CN110267404A - A kind of the high-precision control module and method of light source - Google Patents
A kind of the high-precision control module and method of light source Download PDFInfo
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- CN110267404A CN110267404A CN201910746550.0A CN201910746550A CN110267404A CN 110267404 A CN110267404 A CN 110267404A CN 201910746550 A CN201910746550 A CN 201910746550A CN 110267404 A CN110267404 A CN 110267404A
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- light source
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- luminous flux
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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]
- H05B45/10—Controlling the intensity of the light
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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]
- H05B45/20—Controlling the colour of the light
Abstract
The invention discloses the high-precision control modules and method of a kind of light source, including light source, driving circuit, spectrometer and processing unit；Processing unit executes method: S01: reading the parameter of light source and parameter preset and the spectrometer detection of LED, the parameter that will test and parameter preset compare, and obtain chromaticity coordinates, the offset vector of chromaticity coordinates, luminous flux and luminous flux and change ratio；S02: it if luminous flux changes when and returns to previous step if the chromaticity coordinates of light source is in setting error range, otherwise carries out in next step；S03: if the chromaticity coordinates of light source is more than error range, then calculate the chromaticity coordinates of default light source and the resolute of each LED chromaticity coordinates, and the data of step S01 is combined to adjust each LED light flux one by one, until the chromaticity coordinates of light source is adjusted in error range, as luminous flux is changed than being more than error range, then with the luminous flux of the current each LED of setting ratio synchronous adjustment, it is adjusted in error range until luminous flux changes ratio；S04: return step S01.
Description
Technical field
The present invention relates to technical field of lighting devices, in particular to the high-precision control module and method of a kind of light source.
Background technique
Composite light source needs a variety of different monochromatic light to be composed, and is very important to each monochromatic control
Part, but at present intensity is rested on to the adjusting of complex light mostly or cried in light intensity, to complex light during light source working
Color coordinate drift can not accurately adjust amendment.
As the utility model of publication number CN205079080U is related to a kind of three light source flashlights, the shell packet of the flashlight
Lamp housing, lamp tail, lamp cap are included, the LED light of lamp plate protrudes into the lamp hole of Lamp cup, and lamp tail is equipped with button, and shell is switched equipped with electrodeless adjustment；
Its main points is that the lamp plate is equipped with centered on central axis, is in 3 points of equally distributed LED light, LED light be respectively equipped with it is yellow, purple,
White three kinds of light sources.Each light source is carried out from secretly to bright, and the step-less adjustment from bright to dark, convenient for different light sources
Strength demand, light source requirements when meeting such as gemstone testing.
The light regulating technology of the prior art rests on adjusting brightness, and can not essence to complex light color coordinate drift that may be present
Really adjustment is repaired.
Summary of the invention
It cannot achieve the accurate adjusting of light intensity and color for the prior art, the present invention provides a kind of high-precisions of light source
Control module and method realize the accurate adjusting to composite light source light intensity and color.
It is technical solution of the present invention below.
A kind of high-accuracy control method of light source, comprising the following steps:
S01: the parameter of light source and parameter preset and the spectrometer detection of LED, the parameter that will test and parameter preset pair are read
Than obtaining chromaticity coordinates, the offset vector of chromaticity coordinates, luminous flux and luminous flux and changing ratio；
S02: it if the chromaticity coordinates that luminous flux changes when light source returns to previous step if setting in error range, otherwise carries out down
One step；
S03: if the chromaticity coordinates of light source is more than error range, then the chromaticity coordinates of default light source and point arrow of each LED chromaticity coordinates are calculated
Amount, and the data of step S01 is combined to adjust each LED light flux one by one, until the chromaticity coordinates of light source is adjusted in error range, such as
Luminous flux is changed than being more than error range, then with the luminous flux of the current each LED of setting ratio synchronous adjustment, until luminous flux changes
Than being adjusted in error range；
S04: return step S01.
