Real-time intelligent anti-theft magnetic snap system based on low-power Bluetooth

Abstract

The invention discloses a real-time intelligent anti-theft magnetic snap system based on the low-power Bluetooth. A signal source, a decoder, an anti-theft magnetic snap, a detector and an early warning device, which communicate with each other through a Bluetooth signal, are arranged on the system. The signal covers a setting range of the anti-theft magnetic snap with an encryption signal through a periodical broadcasting signal. If the anti-theft magnetic snap in the range monitors the broadcasting signal and verifies that the broadcasting signal is correct through an encryption algorithm, the next monitoring period will be entered. The decoder achieves recognition of validity of disassembly of the anti-theft magnetic snap by sending an encrypted decoding signal to the anti-theft magnetic snap in the broadcasting signal coverage range. The function expression of the encryption algorithm is y=f(x1, x2, x3), wherein the x1, the x2 and the x3 correspond to three vectors: a user name, a user password and an MAC address and the dependent variable y corresponds to the broadcasting vector. By use of the five terminals: the signal source, the anti-theft magnetic snap, the decoder, the detector and the early warning device, interconnection and intercommunication are achieved through the wireless Bluetooth communication technology, active anti-theft is achieved and objectives of anti-theft and hidden detection are achieved.

Description

technical field [0001] The invention relates to the fields of anti-theft technology and the like, specifically, a real-time intelligent anti-theft magnetic buckle system based on low-power bluetooth. Background technique [0002] The anti-theft magnetic buckle used in the existing shopping malls adopts a mechanical limit method to realize an automatic lock structure. The locking principle: when a nail is inserted from the bottom of the anti-theft magnetic buckle, the steel ball in the buckle will slide to the position of the groove on the nail , and the iron ring above the steel ball is firmly stuck in the groove under the pressure of the top spring to realize the locking function. The unlocking principle of the existing anti-theft magnetic buckle: When a strong magnet is applied to the top of the anti-theft magnetic buckle, the iron ring and the steel ball are attracted by the strong magnetism, the compression spring moves up, the nail loses the resistance of the steel ball...

AI Technical Summary

Problems solved by technology

However, due to the unlocking principle of the anti-theft magnetic buckle, any strong magnet can realize the indiscriminate opening of the magnetic buckle, and the strong magnet is easy to obtain, which makes the product often removed before it is taken to the anti-theft door. Let the anti-theft door lose the detection channel; secondly, because the detection signal of most anti-theft doors is high-frequency electromagnetic wave (7.4-8.8MHz), closed metal cavity such as tin foil can effectively shield it, and the anti-theft magnetic buckle itself It is also a passive structure. If the product and the magnetic buckle on the product are put into the metal cavity together, the anti-theft door will lose the anti-theft function immediately, and the magnetic buckle cannot realize active detection and alarm.

Furthermore, the passive structure of the anti-theft magnetic buckle and the difference in sensitivity of the anti-theft door lead to false alarms on the anti-theft door: the magnetic buckle and the goods are taken out of the mall, but the anti-theft door does not alarm

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