CN204496632U - A kind of antitheft door alarm device circuit - Google Patents

Abstract

The utility model discloses a kind of antitheft door alarm device circuit, comprise rectifier bridge Q, transformer Q, relay J 1, relay J 2 and chip U2.The utility model controls whole circuit by using chip U1 and chip U2, the structure of circuit is simplified, and sound and light alarm combines by circuit, utilize bulb H, can enabling lamp be used as at ordinary times, when running into burglar, provide flashing light alarm, burglar is frightened effective, be applicable to promote the use of.

Description

A kind of antitheft door alarm device circuit

Technical field

The utility model relates to a kind of alarm, specifically a kind of antitheft door alarm device circuit.

Background technology

Common antitheft door does not generally all install warning device, this makes burglar when opening antitheft door, as long as enabling sound is not too large, watching out for of people can not be caused, its antitheft performance is not good, and more existing antitheft door alarm device internal circuit configuration more complicated and volume are comparatively large, affects attractive in appearance on the one hand, on the other hand anti-theft effect is general, the situation such as easily to report, do not report by mistake.

Utility model content

The purpose of this utility model is to provide a kind of circuit structure simple and the antitheft door alarm device circuit that stability is strong, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

A kind of antitheft door alarm device circuit, comprise rectifier bridge Q, transformer Q, relay J 1, relay J 2 and chip U2, described transformer T coil L1 one end connects 220V alternating current respectively, bidirectional triode thyristor VS, relay J 1 contact J1-1, photoresistance RG, the transformer T coil L1 other end connects the 220V alternating current other end and bulb H respectively, the bulb H other end connects the bidirectional triode thyristor VS other end, described transformer T coil L2 two ends connect rectifier bridge Q pin 1 and rectifier bridge Q pin 3 respectively, rectifier bridge Q pin 2 ground connection, rectifier bridge Q pin 4 connects diode VD2 positive pole, diode VD2 negative pole is connecting valve S1 and diode VD3 negative pole respectively, diode VD3 positive pole connects battery E positive pole, battery E minus earth, described switch S 1 other end connects relay J 2 contact J2-1 respectively, direct earth capacitance C7 and relay J 2 coil, diode VD4 negative pole and switch S 2, switch S 2 other end connects electric capacity C8 and resistance R10, resistance R10 other end connecting triode VT6 base stage, described electric capacity C8 other end connecting triode VT7 emitter, triode VT7 base stage connecting triode VT6 emitter, triode VT6 collector connects diode VD4 positive pole respectively, relay J 2 coil and triode VT7 collector, the described relay J 2 contact J2-1 other end is connecting triode VT3 emitter respectively, direct earth capacitance C6, chip U1:B pin 10, chip U1:B pin 14, electric capacity C4, triode VT2 collector, resistance R5, resistance R3, resistance R2, resistance R1 and triode VT5 emitter, described triode VT3 collector connects relay J 1 coil and diode VD5 negative pole respectively, diode VD5 positive pole connects the relay J 1 coil other end and ground connection, described triode VT3 base stage connects chip U2 pin L1 by resistance R8, described triode VT5 collector connects hummer BL, hummer BL other end connecting triode VT4 emitter ground connection, triode VT4 collector connecting triode VT5 base stage, triode VT4 base stage connects chip U2 pin b by resistance R9, chip U2 pin VSS ground connection, chip U2 pin OSC1 connects chip U2 pin OSC2 by resistance R8, chip U2 pin SW connects chip U2 pin VDD and resistance R12 respectively, the resistance R12 other end connects chip U1:B pin 9, chip U1:B pin 8 connects the electric capacity C4 other end respectively, chip U1:B pin 12, triode VT2 emitter and resistance R6, chip U1:B pin 11 connects electric capacity C5, chip U1:B pin 7 connects the electric capacity C5 other end respectively, the resistance R6 other end and triode VT1 emitter ground connection, triode VT1 collector is connecting triode VT2 base stage and the resistance R5 other end respectively, triode VT1 base stage contact resistance R4, the resistance R4 other end connects diode VD1 positive pole and chip U1:A pin 5 respectively, diode VD1 negative pole connects variable resistor R11, the variable resistor R11 other end connects the photoresistance RG other end and the relay J 1 contact J1-1 other end respectively, described chip U1:A pin 4 is the contact resistance R3 other end and direct earth capacitance C3 respectively, chip U1:A pin 6 is the contact resistance R1 other end and elastic sheet switch AT respectively, described chip U1:A pin 1 connects chip U1:A pin 2 respectively, the resistance R2 other end and electric capacity C1, the electric capacity C1 other end connects the elastic sheet switch AT other end respectively, electric capacity C2 and chip U1:A pin 7 also ground connection, the electric capacity C2 other end connects chip U1:A pin 3.