Preferably, stating in step S01, color coordinate drift vector is, the total light flux variation of light source is than Q=(L-)/
The luminous flux of L, each LED change than q=(-)/, wherein P is the parameter preset chromaticity coordinates of light source,For the light of current detection
Source chromaticity coordinates, L are the default luminous flux of light source,For the luminous flux of light source of current detection,For the default luminous flux of each LED,
For current LED light flux,It is obtained by detection or according to the optical parameter of current light source and each LED light flux proportion meter
It obtains.
Preferably, the adjustment process of the chromaticity coordinates of light source includes: in step S03
A01: calculating several resolutes, and resolute is expressed asOr, wherein A be resolute correspond to LED chromaticity coordinates and
According to corresponding LED replacement；
A02: the absolute value of several resolutes is sorted from small to large, and sets initial seniority among brothers and sisters value n=1；
A03: the luminous flux of corresponding LED is changed ratio by n-th of resolute and corresponding LED light flux in selected and sortedDeng
It is divided intoPart ration of division, executes A04；
A04: such asThe luminous flux for then turning down primary corresponding LED by the ration of division less than 90 ° with the angle of corresponding resolute, is such as pressed from both sides
Angle is greater than 90 ° of luminous fluxes that primary corresponding LED is then turned up by the ration of division, does not adjust if angle is equal to 90 °, after every adjustment is primary
Judge whether the chromaticity coordinates of light source is adjusted in error range, then terminate to adjust in this way, such as otherwise executes A05；
A05: judge to adjust whether number reachesIt is secondary, A04 is otherwise such as returned, adds n numerically and returns together
A03；
A06: when n is greater than LED quantity, terminates to adjust and prompt to malfunction.
Wherein useOrDifference be, selectThen calculation amount is small, reacts in most cases faster；
It selectsThen more accurate but computationally intensive in most cases and reaction is slow, in addition may exist on rare occasion anti-
Difference, but from actual production or the angle used, it is general to select。
Preferably, during the adjustment of the chromaticity coordinates of the light source:For setting value, and meet,
Middle k is more than or equal to 2 and is less than or equal to n.
It further include a kind of high-precision control module of light source, including light source and driving circuit, further includes: spectrometer, detection
Optical parameter, optical parameter include luminous flux and chromaticity coordinates；Processing unit controls the output of driving circuit；The light source includes
The LED of several different colours；The processing unit executes following steps:
S01: the parameter of light source and parameter preset and the spectrometer detection of LED, the parameter that will test and parameter preset pair are read
Than obtaining chromaticity coordinates, the offset vector of chromaticity coordinates, luminous flux and luminous flux and changing ratio；
S02: it if the chromaticity coordinates that luminous flux changes when light source returns to previous step if setting in error range, otherwise carries out down
One step；
S03: if the chromaticity coordinates of light source is more than error range, then the chromaticity coordinates of default light source and point arrow of each LED chromaticity coordinates are calculated
Amount, and the data of step S01 is combined to adjust each LED light flux one by one, until the chromaticity coordinates of light source is adjusted in error range, such as
Luminous flux is changed than being more than error range, then with the luminous flux of the current each LED of setting ratio synchronous adjustment, until luminous flux changes
Than being adjusted in error range；
S04: return step S01.
The adjustment of chromaticity coordinates changes the adjustment of ratio for correcting light for correcting the color of light source, luminous flux in this programme
By force, in such a way that the substep of LED one by one adjusts, the precision of chromaticity coordinates adjustment is improved.
Preferably, the LED of several different colours includes white light LEDs and several monochromatic light LED.In monochromatic light LED
On the basis of increase white light LEDs, further increase the accuracy of adjustment.
Preferably, the luminous flux that the white light LEDs participate in light source changes the adjustment of ratio, monochromatic light LED participates in light source
Luminous flux changes the adjustment of when chromaticity coordinates.When only adjusting the chromaticity coordinates of light source, white light LEDs without modification, are guaranteeing accurately
It improves and regulates the speed in the case where degree.
