalization module and the virtual instrumentation.
This work presents the project “New Self-referenced measurement technique for optical intensity sensors using digital signal processing and virtual instrumentation” written within the framework of the Electronics Technology Dpt. from Carlos III University of Madrid and under the supervision of Prof. David Sánchez Montero. The work is based on David Sánchez Montero´s master thesis “Coarse WDM passive optical networking of self-referenced fiber-optic intensity sensors with reconfigurable characteristics” which investigation is focused on the development of self-referenced passive optical intensity sensors networks in combination with WDM multiplexing topologies. The proposed electro-optic configuration for optical intensity sensor networks with CWDM topology based on Fiber Bragg Grating with radiofrequency modulation has been tested using a Lock-in amplifier and electronic delay lines at the reception stage implemented by low cost commercial operational amplifier, resistances, and capacitors. This investigation came up from the proposal for improving the measurement technique by the deployment of digital signal processing techniques and using virtual instrumentation at the reception stage. The first goal of this project is to design software applications that implement the self- referenced measurement techniques for remote sensing interrogation in order to make them more flexible and simple. The second goal is to fully keep the equipment in working order, that is, to test the electro-optic configuration for optical intensity sensors with CWDM topology based on Fiber Bragg Grating with radiofrequency modulation in addition to the digitalization module and the virtual instrumentation.
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Keywords
Proceso de señales, Fibra óptica, Sensores ópticos de intensidad, Parámetros de auto-referencia, Instrumentación virtual