How does Door Frame Metal Detector Work? DFMD Types Explained
Those who visited airports, train stations, government offices, shopping malls, theatres, and events would have passed through this security equipment to prove they were not carrying any metal objects. This security device is known as a " Door Frame Metal Detector ." This security technology enables security officers to inspect individuals entering a building for metal or potentially dangerous objects. Metal Detectors, like baggage scanners and CCTV cameras, are safe and effective. Metal detectors for door frames employ pulse induction technology. This Pulse Induction method transmits short, strong current pulses across the wire coil. The impulse produces a brief magnetic field. When a particle of metal passes through this magnetic field, a reflected magnetic field will emerge, and this reflected magnetic field will interact with the reception coil, causing the door frame metal detector to sound an alert. This operation will take a few microseconds to complete. This curren...