CN109587888A - A kind of induction LED driving circuit - Google Patents
A kind of induction LED driving circuit Download PDFInfo
- Publication number
- CN109587888A CN109587888A CN201811587649.2A CN201811587649A CN109587888A CN 109587888 A CN109587888 A CN 109587888A CN 201811587649 A CN201811587649 A CN 201811587649A CN 109587888 A CN109587888 A CN 109587888A
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- led drive
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- npn triode
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- 230000006698 induction Effects 0.000 title claims abstract description 30
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 36
- 230000001939 inductive effect Effects 0.000 claims abstract description 32
- 239000011324 bead Substances 0.000 claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 230000005611 electricity Effects 0.000 claims description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Abstract
The invention discloses a kind of induction LED driving circuits, it includes current rectifying and wave filtering circuit, non-dimmable LED drive circuit, voltage stabilizing power supplying circuit, sensor circuit and signal invert processing circuit, the voltage input end of current rectifying and wave filtering circuit accesses city's low frequency ac, the voltage output end of current rectifying and wave filtering circuit is connect with the voltage input end of non-dimmable LED drive circuit, the voltage output end of non-dimmable LED drive circuit is connect with the voltage input end of LED lamp bead mould group and voltage stabilizing power supplying circuit respectively, the pressure stabilizing power supply port of voltage stabilizing power supplying circuit is connect with+12V the voltage input end of+the 12V of sensor circuit voltage input end and signal reversion processing circuit respectively, the inductive signal output end of sensor circuit is connect with the inductive signal input terminal of signal reversion processing circuit, signal invert processing circuit VCC power control terminal with The VCC power input of non-dimmable LED drive circuit connects；Advantage be it is at low cost, applicable open up that benefit mode is more, and the type for designing end reduction LED drive power can be made, be conducive to production and management.
Description
Technical field
The present invention relates to a kind of LED sense lights, more particularly, to a kind of induction LED driving circuit.
Background technique
LED sense light is widely used to the fields such as household, business as New Generation of Intelligent green energy conservation illuminator
It closes.Currently, the LED sense light that the relatively common LED sense light for having infrared induction and RF (radio frequency) is microwave induced, both
LED sense light realizes that induction turns on/off the switching of state by the moving condition of detection human body or object.
Many factories are to meet or design the LED lamp product with inducing function at present, in the choosing of LED drive circuit
Mix often select band simulation mouth or number mouth light modulation chip, however this light modulation the at high cost of chip, periphery circuit it is more,
It is applicable to open up that benefit mode is few, to cause the unit price of the LED drive power of finished product in the market high.In addition, some illumination clients
Need the LED lamp product without inducing function, and the LED lamp product that some illumination clients need to have inducing function,
For the different demand of adaptating lighting client, the LED drive power that end need to be different for different Demand Designs is designed, LED is caused
The type of driving power is more, however pole is unfavorable for producing and manage in this way, is also unfavorable for standardizing.
Summary of the invention
It is at low cost, applicable to open up technical problem to be solved by the invention is to provide a kind of induction LED driving circuit
Benefit mode is more, and can make the type for designing end reduction LED drive power, is conducive to standardized production and management.
The technical scheme of the invention to solve the technical problem is: a kind of induction LED driving circuit, feature exist
In: processing electricity is inverted including current rectifying and wave filtering circuit, non-dimmable LED drive circuit, voltage stabilizing power supplying circuit, sensor circuit and signal
The voltage input end on road, the current rectifying and wave filtering circuit accesses city's low frequency ac, and the voltage of the current rectifying and wave filtering circuit is defeated
Outlet is connect with the voltage input end of the non-dimmable LED drive circuit, and the voltage of the non-dimmable LED drive circuit is defeated
Outlet is connect with the voltage input end of LED lamp bead mould group and the voltage stabilizing power supplying circuit respectively, the voltage stabilizing power supplying circuit
Pressure stabilizing power supply port respectively with the+12V voltage input end of the sensor circuit and described signal reversion processing circuit+
The connection of 12V voltage input end, the sense of the inductive signal output end of the sensor circuit and signal reversion processing circuit
The connection of induction signal input terminal, the VCC power control terminal and the non-dimmable LED of the signal reversion processing circuit drive electricity
The VCC power input on road connects.