As further program of the utility model: described antitheft door alarm device circuit is installed on antitheft door edge near doorframe place, elastic sheet switch AT is just to the magnet CT be located on doorframe.

As further program of the utility model: described chip U1:A and chip U1:B compositing chip U1, its model is NE556, and described chip U2 model is HFC9561.

As the utility model further scheme: described elastic sheet switch AT meets magnet and opens.

Compared with prior art, the beneficial effects of the utility model are: the utility model controls whole circuit by using chip U1 and chip U2, the structure of circuit is simplified, and sound and light alarm combines by circuit, utilize bulb H, can enabling lamp be used as at ordinary times, when running into burglar, provide flashing light alarm, burglar is frightened effective, be applicable to promote the use of.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of antitheft door alarm device circuit.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, in the utility model embodiment, a kind of antitheft door alarm device circuit, comprise rectifier bridge Q, transformer Q, relay J 1, relay J 2 and chip U2, transformer T coil L1 one end connects 220V alternating current respectively, bidirectional triode thyristor VS, relay J 1 contact J1-1, photoresistance RG, the transformer T coil L1 other end connects the 220V alternating current other end and bulb H respectively, the bulb H other end connects the bidirectional triode thyristor VS other end, transformer T coil L2 two ends connect rectifier bridge Q pin 1 and rectifier bridge Q pin 3 respectively, rectifier bridge Q pin 2 ground connection, rectifier bridge Q pin 4 connects diode VD2 positive pole, diode VD2 negative pole is connecting valve S1 and diode VD3 negative pole respectively, diode VD3 positive pole connects battery E positive pole, battery E minus earth, switch S 1 other end connects relay J 2 contact J2-1 respectively, direct earth capacitance C7 and relay J 2 coil, diode VD4 negative pole and switch S 2, switch S 2 other end connects electric capacity C8 and resistance R10, resistance R10 other end connecting triode VT6 base stage, electric capacity C8 other end connecting triode VT7 emitter, triode VT7 base stage connecting triode VT6 emitter, triode VT6 collector connects diode VD4 positive pole respectively, relay J 2 coil and triode VT7 collector, the relay J 2 contact J2-1 other end is connecting triode VT3 emitter respectively, direct earth capacitance C6, chip U1:B pin 10, chip U1:B pin 14, electric capacity C4, triode VT2 collector, resistance R5, resistance R3, resistance R2, resistance R1 and triode VT5 emitter, triode VT3 collector connects relay J 1 coil and diode VD5 negative pole respectively, diode VD5 positive pole connects the relay J 1 coil other end and ground connection, triode VT3 base stage connects chip U2 pin L1 by resistance R8, triode VT5 collector connects hummer BL, hummer BL other end connecting triode VT4 emitter ground connection, triode VT4 collector connecting triode VT5 base stage, triode VT4 base stage connects chip U2 pin b by resistance R9, chip U2 pin VSS ground connection, chip U2 pin OSC1 connects chip U2 pin OSC2 by resistance R8, chip U2 pin SW connects chip U2 pin VDD and resistance R12 respectively, the resistance R12 other end connects chip U1:B pin 9, chip U1:B pin 8 connects the electric capacity C4 other end respectively, chip U1:B pin 12, triode VT2 emitter and resistance R6, chip U1:B pin 11 connects electric capacity C5, chip U1:B pin 7 connects the electric capacity C5 other end respectively, the resistance R6 other end and triode VT1 emitter ground connection, triode VT1 collector is connecting triode VT2 base stage and the resistance R5 other end respectively, triode VT1 base stage contact resistance R4, the resistance R4 other end connects diode VD1 positive pole and chip U1:A pin 5 respectively, diode VD1 negative pole connects variable resistor R11, the variable resistor R11 other end connects the photoresistance RG other end and the relay J 1 contact J1-1 other end respectively, chip U1:A pin 4 is the contact resistance R3 other end and direct earth capacitance C3 respectively, chip U1:A pin 6 is the contact resistance R1 other end and elastic sheet switch AT respectively, chip U1:A pin 1 connects chip U1:A pin 2 respectively, the resistance R2 other end and electric capacity C1, the electric capacity C1 other end connects the elastic sheet switch AT other end respectively, electric capacity C2 and chip U1:A pin 7 also ground connection, the electric capacity C2 other end connects chip U1:A pin 3.

