CN102426744A - Anti-theft alarm device of household electrical appliance - Google Patents
Anti-theft alarm device of household electrical appliance Download PDFInfo
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- CN102426744A CN102426744A CN2011102597653A CN201110259765A CN102426744A CN 102426744 A CN102426744 A CN 102426744A CN 2011102597653 A CN2011102597653 A CN 2011102597653A CN 201110259765 A CN201110259765 A CN 201110259765A CN 102426744 A CN102426744 A CN 102426744A
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Abstract
The invention, which belongs to the alarm device technology field, relates to an anti-theft alarm device of a household electrical appliance. The device comprises a silicon controlled rectifier trigger switch circuit and an analog siren circuit; the analog siren circuit includes an alarm music chip (IC), a second resistor (R2), a third resistor (R3), a first crystal triode (VT1), a second crystal triode (VT2), and a loudspeaker (BL); and the silicon controlled rectifier trigger switch circuit consists of an unidirectional silicon controlled rectifier (SCR), a first resistor (R1) and a microswitch (AN). According to the invention, the anti-theft alarm device of the household electrical appliance has characteristics of small volume, safety and reliability, low cost, easy and simple operation, strong concealment and loud sound and the like; and therefore, the anti-theft alarm device can be widely applied for theft prevention of any household electrical appliance.
Description
Technical field
The present invention relates to a kind of household electrical appliance burglar alarm, belong to the warning device technical field.
Background technology
At present, a lot of vehicles all have guard against theft and alarm system, but some household electrical appliance of family, especially valuable household electrical appliance but do not have anti-theft device.Existing a kind of domestic antitheft alarm on the market; Be with physical method or electronic technology, survey the intrusion behavior in the monitored area of deploying troops on garrison duty that occurs in automatically, produce alerting signal; And the regional position of pointing out the operator on duty to report to the police, the system that demonstration possibly take some countermeasures.Alarm host machine is the critical facility of unscheduled events such as prevention robbery, theft.In case the generation accident just can accurately show the site of an accident in security control center through the sound and light alarm signal, makes in taking emergency measures rapidly.The burglar alarm main frame has constituted security system with gateway control system, closed-circuit TV monitoring system, visitor's intercom system and electronic patrol system etc.But this burglar alarm cost is higher, and complex structure receives the interference of external electromagnetic ripple easily.
Summary of the invention
The present invention proposes a kind of household electrical appliance burglar alarm, have the advantages that volume is little, sound is big, be fit to uses such as family, hotel, office.
The present invention adopts following technical scheme for solving its technical matters:
A kind of household electrical appliance burglar alarm; Comprise controllable silicon trigger switch circuit and simulation police whistle sound circuit; Wherein, Simulation police whistle sound circuit comprises warning Music Clip, second resistance, the 3rd resistance, first transistor, second transistor and loudspeaker, and power supply provides electric signal to entire circuit, and the output terminal of warning Music Clip is connected with the base stage of first transistor; The collector of first transistor is connected with an end of the 3rd resistance, the base stage of second transistor respectively; The other end of the 3rd resistance is connected with the input end of warning Music Clip, the emitter of second transistor respectively, and the emitter of second transistor is connected with the positive pole of power supply through switch, and the collector of second transistor is connected with the positive pole of loudspeaker; The negative pole of loudspeaker connects the emitter of first transistor and the negative pole of power supply respectively, and second resistance is connected in parallel on the input/output terminal of warning Music Clip; Controllable silicon trigger switch circuit comprises one-way SCR, first resistance and microswitch; The negative electrode of one-way SCR is connected with the emitter of the negative pole of power supply, first transistor; The trigger end of one-way SCR links to each other with microswitch one end; The microswitch other end links to each other with an end of first resistance, and the other end of first resistance links to each other with the input end of warning Music Clip, and the anode of one-way SCR is connected with another input end of warning Music Clip.
Beneficial effect of the present invention is following:
This household electrical appliance burglar alarm can have characteristics such as volume is little, safe and reliable, cheap, easy and simple to handle, disguised by force, sound is big adaptable across the antitheft of any household electrical appliance.Swarm into or mishap when taking place as the robber, the loudspeaker your writing that thunders immediately, the deterrent effect that sounded the alarm makes the ruffian panic-stricken, has no way of doing it, and can notify the generation of owner's accident, lets the robber fold one's hands for capture.Be fit to uses such as family, hotel, office.
Description of drawings
Fig. 1 is the circuit theory diagrams of this device.
Embodiment
Below in conjunction with accompanying drawing the invention is explained further details.
Like Fig. 1, this device is made up of controllable silicon trigger switch circuit and simulation police whistle sound circuit two parts.Warning device part can be installed in the plastics capsule, is placed on the place that is prone to hear chimes of doom (like duty room etc.).With bifilar fine rule microswitch AN is caused the household electrical appliances place, and microswitch AN is placed in desktop, table top or cabinet for TV face etc. dexterously.This household electrical appliance burglar alarm has the advantages that volume is little, sound is big.Be fit to uses such as family, hotel, office.
