Definition of 5G connector assembly testing machine

    Definition of 5G connector assembly testing machine

    There are many types of metal detectors. The earlier application dates back to the Second World War. They were commonly called "mine detectors" at that time. They used the difference in physical properties such as the permittivity of landmines and the surrounding soil to cause radiation from mine detectors. The microwave electromagnetic field is distorted, and the position of the landmine is judged by detecting the distorted field signal.

Overview Today, this type of equipment plays a role in various fields, such as airport security gates and hand-held metal detection devices.

    The metal detector used in industry is a precision detection device used to exclude metal [1] contamination by foreign matter.

    The metal detector is used to detect metal foreign bodies mixed in the production process of food, medicine, cosmetics, textiles, etc. Its principle is a central transmitting coil and two equivalent receiving coils, these three coils are installed in a detection head. The oscillator emits a high-frequency magnetic field through the transmitting coil in the middle, which is connected to the two receiving coils, but the polarity is opposite. When the magnetic field is not interfered by the outside, the voltage output signals generated by them cancel each other out. Once metal impurities enter the magnetic field, this balance will be broken, and the induced voltages of the two receiving coils cannot be cancelled. The un-cancelled induced voltage is amplified by the control system, and the metal detector can detect the presence of metal and generate Alarm signal (metal impurities detected). The system can use the alarm signal to drive an automatic rejection device, etc., so as to exclude metal impurities from the production line.