CN104837234A - Light emitting diode drive unit capable of modulating light and inhibiting scintillation - Google Patents
Light emitting diode drive unit capable of modulating light and inhibiting scintillation Download PDFInfo
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- CN104837234A CN104837234A CN201410046602.0A CN201410046602A CN104837234A CN 104837234 A CN104837234 A CN 104837234A CN 201410046602 A CN201410046602 A CN 201410046602A CN 104837234 A CN104837234 A CN 104837234A
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Abstract
The invention discloses a light emitting diode drive unit capable of modulating light and inhibiting scintillation, comprising a rectification unit, an integration sampling unit and a voltage-current control conversion unit. An AC power supply providing apparatus transmits an AC power supply to a light modulator; the light modulator adjusts light of the AC power supply to obtain a light modulation power supply; the light modulator transmits the light modulation power supply to a rectification unit; the rectification unit rectifies the light modulation power supply to obtain a rectification power supply. The rectification unit transmits the rectification power supply to the integration sampling unit and a light emitting diode; the integration sampling unit performs integration sampling conversion on the rectification power supply to obtain an integration voltage signal, and transmits the integration voltage signal to the voltage-current control conversion unit; the voltage-current control conversion unit converts the integration voltage signal to obtain a driving current signal to drive the light emitting diode. The light emitting diode drive unit can inhibit light emitting diode scintillation.
Description
Technical field
The present invention relates to a kind of light emitting diode drive device, the light emitting diode drive device of particularly a kind of tool light modulation and suppression flicker.
Background technology
Compared to incandescence source, light-emitting diode has many advantages, contains lower energy loss, long life-span, the physical durability of improvement, smaller size and ratio switch speed faster; Therefore, light-emitting diode has been widely deployed to replace fluorescent tube or tungsten lamp.LED drive is in order to drive light-emitting diode.
But when being applied to traditional dimmer, light-emitting diode can glimmer, and LED drive needs electrochemical capacitor to carry out filtering; And the cost intensive of electrochemical capacitor and the life-span short.
Summary of the invention
The object of the present invention is to provide the light emitting diode drive device of a kind of tool light modulation and suppression flicker, make it can suppress the flicker of light-emitting diode.
For reaching above-mentioned purpose of the present invention, the invention provides the light emitting diode drive device of a kind of tool light modulation and suppression flicker, be applied to an AC power generator, a dimmer and at least one light-emitting diode, the light emitting diode drive device of this tool light modulation and suppression flicker comprises: a rectification unit, and this rectification unit is electrically connected to this dimmer and this light-emitting diode; One integration sampling unit, this integration sampling unit is electrically connected to this rectification unit and this light-emitting diode; And one voltage verses current control converting unit, this voltage verses current control converting unit be electrically connected to this integration sampling unit and this light-emitting diode.Wherein this AC power generator transmits an AC power to this dimmer; This dimmer carries out light modulation to obtain a dimming power source to this AC power; This dimmer transmits this dimming power source to this rectification unit; This rectification unit carries out rectification to obtain a rectifier power source to this dimming power source; This rectification unit transmits this rectifier power source to this integration sampling unit and this light-emitting diode; This integration sampling unit carries out integration sampling conversion to obtain an integral voltage signal to this rectifier power source; This integration sampling unit transmits this integral voltage signal and controls converting unit to this voltage verses current; This voltage verses current controls converting unit and changes this integral voltage signal to obtain a driving current signal to drive this light-emitting diode.This driving current signal is constant, therefore can suppress the flicker of this light-emitting diode.
The light emitting diode drive device of tool light modulation as above and suppression flicker, wherein this voltage verses current control converting unit comprises: one first contact; One first operational amplifier, this first operational amplifier is electrically connected to this first contact and this integration sampling unit; And one first resistance, this first resistance is electrically connected to this first operational amplifier and this integration sampling unit.
The light emitting diode drive device of tool light modulation as above and suppression flicker, wherein this voltage verses current control converting unit more comprises: a zener diode, and this zener diode is electrically connected to this first contact; One first electric capacity, this first electric capacity is electrically connected to this first contact; And one second electric capacity, this second electric capacity is electrically connected to this first operational amplifier.
