Interferometric system controlled by virtual instrumentation for differential thermal analysis

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2011

Autores

Goncalves, LC (Autor) Outra; Gonzalez Aguilar, G (Autor) Outra; Baptista, JM (Autor) Outra; Jorge, PAS (Autor) FCUP

Ata de Conferência Internacional

Título: 21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS

21st International Conference on Optical Fiber Sensors

Ottawa, CANADA, MAY 15-19, 2011

Indexação

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Outras Informações

ID Authenticus: P-002-XB7

DOI: 10.1117/12.886019

Abstract (EN): This work describes the implementation of an optical fiber interferometric system for differential thermal analysis. The system is based on a white light Mach-Zehnder configuration, with serrodyne phase modulation, to interrogate two identical fiber Bragg gratings (FBG) in a differential scheme. Operation and signal processing with low cost digital instrumentation developed in Labview environment enabled FBG temperature measurement with a +/- 0.012 degrees C resolution nearly matching the performance of standard hardware. Preliminary results were obtained, where mixed samples of acetone and methanol could be successfully identified, indicating the suitability of the system for high accuracy differential thermal analysis using low cost instrumentation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4