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Various fibre-optic sensors are developed for use in industrial applications

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Posted March 27, 2013

In his PhD thesis read at the Public University of Navarre,Yoany Rodríguez-García, a Telecommunications and Electronics Engineer of Pinar del Río University (Cuba), has developed sensor devices based on fibre optics. Specifically, the sensors measure physical and chemical parameters used in industrial applications. The thesis is entitled “Contribución al desarrollo de sensoresutilizandofibraóptica y nanoestructuras” (Contribution to the development of sensors using fibre optics and nanostructures).Its results have been published in several scientific journals, like the International Journal of Circuit Theory and Applications.

In the first part of his thesis he studied the measurement of vibrations, which arevery important in the predictive maintenance of all kinds of rotatory machines, in particular large electric motors. Various sensors were designed, simulated, manufactured and characterised for industrial use.”As the aim was to obtain sensors for industrial use,” he points out, “modifications were incorporated during the optimization process to improve the sensitivity of the vibration sensors proposed.” He also proposed fibre-optic sensors to measure chemical parameters, in particular, humidity and pH.For this purpose, he used sensors treated with films of a nanometric thickness which are sensitive to changes in relative humidity and pH.

Read more at: Phys.org

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