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Type and application of RF anti-theft system
Sep 07, 2017

① Radio (RF) RF system: One of the early applications of electronic anti-theft systems. It uses radio frequency as the system to transmit and receive the detection signal, the standard range of detection frequency is generally 7.2-8.2 MHz. The biggest advantage of radio RF system is that the system uses low cost, high anti-theft detection rate, good anti-interference, protection of the export wide; The radio frequency system has two kinds of soft and hard anti-theft labels, which can protect most of the goods in the shopping malls. Radio frequency system has two kinds of independent and channel installation methods, widely used to protect department stores, clothing, supermarkets and so on. ② (AM) System: (Acousto Magnetic) utilizes a tuning fork to cause resonance only in the same oscillation frequency, which can be alternately converted by mechanical energy and magnetic field. The characteristic of acoustic magnetic system is the high detection rate of anti-theft not subject to metal foil paper shielding, sound magnetic system has a soft, hard two kinds of labels, can protect the shopping malls most kinds of goods, but easy to be omitted, acoustic magnetic system including independent system, channel system and stealth system (construction more difficult, the use of high cost) different kinds. ③ Electromagnetic wave system: Electromagnetic wave system (electromagnetic systems) uses electromagnetic wave as the detection signal, it with the radio system almost at the same time, has more than 30 years of history. Its advantage is the label is the smallest, the label price is also cheap, can repeat degaussing, suitable for books and other specific products protection. The electromagnetic wave system has two kinds of vertical and channel type, and the outlet width is generally 0.8 meters. The application environment is many in the library, the bookstore, the video shop and so on. The detection rate of electromagnetic wave system is generally about 60%. The system is susceptible to false positives or not reported due to the influence of magnetic or metallic material.