CN203746192U - Laptop anti-theft alarm - Google Patents
Laptop anti-theft alarm Download PDFInfo
- Publication number
- CN203746192U CN203746192U CN201420135534.0U CN201420135534U CN203746192U CN 203746192 U CN203746192 U CN 203746192U CN 201420135534 U CN201420135534 U CN 201420135534U CN 203746192 U CN203746192 U CN 203746192U
- Authority
- CN
- China
- Prior art keywords
- resistance
- pin
- connects
- circuit
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model provides a laptop anti-theft alarm, belongs to the field of computers, and aims at solving problems that an anti-theft starting switch is arranged on a laptop body and is liable to be released by a thief. The laptop anti-theft alarm comprises a mercury switch K1, a switch signal transmitting circuit, a switch signal receiving circuit, an inclination trigger circuit, an astable multi-vibrator and an alarm horn BL. The mercury switch K1 is internally provided with a pair of normally-open contacts. The inclination signal output end of the mercury switch K1 is connected with the inclination signal input end of the inclination trigger circuit. The alarm trigger signal output end of the inclination trigger circuit is connected with the alarm trigger signal input end of the astable multi-vibrator. The alarm instruction output end of the astable multi-vibrator is connected with the enabling end of the alarm horn BL. The switch signal transmitting circuit transmits an alarm function switch instruction. The switch signal receiving circuit receives the alarm function switch instruction. The alarm function switch instruction output end of the switch signal receiving circuit is connected with the alarm function switch instruction control end of the inclination trigger circuit.
Description
Technical field
The utility model relates to a kind of burglar alarm, belongs to computer realm.
Background technology
People, for ease of the mobile environment for use such as going on business, often select notebook computer, and notebook computer is than the superiority of desktop computer, can arbitrarily change environment for use, volume is small and exquisite, is easy to carry, because notebook has portable advantage, it is high that its cost ratio desktop computer is wanted.
Notebook has benefit easy to carry, but simultaneously also because its volume is small and exquisite and easily stolen, the existing anti-theft technique for desktop computer is relatively ripe, because fixing desktop computer position, anti-theft device designs, installs well, warning starting switch can be arranged on concealed location, and it is relatively blank for the anti-theft technique of notebook, can not apply mechanically the burglar alarm of desktop computer, because not fixing the position of notebook, warning starting switch can only be arranged on the fuselage of notebook, but arranges easily and found by thief like this, and easily remove to report to the police, arranges.Existing notebook leans on people's subjectivity to go to keep an eye on next antitheft substantially.
Summary of the invention
The utility model object is to be arranged in order to solve antitheft starting switch the problem of easily being removed by thief on notebook fuselage, and a kind of burglary prevention of laptop alarm is provided.
Burglary prevention of laptop alarm described in the utility model, it comprises silver-colored K switch 1, switching signal radiating circuit, switching signal receiving circuit, inclination trigger circuit, astable multivibrator and alarming horn BL;
A pair of normally opened contact is set in mercury cut-off K1, and the tilt signals output terminal of mercury cut-off K1 is connected with the tilt signals input end of inclination trigger circuit; 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.
Advantage of the present utility model: simple in structure, after opening anti-theft function, as long as notebook is moved, be trigger alarm, remind in time people that notebook is moved by people, simultaneously, audible alarm also allows thief panic, abandons notebook and runs away, and people's finance are not suffered a loss.
The utility model burglar alarm adopts telecontrol engineering opening anti-theft function, and antitheft starting switch is not arranged on the fuselage of notebook, and like this, thief just can not find to close the warning starting switch of alarm on notebook, antitheft more efficiently.
Accompanying drawing explanation
Fig. 1 is the theory diagram of burglary prevention of laptop alarm described in the utility model;
Fig. 2 is the physical circuit figure of burglary prevention of laptop alarm described in the utility model;
Fig. 3 is the physical circuit figure of switching signal radiating circuit;
Fig. 4 is the physical circuit figure of switching signal receiving circuit.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 to Fig. 4, burglary prevention of laptop alarm described in present embodiment, it comprises mercury cut-off K1, switching signal radiating circuit 1, switching signal receiving circuit 2, inclination trigger circuit 3, astable multivibrator 4 and alarming horn BL;
A pair of normally opened contact is set in mercury cut-off K1, and the tilt signals output terminal of mercury cut-off K1 is connected with the tilt signals input end of inclination trigger circuit 3; The warning trigger pip output terminal of inclination trigger circuit 3 is connected with the warning trigger pip input end of astable multivibrator 4; The alarm command output terminal of astable multivibrator 4 is connected with the Enable Pin of alarming horn BL;
Switching signal radiating circuit 1 sends warning function switch order, and switching signal receiving circuit 2 receives this warning function switch order; The warning function switch order output terminal of switching signal receiving circuit 2 is connected with the warning function switch order control end of inclination trigger circuit 3.
