CN202103913U - Led adjusting system - Google Patents
Led adjusting system Download PDFInfo
- Publication number
- CN202103913U CN202103913U CN201120205823XU CN201120205823U CN202103913U CN 202103913 U CN202103913 U CN 202103913U CN 201120205823X U CN201120205823X U CN 201120205823XU CN 201120205823 U CN201120205823 U CN 201120205823U CN 202103913 U CN202103913 U CN 202103913U
- Authority
- CN
- China
- Prior art keywords
- links
- resistance
- adjustment pipe
- led unit
- source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present utility model discloses an LED adjusting system. The system comprises a direct current source, a first control unit, a second control unit, a first LED unit, a second LED unit, and an inverter. The first control unit is connected with the output end of the direct current source after being connected with the first LED unit in series, and the first control unit is used for adjusting the current of the first LED unit according to first direct current pulse signals. The output end of the inverter is connected with the second control unit, the inverter is used for receiving the first direct current pulse signals, changing the first direct current pulse signals into second direct current pulse signals in an anti-phase way and providing to the second control unit, and the sum of the duty ratio of the second direct current pulse signals and the duty ratio of the first direct current pulse signals is one. The second control unit is connected with the output end of the direct current source after being connected with the second LED unit in series, and the second control unit is used for adjusting the current of the second LED unit according to the second direct current pulse signals. In the prior art, as a constant DC/DC circuit is used in each LED in an LED adjusting circuit, the problems that the circuit is complex and the cost is high are caused. However, by adopting the system, the problems can be solved.
Description
Technical field
The utility model relates to LED control technology field, more particularly, relates to a kind of LED regulating system.
Background technology
The raising of Along with people's living standard, people are for the functional requirement of the lighting diversity that also becomes, and light fixture also need possess certain comfortableness except the lighting requirement that will satisfy daily life.
Known, during radiation photochromic identical, the temperature of ideal black-body i.e. the colour temperature of this light source under a certain temperature for the color of source emissioning light and ideal black-body.Photochromic more blue, colour temperature is higher; Photochromic redder, colour temperature is lower.And colour temperature has steady atmosphere, warm sensation below 3300K; Colour temperature has frank sensation at 3000-5000K; Colour temperature has cold sensation more than 5000K.
Since different time, occasion to colour temperature require differently, therefore require the same light fixture can the regulated at will colour temperature, therefore how to utilize the LED lamp of two or more colors to realize the adjustable continuously of light source color temperature, be the very wide technology of a kind of application.
Prior art; As shown in Figure 1, the mode of employing constant voltage module+multichannel non-isolation DC/DC constant-current circuit, the output of constant voltage module is as the input of multichannel non-isolation DC/DC constant-current circuit; Every road non-isolation DC/DC constant-current circuit does constant current control without help; The size of current on every road can independently be set as required, regulate the brightness of the LED lamp of different colours, realize the color of light source or the adjusting of colour temperature.Yet,, make complicated circuit, cost higher like this because the LED of every kind of color need use a constant current DC/DC circuit.
The utility model content
In view of this, the utility model provides a kind of LED regulating system, the complicated circuit, the cost problem of higher that exist when solving the light source color temperature of regulating the LED lamp in the prior art.
For addressing the above problem, the existing scheme that proposes is following:
A kind of LED regulating system comprises: DC source, first control unit, second control unit, a LED unit, the 2nd LED unit and inverter, wherein:
Be connected the output of DC source after said first control unit and the LED units in series, be used for regulating the electric current of a said LED unit according to first dc pulse signal;
Said inverter output links to each other with second control unit; To be used to receive said first dc pulse signal be second dc pulse signal with its anti-phase and offer second control unit, and this second dc pulse signal and the first dc pulse signal duty ratio sum are 1;
Be connected the output of DC source after said second control unit and the 2nd LED units in series, be used for regulating the electric current of said the 2nd LED unit according to second dc pulse signal.
Preferably, said DC source is constant pressure source or constant-current source.
Preferably, a said LED unit is the LED lamp of the color of the same race of one or more series connection, perhaps, is the LED lamp of the colour temperature of the same race of one or more series connection.
Preferably, said the 2nd LED unit is the LED lamp of the color of the same race of one or more series connection, perhaps, is the LED lamp of the colour temperature of the same race of one or more series connection.
Preferably, said first control unit and second control unit are switching tube, and said switching tube is triode, metal-oxide-semiconductor or IGBT.
Preferably, said first control unit comprises: the first adjustment pipe, first switching tube and first resistance, and wherein: the said first adjustment pipe is triode;
When said first switching tube was first triode, the collector electrode of this triode linked to each other with the negative pole of a LED unit, and base stage links to each other with the collector electrode of the first adjustment pipe, and emitter links to each other with first resistance, one end; When said first switching tube was first metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of a LED unit, and grid links to each other with the collector electrode of the first adjustment pipe, and source electrode links to each other with first resistance, one end; When said first switching tube was an IGBT, the collector electrode of this IGBT linked to each other with the negative pole of a LED unit, and grid links to each other with the collector electrode of the first adjustment pipe, and emitter links to each other with first resistance, one end;
The emitter of the other end of said first resistance and the first adjustment pipe all links to each other with the negative output terminal of DC source; The base stage of the said first adjustment pipe is connected the common port of first resistance and first switching tube;
Said second control unit comprises: the second adjustment pipe, second switch pipe and second resistance, and wherein: the said second adjustment pipe is triode;
When said second switch pipe was second triode, the collector electrode of this triode linked to each other with the negative pole of the 2nd LED unit, and base stage links to each other with the collector electrode of the second adjustment pipe, and emitter links to each other with second resistance, one end; When said second switch pipe was second metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the collector electrode of the second adjustment pipe, and source electrode links to each other with second resistance, one end; When said second switch pipe was the 2nd IGBT, the collector electrode of this IGBT linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the collector electrode of the second adjustment pipe, and emitter links to each other with second resistance, one end;
The emitter of the other end of said second resistance and the second adjustment pipe all links to each other with the negative output terminal of DC source; The base stage of the said second adjustment pipe is connected the common port of second resistance and second switch pipe.