The light emitting diode drive device of tool light modulation as above and suppression flicker, wherein this voltage verses current control converting unit more comprises: one second resistance, and this second resistance is electrically connected to this first operational amplifier and this second electric capacity; One the 3rd electric capacity, the 3rd electric capacity is electrically connected to this second resistance; And one the 3rd resistance, the 3rd resistance is electrically connected to this first operational amplifier and this second electric capacity.
The light emitting diode drive device of tool light modulation as above and suppression flicker, wherein this voltage verses current control converting unit more comprises: a first transistor, and this first transistor is electrically connected to this second resistance, the 3rd electric capacity, the 3rd resistance and this light-emitting diode; And one the 4th resistance, the 4th resistance is electrically connected to the 3rd resistance and this first transistor.
The light emitting diode drive device of tool light modulation as above and suppression flicker, wherein this integration sampling unit comprises: one second contact, and this second contact is electrically connected to this rectification unit and this light-emitting diode; One the 5th resistance, the 5th resistance is electrically connected to this second contact; And one the 6th resistance, the 6th resistance is electrically connected to the 5th resistance and this voltage verses current controls converting unit.
The light emitting diode drive device of tool light modulation as above and suppression flicker, wherein this integration sampling unit more comprises: one the 7th resistance, and the 7th resistance is electrically connected to the 6th resistance and this voltage verses current controls converting unit; One the 4th electric capacity, the 4th electric capacity is electrically connected to the 5th resistance and the 6th resistance; And one the 5th electric capacity, the 5th electric capacity is electrically connected to the 6th resistance, this voltage verses current controls converting unit and the 7th resistance.
The light emitting diode drive device of tool light modulation as above and suppression flicker, more comprise: one the 8th resistance, the 8th resistance is electrically connected to this first contact; One the 9th resistance, the 9th resistance is electrically connected to the 8th resistance; And one second operational amplifier, this second operational amplifier is electrically connected to the 8th resistance, the 9th resistance, the 3rd resistance, the 4th resistance and this first transistor.
The light emitting diode drive device of tool light modulation as above and suppression flicker, more comprise: one the 6th electric capacity, the 6th electric capacity is electrically connected to the 3rd resistance, the 4th resistance, this first transistor and this second operational amplifier; 1 the tenth resistance, the tenth resistance is electrically connected to this second operational amplifier; And 1 the 11 resistance, the 11 resistance is electrically connected to the tenth resistance.
The light emitting diode drive device of tool light modulation as above and suppression flicker, more comprise: a transistor seconds, this transistor seconds is electrically connected to the tenth resistance and the 11 resistance; 1 the 12 resistance, the 12 resistance is electrically connected to this transistor seconds and this second contact; One diode, this diode is electrically connected to this second contact; And 1 the 13 resistance, the 13 resistance is electrically connected to this diode and this first contact.
Effect of the present invention is that, when being applied to traditional dimmer, light-emitting diode can not glimmer, and LED drive does not need electrochemical capacitor to carry out filtering.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the first embodiment calcspar of tool light modulation of the present invention and the light emitting diode drive device suppressing flicker.
Fig. 2 is that voltage verses current of the present invention controls converting unit calcspar.
Fig. 3 is integration sampling unit calcspar of the present invention.
Fig. 4 is the second embodiment calcspar of tool light modulation of the present invention and the light emitting diode drive device suppressing flicker.
Wherein, Reference numeral:
The light emitting diode drive device of 10 tool light modulations and suppression flicker
20 AC power generators
22 AC power
30 dimmers
32 dimming power sources
40 light-emitting diodes
102 rectification units
104 integration sampling units
106 voltage verses current control converting unit
108 rectifier power sources
110 integral voltage signals
112 driving current signal
114 the 8th resistance
116 the 9th resistance
118 second operational amplifiers
120 the 6th electric capacity
122 the tenth resistance
124 the 11 resistance
126 transistor secondses
128 the 12 resistance
130 diodes
132 the 13 resistance
10402 second contacts
10404 the 5th resistance
10406 the 6th resistance
10408 the 7th resistance
10410 the 4th electric capacity
10412 the 5th electric capacity
10602 first contacts
10604 first operational amplifiers
10606 first resistance
10608 zener diodes
10610 first electric capacity
10612 second electric capacity
10614 second resistance
10616 the 3rd electric capacity
10618 the 3rd resistance
10620 the first transistors
10622 the 4th resistance
Embodiment
Please refer to Fig. 1, it is the first embodiment calcspar of tool light modulation of the present invention and the light emitting diode drive device suppressing flicker.The light emitting diode drive device 10 of one tool light modulation and suppression flicker is applied to AC power generator 20, dimmer 30 and an at least one light-emitting diode 40; The light emitting diode drive device 10 of this tool light modulation and suppression flicker comprises rectification unit 102, integration sampling unit 104 and a voltage verses current controls converting unit 106.
