Burglar alarm based on human body infrared induction module

Abstract

The invention provides a burglar alarm based on a human body infrared induction module whose circuit adopts a 12V battery (GB) to provide power. The cathode of the battery (GB) is grounded and the anode is in serial connection with the switch (S) and then provides 12V power supply to the following circuits. The following circuits comprise a human body infrared induction circuit and a sound-light warning circuit. The infrared induction module HC-SR501 of the human body infrared induction circuit is capable of monitoring the infrared pyroelectric signals within 5 meters of a human body. When a thief comes close to the monitoring area of a balcony, the alarm can actively generate a sound-light alarm and deter the thief in advance so that the thief dare not to conduct stealth easily and that the household property safety can be further protected. Since the burglar alarm of the invention has the active alarm function, it can achieve a better performance and is very worth being widely promoted into the market.

Description

technical field [0001] The invention relates to an alarm, in particular to an anti-theft alarm based on a human body infrared induction module, and belongs to the field of electronic technology. Background technique [0002] In various residential quarters in the city, in order to prevent thieves from burgling from the balcony when the owner is not at home, many families have installed anti-theft nets on the balcony. Beautiful, many residential areas prohibit the installation of anti-theft nets on balconies facing the central garden side. If the open balcony does not have the protection of the anti-theft net, the anti-theft problem is always difficult to worry about, so many families install anti-theft alarms on the open balcony. There are many types of anti-theft alarms on the market, but usually they can only detect the intrusion of thieves and then call the police. They cannot actively warn when the thieves approach. Choose desperate, continue to steal quickly and then ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-theft alarm based on a human body infrared sensing module to solve the problem that the existing anti-theft alarm cannot actively warn when a thief approaches

Images