Preferably, in the step S01, color coordinate drift vector is, the total light flux variation of light source is than Q=(L-The luminous flux of)/L, each LED change than q=(-)/, wherein P is the parameter preset chromaticity coordinates of light source,For current detection
Light source chromaticity coordinates, L are the default luminous flux of light source,For the luminous flux of light source of current detection,For the default luminous flux of each LED,For current LED light flux,It is obtained by detection or is matched according to the optical parameter of current light source and each LED light flux
It is calculated.
Preferably, the adjustment process of the chromaticity coordinates of light source includes: in step S03
A01: calculating several resolutes, and resolute is expressed asOr, wherein A be resolute correspond to LED chromaticity coordinates and
According to corresponding LED replacement；
A02: the absolute value of several resolutes is sorted from small to large, and sets initial seniority among brothers and sisters value n=1；
A03: the luminous flux of corresponding LED is changed ratio by n-th of resolute and corresponding LED light flux in selected and sortedDeng
It is divided intoPart ration of division, executes A04；
A04: such asThe luminous flux for then turning down primary corresponding LED by the ration of division less than 90 ° with the angle of corresponding resolute, is such as pressed from both sides
Angle is greater than 90 ° of luminous fluxes that primary corresponding LED is then turned up by the ration of division, does not adjust if angle is equal to 90 °, after every adjustment is primary
Judge whether the chromaticity coordinates of light source is adjusted in error range, then terminate to adjust in this way, such as otherwise executes A05；
A05: judge to adjust whether number reachesIt is secondary, A04 is otherwise such as returned, adds n numerically and returns together
A03；
A06: when n is greater than LED quantity, terminates to adjust and prompt to malfunction.
By sequence, the LED nearest apart from light source chromaticity coordinates is first adjusted in color domain figure, because the LED is to current
The chromaticity coordinates of light source influences maximum, and accuracy is further increased, in the LED tune using sectional-regulated in the degree adjusted
After whole, then the adjustment of secondary close LED is carried out, and so on, until adjustment finishes.This adjustment mode has taken into account adjustment
Speed and accuracy.
Preferably, during the adjustment of the chromaticity coordinates of the light source:For setting value, and meet,
Middle k is more than or equal to 2 and is less than or equal to n.WhereinAccording to required adjustment time and precision setting,Value it is bigger, when adjustment
Between it is longer and adjustment it is more accurate, generally take units.
Substantial effect of the invention includes: that light source Adjustment precision is high, regulates the speed fast, can be realized as needed in essence
Make corresponding balance on degree and time, excellent basis is provided to the adjusting and amendment of composite light source.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the driving circuit of the embodiment of the present invention；
Fig. 3 is the gamut map of the embodiment of the present invention；
In figure: 1- light source, 2- driving circuit, 3- spectrometer, 4- processing unit.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application is described.
Wherein, in the description of the embodiment of the present application, unless otherwise indicated, "/" indicate or the meaning, for example, A/B can be with
Indicate A or B；"and/or" herein is only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, at this
In the description for applying for embodiment, " multiple " refer to two or more.
It is mentioned in background technique, the existing composite light source gone out by a variety of different LED combinations when in use cannot be effective
The chromaticity coordinates and/or luminous flux for correcting complex light cause preset complex light to there is centainly inclined with the complex light actually generated
Difference, to a certain degree influence luminous mass.The present embodiment is exactly in order to solve the above problem.
It is as shown in Figure 1 a kind of high-precision control module of light source, including light source 1, driving circuit 2, spectrometer 3 and processing
Unit 4.Wherein, light source 1 includes a white light LEDs and five different monochromatic light LED；Driving circuit 2 drives above-mentioned
LED；Spectrometer 1 is used to detect the optical parameter of each LED and complex light, and the optical parameter herein referred to includes that luminous flux and color are sat
Mark.
It is illustrated in figure 2 the circuit diagram of the driving circuit 2 of the present embodiment, wherein the cathode of diode D5, which connects, corresponds to
Load LED.
