Monitoreo de concentración de monóxido de carbono usando tecnología Long-Range

Carbon Monoxide Concentration Monitoring Using Long-Rang Technology

José Ignacio Vega-Luna, Mario Alberto Lagos-Acosta, Gerardo Salgado-Guzmán

Resumen


Se presenta un sistema de monitoreo remoto de sensores de monóxido de carbono (CO) en un hospital usando transceptores Long-Range. Un gas altamente tóxico que no puede ser detectado por el ser humano y que causa daños en la salud es el CO. Existen zonas de hospitales donde la pureza del aire es mayor a 90 % y es monitoreada continuamente. El objetivo de este trabajo fue diseñar un sistema inalámbrico que reporte a un servidor ubicado en la Internet los niveles de concentración de CO de diez sensores dispuestos en áreas de un hospital. Se implantó una red de área amplia de bajo consumo de energía, o LPWAN por sus siglas en inglés, utilizando diez transceptores de tecnología Long-Range y un gateway. Cada nodo de la LPWAN consta de un sensor de CO, un módulo de sistema de posicionamiento global, un display de cristal líquido de cuarzo, un generador de alerta, un microcontrolador y un transceptor Long-Range. Los nodos transmiten los niveles de CO al gateway y este los envía al servidor. Al detectarse un nivel de CO mayor a un valor de umbral se activa una alerta. El sistema detecta concentraciones de CO de 10 a 1000 ppm. El nodo de la red más lejano se encuentra a 1200 metros del gateway y el alcance logrado fue 11,8 kilómetros.

Palabras clave


hospital, Long-Range, LPWAN, monóxido de carbono sensor, transceptor.

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Referencias


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DOI: http://dx.doi.org/10.17163/ings.n18.2017.09

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