This rectification unit 102 is electrically connected to this dimmer 30 and this light-emitting diode 40; This integration sampling unit 104 is electrically connected to this rectification unit 102 and this light-emitting diode 40; This voltage verses current controls converting unit 106 and is electrically connected to this integration sampling unit 104 and this light-emitting diode 40.
This AC power generator 20 transmits an AC power 22 to this dimmer 30; This dimmer 30 carries out light modulation to obtain a dimming power source 32 to this AC power 22; This dimmer 30 transmits this dimming power source 32 to this rectification unit 102; This rectification unit 102 carries out rectification to obtain a rectifier power source 108 to this dimming power source 32; This rectification unit 102 transmits this rectifier power source 108 to this integration sampling unit 104 and this light-emitting diode 40.
This integration sampling unit 104 carries out integration sampling conversion to obtain an integral voltage signal 110 to this rectifier power source 108; This integration sampling unit 104 transmits this integral voltage signal 110 and controls converting unit 106 to this voltage verses current; This voltage verses current controls converting unit 106 and changes this integral voltage signal 110 to obtain a driving current signal 112 to drive this light-emitting diode 40.This driving current signal 112 is constant, therefore can suppress the flicker of this light-emitting diode 40.
Please refer to Fig. 2, it is that voltage verses current of the present invention controls converting unit calcspar.This voltage verses current controls converting unit 106 and comprises one first contact 10602,1 first operational amplifier 10604,1 first resistance 10606, one zener diode 10608,1 first electric capacity 10610,1 second electric capacity 10612,1 second resistance 10614,1 the 3rd electric capacity 10616,1 the 3rd resistance 10618, one the first transistor 10620 and one the 4th resistance 10622.
This first operational amplifier 10604 is electrically connected to this first contact 10602 and this integration sampling unit 104; This first resistance 10606 is electrically connected to this first operational amplifier 10604 and this integration sampling unit 104; This zener diode 10608 is electrically connected to this first contact 10602; This first electric capacity 10610 is electrically connected to this first contact 10602; This second electric capacity 10612 is electrically connected to this first operational amplifier 10604.
This second resistance 10614 is electrically connected to this first operational amplifier 10604 and this second electric capacity 10612; 3rd electric capacity 10616 is electrically connected to this second resistance 10614; 3rd resistance 10618 is electrically connected to this first operational amplifier 10604 and this second electric capacity 10612; This first transistor 10620 is electrically connected to this second resistance 10614, the 3rd electric capacity 10616, the 3rd resistance 10618 and this light-emitting diode 40; 4th resistance 10622 is electrically connected to the 3rd resistance 10618 and this first transistor 10620.
Please refer to Fig. 3, it is integration sampling unit calcspar of the present invention.This integration sampling unit 104 comprises one second contact 10402, the 5th resistance 10404,1 the 6th resistance 10406,1 the 7th resistance 10408,1 the 4th electric capacity 10410 and one the 5th electric capacity 10412.
This second contact 10402 is electrically connected to this rectification unit 102 and this light-emitting diode 40; 5th resistance 10404 is electrically connected to this second contact 10402; 6th resistance 10406 is electrically connected to the 5th resistance 10404 and this voltage verses current controls converting unit 106; 7th resistance 10408 is electrically connected to the 6th resistance 10406 and this voltage verses current controls converting unit 106; 4th electric capacity 10410 is electrically connected to the 5th resistance 10404 and the 6th resistance 10406; 5th electric capacity 10412 is electrically connected to the 6th resistance 10406, this voltage verses current controls converting unit 106 and the 7th resistance 10408.