Processing unit 4 executes following steps:
S01: the parameter of light source and parameter preset and the spectrometer detection of LED, the parameter that will test and parameter preset pair are read
Than obtaining chromaticity coordinates, the offset vector of chromaticity coordinates, luminous flux and luminous flux and changing ratio.As shown in figure 3, P is light source in figure
Parameter preset chromaticity coordinates,For the light source chromaticity coordinates of current detection, W point is white light LEDs chromaticity coordinates, other points are corresponding monochrome
Light LED chromaticity coordinates, if color coordinate drift vector is, the total light flux variation of light source is than Q=(L-The light of)/L, each LED are logical
Amount change than q=(-)/, wherein L is the default luminous flux of light source,For the luminous flux of light source of current detection,For each LED's
Default luminous flux,For current LED light flux,It is obtained or by detecting according to the optical parameter and each LED of current light source
Luminous flux proportion is calculated.Calculation is the chromaticity coordinates for detecting current light sourceAnd luminous flux, according toIt can be with
Obtain the luminous flux proportion of several LED, e.g. 1:2:3:4:5:6, then according to the luminous flux of light source of current detectionWith it is upper
Proportion is stated to be calculated as current LED light flux。
S02: if luminous flux change when light source chromaticity coordinates setting error range in if return to previous step, otherwise into
Row is in next step.
S03: if the chromaticity coordinates of light source is more than error range, then the chromaticity coordinates and each LED chromaticity coordinates of default light source are calculated
Resolute, and the data of step S01 is combined to adjust each LED light flux one by one, until the chromaticity coordinates of light source is adjusted to error range
It is interior, if luminous flux is changed than being more than error range, then with the luminous flux of the current each LED of setting ratio synchronous adjustment, until light is logical
Amount changes ratio and is adjusted in error range；
Wherein the adjustment process of the chromaticity coordinates of light source includes: in step S03
A01: calculating several resolutes, and resolute is expressed as, wherein A is that resolute corresponds to the chromaticity coordinates of LED and according to right
Answer LED replacement.
A02: the absolute value of several resolutes is sorted from small to large, and sets initial seniority among brothers and sisters value n=1.
A03: the luminous flux of corresponding LED is changed ratio by n-th of resolute and corresponding LED light flux in selected and sortedIt is divided intoPart ration of division, executes A04；WhereinFor setting value, and meet, wherein k be more than or equal to 2 and
Less than or equal to n.According to required adjustment time and precision setting,Value it is bigger, adjustment time it is longer and adjustment it is more smart
Really, the present embodiment takes the integer more than or equal to 2 and less than or equal to 5.
A04: such asThen turn down the luminous flux of primary corresponding LED by the ration of division less than 90 ° with the angle of corresponding resolute,
The luminous flux of primary corresponding LED is turned up by the ration of division if angle is greater than 90 °, is not adjusted if angle is equal to 90 °, every adjustment one
Judge whether the chromaticity coordinates of light source is adjusted in error range after secondary, then terminate to adjust in this way, such as otherwise executes A05.
A05: judge to adjust whether number reachesIt is secondary, A04 is otherwise such as returned, adds n numerically and returns together
Return A03.
A06: when n is greater than monochromatic light LED quantity, terminates to adjust and prompt to malfunction；Because the present embodiment white light LEDs are only joined
The adjustment of ratio is changed with the luminous flux of light source, the luminous flux that monochromatic light LED participates in light source changes the adjustment of when chromaticity coordinates.Work as
When only adjusting the chromaticity coordinates of light source, white light LEDs are not adjusted, and are improved and are regulated the speed in the case where guaranteeing accuracy.
S04: return step S01.By sequence, the LED nearest apart from light source chromaticity coordinates is first adjusted in color domain figure,
Because the LED influences the chromaticity coordinates of current light source maximum, and further increases essence using sectional-regulated in the degree adjusted
Exactness after LED adjustment, then carries out the adjustment of secondary close LED, and so on, until adjustment finishes.This adjustment side
Formula has taken into account the speed and accuracy of adjustment.