Referring to Fig. 2, inclination trigger circuit 3 comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, electrochemical capacitor C1, NPN triode VT1 and PNP triode VT2;
Between the end points b of switching signal receiving circuit 2 and end points c, form equivalent switch K2,
The end points b connection+5V power supply of equivalent switch K2; The end points c of equivalent switch K2 connects the emitter of positive pole, one end of mercury cut-off K1 normally opened contact, one end of resistance R 3 and the PNP triode VT2 of electrochemical capacitor C1 simultaneously;
One end of the other end contact resistance R1 of mercury cut-off K1 normally opened contact, the other end of resistance R 1 is one end, one end of resistance R 2 and the base stage of NPN triode VT1 of contact resistance R5 simultaneously, one end of the collector contact resistance R4 of NPN triode VT1, the other end of the other end while contact resistance R3 of resistance R 4 and the base stage of PNP triode VT2, the other end of the collector contact resistance R5 of PNP triode VT2; The collector of PNP triode VT2 is as the alarm command output terminal of inclination trigger circuit 3 simultaneously;
The grounded emitter of the other end of the negative pole of electrochemical capacitor C1, resistance R 2 and PNP triode VT2.
Referring to Fig. 2, astable multivibrator 4 comprises NE555 time-base integrated circuit IC1, resistance R 6, resistance R 7, capacitor C 2, capacitor C 3 and electrochemical capacitor C4;
One end of the warning trigger pip output terminal while contact resistance R6 of inclination trigger circuit 3,4 pin and 8 pin of NE555 time-base integrated circuit IC1;
The other end of resistance R 6 connects 7 pin of NE555 time-base integrated circuit IC1 and one end of resistance R 7 simultaneously, and the other end of resistance R 7 connects one end of 2 pin, 6 pin and the capacitor C 2 of NE555 time-base integrated circuit IC1 simultaneously;
5 pin of NE555 time-base integrated circuit IC1 connect one end of capacitor C 3;
3 pin of NE555 time-base integrated circuit IC1 connect the positive pole of electrochemical capacitor C4, and the negative pole of electrochemical capacitor C4 connects the positive terminal of alarming horn BL;
1 pin of the other end of the negative pole end of alarming horn BL, capacitor C 3, NE555 time-base integrated circuit IC1 and the other end ground connection of capacitor C 2.
Referring to Fig. 3, switching signal radiating circuit 1 is arranged in telepilot, and switching signal radiating circuit 1 comprises NE5555 time-base integrated circuit IC2, RCM-1A wireless transmit chip, resistance R 8, resistance R 9, resistance R 10, diode D1, diode D2, capacitor C 5, slide rheostat Rp and power supply of remote controller K switch 3;
+ 5V power supply connects one end of power supply of remote controller K switch 3, and the other end of power supply of remote controller K switch 3 connects one end of 4 pin, 8 pin and the resistance R 8 of NE5555 time-base integrated circuit IC2 simultaneously;
The other end of resistance R 8 connects the anode of diode D1 simultaneously, 7 pin of one end of resistance R 9 and NE5555 time-base integrated circuit IC2;
The negative electrode of diode D1 connects a stiff end of slide rheostat Rp; Another stiff end of slide rheostat Rp connects the anode of diode D2, the other end of the negative electrode contact resistance R9 of diode D2;
One end of the sliding end contact resistance R10 of slide rheostat Rp, the other end of resistance R 10 connects one end of 2 pin, 6 pin and the capacitor C 5 of NE5555 time-base integrated circuit IC2 simultaneously;
2 pin of 1 pin of the other end of capacitor C 5, NE5555 time-base integrated circuit IC2 and RCM-1A wireless transmit chip are ground connection simultaneously;
1 pin of RCM-1A wireless transmit chip is connected with 3 pin of NE5555 time-base integrated circuit IC2;
Referring to Fig. 4, switching signal receiving circuit 2 comprises RCM-1B wireless receiving chip, solid-state relay TLP3502, resistance R 11, resistance R 12, resistance R 13, resistance R 14, electrochemical capacitor C6, electrochemical capacitor C7, NPN triode VT3, voltage stabilizing diode Dw1, voltage stabilizing diode Dw2 and bidirectional thyristor VTH;
