CN205121771U

CN205121771U - Balcony burglar alarm

Info

Publication number: CN205121771U
Application number: CN201520837040.1U
Authority: CN
Inventors: 兰国莉
Original assignee: Guangxi Vocational and Technical College
Current assignee: Guangxi Vocational and Technical College
Priority date: 2015-10-27
Filing date: 2015-10-27
Publication date: 2016-03-30
Anticipated expiration: 2025-10-27

Abstract

The utility model provides a balcony burglar alarm, the device responds to module circuit, voltage comparator circuit and acousto -optic warning circuit including the human body, and wherein human response module circuit adopts human body infrared induction module HC -SR501, voltage comparator circuit adoption LM358 chip structure, the acousto -optic warning circuit adopts alarm, emitting diode and silicon controlled rectifier to found. This device is released the infrared heat of human body through human body response module circuit and is detected, and when having detected the human desires and get into from the balcony, human response module circuit can control voltage comparator circuit output high level, and then triggers the silicon controlled rectifier and switch on, makes warning circuit send reputation warning fright thief with continuouslying, also notifies owner to have the human desires to follow the balcony entering. Consequently, the balcony of this device has been installed, even under the condition of not installing the metal anti -theft net, also can play the effect of burglar alarm.

Description

A kind of theft-proof alarm for balcony

Technical field

The utility model relates to the burglar alarm that a kind of thief of preventing registers one's residence from balcony, belongs to application electric technology field.

Background technology

Nowadays the balcony of most residents house and window have all installed various types of anti-theft net, fundamental purpose is committed theft to prevent thief from entering indoor from window and balcony, although anti-theft net can effectively play antitheft effect, living balcony can affect the comfort level of resident family and the overall appearance degree of external wall of house after installing anti-theft net to a great extent.Therefore be necessary that the warning device designing a kind of automatic induction is to replace anti-theft net, when thief is near window balcony, warning device can automatically be responded to and constantly send acousto-optic warning, plays the effect of fright thief.And balcony is without the existence of anti-theft net, people can obtain the better visual field and the more comfortable life sensation loosened.

Utility model content

The purpose of this utility model is to provide the burglar alarm that a kind of thief of preventing registers one's residence from balcony, also can play theft-proof alarm function to realize balcony when not having metal anti-theft net.

The concrete technical scheme that the utility model is taked is as follows:

A kind of theft-proof alarm for balcony, it is characterized in that: this device comprises human body induction module circuit, voltage comparator circuit and sound light alarming circuit, wherein human body induction module circuit adopts human body infrared induction module HC-SR501, voltage comparator circuit adopts LM358 chip to build, and sound light alarming circuit adopts alarm, light emitting diode and controllable silicon to build.

1 pin of human body infrared induction module HC-SR501 connects+5V power supply through switch S 1, and 2 pin connect the 3 pin positive input terminals of LM358 chip U1,3 pin ground connection; The 2 pin negative input ends of the adjustment termination LM358 chip U1 of adjustable resistance RV1, two stiff end one end of adjustable resistance RV1 connect+5V power supply through switch S 1, other end ground connection; 8 pin of LM358 chip U1 connect+5V power supply through switch S 1,4 pin ground connection, access the control end of the controllable silicon U2 of warning circuit after 1 pin output terminal series resistor R2; The plus earth of controllable silicon U2, the negative pole of anode sending and receiving optical diode D1 and one end of alarm LS1, one end of the positive pole connecting resistance R1 of light emitting diode D1, the other end of resistance R1 and the other end of alarm LS1 connect+5V power supply through switch S 1 jointly.

The beneficial effects of the utility model are: this theft-proof alarm for balcony is detected infrared human body heat releasing by human body induction module circuit, when having detected that human desires enters from balcony, human body induction module circuit can export high level by control voltage comparator circuit, and then triggering controlled silicon conducting, make warning circuit continue to send acousto-optic warning fright thief, also notify that owner has human desires to enter from balcony.Therefore, having installed the balcony of this device, even if when not installing metal anti-theft net, also can play the effect of burglar alarm, balcony is without the existence of anti-theft net, and people can also obtain the better visual field and the more comfortable life sensation loosened.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of this theft-proof alarm for balcony.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described further.

As shown in Figure 1, this theft-proof alarm for balcony comprises human body induction module circuit, voltage comparator circuit and sound light alarming circuit, wherein human body induction module circuit adopts human body infrared induction module HC-SR501, voltage comparator circuit adopts LM358 chip to build, and sound light alarming circuit adopts alarm, light emitting diode and controllable silicon to build.

After on balcony installing this warning device, close a switch during unlatching S1, when thief not detected, the 2 pin output low levels of human body infrared induction module HC-SR501, the 1 pin output low level of voltage comparator LM358 chip U1, controllable silicon U2 not conducting, sound light alarming circuit does not work.When human body infrared induction module HC-SR501 detect have thief for entering outside balcony time, its 2 pin exports high level, the 1 pin upset of voltage comparator LM358 chip U1 is high level, trigger controllable silicon U2 conducting, the light emitting diode D1 of sound light alarming circuit lights, alarm LS1 sounds the alarm, and prompting homeowners has people to enter from balcony, thus plays the effect of fright thief.

Claims

1. a theft-proof alarm for balcony, it is characterized in that: this device comprises human body induction module circuit, voltage comparator circuit and sound light alarming circuit, wherein human body induction module circuit adopts human body infrared induction module HC-SR501, voltage comparator circuit adopts LM358 chip to build, and sound light alarming circuit adopts alarm, light emitting diode and controllable silicon to build;