CN104658144A - Touch-type anti-theft alarm - Google Patents

Abstract

The invention discloses a touch-type anti-theft alarm, which comprises a rectifier, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a time-based chip, a music chip, a power switch, a first resistor, a second resistor, a third resistor, a fourth resistor, a potentiometer, a trigger metal sheet, a triode and a loudspeaker. The touch-type anti-theft alarm has the advantages of high sensitivity, high reliability and strong anti-interference ability, and an alarm is given instantly once triggered; when a thief touches the alarm trigger metal sheet, the loudspeaker gives a loud alarm instantly, an alarm signal is given outside, and the thief is also shocked; the touch-type anti-theft alarm can be used for theft prevention in homes and medium and small-sized enterprises; and the touch-type anti-theft alarm has a simple circuit structure and few elements, the manufacturing cost is reduced, and popularization is facilitated.

Description

A kind of touch burglar alarm

Technical field

The present invention relates to a kind of safety device, particularly relate to a kind of touch burglar alarm.

Background technology

In recent years, people attach great importance to for security protection problem, at present, although many families all employ safer antitheft door, but some lawless persons are also more and more, they utilize superb theft means, and theft is gone smoothly again and again, cause steal phenomenon of common occurrence, to such an extent as to increasing residential households is extremely worried to property safety.At this moment alarm solves many problems for people, and wherein touch burglar alarm is widely used in the safety devices such as antitheft, warning, but the touch burglar alarm on market, most insufficient sensitivity is high, price comparison is expensive, and people are difficult to accept, and not easily popularize.

Summary of the invention

Object of the present invention is just to provide a kind of touch burglar alarm to solve the problem.

The present invention is achieved through the following technical solutions above-mentioned purpose:

The present invention includes rectifier, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, time base chip, Music Clip, power switch, first resistance, second resistance, 3rd resistance, 4th resistance, potentiometer, trigger sheet metal, triode and loudspeaker, first ac input end of described rectifier is connected with the live wire of AC power, second ac input end of described rectifier is connected with the zero line of described AC power, the cathode output end of described rectifier simultaneously with the first end of described first electric capacity, the first end of described second electric capacity, the earth terminal of base chip time described, the first end of described 4th electric capacity, the first end of described 5th electric capacity, the earth terminal of described Music Clip is connected with the earth terminal of described power switch, the cathode output end of described rectifier simultaneously with the second end of described first electric capacity, time described, the reset terminal of base chip connects, the cathode voltage end of base chip time described, the adjustable side of described potentiometer, second end of described potentiometer is connected with the collector of described triode, time described, the control voltage end of base chip is connected with the second end of described second electric capacity, time described, the trigger end of base chip is connected with the first end of described 3rd electric capacity, second end of described 3rd electric capacity is connected with described triggering sheet metal, time described base chip output terminal be connected with the second end of described 5th electric capacity and the first end of described second resistance simultaneously, second end of described second resistance is connected with the base stage of described triode, time described the discharge end of base chip simultaneously with the thresholding end of base chip time described, the first end of described first resistance is connected with the second end of described 4th electric capacity, and the second end of described first resistance is connected with the first end of described potentiometer, the emitter of described triode simultaneously with the second end of described 4th resistance, the cathode voltage end of described power switch, the input end of described power switch is connected with the second end of described loudspeaker, first vibration end of described Music Clip is connected with the first end of described 3rd resistance, described second end of the 3rd resistance vibrates to hold with second of described Music Clip and is connected, the cathode voltage end of described Music Clip is connected with the first end of described 4th resistance, the output terminal of described Music Clip is connected with the gating end of described power switch, and the output terminal of described power switch is connected with the first end of described loudspeaker.

Particularly, time described, base chip is the time base chip of model NE555, and described Music Clip is the Music Clip of model KD-9561, and described power switch is the power switch of model TWH8751.

Beneficial effect of the present invention is:

The present invention has highly sensitive, that reliability is high and antijamming capability is strong feature, be triggered at any moment, can report to the police immediately, when thief touches the triggering sheet metal of warning, loudspeaker sends loud chimes of doom immediately, not only externally send alerting signal but also play the effect to thief's fright, can be used for the antitheft of family and medium and small sized enterprises, circuit structure of the present invention is simple simultaneously, and components and parts are few, reduce cost of manufacture, be conducive to universal and promote.

