CN202261208U - Optical sensing control switch - Google Patents
Optical sensing control switch Download PDFInfo
- Publication number
- CN202261208U CN202261208U CN2011203769436U CN201120376943U CN202261208U CN 202261208 U CN202261208 U CN 202261208U CN 2011203769436 U CN2011203769436 U CN 2011203769436U CN 201120376943 U CN201120376943 U CN 201120376943U CN 202261208 U CN202261208 U CN 202261208U
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- resistance
- circuit
- npn transistor
- relay
- control switch
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Abstract
The utility model relates to an optical sensing control switch. The control switch consists of a DC (direct current) power supply DC, a photosensitive circuit, an optical signal primary amplification circuit, a secondary amplification and feedback circuit and a power amplification and relay protection circuit. The photosensitive circuit consists of a photoresistor RG and a potentiometer RP; the optical signal primary amplification circuit consists of an NPN type transistor VT1, a resistor R2, a resistor R3 and a resistor R4; the secondary amplification and feedback circuit consists of an NPN type transistor VT2, a resistor R5 and a resistor R6; and the power amplification and relay protection circuit consists of a PNP type transistor VT3, a relay J and a switching diode D1. When the optical sensing control switch is in use, only one photoresistor RG is used to acquire an optical signal, then the optical signal is processed by three stages of amplification circuits and finally, the optical signal drives a switch contact of the relay. The control switch can be used for an automatic control circuit, a safety anti-theft system circuit, a counter circuit or a remote control circuit and the like and has the characteristics that the optical sensing control switch has high sensitivity and high response speed, reliably works and the like.
Description
Technical field
The utility model belongs to the electron controls technology field, relates to a kind of smooth sensing control switch.
Background technology
The utility model uses a photo resistance RG to gather letter light number, carries out three grades of amplifications through 3 transistors then, drives relay switch contacts at last.Can be used for circuit such as automatic control, antitheft security system, counter or Long-distance Control, it has responsive high, characteristics such as response speed is fast, reliable operation.
Below specify the described smooth sensing control switch of the utility model related correlation technique content in manufacturing process.
The utility model content
Goal of the invention and beneficial effect: the described smooth sensing control switch of the utility model only uses photo resistance RG to gather letter light number, carries out three grades of amplifications through 3 transistors then, drives relay switch contacts at last.This light sensing control switch can be used for circuit such as automatic control, antitheft security system, counter or Long-distance Control, and it has responsive high, characteristics such as reaction speed is fast, reliable operation.
Technical scheme: light sensing control switch, to form by DC power supply DC, photosensitive circuit, the elementary amplifying circuit of light signal, secondary amplification and feedback circuit, power amplification and relay protection circuit, its characteristic comprises:
Photosensitive circuit: form by DC power supply DC, photo resistance RG and potentiometer RP; The end of the terminating resistor R1 of the end of photo resistance RG and potentiometer RP; The anodal VCC of the other end connection circuit of photo resistance RG; The other end of potentiometer RP and lever arm thereof link to each other with circuit ground GND, the base stage of another termination NPN transistor VT1 of resistance R 1;
The elementary amplifying circuit of light signal: form by NPN transistor VT1, resistance R 2, resistance R 3 and resistance R 4; The end of the collector electrode connecting resistance R2 of NPN transistor VT1 and an end of resistance R 4; The anodal VCC of the other end connection circuit of resistance R 2; The base stage of another termination NPN transistor VT2 of resistance R 4, the end of the emitter connecting resistance R3 of NPN transistor VT1, the other end connection circuit ground GND of resistance R 3;
Secondary amplifies and feedback circuit: be made up of NPN transistor VT2, resistance R 5 and resistance R 6; The end of the base stage connecting resistance R5 of NPN transistor VT2; The other end connection circuit ground GND of resistance R 5; The end of the collector electrode connecting resistance R6 of NPN transistor VT2, the base stage of another termination PNP transistor VT3 of resistance R 6, the emitter of NPN transistor VT2 connects the emitter of NPN transistor VT1;
Power amplification and relay protection circuit: form by PNP transistor VT3, relay J and switching diode D1; One end of the collector connecting relay J coil of PNP transistor VT3 and the negative pole of switching diode D1; The anodal connection circuit ground GND of the other end of relay J coil and switching diode D1, the anodal VCC of the emitter connection circuit of PNP transistor VT3.
The composition of other circuit and the annexation between the element
The positive pole of DC power supply DC links to each other with circuit anode VCC, and the negative pole of DC power supply DC links to each other with circuit ground GND.
The circuit working principle: the input at light sensing control switching circuit forms a bleeder circuit with a photo resistance RG and trimmer potentiometer RP.Cause its resistance to change on the photo resistance RG when light impinges upon, whole bleeder circuit voltage distribution is changed, these change in voltage will controlled conducting or the cut-off state of NPN transistor VT1.
Potentiometer RP is used to adjust the sensitivity of photosensitive circuit, so it can use under the condition of different light.Switching diode D1 for protect PNP transistor VT3 by moment, the inverse electromotive force that bypass relay J coil produces.
Description of drawings
Accompanying drawing 1 is the embodiment circuit working schematic diagram of light sensing control switch; The positive pole of DC power supply DC links to each other with circuit anode VCC in the accompanying drawing 1, and the negative pole of DC power supply DC links to each other with circuit ground GND.