When being in sense state, the inductive signal output end of the sensor circuit exports high level, by described
Signal reversion processing circuit makes the voltage at the VCC power input of the non-dimmable LED drive circuit keep original width
Value, the non-dimmable LED drive circuit work normally, and the LED lamp bead in the LED lamp bead mould group is bright；When in non-sense
When answering state, the inductive signal output end of the sensor circuit exports low level, inverts processing circuit by the signal
So that the voltage at the VCC power input of the non-dimmable LED drive circuit is pulled low, the non-dimmable LED driving
Circuit does not work, and the LED lamp bead in the LED lamp bead mould group is gone out.
The signal reversion processing circuit is by the first NPN triode, the 2nd NPN triode, the first base resistance, first
Collector resistance, the second base resistance, the second collector resistance composition, one end of first base resistance is as described
Signal inverts the inductive signal input terminal of processing circuit, connect with the inductive signal output end of the sensor circuit, described
The other end of first base resistance is connect with the base stage of the first NPN triode, the current collection of the first NPN triode
Pole is connect with one end of one end of first collector resistance and second base resistance respectively, first collection
+ 12V voltage input end of the other end of electrode resistance as the signal reversion processing circuit, powers electric with the pressure stabilizing
The pressure stabilizing power supply port on road connects, and the other end of second base resistance is connect with the base stage of the 2nd NPN triode,
The collector of the 2nd NPN triode is connect with one end of second collector resistance, second collector
VCC power control terminal of the other end of resistance as the signal reversion processing circuit, drives electricity with the non-dimmable LED
The VCC power input on road connects, the transmitting of the emitter and the 2nd NPN triode of the first NPN triode
Extremely it is grounded.The structure that the signal inverts processing circuit is simple, and the first NPN triode and the 2nd NPN triode constitute compound
The switching circuit of type, the cut-off of the 2nd NPN triode disconnects when the first NPN triode saturation conduction, and the first NPN triode ends
2nd NPN triode saturation conduction when disconnection.
+ 12V voltage input end access+12V the voltage of the signal reversion processing circuit, is the 2nd NPN tri-
The base stage power supply of grade pipe, when being in sense state, the high electricity of the inductive signal output end output+3.3V of the sensor circuit
It is flat ,+3.3V high level by first base resistance be input to described in the first NPN triode base stage, described the
One NPN triode the saturation conduction ,+12V voltage for supplying the base stage of the 2nd NPN triode are pulled low, and described second
The cut-off of NPN triode disconnects, and the voltage at the VCC power input of the non-dimmable LED drive circuit keeps original at this time
Amplitude, the non-dimmable LED drive circuit work normally, and the LED lamp bead in the LED lamp bead mould group is bright；When in non-
When sense state, the inductive signal output end of the sensor circuit exports 0V low level, the base of the first NPN triode
Without base current, the first NPN triode, which ends, to be disconnected for pole, the pressure stabilizing power supply port output of the voltage stabilizing power supplying circuit
The base stage of 2nd NPN triode described in+12V voltage bio-occlusion is powered, the 2nd NPN triode saturation conduction, at this time
Voltage at the VCC power input of the non-dimmable LED drive circuit is pulled low, the non-dimmable LED drive circuit
It does not work, the LED lamp bead in the LED lamp bead mould group is gone out.
Compared with the prior art, the advantages of the present invention are as follows:
1) the induction LED driving circuit uses non-dimmable LED drive circuit, the non-tune in non-dimmable LED drive circuit
The cost of optical chip is low, and the non-dimmable chip of various different models can be selected, and applicable to open up benefit mode more.