Antitheft door alarm device circuit is installed on antitheft door edge near doorframe place, and elastic sheet switch AT is just to the magnet CT be located on doorframe.

Chip U1:A and chip U1:B compositing chip U1, its model is NE556, and chip U2 model is HFC9561.

Elastic sheet switch AT meets magnet and opens.

Principle of work of the present utility model is: once antitheft door is opened, magnet CT is caused to be separated with elastic sheet switch AT, in elastic sheet switch AT, two contacts are connected naturally, the pin 6 of chip U1:A is caused to become low level (lower than 1/3 supply voltage), now U1:A set immediately, the pin 5 of U1:A becomes high level from original low level, and it is divided into two branch roads: a road makes bidirectional triode thyristor VS triggering and conducting, bulb H lights at once, and this can be used as illuminating lamp of entering.If daytime enters, because photoresistance RG internal resistance is very little, the dividing potential drop of resistance R11 and photoresistance RG is not enough to make bidirectional triode thyristor VS triggering and conducting, therefore when daytime enters, bulb H can not work.Another road electric current makes triode VT1 conducting, triode VT2 is caused to end, the short circuit status releasing of electric capacity C4, power supply is charged to electric capacity C4 by resistance R6, now the pin 8 of chip U1:B and pin 12 current potential more and more lower, when its current potential is lower than 1/3 supply voltage, the output terminal pin 9 of chip U1:B becomes high level, and now chip U2 obtains power supply and works.The L1 pin of chip U2 constantly has pulse current to produce, after triode VT3 amplifies, the contact J1-1 dynamic circuit connector promoting relay J 1 is opened, original permanent bright bulb H is so just made to become flashing lamp, to strengthen tense atmosphere when reporting to the police, the pin b output alarm sound signal of chip U2 simultaneously, after triode VT4, triode VT5 amplify, promotes hummer BL and sends loud and clear sound.

This device is reported to the police a period of time, and thief has frightened away, and its police whistle sound can stop automatically.This is because chip U1:A is monostable mode of operation, when its pin 1, the voltage on pin 2 are charged to 2/3 supply voltage, chip U1:A just automatically resets, and the pin 5 of chip U1:A is just automatically restored to low level.

Preset lockout circuit is made up of triode VT6, VT7, after unlatching complete machine power switch S1, switch S 2 should be clicked, make VT6, VT7 conducting, relay J 2 temporarily adhesive, its contact J2-1 disconnects, and cut off the power supply of warning circuit, therefore owner can not cause wrong report when arranging alarm and closing the door.After door lock well, electric capacity C9 discharge off, triode VT6, VT7 end, and relay J 2 discharges, and its contact J2-1 closes, and the power supply of pierce circuit is connected automatically, and complete machine is in stand-by state.