Form simulation police whistle sound circuit by warning music chip IC, second resistance R 2, the 3rd resistance R 3, the first transistor VT1, the second transistor VT2 and loudspeaker BL; The music of wherein reporting to the police chip IC can adopt the KD-9561 chip; The first transistor VT1 can adopt 3DG6; The second transistor VT2 can adopt 3AX81, works as switch closure, and power supply provides electric signal to entire circuit; Form controllable silicon trigger switch circuit by unidirectional controllable silicon S CR, first resistance R 1 and microswitch AN, unidirectional controllable silicon S CR can adopt 3CT2K.At ordinary times, microswitch AN receives the compressing of household electrical appliance, and its two normally closed contact is broken off, unidirectional controllable silicon S CR Triggerless and blocking, and alarm is not worked.When household electrical appliance are removed time-out; Microswitch AN two contact auto-closings; The trigger end of unidirectional controllable silicon S CR obtains trigger pip, unidirectional controllable silicon S CR conducting, warning music chip IC energising work through first resistance R 1 from positive source; The police whistle sound electric signal of its output terminal output promotes loudspeaker BL and sends loud and clear chimes of doom through the first transistor VT1, the second transistor VT2 power amplification.At this moment, even household electrical appliance are replaced or destroyed microswitch AN, also can't stop chimes of doom.Have only owner to open to be installed together and other people are difficult to the switch that finds for the moment, could remove warning with alarm.
Claims (1)
1. household electrical appliance burglar alarm; It is characterized in that comprising controllable silicon trigger switch circuit and simulation police whistle sound circuit; Wherein, Simulation police whistle sound circuit comprises warning Music Clip (IC), second resistance (R2), the 3rd resistance (R3), first transistor (VT1), second transistor (VT2) and loudspeaker (BL); Power supply provides electric signal to entire circuit; The output terminal of warning Music Clip (IC) is connected with the base stage of first transistor (VT1); The collector of first transistor (VT1) is connected with an end of the 3rd resistance (R3), the base stage of second transistor (VT2) respectively; The other end of the 3rd resistance (R3) is connected with the input end of warning Music Clip (IC), the emitter of second transistor (VT2) respectively, and the emitter of second transistor (VT2) is connected with the positive pole of power supply through switch, and the collector of second transistor (VT2) is connected with the positive pole of loudspeaker (BL); The negative pole of loudspeaker (BL) connects the emitter of first transistor (VT1) and the negative pole of power supply respectively, and second resistance (R2) is connected in parallel on the input/output terminal of warning Music Clip (IC); Controllable silicon trigger switch circuit comprises one-way SCR (SCR), first resistance (R1) and microswitch (AN); The emitter of the negative electrode of one-way SCR (SCR) and the negative pole of power supply, first transistor (VT1) is connected; The trigger end of one-way SCR (SCR) links to each other with microswitch (AN) end; Microswitch (AN) other end links to each other with an end of first resistance (R1); The other end of first resistance (R1) links to each other with the input end of warning Music Clip (IC), and the anode of one-way SCR (SCR) is connected with another input end of warning Music Clip (IC).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102597653A CN102426744A (en) | 2011-09-05 | 2011-09-05 | Anti-theft alarm device of household electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102597653A CN102426744A (en) | 2011-09-05 | 2011-09-05 | Anti-theft alarm device of household electrical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102426744A true CN102426744A (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102597653A Pending CN102426744A (en) | 2011-09-05 | 2011-09-05 | Anti-theft alarm device of household electrical appliance |
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| CN (1) | CN102426744A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111462433A (en) * | 2020-04-16 | 2020-07-28 | 南京奇趣数字科技有限公司 | Security alarm integrated system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036685U (en) * | 1988-08-13 | 1989-04-26 | 兰家富 | Door lock burglar alarm |
| RU2054574C1 (en) * | 1993-03-24 | 1996-02-20 | Фирма "Ролег Лимитед" | Electronic ignition unit with anti-stealing device |
| CN200990124Y (en) * | 2006-12-20 | 2007-12-12 | 袁国庆 | Electronic antitheft device |
| CN201435119Y (en) * | 2009-03-24 | 2010-03-31 | 王延祥 | Anti-theft alarm device for electric equipment |
| CN201773463U (en) * | 2010-09-17 | 2011-03-23 | 王雪峰 | Household disconnection theft-proof alarm |
| CN202205311U (en) * | 2011-09-05 | 2012-04-25 | 陈和娟 | Burglar alarm device for household appliances |
-
2011
- 2011-09-05 CN CN2011102597653A patent/CN102426744A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2036685U (en) * | 1988-08-13 | 1989-04-26 | 兰家富 | Door lock burglar alarm |
| RU2054574C1 (en) * | 1993-03-24 | 1996-02-20 | Фирма "Ролег Лимитед" | Electronic ignition unit with anti-stealing device |
| CN200990124Y (en) * | 2006-12-20 | 2007-12-12 | 袁国庆 | Electronic antitheft device |
| CN201435119Y (en) * | 2009-03-24 | 2010-03-31 | 王延祥 | Anti-theft alarm device for electric equipment |
| CN201773463U (en) * | 2010-09-17 | 2011-03-23 | 王雪峰 | Household disconnection theft-proof alarm |
| CN202205311U (en) * | 2011-09-05 | 2012-04-25 | 陈和娟 | Burglar alarm device for household appliances |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111462433A (en) * | 2020-04-16 | 2020-07-28 | 南京奇趣数字科技有限公司 | Security alarm integrated system |
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Application publication date: 20120425 |