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May 2011 Archives

¿Qué es una nariz electrónica?

Una "nariz electrónica" (NE) es un instrumento que puede oler, es decir, es capaz de realizar análisis cualitativos y/o cuantitativos de una mezcla de gases, vapores y olores. La NE es un instrumento de olfato artificial que permite distinguir y reconocer aromas utilizando sensores de gas. Un dispositivo de este tipo tiene al menos 4 partes con diferentes funciones: la primera realiza la adecuación de la mezcla gaseosa y el muestreo, el conjunto de sensores de gas hace la detección, la electrónica de control se dedica a la gestión del conjunto de sensores y adecuación de la señal, y finalmente, la computadora, con adecuados algoritmos de clasificación de patrones, extrae los rasgos característicos o "huellas" de cada aroma y presenta los resultados en la interfaz con el usuario.

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