Virtual instrument for comfort factor measurement

This paper focuses on a description of the comfort by means of the temperature-humidity comfort index. In the attempt to describe this complex phenomena, those related to the human perception, for temperature and humidity estimation, we propose to use words of natural language. This linguistic description is not so accurate and also subjective than the numeric one obtained through usual sensors, but it is easily understood by human beings even if the concept is abstract due to it geographical context dependence. Finally, an aggregation of temperature and humidity measurements performed by a virtual symbolic sensor is presented for the qualification of the comfort index.