Anti-theft door lock

Abstract

The invention discloses an anti-theft system comprising an infrared photoelectric detection circuit which is used for measuring whether a correct key is inserted into a door lock or not and plugging and pulling-out times and transmitting a detection signal to a single chip microcomputer. A control circuit of the single chip microcomputer processes collected information and transmits corresponding control command to an alarm module. The alarm module comprises two functions of voice alarm and buzzer alarm. When an unlocking person inserts an incorrect key into a lockhole, the control circuit of the single chip microcomputer plays voice alarm information after collecting the information; and if wrong unlocking operation continues to be executed, a buzzer alarm signal is transmitted. In the invention, signal receiving is realized by an infrared photoelectric switch, the anti-jamming capability is strong, the alarm part is more humanized, the whole design structure is simple, the practicability is strong, and the invention is close to life and provides reference for the intelligent development of the house.

Description

technical field [0001] The invention relates to an anti-theft door lock. In particular, it relates to an anti-theft door lock with low cost, intelligence, strong anti-interference ability, more humanized alarm part, simple structure, strong practicability and close to life. Background technique [0002] According to statistics, from 2001 to 2003, there were 1,769 theft cases in Hedong District, Tianjin, mainly for family burglary. According to the investigation, the thief opens the common tumbler door lock method very simple, mainly contains two kinds: unblanking method one: bump key method, unblanking method two: needle shape unlocker and torsion wrench. In order to prevent this abnormal opening method, engineers have made a lot of efforts, but the current anti-theft door locks, for ordinary consumers, either the anti-theft performance is still not ideal, or the system is complicated and the cost is too high. [0003] For the existing anti-theft door locks on the market, ...

AI Technical Summary

Problems solved by technology

In order to prevent this abnormal opening method, engineers have made a lot of efforts, but the current anti-theft door locks, for ordinary consumers, either the anti-theft performance is still not ideal, or the system is complicated and the cost is too high

[0003] For the existing anti-theft door locks on the market, its performance is relatively single, and it is impossible to distinguish whether the misoperation of the lock is conscious or unconscious

That is to say, the existing anti-theft locks lack a humane and intelligent detection method.

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