CN103810804A - Line breaking type antitheft alarm - Google Patents
Line breaking type antitheft alarm Download PDFInfo
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- CN103810804A CN103810804A CN201210452064.6A CN201210452064A CN103810804A CN 103810804 A CN103810804 A CN 103810804A CN 201210452064 A CN201210452064 A CN 201210452064A CN 103810804 A CN103810804 A CN 103810804A
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Abstract
The invention disclose a line breaking type antitheft alarm which comprises a transformer, a rectifying circuit, a switch, a magnetically controlled switch, a magnet, a first light-emitting diode, a second light-emitting diode, a relay, a time base integrated chip, a four-tone warning chip, a voltage stabilizing tube, a loudspeaker, a first diode, a second diode, a third diode, a fourth diode, a fifth diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor, a third capacitor, a triode and a battery. When the magnetically controlled switch is turned off, a power supply rapidly charges the second capacitor through the second resistor and a sixth diode, and voltage of the trigger end of and voltage of the reset locking end of a time base integrated circuit also rise; when the voltage of the trigger end of and the voltage of the reset locking end are higher than a threshold value, the output end outputs a low level, a warning circuit works, and the loudspeaker gives an alarm. The line breaking type warning is adopted, a line breaking type warning mode has a breakage-proof function, and the alarm can also be given even if a signal line is destroyed; the line breaking type antitheft alarm is simple in circuit structure, adopted elements are fewer, so that the cost is low, and the line breaking type antitheft alarm is favorable for popularization.
Description
Technical field
The present invention relates to a kind of burglar alarm, relate in particular to a kind of break line type burglar alarm.
Background technology
Security device of the prior art is widely used, varied, and still, general burglar alarm effect is unsatisfactory, and easily destroyed, and the burglar alarm cost of higher gears time is higher, can not adapt to ordinary consumer to use, universal difficulty.
Summary of the invention
Object of the present invention is just to provide in order to address the above problem a kind of break line type burglar alarm.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes transformer, rectification circuit, switch, magnetic switch, magnet, the first light emitting diode, the second light emitting diode, relay, time base integrated chip, four tones of standard Chinese pronunciation alarm chip, stabilivolt, loudspeaker, the first diode to the five diodes, the first resistance to the eight resistance, the first electric capacity to the three electric capacity, triode and battery, the two ends of the elementary and AC power of described transformer are connected, and the two ends of the input end of the secondary and described rectification circuit of described transformer are connected, the anodal while of described rectification circuit and the first end of described the first electric capacity, the first end of described the first resistance, the first end of described relay is connected with the positive pole of described the first diode, the negative pole while of described rectification circuit and the second end of described the first electric capacity, the negative pole of described battery, the negative pole of described the first light emitting diode, the second end of described relay, the first end of described the second electric capacity, the negative power supply input end of base integrated chip when described, the first end of described magnetic switch is connected with the first end of described the 4th resistance, the second end of described the first resistance is connected with the positive pole of described the first light emitting diode, the negative pole of described the first diode is connected with the first end of described switch and the first end of described relay normally closed switch simultaneously, the second end of described relay normally closed switch is connected with the positive pole of described battery, the second end while of described switch and the first end of described the second resistance, the cathode power supply input end of base integrated chip when described, the replacement end of base integrated chip when described, the first end of described the 5th resistance, the first end of described the 6th resistance, the first end of described the 8th resistance is connected with the positive pole of described the 4th diode, the second end of described the second resistance is connected with the positive pole of described the second diode and the second end of described magnetic switch simultaneously, the replacement keyed end of the negative pole while of described the second diode base integrated chip when described, the trigger end of base integrated chip when described, the second end of the first end of described the 3rd resistance and described the second electric capacity is connected, the discharge end of the second end of described the 3rd resistance base integrated chip when described is connected, the second end of described the 4th resistance simultaneously when described the control end of base integrated chip and the second end of described the 5th resistance be connected, when described, the output terminal of base integrated chip is connected with the negative pole of described the 3rd diode, the anodal while of described the 3rd diode and the negative pole of described the second light emitting diode, the negative electricity source of described four tones of standard Chinese pronunciation alarm chip, the positive pole of described stabilivolt, described the 3rd first end of electric capacity and the emitter of described triode are connected, and the positive pole of described the second light emitting diode is connected with the second end of described the 6th resistance, the second end while of described the 8th resistance and the cathode power supply end of described four tones of standard Chinese pronunciation alarm chip, the control end of described four tones of standard Chinese pronunciation alarm chip, the negative pole of described stabilivolt is connected with the second end of described the 3rd electric capacity, the two ends of described the 7th resistance are connected with the two ends of the adjustable side of described four tones of standard Chinese pronunciation alarm chip, the output terminal of described four tones of standard Chinese pronunciation alarm chip is connected with the base stage of described triode, the collector of described triode is connected with the first end of described loudspeaker, the second end of described loudspeaker is connected with the negative pole of described the 5th diode, the positive pole of described the 5th diode is connected with the negative pole of described the 4th diode, and described magnet is arranged at and the corresponding position of described magnetic switch.
