CN201508598U

CN201508598U - Multi-path anti-theft alarm powered by double-power supply

Info

Publication number: CN201508598U
Application number: CN2009201694601U
Authority: CN
Inventors: 李村; 向凤红
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2009-10-16
Filing date: 2009-10-16
Publication date: 2010-06-16
Anticipated expiration: 2019-10-16

Abstract

The utility model provides a multi-path anti-theft alarm powered by a double-power supply, which comprises a master control chip ICI, an alarm, an indicator, a broken line detector and a direct current voltage stabilizer and is characterized by also comprising a double-power supply supplier with an input end connected with the direct current voltage stabilizer and an outer end connected with a VCC pin of the master control chip ICI. The double-power supply supplier comprises a relay J, a relay driver and a voltage stabilizer, wherein the relay driver is connected with pins of coils 1 and 2 of the relay J and consists of a diode VD1, a triode Q1 and a resistance R2; and the voltage stabilizer is connected with a contract of the relay J and consists of capacitances 4 and 5. The multi-path anti-theft alarm is powered by the double-power supply, is not externally interfered and influenced and is always in a working state, thereby ensuring the life and property safety of people. Meanwhile, the utility model can carry out anti-theft monitoring to a plurality of places or articles, so that the resource utilization is effectively improved, and the use of a sound chip is reduced, thereby reducing the cost, reducing the power consumption and ensuring stable work.

Description

A kind of multichannel burglar alarm of dual power supply

Technical field

The utility model relates to a kind of burglar alarm, and especially a kind of multichannel burglar alarm of dual power supply belongs to technical field of electronic products.

Background technology

Along with the raising of living standards of the people, the particularly quickening of new countryside construction paces, the people's living standard is improved constantly, and thing followed home security is also more and more important.Present employed anti-theft device generally can only use civil power or battery to come driving work.Because the shortage of civil power electric resources, regular meeting can't work because of power failure, perhaps because of there are unsafe factor in electric leakage, power down, and perhaps can't operate as normal because of cell degradation.More than many situations all can cause anti-theft device can't operate as normal, antitheft situation out of control often takes place.In addition, what existing anti-theft device can only be single carries out burglar alarm to some places or article, can not carry out burglar alarm by multi-faceted multiple spot, therefore makes cost too expensive, and needs job insecurity often to safeguard because technical matters makes.Therefore be necessary prior art is improved.

Summary of the invention

The purpose of this utility model is the problem that overcomes above-mentioned existence, and a kind of alarm dual power supply and that can carry out anti-thefting monitoring to place, many places and article that has is provided.

The utility model is finished by following technical proposal: a kind of multichannel burglar alarm of dual power supply, comprise main control chip IC1, alarm, indicator, thread break detector, direct current stabilizer, it is characterized in that also comprising that its input end links to each other with electric battery E with direct current stabilizer, the dual power supply device that output terminal links to each other with the VCC pin of main control chip IC1, this dual power supply device comprises relay J, with

relay J coil

1,2 pin link to each other by diode VD1, triode Q1, the relay driver that resistance R 2 constitutes, link to each other with relay J contact 4 by capacitor C 4, the voltage stabilizer that C5 constitutes.To provide the work power supply to main control chip IC1.

Described dual power supply device links to each other with the 12V power supply, links to each other with electric battery E with the 5V power supply by switch S 2 simultaneously, to provide working power to main control chip IC1.

Described direct current stabilizer comprises transformer T1, bridge rectifier VD2～VD5, voltage stabilizer IC3, IC4 and filter capacitor C8, C9, C10, C11, wherein the INT pin of IC3 connects the output of rectifier bridge VD2～VD5, the OUT pin is the 12V voltage output end, is attempted by the INT pin of IC4, another pin ground connection; The INT pin of IC4 connects the OUT pin of IC3, the OUT pin is the 5V voltage output end, another pin ground connection, so that is 16V with the 220V alternating current through transformer T1 step-down, voltage stabilizing is 12V through voltage stabilizer IC3 then, so that relay J and relay drive circuit are powered, voltage stabilizing is 5V to the voltage of 12V through voltage stabilizer IC4 more simultaneously, to provide 5V power supply to main control chip IC1.

Described alarm comprises the audio-frequency power amplifier IC2 that its input end links to each other with the P1.0 pin of main control chip IC1 by resistance R 6, and passes through the loudspeaker LS1 that capacitor C 6 links to each other with audio-frequency power amplifier IC2 output terminal.Drive loudspeaker LS1 work with P1.0 pin by main control chip IC1, thereby as the siren signal of reporting to the police.

Described thread break detector is made of at least three pairs of double wired conductors, wherein each links to each other with single-chip microcomputer P1.5～P1.7 pin respectively to one in double wired conductor one end, another root ground connection, each is terminals to two in the double wired conductor other end, link to each other with survey line to be checked respectively, whether break so that detect it, and alarm.

