Multi-pressure sampling for improving the performance of electronic noses using gas adsorbing sensing elements

A gas sensor array system, comprising:

• a gas sensing chamber;
• a sensor array provided within the gas sensing chamber, the sensor array including a plurality of gas sensing components, wherein each gas sensing component of the plurality of gas sensing components comprises a gas adsorbing material, and wherein the gas adsorbing material is different for each of the plurality of gas sensing components;
• a gas source for supplying a gas sample;
• a gas pressure regulator coupled to the gas source and the gas sensing chamber, the gas pressure regulator being structured and configured for selectively adjusting a pressure of the gas mixture suppled to the gas sensing chamber;
• and
• a controller structured and configured to (i) control the gas pressure regulator to selectively adjust the pressure of the gas sample provided to the gas sensing chamber to a number of pressure levels, and (ii) while the gas sample is provided at each pressure level, make a gas parameter measurement on the gas sample using outputs of one or more of the gas sensing components.