CN204515953U - A kind of warning system for burglary prevention of laptop - Google Patents
A kind of warning system for burglary prevention of laptop Download PDFInfo
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- CN204515953U CN204515953U CN201520258372.4U CN201520258372U CN204515953U CN 204515953 U CN204515953 U CN 204515953U CN 201520258372 U CN201520258372 U CN 201520258372U CN 204515953 U CN204515953 U CN 204515953U
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Abstract
The utility model discloses a kind of warning system for burglary prevention of laptop, belong to burglary prevention of laptop technical field.The conversion of the utility model involving vibrations sensor B, electric signal and amplifying circuit, control circuit power supply VCC, astable multivibrator and alarming horn BL; Described vibration transducer B is connected with the input end of amplifying circuit with electric signal conversion, the conversion of this electric signal is connected with amplifying circuit and astable multivibrator, the output terminal of astable multivibrator connects alarming horn BL, and described control circuit power supply VCC is that whole system is powered.The utility model comparatively installs vibration transducer in shelter at notebook computer, and no matter thief wants to steal computer or attempt to remove this vibration transducer, all can trigger vibration transducer action, and then trigger alarm circuit working, send alerting signal, reach antitheft object, there is better anti-theft effect.
Description
Technical field
The utility model relates to burglary prevention of laptop technical field, more particularly, relates to a kind of warning system for burglary prevention of laptop.
Background technology
Notebook computer is because compact, and the advantage such as to be easy to carry is liked deeply by people and favors, and people such as conveniently to go on business at the mobile environment for use, usually select notebook computer.But, exactly because the feature of also notebook computer compact, the object causing it to become thief stealing.The anti-theft technique of current desktop computer is relatively ripe, because desktop computer position is fixed, anti-theft device designs well, installs, warning starting switch can be arranged on concealed location, and it is relatively blank for the anti-theft technique of notebook, substantially be all that some theftproof locks are set, the burglar alarm technology of desktop computer can not be applied mechanically.And because the position of notebook computer is not fixed, warning starting switch can only be arranged on the fuselage of notebook, but easily like this to be found by thief, again because existing warning starting switch designs still existing defects, thief can easily be removed, and therefore existing notebook computer antitheft scheme can not play good anti-theft effect.
Through retrieval, China Patent No. ZL 201320826490.1, authorized announcement date is on June 18th, 2014, invention and created name is: theft alarm for notebook computer, this application case is made up of the loudspeaker be fixed in shell, controller and vibration sensor, and vibration sensor is electrically connected with loudspeaker by controller; Vibration sensor is provided with the housing of mercury bead by inside, at least two pairs of electrodes be fixed in this housing are formed.This application case aims to provide a kind of alarm that can send acoustic alarm signal when cutting off or moving notebook computer, but this application case alarm is connected with notebook computer by transmission line, thief is very easy to find, thus left the chance that thief manages to remove alarm for, still there is the risk that notebook computer is stolen.
China Patent No. ZL201420135534.0, authorized announcement date is on July 30th, 2014, and invention and created name is: burglary prevention of laptop alarm; This application case comprises mercury cut-off K1, switching signal radiating circuit, switching signal receiving circuit, inclination trigger circuit, astable multivibrator and alarming horn BL; Arrange a pair normally opened contact in mercury cut-off K1, mercury cut-off K1 tilt signals output terminal is connected with inclination trigger circuit tilt signals input end; The warning trigger pip output terminal of inclination trigger circuit is connected with the warning trigger pip input end of astable multivibrator; The alarm command output terminal of astable multivibrator is connected with the Enable Pin of alarming horn BL; Switching signal radiating circuit sends warning function switch order, and switching signal receiving circuit receives this warning function switch order; The warning function switch order output terminal of switching signal receiving circuit is connected with the warning function switch order control end of inclination trigger circuit.The antitheft starting switch of this application case is not arranged on the fuselage of notebook, and thief not easily finds; But the circuit structure of this application case is still more complicated, and reaction sensitivity also has much room for improvement, still need further improvement.