Please refer to Fig. 4, it is the second embodiment calcspar of tool light modulation of the present invention and the light emitting diode drive device suppressing flicker.Assembly shown in Fig. 4 describes similar to Fig. 1, Fig. 2, Fig. 3, is succinct factor, repeats no more in this.The light emitting diode drive device 10 of this tool light modulation and suppression flicker more comprises one the 8th resistance 114,1 the 9th resistance 116,1 second operational amplifier 118, the 6th electric capacity 120,1 the tenth resistance 122,1 the 11 resistance 124, one transistor seconds 126, the 12 resistance 128, one diode 130 and 1 the 13 resistance 132.
8th resistance 114 is electrically connected to this first contact 10602; 9th resistance 116 is electrically connected to the 8th resistance 114; This second operational amplifier 118 is electrically connected to the 8th resistance 114, the 9th resistance 116, the 3rd resistance 10618, the 4th resistance 10622 and this first transistor 10620; 6th electric capacity 120 is electrically connected to the 3rd resistance 10618, the 4th resistance 10622, this first transistor 10620 and this second operational amplifier 118; Tenth resistance 122 is electrically connected to this second operational amplifier 118; 11 resistance 124 is electrically connected to the tenth resistance 122; This transistor seconds 126 is electrically connected to the tenth resistance the 122 and the 11 resistance 124; 12 resistance 128 is electrically connected to this transistor seconds 126 and this second contact 10402; This diode 130 is electrically connected to this second contact 10402; 13 resistance 132 is electrically connected to this diode 130 and this first contact 10602.
Effect of the present invention is that, when being applied to traditional dimmer, light-emitting diode can not glimmer, and LED drive does not need electrochemical capacitor to carry out filtering.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claims in the present invention.
Claims (10)
1. a light emitting diode drive device for tool light modulation and suppression flicker, is applied to an AC power generator, a dimmer and at least one light-emitting diode, it is characterized in that, the light emitting diode drive device of this tool light modulation and suppression flicker comprises:
One rectification unit, this rectification unit is electrically connected to this dimmer and this light-emitting diode;
One integration sampling unit, this integration sampling unit is electrically connected to this rectification unit and this light-emitting diode; And
One voltage verses current controls converting unit, and this voltage verses current controls converting unit and is electrically connected to this integration sampling unit and this light-emitting diode,
Wherein this AC power generator transmits an AC power to this dimmer; This dimmer carries out light modulation to obtain a dimming power source to this AC power; This dimmer transmits this dimming power source to this rectification unit; This rectification unit carries out rectification to obtain a rectifier power source to this dimming power source; This rectification unit transmits this rectifier power source to this integration sampling unit and this light-emitting diode; This integration sampling unit carries out integration sampling conversion to obtain an integral voltage signal to this rectifier power source; This integration sampling unit transmits this integral voltage signal and controls converting unit to this voltage verses current; This voltage verses current controls converting unit and changes this integral voltage signal to obtain a driving current signal to drive this light-emitting diode.
2. the light emitting diode drive device of tool light modulation according to claim 1 and suppression flicker, is characterized in that, this voltage verses current controls converting unit and comprises:
One first contact;
One first operational amplifier, this first operational amplifier is electrically connected to this first contact and this integration sampling unit; And
One first resistance, this first resistance is electrically connected to this first operational amplifier and this integration sampling unit.
3. the light emitting diode drive device of tool light modulation according to claim 2 and suppression flicker, is characterized in that, this voltage verses current controls converting unit and more comprises:
One zener diode, this zener diode is electrically connected to this first contact;
One first electric capacity, this first electric capacity is electrically connected to this first contact; And
One second electric capacity, this second electric capacity is electrically connected to this first operational amplifier.
4. the light emitting diode drive device of tool light modulation according to claim 3 and suppression flicker, is characterized in that, this voltage verses current controls converting unit and more comprises:
One second resistance, this second resistance is electrically connected to this first operational amplifier and this second electric capacity;
One the 3rd electric capacity, the 3rd electric capacity is electrically connected to this second resistance; And
One the 3rd resistance, the 3rd resistance is electrically connected to this first operational amplifier and this second electric capacity.
