CN205389278U - ON -OFF control circuit of LED lamp - Google Patents
ON -OFF control circuit of LED lamp Download PDFInfo
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- CN205389278U CN205389278U CN201521122950.8U CN201521122950U CN205389278U CN 205389278 U CN205389278 U CN 205389278U CN 201521122950 U CN201521122950 U CN 201521122950U CN 205389278 U CN205389278 U CN 205389278U
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Abstract
The utility model discloses a ON -OFF control circuit of LED lamp. Wherein, the control circuit that is just reversing, including power module and the enlarged module of isolation, power module enlargies module connection LED lamp through keeping apart, its characterized in that, keep apart and enlarge the module including keeping apart unit, amplifying unit, relay unit, power module falls external voltage class, steps down and handles output light current and press the warp it will to keep apart the unit weak voltage conversion presses for the forceful electric power to will by the amplifying unit the bright state of going out that the stable control signal of relay unit output gave LED lamp, control LED lamp is controlled in strong voltage amplification to realized the on off state that uses single chip microcomputer control direct current LED lamp, made control mode accord with industry intelligence control system's functional requirement on current phase.
Description
Technical field
This utility model relates to direct-current LED lamp control technology, particularly to the ON-OFF control circuit of LED.
Background technology
Traditional electric equipment generally only uses press button and relay that the switch of direct-current LED lamp is controlled, progress along with science and technology, electrical equipment only uses press button and relay not to meet the functional requirement of present stage industrial intelligent control system, and industrial intelligent control system develops into use single-chip microcomputer subsequently and electric equipment is controlled.
But the ability controlling voltage and control electric current of single-chip microcomputer is smaller, can only realize the device of light current pressure, weak current is controlled, can not directly drive relay.Accordingly, it would be desirable to use a kind of control circuit that the light current pressure of single-chip microcomputer, weak current are changed, it is converted into strong voltage, heavy current to drive relay that the switch of direct-current LED lamp is controlled.So using control circuit that the light current pressure of single-chip microcomputer, weak current are changed, it is necessary.
Utility model content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is in that to provide the ON-OFF control circuit of a kind of LED, directly can carry out processing rear drive relay to the control signal of single-chip microcomputer output, and by the switch of Control LED.
In order to achieve the above object, this utility model takes techniques below scheme:
The ON-OFF control circuit of a kind of LED, including power module and Isolation Amplifier Module, described power module connects LED by Isolation Amplifier Module, and described Isolation Amplifier Module includes isolated location, amplifying unit, relay unit；External voltage is carried out dropping stream by described power module, blood pressure lowering processes output light current pressure, through described isolated location, described light current pressure is converted to strong voltage, and by amplifying unit, the amplification of described strong voltage is controlled the stable control signal of relay unit output to LED, control the light on and off state of LED.
In the ON-OFF control circuit of described LED, described power module includes: the first reducing transformer, the second reducing transformer and the first electric capacity；1st foot of described first reducing transformer connects external switch power supply, 2nd foot of described first reducing transformer connects one end and second reducing transformer the 1st foot of described first electric capacity, 2nd foot of described second reducing transformer connects the input of described isolated location, the 3rd equal ground connection of foot of the 3rd foot of described first reducing transformer, the other end of the first capacitor and the second reducing transformer.
In the ON-OFF control circuit of described LED, described first reducing transformer adopts model to be that the linear voltage decreasing manostat of 78M12, the second reducing transformer adopt model to be the linear voltage decreasing manostat of 78M05.
In the ON-OFF control circuit of described LED, described external switch power supply is the DC source of 24V.
In the ON-OFF control circuit of described LED, described isolated location includes the first diode, optocoupler, the first resistance, the second resistance and the 3rd resistance, the input that one end is isolated location of described first resistance, connect the 2nd foot of described second reducing transformer, the other end of the first resistance connects the positive pole of the first diode, the negative pole of the first diode connects the 1st foot of optocoupler, 6th foot of described optocoupler by second resistance connect external switch power supply, optocoupler the 4th foot connect amplifying unit control end, also by the 3rd resistance eutral grounding.
In the ON-OFF control circuit of described LED, described amplifying unit includes audion, the 4th resistance and the 5th resistance, the base stage of described audion be amplifying unit control end, connect optocoupler the 4th foot, also by the 5th resistance eutral grounding, the colelctor electrode of described audion connects external switch power supply, the grounded emitter of audion by the 4th resistance.
