CN203135833U - Optical control anti-theft device - Google Patents
Optical control anti-theft device Download PDFInfo
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- CN203135833U CN203135833U CN 201320081378 CN201320081378U CN203135833U CN 203135833 U CN203135833 U CN 203135833U CN 201320081378 CN201320081378 CN 201320081378 CN 201320081378 U CN201320081378 U CN 201320081378U CN 203135833 U CN203135833 U CN 203135833U
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Abstract
The utility model discloses an optical control anti-theft device including a 12V DC power source, an A1 voltage comparator circuit and photosensitive circuit, an A4 voltage comparator circuit and reference voltage circuit, a charging and display delay circuit and a level amplifying and relay control circuit. The optical control anti-theft device is characterized in that the specification of an operational amplifier IC1 adopted in A1 voltage comparator circuit and photosensitive circuit is LM324. The optical control anti-theft device provided by the utility model employs the operational amplifier IC1 and a photosensitive resistor as core elements, so that the optical control anti-theft device can be used for simulating a condition that house owners are at home through switching on electric devices such as electric lamps, sound boxes and the like automatically after dark and then switching off power sources of the electric devices such as the electric lamps and the sound boxes automatically at a predetermined bedtime point when the house owners go out and nobody is at home to make thieves that come for scouting dare not act rashly. The strategy employed by the optical control anti-theft device is the empty fort strategy created by Zhuge Liang.
Description
Technical field
The utility model belongs to Electronic Control and technical field of security and protection, relates to a kind of light-controlled antitheft device.
Background technology
Light-controlled antitheft device described in the utility model can the layman be gone out, at night with night man in unmanned time marquis, this light-controlled antitheft device can be turned on electrical equipment such as electric light, unlatching sound equipment automatically after the darkness, to the predefined bedtime close the power supply of electric light and sound equipment again automatically, simulation has the be in situation of activity of people, the robber who comes to set foot-point dare not be acted rashly, as the empty-city stratagem of Zhuge Liang's design.
Light-controlled antitheft device described in the utility model uses operational amplifier IC1(LM324) and photo resistance as core parts, this light-controlled antitheft device has advantages such as circuit structure is simple and direct, the components and parts use amount is few, circuit performance reliable, the making development cost is low, easy to use, be easy to popularize.
Below describe light-controlled antitheft device described in the utility model related relevant technologies content in implementation process in detail.
The utility model content
Goal of the invention and beneficial effect: light-controlled antitheft device described in the utility model can the layman be gone out, at night with night man in unmanned time marquis, this light-controlled antitheft device can be turned on electrical equipment such as electric light, unlatching sound equipment automatically after the darkness, to the predefined bedtime close the power supply of electric light and sound equipment again automatically, simulation has the be in situation of activity of people, the robber who comes to set foot-point dare not be acted rashly, as the empty-city stratagem of Zhuge Liang's design.Light-controlled antitheft device described in the utility model uses operational amplifier IC1(LM324) and photo resistance as core parts, this light-controlled antitheft device has advantages such as circuit structure is simple and direct, the components and parts use amount is few, circuit performance reliable, the making development cost is low, easy to use, be easy to popularize.
The circuit working principle: operational amplifier IC1(LM324) inside is made up of four amplifier A1～A4, the utility model uses A1 and A4 wherein, A1 and A4 all are connected into voltage comparator among the operational amplifier IC1, the in-phase input end of A4 connects reference voltage, and reference voltage obtains the 9V dividing potential drop by resistance R 4, linear potentiometer RP.When connecting the 12V DC power supply by day, the resistance of photo resistance RG is very little, the 3rd pin current potential of operational amplifier IC1 is lower than the 2nd pin, the output output low level of A1, the output output high level that causes A4, simultaneously the output output low level of A1 makes positive-negative-positive triode VT1 conducting, and whether relay J work or not electrical equipment such as institute's electric light that connects by day.After the darkness, photo resistance RG resistance increases, and the voltage at its two ends raises, in-phase input end the 3rd pin voltage of A1 is higher than reverse input end the 2nd pin, the output of A1 output high level, the output output high level of A4 makes the relay J dead electricity, makes electrical equipment such as electric light get electric work.The high level of the output of A1 output simultaneously slowly charges to electrochemical capacitor C1 by resistance R 5, and the in-phase input end current potential of A4 slowly rises, and after 6～7 hours, the output of A4 transfers low level to by high level, and then all electrical equipment all quit work.After daybreak in second day, the output of A1 becomes low level again, positive-negative-positive triode VT1 conducting again, and electrical equipment all quits work, and A4 is by resistance R 5 and slowly discharge of operational amplifier IC1 itself by day.Electrochemical capacitor C1 discharge is longer slightly than the electrochemical capacitor C1 charging interval, and electrochemical capacitor C1 discharge off is that second day evening, task was ready again.