Summary of the invention
1. the utility model technical matters that will solve
It is easily stolen that the purpose of this utility model is to solve notebook computer, brings the problem of economic loss, provide a kind of warning system for burglary prevention of laptop to user; The utility model comparatively installs vibration transducer in shelter at notebook computer, and no matter thief wants to steal computer or attempt to remove this vibration transducer, all can trigger vibration transducer action, and then trigger alarm circuit working, send alerting signal, reach antitheft object, there is better anti-theft effect.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of warning system for burglary prevention of laptop of the present utility model, the conversion of involving vibrations sensor B, electric signal and amplifying circuit, control circuit power supply VCC, astable multivibrator and alarming horn BL; Described vibration transducer B is connected with the input end of amplifying circuit with electric signal conversion, the conversion of this electric signal is connected with amplifying circuit and astable multivibrator, the output terminal of astable multivibrator connects alarming horn BL, and described control circuit power supply VCC is that whole system is powered.
Further, described electric signal conversion comprises triode VT, resistance R1, R2, R3, R4, swept resistance RP, electric capacity C1, C2, C3 and time-base integrated circuit IC1 with amplifying circuit, the base stage of triode VT is connected with one end of swept resistance RP with vibration transducer B respectively, the other end ground connection of vibration transducer B, the other end of swept resistance RP respectively with resistance R1, R2, one end of R4, 4th pin of time-base integrated circuit IC1 and control circuit power supply VCC are connected, the other end of resistance R1 is connected with the sliding end of swept resistance RP, the other end of resistance R2 is connected with the collector of triode VT, the collector of this triode VT also connects the 2nd pin of time-base integrated circuit IC1 by electric capacity C1, the other end of resistance R4 is then connected with the 7th pin with the 6th pin of time-base integrated circuit IC1, described 6th pin and the 7th pin are by electric capacity C3 ground connection, the 1st pin ground connection of this time-base integrated circuit IC1, the emitter of triode VT is through resistance R3 ground connection, and described electric capacity C2 is parallel to the two ends of resistance R3.
Further, described astable multivibrator comprises time-base integrated circuit IC2, resistance R5, R6, electric capacity C4 and electrochemical capacitor C5; 4th pin of time-base integrated circuit IC2 is connected with the 3rd pin of time-base integrated circuit IC1,7th pin of this time-base integrated circuit IC2 separates two-way, one tunnel is connected with the 4th pin of time-base integrated circuit IC1 through resistance R5, another road is connected with the 6th pin with the 2nd pin of time-base integrated circuit IC2 through resistance R6, and the 2nd pin and the 6th pin are also by electric capacity C4 ground connection; 3rd pin of time-base integrated circuit IC2 is connected with the positive pole of electrochemical capacitor C5, the negative pole of electrochemical capacitor C5 connects the positive pole of alarming horn BL, 1st pin of time-base integrated circuit IC2, the equal ground connection of negative pole of alarming horn BL, the 8th pin connection control circuit power supply VCC of time-base integrated circuit IC2.
Further, described control circuit power supply VCC is 12V direct supply.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with existing known technology, has following beneficial effect:
(1) a kind of warning system for burglary prevention of laptop of the present utility model, comparatively shelter is installed by vibration transducer at notebook computer, no matter thief wants to steal computer or attempt to remove this vibration transducer, vibration transducer action is triggered in capital, and then trigger alarm circuit working, send alerting signal, reach antitheft object, there is better anti-theft effect;
(2) a kind of warning system for burglary prevention of laptop of the present utility model, battery is adopted to power to whole system, as long as install battery, this warning system is just in starting state, without the need to manually opened anti-theft feature, as long as notebook computer is moved i.e. alert trigger, timely prompting people notebook is moved by people, and meanwhile, audible alarm also allows thief panic, abandon notebook and run away, the property of people is not suffered a loss;
(3) a kind of warning system for burglary prevention of laptop of the present utility model, circuit structure is simple, low cost of manufacture, controls highly sensitive, easy to utilize.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of warning system for burglary prevention of laptop of the present utility model.