In the ON-OFF control circuit of described LED, described relay unit includes relay and the second diode, the colelctor electrode of the 5th foot connecting triode of described relay and the positive pole of the second diode, 2nd foot of described relay connects the negative pole of the second diode and the positive pole of LED, 6th foot ground connection of described relay, the 3rd foot of relay connects the negative pole of LED.
In the ON-OFF control circuit of described LED, described LED includes some LED lamp bead in parallel.
Compared to prior art, the ON-OFF control circuit of a kind of LED that this utility model provides, including power module and Isolation Amplifier Module, described Isolation Amplifier Module includes isolated location, amplifying unit, relay unit；External voltage is carried out dropping stream by described power module, blood pressure lowering processes output light current pressure, through described isolated location, described light current pressure is converted to strong voltage, and by amplifying unit, the amplification of described strong voltage is controlled the stable control signal of relay unit output to LED, control the light on and off state of LED, it is achieved thereby that use the on off state of Single-chip Controlling direct-current LED lamp, make control mode meet present stage industrial intelligent and control the functional requirement of system.
Accompanying drawing explanation
The structured flowchart of the ON-OFF control circuit of the LED that Fig. 1 provides for this utility model.
The ON-OFF control circuit circuit diagram of the LED that Fig. 2 provides for this utility model.
Detailed description of the invention
This utility model provides the ON-OFF control circuit of a kind of LED, for making the purpose of this utility model, technical scheme and effect clearly, clearly, develops simultaneously embodiment to this utility model further description referring to accompanying drawing.Should be appreciated that specific embodiment described herein is only in order to explain this utility model, be not used to limit this utility model.
This utility model by increasing the ON-OFF control circuit of a LED on single chip machine controlling circuit plate, it is achieved the on off state of LED is controlled by single-chip microcomputer.Refer to Fig. 1, the ON-OFF control circuit of the LED that this utility model provides includes power module 10 and Isolation Amplifier Module 20, described power module connects LED 30 by Isolation Amplifier Module, and described LED 30 is direct-current LED lamp, and it includes the LED lamp bead that some granules are in parallel.
Described Isolation Amplifier Module includes isolated location 201, amplifying unit 202, relay unit 203；External voltage is carried out dropping stream by described power module, blood pressure lowering processes output light current pressure, through described isolated location 201, described light current pressure is converted to strong voltage, and by amplifying unit 202 described strong voltage amplified and to control relay unit 203 and export stable control signal to LED 30, control the light on and off state of LED.
Wherein, described external switch power supply is the DC source of 24V, and described power module is for being undertaken being depressured to 5V by the 24V unidirectional current of external switch power supply.Then, by described isolated location 201, single-chip microcomputer light current pressure, weak current signal are processed, then pass through described amplifying unit 202 and control described relay unit 203, finally control the Push And Release of described LED, after achieving a single-chip microcomputer signal amplification, the stable switch controlling direct-current LED lamp, makes control mode meet present stage industrial intelligent and controls the functional requirement of system.
Seeing also Fig. 2, described power module includes: the first reducing transformer U1, the second reducing transformer U2 and the first electric capacity C1；1st foot of described first reducing transformer U1 connects external switch power supply, 2nd foot of described first reducing transformer U1 connects one end and second reducing transformer U2 the 1st foot of described first electric capacity C1,2nd foot of described second reducing transformer U2 connects the input of described isolated location 201, the 3rd equal ground connection of foot of the 3rd foot of described first reducing transformer U1, the other end of the first electric capacity C1 device and the second reducing transformer U2.
First electric capacity C1 adopts nonpolarity ceramic paster electric capacity, it is pressure height, long service life.Described first reducing transformer U1 adopts model to be that the linear voltage decreasing manostat of 78M12, the second reducing transformer U2 adopt model to be the linear voltage decreasing manostat of 78M05, certainly, first reducing transformer U1 and the second reducing transformer U2 can also use other type of blood pressure lowering chip, only by the first reducing transformer U1 and the second reducing transformer U2, outside 24V power supply need to be carried out two-stage blood pressure lowering process, export to isolated location 201 afterwards.
Please continue to refer to Fig. 2, described isolated location 201 includes the first diode VD1, optocoupler A1, first resistance R1, second resistance R2 and the three resistance R3, the input that one end is isolated location 201 of described first resistance R1, connect the 2nd foot of described second reducing transformer U2, the other end of the first resistance R1 connects the positive pole of the first diode VD1, the negative pole of the first diode VD1 connects the 1st foot of optocoupler A1, 6th foot of described optocoupler A1 connects external switch power supply by the second resistance R2, 4th foot of optocoupler A1 connects the control end of amplifying unit 202, also by the 3rd resistance R3 ground connection.