Technical scheme: a kind of light-controlled antitheft device comprises that 12V DC power supply, A1 voltage comparator circuit and photosensitive circuit, A4 voltage comparator circuit and reference voltage circuit, charge and discharge delay circuit, level amplify and control relay circuit, is characterized in that:
A1 voltage comparator circuit and photosensitive circuit are made up of operational amplifier IC1, resistance R 1, resistance R 2, resistance R 3 and photo resistance RG, the model that operational amplifier IC1 adopts is LM324, the end of the 2nd pin connecting resistance R1 of operational amplifier IC1 and an end of resistance R 2, the end of the 3rd pin connecting resistance R3 of operational amplifier IC1 and the end of photo resistance RG; The anodal VCC of the other end connection circuit of the other end of resistance R 1 and resistance R 3, the other end connection circuit ground GND of the other end of resistance R 2 and photo resistance RG, the 1st pin of operational amplifier IC1 connects level signal amplifying circuit and charge and discharge delay circuit;
A4 voltage comparator circuit and reference voltage circuit are made up of operational amplifier IC1, resistance R 4 and linear potentiometer RP, the 12nd pin of the termination operational amplifier IC1 of one end of resistance R 4 and linear potentiometer RP, the anodal VCC of the 4th pin connection circuit of the other end of resistance R 4 and operational amplifier IC1, the 11st pin connection circuit ground GND of the other end of linear potentiometer RP and movable end thereof and operational amplifier IC1, the 13rd pin of operational amplifier IC1 connects the charge and discharge delay circuit;
The charge and discharge delay circuit is made up of resistance R 5 and electrochemical capacitor C1, the 1st pin of one termination operational amplifier IC1 of resistance R 5, the 13rd pin of another termination operational amplifier IC1 of resistance R 5 and the positive pole of electrochemical capacitor C1, the negative pole connection circuit ground GND of electrochemical capacitor C1;
The 1st pin of operational amplifier IC1 in level signal amplification and the control relay circuit connects the base stage of positive-negative-positive triode VT1 by resistance R 6, the 14th pin of operational amplifier IC1 connects emitter and the end of direct current relay J and the positive pole of switching diode D1 of positive-negative-positive triode VT1 by resistance R 7, the anodal VCC of the negative pole connection circuit of the other end of direct current relay J and switching diode D1, the collector electrode utmost point connection circuit ground GND of positive-negative-positive triode VT1;
The 12V dc power anode links to each other with circuit anode VCC, and the 12V dc power cathode links to each other with circuit ground GND.
Description of drawings
Accompanying drawing 1 is an embodiment circuit working of the light-controlled antitheft device schematic diagram that the utility model provides.
Embodiment
According to light-controlled antitheft device circuit fundamental diagram and the description of drawings shown in the accompanying drawing 1, and according to annexation between the components and parts in the described each several part circuit of utility model content, and the components and parts technical parameter described in the execution mode requires and the circuit production main points are implemented to realize the utility model, below in conjunction with embodiment correlation technique of the present utility model is further described.
The parameter of components and parts and selection
The model that operational amplifier IC1 recommends to use is LM324, it is by four groups of circuit of forming of operational amplifier independently, and present embodiment has only been used two among four groups of operational amplifier LM324, that is: A1 and A4; The LM324 integrated circuit be encapsulated as dual inline type, its 14 pins and function are:
1 pin OUTPUT 1,2 pin INPUT 1-, 3 pin INPUT 1+; 4 pin connect the positive pole (VCC) of power supply;
5 pin INPUT 2+, 6 pin INPUT 2-, 7 pin OUTPUT 2; 8 pin OUTPUT 3,9 pin INPUT 3-, 10 pin INPUT 3+; 11 pin connection circuit ground (GND), that is: the negative poles of DC power supply; 12 pin INPUT 4+, 13 pin INPUT 4-, 14 pin OUTPUT 4; OUTPUT is the output of operational amplifier; INPUT+ is the positive input of operational amplifier; INPUT-is the reverse input end of operational amplifier.
