How did underground metal detectors come about? Let me explain to you in detail below.
Underground metal detectors are actually a type of metal detectors, but they have better underground detection capabilities than metal detectors. During the industrial era, metal detectors were invented for the mining of minerals.
Under the relatively backward scientific and technological conditions at that time, metal detectors could not accurately detect metals, because the underground soil was relatively thick, and there were many minerals, rock minerals, etc. in the soil layer itself, and these substances also have The ability to block electromagnetic fields, so sometimes it may not be the metal we need to look for, but metal detectors will also respond. According to the results of the metal detector to mine or find metals, sometimes the expected effects and benefits cannot be obtained.
However, the emergence of underground metal detectors has solved this problem very well. There is a detector inside this instrument, and there are three sets of coils in the detector, with different division of labor, and they can complete the work well after they are combined. One set of coils is responsible for sending signals and two sets of coils are responsible for receiving signals. These three sets of coils play an extremely important role inside the detector.
The electromagnetic wave of a certain frequency is emitted by the coil that transmits the signal, enters the receiving coil, and forms an induced magnetic field. When the underground metal detector is started, the electromagnetic field starts to work, and when metal is detected, the metal appears in the electromagnetic field, which will cut off the induction line, and the electromagnetic field cannot form a loop, which will cause the detector to issue an alarm, then it means that the underground is likely to exist. metal.
It can be said that underground metal detectors are more suitable for underground exploration than metal detectors, and have a wide exploration range, which can go deep into the ground, and their ability to detect metals is far superior to ordinary metal detectors. Therefore, whether it is for mineral mining or archaeological exploration, the use of underground metal detectors is undoubtedly the best choice.