Claims (4)

1. an antitheft door alarm device circuit, comprise rectifier bridge Q, transformer Q, relay J 1, relay J 2 and chip U2, it is characterized in that, described transformer T coil L1 one end connects 220V alternating current respectively, bidirectional triode thyristor VS, relay J 1 contact J1-1, photoresistance RG, the transformer T coil L1 other end connects the 220V alternating current other end and bulb H respectively, the bulb H other end connects the bidirectional triode thyristor VS other end, described transformer T coil L2 two ends connect rectifier bridge Q pin 1 and rectifier bridge Q pin 3 respectively, rectifier bridge Q pin 2 ground connection, rectifier bridge Q pin 4 connects diode VD2 positive pole, diode VD2 negative pole is connecting valve S1 and diode VD3 negative pole respectively, diode VD3 positive pole connects battery E positive pole, battery E minus earth, described switch S 1 other end connects relay J 2 contact J2-1 respectively, direct earth capacitance C7 and relay J 2 coil, diode VD4 negative pole and switch S 2, switch S 2 other end connects electric capacity C8 and resistance R10, resistance R10 other end connecting triode VT6 base stage, described electric capacity C8 other end connecting triode VT7 emitter, triode VT7 base stage connecting triode VT6 emitter, triode VT6 collector connects diode VD4 positive pole respectively, relay J 2 coil and triode VT7 collector, the described relay J 2 contact J2-1 other end is connecting triode VT3 emitter respectively, direct earth capacitance C6, chip U1:B pin 10, chip U1:B pin 14, electric capacity C4, triode VT2 collector, resistance R5, resistance R3, resistance R2, resistance R1 and triode VT5 emitter, described triode VT3 collector connects relay J 1 coil and diode VD5 negative pole respectively, diode VD5 positive pole connects the relay J 1 coil other end and ground connection, described triode VT3 base stage connects chip U2 pin L1 by resistance R8, described triode VT5 collector connects hummer BL, hummer BL other end connecting triode VT4 emitter ground connection, triode VT4 collector connecting triode VT5 base stage, triode VT4 base stage connects chip U2 pin b by resistance R9, chip U2 pin VSS ground connection, chip U2 pin OSC1 connects chip U2 pin OSC2 by resistance R8, chip U2 pin SW connects chip U2 pin VDD and resistance R12 respectively, the resistance R12 other end connects chip U1:B pin 9, chip U1:B pin 8 connects the electric capacity C4 other end respectively, chip U1:B pin 12, triode VT2 emitter and resistance R6, chip U1:B pin 11 connects electric capacity C5, chip U1:B pin 7 connects the electric capacity C5 other end respectively, the resistance R6 other end and triode VT1 emitter ground connection, triode VT1 collector is connecting triode VT2 base stage and the resistance R5 other end respectively, triode VT1 base stage contact resistance R4, the resistance R4 other end connects diode VD1 positive pole and chip U1:A pin 5 respectively, diode VD1 negative pole connects variable resistor R11, the variable resistor R11 other end connects the photoresistance RG other end and the relay J 1 contact J1-1 other end respectively, described chip U1:A pin 4 is the contact resistance R3 other end and direct earth capacitance C3 respectively, chip U1:A pin 6 is the contact resistance R1 other end and elastic sheet switch AT respectively, described chip U1:A pin 1 connects chip U1:A pin 2 respectively, the resistance R2 other end and electric capacity C1, the electric capacity C1 other end connects the elastic sheet switch AT other end respectively, electric capacity C2 and chip U1:A pin 7 also ground connection, the electric capacity C2 other end connects chip U1:A pin 3.

2. antitheft door alarm device circuit according to claim 1, is characterized in that, described antitheft door alarm device circuit is installed on antitheft door edge near doorframe place, and elastic sheet switch AT is just to the magnet CT be located on doorframe.

3. antitheft door alarm device circuit according to claim 1, is characterized in that, described chip U1:A and chip U1:B compositing chip U1, and its model is NE556, and described chip U2 model is HFC9561.

4. antitheft door alarm device circuit according to claim 1, is characterized in that, described elastic sheet switch AT meets magnet and opens.