Embodiment
For understanding content of the present utility model further, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
Composition graphs 1, a kind of warning system for burglary prevention of laptop of the present embodiment, the conversion of involving vibrations sensor B, electric signal and amplifying circuit, control circuit power supply VCC, astable multivibrator and alarming horn BL; Described vibration transducer B is connected with the input end of amplifying circuit with electric signal conversion, the conversion of this electric signal is connected with amplifying circuit and astable multivibrator, the output terminal of astable multivibrator connects alarming horn BL, and described control circuit power supply VCC is that whole system is powered.
The present embodiment comparatively installs vibration transducer in shelter at notebook computer, and no matter thief wants to steal computer or attempt to remove this vibration transducer, all can trigger vibration transducer action, and then trigger alarm circuit working, send alerting signal, reach antitheft object, there is better anti-theft effect.Analyze below in conjunction with the burglar alarm principle of physical circuit to the present embodiment:
The electric signal conversion of the present embodiment comprises triode VT, resistance R1, R2, R3, R4, swept resistance RP, electric capacity C1, C2, C3 and time-base integrated circuit IC1 with amplifying circuit, the base stage of triode VT is connected with one end of swept resistance RP with vibration transducer B respectively, the other end ground connection of vibration transducer B, the other end of swept resistance RP respectively with resistance R1, R2, one end of R4, 4th pin of time-base integrated circuit IC1 and control circuit power supply VCC are connected, the other end of resistance R1 is connected with the sliding end of swept resistance RP, the other end of resistance R2 is connected with the collector of triode VT, the collector of this triode VT also connects the 2nd pin of time-base integrated circuit IC1 by electric capacity C1, the other end of resistance R4 is then connected with the 7th pin with the 6th pin of time-base integrated circuit IC1, described 6th pin and the 7th pin are by electric capacity C3 ground connection, the 1st pin ground connection of this time-base integrated circuit IC1, the emitter of triode VT is through resistance R3 ground connection, and described electric capacity C2 is parallel to the two ends of resistance R3.
Described astable multivibrator comprises time-base integrated circuit IC2, resistance R5, R6, electric capacity C4 and electrochemical capacitor C5; 4th pin of time-base integrated circuit IC2 is connected with the 3rd pin of time-base integrated circuit IC1,7th pin of this time-base integrated circuit IC2 separates two-way, one tunnel is connected with the 4th pin of time-base integrated circuit IC1 through resistance R5, another road is connected with the 6th pin with the 2nd pin of time-base integrated circuit IC2 through resistance R6, and the 2nd pin and the 6th pin are also by electric capacity C4 ground connection; 3rd pin of time-base integrated circuit IC2 is connected with the positive pole of electrochemical capacitor C5, the negative pole of electrochemical capacitor C5 connects the positive pole of alarming horn BL, 1st pin of time-base integrated circuit IC2, the equal ground connection of negative pole of alarming horn BL, the 8th pin connection control circuit power supply VCC of time-base integrated circuit IC2.
In the present embodiment, the model of time-base integrated circuit IC1 and time-base integrated circuit IC2 is NE555, and control circuit power supply VCC then adopts the direct supply (i.e. dry cell) of 12V.The resistance of resistance R1, R2, R3, R4, R5, R6 is respectively 100K, 60K, 25K, 1M, 100K and 100K.The capacity of electric capacity C1, C2, C3, C4 is respectively 1.1 μ F, 10 μ F, 100 μ F and 1.1 μ F.The capacity of electrochemical capacitor C5 is 10 μ F.
The course of work of the present embodiment is: when notebook computer be fixed position motionless time, vibration transducer B does not work, when notebook computer is moved, vibration transducer B can produce certain vibration, the vibration transducer B be now arranged on notebook computer works, produce electric signal and amplification through triode VT exports, add to the 2nd pin of time-base integrated circuit IC1, and then make the output terminal (the 3rd pin) of time-base integrated circuit IC1 by low transition to high level; Because the 3rd pin of base integrated circuit (IC) 1 is connected with the 4th pin of time-base integrated circuit IC2, high level signal enters the 4th pin of time-base integrated circuit IC2, and astable multivibrator is switched on, and alarming horn BL starts working.