5 pin of RCM-1B wireless receiving chip connect the negative pole of electrochemical capacitor C6 simultaneously, the anode of the anode of voltage stabilizing diode Dw1, voltage stabilizing diode Dw2 and the negative pole of electrochemical capacitor C7;
1 pin of RCM-1B wireless receiving chip connects one end of the positive pole of electrochemical capacitor C6, the negative electrode of voltage stabilizing diode Dw1 and resistance R 11 simultaneously; The other end of resistance R 11 connects the negative electrode of voltage stabilizing diode Dw2 simultaneously, one end of the positive pole of electrochemical capacitor C7, resistance R 12 and the trigger pip electrode input end of solid-state relay TLP3502;
The other end of resistance R 12 connects power supply+5V and end points b;
One end of 2 pin contact resistance R13 of RCM-1B wireless receiving chip, the other end of resistance R 13 connects the base stage of NPN triode VT3, and the collector of NPN triode VT3 connects the trigger pip negative input of solid-state relay TLP3502; The emitter of NPN triode VT3 connects one end of bidirectional thyristor VTH;
One end of the driving signal cathode output end contact resistance R14 of solid-state relay TLP3502, the other end of resistance R 14 connects the other end and the end points c of bidirectional thyristor VTH simultaneously;
The driving signal cathode output end of solid-state relay TLP3502 connects the trigger end of bidirectional thyristor VTH.
Principle of work: switching signal radiating circuit 1 is arranged in telepilot, power supply of remote controller K switch 3 is responsible for the switch of telepilot, NE5555 time-base integrated circuit IC2 and peripheral cell form oscillator, regulate slide rheostat Rp can change the pulse duty factor of RCM-1A wireless transmit chip output, the effective control distance of oscillator signal is 8～15m.
When switching signal receiving circuit 2 receives this oscillator signal, 2 pin output high level of RCM-1B wireless receiving chip, while not receiving oscillator signal, 2 pin output low levels of RCM-1B wireless receiving chip, and then the break-make of control solid-state relay TLP3502, control whether to bidirectional thyristor VTH trigger pip, have trigger pip, bidirectional thyristor VTH conducting, has electric current to pass through between end points b and c, be equivalent to equivalent switch K2 closed, the circuit of Fig. 2 switches on power, and as now, notebook is moved, mercury cut-off K1 is closed, trigger alarm.NE555 time-base integrated circuit IC1, resistance R 6, resistance R 7 and capacitor C 2 form astable multivibrator 4, and the power supply of this astable multivibrator 4 is controlled by PNP triode VT2.And whether PNP triode VT2 conducting depends on the position of mercury cut-off K1, when occurring tilting when notebook is moved or shaking, mercury in mercury cut-off K1 is by the short circuit of two electrode overlap joints, the base stage of NPN triode VT1 is added with bias voltage, conducting, thereby PNP triode VT2 saturation conduction, astable multivibrator 4 work, the 3 pin high level of NE555 time-base integrated circuit IC1, the audible alarm of alarming horn BL high frequency, alarming horn BL can select piezoelectricity loudspeaker.
Claims (4)
1. burglary prevention of laptop alarm, it is characterized in that, it comprises mercury cut-off K1, switching signal radiating circuit (1), switching signal receiving circuit (2), inclination trigger circuit (3), astable multivibrator (4) and alarming horn BL;
A pair of normally opened contact is set in mercury cut-off K1, and the tilt signals output terminal of mercury cut-off K1 is connected with the tilt signals input end of inclination trigger circuit (3); The warning trigger pip output terminal of inclination trigger circuit (3) is connected with the warning trigger pip input end of astable multivibrator (4); The alarm command output terminal of astable multivibrator (4) is connected with the Enable Pin of alarming horn BL;
Switching signal radiating circuit (1) sends warning function switch order, and switching signal receiving circuit (2) receives this warning function switch order; The warning function switch order output terminal of switching signal receiving circuit (2) is connected with the warning function switch order control end of inclination trigger circuit (3).
