1. Acousto-magnetic system composition The acoustic-magnetic anti-theft system consists of three parts: One is the detector. Including transmitter and receiver two parts. The basic principle is to use the transmitting antenna to emit an alternating magnetic field to form an induction zone between the transmitting antenna and the receiving antenna.
2. The principle of acousto-magnetic identification The acousto-magnetic anti-theft system is a single-bit radio frequency identification system, and the modulation method adopted is the digital modulation method of amplitude keying (ASK).