Clasificación de compuestos volátiles a través de técnicas de modulación de temperatura en sensores de gases químicos.

Abstract

The present project consist in the design and implementation of a conditioning circuit

to improve the electronic nose performance, which was applied in the heating

resistor (i.e, Heater), through different methods of temperature modulation, in order

to study the sensors response and determine whether they are able to make a

classification when these are exposed to volatile compounds.

The study was based on determining the efficiency of the gas sensors, analyzing the

sensitivity, selectivity and repeatability of the measuring system and selecting the

type of modulation (e.g. Pulse Width Modulation) for the analyte detection.