CN105072735A - Drive circuit for raising LED visual lighting effect - Google Patents
Drive circuit for raising LED visual lighting effect Download PDFInfo
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- CN105072735A CN105072735A CN201510315066.4A CN201510315066A CN105072735A CN 105072735 A CN105072735 A CN 105072735A CN 201510315066 A CN201510315066 A CN 201510315066A CN 105072735 A CN105072735 A CN 105072735A
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Abstract
A drive circuit for raising LED visual lighting effects comprises is provided. Concentrated constant current drive of LEDs adopts a phase splitting method, and multiple circuits are formed to drive multiple paths of LEDs in different phases. Meanwhile, drive at different phases is constant-current and can independently control drive current. The LEDs emit light at spaced angles, a luminous flux and a lighting effect of an LED lamp can be measured by instruments through luminous flux phase stacking, LED temperature is reduced, and the LED service life is prolonged.
Description
Technical field
The present invention relates to LED semiconducting solid lighting technical field, be specifically related to a kind of drive circuit improving LED visual illumination effect.
Background technology
LED street lamp abroad, particularly American-European, technology is relatively ripe, but the driving design of high-power LED illumination and energy-conservation exploration were never stopped, wherein most achievement in research is all embodied in the related invention of LED front-end technology, specific LED lamp is carried out to the aspects such as driving power design.Several modes such as its type of drive can divide into resistance constant current, resistance-capacitance depressurization drives, linear current stabilization, linear voltage stabilization and switch voltage-stabilizing.Wherein it is worth mentioning that 2008, a kind of brand-new LED type of drive that the people such as the wild refined literary composition of god of Ai Ai university of Japan report, namely duty ratio is adopted to reach 5%, frequency is the power drives that the pulse voltage of 60Hz carries out LED, make use of the photobehavior of human eye dexterously, obtain the effect that " visual brightness " of a kind of people is double.Within 2010, contemporary optics instrument National Key Laboratory of associating Zhejiang University of Zhejiang Energy and Nuclear Technology Application Research Institute is studied discussion to this technology.Show by experiment, " visual brightness " is 1.5 ~ 1.9 times that constant current drives.But, because pulsed drive is intermittence work, the light efficiency of apparatus measures can be caused to reduce, easily cause the scarce limit such as device heating, junction temperature rising.For the above-mentioned defect existed in currently available technology research and development, through research, provide a kind of scheme, solve the defect existed in prior art research and development.
Summary of the invention
The present invention is directed above-mentioned prior art Problems existing, propose a kind of LED phase-splitting constant-current control circuit, include and the concentrated constant current of LED is driven employing phase-splitting mode, formation multichannel, out of phase is carried out LED multi-path and drives.Meanwhile, the driving of out of phase is again constant current and can independently controls its drive current.Because LED is in luminescence on certain angle of being separated by, by luminous flux Phase Stacking, goes out luminous flux and the light efficiency of LED lamp by apparatus measures, reduce LED temperature simultaneously, extend LED useful life.
Object of the present invention realizes by following technical proposal:
A kind of drive circuit improving LED visual illumination effect, it is characterized in that, the core circuit of described drive circuit is LED phase-splitting constant-current control circuit, described LED phase-splitting constant-current control circuit is worked by linear constant voltage reference power drives, comprise signal input module, signal processing module and signal output module, described signal input module carrys out input analog voltage by the Ti chip integrated circuit installed, described signal processing module comprises light modulation adapter circuit, multiple constant current circuit, total VF identifies the random adjustment member of pulsewidth, phase assignments and overlapping portion, wherein, a described multiple constant current circuit part is signal processing module, a part is signal output module.
Further, described multiple constant current circuit is by three triodes Q1, Q2, Q3, three resistance R1, R2, R3, electric capacity C1, an operational amplifier IC1 and field effect transistor Q4 form, wherein Q1 is common collector, and Q2, Q3 are common emitters, and resistance R1, R2, R3 and electric capacity C1 are for being connected in parallel, operational amplifier IC1 is negative feedback, and field effect transistor Q4 is common source N channel depletion type metal-oxide-semiconductor;
Further, the analog voltage of described signal input module input inputs in light modulation adapter circuit with pulsewidth jointly;
Further, described total VF identifies that the random adjustment member of pulsewidth connects LED stable oscillating circuit while being connected with overlapping portion with phase assignments, and the frequency response of described stable oscillating circuit is between 300Hz to 500Hz;
Further, described LED phase-splitting constant-current control circuit entirety wants ground connection;
Further, described linear constant voltage reference power supply one side connects input voltage vin and is delivered in multiple constant current circuit, an input voltage Vcc.
Illustrate that the invention will be further described with embodiment below by accompanying drawing simultaneously.
Accompanying drawing explanation
Fig. 1: LED heterogeneous constant-current control circuit figure;
Fig. 2: multichannel independence constant-current circuit figure;
In Fig. 1, Ti is chip integrated circuit, PWM in Fig. 2 is pulse duration modified tone circuit, and Q1, Q2, Q3 are triode, and Q4 is field effect transistor, R1, R2, R3 are resistance, IC1 is amplifier, and C1 is electric capacity, and in figure, Vin is input voltage, Vcc is output voltage, GND is ground connection, and Rf is resistance, and DL is that light phase exports.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Meanwhile, these describe just exemplary, and are not limiting the scope of the invention.