2) the induction LED driving circuit uses non-dimmable LED drive circuit, and combines voltage stabilizing power supplying circuit, sensor circuit
Processing circuit is inverted with signal, so that the LED drive power with inducing function can be obtained using non-dimmable chip；It and is suitable
In requisition for the demand for the LED lamp product for not having inducing function, design end only need to be by voltage stabilizing power supplying circuit, sensor circuit and letter
Number reversion processing circuit remove, without changing the connection relationship of the other parts in entire LED drive circuit so that design
End reduces the type of LED drive power, is conducive to standardized production and management.
Detailed description of the invention
Fig. 1 is the composition block diagram of induction LED driving circuit of the invention；
Fig. 2 is the circuit diagram of induction LED driving circuit of the invention；
Fig. 3 is the circuit diagram of the signal reversion processing circuit in induction LED driving circuit of the invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
A kind of induction LED driving circuit proposed by the present invention, as depicted in figs. 1 and 2 comprising current rectifying and wave filtering circuit 1, non-
Dimming LED drive circuit 2, voltage stabilizing power supplying circuit 3, the sensor circuit 4 of infrared induction and signal invert processing circuit 5, rectification filter
The voltage input end of wave circuit 1 accesses city's low frequency ac, and the voltage output end and non-dimmable LED of current rectifying and wave filtering circuit 1 drive
The voltage input end of circuit 2 connects, the voltage output end of non-dimmable LED drive circuit 2 respectively with LED lamp bead mould group 6 and pressure stabilizing
The voltage input end of power supply circuit 3 connects, the pressure stabilizing power supply port of voltage stabilizing power supplying circuit 3 respectively with the+12V voltage of sensor circuit 4
Input terminal is connected with+12V the voltage input end of signal reversion processing circuit 5, the inductive signal output end and signal of sensor circuit 4
The inductive signal input terminal connection of processing circuit 5 is inverted, signal inverts the VCC power control terminal and non-dimmable LED of processing circuit 5
The VCC power input of driving circuit 2 connects.When being in sense state, the inductive signal output end of sensor circuit 4 exports high
Level inverts processing circuit 5 by signal and the voltage at the VCC power input of non-dimmable LED drive circuit 2 is made to keep former
There is amplitude, non-dimmable LED drive circuit 2 works normally, and the LED lamp bead in LED lamp bead mould group 6 is bright；When in non-inductive state
When, the inductive signal output end of sensor circuit 4 exports low level, inverts processing circuit 5 by signal and non-dimmable LED is driven
Voltage at the VCC power input of circuit 2 is pulled low, and non-dimmable LED drive circuit 2 does not work, in LED lamp bead mould group 6
LED lamp bead is gone out.
Preferably, the induction of current rectifying and wave filtering circuit 1, non-dimmable LED drive circuit 2, voltage stabilizing power supplying circuit 3, infrared induction
Circuit 4 is all made of the prior art；The connection of current rectifying and wave filtering circuit 1 and non-dimmable LED drive circuit 2, non-dimmable LED drive circuit
2 are all made of existing connection type with the connection of LED lamp bead mould group 6；The voltage input end and non-dimmable of voltage stabilizing power supplying circuit 3
The voltage output end of LED drive circuit 2 connects, and connect for one end of resistance R15 with one end of capacitor C5 in Fig. 2, pressure stabilizing power supply
The pressure stabilizing power supply port of circuit 3 inverts processing circuit 5 with the+12V voltage input end and signal of the sensor circuit of infrared induction 4 respectively
The connection of+12V voltage input end, in Fig. 2 the pressure stabilizing power supply port of voltage stabilizing power supplying circuit 3 respectively with the sensor circuit of infrared induction 4
In induction chip U2 the port VCC, signal reversion processing circuit 5 in the first collector resistance Rc1 one end connection；It is infrared
The inductive signal output end of the sensor circuit 4 of induction is the OUT terminal mouth of induction chip U2, inverts processing circuit 5 with signal
In the first base resistance Rb1 one end connection.
