The working principle of metal detectors!
How it works: a metal detector uses electromagnetic induction to produce a rapidly changing magnetic field using coils passing through alternating current. The magnetic field can induce eddy currents in metal objects. Eddy currents also produce a magnetic field, which, in turn, affects the original magnetic field, causing the detector to emit a song.
In addition to the basic detection and alarm function, the metal detectors in general provide many special functions which are carefully developed by various manufacturers, such as:The function of surface balance: to make sure that the machine is correct to detect metal instead of interfering with it.Selection function: using different metal objects to respond to the magnetic field differences, to select or exclude different kinds of metal objects, and alarm prompt.Depth marking allows you to tell the possible depth of the detected metal object.Area markings: the size of metal objects that can be detected can be displayed by the operator to determine whether the excavation meets the requirements of the excavation.Voice prompt: you can immediately remind the operator by voice, such as lighting lighting - providing lights for night operations.
Metal detector (metal detector) is a high performance metal detector designed for security. There are three main categories: electromagnetic induction, X ray inspection, microwave detection, electronic instruments for detecting metals, and can be used in many fields.