What the present invention designed is a kind of drive circuit improving LED visual illumination effect, and the designing points of its core is the circuit design that LED drive circuit designs and the distribution of phase place superposes with the light phase of output of the multichannel independence constant current in LED phase-splitting constant-current control circuit.So-called independent constant current Shi Duige road constant-current circuit adopts individual parameter to adjust respectively, by adjusting the resistance of R1, R2, R3, independently can adjust the electric current of constant-current circuit, Shi Ge does not interfere with each other between road, the LED that can be suitable for different electric current and different VF value uses in same LED lamp, form the mixed light of LED, improve color rendering index, the electrodeless of colour temperature can be carried out simultaneously and match well.
The design of phase assignments, light phase supercircuit carries out phase-splitting process to multipath LED constant current electric current, and centralized control LED constant current drives.Adopt phase-splitting mode, formation multichannel, out of phase is carried out each paths of LEDs and drives.Meanwhile, the driving of out of phase is again constant current and can independently controls its drive current.Because LED is in luminescence on certain angle of being separated by, superposing control circuit carries out luminous flux Phase Stacking, can improve luminous flux and the light efficiency of LED lamp.Phase assignments can reduce LED temperature, reduces optical attenuation, extend LED useful life.Wherein, in total VF identifies the process that pulsewidth adjusts at random, its frequency response of LED stable oscillating circuit is arranged on 300Hz ~ 500Hz, and this part effectively can solve the stroboscopic problem of LED lamp.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (6)
1. one kind is improved the drive circuit of LED visual illumination effect, it is characterized in that, the core circuit of described drive circuit is LED phase-splitting constant-current control circuit, described LED phase-splitting constant-current control circuit is worked by linear constant voltage reference power drives, comprise signal input module, signal processing module and signal output module, described signal input module carrys out input analog voltage by the Ti chip integrated circuit installed, described signal processing module comprises light modulation adapter circuit, multiple constant current circuit, total VF identifies the random adjustment member of pulsewidth, phase assignments and overlapping portion, wherein, a described multiple constant current circuit part is signal processing module, a part is signal output module.
2. a kind of drive circuit improving LED visual illumination effect according to claim 1, it is characterized in that, described multiple constant current circuit is by three triodes Q1, Q2, Q3, three resistance R1, R2, R3, electric capacity C1, an operational amplifier IC1 and field effect transistor Q4 form, and wherein Q1 is common collector, Q2, Q3 are common emitters, resistance R1, R2, R3 and electric capacity C1 are for being connected in parallel, and operational amplifier IC1 is negative feedback, and field effect transistor Q4 is common source N channel depletion type metal-oxide-semiconductor.
3. a kind of drive circuit improving LED visual illumination effect according to claim 1, is characterized in that, the analog voltage of described signal input module input inputs in light modulation adapter circuit jointly with pulsewidth.
4. a kind of drive circuit improving LED visual illumination effect according to claim 1, it is characterized in that, described total VF identifies that the random adjustment member of pulsewidth connects LED stable oscillating circuit while being connected with overlapping portion with phase assignments, and the frequency response of described stable oscillating circuit is between 300Hz to 500Hz.
5. a kind of drive circuit improving LED visual illumination effect according to claim 1, is characterized in that, described LED phase-splitting constant-current control circuit entirety wants ground connection.
6. a kind of drive circuit improving LED visual illumination effect according to claim 1, is characterized in that, described linear constant voltage reference power supply one side connects input voltage vin and is also delivered in multiple constant current circuit, an input voltage Vcc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315066.4A CN105072735A (en) | 2015-06-10 | 2015-06-10 | Drive circuit for raising LED visual lighting effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510315066.4A CN105072735A (en) | 2015-06-10 | 2015-06-10 | Drive circuit for raising LED visual lighting effect |
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| CN105072735A true CN105072735A (en) | 2015-11-18 |
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| CN201510315066.4A Pending CN105072735A (en) | 2015-06-10 | 2015-06-10 | Drive circuit for raising LED visual lighting effect |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351780A (en) * | 2015-11-20 | 2016-02-24 | 宁波多力浦工贸有限公司 | Intelligent bulb lamp |
| CN105351778A (en) * | 2015-11-20 | 2016-02-24 | 宁波多力浦工贸有限公司 | Improved bulb lamp |
| CN105402617A (en) * | 2015-11-20 | 2016-03-16 | 宁波多力浦工贸有限公司 | Improved bulb light |
| CN105465634A (en) * | 2015-11-20 | 2016-04-06 | 宁波多力浦工贸有限公司 | Bulb lamp |
| CN107795862A (en) * | 2016-08-31 | 2018-03-13 | 江苏唐城霓虹数码科技有限公司 | LED based on multichannel independence constant current driving |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105351780A (en) * | 2015-11-20 | 2016-02-24 | 宁波多力浦工贸有限公司 | Intelligent bulb lamp |
| CN105351778A (en) * | 2015-11-20 | 2016-02-24 | 宁波多力浦工贸有限公司 | Improved bulb lamp |
| CN105402617A (en) * | 2015-11-20 | 2016-03-16 | 宁波多力浦工贸有限公司 | Improved bulb light |
| CN105465634A (en) * | 2015-11-20 | 2016-04-06 | 宁波多力浦工贸有限公司 | Bulb lamp |
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| C06 | Publication | ||
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Sen Inventor after: Pan Chen Inventor before: Wang Zhixing Inventor before: Wang Sen Inventor before: Wang Ziqiang |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171020 Address after: No. 118 Street Xijiu road in Yixing city of Jiangsu Province, Wuxi City, 214204 Applicant after: Jiangsu rich Photoelectric Technology Co., Ltd. Address before: 214200 Jiangsu city of Wuxi province Yixing Zhangzhu Town Industrial Zone Yulong Road Applicant before: Jing Zheng lighting Co., Ltd |
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| SE01 | Entry into force of request for substantive examination | ||
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