5. the light emitting diode drive device of tool light modulation according to claim 4 and suppression flicker, is characterized in that, this voltage verses current controls converting unit and more comprises:
One the first transistor, this first transistor is electrically connected to this second resistance, the 3rd electric capacity, the 3rd resistance and this light-emitting diode; And
One the 4th resistance, the 4th resistance is electrically connected to the 3rd resistance and this first transistor.
6. the light emitting diode drive device of tool light modulation according to claim 5 and suppression flicker, it is characterized in that, this integration sampling unit comprises:
One second contact, this second contact is electrically connected to this rectification unit and this light-emitting diode;
One the 5th resistance, the 5th resistance is electrically connected to this second contact; And
One the 6th resistance, the 6th resistance is electrically connected to the 5th resistance and this voltage verses current controls converting unit.
7. the light emitting diode drive device of tool light modulation according to claim 6 and suppression flicker, it is characterized in that, this integration sampling unit more comprises:
One the 7th resistance, the 7th resistance is electrically connected to the 6th resistance and this voltage verses current controls converting unit;
One the 4th electric capacity, the 4th electric capacity is electrically connected to the 5th resistance and the 6th resistance; And
One the 5th electric capacity, the 5th electric capacity is electrically connected to the 6th resistance, this voltage verses current controls converting unit and the 7th resistance.
8. the light emitting diode drive device of tool light modulation according to claim 7 and suppression flicker, is characterized in that, more comprise:
One the 8th resistance, the 8th resistance is electrically connected to this first contact;
One the 9th resistance, the 9th resistance is electrically connected to the 8th resistance; And
One second operational amplifier, this second operational amplifier is electrically connected to the 8th resistance, the 9th resistance, the 3rd resistance, the 4th resistance and this first transistor.
9. the light emitting diode drive device of tool light modulation according to claim 8 and suppression flicker, is characterized in that, more comprise:
One the 6th electric capacity, the 6th electric capacity is electrically connected to the 3rd resistance, the 4th resistance, this first transistor and this second operational amplifier;
1 the tenth resistance, the tenth resistance is electrically connected to this second operational amplifier; And
1 the 11 resistance, the 11 resistance is electrically connected to the tenth resistance.
10. the light emitting diode drive device of tool light modulation according to claim 9 and suppression flicker, is characterized in that, more comprise:
One transistor seconds, this transistor seconds is electrically connected to the tenth resistance and the 11 resistance;
1 the 12 resistance, the 12 resistance is electrically connected to this transistor seconds and this second contact;
One diode, this diode is electrically connected to this second contact; And
1 the 13 resistance, the 13 resistance is electrically connected to this diode and this first contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046602.0A CN104837234A (en) | 2014-02-11 | 2014-02-11 | Light emitting diode drive unit capable of modulating light and inhibiting scintillation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046602.0A CN104837234A (en) | 2014-02-11 | 2014-02-11 | Light emitting diode drive unit capable of modulating light and inhibiting scintillation |
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| Publication Number | Publication Date |
|---|---|
| CN104837234A true CN104837234A (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410046602.0A Pending CN104837234A (en) | 2014-02-11 | 2014-02-11 | Light emitting diode drive unit capable of modulating light and inhibiting scintillation |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011165394A (en) * | 2010-02-05 | 2011-08-25 | Sharp Corp | Led drive circuit, dimming device, led illumination fixture, led illumination device, and led illumination system |
| CN202759628U (en) * | 2012-05-24 | 2013-02-27 | 天楹（上海）光电科技有限公司 | LED illuminating lamp circuit |
| CN203708596U (en) * | 2014-02-11 | 2014-07-09 | 罗森照明股份有限公司 | Light emitting diode driving device with dimming and flicker suppressing functions |
-
2014
- 2014-02-11 CN CN201410046602.0A patent/CN104837234A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011165394A (en) * | 2010-02-05 | 2011-08-25 | Sharp Corp | Led drive circuit, dimming device, led illumination fixture, led illumination device, and led illumination system |
| CN202759628U (en) * | 2012-05-24 | 2013-02-27 | 天楹（上海）光电科技有限公司 | LED illuminating lamp circuit |
| CN203708596U (en) * | 2014-02-11 | 2014-07-09 | 罗森照明股份有限公司 | Light emitting diode driving device with dimming and flicker suppressing functions |
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