Conception and experimentation of innovative minerals and metals detector by exploiting of electromagnetic waves emitted and received by helical antenna

Abstract

This paper discusses the simulation and experimentation of innovative minerals and metals detector to improve the performances of old systems. Indeed, actual detectors are limited concerning depth, sensitivity and selectivity. We propose here to implant helical antenna on shell points of two coils to boost detection process by increasing directivity gain and reflexion coefficient. The system uses the principle of electromagnetic induction and beat frequency oscillator (BFO) and contains search coil to detect metals and minerals at appropriate range and gives an auditory and vibratory indication once the element is detected. The search coil forms part of an LC oscillation circuit linked to added helical antenna. The activation frequency of the LC oscillator is primarily determined by the value of involved inductor and capacitor to recover the large gamme of frequencies and detect more kind of materials.