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Revealing the Secrets of Commonly Used Electronic Security Systems

Revealing the Secrets of Commonly Used Electronic Security Systems

Jun 8,2023

Electronic anti-theft system refers to the general term for RF, AM, and EM anti-theft systems, which are commonly used in places such as libraries and supermarkets. Their principles and usage methods are different, but they all use the principle of electromagnetic induction for anti-theft, used to detect goods with anti-theft labels, and protect the integrity and safety of electronic anti-theft systems.

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Traditional anti-theft mode


RF anti-theft system: RF anti-theft system is an electromagnetic wave anti-theft system that uses RF signals for detection. The working frequency of RF anti-theft system is generally around 8.2MHz. The advantages of RF anti-theft system are long detection distance and good anti-theft effect, but its disadvantage is that it is easily shielded by metal.


 

AM anti-theft system: The AM anti-theft system, also known as the magnetic anti-theft system, is an electronic anti-theft system that uses the principle of magnetic field induction for anti-theft. The operating frequency of the AM anti-theft system is generally around 58kHz. The advantage of AM anti-theft system is that it has good metal shielding performance, but its disadvantage is that the detection distance is relatively short.

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EM anti-theft system: EM anti-theft system, also known as electronic anti-theft system, is an electronic anti-theft system that uses the principle of electromagnetic induction for anti-theft. The operating frequency of the EM anti-theft system is generally around 1.95MHz. The advantage of the EM anti-theft system is that it has good anti-theft effects on both metal and non-metal items, but its disadvantage is that the detection distance is relatively short. Overall, RF anti-theft systems are suitable for large shopping malls, supermarkets, and other places, and are suitable for preventing the theft of bulk commodities; The AM anti-theft system is suitable for small shops, bookstores, and other places, and is suitable for preventing the theft of small goods; The EM anti-theft system is suitable for the anti-theft protection of high-end goods such as cultural relics, artworks, and jewelry.

 


The mainstream anti-theft mode of smart libraries


 

RFID (Radio Frequency Identification) anti-theft system is a technology that utilizes radio frequency technology to achieve book anti-theft. Its working principle is to install RFID tags on books. When a book leaves the library without going through borrowing and returning procedures, the RFID reader will automatically detect and issue an alarm to remind the administrator to handle it.

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The advantages of RFID anti-theft systems mainly include: high efficiency: RFID anti-theft systems can quickly detect books that have not been borrowed or returned, greatly improving the management efficiency of libraries. Automation: The RFID anti-theft system can achieve automated book borrowing and returning operations, greatly reducing the workload of administrators. Good anti-theft effect: RFID anti-theft system can effectively prevent book loss and theft, saving a lot of funds and labor costs for the library.

 

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