Preferably, said first control unit comprises: the first adjustment pipe, first switching tube and first resistance, and wherein: the said first adjustment pipe is metal-oxide-semiconductor;
When said first switching tube was first triode, the collector electrode of this triode linked to each other with the negative pole of a LED unit, and base stage links to each other with the drain electrode of the first adjustment pipe, and emitter links to each other with first resistance, one end; When said first switching tube was first metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of a LED unit, and grid links to each other with the drain electrode of the first adjustment pipe, and source electrode links to each other with first resistance, one end; When said first switching tube was an IGBT, the collector electrode of this IGBT linked to each other with the negative pole of a LED unit, and grid links to each other with the drain electrode of the first adjustment pipe, and emitter links to each other with first resistance, one end;
The source electrode of the other end of said first resistance and the first adjustment pipe all links to each other with the negative output terminal of DC source; The grid of the said first adjustment pipe is connected the common port of first resistance and first switching tube;
Said second control unit comprises: the second adjustment pipe, second switch pipe and second resistance, and wherein: the said second adjustment pipe is metal-oxide-semiconductor;
When said second switch pipe was second triode, the collector electrode of this triode linked to each other with the negative pole of the 2nd LED unit, and base stage links to each other with the drain electrode of the second adjustment pipe, and emitter links to each other with second resistance, one end; When said second switch pipe was second metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the drain electrode of the second adjustment pipe, and source electrode links to each other with second resistance, one end; When said second switch pipe was the 2nd IGBT, the collector electrode of this IGBT linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the drain electrode of the second adjustment pipe, and emitter links to each other with second resistance, one end;
The source electrode of the other end of said second resistance and the second adjustment pipe all links to each other with the negative output terminal of DC source; The grid of the said second adjustment pipe is connected the common port of second resistance and second switch pipe.
Preferably, said first control unit comprises: first filter circuit, first integrated operational amplifier, first compensating circuit, the 3rd adjustment pipe and the 5th resistance, wherein:
When the said the 3rd adjusted Guan Weidi three triodes, the collector electrode of this triode linked to each other with the negative pole of a LED unit, and base stage links to each other with the output of first integrated operational amplifier, and emitter links to each other with the 5th resistance one end; When the said the 3rd adjusted Guan Weidi three metal-oxide-semiconductors, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of a LED unit, and grid links to each other with the output of first integrated operational amplifier, and source electrode links to each other with the 5th resistance one end; When the said the 3rd adjusted Guan Weidi three IGBT, the collector electrode of this IGBT linked to each other with the negative pole of a LED unit, and grid links to each other with the output of first integrated operational amplifier, and emitter links to each other with the 5th resistance one end;
One end of said the 5th resistance also links to each other with the negative-phase input of first integrated operational amplifier, and the other end links to each other with the negative output terminal of DC source; Said first filter circuit links to each other with the normal phase input end of first integrated operational amplifier; The first compensating circuit two ends are connected to the negative-phase input and the output of first integrated operational amplifier;
Said second control unit comprises: second filter circuit, second integrated operational amplifier, second compensating circuit, the 4th adjustment pipe and the 6th resistance, wherein:
When the said the 4th adjusted Guan Weidi four triodes, the collector electrode of this triode linked to each other with the negative pole of the 2nd LED unit, and base stage links to each other with the output of second integrated operational amplifier, and emitter links to each other with the 6th resistance one end; When the said the 4th adjusted Guan Weidi four metal-oxide-semiconductors, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the output of second integrated operational amplifier, and source electrode links to each other with the 6th resistance one end; When the said the 4th adjusted Guan Weidi four IGBT, the collector electrode of this IGBT linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the output of second integrated operational amplifier, and emitter links to each other with the 6th resistance one end;
One end of said the 6th resistance also links to each other with the negative-phase input of second integrated operational amplifier, and the other end links to each other with the negative output terminal of DC source; Said second filter circuit links to each other with the normal phase input end of second integrated operational amplifier; The second compensating circuit two ends are connected to the negative-phase input and the output of second integrated operational amplifier.
Preferably, the control end of the said first adjustment pipe is connected with the common port of first resistance with first switching tube through the 3rd resistance; The control end of the said second adjustment pipe is connected with the common port of second resistance with the second switch pipe through the 4th resistance.
Preferably; Said inverter comprises the resistance and the switching tube of series connection; This series arm is connected the output of said DC source; Said control end of switching tube is the input of said inverter, and the common port of said resistance and switching tube is the output of said inverter, and the switching tube of said composition inverter is triode, metal-oxide-semiconductor or IGBT.
