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Trabajos Finales de Graduación

URI permanente para esta colecciónhttp://10.0.96.45:4000/handle/11056/14815

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Examinando Trabajos Finales de Graduación por Autor "Alfaro Ureña, Eduardo"

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  • Miniatura
    Ítem
    Diseño de una alternativa para la calibración de aplicaciones móviles que miden nivel de presión sonora
    (Universidad Nacional, Costa Rica, 2019) Alfaro Ureña, Eduardo; Montero Sánchez, Ernesto; Vetrani Chavarría, Karla
    The objective of this graduation project was to propose a metrological management model for mobile applications used to measure environmental or occupational noise. for mobile applications used in the measurement of environmental or occupational noise, specifically in the determination of sound pressure levels specifically in the determination of sound pressure levels, thus ensuring the traceability of the results. the traceability of the results. This is important because it allows to have a of the results obtained through measurement procedures that are documented, which generates a documented, which generates a backup. Thus, the scope of the project applies as follows proposal for the implementation of the calibration service by Procame's Metrology Laboratory, which is Metrology Laboratory of Procame, in the second half of 2018, contemplating the current measurement management system of this organization. management system of this organization. For this purpose, a prototype of an acoustic chamber was developed, under the diagnosis of aspects such as applicable applicable documentation, materials for its construction, volumetric figure, dimensions, acoustic foam, electronic control, acoustic confinement calculation and dimensions, acoustic foam, electronic control, acoustic confinement calculation and final design. final design. A diagnosis of the characterization process of the acoustic chamber and the calibration of the acoustic measurement was also carried out. and calibration of the sound pressure measurement of the mobile applications, contemplating the measurement the measurement equipment, the influence magnitudes, the validation of the method, the measurement function for the calculation of the indication error, and the the measurement function for the calculation of indication error and measurement uncertainty, and the conformity gap of the proposed metrological model. conformity of the proposed metrological model with the INTE/ISO 10012 standard. Based on what was established, we were able to develop and validate the documentation required for the gap closure with the INTE/ISO 10012 standard, the acoustic camera prototype and the the gap closure with the INTE/ISO 10012 standard, the acoustic chamber prototype and its characterization the acoustic chamber prototype and the procedure for its characterization, and the calibration procedure for mobile applications for sound pressure level calibration procedure for mobile applications for sound pressure level measurement. With the technical and financial analysis carried out, it was concluded that the solution embodied in this project is feasible to be implemented. This project is feasible to be implemented in Procame's Metrology Laboratory, constatando que este organismo contará con un servicio de calibración de presión sonora de dispositivos móviles con características de precisión y exactitud adecuadas y controlables, y bajo un modelo de gestión metrológica que puede incorporarse en su sistema de gestión.