Preferably, as shown in Figures 2 and 3, signal inverts processing circuit 5 by the first NPN triode Q1, the 2nd NPN three-level
Pipe Q2, the first base resistance Rb1, the first collector resistance Rc1, the second base resistance Rb2, the second collector resistance Rc2 composition,
Inductive signal input terminal of the one end of first base resistance Rb1 as signal reversion processing circuit 5, the induction with sensor circuit 4
Signal output end connection, the other end of the first base resistance Rb1 are connect with the base stage of the first NPN triode Q1, the first NPN three-level
The collector of pipe Q1 is connect with one end of one end of the first collector resistance Rc1 and the second base resistance Rb2 respectively, the first current collection
+ 12V voltage input end of the other end of electrode resistance Rc1 as signal reversion processing circuit 5, the pressure stabilizing with voltage stabilizing power supplying circuit 3
Power supply port connection, the other end of the second base resistance Rb2 are connect with the base stage of the 2nd NPN triode Q2, the 2nd NPN triode Q2
Collector connect with one end of the second collector resistance Rc2, the other end of the second collector resistance Rc2 as signal reversion at
Manage circuit 5 VCC power control terminal, connect with the VCC power input of non-dimmable LED drive circuit 2, i.e., with non-dimmable LED
The port VCC of non-dimmable chip U1 in driving circuit 2 connects, the emitter and the 2nd NPN triode of the first NPN triode Q1
The emitter of Q2 is grounded.Signal inverts the+12V voltage input end access+12V voltage of processing circuit 5, is the 2nd NPN three-level
The base stage of pipe Q2 is powered, when being in sense state, the inductive signal output end output+3.3V high level of sensor circuit 4 ,+
3.3V high level is input to the base stage of the first NPN triode Q1, the first NPN triode Q1 saturation by the first base resistance Rb1
Conducting is (since the first base resistance Rb1 has base current flowing, so that the collector of the first NPN triode Q1 flows through more
Big amplification electric current, the first NPN triode Q1 work in saturation region), because the first NPN triode Q1 is connected, supply the 2nd NPN tri-
+ 12V the voltage of the base stage of grade pipe Q2 is pulled low, and the 2nd NPN triode Q2 ends disconnection (the due to without sufficiently large base voltage
Two NPN triode Q2 work in cut-off region), the voltage at the VCC power input of non-dimmable LED drive circuit 2 is kept at this time
Original amplitude, non-dimmable LED drive circuit 2 work normally, and the LED lamp bead in LED lamp bead mould group 6 is bright；When in non-inductive shape
When state, the inductive signal output end of sensor circuit 4 exports 0V low level, and the base stage of the first NPN triode Q1 is without base current, and the
One NPN triode Q1 cut-off disconnects, the 2nd NPN tri- of+12V voltage bio-occlusion of the pressure stabilizing power supply port output of voltage stabilizing power supplying circuit 3
The base stage of grade pipe Q2 is powered, the 2nd NPN triode Q2 saturation conduction, at this time the VCC power input of non-dimmable LED drive circuit 2
Voltage at end is pulled low (lower than the minimum operating voltage of non-dimmable LED drive circuit 2), the not work of non-dimmable LED drive circuit 2
Make, the LED lamp bead in LED lamp bead mould group 6 is gone out.
