The conception of gas chamber for electronic nose

Abstract

The gas measurement systems have a particular methodology, referred to as “Electronic Nose”, based on gas sensors as odor detectors. The current electronic nose (e-nose) chamber has design flaws, such as a big volume, an unwieldy construction, and so on. In this study, we aim to develop a gas chamber able to establish the good conditions of measurement by the sensor array, with consideration of the optimal shape of the gas flow and the positioning of the detectors, to acquire the measurements in a good state. The sensing chamber was designed using FreeCAD and simulated in ParaVIEW to characterize and determine the design capable to provide the optimum performance. Results show that the spherical shaped sensing chamber with a tangential arc connection from both pipes displayed the best performance in terms of the elimination of turbulence.