Embodiment
Circuit working schematic diagram and description of drawings according to the switch of light sensing control shown in the accompanying drawing 1; And according to the 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 to implement to realize the utility model.
Components and parts are selected and technical parameter
VT1, VT2 are NPN transistor, and model is 2CS9013, require β >=150;
VT3 is a PNP transistor, and model is 2CS9015; Require β >=150;
D1 is a switching diode, and model is 1N4148; RG is photo resistance, can select models such as MG45 for use;
Resistance is all selected metal film for use, and power is 1/8W, and the resistance of resistance R 1 is 4.7K Ω; The resistance of resistance R 2, resistance R 3, resistance R 6 is 1.2K Ω; The resistance of resistance R 4 is 2.7K Ω; The resistance of resistance R 5 is 2.2K Ω; RP is a potentiometer, and resistance is 100K Ω;
J is a relay, and direct voltage is 9～12V, the contact rated power 250V/2A of relay J;
The voltage of DC power supply DC is 9～12V, DC power supply DC maximum output current requirement >=60mA.
Circuit production and debugging
Want SC during welding photo resistance RG, because a little less than photo resistance RG is highly brittle, if improper being easy to of control weld time damaged because of overheated; Through the welding quality of visual examination components and parts, it is correct to guarantee that polar crystal pipe, diode and DC power supply are connected at last.
DC power supply DC can use 9～12V rectifier power source or battery pack, and resistance in the middle of earlier potentiometer RP being transferred to covers in photo resistance RG, and trimmer potentiometer RP then is up to the adhesive of the contact of the J that hears relay.Photo resistance RG is when receiving illumination, and the contact of relay J should discharge.If the adhesive of the contact of relay J or discharge sub-rulely, the careful resistance of trimmer potentiometer RP is till the working law of relay J is normal.
The ifs circuit cisco unity malfunction should check that at first normally whether DC power supply DC, guarantees circuit dc power DC in 9～12V scope, and the polarity of DC power supply DC connects correct.
Claims (2)
1. a light sensing control switch is made up of DC power supply DC, photosensitive circuit, the elementary amplifying circuit of light signal, secondary amplification and feedback circuit, power amplification and relay protection circuit, and its characteristic comprises:
Photosensitive circuit is made up of DC power supply DC, photo resistance RG and potentiometer RP; The end of the terminating resistor R1 of the end of photo resistance RG and potentiometer RP; The anodal VCC of the other end connection circuit of photo resistance RG; The other end of potentiometer RP and lever arm thereof link to each other with circuit ground GND, the base stage of another termination NPN transistor VT1 of resistance R 1;
The elementary amplifying circuit of light signal is made up of NPN transistor VT1, resistance R 2, resistance R 3 and resistance R 4; The end of the collector electrode connecting resistance R2 of NPN transistor VT1 and an end of resistance R 4; The anodal VCC of the other end connection circuit of resistance R 2; The base stage of another termination NPN transistor VT2 of resistance R 4, the end of the emitter connecting resistance R3 of NPN transistor VT1, the other end connection circuit ground GND of resistance R 3;
Secondary amplifies and feedback circuit is made up of NPN transistor VT2, resistance R 5 and resistance R 6; The end of the base stage connecting resistance R5 of NPN transistor VT2; The other end connection circuit ground GND of resistance R 5; The end of the collector electrode connecting resistance R6 of NPN transistor VT2, the base stage of another termination PNP transistor VT3 of resistance R 6, the emitter of NPN transistor VT2 connects the emitter of NPN transistor VT1;
Power amplification and relay protection circuit are made up of PNP transistor VT3, relay J and switching diode D1; One end of the collector connecting relay J coil of PNP transistor VT3 and the negative pole of switching diode D1; The anodal connection circuit ground GND of the other end of relay J coil and switching diode D1, the anodal VCC of the emitter connection circuit of PNP transistor VT3.
2. smooth sensing control switch according to claim 1 is characterized in that: the positive pole of DC power supply DC links to each other with circuit anode VCC, and the negative pole of DC power supply DC links to each other with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203769436U CN202261208U (en) | 2011-10-08 | 2011-10-08 | Optical sensing control switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203769436U CN202261208U (en) | 2011-10-08 | 2011-10-08 | Optical sensing control switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202261208U true CN202261208U (en) | 2012-05-30 |
Family
ID=46122387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203769436U Expired - Fee Related CN202261208U (en) | 2011-10-08 | 2011-10-08 | Optical sensing control switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202261208U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394631A (en) * | 2011-10-08 | 2012-03-28 | 黄宇嵩 | Light-sensing control switch |
| CN109116779A (en) * | 2018-08-27 | 2019-01-01 | 苏州矽典微智能科技有限公司 | A kind of automatic switch controller and method of electrical equipment |
-
2011
- 2011-10-08 CN CN2011203769436U patent/CN202261208U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394631A (en) * | 2011-10-08 | 2012-03-28 | 黄宇嵩 | Light-sensing control switch |
| CN109116779A (en) * | 2018-08-27 | 2019-01-01 | 苏州矽典微智能科技有限公司 | A kind of automatic switch controller and method of electrical equipment |
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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: 20120530 Termination date: 20121008 |