Washington University Department of Electrical Engineering

We wanted to see whether odor concentration affected the sensitivity of the sensors.  The plots below show that there is little difference in the average voltage for each nut put out by the sensors for different odor concentrations.

 

 

 

 

 

 

 

 

 

 

 

 

Thus we can conclude that with our given experimental setup, the sensors are not sensitive to different concentrations of the same odor, but they do a sufficient job of distinguishing different types of odors.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Characterizing Odors Using Electronic

Nose Sensors

Results: Nut Concentration