The adjustment of chromaticity coordinates changes the adjustment of ratio for correcting light for correcting the color of light source, luminous flux in this programme
By force, in such a way that the substep of LED one by one adjusts, the precision of chromaticity coordinates adjustment is improved.
The present embodiment further includes a kind of high-accuracy control method of light source.Steps are as follows:
S01: the parameter of light source and parameter preset and the spectrometer detection of LED, the parameter that will test and parameter preset pair are read
Than obtaining chromaticity coordinates, the offset vector of chromaticity coordinates, luminous flux and luminous flux and changing ratio, wherein color coordinate drift vector is,
The total light flux of light source is changed than Q=(L-The luminous flux of)/L, each LED change than q=(-)/, wherein P is the default of light source
Parameter chromaticity coordinates,For the light source chromaticity coordinates of current detection, L is the default luminous flux of light source,For the light source light of current detection
Flux,For the default luminous flux of each LED,For current LED light flux,It is obtained or by detecting according to the light of current light source
It learns parameter and each LED light flux proportion is calculated.Calculation does not make tired state.
S02: if luminous flux change when light source chromaticity coordinates setting error range in if return to previous step, otherwise into
Row is in next step.
S03: if the chromaticity coordinates of light source is more than error range, then the chromaticity coordinates and each LED chromaticity coordinates of default light source are calculated
Resolute, and the data of step S01 is combined to adjust each LED light flux one by one, until the chromaticity coordinates of light source is adjusted to error range
It is interior, if luminous flux is changed than being more than error range, then with the luminous flux of the current each LED of setting ratio synchronous adjustment, until light is logical
Amount changes ratio and is adjusted in error range；
Wherein the adjustment process of the chromaticity coordinates of light source includes: in step S03
A01: calculating several resolutes, and resolute is expressed as, wherein A is that resolute corresponds to the chromaticity coordinates of LED and according to right
Answer LED replacement.
A02: the absolute value of several resolutes is sorted from small to large, and sets initial seniority among brothers and sisters value n=1.
A03: the luminous flux of corresponding LED is changed ratio by n-th of resolute and corresponding LED light flux in selected and sortedIt is divided intoPart ration of division, executes A04；For setting value, and meet, wherein k is more than or equal to 2 and is less than
Equal to n.WhereinAccording to required adjustment time and precision setting,Value it is bigger, adjustment time it is longer and adjustment it is more smart
Really, 5 integer is taken more than or equal to 2 and is less than or equal to here.
A04: such asThen turn down the luminous flux of primary corresponding LED by the ration of division less than 90 ° with the angle of corresponding resolute,
The luminous flux of primary corresponding LED is turned up by the ration of division if angle is greater than 90 °, is not adjusted if angle is equal to 90 °, every adjustment one
Judge whether the chromaticity coordinates of light source is adjusted in error range after secondary, then terminate to adjust in this way, such as otherwise executes A05.
A05: judge to adjust whether number reachesIt is secondary, A04 is otherwise such as returned, adds n numerically and returns together
Return A03.
A06: when n is greater than LED quantity, terminates to adjust and prompt to malfunction.
S04: return step S01.The beneficial effect of the present embodiment is not repeated.
By the description of embodiment of above, those skilled in the art is it can be appreciated that be the convenience and letter of description
It is clean, it only the example of the division of the above functional modules, in practical application can according to need and divide above-mentioned function
With being completed by different functional modules, i.e., the internal structure of specific device is divided into different functional modules, more than completing
The all or part of function of description.
In embodiment provided herein, it should be understood that disclosed structures and methods can pass through others
Mode is realized.For example, the embodiment described above about structure is only schematical, for example, stroke of module or unit
Point, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can
To combine or be desirably integrated into another structure, or some features can be ignored or not executed.Another point, it is shown or beg for
The mutual coupling, direct-coupling or communication connection of opinion can be through some interfaces, the INDIRECT COUPLING of structure or unit
Or communication connection, it can be electrical property, mechanical or other forms.