Claims (4)
1. a kind of induction LED driving circuit, it is characterised in that: including current rectifying and wave filtering circuit, non-dimmable LED drive circuit, pressure stabilizing
Power supply circuit, sensor circuit and signal invert processing circuit, and the voltage input end of the current rectifying and wave filtering circuit accesses city's low frequency
The voltage input end of alternating current, the voltage output end of the current rectifying and wave filtering circuit and the non-dimmable LED drive circuit connects
Connect, the voltage output end of the non-dimmable LED drive circuit respectively with LED lamp bead mould group and the voltage stabilizing power supplying circuit
Voltage input end connection, the pressure stabilizing power supply port of the voltage stabilizing power supplying circuit are defeated with the+12V voltage of the sensor circuit respectively
Enter end to connect with+12V the voltage input end of the signal reversion processing circuit, the inductive signal output of the sensor circuit
It holds and is connect with the inductive signal input terminal of signal reversion processing circuit, the VCC electricity of the signal reversion processing circuit
Source control terminal is connect with the VCC power input of the non-dimmable LED drive circuit.
2. a kind of induction LED driving circuit according to claim 1, it is characterised in that: described when being in sense state
The inductive signal output end of sensor circuit export high level, processing circuit is inverted by the signal and makes the non-tune
Voltage at the VCC power input of light LED drive circuit keeps original amplitude, and the non-dimmable LED drive circuit is normal
It works, the LED lamp bead in the LED lamp bead mould group is bright；When being in non-inductive state, the induction letter of the sensor circuit
Number output end exports low level, inverts the VCC that processing circuit makes the non-dimmable LED drive circuit by the signal
Voltage at power input is pulled low, and the non-dimmable LED drive circuit does not work, in the LED lamp bead mould group
LED lamp bead is gone out.
3. a kind of induction LED driving circuit according to claim 1 or 2, it is characterised in that: the signal reversion processing
Circuit is by the first NPN triode, the 2nd NPN triode, the first base resistance, the first collector resistance, the second base resistance,
Two collector resistances composition, inductive signal of the one end of first base resistance as the signal reversion processing circuit
Input terminal is connect with the inductive signal output end of the sensor circuit, the other end of first base resistance with it is described
The first NPN triode base stage connection, the collector of the first NPN triode respectively with the described first collector electricity
One end of resistance is connected with one end of second base resistance, and the other end of first collector resistance is as described
Signal inverts the+12V voltage input end of processing circuit, connect with the pressure stabilizing power supply port of the voltage stabilizing power supplying circuit, described
The other end of second base resistance is connect with the base stage of the 2nd NPN triode, the current collection of the 2nd NPN triode
Pole is connect with one end of second collector resistance, and the other end of second collector resistance is as the signal
The VCC power control terminal for inverting processing circuit, connect with the VCC power input of the non-dimmable LED drive circuit, described
The emitter of the first NPN triode and the emitter of the 2nd NPN triode be grounded.
4. a kind of induction LED driving circuit according to claim 3, it is characterised in that: the signal reversion processing electricity
+ 12V voltage input end access+12V the voltage on road is that the base stage of the 2nd NPN triode is powered, when in sense state
When, the inductive signal output end output+3.3V high level of the sensor circuit ,+3.3V high level passes through first base
Electrode resistance is input to the base stage of the first NPN triode, the first NPN triode saturation conduction, supplies described
+ 12V the voltage of the base stage of 2nd NPN triode is pulled low, and the 2nd NPN triode, which ends, to be disconnected, and described at this time is non-
