Method and System for Detecting the presence of a device - vo Indicator in an area of Limited Research

摘要

Method and apparatus for Detecting the presence of an indicator device in an area of Limited Research. Includes detecting an indicator device (31) of a highly permeable material in which two Rolls (1, 2) emit a High Frequency Alternating Magnetic Field (F1, F2) and a Frequency difference and / or SUM (n.f1bm.F2) where N and M are integers, positive or negative, and is received by one or more coils (9). The Apparatus comprises: coils (1, 2) and a Power Supply Equipment (4, 8) associated to receive and emit Alternating Magnetic Fields and thereby detect an indicator device (31) of a highly permeable material. It has applications in the verification and testing of products in the market.