Can find out from above-mentioned technical scheme; In the disclosed LED regulating system of the utility model; First dc pulse signal is regulated a LED cell current through first control circuit, and first dc pulse signal becomes second dc pulse signal after the inverter anti-phase, regulates the 2nd LED cell current through second control circuit; Realized electric current through a dc pulse signal control two paths of LED unit; Solve in the prior art, the LED regulating circuit all need use a constant current DC/DC circuit, the complicated circuit that causes, cost problem of higher because of every paths of LEDs.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sketch map of LED regulating circuit in the prior art;
Fig. 2 is the circuit diagram of the disclosed a kind of LED regulating system of the utility model embodiment;
Fig. 3 is the circuit diagram of the disclosed a kind of LED regulating system of the utility model one embodiment;
Fig. 4 (a) is the circuit diagram of the disclosed a kind of LED regulating system of another embodiment of the utility model;
Fig. 4 (b) is the circuit diagram of the disclosed a kind of LED regulating system of another embodiment of the utility model;
Fig. 4 (c) is the circuit diagram of the disclosed a kind of LED regulating system of another embodiment of the utility model;
Fig. 5 is the circuit diagram of the disclosed a kind of LED regulating system of another embodiment of the utility model.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of LED regulating system, the complicated circuit, the cost problem of higher that exist when solving the light source color temperature of regulating the LED lamp in the prior art.
The disclosed LED regulating system of present embodiment, as shown in Figure 2, comprising: DC source 101, first control unit 102, second control unit 103, inverter 104, a LED unit 105 and the 2nd LED unit 106, wherein:
The output of inverter 104 links to each other with second control unit 103; To be used to receive said first dc pulse signal be second dc pulse signal with its anti-phase and offer second control unit 103, and this second dc pulse signal and the first dc pulse signal duty ratio sum are 1;
Concrete, first dc pulse signal can be produced by pulse signal generator, and described pulse signal generator links to each other with the disclosed LED regulating system of present embodiment, and it can also regulate the duty ratio of first dc pulse signal.First dc pulse signal that produces is second dc pulse signal through inverter 104 anti-phases, and the frequency of second dc pulse signal and first dc pulse signal equates, and duty ratio is complementary, also is that the duty ratio sum is 1.When pulse signal generator was regulated the duty ratio of first dc pulse signal, the duty ratio of second dc pulse signal also changed thereupon.
In the present embodiment, DC source 101 can be constant-current source, also can be constant pressure source.And a LED unit 105 can be same kind of color LED lamp, one or more series connection; Also can be the LED lamp of same kind of color temperature value, one or more series connection; Equally, the 2nd LED unit 106 also can be same kind of color LED lamp, one or more series connection; Perhaps be LED lamp with a kind of color temperature value, one or more series connection.Preferably; The one LED unit 105 and the 2nd LED unit 106 can be the LED lamp of different-colour value, perhaps are the LED lamp of different colours; Like this; Through the adjusting of first dc pulse signal and second dc pulse signal, realized that the colour temperature of the lamp system that a LED unit and the 2nd LED unit are formed is adjustable, perhaps the color tunable of lamp system.Like a LED unit and the 2nd LED unit, be respectively cold white LEDs and warm white LEDs, the different duty that then the utility model can be through first dc pulse signal, the cold white and warm white ratio of random adjusting obtains the LED of different-colour.
In the disclosed LED regulating system of the foregoing description, the way of realization of first control unit and second control unit has multiple, below describes through three embodiment.
As shown in Figure 3, said first control unit is switching tube S1, and said second control unit is switching tube S2, and switching tube S1, S2 all can be triode, metal-oxide-semiconductor or IGBT pipe.
Inverter comprises the resistance R 1 and switching tube S3 of series connection, and this series arm is connected the output of DC source, and switching tube S3 can be triode, metal-oxide-semiconductor or IGBT pipe.When switching tube S3 was triode S3, the collector electrode of triode S3 linked to each other with an end of resistance R 1, and connects second control unit as the output of inverter; Emitter links to each other with the negative output terminal of DC source, and base stage receives first dc pulse signal as the input of said inverter; When switching tube S3 was metal-oxide-semiconductor S3, drain electrode linked to each other with an end of resistance R 1, and connects second control unit as the output of inverter; Source electrode links to each other with the negative output terminal of DC source, and grid receives first dc pulse signal as the input of said inverter; When switching tube S3 was IGBT pipe S3, collector electrode linked to each other with an end of resistance R 1, and connects second control unit as the output of inverter; Emitter links to each other with the negative output terminal of DC source, and grid links to each other with the pulse signal generator in the external world, receives first dc pulse signal.
When switching tube S1 and switching tube S2 were triode, the collector electrode of triode S1 linked to each other with the negative pole end of a LED unit, and emitter links to each other with the negative output terminal of DC source, and base stage receives first dc pulse signal as the input of said first control unit; The collector electrode of triode S2 links to each other with the negative pole end of the 2nd LED unit; Emitter links to each other with the negative output terminal of DC source; Base stage links to each other with inverter as the input of said second control unit, specifically links to each other with the common port of resistance R 1 with switching tube S3, receives second dc pulse signal.
When switching tube S1 and switching tube S2 were metal-oxide-semiconductor, the drain electrode of metal-oxide-semiconductor S1 linked to each other with the negative pole end of a LED unit, and source electrode links to each other with the negative output terminal of DC source, and grid receives first dc pulse signal as the input of said first control unit; The drain electrode of metal-oxide-semiconductor S2 links to each other with the negative pole end of the 2nd LED unit; Source electrode links to each other with the negative output terminal of DC source; Grid links to each other with inverter as the input of said second control unit, specifically links to each other with the common port of resistance R 1 with switching tube S3, receives second dc pulse signal.
When switching tube S1 and switching tube S2 were the IGBT pipe, IGBT pipe S1 collector electrode linked to each other with the negative pole end of a LED unit, and emitter links to each other with the negative output terminal of DC source, and grid receives first dc pulse signal as the input of said first control unit; IGBT pipe S2 collector electrode links to each other with the negative pole end of the 2nd LED unit; Emitter links to each other with the negative output terminal of DC source; Grid links to each other with inverter as the input of said second control unit, specifically links to each other with the common port of resistance R 1 with switching tube S3, receives second dc pulse signal.
Like Fig. 4 (a) and (b) with (c); Said first control unit comprises: first adjustment pipe S5, the first switching tube S4 and first resistance R 2; Said second control unit comprises: second adjustment pipe S7, second switch pipe S6 and second resistance R 3; Wherein: the first switching tube S4 and second switch pipe S6 all can be triode, metal-oxide-semiconductor or IGBT pipe; The first adjustment pipe S5 and the second adjustment pipe S7 can be triode or metal-oxide-semiconductor, think all in the present embodiment that triode is that example describes, and be concrete:
When the first switching tube S4 is first triode; When second switch pipe S6 was second triode, shown in Fig. 4 (a), the collector electrode of first triode linked to each other with the negative pole of a LED unit; Base stage links to each other with the collector electrode of the first adjustment pipe S5, and emitter links to each other with first resistance R, 2 one ends; The emitter of the other end of first resistance R 2 and the first adjustment pipe S5 all links to each other with the negative output terminal of DC source; The base stage of the first adjustment pipe S5 is connected the common port of first resistance R 2 and first triode through the 3rd resistance R 4.
The collector electrode of second triode links to each other with the negative pole of the 2nd LED unit, and base stage links to each other with the collector electrode of the second adjustment pipe S7, and emitter links to each other with second resistance R, 3 one ends; The emitter of the other end of second resistance R 3 and the second adjustment pipe S7 all links to each other with the negative output terminal of DC source; The base stage of the second adjustment pipe S7 is connected the common port of second resistance R 3 and second triode through the 4th resistance R 5.
When the first switching tube S4 is first metal-oxide-semiconductor; When second switch pipe S6 was second metal-oxide-semiconductor, shown in Fig. 4 (b), the drain electrode of first metal-oxide-semiconductor linked to each other with the negative pole of a LED unit; Grid links to each other with the collector electrode of the first adjustment pipe S5, and source electrode links to each other with first resistance R, 2 one ends; The emitter of the other end of first resistance R 2 and the first adjustment pipe S5 all links to each other with the negative output terminal of DC source; The base stage of the first adjustment pipe S5 is connected the common port of first resistance R 2 and first triode through the 3rd resistance R 4.
The drain electrode of second metal-oxide-semiconductor links to each other with the negative pole of the 2nd LED unit, and grid links to each other with the collector electrode of the second adjustment pipe S7, and source electrode links to each other with second resistance R, 3 one ends; The emitter of the other end of second resistance R 3 and the second adjustment pipe S7 all links to each other with the negative output terminal of DC source; The base stage of the second adjustment pipe S7 is connected the common port of second resistance R 3 and second triode through the 4th resistance R 5.
When the first switching tube S4 is an IGBT pipe; When second switch pipe S6 is the 2nd IGBT pipe; Shown in Fig. 4 (c): the collector electrode of an IGBT links to each other with the negative pole of a LED unit, and grid links to each other with the collector electrode of the first adjustment pipe S5, and emitter links to each other with first resistance R, 2 one ends; The emitter of the other end of first resistance R 2 and the first adjustment pipe S5 all links to each other with the negative output terminal of DC source; The base stage of the first adjustment pipe S5 is connected the common port of first resistance R 2 and first triode through the 3rd resistance R 4.
The collector electrode of the 2nd IGBT pipe links to each other with the negative pole of the 2nd LED unit, and grid links to each other with the collector electrode of the second adjustment pipe S7, and emitter links to each other with second resistance R, 3 one ends; The emitter of the other end of second resistance R 3 and the second adjustment pipe S7 all links to each other with the negative output terminal of DC source; The base stage of the second adjustment pipe S7 is connected the common port of second resistance R 3 and second triode through the 4th resistance R 5.
And identical with the disclosed inverter of the foregoing description, the disclosed inverter of present embodiment comprises the resistance R 1 and switching tube S3 of series connection, and this series arm is connected the output of DC source, and switching tube S3 can be triode, metal-oxide-semiconductor or IGBT pipe.The common port of resistance R 1 and switching tube S3 links to each other with the second adjustment pipe S7 collector electrode.
In the present embodiment; The effect that first resistance R 2, first is adjusted pipe S5 and the 3rd resistance R 4 is: when switching tube S4 conducting; Electric current on first resistance R 2 is the electric current of a LED unit; Closed-loop adjustment through the first adjustment pipe S5 can realize the electric current on first resistance R 2 is limited in a certain scope, and the amplitude that is about to the pulse current of a LED unit is limited in certain scope.Equally, the effect of second resistance R 3, the second adjustment pipe S7 and the 4th resistance R 5 and first resistance R 2, first adjustment effect of managing S5 and the 3rd resistance R 4 is identical.
In the disclosed scheme of present embodiment; The 3rd resistance R 4 and the 4th resistance R 5 can be removed; That is: the base stage of the first adjustment pipe S5 directly is connected the common port of first resistance R 2 and the first switching tube S4, and the base stage of the second adjustment pipe S7 directly is connected the common port of second resistance R 3 and second switch pipe S6.
When the adjustment pipe of first in present embodiment S5 and the second adjustment pipe S7 are metal-oxide-semiconductor; The drain electrode of metal-oxide-semiconductor is equivalent to the collector electrode of triode; Grid is equivalent to the base stage of triode; Source electrode is equivalent to the emitter of triode, is annexation such as the disclosed content of above-mentioned embodiment that first of metal-oxide-semiconductor is adjusted pipe S5 and the second adjustment pipe S7 and miscellaneous part, only need three ends of triode be replaced with corresponding three ends of metal-oxide-semiconductor and get final product.
And, triode and the grid of base stage and metal-oxide-semiconductor can be referred to as the control end of adjustment pipe.
Shown in Figure 5; Said first control unit comprises: first filter circuit 201, the first integrated operational amplifier U1, first compensating circuit 202, the 3rd adjustment pipe S8 and the 5th resistance R 6; Said second control unit comprises: second filter circuit 203, the second integrated operational amplifier U2, second compensating circuit 204, the 4th adjustment pipe S9 and the 6th resistance R 7, wherein:
The 3rd adjustment pipe S8 and the 4th adjustment pipe S9 all can be triode, metal-oxide-semiconductor or IGBT pipe.
When the 3rd adjustment pipe S8 was the 3rd triode, the collector electrode of this triode linked to each other with the negative pole of a LED unit, and base stage links to each other with the output of the first integrated operational amplifier U1, and emitter links to each other with the 5th resistance R 6 one ends; When the 3rd adjustment pipe S8 was the 3rd metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of a LED unit, and grid links to each other with the output of the first integrated operational amplifier U1, and source electrode links to each other with the 5th resistance R 6 one ends; When the 3rd adjustment pipe S8 was the 3rd IGBT pipe, the collector electrode of this IGBT linked to each other with the negative pole of a LED unit, and grid links to each other with the output of the first integrated operational amplifier U1, and emitter links to each other with the 5th resistance R 6 one ends.
And an end of the 5th resistance R 6 also links to each other with the negative-phase input of the first integrated operational amplifier U1, and the other end of the 5th resistance R 6 links to each other with the negative output terminal of DC source; First filter circuit 201 links to each other with the normal phase input end of the first integrated operational amplifier U1; First compensating circuit, 202 two ends are connected on the negative-phase input and output of the first integrated operational amplifier U1.
When the 4th adjustment pipe S9 was the 4th triode, the collector electrode of this triode linked to each other with the negative pole of the 2nd LED unit, and base stage links to each other with the output of the second integrated operational amplifier U2, and emitter links to each other with the 6th resistance R 7 one ends; When the 4th adjustment pipe S9 was the 4th metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the output of the second integrated operational amplifier U2, and source electrode links to each other with the 6th resistance R 7 one ends; When the 4th adjustment pipe S9 was the 4th IGBT pipe, the collector electrode of this IGBT linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the output of the second integrated operational amplifier U2, and emitter links to each other with the 6th resistance R 7 one ends.
And an end of the 6th resistance R 7 also links to each other with the negative-phase input of the second integrated operational amplifier U2, and the other end of the 6th resistance R 7 links to each other with the negative output terminal of DC source; Second filter circuit 203 links to each other with the normal phase input end of the second integrated operational amplifier U2; Second compensating circuit, 204 two ends are connected on the negative-phase input and output of the second integrated operational amplifier U2.
Identical with above-mentioned two disclosed inverters of embodiment, the disclosed inverter of present embodiment comprises: the resistance R 1 and the switching tube S3 of series connection, and this series arm is connected the output of DC source, and switching tube S3 can be triode, metal-oxide-semiconductor or IGBT pipe.The control end of switching tube S3 is imported first dc pulse signal as the input of inverter, and the common port of resistance R 1 and switching tube S3 links to each other with the input of second filter circuit 203 as the output of inverter.
In the disclosed scheme of present embodiment; Acting as of first control circuit: first dc pulse signal is input in first filter circuit 201; After 201 filtering of first filter circuit, be converted into dc level signal; Act on the normal phase input end of the first integrated operational amplifier U1 again, as the reference signal of the first integrated operational amplifier U1, the sample rate current signal on the 5th resistance R 6 acts on the negative-phase input of the first integrated operational amplifier U1; The amplitude size of filtered dc level signal (i.e. the reference signal of the first integrated operational amplifier U1); Equal the product of the amplitude and the duty ratio of first dc pulse signal; Sample rate current signal on the 5th resistance R 6 and this reference signal are relatively; First integrated operational amplifier U1 output signal controlling the 3rd adjustment pipe S8 through the impedance variations of the 3rd adjustment pipe S8, controls the input current of a LED unit.Based on the effect of the 3rd adjustment pipe S8, the input current value that makes a LED unit is the current value that first dc pulse signal is set.
Equally, the effect of second control circuit is identical with the effect of first control circuit, and difference is that the signal of input first control circuit is different with the signal of input second control circuit, is respectively first dc pulse signal and second dc pulse signal.
To sum up in first control unit and second control unit of three embodiment explanations; Switching tube refers to is triode, metal-oxide-semiconductor or the IGBT pipe that is operated under saturated, the cut-off characteristics, the adjustment pipe refers to be operated under the linear characteristic under triode, metal-oxide-semiconductor or IGBT pipe.
Need to prove; In this article; Relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint relation or the order that has any this reality between these entities or the operation.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a LED regulating system is characterized in that, comprising: DC source, first control unit, second control unit, a LED unit, the 2nd LED unit and inverter, wherein:
Be connected the output of DC source after said first control unit and the LED units in series, be used for regulating the electric current of a said LED unit according to first dc pulse signal;
Said inverter output links to each other with second control unit; To be used to receive said first dc pulse signal be second dc pulse signal with its anti-phase and offer second control unit, and this second dc pulse signal and the first dc pulse signal duty ratio sum are 1;
Be connected the output of DC source after said second control unit and the 2nd LED units in series, be used for regulating the electric current of said the 2nd LED unit according to second dc pulse signal.
2. system according to claim 1 is characterized in that, said DC source is constant pressure source or constant-current source.
3. system according to claim 1 is characterized in that, a said LED unit is the LED lamp of the color of the same race of one or more series connection, perhaps, is the LED lamp of the colour temperature of the same race of one or more series connection.
4. system according to claim 1 is characterized in that, said the 2nd LED unit is the LED lamp of the color of the same race of one or more series connection, perhaps, is the LED lamp of the colour temperature of the same race of one or more series connection.
5. system according to claim 1 is characterized in that, said first control unit and second control unit are switching tube, and said switching tube is triode, metal-oxide-semiconductor or IGBT.
6. system according to claim 1 is characterized in that, said first control unit comprises: the first adjustment pipe, first switching tube and first resistance, and wherein: the said first adjustment pipe is triode;
When said first switching tube was first triode, the collector electrode of this triode linked to each other with the negative pole of a LED unit, and base stage links to each other with the collector electrode of the first adjustment pipe, and emitter links to each other with first resistance, one end; When said first switching tube was first metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of a LED unit, and grid links to each other with the collector electrode of the first adjustment pipe, and source electrode links to each other with first resistance, one end; When said first switching tube was an IGBT, the collector electrode of this IGBT linked to each other with the negative pole of a LED unit, and grid links to each other with the collector electrode of the first adjustment pipe, and emitter links to each other with first resistance, one end;
The emitter of the other end of said first resistance and the first adjustment pipe all links to each other with the negative output terminal of DC source; The base stage of the said first adjustment pipe is connected the common port of first resistance and first switching tube;
Said second control unit comprises: the second adjustment pipe, second switch pipe and second resistance, and wherein: the said second adjustment pipe is triode;
When said second switch pipe was second triode, the collector electrode of this triode linked to each other with the negative pole of the 2nd LED unit, and base stage links to each other with the collector electrode of the second adjustment pipe, and emitter links to each other with second resistance, one end; When said second switch pipe was second metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the collector electrode of the second adjustment pipe, and source electrode links to each other with second resistance, one end; When said second switch pipe was the 2nd IGBT, the collector electrode of this IGBT linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the collector electrode of the second adjustment pipe, and emitter links to each other with second resistance, one end;
The emitter of the other end of said second resistance and the second adjustment pipe all links to each other with the negative output terminal of DC source; The base stage of the said second adjustment pipe is connected the common port of second resistance and second switch pipe.
7. system according to claim 1 is characterized in that, said first control unit comprises: the first adjustment pipe, first switching tube and first resistance, and wherein: the said first adjustment pipe is metal-oxide-semiconductor;
When said first switching tube was first triode, the collector electrode of this triode linked to each other with the negative pole of a LED unit, and base stage links to each other with the drain electrode of the first adjustment pipe, and emitter links to each other with first resistance, one end; When said first switching tube was first metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of a LED unit, and grid links to each other with the drain electrode of the first adjustment pipe, and source electrode links to each other with first resistance, one end; When said first switching tube was an IGBT, the collector electrode of this IGBT linked to each other with the negative pole of a LED unit, and grid links to each other with the drain electrode of the first adjustment pipe, and emitter links to each other with first resistance, one end;
The source electrode of the other end of said first resistance and the first adjustment pipe all links to each other with the negative output terminal of DC source; The grid of the said first adjustment pipe is connected the common port of first resistance and first switching tube;
Said second control unit comprises: the second adjustment pipe, second switch pipe and second resistance, and wherein: the said second adjustment pipe is metal-oxide-semiconductor;
When said second switch pipe was second triode, the collector electrode of this triode linked to each other with the negative pole of the 2nd LED unit, and base stage links to each other with the drain electrode of the second adjustment pipe, and emitter links to each other with second resistance, one end; When said second switch pipe was second metal-oxide-semiconductor, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the drain electrode of the second adjustment pipe, and source electrode links to each other with second resistance, one end; When said second switch pipe was the 2nd IGBT, the collector electrode of this IGBT linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the drain electrode of the second adjustment pipe, and emitter links to each other with second resistance, one end;
The source electrode of the other end of said second resistance and the second adjustment pipe all links to each other with the negative output terminal of DC source; The grid of the said second adjustment pipe is connected the common port of second resistance and second switch pipe.
8. system according to claim 1 is characterized in that, said first control unit comprises: first filter circuit, first integrated operational amplifier, first compensating circuit, the 3rd adjustment pipe and the 5th resistance, wherein:
When the said the 3rd adjusted Guan Weidi three triodes, the collector electrode of this triode linked to each other with the negative pole of a LED unit, and base stage links to each other with the output of first integrated operational amplifier, and emitter links to each other with the 5th resistance one end; When the said the 3rd adjusted Guan Weidi three metal-oxide-semiconductors, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of a LED unit, and grid links to each other with the output of first integrated operational amplifier, and source electrode links to each other with the 5th resistance one end; When the said the 3rd adjusted Guan Weidi three IGBT, the collector electrode of this IGBT linked to each other with the negative pole of a LED unit, and grid links to each other with the output of first integrated operational amplifier, and emitter links to each other with the 5th resistance one end;
One end of said the 5th resistance also links to each other with the negative-phase input of first integrated operational amplifier, and the other end links to each other with the negative output terminal of DC source; Said first filter circuit links to each other with the normal phase input end of first integrated operational amplifier; The first compensating circuit two ends are connected to the negative-phase input and the output of first integrated operational amplifier;
Said second control unit comprises: second filter circuit, second integrated operational amplifier, second compensating circuit, the 4th adjustment pipe and the 6th resistance, wherein:
When the said the 4th adjusted Guan Weidi four triodes, the collector electrode of this triode linked to each other with the negative pole of the 2nd LED unit, and base stage links to each other with the output of second integrated operational amplifier, and emitter links to each other with the 6th resistance one end; When the said the 4th adjusted Guan Weidi four metal-oxide-semiconductors, the drain electrode of this metal-oxide-semiconductor linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the output of second integrated operational amplifier, and source electrode links to each other with the 6th resistance one end; When the said the 4th adjusted Guan Weidi four IGBT, the collector electrode of this IGBT linked to each other with the negative pole of the 2nd LED unit, and grid links to each other with the output of second integrated operational amplifier, and emitter links to each other with the 6th resistance one end;
One end of said the 6th resistance also links to each other with the negative-phase input of second integrated operational amplifier, and the other end links to each other with the negative output terminal of DC source; Said second filter circuit links to each other with the normal phase input end of second integrated operational amplifier; The second compensating circuit two ends are connected to the negative-phase input and the output of second integrated operational amplifier.
9. according to claim 6 or 7 described systems, it is characterized in that the control end of the said first adjustment pipe is connected with the common port of first resistance with first switching tube through the 3rd resistance; The control end of the said second adjustment pipe is connected with the common port of second resistance with the second switch pipe through the 4th resistance.
10. according to any described system of claim 1-8; It is characterized in that; Said inverter comprises the resistance and the switching tube of series connection, and this series arm is connected the output of said DC source, and said control end of switching tube is the input of said inverter; The common port of said resistance and switching tube is the output of said inverter, and the switching tube of said composition inverter is triode, metal-oxide-semiconductor or IGBT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120205823XU CN202103913U (en) | 2011-06-17 | 2011-06-17 | Led adjusting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120205823XU CN202103913U (en) | 2011-06-17 | 2011-06-17 | Led adjusting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103913U true CN202103913U (en) | 2012-01-04 |
Family
ID=45389910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120205823XU Expired - Fee Related CN202103913U (en) | 2011-06-17 | 2011-06-17 | Led adjusting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202103913U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568381A (en) * | 2012-01-19 | 2012-07-11 | 开源集成电路(苏州)有限公司 | LED unit board, LED display screen and signal transmission method |
| CN103052214A (en) * | 2012-12-06 | 2013-04-17 | 广州广日电气设备有限公司 | System and method for adjusting light and color temperature of lamp |
| CN103716957A (en) * | 2013-11-28 | 2014-04-09 | 青岛歌尔声学科技有限公司 | Light emitting diode (LED) control circuit and method |
| CN104442078A (en) * | 2013-09-16 | 2015-03-25 | 深圳市同盛绿色科技有限公司 | Optical anti-counterfeit system, mobile terminal and anti-counterfeit label |
| CN104661383A (en) * | 2013-11-21 | 2015-05-27 | 青岛润鑫伟业科贸有限公司 | Light emitting diode dimming circuit |
| CN105282919A (en) * | 2014-06-19 | 2016-01-27 | 恩智浦有限公司 | Circuit and lighting unit for dimmable lighting applications |
| CN105491761A (en) * | 2015-12-29 | 2016-04-13 | 生迪智慧科技有限公司 | LED lamp capable of adjusting color temperature and color temperature adjustment method for LED lamp |
| CN105704856A (en) * | 2016-02-02 | 2016-06-22 | 林德（中国）叉车有限公司 | Circuit capable of adjusting and controlling output via cooperation between control interfaces and PWM interfaces |
| CN106032883A (en) * | 2015-03-20 | 2016-10-19 | 苏州璨宇光学有限公司 | LED light source device and control method thereof |
| CN106132003A (en) * | 2016-06-30 | 2016-11-16 | 成都芯源***有限公司 | Dual-channel LED driver and control method thereof |
| CN106163013A (en) * | 2016-08-30 | 2016-11-23 | 天津睿泽科技发展有限公司 | LED drive circuit based on the colour temperature modulation of 2.4G |
| CN107484290A (en) * | 2017-06-26 | 2017-12-15 | 厦门阳光恩耐照明有限公司 | A kind of LED toning circuits of single channel pwm signal |
| CN111372358A (en) * | 2020-04-24 | 2020-07-03 | 深圳市海洋王照明工程有限公司 | LED drive control circuit, LED lamp and LED drive system |
-
2011
- 2011-06-17 CN CN201120205823XU patent/CN202103913U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568381A (en) * | 2012-01-19 | 2012-07-11 | 开源集成电路(苏州)有限公司 | LED unit board, LED display screen and signal transmission method |
| CN103052214A (en) * | 2012-12-06 | 2013-04-17 | 广州广日电气设备有限公司 | System and method for adjusting light and color temperature of lamp |
| CN104442078B (en) * | 2013-09-16 | 2017-05-17 | 深圳市同盛绿色科技有限公司 | Optical anti-counterfeit system, mobile terminal and anti-counterfeit label |
| CN104442078A (en) * | 2013-09-16 | 2015-03-25 | 深圳市同盛绿色科技有限公司 | Optical anti-counterfeit system, mobile terminal and anti-counterfeit label |
| CN104661383A (en) * | 2013-11-21 | 2015-05-27 | 青岛润鑫伟业科贸有限公司 | Light emitting diode dimming circuit |
| CN103716957A (en) * | 2013-11-28 | 2014-04-09 | 青岛歌尔声学科技有限公司 | Light emitting diode (LED) control circuit and method |
| CN105282919A (en) * | 2014-06-19 | 2016-01-27 | 恩智浦有限公司 | Circuit and lighting unit for dimmable lighting applications |
| CN106032883A (en) * | 2015-03-20 | 2016-10-19 | 苏州璨宇光学有限公司 | LED light source device and control method thereof |
| TWI565357B (en) * | 2015-03-20 | 2017-01-01 | 蘇州璨宇光學有限公司 | Light-emitting diode light source device and controlling method thereof |
| CN105491761A (en) * | 2015-12-29 | 2016-04-13 | 生迪智慧科技有限公司 | LED lamp capable of adjusting color temperature and color temperature adjustment method for LED lamp |
| CN105491761B (en) * | 2015-12-29 | 2018-08-14 | 生迪智慧科技有限公司 | The LED light of adjustable color temperature and the color temperature adjusting method of LED light |
| CN105704856A (en) * | 2016-02-02 | 2016-06-22 | 林德（中国）叉车有限公司 | Circuit capable of adjusting and controlling output via cooperation between control interfaces and PWM interfaces |
| CN106132003A (en) * | 2016-06-30 | 2016-11-16 | 成都芯源***有限公司 | Dual-channel LED driver and control method thereof |
| CN106132003B (en) * | 2016-06-30 | 2017-12-26 | 成都芯源***有限公司 | Dual-channel LED driver and control method thereof |
| CN106163013A (en) * | 2016-08-30 | 2016-11-23 | 天津睿泽科技发展有限公司 | LED drive circuit based on the colour temperature modulation of 2.4G |
| CN107484290A (en) * | 2017-06-26 | 2017-12-15 | 厦门阳光恩耐照明有限公司 | A kind of LED toning circuits of single channel pwm signal |
| CN111372358A (en) * | 2020-04-24 | 2020-07-03 | 深圳市海洋王照明工程有限公司 | LED drive control circuit, LED lamp and LED drive system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202103913U (en) | Led adjusting system | |
| CN107454711B (en) | A kind of multipath LED drive circuit, driving method and LED drive power | |
| CN102752899B (en) | A kind of circuit adjusting LED current | |
| CN202172516U (en) | Brightness and color temperature adjustable LED lamp | |
| CN105788525A (en) | Driving method and driving circuit of LED light group, backlight and display device | |
| CN207926974U (en) | A kind of colour temperature adjusts circui | |
| CN206743604U (en) | LED backlight mixes light adjusting circuit and display device | |
| CN106793257A (en) | Intelligent dimming color-temperature regulating system | |
| CN108650748A (en) | A kind of constant pressure dimming power source device being compatible with a variety of dimming modes | |
| CN205160868U (en) | Led circuit and led lamp | |
| CN103997835A (en) | LED illumination control circuit for silicon controlled light modulator to achieve light and color synchronous adjustment and method thereof | |
| CN202085347U (en) | Circuit capable of adjusting LED current | |
| CN207340239U (en) | The constant-current drive circuit of LED light light modulation | |
| CN205196024U (en) | Whole back frame light governing system of distributing type principal and subordinate based on CAN bus | |
| CN204518159U (en) | A kind of light sensation detects the LED drive device automatically regulating colour temperature | |
| CN202998609U (en) | Led constant current dimming power supply | |
| CN204836688U (en) | Mixing of colors temperature of adjusting luminance LED fluorescent lamp circuit | |
| CN208210372U (en) | A kind of light modulation toning circuit | |
| CN202634787U (en) | LED light fixture with sectional color-temperature adjustment | |
| CN103068127B (en) | A kind of LED lamp and two-color LED dimming circuit | |
| CN109769320A (en) | A kind of two-wire adjusts the control circuit and control device of lighting programmers | |
| CN203349030U (en) | Wire-saving LED lamp string, wire-saving LED lamp string cluster and output circuit of wire-saving LED lamp string cluster | |
| CN103096567A (en) | Multi-channel current control circuit and control method | |
| CN202617454U (en) | Light-emitting diode (LED) driving circuit with light dimming function | |
| CN206118121U (en) | LED lamp strip is adjusted luminance to mix colours and is reviewed circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG THINKLUX LIGHTING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: INVENTRONICS (HANGZHOU), INC. Effective date: 20130327 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310053 HANGZHOU, ZHEJIANG PROVINCE TO: 315002 HANGZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130327 Address after: Hangzhou City, Zhejiang province Binjiang District 315002 shore road 95 2 Building 3 layer Patentee after: Thinklux (Zhejiang) Lighting Technology Co., Ltd. Address before: Hangzhou City, Zhejiang province 310053 Binjiang District Dongxin Road No. 66 East D block 2 layer communication Patentee before: LED ONE (Hangzhou) Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151103 Address after: 528226, Guangdong Province, Nanhai District, Foshan province Luo village, Guangdong new light industry base A8 Building 5 floor Patentee after: New light sources re-invent industry center, associating Guangdong, Nanhai District Foshan City Address before: Hangzhou City, Zhejiang province Binjiang District 315002 shore road 95 2 Building 3 layer Patentee before: Thinklux (Zhejiang) Lighting Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20170617 |