Wherein, the model of described optocoupler A1 is TLP185GB, first diode VD1 is LED, and described first diode VD1 and the first resistance R1 acts primarily as signal display effect in isolated location 201, and optocoupler A1, the second resistance R2 and the three resistance R3 act primarily as buffer action in isolated location 201.
3rd foot of described optocoupler A1 connects the signal end of single-chip microcomputer, single-chip microcomputer export the control signal of LED switch.
Described amplifying unit 202 includes amplifying unit and includes audion VT1, the 4th resistance R4 and the five resistance R5, the base stage of described audion VT1 be amplifying unit 202 control end, connect optocoupler A1 the 4th foot, also by the 5th resistance R5 ground connection, the colelctor electrode of described three pole VT1 pipes connects external switch power supply, the grounded emitter of audion VT1 by the 4th resistance R4.Described audion is NPN type triode, or adopts NMOS to replace this audion VT1.
Described 4th resistance R4 plays metering function in described amplifying unit 202, regulates the electric current by described audion VT1；Described audion VT1 is starting voltage amplification in described amplifying unit 202, the isolation signals that described isolated location 201 comes is amplified further；Described 5th resistance R5 plays current drain effect in described amplifying unit 202, after the first optocoupler A1 of described isolated location 201 closes output, consume the unnecessary electric current that optocoupler A1 the 7th foot from described isolated location 201 comes, prevent circuit from risk and the phenomenon of competition occurring, make the error of output diminish.
Described relay unit 203 includes relay K z1 and the second diode VD2, the model of described relay K z1: HK4100F-DC24V-SHG, the colelctor electrode of its 5th foot connecting triode VT1 and the positive pole of the second diode VD2,2nd foot of described relay K z1 connects the negative pole of the second diode VD2 and the positive pole of LED 30, the 6th foot ground connection of described relay K z1, the 3rd foot of relay K z1 connects the negative pole of LED.
In relay unit 203, the second diode VD2 plays flywheel diode action, the spark produced during for eliminating described relay K z1 switch, it is prevented that damage relay；Relay K z1 plays the function of the last switch controlling direct-current LED lamp.In described relay K z1, being in series with relay coil between the 2nd foot and the 5th foot of relay K z1, when triode ON, switch selection conducting the 3rd foot within relay K z1 makes the negative pole of LED be low level, makes LED light.
In order to be better understood from this utility model, below in conjunction with Fig. 2, the operation principle of the ON-OFF control circuit of LED of the present utility model is described in detail:
After power on, described power module provides stable 5V power supply to the optocoupler A1 of described isolated location 201.When described optocoupler A1 the 3rd foot inputs without single-chip microcomputer signal, described first diode VD1 does not work, and when optocoupler A1 the 3rd foot has single-chip microcomputer signal to input, described first diode VD1 lights, it is possible to show the input state of single-chip microcomputer signal in real time.
Meanwhile, the light emitting diode cut-off when single-chip microcomputer signal is without input, within described optocoupler A1 so that described optocoupler A1 the 6th foot and the 4th foot electric current are truncated；When single-chip microcomputer signal has input, described optocoupler A1 interior light emitting diodes is opened so that described optocoupler A1 the 6th foot and the 4th foot current turns ON.
When described optocoupler A1 the 6th foot and the 4th foot current chopping, described amplifying unit 202 does not work；When the 6th foot and the 4th foot current turns ON of described optocoupler A1, described amplifying unit 202 is started working so that the grid of described audion VT1 is high level signal, makes to turn between the collector and emitter of audion VT1.Finally control relay unit 203 action to change.The 220V rotating electric current being controlled LED by relay K Z1 changes so that the on off state of LED changes.
In sum, this utility model, by controlling relay unit after single-chip microcomputer signal is isolated, amplified, controls the switch of direct-current LED lamp, it is achieved that the Single Chip Microcomputer (SCM) system control to direct-current LED lamp again through relay unit.It addition, this utility model only uses the conventional electronic component of minority, there is dependable performance, low cost feature.
It is understandable that; for those of ordinary skills; can conceive according to the technical solution of the utility model and utility model thereof and be equal to replacement or change, and all these change or replace the scope of the claims that all should belong to appended by this utility model.
Claims (8)
1. an ON-OFF control circuit for LED, including power module and Isolation Amplifier Module, described power module connects LED by Isolation Amplifier Module, it is characterised in that described Isolation Amplifier Module includes isolated location, amplifying unit, relay unit；External voltage is carried out dropping stream by described power module, blood pressure lowering processes output light current pressure, through described isolated location, described light current pressure is converted to strong voltage, and by amplifying unit, the amplification of described strong voltage is controlled the stable control signal of relay unit output to LED, control the light on and off state of LED.
