DISPOSITIF PERMETTANT DE DETECTER DANS LES SOLIDES, DES LIQUIDES OU DES GAZ LES PARTICULES METALLIQUES INCLUSES, DE LES LOCALISER ET D'EN DETERMINER LA TAILLE

摘要

It comprises an induction coil (1) radiating an alternating magnetic field and a sensor (3) associated to an amplifier (10) and a synchroneous demodulator (12) controlled by a signal proportional to the current passing through the induction coil. The device may be used for detecting metal bodies in timbers, food products, luggage and on persons attending public places and transports.