Washington University Department of Electrical Engineering

Characterizing Odors Using Electronic

Nose Sensors

Conclusion

The experiments show that the sensors are able to distinguish different nut odors, but cannot distinguish between varying concentrations of the same odor. In the future, we want to be able to control the sensors’ circuitry such that they can distinguish different concentrations of the same odor.

Developing the classification algorithms and realizing that k-nearest neighbor is better for this type of data will help us in future applications where decisions based on odor-type must be made.