Alarm system for anti-theft magnetic snap

Abstract

The invention discloses an alarm system for an anti-theft magnetic snap. The alarm system for the anti-theft magnetic snap has a double anti-theft function and is capable of realizing active warning.The alarm system for the anti-theft magnetic snap comprises an active alarm device and an unlocking device for releasing the active alarm device. According to the magnetic induction alarm anti-theft magnetic snap device, an identity identification function is further realized on the basis of an original anti-theft magnetic snap, so that the double anti-theft function can be realized; even if the original anti-theft magnetic snap fails to give out an alarm caused by a condition that security door electromagnetic signals are shielded, the active alarm device arranged on a magnetic snap seat canstill realize an alarm function; and since an ordinary metal cavity cannot shield a magnetic field, if a suspect is detected, a user can hold a strong magnet to realize non-destructive detection around the suspect without invading the privacy of the suspect. The alarm system is suitable for being popularized and applied in the anti-theft technology field.

Description

technical field [0001] The invention relates to the field of anti-theft technology, in particular to an alarm system for an anti-theft magnetic buckle. Background technique [0002] At present, the anti-theft magnetic buckles used in shopping malls mainly include nail buckles and buckle seats. Magnetic buckle devices and anti-theft electronic tags are arranged on the buckle seats. There are nails, the middle part of the nail is provided with a plurality of semicircular grooves, the magnetic buckle device includes a columnar cavity arranged in the buckle seat, and a compression spring, an iron ring and a plurality of steel balls are arranged in the cavity , the number of the steel balls is the same as the number of the semicircular grooves, the bottom of the buckle seat is provided with a nail hole communicating with the columnar cavity, the central axis of the nail hole coincides with the central axis of the columnar cavity, The inner diameter of the nail hole is smaller th...

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, which also 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 Xibo paper can effectively shield it, and the anti-theft magnetic buckle itself It is also a passive structure, unable to realize active detection and alarm

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