CN102394631A - Light-sensing control switch - Google Patents
Light-sensing control switch Download PDFInfo
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- CN102394631A CN102394631A CN2011103012153A CN201110301215A CN102394631A CN 102394631 A CN102394631 A CN 102394631A CN 2011103012153 A CN2011103012153 A CN 2011103012153A CN 201110301215 A CN201110301215 A CN 201110301215A CN 102394631 A CN102394631 A CN 102394631A
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- resistance
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- npn transistor
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- relay
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Abstract
The invention relates to a light-sensing control switch, which consists of a direct current power supply DC, a light-sensing circuit, a light signal primary amplification circuit, a secondary amplification and feedback circuit and a power amplification and relay protection circuit, wherein the light-sensing circuit consists of a light-sensitive resistor RG and a potentiometer RP; the light signal primary amplification circuit consists of a negative-positive-negative (NPN) type transistor VT1 and resistors R1, R2, R3 and R4; the secondary amplification and feedback circuit consists of an NPN type transistor VT2 and resistors R5 and R6; and the power amplification and relay protection circuit consists of a positive-negative-positive (PNP) type transistor VT3, a relay J and a switch diode D1. The light-sensing control switch has the advantages that: with only one light-sensitive resistor RG, a light signal is acquired; a tertiary amplification circuit is adopted; and switch contacts of the relay are driven. The light-sensing control switch can be applied to an automatic control circuit, a safety anti-theft system circuit, a counter circuit or a remote control circuit and has the characteristics of high sensitivity, high reaction speed, reliability in operation and the like.
Description
Technical field
The invention belongs to the electron controls technology field, relate to a kind of smooth sensing control switch.
Background technology
The present invention 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.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 smooth sensing control switch of the present invention related correlation technique content in manufacturing process.
Summary of the invention
Goal of the invention and beneficial effect: smooth sensing control switch of the present invention 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 summary of the invention, and the components and parts technical parameter described in the execution mode requires to implement to realize the present invention.
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 |
|---|---|---|---|
| CN2011103012153A CN102394631A (en) | 2011-10-08 | 2011-10-08 | Light-sensing control switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103012153A CN102394631A (en) | 2011-10-08 | 2011-10-08 | Light-sensing control switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102394631A true CN102394631A (en) | 2012-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103012153A Pending CN102394631A (en) | 2011-10-08 | 2011-10-08 | Light-sensing control switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN102394631A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162454A (en) * | 2015-10-12 | 2015-12-16 | 索尔思光电（成都）有限公司 | Optical module, signal output port thereof and signal output port protection circuit |
| CN106531652A (en) * | 2015-10-22 | 2017-03-22 | 安徽超元半导体有限公司 | Optical image system cooling device of prober |
| CN107972492A (en) * | 2017-12-29 | 2018-05-01 | 数源科技股份有限公司 | Children electric vehicle control |
| CN111224654A (en) * | 2020-01-15 | 2020-06-02 | 安徽工程大学 | Switch control circuit, device and equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3623135A1 (en) * | 1986-07-09 | 1988-01-28 | Telefunken Electronic Gmbh | Optical amplifier |
| CN2039194U (en) * | 1988-09-30 | 1989-06-14 | 江苏省南通市百花五金厂 | Eyesight-protecting device |
| CN201330988Y (en) * | 2009-01-05 | 2009-10-21 | 刘作锡 | Solar multipurpose lamp |
| CN102175926A (en) * | 2011-01-18 | 2011-09-07 | 黄宇嵩 | Thunderstorm electronic alarm |
| CN202261208U (en) * | 2011-10-08 | 2012-05-30 | 黄宇嵩 | Optical sensing control switch |
-
2011
- 2011-10-08 CN CN2011103012153A patent/CN102394631A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3623135A1 (en) * | 1986-07-09 | 1988-01-28 | Telefunken Electronic Gmbh | Optical amplifier |
| CN2039194U (en) * | 1988-09-30 | 1989-06-14 | 江苏省南通市百花五金厂 | Eyesight-protecting device |
| CN201330988Y (en) * | 2009-01-05 | 2009-10-21 | 刘作锡 | Solar multipurpose lamp |
| CN102175926A (en) * | 2011-01-18 | 2011-09-07 | 黄宇嵩 | Thunderstorm electronic alarm |
| CN202261208U (en) * | 2011-10-08 | 2012-05-30 | 黄宇嵩 | Optical sensing control switch |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162454A (en) * | 2015-10-12 | 2015-12-16 | 索尔思光电（成都）有限公司 | Optical module, signal output port thereof and signal output port protection circuit |
| CN106531652A (en) * | 2015-10-22 | 2017-03-22 | 安徽超元半导体有限公司 | Optical image system cooling device of prober |
| CN107972492A (en) * | 2017-12-29 | 2018-05-01 | 数源科技股份有限公司 | Children electric vehicle control |
| CN107972492B (en) * | 2017-12-29 | 2023-09-01 | 数源科技股份有限公司 | Child electric vehicle control system |
| CN111224654A (en) * | 2020-01-15 | 2020-06-02 | 安徽工程大学 | Switch control circuit, device and equipment |
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Application publication date: 20120328 |