Engineering Seminar Topic on Artificial Olfactory System

The research paper Engineering Seminar Topic on Artificial Olfactory System speaks about E-nose- a breakthrough in Artificial Olfactory System. The paper suggests and explains the development of highly sensitive, selective, reliable, and compact sensing systems to detect toxic chemical and biological agents are of great importance to national security. This paper examines the best such naturally occurring sensing system, the smell or “olfaction,” as well as artificial sensing systems built to emulate the nose. Electronic/artificial noses are being developed as systems for the automated detection and classification of odors, vapors, and gases. An electronic nose is generally composed of a chemical sensing system (e.g., sensor array or spectrometer) and a pattern recognition system (e.g., artificial neural network). . The response of all sensors in the e-nose together constitutes a unique profile that gives the “fingerprint” of odor. Electronic noses are intelligent instruments that are able to classify and quantify different gas/odors.

Architecture of E-nose:

  • the sensors that collect and generate  Data
  • software that interpret the data

Electronic nose is the colloquial name for an instrument made up of chemical sensors combined with a pattern recognition system . The reversible adsorption of volatile organic compounds (VOCs) to the sensor surface leads to a change of physical properties (conductivity, resistance, and frequency) of the sensor, which is measured. Remind that the main task in odor recognition to create a model as similar to the human model as it is possible. From this point of view electronic/artificial noses (so called E-Noses) are being developed as a system for the automated detection and classification of odors, vapors, gases. E-Nose is represented as a combination of two components: sensing system and Pattern recognition system.


  • Prospects for Clinical Application of Electronic-Nose Technology to Early     Detection of Mycobacterium tuberculosis in Culture and Sputum
  • E-noses for medicine
  • E-noses for the food industry
  • E-noses for replacement of dog team

The Research paper identifies the following drawbacks

o   For different applications it requires special pattern reorganization system.

o   Computers are not as smart or flexible as dogs or humans or other biological creatures

“If we get a brand-new scent that we’ve never smelled before, we can learn what that means and recognize it the next time we encounter it”. Machines aren’t very good at being able to adjust to new conditions.

o   cameras can see outside the spectrum of the human eye and  microphones that can detect a vibration a mile away, but in terms of chemical sensing, we are far away from what biology can do


The paper effectively discussed electronic nose and applications of electronic nose in the environmental, medical and food industries. The major differences between electronic noses and standard analytical chemistry equipment have been explained analytically. It has been suggested that by increasing compactness of E-nose and utilizing modern technologies like nanotechnology, an E-nose can be efficiently used in many fields to present technologies.

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