| abstract |
A method for determining the location of an interface of interest (18, 20) in a target domain (13), between a free volume (14) of a flowable material and a solid material (11, 17) limiting said free volume, the method comprising the steps of providing a mathematical model (21) of the target domain (13) 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 (21) 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 (18, 20) on the basis of the adjusted mathematical model. According to the present in invention, the step of adjusting the mathematical model comprises varying the location of the boundary surface (18) in order to take into account, in determining the location of the interface of interest (18, 20), possible wear of the boundary surface. |