CN105657895B - A kind of method that LED light drives while being adapted to alternating current input and electric ballast input - Google Patents
A kind of method that LED light drives while being adapted to alternating current input and electric ballast input Download PDFInfo
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- CN105657895B CN105657895B CN201610069942.4A CN201610069942A CN105657895B CN 105657895 B CN105657895 B CN 105657895B CN 201610069942 A CN201610069942 A CN 201610069942A CN 105657895 B CN105657895 B CN 105657895B
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- electric ballast
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to LED light actuation techniques field, in particular to a kind of LED light driving while the method for being adapted to alternating current input and electric ballast input.The following steps are included: the turn-off time of step S101, detection power switch tube determine driving condition according to the turn-off time；Step S102, when driving condition is that electric ballast drives, it is adapted to electric ballast input current.It determines driving condition by detecting the turn-off time of power switch tube using the present embodiment technical solution, when being in alternating current input state, does not adjust.When being in electric ballast input state, matching adjusting is carried out to input current, the electric current of LED light the driving input of adaptation alternating current and electric ballast input can be enabled using the technical solution, maintains the consistent of luminous flux.
Description
Technical field
The present invention relates to LED light actuation techniques field, in particular to a kind of LED light drives while being adapted to alternating current input and electricity
The method of sub-ballast input.
Background technique
Light emitting diode (Light-Emitting Diode, LED), is a kind of semiconductor that can convert electrical energy into luminous energy
Electronic component.The principle for gathering enough LED has derived novel product a large amount of, and LED light is exactly one such.It is big with LED light
Amount is universal, and " LED " has been the synonym of LED light in the minds of people.
Luminous flux (luminous flux) refers to the sentient radiant power of human eye institute, it is equal to a certain in the unit time
The radiation energy of wave band and the opposite product depending on seeing rate of the wave band.The unit of luminous flux is " lumen ".Luminous flux usually uses Φ
To indicate.
Existing LED light driving control current input, electric current input mainly include that direct alternating current inputs and pass through electronics
Ballast inputs two kinds.Existing LED light driving is all that alternating current input and electric ballast input are not distinguish or are adapted to,
Identical control logic is only used only to switch with driving power.Cause to have the disadvantage in that
1, since electric ballast input is different from the current impedance characteristic that alternating current inputs, the light for causing LED light to export is logical
Amount differs greatly；
2, there is also differences for the output electric current of different electric ballasts, cause LED light in different electric current inputs, output
Luminous flux differ greatly.
Summary of the invention
Goal of the invention of the embodiment of the present invention, which is to provide a kind of LED light driving while being adapted to alternating current, to be inputted and electric ballast
The method of input can enable the electricity that LED light driving can be adapted to alternating current input and electric ballast inputs using the technical solution
Stream, maintains the consistent of luminous flux.
In order to achieve the above-mentioned object of the invention, complete technical solution of the invention is:
A kind of method that LED light drives while being adapted to alternating current input and electric ballast input, comprising the following steps: detection
The turn-off time of power switch tube determines driving condition according to the turn-off time；
When driving condition is that electric ballast drives, it is adapted to electric ballast input current.
Preferably, the turn-off time for detecting power switch tube determines driving condition according to the turn-off time, specifically,
Power switch tube is detected within 0.5~1 alternating current period, obtains multiple turn-off times；
Compare each turn-off time, obtains variable quantity, judge whether the variable quantity is more than preset threshold values；
If the variable quantity is less than the threshold values, it is determined that driving condition is electric ballast driving；Otherwise it determines and drives
Dynamic state is city's electric drive.
Preferably, it is adapted to electric ballast input current, specifically,
The inductive current threshold values of presupposition multiple threshold values and power conversion circuit；
Power switch tube is opened, judges whether inductive current is more than the inductive current threshold values, the switch-off power if being more than
Switching tube, then service time when recording power switching tube is in opening state；By the service time multiplied by multiple threshold values, knot
Fruit is denoted as the minimum turn-off time；
After power switch tube shutdown, the time needed for determining inductive current from peak-fall to 0, it is denoted as time of afterflow；
Compare minimum turn-off time and time of afterflow, will be denoted as the second turn-off time by numerical value the greater between the two；
At the end of second turn-off time, power switch tube is opened.
Preferably, the representative value of the multiple threshold value is 2.
Therefore driving shape is determined by detecting the turn-off time of power switch tube using the present embodiment technical solution
State is not adjusted when being in alternating current input state.When being in electric ballast input state, to input current progress
With adjusting, the electric current of LED light the driving input of adaptation alternating current and electric ballast input can be enabled using the technical solution, maintains light
Flux it is consistent.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the flow diagram that the embodiment of the present invention 1 provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
As shown in Figure 1, the present embodiment provides a kind of driving of LED light while being adapted to alternating current input and electric ballast input
Method, which comprises the following steps:
Step S101, the turn-off time for detecting power switch tube determines driving condition according to the turn-off time；Unless
The time that turns on and off of additional description, power switch tube can guarantee that converter work is faced in inductive current with the variation of various conditions
Boundary's continuous mode.
Step S102, when driving condition is that electric ballast drives, it is adapted to electric ballast input current.
Specifically, in step s101, wherein the turn-off time of detection power switch tube is sentenced according to the turn-off time
Determine driving condition, specifically,
Power switch tube is detected within 0.5~1 alternating current period, obtains multiple turn-off times；
Compare each turn-off time, obtains variable quantity, judge whether the variable quantity is more than preset threshold values；
If the variable quantity is less than the threshold values, it is determined that driving condition is electric ballast driving；Otherwise it determines and drives
Dynamic state is city's electric drive.
