METHOD AND APPARATUS FOR DETERMINING THE LOCATION OF AN INTERFACE OF INTEREST, AND COMPUTER PROGRAM

摘要

A method for determining the location of an interface of interest in a target domain, between a free volume of a flowable material and a solid material limiting said free volume, the method involves the steps of providing a mathematical model of the target domain determining, for a plurality of pairs of electrode groups, a characteristic electrical quantity proportional to the capacitance of a capacitor formed by a pair of electrode groups; receiving measurements of the characteristic electrical quantity for a plurality of pairs of electrode groups; adjusting the mathematical model by varying the location of the boundary surface in order to take into account possible wear of the boundary surface so as to reduce the differences between the measured characteristic electrical quantities and those defined by the mathematical model; and determining the location of the interface of interest on the basis of the adjusted mathematical model.

主权项

1. A method for determining the location of an interface of interest in a target domain, between a free volume of a flowable material and a solid material limiting said free volume, the method comprising the steps of:
providing a mathematical model of the target domain determining, for a plurality of pairs of electrode groups, the electrodes of the electrode groups being arranged in capacitance measurement connection with the target domain and supported by a solid support body having a boundary surface in the target domain, a characteristic electrical quantity proportional to the capacitance of a capacitor formed by a pair of electrode groups; receiving measurements of the characteristic electrical quantity for a plurality of pairs of electrode groups; adjusting the mathematical model so as to reduce the differences between the measured characteristic electrical quantity values and those determined by the mathematical model; and determining the location of the interface of interest on the basis of the adjusted mathematical model; wherein the step of adjusting the mathematical model comprises varying the location of the boundary surface in order to take into account, in determining the location of the interface of interest, possible wear of the boundary surface.