Improving the discrimination of an impulse technique metal detector by correlating responses inside and outside of a cut-off peak area

摘要

The invention relates to a method for detecting metal objects, particularly to improving discrimination in a metal detector, where at least two responses are defined for metal objects passing through the metal detector. According to the invention, the correlation of the responses is examined within a determined time period in the metal detector, and at least one parameter is formed of these responses in order to define the group of objects that caused the response.