Unit may or may not be physically separated as illustrated by the separation member, shown as a unit
Component can be a physical unit or multiple physical units, it can and it is in one place, or may be distributed over multiple
Different places.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in the embodiment of the present application can integrate in one processing unit, it is also possible to each
A unit physically exists alone, and can also be integrated in one unit with two or more units.Above-mentioned integrated unit was both
It can take the form of hardware realization, can also realize in the form of software functional units.
It, can if integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product
To be stored in a read/write memory medium.Based on this understanding, the technical solution of the embodiment of the present application substantially or
Say that all or part of the part that contributes to existing technology or the technical solution can embody in the form of software products
Out, which is stored in a storage medium, including some instructions are used so that an equipment (can be monolithic
Machine, chip etc.) or processor (processor) execute each embodiment method of the application all or part of the steps.And it is aforementioned
Storage medium include: USB flash disk, mobile hard disk, read-only memory (read only memory, ROM), random access memory
The various media that can store program code such as (random access memory, RAM), magnetic or disk.
The above content, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can easily think of the change or the replacement, and should all contain
Lid is within the scope of protection of this application.Therefore, the protection scope of the application should be subject to the protection scope in claims.
Claims (6)
1. a kind of high-accuracy control method of light source, which comprises the following steps:
S01: the parameter of light source and parameter preset and the spectrometer detection of LED, the parameter that will test and parameter preset pair are read
Than obtaining chromaticity coordinates, the offset vector of chromaticity coordinates, luminous flux and luminous flux and changing ratio；
S02: it if the chromaticity coordinates that luminous flux changes when light source returns to previous step if setting in error range, otherwise carries out down
One step；
S03: if the chromaticity coordinates of light source is more than error range, then the chromaticity coordinates of default light source and point arrow of each LED chromaticity coordinates are calculated
Amount, and the data of step S01 is combined to adjust each LED light flux one by one, until the chromaticity coordinates of light source is adjusted in error range, such as
Luminous flux is changed than being more than error range, then with the luminous flux of the current each LED of setting ratio synchronous adjustment, until luminous flux changes
Than being adjusted in error range；
S04: return step S01；
In the step S01, color coordinate drift vector is, the total light flux variation of light source is than Q=(L-)/L, each LED's
Luminous flux change than q=(-)/, wherein P is the parameter preset chromaticity coordinates of light source,For the light source chromaticity coordinates of current detection, L
For the default luminous flux of light source,For the luminous flux of light source of current detection,For the default luminous flux of each LED,For current LED
Luminous flux；
The adjustment process of the chromaticity coordinates of light source includes: in step S03
A01: calculating several resolutes, and resolute is expressed asOr, wherein A be resolute correspond to LED chromaticity coordinates and
According to corresponding LED replacement；
A02: the absolute value of several resolutes is sorted from small to large, and sets initial seniority among brothers and sisters value n=1；
A03: the luminous flux of corresponding LED is changed ratio by n-th of resolute and corresponding LED light flux in selected and sortedDeng
It is divided intoPart ration of division, executes A04；
A04: such asThe luminous flux for then turning down primary corresponding LED by the ration of division less than 90 ° with the angle of corresponding resolute, is such as pressed from both sides
Angle is greater than 90 ° of luminous fluxes that primary corresponding LED is then turned up by the ration of division, does not adjust if angle is equal to 90 °, after every adjustment is primary
Judge whether the chromaticity coordinates of light source is adjusted in error range, then terminate to adjust in this way, such as otherwise executes A05；
A05: judge to adjust whether number reachesIt is secondary, A04 is otherwise such as returned, adds n numerically and returns together
A03；
A06: when n is greater than LED quantity, terminates to adjust and prompt to malfunction.
2. a kind of high-accuracy control method of light source according to claim 1, which is characterized in that the chromaticity coordinates of the light source
Adjustment during:For setting value, and meet, wherein k is more than or equal to 2 and is less than or equal to n.