2. the ON-OFF control circuit of LED according to claim 1, it is characterised in that described power module includes: the first reducing transformer, the second reducing transformer and the first electric capacity；1st foot of described first reducing transformer connects external switch power supply, 2nd foot of described first reducing transformer connects one end and second reducing transformer the 1st foot of described first electric capacity, 2nd foot of described second reducing transformer connects the input of described isolated location, the 3rd equal ground connection of foot of the 3rd foot of described first reducing transformer, the other end of the first capacitor and the second reducing transformer.
3. the ON-OFF control circuit of LED according to claim 2, it is characterised in that described first reducing transformer adopts model to be that the linear voltage decreasing manostat of 78M12, the second reducing transformer adopt model to be the linear voltage decreasing manostat of 78M05.
4. the ON-OFF control circuit of LED according to claim 2, it is characterised in that described external switch power supply is the DC source of 24V.
5. the ON-OFF control circuit of LED according to claim 2, it is characterized in that, described isolated location includes the first diode, optocoupler, first resistance, second resistance and the 3rd resistance, the input that one end is isolated location of described first resistance, connect the 2nd foot of described second reducing transformer, the other end of the first resistance connects the positive pole of the first diode, the negative pole of the first diode connects the 1st foot of optocoupler, 6th foot of described optocoupler connects external switch power supply by the second resistance, 4th foot of optocoupler connects the control end of amplifying unit, also by the 3rd resistance eutral grounding.
6. the ON-OFF control circuit of LED according to claim 5, it is characterized in that, described amplifying unit includes audion, the 4th resistance and the 5th resistance, the base stage of described audion be amplifying unit control end, connect optocoupler the 4th foot, also by the 5th resistance eutral grounding, the colelctor electrode of described audion connects external switch power supply, the grounded emitter of audion by the 4th resistance.
7. the ON-OFF control circuit of LED according to claim 6, it is characterized in that, described relay unit includes relay and the second diode, the colelctor electrode of the 5th foot connecting triode of described relay and the positive pole of the second diode, 2nd foot of described relay connects the negative pole of the second diode and the positive pole of LED, 6th foot ground connection of described relay, the 3rd foot of relay connects the negative pole of LED.
8. the ON-OFF control circuit of LED according to claim 7, it is characterised in that described LED includes some LED lamp bead in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122950.8U CN205389278U (en) | 2015-12-31 | 2015-12-31 | ON -OFF control circuit of LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122950.8U CN205389278U (en) | 2015-12-31 | 2015-12-31 | ON -OFF control circuit of LED lamp |
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| Publication Number | Publication Date |
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| CN205389278U true CN205389278U (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521122950.8U Active CN205389278U (en) | 2015-12-31 | 2015-12-31 | ON -OFF control circuit of LED lamp |
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| CN (1) | CN205389278U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937448A (en) * | 2017-04-19 | 2017-07-07 | 上海紫光乐联物联网科技有限公司 | The intelligent local and far distance light regulation method of LED |
| CN107071974A (en) * | 2017-04-19 | 2017-08-18 | 上海紫光乐联物联网科技有限公司 | LED intelligent dimming switchs long-range and local inter-linked controlling method |
| CN107071976A (en) * | 2017-04-19 | 2017-08-18 | 上海紫光乐联物联网科技有限公司 | LED intelligent dimming is switched |
| CN107071975A (en) * | 2017-04-19 | 2017-08-18 | 上海紫光乐联物联网科技有限公司 | LED intelligent dimming switch control inquiry power interruption recovering method |
-
2015
- 2015-12-31 CN CN201521122950.8U patent/CN205389278U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937448A (en) * | 2017-04-19 | 2017-07-07 | 上海紫光乐联物联网科技有限公司 | The intelligent local and far distance light regulation method of LED |
| CN107071974A (en) * | 2017-04-19 | 2017-08-18 | 上海紫光乐联物联网科技有限公司 | LED intelligent dimming switchs long-range and local inter-linked controlling method |
| CN107071976A (en) * | 2017-04-19 | 2017-08-18 | 上海紫光乐联物联网科技有限公司 | LED intelligent dimming is switched |
| CN107071975A (en) * | 2017-04-19 | 2017-08-18 | 上海紫光乐联物联网科技有限公司 | LED intelligent dimming switch control inquiry power interruption recovering method |
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