Application of the retail business systems more and more common. It is an open-shelf sales for the retail business when the goods to reduce theft, increase sales and profits and thus the electronic anti-theft products. When the counter without a license when the goods leave the designated area, EAS system alerts and alarms to alert staff-related processing.
EAS system consists of detector, decoder and tag three parts. RFID tags are divided into soft and hard tag, soft label lower cost, direct adhesion in the more "hard" goods, the soft label can not be reused; hard tag soft label one-time costs high, but can be reused. Hard tag to get nailed with a special device, and more for clothing, soft, penetrating items. Non-contact multi-decoder device, decoding certain height, when the cashier when the cashier or bagging, electronic tags can be decoded without access to degaussing region. There will decoders bar code scanners and laser synthesis equipment together, so that once finished goods receiving and decoding to facilitate the work of cashiers, this way and laser bar code supplier must be matched by the mutual exclusion between the two interference, improve the decoding sensitivity. Detector usually shopping channel entrance or cash register office test system installed. Upon receipt of a customer for the purchase of a product to meet the correct amount, the cashier can on the labels affixed to goods for neutral, but legally authorized to leave the goods in a designated area. The goods taken away from the mall without decoding, after detector devices (mostly doors like), it will trigger the alarm, thereby alerting cashier staff, customers and mall security guards timely manner.
EAS technology classification EAS system is a single-bit radio frequency identification system, only two states, therefore only able to report the existence of goods, while the ability to report what the goods are goods. EAS systems currently used in four main technology, namely, radio frequency, electromagnetic, acoustic and magnetic, radio frequency identification. EAS systems of different technologies in product prices, read range and reliability of recognition has a great difference. Magnetic and RF products are cheap, and its label is usually affixed to a permanent packaging of goods or merchandise; the microwave magnetic sound more expensive price tag, and when the goods bought out by staff from the tag via a dedicated tool Goods taken down for re-use.
Radio frequency (RadioFrequency, RF) system uses radio waves for transmitting and receiving signals, the test frequency range of about 6 to 8 MHz. Radio System was a system very low cost, easy installation. However, because of its anti-theft tag for the loop coil, so the system vulnerable to the interference of some items, such as cash registers and other electronic products, metal, etc., easily lead to false positive or non-reporting system.
Electromagnetic systems (ElectromagneticSystem, ES) as the detection signal using electromagnetic waves. Electromagnetic system labels small, cheap price tag, can repeat the degaussing, but vulnerable to the impact of magnetic or metallic material resulting from false positives. Although radio frequency systems produce about the same time, price and technical reasons, but the decision on its acceptance in the market is not high.
Acoustic magnetic (AcousticMagnetic, AM) system use the same tuning fork oscillation frequency only in the circumstances of this resonance physical principles of operation to achieve almost zero false positives, fixed the sound in the magnetic system of goods into the system label detection area, will have resonance, but only the receiver receives four consecutive resonance signal (per 1 / 50 seconds time), the only alarm.
Precisely, RFID (RadioFrequencyIdentification, radio frequency identification) technology is used to describe the sensor can be any radio frequency device, a term usually refers to the use of radio frequency to read a little device I am an expert from Frbiz Site, usually analyzes all kind of industries situation, such as titanic music box , wooden box manufacturer.
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