The electronic nose identifies certain components of an odor and analyzes its chemical composition. It contains a chemical detection mechanism, including an array of electronic sensors and artificial intelligence tools for pattern recognition.
Such devices have been around for more than two decades, but they are usually expensive and cumbersome. Researchers are trying to make these devices less expensive, smaller and more sensitive.
Electronic nasal instruments are used by research institutions, manufacturing departments and quality control laboratories for a variety of purposes, such as detecting contamination, spoilage and adulteration. They are also used in medical diagnostics and the detection of gas leaks and contaminants to protect the environment