3. a kind of high-precision control module of light source, including light source and driving circuit, which is characterized in that further include:
Spectrometer detects optical parameter, and optical parameter includes luminous flux and chromaticity coordinates；
Processing unit controls the output of driving circuit；
The light source includes the LED of several different colours；
The processing unit executes following steps:
S01: the parameter of light source and parameter preset and the spectrometer detection of LED, the parameter that will test and parameter preset pair are read
Than obtaining chromaticity coordinates, the offset vector of chromaticity coordinates, luminous flux and luminous flux and changing ratio；
S02: it if the chromaticity coordinates that luminous flux changes when light source returns to previous step if setting in error range, otherwise carries out down
One step；
S03: if the chromaticity coordinates of light source is more than error range, then the chromaticity coordinates of default light source and point arrow of each LED chromaticity coordinates are calculated
Amount, and the data of step S01 is combined to adjust each LED light flux one by one, until the chromaticity coordinates of light source is adjusted in error range, such as
Luminous flux is changed than being more than error range, then with the luminous flux of the current each LED of setting ratio synchronous adjustment, until luminous flux changes
Than being adjusted in error range；
S04: return step S01；
In the step S01, color coordinate drift vector is, the total light flux variation of light source is than Q=(L-)/L, each LED's
Luminous flux change than q=(-)/, wherein P is the parameter preset chromaticity coordinates of light source,For the light source chromaticity coordinates of current detection, L
For the default luminous flux of light source,For the luminous flux of light source of current detection,For the default luminous flux of each LED,It is current
LED light flux；
The adjustment process of the chromaticity coordinates of light source includes: in step S03
A01: calculating several resolutes, and resolute is expressed asOr, wherein A be resolute correspond to LED chromaticity coordinates and
According to corresponding LED replacement；
A02: the absolute value of several resolutes is sorted from small to large, and sets initial seniority among brothers and sisters value n=1；
A03: the luminous flux of corresponding LED is changed ratio by n-th of resolute and corresponding LED light flux in selected and sortedDeng
It is divided intoPart ration of division, executes A04；
A04: such asThe luminous flux for then turning down primary corresponding LED by the ration of division less than 90 ° with the angle of corresponding resolute, is such as pressed from both sides
Angle is greater than 90 ° of luminous fluxes that primary corresponding LED is then turned up by the ration of division, does not adjust if angle is equal to 90 °, after every adjustment is primary
Judge whether the chromaticity coordinates of light source is adjusted in error range, then terminate to adjust in this way, such as otherwise executes A05；
A05: judge to adjust whether number reachesIt is secondary, A04 is otherwise such as returned, adds n numerically and returns together
A03；
A06: when n is greater than LED quantity, terminates to adjust and prompt to malfunction.
4. a kind of high-precision control module of light source according to claim 3, which is characterized in that several different colours
LED include white light LEDs and several monochromatic light LED.
5. a kind of high-precision control module of light source according to claim 4, which is characterized in that the white light LEDs participate in
The luminous flux of light source changes the adjustment of ratio, and the luminous flux that monochromatic light LED participates in light source changes the adjustment of when chromaticity coordinates.
6. a kind of high-precision control module of light source according to claim 3 or 4, which is characterized in that the color of the light source
During the adjustment of coordinate:For setting value, and meet, wherein k is more than or equal to 2 and is less than or equal to n.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746550.0A CN110267404B (en) | 2019-08-14 | 2019-08-14 | A kind of the high-precision control module and method of light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910746550.0A CN110267404B (en) | 2019-08-14 | 2019-08-14 | A kind of the high-precision control module and method of light source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110267404A true CN110267404A (en) | 2019-09-20 |
| CN110267404B CN110267404B (en) | 2019-11-19 |
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| CN113573445A (en) * | 2021-07-23 | 2021-10-29 | 北京字节跳动网络技术有限公司 | Method and device for determining lamp driving parameters and electronic equipment |
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