Summary

Recommendation ITU-T H.862.4 defines the framework for information and communication technology (ICT) olfactory function test systems. The scope of this Recommendation is focused on the method of the olfactory function test generated by the perception of the user's condition, the mechanically controlled scents spray, the evaluation of the user's response, and the olfactory test procedures.

The olfactory function test can be carried out by considering human factors related to the human olfactory. It can be sprayed by mechanically controlling a certain amount of fragrance. It is also possible to present a fragrance at intervals optimized for olfactory fatigue. In addition, it is possible to prevent the fragrance from being perceived completely differently due to the residual fragrance by solving the problem of fragrance mixing between olfactory tests through cleaning.

The ICT olfactory function test system framework is largely composed of three stages. The first step is to judge the state of the user and determine whether it is possible to perform an olfactory test. The second step is to emit an appropriate fragrance and receive a response from the user according to the test procedure. The third step is to evaluate the user's olfactory ability by analysing the user's response to the test procedure.