Components and parts title and important technological parameters
| Element number haoHAO number | The components and parts title | Model or technical parameter | Quantity | Explanation | |
| IC1 | Operational amplifier | Dual-in-line, |
1 | Model: LM324 | |
| VT1 | The positive-negative-positive triode | 2SC9015 | 1 | Plastic packaging | |
| RP | | 62KΩ | 1 | ||
| RG | Photo resistance | MG45 | 1 | ||
| D1 | | 1N4148 | 1 | Be used for circuit | |
| R1 | Resistance | ||||
| 1/8W、 |
1 | Metalfilmresistor | |||
| | Resistance | 1/8W、1MΩ | 1 | Metalfilmresistor | |
| R3 | Resistance | 1/8W、1MΩ | 1 | Metalfilmresistor | |
| R4 | Resistance | 1/8W、18KΩ | 1 | Metalfilmresistor | |
| R5 | Resistance | 1/8W、3.3MΩ | 1 | Metalfilmresistor | |
| R6 | Resistance | 1/8W、3.9 |
1 | Metalfilmresistor | |
| R7 | Resistance | 1/8W、1.2 |
1 | Metalfilmresistor | |
| C1 | Electrochemical capacitor | 4700μF/ |
1 | Vertical | |
| J | Direct current relay | Coil resistance 800 Ω, |
1 | Use normally-closed contact |
Circuit production main points, circuit debugging and using method
1. fairly simple because of the circuit structure of light-controlled antitheft device, as long as the electronic devices and components performance of selecting for use generally speaking is intact, and the components and parts annexation in the accompanying drawing 1 is welded to specifications, after physical connection line and welding quality were correct through scrutiny, circuit of the present utility model did not need to carry out any debugging substantially and gets final product operate as normal;
2. adjust the resistance of resistance R 1, can change the zero-time of electrical equipment work at night, adjust the length that linear potentiometer RP can change electrical equipment such as electric light the operating times in the evening; When linear potentiometer RP is transferred to maximum, worked approximately 6～7 hours, when linear potentiometer RP was transferred to minimum value, casual labourer was tens seconds as the time;
3. direct current relay J must use normally-closed contact, otherwise the course of work of electrical equipment such as electric light is opposite;
4. note: photo resistance RG will be mounted on outdoor by lead, in order to avoid light causes misoperation.
Claims (1)
1. light-controlled antitheft device, it comprises that 12V DC power supply, A1 voltage comparator circuit and photosensitive circuit, A4 voltage comparator circuit and reference voltage circuit, charge and discharge delay circuit, level amplify and control relay circuit, is characterized in that:
Described A1 voltage comparator circuit and photosensitive circuit are made up of operational amplifier IC1, resistance R 1, resistance R 2, resistance R 3 and photo resistance RG, the model that operational amplifier IC1 adopts is LM324, the end of the 2nd pin connecting resistance R1 of operational amplifier IC1 and an end of resistance R 2, the end of the 3rd pin connecting resistance R3 of operational amplifier IC1 and the end of photo resistance RG; The anodal VCC of the other end connection circuit of the other end of resistance R 1 and resistance R 3, the other end connection circuit ground GND of the other end of resistance R 2 and photo resistance RG, the 1st pin of operational amplifier IC1 connects level signal amplifying circuit and charge and discharge delay circuit;
Described A4 voltage comparator circuit and reference voltage circuit are made up of operational amplifier IC1, resistance R 4 and linear potentiometer RP, the 12nd pin of the termination operational amplifier IC1 of one end of resistance R 4 and linear potentiometer RP, the anodal VCC of the 4th pin connection circuit of the other end of resistance R 4 and operational amplifier IC1, the 11st pin connection circuit ground GND of the other end of linear potentiometer RP and movable end thereof and operational amplifier IC1, the 13rd pin of operational amplifier IC1 connects the charge and discharge delay circuit;
Described charge and discharge delay circuit is made up of resistance R 5 and electrochemical capacitor C1, the 1st pin of one termination operational amplifier IC1 of resistance R 5, the 13rd pin of another termination operational amplifier IC1 of resistance R 5 and the positive pole of electrochemical capacitor C1, the negative pole connection circuit ground GND of electrochemical capacitor C1;
The 1st pin of operational amplifier IC1 in described level signal amplification and the control relay circuit connects the base stage of positive-negative-positive triode VT1 by resistance R 6, the 14th pin of operational amplifier IC1 connects emitter and the end of direct current relay J and the positive pole of switching diode D1 of positive-negative-positive triode VT1 by resistance R 7, the anodal VCC of the negative pole connection circuit of the other end of direct current relay J and switching diode D1, the collector electrode utmost point connection circuit ground GND of positive-negative-positive triode VT1;
Described 12V dc power anode links to each other with circuit anode VCC, and the 12V dc power cathode links to each other with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081378 CN203135833U (en) | 2013-02-22 | 2013-02-22 | Optical control anti-theft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081378 CN203135833U (en) | 2013-02-22 | 2013-02-22 | Optical control anti-theft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203135833U true CN203135833U (en) | 2013-08-14 |
Family
ID=48943770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320081378 Expired - Fee Related CN203135833U (en) | 2013-02-22 | 2013-02-22 | Optical control anti-theft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203135833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199839A (en) * | 2013-02-22 | 2013-07-10 | 刘德志 | Light-operated anti-theft device |
-
2013
- 2013-02-22 CN CN 201320081378 patent/CN203135833U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199839A (en) * | 2013-02-22 | 2013-07-10 | 刘德志 | Light-operated anti-theft device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140222 |