Accompanying drawing explanation

Fig. 1 is circuit structure schematic diagram of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the invention will be further described:

As shown in Figure 1: the present invention includes rectifier Q, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, time base chip IC 1, Music Clip IC2, power switch IC3, first resistance R1, second resistance R2, 3rd resistance R3, 4th resistance R4, potentiometer RP, trigger sheet metal M, first ac input end of triode VT and loudspeaker BL, rectifier Q is connected with the live wire L of AC power, and second ac input end of rectifier Q is connected with the zero line N of AC power, the cathode output end of rectifier simultaneously with the first end of the first electric capacity C1, the first end of the second electric capacity C2, time base chip IC 1 earth terminal, the first end of the 4th electric capacity C4, the first end of the 5th electric capacity C5, the earth terminal of Music Clip IC2 is connected with the earth terminal of power switch IC3, the cathode output end of rectifier Q simultaneously with second end of the first electric capacity C1, time base chip IC 1 reset terminal connect, time base chip IC 1 cathode voltage end, the adjustable side of potentiometer RP, second end of potentiometer RP is connected with the collector of triode VT, time base chip IC 1 control voltage end be connected with second end of the second electric capacity C2, time base chip IC 1 trigger end be connected with the first end of the 3rd electric capacity C3, second end of the 3rd electric capacity C3 is connected with triggering sheet metal M, time base chip IC 1 output terminal be connected with second end of the 5th electric capacity C5 and the first end of the second resistance R2 simultaneously, second end of the second resistance R2 is connected with the base stage of triode VT, time base chip IC 1 discharge end simultaneously with time base chip IC 1 thresholding end, the first end of the first resistance R1 is connected with second end of the 4th electric capacity C4, and second end of the first resistance R1 is connected with the first end of potentiometer RP, the emitter of triode VT simultaneously with second end of the 4th resistance R4, the cathode voltage end of power switch IC3, the input end of power switch IC3 is connected with second end of loudspeaker BL, the first vibration end of Music Clip IC2 is connected with the first end of the 3rd resistance R3, second end of the 3rd resistance R3 and second of Music Clip IC2 vibrates to hold and is connected, the cathode voltage end of Music Clip IC2 is connected with the first end of the 4th resistance R4, the output terminal of Music Clip IC2 is connected with the gating end of power switch IC3, and the output terminal of power switch IC3 is connected with the first end of loudspeaker BL, time base chip IC 1 be the time base chip of model NE555, Music Clip IC2 is the Music Clip of model KD-9561, and power switch IC3 is the power switch of model TWH8751.

As shown in Figure 1: Music Clip IC2 and power switch IC3 and loudspeaker BL forms warning circuit, when there being thief to touch triggering sheet metal M, after the power circuit connection of Music Clip IC2, its output terminal output alarm signal, through power switch IC3 amplify after promote loudspeaker BL send " toot " police whistle sound, report to the police through after a period of time, time base chip IC 1 proceed to stable state, the low level that its output terminal exports makes triode VT end, triode VT electric power loop is below cut off, warning circuit quits work, the length of time of fire alarming is by potentiometer RP, first resistance R1 and the 4th electric capacity C4 decides, after this, alarm is in forecast state again, wherein power switch IC3 is used for amplifying audio power, make chimes of doom louder.

Claims (2)

1. a touch burglar alarm, is characterized in that: comprise rectifier, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, time base chip, Music Clip, power switch, first resistance, second resistance, 3rd resistance, 4th resistance, potentiometer, trigger sheet metal, triode and loudspeaker, first ac input end of described rectifier is connected with the live wire of AC power, second ac input end of described rectifier is connected with the zero line of described AC power, the cathode output end of described rectifier simultaneously with the first end of described first electric capacity, the first end of described second electric capacity, the earth terminal of base chip time described, the first end of described 4th electric capacity, the first end of described 5th electric capacity, the earth terminal of described Music Clip is connected with the earth terminal of described power switch, the cathode output end of described rectifier simultaneously with the second end of described first electric capacity, time described, the reset terminal of base chip connects, the cathode voltage end of base chip time described, the adjustable side of described potentiometer, second end of described potentiometer is connected with the collector of described triode, time described, the control voltage end of base chip is connected with the second end of described second electric capacity, time described, the trigger end of base chip is connected with the first end of described 3rd electric capacity, second end of described 3rd electric capacity is connected with described triggering sheet metal, time described base chip output terminal be connected with the second end of described 5th electric capacity and the first end of described second resistance simultaneously, second end of described second resistance is connected with the base stage of described triode, time described the discharge end of base chip simultaneously with the thresholding end of base chip time described, the first end of described first resistance is connected with the second end of described 4th electric capacity, and the second end of described first resistance is connected with the first end of described potentiometer, the emitter of described triode simultaneously with the second end of described 4th resistance, the cathode voltage end of described power switch, the input end of described power switch is connected with the second end of described loudspeaker, first vibration end of described Music Clip is connected with the first end of described 3rd resistance, described second end of the 3rd resistance vibrates to hold with second of described Music Clip and is connected, the cathode voltage end of described Music Clip is connected with the first end of described 4th resistance, the output terminal of described Music Clip is connected with the gating end of described power switch, and the output terminal of described power switch is connected with the first end of described loudspeaker.

2. the touch burglar alarm of one according to claim 1, it is characterized in that: time described, base chip is the time base chip of model NE555, described Music Clip is the Music Clip of model KD-9561, and described power switch is the power switch of model TWH8751.