METHOD FOR DETECTING REFLECTED SIGNAL FROM TARGET IN INDUCTION RESONANCE METAL DETECTOR IN PRESENCE OF INFLUENCE OF DESTABILIZING FACTORS IN PROCESS OF SEARCHING AND DETECTING OF SAME, DEVICE IMPLEMENTING THE SAME Russian patent published in 2024 - IPC G01V3/12 

FIELD: metal detection.

SUBSTANCE: invention is related to the field of detecting conductive and ferrimagnetic objects using induction coils that create an alternating magnetic field. The invention is a method that consists of converting the voltage from the sensor coil into antiphase, comparing it with the voltage on the capacitor, the resulting voltage is converted into a constant resulting voltage, and the deviation of the resulting direct voltage in the process of searching for a target is more than the value of the voltage the minimum possible threshold for detecting a signal reflected from the target will indicate detection of the target. The device implementing the method contains an alternating voltage generator, a serial oscillating LC circuit consisting of a sensor coil, a capacitor, two galvanically isolated power supplies, a passive adder containing three resistors, a buffer amplifier, optical isolation, an indication module and a correction module, except In addition, a transformer, a synchronous detector, a rectifier filter.

EFFECT: improve of reliability of detecting a reflected signal from a target in an induction resonant metal detector in presence of the influence of destabilizing factors.

7 cl, 2 dwg