2. burglary prevention of laptop alarm according to claim 1, is characterized in that, inclination trigger circuit (3) comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, electrochemical capacitor C1, NPN triode VT1 and PNP triode VT2;
Between the end points b of switching signal receiving circuit (2) and end points c, form equivalent switch K2,
The end points b connection+5V power supply of equivalent switch K2; The end points c of equivalent switch K2 connects the emitter of positive pole, one end of mercury cut-off K1 normally opened contact, one end of resistance R 3 and the PNP triode VT2 of electrochemical capacitor C1 simultaneously;
One end of the other end contact resistance R1 of mercury cut-off K1 normally opened contact, the other end of resistance R 1 is one end, one end of resistance R 2 and the base stage of NPN triode VT1 of contact resistance R5 simultaneously, one end of the collector contact resistance R4 of NPN triode VT1, the other end of the other end while contact resistance R3 of resistance R 4 and the base stage of PNP triode VT2, the other end of the collector contact resistance R5 of PNP triode VT2; The collector of PNP triode VT2 is as the alarm command output terminal of inclination trigger circuit (3) simultaneously;
The grounded emitter of the other end of the negative pole of electrochemical capacitor C1, resistance R 2 and PNP triode VT2.
3. burglary prevention of laptop alarm according to claim 2, is characterized in that, astable multivibrator (4) comprises NE555 time-base integrated circuit IC1, resistance R 6, resistance R 7, capacitor C 2, capacitor C 3 and electrochemical capacitor C4;
One end of the warning trigger pip output terminal while contact resistance R6 of inclination trigger circuit (3), 4 pin and 8 pin of NE555 time-base integrated circuit IC1;
The other end of resistance R 6 connects 7 pin of NE555 time-base integrated circuit IC1 and one end of resistance R 7 simultaneously, and the other end of resistance R 7 connects one end of 2 pin, 6 pin and the capacitor C 2 of NE555 time-base integrated circuit IC1 simultaneously;
5 pin of NE555 time-base integrated circuit IC1 connect one end of capacitor C 3;
3 pin of NE555 time-base integrated circuit IC1 connect the positive pole of electrochemical capacitor C4, and the negative pole of electrochemical capacitor C4 connects the positive terminal of alarming horn BL;
1 pin of the other end of the negative pole end of alarming horn BL, capacitor C 3, NE555 time-base integrated circuit IC1 and the other end ground connection of capacitor C 2.
4. burglary prevention of laptop alarm according to claim 2, it is characterized in that, switching signal radiating circuit (1) is arranged in telepilot, and switching signal radiating circuit (1) comprises NE5555 time-base integrated circuit IC2, RCM-1A wireless transmit chip, resistance R 8, resistance R 9, resistance R 10, diode D1, diode D2, capacitor C 5, slide rheostat Rp and power supply of remote controller K switch 3;
+ 5V power supply connects one end of power supply of remote controller K switch 3, and the other end of power supply of remote controller K switch 3 connects one end of 4 pin, 8 pin and the resistance R 8 of NE5555 time-base integrated circuit IC2 simultaneously;
The other end of resistance R 8 connects the anode of diode D1 simultaneously, 7 pin of one end of resistance R 9 and NE5555 time-base integrated circuit IC2;
The negative electrode of diode D1 connects a stiff end of slide rheostat Rp; Another stiff end of slide rheostat Rp connects the anode of diode D2, the other end of the negative electrode contact resistance R9 of diode D2;
One end of the sliding end contact resistance R10 of slide rheostat Rp, the other end of resistance R 10 connects one end of 2 pin, 6 pin and the capacitor C 5 of NE5555 time-base integrated circuit IC2 simultaneously;
2 pin of 1 pin of the other end of capacitor C 5, NE5555 time-base integrated circuit IC2 and RCM-1A wireless transmit chip are ground connection simultaneously;
1 pin of RCM-1A wireless transmit chip is connected with 3 pin of NE5555 time-base integrated circuit IC2;
Switching signal receiving circuit (2) comprises RCM-1B wireless receiving chip, solid-state relay TLP3502, resistance R 11, resistance R 12, resistance R 13, resistance R 14, electrochemical capacitor C6, electrochemical capacitor C7, NPN triode VT3, voltage stabilizing diode Dw1, voltage stabilizing diode Dw2 and bidirectional thyristor VTH;