The utility model compared with prior art has following advantage and effect: adopt such scheme, can realize dual power supply, the stability and the convenience of anti-thefting monitoring alarm work have been strengthened, make the anti-thefting monitoring alarm not be subjected to external interference and influence, all the time in running order, thus guarantee people's life, property safety; Because the utility model can carry out anti-thefting monitoring to a plurality of places or article, has effectively improved resource utilization, has reduced user's spending; Drive loudspeaker by the direct output audio signal of single-chip microcomputer in addition, reduced the use of speech chip, thereby reduced cost; The utility model power consumption is low, and cost is low, and working stability does not need to safeguard substantially.

Description of drawings

Fig. 1 is a structural drawing of the present utility model;

Fig. 2 is a circuit structure diagram of the present utility model;

Fig. 3 is direct current regulation circuit figure in the utility model.

Embodiment

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

As Fig. 1,1 is electric battery, and 2 is operating switch S2, and 3 is reset switch S1, and 4 is relay indicating light, and 5 is ac plug, and 6 is duplex wire, and 7 is connection terminal, and 8 is the place pilot lamp.

As Fig. 2, the multichannel burglar alarm of the dual power supply that the utility model provides, comprise main control chip IC1, alarm, indicator, thread break detector, direct current stabilizer, comprise that also its input end links to each other with direct current stabilizer, electric battery E, the dual power supply device that output terminal links to each other with the VCC pin of main control chip IC1, wherein:

Described dual power supply device comprises relay J (JZC-32F/12VDC), the relay driver that constitutes by diode VD1, triode Q1, resistance R 2 that links to each other with

relay J coil

1,2 pin, the voltage stabilizer that constitutes by capacitor C 4, C5 that links to each other with relay J contact 4.When operating switch S2 closure, whether relay J detects civil power and connects, if connect: 12V voltage is input to the base stage of triode, then triode conducting, the coil of electromagnetic relay J (1,2 pin) energising, iron core in the coil produces powerful electromagnetic force at this moment, inhale moving armature and drive reed, normally closed contact 4,5 is disconnected, normally opened

contact

3,4 is connected, and then relay is connected 5V voltage, and provides power supply by the VCC pin to single-chip microcomputer, for reducing the instantaneous interference that switch motion brings, use mu balanced circuit C4, the further burning voltage of C5; If do not connect: relay J is not worked, the 4.5V voltage that electric battery E provides provides power supply through normally closed contact 4,5 to single-chip microcomputer VCC pin.12V and 5V voltage are obtained by DC voltage-stabilizing by alternating current 220V, and wherein 12V is to relay J and relay drive circuit power supply, and 5V and electric battery E are connected on the relay normally

open contact pin

3,4 by double-point double-throw switch S2, the electric battery minus earth.Double-point double-throw switch S2 is an operating switch, can control the connection of 5V and electric battery E simultaneously.Behind arbitrary power connection, the power supply power supply, single-chip microcomputer works on power.

Described alarm comprises the audio-frequency power amplifier IC2 that its input end links to each other with the P1.0 pin of main control chip IC1 by resistance R 6, and the loudspeaker LS1 that links to each other with audio-frequency power amplifier IC2 output terminal by capacitor C 6, wherein the IN+ of IC2 chip LM386 end is connected the P1.0 mouth of main control chip IC1 by R6, IN-and GND be ground connection respectively, the VS port is connected the VCC pin of single-chip microcomputer, and is furnished with voltage stabilizer, the OUT port is connected to loudspeaker by electric capacity R6, amplify with the realization audio frequency, and drive loudspeaker LS1 work.Main control chip IC1 works to drive loudspeaker LS1, thereby sends the siren signal of warning by the sound signal of P1.0 pin output 1KHz and 500Hz.When the lead of somewhere connection terminal or optional position was torn or cuts off, main control chip IC1 just can drive warning circuit by P1.0, sends alerting signal.Alarm sound is for alert song, and is very brief and uninterrupted, and the robber is had certain deterrent effect.Have only press again that reset switch S1 resets or reset switch after, police whistle sound just can disappear.

Described thread break detector is made of at least three pairs of double wired conductors, wherein each links to each other with single-chip microcomputer P1.5～P1.7 pin respectively to one in double wired conductor one end, another root ground connection, each is terminals to two in the double wired conductor other end, link to each other with survey line to be checked respectively, under the not disconnected situation of all leads, the P1.5 of main control chip IC1～P1.7 pin is a low level, and when wherein broken string appears in arbitrary lead, P1.5～corresponding port of P1.7 pin just is a high level, main control chip IC1 drives warning circuit by the P1.0 pin and sends tight short police whistle sound warning, the pilot lamp of D1～D3 correspondence is bright simultaneously, and indicator light circuit is by three LED lamps of D1～D3, resistance R 10～R12 forms, and is connected to P1.2～P1.4 pin of main control chip IC1, when P1.2～P1.4 pin output low level, D1～D3 does not work.When P1.5 pin input high level, P1.2 pin output high level, D1 is bright; When P1.6 pin input high level, P1.3 pin output high level, D2 is bright; When P1.7 pin input high level, P1.4 pin output high level, D3 is bright.The relay indicating light circuit is made up of LED lamp D4 and resistance R 9, is connected the P1.1 pin of main control chip IC1, and when P1.1 pin output LOW voltage, D4 does not work, when the VCC of main control chip IC1 input high level, and P1.1 pin output high level, D4 is bright.

