CN203399078U - Light-operated switch manufactured through voltage comparator - Google Patents
Light-operated switch manufactured through voltage comparator Download PDFInfo
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- CN203399078U CN203399078U CN201320420344.9U CN201320420344U CN203399078U CN 203399078 U CN203399078 U CN 203399078U CN 201320420344 U CN201320420344 U CN 201320420344U CN 203399078 U CN203399078 U CN 203399078U
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Abstract
The utility model discloses a light-operated switch manufactured through a voltage comparator. The light-operated switch manufactured through the voltage comparator is characterized by comprising a 12V direct-current power source, a photovoltaic conversion circuit, a voltage comparison circuit and a direct-current relay driving circuit, wherein the voltage comparison circuit is composed of a voltage comparator integrated circuit IC1, a resistor R1 and a resistor R2, and the selected model of the voltage comparator integrated circuit IC1 is LM311. The light-operated switch manufactured through the voltage comparator is a light-operated switch circuit which is good in universality, the photoresistors RG are used for collecting optical signals, the voltage comparator integrated circuit LM311 serves as a core element, and connection of an NPN type transistor VT1 is used for driving a contact of a direct-current relay J to be connected or be disconnected. The light-operated switch manufactured through the voltage comparator can be applied to the fields of automatic control, street lamp control, security systems, automatic counting and the like, and the light-operated switch circuit has the advantages of being simple in structure, small in number of used components and parts, reliable in working performance, good in universality, low in development cost and the like.
Description
Technical field
The utility model belongs to opto-electronic conversion and control technology field, is the light-operated switch of making about a kind of voltage comparator.
Background technology
Light-operated supplementary illumination, various Light operated desk lamp that various light-controlled antitheft devices, chicken farm adopt for improving the laying rate of laying hen, and Light Controlling Street Lamp Controller etc., they all use light-operated circuit in circuit.The light-operated switch that voltage comparator described in the utility model is made is a kind of universal stronger light-controlled switching circuit, it gathers light signal with photosensitive resistance R G, use voltage comparator integrated circuit LM311 as core parts, utilize the conducting of NPN transistor VT1 to drive being switched on or switched off of direct current relay J contact.The light-operated switch that voltage comparator is made can be applicable to the aspects such as automatic control, street lamp control, safety-protection system, Auto-counting.The advantage such as that this circuit has is simple for structure, components and parts use amount is few, reliable working performance, highly versatile, development cost are low.
Below describe light-operated switch that voltage comparator described in the utility model makes related relevant technologies content in implementation process in detail.
Utility model content
Goal of the invention and beneficial effect: the light-operated switch that voltage comparator described in the utility model is made is a kind of universal stronger light-controlled switching circuit, it gathers light signal with photosensitive resistance R G, use voltage comparator integrated circuit LM311 as core parts, utilize the conducting of NPN transistor VT1 to drive being switched on or switched off of direct current relay J contact.The light-operated switch that voltage comparator is made can be applicable to the aspects such as automatic control, street lamp control, safety-protection system, Auto-counting.The advantage such as that this circuit has is simple for structure, components and parts use amount is few, reliable working performance, highly versatile, development cost are low.
Circuit working principle: the utility model is to be core parts based on voltage comparator integrated circuit LM311, when the illumination of light drops to settings, resistance rising due to photo resistance RG in the light-controlled switching circuit of voltage comparator making, the resistance R 1 of in-phase input end and resistance R 2 provide a 6V reference voltage, because photo resistance RG resistance when dark can reach megaohm, the current potential of the inverting input of voltage comparator integrated circuit (IC) 1 is high potential, voltage comparator integrated circuit (IC) 1 output is electronegative potential, make not conducting of NPN transistor VT1, not adhesive of direct current relay J.Otherwise, because photo resistance RG resistance when illuminating only has 5～10K Ω, the current potential of the inverting input of voltage comparator integrated circuit (IC) 1 is electronegative potential, voltage comparator integrated circuit (IC) 1 output is high potential, make NPN transistor VT1 conducting, make the closure of direct current relay J normally opened contact or the disconnection of normally-closed contact, regulator potentiometer RP can set starting to control a little of light illumination.
Technical characterictic: the light-operated switch that voltage comparator is made, it comprises 12V DC power supply, photoelectric switching circuit, voltage comparator circuit, direct current relay drive circuit, it is characterized in that:
Photoelectric switching circuit: it is comprised of photo resistance RG, potentiometer RP, a termination voltage comparator circuit of photo resistance RG one end and potentiometer RP, the anodal VCC of the other end of potentiometer RP and movable end connection circuit thereof, the other end connection circuit ground GND of photo resistance RG;
Voltage comparator circuit: it is by voltage comparator integrated circuit (IC) 1, resistance R 1 and resistance R 2 form, the model that voltage comparator integrated circuit (IC) 1 is selected is LM311, the 2nd pin of one termination voltage comparator integrated circuit (IC) 1 of one end of resistance R 1 and resistance R 2, the anodal VCC of the 8th pin of voltage comparator integrated circuit (IC) 1 and the other end connection circuit of resistance R 1, the 1st pin of voltage comparator integrated circuit (IC) 1 and the other end connection circuit of the 4th pin and resistance R 2 ground GND, the 5th pin of voltage comparator integrated circuit (IC) 1 is connected with the 6th pin, the 7th pin of voltage comparator integrated circuit (IC) 1 connects direct current relay drive circuit,
Direct current relay drive circuit: it is comprised of NPN transistor VT1, resistance R 3, direct current relay J and silicon rectifier diode D1, the 7th pin of voltage comparator integrated circuit (IC) 1 connects the base stage of NPN transistor VT1 by resistance R 3, the collector electrode of NPN transistor VT1 connects one end of direct current relay J coil and the positive pole of silicon rectifier diode D1, the anodal VCC of the other end of direct current relay J coil and the negative pole connection circuit of silicon rectifier diode D1, the emitter connection circuit ground GND of NPN transistor VT1;
The positive pole of 12V DC power supply is connected with circuit anode VCC, and the negative pole of 12V DC power supply is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing 1 is embodiment circuit working schematic diagram of light-operated switch that the voltage comparator that provides of the utility model is made.
