Composition and function of the EAS system
Abstract：The EAS system consists of a detector, electronic tag, decoder/lock picker/nail remover/separator/unlock. 1. A detector generally consists of two parts: a transmitter and a receiver. Its basic principle is to use a transmitting antenna to send out a scanning tape
The EAS system consists of a detector, electronic tag, decoder/lock picker/nail remover/separator/unlock. 1. A detector generally consists of two parts: a transmitter and a receiver. Its basic principle is to use a transmitting antenna to send out a scanning band, forming a scanning area between the transmitting and receiving antennas. Within the receiving range, the receiving antenna restores this frequency band, then uses the resonance principle of electromagnetic waves to search for valid tags within a specific range. When a valid tag appears in that area, an alarm is triggered. 2. The internal structure of electronic tags is an LC oscillation circuit, installed on the product in a special way. Only a dedicated decoder or lock picker can remove it. Currently, electronic labels available on the market include soft labels, hard labels, bottle protectors, milk powder anti-theft labels, CD/tape protective cases, and more. 3. The decoder is the device that prevents soft label failures. Currently, the commonly used type on the market is the contactless decoder, which can be decoded simply by passing the label within 20cm above the decoder. The decoder can be used with POS laser checkout platforms. Lock pickers, nail pickers, separators, and unlockers are devices that quickly, conveniently, and simply remove various hard tags