The utility model also comprises by capacitor C 1, C2, the crystal oscillating circuit that crystal oscillator GY1 constitutes, by the reset circuit that switch S 1 and capacitor C 3, resistance R 1 constitute, and they are necessary conditions of main control chip IC1 work, are existing proven technique.

As Fig. 3, described direct current stabilizer comprises transformer T1, bridge rectifier VD2～VD5, voltage stabilizer IC3, IC4 and filter capacitor C8, C9, C10, C11.So that is 16V with the 220V alternating current through transformer T1 step-down, voltage stabilizing is 12V through voltage stabilizer IC3 then, and so that relay J and relay drive circuit are powered, voltage stabilizing is 5V to the voltage of 12V through voltage stabilizer IC4 more simultaneously, to provide 5V power supply to main control chip IC1.

IC1 chip in the circuit: be AT89C51 single-chip microcomputer (main control chip) that the VCC pin is succeeded No. 4 pins of electrical equipment, GND pin ground connection; The IC2 chip: be LM386, IN+ termination parallel resistance R6, R7, the other end of resistance R 6, R7 connect P1.0 pin and ground respectively.IN-and GND port ground connection.The VS port is connected on single-chip microcomputer VCC pin, and the OUT port meets loudspeaker LS1 by C6, and wherein the C6 positive pole meets OUT, and negative pole meets Yang Sheng device LS1, and C7, R8 series connection are held at OUT, other end ground connection; The IC3 chip: be 7812, for alarm provides 12V stabilized power source, 7812 INT pin connects the output of rectifier bridge VD2～VD5, and the OUT pin is exported 12V voltage, is attempted by 7805 INT pin, another pin ground connection; The IC4 chip: be 7805, be alarm 5V stabilized power source, 7805 INT pin connects 7812 OUT pin, OUT pin output 5V voltage, another corner-of-delta grounding; The pilot lamp part: the D4 positive pole is connected on the P1.1 pin by R9, and the D3 positive pole is connected on the P1.2 pin by R10, and the D2 positive pole is connected on the P1.3 pin by R11, and the D1 positive pole is connected on the P1.4 pin by R12, and negative pole is ground connection all; The crystal oscillator part that resets: crystal oscillator GY1 connects XTAL1 and XTAL2 pin, and through C1, C2 ground connection; A reset switch S1 and C3 termination RST pin in parallel, the VCC pin of another termination main control chip IC1, R1 one end ground connection, a termination RST pin.

Claims

1. the multichannel burglar alarm of a dual power supply, comprise main control chip IC1, alarm, indicator, thread break detector, direct current stabilizer, it is characterized in that also comprising that its input end links to each other with direct current stabilizer, electric battery E, the dual power supply device that output terminal links to each other with the VCC pin of main control chip IC1, this dual power supply device comprises relay J, the relay driver that constitutes by diode VD1, triode Q1, resistance R 2 that links to each other with relay J coil 1,2 pin, the voltage stabilizer that constitutes by capacitor C 4, C5 that links to each other with relay J contact 4.

2. the multichannel burglar alarm of dual power supply according to claim 1, it is characterized in that described direct current stabilizer comprises transformer T1, bridge rectifier VD2～VD5, voltage stabilizer IC3, IC4 and filter capacitor C8, C9, C10, C11, wherein the INT pin of IC3 connects the output of rectifier bridge VD2～VD5, the OUT pin is the 12V voltage output end, be attempted by the INT pin of IC4, another pin ground connection; The INT pin of IC4 connects the OUT pin of IC3, and the OUT pin is the 5V voltage output end, another pin ground connection.

3. the multichannel burglar alarm of dual power supply according to claim 1, it is characterized in that described alarm comprises the audio-frequency power amplifier IC2 that its input end links to each other with the P1.0 pin of main control chip IC1 by resistance R 6, and pass through the loudspeaker LS1 that capacitor C 6 links to each other with audio-frequency power amplifier IC2 output terminal.

4. the multichannel burglar alarm of dual power supply according to claim 1, it is characterized in that described thread break detector is made of at least three pairs of double wired conductors, wherein each links to each other with single-chip microcomputer P1.5～P1.7 pin respectively to one in double wired conductor one end, another root ground connection, each is terminals to two in the double wired conductor other end, links to each other with survey line to be checked respectively.