Embodiment
Light-operated switch fundamental diagram and the accompanying drawing explanation according to the voltage comparator shown in accompanying drawing 1, made, and according to annexation between components and parts in the each several part circuit described in utility model content, and the components and parts technical parameter described in execution mode requires and 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 technical parameter of components and parts and selection requirement
RG is photo resistance, can select the models such as MG45, during welding photo resistance RG, wants SC, because a little less than photo resistance RG is highly brittle, damage because of overheated if control improper being easy to weld time;
IC1 is voltage comparator integrated circuit, and the model of selecting is LM311;
VT1 is NPN transistor, and the model of selecting is 2SC9013, requires β >=150;
The resistance of resistance R 1 and resistance R 2 is 12K Ω, and the resistance of resistance R 3 is 1.5K Ω;
RP is potentiometer, and its resistance is 47K Ω;
D1 is silicon rectifier diode, and the model of selecting is 1N4001;
J is direct current relay, and the direct voltage of coil is 12V, and the contact rated power of direct current relay J requires to be greater than 250V/3A.
Circuit production main points and circuit debugging
The circuit structure of the light-operated switch of making because of voltage comparator is fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing 1 is welded to specifications, guarantee that polar crystal pipe, diode and DC power supply welding are correct.By visual examination physical connection line and welding quality, after careful inspection is correct, circuit of the present utility model does not substantially need to carry out any debugging and can work;
Claims (1)
1. the light-operated switch that voltage comparator is made, it comprises 12V DC power supply, photoelectric switching circuit, voltage comparator circuit, direct current relay drive circuit, it is characterized in that:
Described photoelectric switching circuit is comprised of photo resistance RG, potentiometer RP, a termination voltage comparator circuit of photo resistance RG one end and potentiometer RP, the anodal VCC of the other end of potentiometer RP and movable end connection circuit thereof, the other end connection circuit ground GND of photo resistance RG;
Described voltage comparator circuit is by voltage comparator integrated circuit (IC) 1, resistance R 1 and resistance R 2 form, the model that voltage comparator integrated circuit (IC) 1 is selected is LM311, the 2nd pin of one termination voltage comparator integrated circuit (IC) 1 of one end of resistance R 1 and resistance R 2, the anodal VCC of the 8th pin of voltage comparator integrated circuit (IC) 1 and the other end connection circuit of resistance R 1, the 1st pin of voltage comparator integrated circuit (IC) 1 and the other end connection circuit of the 4th pin and resistance R 2 ground GND, the 5th pin of voltage comparator integrated circuit (IC) 1 is connected with the 6th pin, the 7th pin of voltage comparator integrated circuit (IC) 1 connects direct current relay drive circuit,
Described direct current relay drive circuit is comprised of NPN transistor VT1, resistance R 3, direct current relay J and silicon rectifier diode D1, the 7th pin of voltage comparator integrated circuit (IC) 1 connects the base stage of NPN transistor VT1 by resistance R 3, the collector electrode of NPN transistor VT1 connects one end of direct current relay J coil and the positive pole of silicon rectifier diode D1, the anodal VCC of the other end of direct current relay J coil and the negative pole connection circuit of silicon rectifier diode D1, the emitter connection circuit ground GND of NPN transistor VT1;
The positive pole of described 12V DC power supply is connected with circuit anode VCC, and the negative pole of 12V DC power supply is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320420344.9U CN203399078U (en) | 2013-07-14 | 2013-07-14 | Light-operated switch manufactured through voltage comparator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320420344.9U CN203399078U (en) | 2013-07-14 | 2013-07-14 | Light-operated switch manufactured through voltage comparator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203399078U true CN203399078U (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320420344.9U Expired - Fee Related CN203399078U (en) | 2013-07-14 | 2013-07-14 | Light-operated switch manufactured through voltage comparator |
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| Country | Link |
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| CN (1) | CN203399078U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368550A (en) * | 2013-07-14 | 2013-10-23 | 周芸 | Light-operated switch manufactured through voltage comparator |
| CN106681410A (en) * | 2017-02-20 | 2017-05-17 | 上海应用技术大学 | Intelligent potted-plant co-ecological microsystem |
-
2013
- 2013-07-14 CN CN201320420344.9U patent/CN203399078U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368550A (en) * | 2013-07-14 | 2013-10-23 | 周芸 | Light-operated switch manufactured through voltage comparator |
| CN106681410A (en) * | 2017-02-20 | 2017-05-17 | 上海应用技术大学 | Intelligent potted-plant co-ecological microsystem |
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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 |
Granted publication date: 20140115 Termination date: 20140714 |
|
| EXPY | Termination of patent right or utility model |