Device and Method for Identifying and Quantifying Layered Substances

摘要

An apparatus for identifying and measuring in real time substances overlying a surface comprises a plurality of electrodes, a temperature senso r, an electrode control system connected to the plurality of electrodes for defini ng an electric field, an amplitude and phase measurement system connected to the plurality of electrodes and to the electrode control system for measuring a plurality of currents responsive to the electric field and converting the currents to a measuremen t set and computer for storing a map comprising a partition of a vector space of predetermined characteristics of substances into regions of profiles corresponding to the substances which could be overlying the surface. The computer correlates the measuremen t set with the map thereby identifying and quantifying the substances overlying th e surface and generates an output signal corresponding to the identity and quantity of substances overlying the surface. A display responsive to the output signal displays th e identity and quantity of substances overlying the surface.