Beneficial effect of the present invention is:
The present invention adopts break alarm, and this kind of mode has destruction-proof function, also can report to the police, and this practical information circuit structure is simple even if destroy signal wire, adopts components and parts less, and therefore cost is lower, is conducive to 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 transformer T, rectification circuit DR, K switch 1, magnetic switch K2, magnet CT, the first LED 1, the second LED 2, relay J, time basis set become chip IC 1, four tones of standard Chinese pronunciation alarm chip IC2, stabilivolt DW, loudspeaker Y, the first diode D1 to the five diode D5, the first resistance R 1 is to the 8th resistance R 8, the first capacitor C 1 is to the 3rd capacitor C 3, triode VT and battery E, the two ends of the elementary and AC power of transformer T are connected, and the two ends of the input end of the secondary and rectification circuit DR of transformer T are connected, the anodal while of rectification circuit DR and the first end of the first capacitor C 1, the first end of the first resistance R 1, the first end of relay J is connected with the positive pole of the first diode D1, the negative pole while of rectification circuit DR and the second end of the first capacitor C 1, the negative pole of battery E, the negative pole of the first LED 1, the second end of relay J, the first end of the second capacitor C 2, time basis set become the negative power supply input end of chip IC 1, the first end of magnetic switch K2 is connected with the first end of the 4th resistance R 4, the second end of the first resistance R 1 is connected with the positive pole of the first LED 1, the negative pole of the first diode D1 is connected with the first end of K switch 1 and the first end of relay J normally closed switch J-1 simultaneously, the second end of relay J normally closed switch J-1 is connected with the positive pole of battery E, the second end while of K switch 1 and the first end of the second resistance R 2, time basis set become the cathode power supply input end of chip IC 1, time basis set become the replacement end of chip IC 1, the first end of the 5th resistance R 5, the first end of the 6th resistance R 6, the first end of the 8th resistance R 8 is connected with the positive pole of the 4th diode D4, the second end of the second resistance R 2 is connected with the positive pole of the second diode D2 and the second end of magnetic switch K2 simultaneously, the negative pole while of the second diode D2 with time basis set become the replacement keyed end of chip IC 1, time basis set become the trigger end of chip IC 1, the first end of the 3rd resistance R 3 is connected with the second end of the second capacitor C 2, the second end of the 3rd resistance R 3 with time basis set become the discharge end of chip IC 1 to be connected, the second end of the 4th resistance R 4 simultaneously with time basis set become the control end of chip IC 1 and the second end of the 5th resistance R 5 to be connected, time basis set become the output terminal of chip IC 1 to be connected with the negative pole of the 3rd diode D3, the 3rd diode D3 anodal simultaneously and the negative pole of the second LED 2, the negative electricity source of four tones of standard Chinese pronunciation alarm chip IC2, the positive pole of stabilivolt DW, the first end of the 3rd capacitor C 3 is connected with the emitter of triode VT, and the positive pole of the second LED 2 is connected with the second end of the 6th resistance R 6, the second end while of the 8th resistance R 8 and the cathode power supply end of four tones of standard Chinese pronunciation alarm chip IC2, the control end of four tones of standard Chinese pronunciation alarm chip IC2, the negative pole of stabilivolt DW is connected with the second end of the 3rd capacitor C 3, the two ends of the 7th resistance R 7 are connected with the two ends of the adjustable side of four tones of standard Chinese pronunciation alarm chip IC2, the output terminal of four tones of standard Chinese pronunciation alarm chip IC2 is connected with the base stage of triode VT, the collector of triode VT is connected with the first end of loudspeaker Y, the second end of loudspeaker Y is connected with the negative pole of the 5th diode D5, the positive pole of the 5th diode D5 is connected with the negative pole of the 4th diode D4, and magnet CT is arranged at the corresponding position with magnetic switch K2.、
As shown in Figure 1: control termination the 4th resistance R 4 and the 5th resistance R 5 dividing potential drops of time-base integrated circuit IC1 can obtain 3V voltage, as the threshold voltage of trigger end and replacement keyed end.By magnetic switch K2 closure, the trigger end of time-base integrated circuit IC1 and replacement keyed end are low level, can obtain output terminal output high level according to the relation between the trigger end of time-base integrated circuit IC1 and replacement keyed end voltage and output end voltage, the positive and negative two ends of the warning circuit no-voltage of four tones of standard Chinese pronunciation alarm chip IC2 composition is not worked.When magnetic switch K2 disconnects, power supply charges to the second capacitor C 2 rapidly by the second resistance R 2, the 6th diode D6, the trigger end of time-base integrated circuit IC1 and replacement keyed end voltage also increase, when higher than threshold value, output terminal output low level, warning circuit work, loudspeaker Y sounds the alarm.When magnetic switch K2 is during in not closed situation, report to the police and will continue.When disconnecting at magnetic switch K2 after moment again at once closed by burglar in the situation that, voltage in the second capacitor C 2 is slowly discharged by the discharge end of time-base integrated circuit IC1 by the 3rd resistance R 3, now warning circuit is still in work, send chimes of doom, reach the object that maintains warning, only has when the trigger end of base integrated circuit (IC) 1 and the level of replacement keyed end were reduced to threshold voltage down gradually at that time just stop alarm of output terminal output high level.Can change the delay time of warning circuit by adjusting the 3rd resistance R 3 and the second capacitor C 2.The operating voltage of four tones of standard Chinese pronunciation alarm chip IC2 is 3V, and it provides after by the 8th resistance R 8 and stabilivolt DW dividing potential drop, and the 3rd capacitor C 3 can be improved the tone color of loudspeaker effectively, has guaranteed the safety of loudspeaker by the dividing potential drop of the 8th diode D8 and the 9th diode D9.
This money alarm adopts mains-supplied at ordinary times, and battery E current supply circuit is cut off in the relay J that switches on power adhesive.After civil power is cut off, relay J is unclamped, and normally closed switch J-1 connects alarm can pass through powered battery.In order to prevent that burglar from destroying magnetic switch K2, magnetic switch K2 adopts a, b, tri-specifications of the same race of c, color wire of the same race, as burglar is first twisted together three wires before committing a crime, attempt short circuit door status switch, after b, c two wires are connected, c point current potential becomes as low level, triode VT saturation conduction, and warning circuit directly sends chimes of doom.While cutting off signal wire a or b as burglar, triode VT saturation conduction, warning circuit also can send chimes of doom.
Claims (1)
1. a break line type burglar alarm, is characterized in that: comprise transformer, rectification circuit, switch, magnetic switch, magnet, the first light emitting diode, the second light emitting diode, relay, time base integrated chip, four tones of standard Chinese pronunciation alarm chip, stabilivolt, loudspeaker, the first diode to the five diodes, the first resistance to the eight resistance, the first electric capacity to the three electric capacity, triode and battery, the two ends of the elementary and AC power of described transformer are connected, and the two ends of the input end of the secondary and described rectification circuit of described transformer are connected, the anodal while of described rectification circuit and the first end of described the first electric capacity, the first end of described the first resistance, the first end of described relay is connected with the positive pole of described the first diode, the negative pole while of described rectification circuit and the second end of described the first electric capacity, the negative pole of described battery, the negative pole of described the first light emitting diode, the second end of described relay, the first end of described the second electric capacity, the negative power supply input end of base integrated chip when described, the first end of described magnetic switch is connected with the first end of described the 4th resistance, the second end of described the first resistance is connected with the positive pole of described the first light emitting diode, the negative pole of described the first diode is connected with the first end of described switch and the first end of described relay normally closed switch simultaneously, the second end of described relay normally closed switch is connected with the positive pole of described battery, the second end while of described switch and the first end of described the second resistance, the cathode power supply input end of base integrated chip when described, the replacement end of base integrated chip when described, the first end of described the 5th resistance, the first end of described the 6th resistance, the first end of described the 8th resistance is connected with the positive pole of described the 4th diode, the second end of described the second resistance is connected with the positive pole of described the second diode and the second end of described magnetic switch simultaneously, the replacement keyed end of the negative pole while of described the second diode base integrated chip when described, the trigger end of base integrated chip when described, the second end of the first end of described the 3rd resistance and described the second electric capacity is connected, the discharge end of the second end of described the 3rd resistance base integrated chip when described is connected, the second end of described the 4th resistance simultaneously when described the control end of base integrated chip and the second end of described the 5th resistance be connected, when described, the output terminal of base integrated chip is connected with the negative pole of described the 3rd diode, the anodal while of described the 3rd diode and the negative pole of described the second light emitting diode, the negative electricity source of described four tones of standard Chinese pronunciation alarm chip, the positive pole of described stabilivolt, described the 3rd first end of electric capacity and the emitter of described triode are connected, and the positive pole of described the second light emitting diode is connected with the second end of described the 6th resistance, the second end while of described the 8th resistance and the cathode power supply end of described four tones of standard Chinese pronunciation alarm chip, the control end of described four tones of standard Chinese pronunciation alarm chip, the negative pole of described stabilivolt is connected with the second end of described the 3rd electric capacity, the two ends of described the 7th resistance are connected with the two ends of the adjustable side of described four tones of standard Chinese pronunciation alarm chip, the output terminal of described four tones of standard Chinese pronunciation alarm chip is connected with the base stage of described triode, the collector of described triode is connected with the first end of described loudspeaker, the second end of described loudspeaker is connected with the negative pole of described the 5th diode, the positive pole of described the 5th diode is connected with the negative pole of described the 4th diode, and described magnet is arranged at and the corresponding position of described magnetic switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452064.6A CN103810804A (en) | 2012-11-13 | 2012-11-13 | Line breaking type antitheft alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452064.6A CN103810804A (en) | 2012-11-13 | 2012-11-13 | Line breaking type antitheft alarm |
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| Publication Number | Publication Date |
|---|---|
| CN103810804A true CN103810804A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210452064.6A Pending CN103810804A (en) | 2012-11-13 | 2012-11-13 | Line breaking type antitheft alarm |
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| CN (1) | CN103810804A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447986A (en) * | 2016-10-18 | 2017-02-22 | 合肥浮点信息科技有限公司 | Communication equipment auxiliary protection system |
| CN107891928A (en) * | 2017-12-06 | 2018-04-10 | 昆明理工大学津桥学院 | Electric bicycle anti-theft and alarm circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050073423A1 (en) * | 2003-09-22 | 2005-04-07 | Kim Walter Taehwan | Anti-theft and security system for computers |
| JP2007272634A (en) * | 2006-03-31 | 2007-10-18 | Fuji Electric Systems Co Ltd | Loss/theft prevention system |
| CN101059904A (en) * | 2006-03-03 | 2007-10-24 | 王胤 | A mobile communication network-based intelligent anti-theft alarm device |
| CN202995942U (en) * | 2012-11-13 | 2013-06-12 | 成都万维图新信息技术有限公司 | Disconnection-type burglar alarm |
-
2012
- 2012-11-13 CN CN201210452064.6A patent/CN103810804A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050073423A1 (en) * | 2003-09-22 | 2005-04-07 | Kim Walter Taehwan | Anti-theft and security system for computers |
| CN101059904A (en) * | 2006-03-03 | 2007-10-24 | 王胤 | A mobile communication network-based intelligent anti-theft alarm device |
| JP2007272634A (en) * | 2006-03-31 | 2007-10-18 | Fuji Electric Systems Co Ltd | Loss/theft prevention system |
| CN202995942U (en) * | 2012-11-13 | 2013-06-12 | 成都万维图新信息技术有限公司 | Disconnection-type burglar alarm |
Non-Patent Citations (1)
| Title |
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| 盛南岭等: "一款实用的断线式防盗报警器", 《电子制作》, no. 8, 31 August 2007 (2007-08-31) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447986A (en) * | 2016-10-18 | 2017-02-22 | 合肥浮点信息科技有限公司 | Communication equipment auxiliary protection system |
| CN107891928A (en) * | 2017-12-06 | 2018-04-10 | 昆明理工大学津桥学院 | Electric bicycle anti-theft and alarm circuit |
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Application publication date: 20140521 |