Specifically, in step s 102, wherein adaptation electric ballast input current, specifically,
The inductive current threshold values of presupposition multiple threshold values and power conversion circuit；
Power switch tube is opened, judges whether inductive current is more than the inductive current threshold values, the switch-off power if being more than
Switching tube, then service time when recording power switching tube is in opening state；By the service time multiplied by multiple threshold values, knot
Fruit is denoted as the minimum turn-off time；
After power switch tube shutdown, the time needed for determining inductive current from peak-fall to 0, it is denoted as time of afterflow；
Compare minimum turn-off time and time of afterflow, will be denoted as the second turn-off time by numerical value the greater between the two；
At the end of second turn-off time, power switch tube is opened.
The representative value of multiple threshold value is 2.It should be noted that in order to provide better performance, multiple threshold values can be by controlling
IC external circuit control processed.Common circuit is to control the pin of IC by resistance eutral grounding, and the resistance is to determine this times
Number threshold values.It may be greater than 0 some numerical value.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (2)
1. a kind of LED light driving while the method for being adapted to alternating current input and electric ballast input, which is characterized in that including following
Step:
The turn-off time for detecting power switch tube determines driving condition according to the turn-off time；
When driving condition is that electric ballast drives, it is adapted to electric ballast input current；
The turn-off time for detecting power switch tube determines driving condition according to the turn-off time, specifically,
Power switch tube is detected within 0.5~1 alternating current period, obtains multiple turn-off times；
Compare each turn-off time, obtains variable quantity, judge whether the variable quantity is more than preset threshold values；
If the variable quantity is less than the threshold values, it is determined that driving condition is electric ballast driving；Otherwise driving shape is determined
The city Tai Wei electric drive.
2. a kind of LED light driving according to claim 1 while the method for being adapted to alternating current input and electric ballast input,
It is characterized by:
It is adapted to electric ballast input current, specifically,
The inductive current threshold values of presupposition multiple threshold values and power conversion circuit；
Power switch tube is opened, judges whether inductive current is more than the inductive current threshold values, switch-off power switchs if being more than
Pipe, then service time when recording power switching tube is in opening state；By the service time multiplied by multiple threshold values, as a result remember
For the minimum turn-off time；
After power switch tube shutdown, the time needed for determining inductive current from peak-fall to 0, it is denoted as time of afterflow；
Compare minimum turn-off time and time of afterflow, will be denoted as the second turn-off time by numerical value the greater between the two；
At the end of second turn-off time, power switch tube is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610069942.4A CN105657895B (en) | 2016-01-31 | 2016-01-31 | A kind of method that LED light drives while being adapted to alternating current input and electric ballast input |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610069942.4A CN105657895B (en) | 2016-01-31 | 2016-01-31 | A kind of method that LED light drives while being adapted to alternating current input and electric ballast input |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105657895A CN105657895A (en) | 2016-06-08 |
| CN105657895B true CN105657895B (en) | 2019-06-21 |
Family
ID=56489215
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610069942.4A Expired - Fee Related CN105657895B (en) | 2016-01-31 | 2016-01-31 | A kind of method that LED light drives while being adapted to alternating current input and electric ballast input |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1411750A2 (en) * | 2002-10-16 | 2004-04-21 | CCS Inc. | Power supply system for light emitting diode unit |
| CN201690664U (en) * | 2010-05-14 | 2010-12-29 | 苏州市昆士莱照明科技有限公司 | Emergency electronic ballast |
| CN104507208A (en) * | 2014-11-26 | 2015-04-08 | 武汉弘晶微电子有限公司 | Current automatic adjusting output method compatible with conventional fluorescent tube and LED tube, and electronic ballast |
| CN104540265A (en) * | 2014-11-21 | 2015-04-22 | 南京大学 | Low-cost omnidirectional fully-compatible driving device |
| CN204498418U (en) * | 2015-02-17 | 2015-07-22 | 张秀红 | The LED of a kind of compatible with alternating power supply and electric ballast |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2554080C2 (en) * | 2009-09-18 | 2015-06-27 | Конинклейке Филипс Электроникс Н.В. | Illumination device |
| EP2364060A1 (en) * | 2010-03-01 | 2011-09-07 | Hella KGaA Hueck & Co. | Light device for identifying and marking traffic areas in airports |
-
2016
- 2016-01-31 CN CN201610069942.4A patent/CN105657895B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1411750A2 (en) * | 2002-10-16 | 2004-04-21 | CCS Inc. | Power supply system for light emitting diode unit |
| CN201690664U (en) * | 2010-05-14 | 2010-12-29 | 苏州市昆士莱照明科技有限公司 | Emergency electronic ballast |
| CN104540265A (en) * | 2014-11-21 | 2015-04-22 | 南京大学 | Low-cost omnidirectional fully-compatible driving device |
| CN104507208A (en) * | 2014-11-26 | 2015-04-08 | 武汉弘晶微电子有限公司 | Current automatic adjusting output method compatible with conventional fluorescent tube and LED tube, and electronic ballast |
| CN204498418U (en) * | 2015-02-17 | 2015-07-22 | 张秀红 | The LED of a kind of compatible with alternating power supply and electric ballast |
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| Publication number | Publication date |
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| CN105657895A (en) | 2016-06-08 |
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Granted publication date: 20190621 Termination date: 20200131 |