5 pin of RCM-1B wireless receiving chip connect the negative pole of electrochemical capacitor C6 simultaneously, the anode of the anode of voltage stabilizing diode Dw1, voltage stabilizing diode Dw2 and the negative pole of electrochemical capacitor C7;
1 pin of RCM-1B wireless receiving chip connects one end of the positive pole of electrochemical capacitor C6, the negative electrode of voltage stabilizing diode Dw1 and resistance R 11 simultaneously; The other end of resistance R 11 connects the negative electrode of voltage stabilizing diode Dw2 simultaneously, one end of the positive pole of electrochemical capacitor C7, resistance R 12 and the trigger pip electrode input end of solid-state relay TLP3502;
The other end of resistance R 12 connects power supply+5V and end points b;
One end of 2 pin contact resistance R13 of RCM-1B wireless receiving chip, the other end of resistance R 13 connects the base stage of NPN triode VT3, and the collector of NPN triode VT3 connects the trigger pip negative input of solid-state relay TLP3502; The emitter of NPN triode VT3 connects one end of bidirectional thyristor VTH;
One end of the driving signal cathode output end contact resistance R14 of solid-state relay TLP3502, the other end of resistance R 14 connects the other end and the end points c of bidirectional thyristor VTH simultaneously;
The driving signal cathode output end of solid-state relay TLP3502 connects the trigger end of bidirectional thyristor VTH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135534.0U CN203746192U (en) | 2014-03-25 | 2014-03-25 | Laptop anti-theft alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135534.0U CN203746192U (en) | 2014-03-25 | 2014-03-25 | Laptop anti-theft alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203746192U true CN203746192U (en) | 2014-07-30 |
Family
ID=51345965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135534.0U Expired - Fee Related CN203746192U (en) | 2014-03-25 | 2014-03-25 | Laptop anti-theft alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203746192U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534886A (en) * | 2018-03-09 | 2018-09-14 | 深圳市晟瑞科技有限公司 | A kind of vibrating sensor and intelligence control system |
-
2014
- 2014-03-25 CN CN201420135534.0U patent/CN203746192U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534886A (en) * | 2018-03-09 | 2018-09-14 | 深圳市晟瑞科技有限公司 | A kind of vibrating sensor and intelligence control system |
| CN108534886B (en) * | 2018-03-09 | 2024-02-23 | 深圳市晟瑞科技有限公司 | Vibration sensor and intelligent control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105185056A (en) | Anti-lost device based on positioning module | |
| CN203290347U (en) | Key pendant with a Bluetooth module | |
| CN102929268A (en) | Self checking implementation method of vehicle-mounted remote monitoring terminal | |
| CN207697881U (en) | A kind of electric vehicle anti-theft device | |
| CN203746192U (en) | Laptop anti-theft alarm | |
| CN204537414U (en) | A kind of Multifunction computer network security warning device | |
| CN204515959U (en) | A kind of burglary prevention of laptop warning device | |
| CN203966269U (en) | Burglary prevention of laptop alarm | |
| CN204010206U (en) | Burglary prevention of laptop alarm | |
| CN104273906A (en) | Anti-lost computer bag | |
| CN202422330U (en) | Novel alarming burglarproof door | |
| CN204196852U (en) | A kind of automobile burglar tracker | |
| CN204695483U (en) | A kind of microwave anti-theft alarm | |
| CN103344965A (en) | Anti-lost positioning device | |
| CN204515960U (en) | A kind of infrared safety protection alarm circuit | |
| CN207200776U (en) | A kind of anti-lost system of mobile phone | |
| CN204833559U (en) | Warning circuit of lock theftproof in limited time | |
| CN203773654U (en) | Computer cabinet burglar prevention alarm device | |
| CN202033882U (en) | Wireless monitoring alarm | |
| CN203849824U (en) | Bluetooth anti-theft device | |
| CN204013625U (en) | Antitheft handset case | |
| CN204331949U (en) | A kind of Mobile phone burglar alarm | |
| CN202534086U (en) | Anti-theft device of transformer device | |
| CN205080696U (en) | Bluetooth anti -theft device | |
| CN203324475U (en) | Lost prevention positioning device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20160325 |