A kind of warning system for burglary prevention of laptop of the present embodiment, battery is adopted to power to whole system, as long as install battery, this warning system is just in starting state, without the need to manually opened anti-theft feature, as long as notebook computer is moved i.e. alert trigger, timely prompting people notebook is moved by people, and meanwhile, audible alarm also allows thief panic, abandon notebook and run away, the property of people is not suffered a loss.In addition, the circuit structure of the present embodiment is simple, low cost of manufacture, controls highly sensitive, easy to utilize.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (4)
1. for a warning system for burglary prevention of laptop, it is characterized in that: the conversion of involving vibrations sensor B, electric signal and amplifying circuit, control circuit power supply VCC, astable multivibrator and alarming horn BL; Described vibration transducer B is connected with the input end of amplifying circuit with electric signal conversion, the conversion of this electric signal is connected with amplifying circuit and astable multivibrator, the output terminal of astable multivibrator connects alarming horn BL, and described control circuit power supply VCC is that whole system is powered.
2. a kind of warning system for burglary prevention of laptop according to claim 1, it is characterized in that: described electric signal conversion comprises triode VT with amplifying circuit, resistance R1, R2, R3, R4, swept resistance RP, electric capacity C1, C2, C3 and time-base integrated circuit IC1, the base stage of triode VT is connected with one end of swept resistance RP with vibration transducer B respectively, the other end ground connection of vibration transducer B, the other end of swept resistance RP respectively with resistance R1, R2, one end of R4, 4th pin of time-base integrated circuit IC1 and control circuit power supply VCC are connected, the other end of resistance R1 is connected with the sliding end of swept resistance RP, the other end of resistance R2 is connected with the collector of triode VT, the collector of this triode VT also connects the 2nd pin of time-base integrated circuit IC1 by electric capacity C1, the other end of resistance R4 is then connected with the 7th pin with the 6th pin of time-base integrated circuit IC1, described 6th pin and the 7th pin are by electric capacity C3 ground connection, the 1st pin ground connection of this time-base integrated circuit IC1, the emitter of triode VT is through resistance R3 ground connection, and described electric capacity C2 is parallel to the two ends of resistance R3.
3. a kind of warning system for burglary prevention of laptop according to claim 2, is characterized in that: described astable multivibrator comprises time-base integrated circuit IC2, resistance R5, R6, electric capacity C4 and electrochemical capacitor C5; 4th pin of time-base integrated circuit IC2 is connected with the 3rd pin of time-base integrated circuit IC1,7th pin of this time-base integrated circuit IC2 separates two-way, one tunnel is connected with the 4th pin of time-base integrated circuit IC1 through resistance R5, another road is connected with the 6th pin with the 2nd pin of time-base integrated circuit IC2 through resistance R6, and the 2nd pin and the 6th pin are also by electric capacity C4 ground connection; 3rd pin of time-base integrated circuit IC2 is connected with the positive pole of electrochemical capacitor C5, the negative pole of electrochemical capacitor C5 connects the positive pole of alarming horn BL, 1st pin of time-base integrated circuit IC2, the equal ground connection of negative pole of alarming horn BL, the 8th pin connection control circuit power supply VCC of time-base integrated circuit IC2.
4. a kind of warning system for burglary prevention of laptop according to claim 3, is characterized in that: described control circuit power supply VCC is 12V direct supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258372.4U CN204515953U (en) | 2015-04-24 | 2015-04-24 | A kind of warning system for burglary prevention of laptop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258372.4U CN204515953U (en) | 2015-04-24 | 2015-04-24 | A kind of warning system for burglary prevention of laptop |
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| Publication Number | Publication Date |
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| CN204515953U true CN204515953U (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520258372.4U Expired - Fee Related CN204515953U (en) | 2015-04-24 | 2015-04-24 | A kind of warning system for burglary prevention of laptop |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113536400A (en) * | 2021-07-16 | 2021-10-22 | 深圳市智微智能科技股份有限公司 | Automatic protection circuit |
-
2015
- 2015-04-24 CN CN201520258372.4U patent/CN204515953U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113536400A (en) * | 2021-07-16 | 2021-10-22 | 深圳市智微智能科技股份有限公司 | Automatic protection circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20160424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |