CN102404905A - Two-wire type light emitting diode light adjusting system - Google Patents
Two-wire type light emitting diode light adjusting system Download PDFInfo
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- CN102404905A CN102404905A CN2010102837224A CN201010283722A CN102404905A CN 102404905 A CN102404905 A CN 102404905A CN 2010102837224 A CN2010102837224 A CN 2010102837224A CN 201010283722 A CN201010283722 A CN 201010283722A CN 102404905 A CN102404905 A CN 102404905A
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Abstract
A two-wire type light emitting diode (LED) light adjusting system is used for performing light adjusting control on an LED lamp module and comprises a phase modulation circuit, an LED driving circuit and a controller. The phase modulation circuit generates a phase modulation power supply, and the controller detects the phase modulation power supply. When the controller detects the phase modulation power supplies with different wave forms, the controller correspondingly controls the LED driving circuit so as to enable the LED lamp module to display light sources with different brightness.
Description
Technical field
The present invention relates to a kind of adjusting control circuit, particularly relate to a kind of light-emitting diode (Light Emitting Diode, LED) twin wire LED light adjusting system of lamp module of being applied to.
Background technology
Most consumers utilizes conventional bulb that illumination is provided, and traditional osram lamp also is the present illuminations of main flow on the market.Yet the usefulness of traditional osram lamp is very poor, in the electric energy that consumes, approximately has only 10% to be converted into luminous energy, and remaining electric energy overwhelming majority becomes useless heat energy.
Compared to traditional osram lamp, (Light Emitting Diode, LED) bulb can almost be converted into luminous energy with the electric energy that is consumed to light-emitting diode.The LED bulb also is a kind of almost athermic light source.In addition, the LED bulb start-up time more traditional osram lamp start-up time shorter, that is the more traditional osram lamp of LED bulb more can arrive stable brightness apace.Plurality of advantages such as therefore, in comparison, that the LED bulb has is energy-conservation, low heat emission, long service life, the speed of lighting are fast.Along with the improvement of technology and cost, conventional bulb has gradually by the substituted trend of LED bulb.
Yet, the custom when the LED bulb may force the user to change some use conventional bulb, the methods of mode that for example changes the bulb or the light modulation of control bulb etc. cause user's inconvenience.Therefore, how the existing line framework is done minimum change, and be the light regulating technology of LED bulb, reducing user's inconvenience, be an important problem in the alternation of generations of this illuminating engineering the light regulating technology transition of conventional bulb.
Summary of the invention
The present invention provides a kind of twin wire light-emitting diode, and (Light Emitting Diode, LED) light adjusting system are used for a LED lamp module is carried out brightness adjustment control.Twin wire LED light adjusting system comprises a phase-modulation circuit, a led drive circuit and a controller.Phase-modulation circuit is coupled to an AC power, is used for producing a phase modulated power supply; Wherein this phase-modulation circuit is partly blocked this AC power so that the waveform of this phase modulated power supply has an angle of flow not.Led drive circuit is coupled to this LED lamp module and this phase-modulation circuit, is used for receiving this phase modulated power supply to drive this LED lamp module.Controller is coupled between this phase-modulation circuit and this led drive circuit, is used for this angle of flow not according to the waveform of this phase modulated power supply, adjusts the mode that this led drive circuit drives this LED lamp module.
Description of drawings
Fig. 1 is the sketch map of explanation twin wire LED light adjusting system of the present invention.
Fig. 2 is the sketch map of the embodiment of explanation phase-modulation circuit of the present invention.
The sketch map of first waveform of the unadjusted phase modulated power supply that Fig. 3 is produced for explanation phase-modulation circuit of the present invention.
The sketch map of second waveform of the phase modulated power supply that Fig. 4 is produced for explanation phase-modulation circuit of the present invention.
The sketch map of the 3rd waveform of the phase modulated power supply that Fig. 5 is produced for explanation phase-modulation circuit of the present invention.
The sketch map of the 4th waveform of the phase modulated power supply that Fig. 6 is produced for explanation phase-modulation circuit of the present invention.
The reference numeral explanation
10 twin wire LED light adjusting systems
11 phase-modulation circuits
12 controllers
13 rectification circuits
14 led drivers
15 LED lamp modules
O1, O2 AC power supplies input
SW1, SW2, SW3 switch
D1, D2 diode
DB1 two-way exchange diac
Q1 two-way exchange trigger triode
R1 resistance
C1 electric capacity
Vac phase modulated power supply
The Vdc direct voltage
W1 first waveform
W2 second waveform
W3 the 3rd waveform
W4 the 4th waveform
Embodiment
Please refer to Fig. 1.Fig. 1 is the sketch map of explanation twin wire LED light adjusting system 10 of the present invention.Twin wire LED light adjusting system 10 comprises a phase-modulation circuit 11, a controller 12, a rectification circuit 13, a led drive circuit 14 and a LED lamp module 15.Phase-modulation circuit 11 is coupled to an AC AC power.As shown in the figure, the AC AC power comprises two input O1 and O2, and with the input AC electric energy, wherein the AC AC power can be a civil power.Phase-modulation circuit 11 is coupled to the input O of AC AC power
2And between the rectification circuit 13.The AC AC power provides AC energy to phase-modulation circuit 11; Phase-modulation circuit 11 will be adjusted later AC energy (that is phase-modulation circuit 11 produced phase modulated power supply Vac) again and offer rectification circuit 13.Controller 12 is coupled between phase-modulation circuit 11 and the led drive circuit 14, is used for the phase modulated power supply Vac of detected phase modulation circuit output.Rectification circuit 13 is coupled between phase-modulation circuit 11 and the led driver 14, is used for phase modulated power supply Vac is given rectification to produce a direct current voltage Vdc.Led drive circuit 14 is coupled to controller 12, LED lamp module 15 and rectification circuit 13 simultaneously, is used for receiving this direct voltage Vdc.Phase-modulation circuit 11 produces the phase modulated power supply Vac of multiple waveform.Controller 12 is controlled this led drive circuit and is made it produce the light source of different brightness to drive this LED lamp module 15 according to the phase modulated power supply Vac of different wave.
Please refer to Fig. 2.Fig. 2 is the sketch map of the embodiment of explanation phase-modulation circuit 11 of the present invention.Phase-modulation circuit 11 comprises diode D1, D2, a resistance R 1, a capacitor C 1, one two-way interchange diac (DIAC) DB1 and two-way exchange trigger triode (TRIAC) Q1.Two-way exchange trigger triode Q1 can be considered thyristor (Silicon ControlledRectifier, switching device SCR), and a shared grid that is equivalent to two parallel connected in reverse phase.Thyristor is a grid control element, when conducting, can be considered a diode.Therefore, the effect of two-way exchange trigger triode Q1 is similar to thyristor, but its load current direction can be two-way.Two-way exchange diac DB1 is coupled to two-way exchange trigger triode Q1, is used for triggering two-way exchange trigger triode Q1.
In one embodiment of the invention, phase-modulation circuit 11 also comprises switch SW 1, SW2, the SW3 of series connection.Switch SW 2 is coupled between switch SW 1 and the SW3, and switch SW 1, SW2 are parallel to diode D1, D2 respectively.The input O2 of AC AC power is coupled to switch SW 3.The user can make the phase modulated power supply Vac of phase-modulation circuit 11 generation different wave by switch SW 1, SW2, SW3, so that LED lamp module 15 is carried out brightness adjustment control.For instance, press the brightness that switch SW 1 can reduce LED lamp module 15 light sources; Pressing switch SW 3 can increase the brightness of LED lamp module 15 light sources; And switch SW 2 can be opened LED lamp module 15 or close.It is noted that the switch SW 1 of this embodiment, SW2, SW3 and nonessential.As long as the waveform of controller 12 ability detected phase modulation power sources, and 14 pairs of LED lamp modules of control led driver 15 are carried out corresponding actions (like actions such as increase/reduction brightness or ON/OFF), spirit all according to the invention.
Please refer to Fig. 3.The sketch map of the first waveform W1 of the unadjusted phase modulated power supply Vac that Fig. 3 is produced for explanation phase-modulation circuit 11 of the present invention.In present embodiment, switch SW 1, SW2, SW3 conducting (that is the user does not press any switch).Therefore, phase-modulation circuit 11 directly exports this AC energy to rectification circuit 13 after the AC AC power receives an AC energy.This AC energy that phase-modulation circuit 11 is received by the AC AC power is a sine wave, so the phase modulated power supply Vac that phase-modulation circuit 11 is exported also is identical sine wave.In this embodiment, it is the first waveform W1 that controller 12 detects phase modulated power supply Vac, and controller 12 control led drive circuits 14 are to open LED lamp module 15.
Please refer to Fig. 4.The sketch map of the second waveform W2 of the phase modulated power supply Vac that Fig. 4 is produced for explanation phase-modulation circuit 11 of the present invention.In present embodiment, not conducting of switch SW 3, and switch SW 1, SW2 conducting (that is the user presses switch SW 3).When switch SW 3 not during conducting, phase-modulation circuit 11 can be passed through via diode D2 by the AC energy that the AC AC power is received.Yet because diode D2 is reverse in the direction of this AC energy, this AC energy only has the part of negative voltage can pass through diode D2.The positive voltage part of this AC energy then can be charged via resistance R 1 and capacitor C 1 formed RC circuit.Therefore, as shown in Figure 4, the second waveform W2 of phase modulated power supply Vac is in the angle of flow not of existence one between phase place 0 degree of phase weekly and 90 degree.In this embodiment, it is the second waveform W2 that controller 12 detects phase modulated power supply Vac, and controller 12 is controlled the brightness that led drive circuit 14 increases LED lamp module 15 accordingly.
Please refer to Fig. 5.The sketch map of the 3rd waveform W3 of the phase modulated power supply Vac that Fig. 5 is produced for explanation phase-modulation circuit 11 of the present invention.In present embodiment, not conducting of switch SW 1, and switch SW 2, SW3 conducting (that is the user presses switch SW 1).When switch SW 1 not during conducting, phase-modulation circuit 11 can be passed through via diode D1 by the AC energy that the AC AC power is received.Yet because diode D1 is forward in the direction of this AC energy, this AC energy only has the part of positive voltage can pass through diode D1.The negative voltage part of this AC energy then can be charged to it via resistance R 1 and capacitor C 1 formed RC circuit.Therefore, as shown in Figure 5, the 3rd waveform W3 of phase modulated power supply Vac is in the angle of flow not of existence one between phase place 180 degree of phase weekly and 270 degree.In this embodiment, it is the 3rd waveform W3 that controller 12 detects phase modulated power supply Vac, and controller 12 is controlled the brightness that led drive circuit 14 reduces LED lamp module 15 accordingly.
Please refer to Fig. 6.The sketch map of the 4th waveform W4 of the phase modulated power supply Vac that Fig. 6 is produced for explanation phase-modulation circuit 11 of the present invention.In present embodiment, not conducting of switch SW 2 (that is the user presses switch SW 2).When switch SW 2 not during conducting, phase-modulation circuit 11 can't pass through diode D1 or D2 by the AC energy that the AC AC power is received.The positive voltage of this AC energy and negative voltage partly all can pass through resistance R 1 and capacitor C 1 formed RC circuit charges to it.Therefore, as shown in Figure 6, the 4th waveform W4 of phase modulated power supply Vac is between phase place 0 degree of phase weekly and 90 degree, and respectively there is an angle of flow not between spending in phase place 180 degree and 270.In present embodiment, it is the 4th waveform W4 that controller 12 detects phase modulated power supply Vac, and the control led drive circuit 14 that controller is corresponding is closed LED lamp module 15.
By adjustment resistance R 1 and capacitor C 1, AC energy also can change the time of RC circuit charging to some extent, that is the not angle of flow degree of phase modulated power supply Vac waveform also can change accordingly.For instance, if phase modulated power supply Vac waveform is excessive in the not angle of flow of phase weekly, for example at the not angle of flow of the positive string section of waveform greater than phase place 90 degree, the AC energy that the too much phase-modulation circuit 11 of RC circuitry consumes is received by the AC AC power.The RC circuitry consumes too much AC energy of input possibly cause twin wire LED light adjusting system 10 other follow-up elements to operate.Comparatively speaking, if the not angle of flow of phase is too small weekly for phase modulated power supply Vac waveform, controller 12 possibly be difficult to differentiate this not difference of the angle of flow and signal noise, thereby waveform that can't identification phase modulated power supply Vac.In present embodiment, the not angle of flow of phase modulated power supply Vac waveform is present in weekly between phase place 0 degree and 90 degree of phase, and/or between phase place 180 degree and 270 degree.
So, twin wire LED light adjusting system 10 of the present invention can be with analog input (for example switch SW 1～SW3) digitlization of embodiment.For instance, when controller 12 detected phase modulated power supply Vac and is the first waveform W1, the second waveform W2, the 3rd waveform W3 or the 4th waveform W4, controller 12 can utilize " 00 ", " 01 ", " 10 " or " 11 " equipotential to represent accordingly.Further say; Variation along with phase modulated power supply Vac waveform; The digital manifestation mode of controller 12 change relatively (for example by 2 " 000 ", " 001 ", " 010 " that increase to 3 ... etc.), controller 12 control led drive circuits 14 are so that LED lamp module 15 produces different brightness or action is also corresponding increases.
Note that when controller 12 detects the different wave of phase modulated power supply Vac the 14 performed actions of controller 12 corresponding control led drive circuits are not limited to the foregoing description.Controller 12 is according to the phase modulated power supply Vac of different wave, the action carried out of the led drive circuit that requires 14 can be prior setting.For instance, when controller 12 detected the second waveform W2 of phase modulated power supply Vac, controller 12 was not limited to make it increase the brightness of the light source that LED lamp module 15 produced like control led drive circuit 14 among the above-mentioned embodiment.In another embodiment, when detecting phase modulated power supply Vac and be the second waveform W2,, can adjust led drive circuit 14 and produce with driving LED lamp module 15 as reduce different actions such as brightness by setting controller 12 in advance.
In addition, the performed action of controller 12 control led drive circuits is not limited only to LED lamp module 15 is carried out actions such as brightness adjustment control or ON/OFF.In another embodiment, when detecting the specific waveforms of phase modulated power supply Vac, controller 12 may command led drive circuits 14 are so that LED lamp module 15 produces special-effects such as for example flicker.
In sum, phase-modulation circuit of the present invention can produce the phase modulated power supply of multiple waveform, but the waveform of controller detected phase modulation power source controls accordingly led drive circuit the LED lamp module is carried out brightness adjustment control.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (11)
1. a twin wire dimming light-emitting diode system is used for a light-emitting diode lamp module is carried out brightness adjustment control, comprises:
One phase-modulation circuit is coupled to an AC power, produces a phase modulated power supply; Wherein this phase-modulation circuit is partly blocked this AC power so that the waveform of this phase modulated power supply has an angle of flow not;
One LED driving circuit is coupled to this light-emitting diode lamp module and this phase-modulation circuit, is used for receiving this phase modulated power supply to drive this light-emitting diode lamp module; And
One controller is coupled between this phase-modulation circuit and this LED driving circuit, is used for this angle of flow not according to the waveform of this phase modulated power supply, adjusts the mode that this LED driving circuit drives this light-emitting diode lamp module.
2. twin wire dimming light-emitting diode as claimed in claim 1 system also comprises:
One rectification appliance is coupled between this phase-modulation circuit and this LED driving circuit.
3. twin wire dimming light-emitting diode as claimed in claim 1 system, wherein this phase-modulation circuit comprises one first switch, a second switch and one the 3rd switch.
4. twin wire dimming light-emitting diode as claimed in claim 3 system, wherein when this first switch, second switch and the 3rd switch all during conducting, this phase modulated power supply that this phase-modulation circuit produces is a primary sinusoid.
5. twin wire dimming light-emitting diode as claimed in claim 4 system, wherein when this phase modulated power supply was this primary sinusoid, this this LED driving circuit of controller adjustment produced one first brightness to drive this light-emitting diode lamp module.
6. twin wire dimming light-emitting diode as claimed in claim 3 system; Wherein when the not conducting of the 3rd switch; And when this first switch and this second switch conducting; This phase modulated power supply that this phase-modulation circuit produces is one second sine wave, and this second sinusoidal wave phase place 0 degree and 90 has this not angle of flow between spending.
7. twin wire dimming light-emitting diode as claimed in claim 6 system; Wherein when this phase modulated power supply is this second sine wave; This this LED driving circuit of controller control is so that this light-emitting diode lamp module produces one second brightness, and wherein this second brightness is greater than this first brightness.
8. twin wire dimming light-emitting diode as claimed in claim 3 system; Wherein when this not conducting of first switch; And when this second switch and the 3rd switch conduction; This phase modulated power supply that this phase-modulation circuit produces is one the 3rd sine wave, and the 3rd sinusoidal wave phase place 180 degree and 270 have this not angle of flow between spending.
9. twin wire dimming light-emitting diode as claimed in claim 8 system; Wherein when this phase modulated power supply is the 3rd sine wave; This this LED driving circuit of controller control is so that this light-emitting diode lamp module produces one the 3rd brightness, and wherein the 3rd brightness is less than this first brightness.
10. twin wire dimming light-emitting diode as claimed in claim 3 system; Wherein when this second switch not during conducting; This phase modulated power supply that this phase-modulation circuit produces is one the 4th sine wave; Between the 4th sinusoidal wave phase place 0 degree and 90 is spent, and respectively has this not angle of flow between phase place 180 degree and 270 degree.
11. twin wire dimming light-emitting diode as claimed in claim 10 system, when this phase modulated power supply is the 4th when sinusoidal wave, this this LED driving circuit of controller control is to close this light-emitting diode lamp module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102837224A CN102404905A (en) | 2010-09-14 | 2010-09-14 | Two-wire type light emitting diode light adjusting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102837224A CN102404905A (en) | 2010-09-14 | 2010-09-14 | Two-wire type light emitting diode light adjusting system |
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| CN102404905A true CN102404905A (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102837224A Pending CN102404905A (en) | 2010-09-14 | 2010-09-14 | Two-wire type light emitting diode light adjusting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125681A (en) * | 2013-04-28 | 2014-10-29 | 林万炯 | Regulating and control system of LED lamp |
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|---|---|---|---|---|
| CN101496449A (en) * | 2005-06-06 | 2009-07-29 | 路创电子公司 | Dimmer switch for use with lighting circuits having three-way switches |
| CN101637064A (en) * | 2007-03-12 | 2010-01-27 | 塞瑞斯逻辑公司 | Lighting system with power factor correction control data determined from a phase modulated signal |
| CN201541366U (en) * | 2009-10-13 | 2010-08-04 | 亚源科技股份有限公司 | Light-emitting diode power supply device capable of improving dimming property |
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2010
- 2010-09-14 CN CN2010102837224A patent/CN102404905A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496449A (en) * | 2005-06-06 | 2009-07-29 | 路创电子公司 | Dimmer switch for use with lighting circuits having three-way switches |
| CN101637064A (en) * | 2007-03-12 | 2010-01-27 | 塞瑞斯逻辑公司 | Lighting system with power factor correction control data determined from a phase modulated signal |
| CN201541366U (en) * | 2009-10-13 | 2010-08-04 | 亚源科技股份有限公司 | Light-emitting diode power supply device capable of improving dimming property |
Non-Patent Citations (1)
| Title |
|---|
| DUSTIN RAND ET AL: "Issues, Models and Solutions for Triac Modulated Phase Dimming of LED Lamps", 《IEEE》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125681A (en) * | 2013-04-28 | 2014-10-29 | 林万炯 | Regulating and control system of LED lamp |
| CN104125681B (en) * | 2013-04-28 | 2017-10-17 | 赛尔富电子有限公司 | A kind of LED lamp regulator control system |
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Application publication date: 20120404 |