Voltage at the VCC power input of dimming LED drive circuit keeps original amplitude, and the non-dimmable LED drive circuit is just
It often works, the LED lamp bead in the LED lamp bead mould group is bright；When being in non-inductive state, the induction of the sensor circuit
Signal output end exports 0V low level, and the base stage of the first NPN triode is without base current, the first NPN three-level
Pipe cut-off disconnects, the 2nd NPN tri- described in the+12V voltage bio-occlusion of the pressure stabilizing power supply port output of the voltage stabilizing power supplying circuit
The base stage power supply of grade pipe, the 2nd NPN triode saturation conduction, the VCC of the non-dimmable LED drive circuit is electric at this time
The voltage of source input end is pulled low, and the non-dimmable LED drive circuit does not work, the LED in the LED lamp bead mould group
Lamp bead is gone out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811587649.2A CN109587888A (en) | 2018-12-25 | 2018-12-25 | A kind of induction LED driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811587649.2A CN109587888A (en) | 2018-12-25 | 2018-12-25 | A kind of induction LED driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109587888A true CN109587888A (en) | 2019-04-05 |
Family
ID=65931588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811587649.2A Withdrawn CN109587888A (en) | 2018-12-25 | 2018-12-25 | A kind of induction LED driving circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN109587888A (en) |
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| KR200346209Y1 (en) * | 2003-12-18 | 2004-03-30 | 노종식 | A lamp driving sensor circuit |
| KR20110027337A (en) * | 2009-09-10 | 2011-03-16 | 주식회사 타보스 | Dimming device of sensor lamp using led |
| JP2011223800A (en) * | 2010-04-13 | 2011-11-04 | Minebea Co Ltd | Switching power supply circuit |
| CN202095144U (en) * | 2011-05-31 | 2011-12-28 | 邓加慧 | Sound-light control streetlamp circuit |
| CN202374523U (en) * | 2011-12-15 | 2012-08-08 | 宁波升谱光电半导体有限公司 | Light emitting diode (LED) human body induction lamp |
| CN102668712A (en) * | 2009-11-25 | 2012-09-12 | 株式会社村田制作所 | LED drive electric source device and LED illumination device |
| CN102665362A (en) * | 2012-05-28 | 2012-09-12 | 济南九恒实业有限公司 | Earthing type protective infrared human-sensing LED smart lamp |
| CN102708805A (en) * | 2012-04-26 | 2012-10-03 | 贵阳海信电子有限公司 | Multichannel LED backlight source drive circuit and liquid crystal display device utilizing same |
| KR20130058978A (en) * | 2011-11-28 | 2013-06-05 | 루멘전광 주식회사 | Sensor lamp control circuit |
| WO2015131389A1 (en) * | 2014-03-07 | 2015-09-11 | 深圳市众明半导体照明有限公司 | Mr16 type led spotlight and dimming power source thereof |
| CN107666744A (en) * | 2017-11-15 | 2018-02-06 | 贵派电器股份有限公司 | LED touch stepless dimming color-temperature regulating driving power and its control method |
| CN209861216U (en) * | 2018-12-25 | 2019-12-27 | 浙江阳光照明灯具有限公司 | Induction LED drive circuit |
-
2018
- 2018-12-25 CN CN201811587649.2A patent/CN109587888A/en not_active Withdrawn
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200346209Y1 (en) * | 2003-12-18 | 2004-03-30 | 노종식 | A lamp driving sensor circuit |
| KR20110027337A (en) * | 2009-09-10 | 2011-03-16 | 주식회사 타보스 | Dimming device of sensor lamp using led |
| CN102668712A (en) * | 2009-11-25 | 2012-09-12 | 株式会社村田制作所 | LED drive electric source device and LED illumination device |
| JP2011223800A (en) * | 2010-04-13 | 2011-11-04 | Minebea Co Ltd | Switching power supply circuit |
| CN202095144U (en) * | 2011-05-31 | 2011-12-28 | 邓加慧 | Sound-light control streetlamp circuit |
| KR20130058978A (en) * | 2011-11-28 | 2013-06-05 | 루멘전광 주식회사 | Sensor lamp control circuit |
| CN202374523U (en) * | 2011-12-15 | 2012-08-08 | 宁波升谱光电半导体有限公司 | Light emitting diode (LED) human body induction lamp |
| CN102708805A (en) * | 2012-04-26 | 2012-10-03 | 贵阳海信电子有限公司 | Multichannel LED backlight source drive circuit and liquid crystal display device utilizing same |
| CN102665362A (en) * | 2012-05-28 | 2012-09-12 | 济南九恒实业有限公司 | Earthing type protective infrared human-sensing LED smart lamp |
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Application publication date: 20190405 |
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| WW01 | Invention patent application withdrawn after publication |