CN107148127A - A kind of method of automatic detection power supply to be measured or dimming light source performance - Google Patents
A kind of method of automatic detection power supply to be measured or dimming light source performance Download PDFInfo
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- CN107148127A CN107148127A CN201710600934.2A CN201710600934A CN107148127A CN 107148127 A CN107148127 A CN 107148127A CN 201710600934 A CN201710600934 A CN 201710600934A CN 107148127 A CN107148127 A CN 107148127A
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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]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The invention discloses a kind of automatic detection power supply to be measured or the method for dimming light source performance, including：Brightness adjustment control is carried out to power supply to be measured or light source according to default dimming control parameters；Postpone the scintillation index that preset time obtains corresponding with the dimming control parameters power supply or light source to be measured；Judge whether the value of the scintillation index exceedes preset value；Obtain the output parameter of corresponding with the dimming control parameters power supply or light source to be measured；The light modulation linearity of power supply to be measured or light source is calculated according to the dimming control parameters and output parameter.Continuous and uniform brightness adjustment control can be carried out to power supply to be measured automatically by default dimming control parameters, testing efficiency and accurate testing degree is improved；Dimming control parameters and corresponding output parameter are carried out with quantitative analysis, obtained stroboscopic point and the result of the light modulation linearity are more objective and accurate, reduce erroneous judgement of failing to judge.The present invention program can realize test automation, reduce tester's labor intensity.
Description
Technical field
The present invention relates to the side of technical field of measurement and test, more particularly to a kind of automatic detection power supply to be measured or dimming light source performance
Method.
Background technology
The luminous efficiencies of LED are high, are the first choices of current energy-saving lamp；And LED is also easy to realize brightness and colour switching,
While improving lighting environment, secondary energy-saving is realized.The brightness of LED lamplight and color adaptation mainly pass through LED light modulation driving electricity
Source realizes that light modulation can reduce LED luminance temperature, can improve the service life of LED lamp again, therefore, and dimming power source will
Can be the trend of LED drive power development.
The linear good driving power supply cooperated with LED illuminator of light modulation, can make the change magnificent mansion of LED luminance and color,
Coordinate intelligent dimming technology, user need to only press some key or send certain order, you can recall preprogramming or storage
Color and brightness combination, without using when adjusted temporarily, but this is dependent on the light modulation linear properties of driving power supply well.
At present, the method for evaluating the light modulation linear properties of dimming power source is mainly：In two-dimensional coordinate system, abscissa is used
Brightness adjustment control variable is represented, such as：DC light-modulating modes, then represent dimmer voltage；PWM light-modulating modes, then represent PWM duties
Than；AC light-modulating modes, then represent light modulation angle or cut angle size.Ordinate represents the output current of dimming power source.Coordinate
Each point in system, just represents the dimming power source light modulation output current corresponding in some brightness adjustment control variable.Connect light modulation
After power supply normal work, the light modulation action of from minimum to maximum (or from be up to minimum) is carried out, each action will record tune
Photocontrol parameter and light modulation output current, and recorded in two-dimensional coordinate system, all measuring points are linked to be line successively.If this line
Closer to straight line, then the light modulation linear properties of dimming power source are better.The data record and line of this evaluation method all use people
The mode of work, workload is very big, and exchanging evaluating for actinic performance can only be by the way of sampling observation, neither one quantitative analysis
Objective basis；And testing staff reduces workload to improve detection efficiency, it is likely that record points can be reduced, so that
The accuracy for influenceing it to evaluate.
The bad LED power of dimming behavior often occurs in dimming process with stroboscopic, and stroboscopic is often only at certain
One or certain it is several dim point, if being adjusted by manpower merely, it is difficult to which finding out causes the light modulation point of stroboscopic.When passing through
When human eye determines whether to exist stroboscopic, the requirement to surrounding environment is higher, if in the case where background is very bright, some are less bright
Aobvious stroboscopic is difficult to find, and human eye stares at LED and detects that stroboscopic can produce fatigue for a long time, causes to judge by accident or fails to judge, also can
Injury is brought to human eye.
The problem of either research stroboscopic is with the linearity is dimmed, or other light modulation problems of dimming power source are studied, often
Act and occur with light modulation, for example, stroboscopic point only may just occur in some or some light modulation point, if by manually entering
Row brightness adjustment control, will not only spend a large amount of manpowers and time, and be difficult to find out the light modulation point gone wrong, and the action of hand is slightly larger
Or it is slightly smaller, the light modulation point gone wrong may be missed.Also, want accurate evaluation dim linear properties, necessarily need into
The uniform light modulation of row.This is difficult to accomplish for artificial light modulation；When being carried out by the way of electronic dimming, also need
Will be by special signal generator, by manually controlling to realize with data record, it is also desirable to take a substantial amount of time and
Energy.
The content of the invention
The technical problems to be solved by the invention are：The side of a kind of automatic detection power supply to be measured or dimming light source performance is provided
Method, can both improve detection efficiency, and the accuracy of detection dimming behavior can be improved again.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of method of automatic detection power supply to be measured or dimming light source performance, including：
S1, according to default dimming control parameters brightness adjustment control is carried out to power supply to be measured or light source；
S2, delay preset time obtain the scintillation index of corresponding with the dimming control parameters power supply or light source to be measured；
S3, judge the scintillation index value whether exceed preset value；If so, step S4 is then performed, if it is not, then performing step
Rapid S5；
S4, stop brightness adjustment control in the first preset time, and be spaced the second preset time repeat to obtain power supply to be measured or
N scintillation index of light source, calculates the average value of the value of the n scintillation index, when the average value is more than preset value, then
The dimming control parameters are stroboscopic point, obtain the output ginseng of corresponding with the dimming control parameters power supply or light source to be measured
Number；
S5, acquisition corresponding with the dimming control parameters power supply or light source to be measured output parameter；
S6, the light modulation linearity according to the dimming control parameters and output parameter calculating power supply to be measured or light source.
The beneficial effects of the present invention are：Power supply to be measured can be carried out automatically by default dimming control parameters continuous
And uniform brightness adjustment control, improve testing efficiency and accurate testing degree；Dimming control parameters and corresponding output parameter are determined
The result of amount analysis, obtained stroboscopic point and the light modulation linearity is more objective and accurate, reduces erroneous judgement of failing to judge；Also, delay is certain
Time obtains scintillation index again, and the data of reading can be made more accurate.The present invention program can realize test automation, reduce
Tester's labor intensity.
Brief description of the drawings
Fig. 1 for the present invention automatic detection power supply to be measured or light source dimming behavior flow chart；
Fig. 2 for the embodiment of the present invention two automatic detection power supply to be measured or light source dimming behavior flow chart；
The variation relation figure that Fig. 3 acts for the output current of the embodiment of the present invention three with light modulation；
The variation relation figure that Fig. 4 acts for the scintillation index of the embodiment of the present invention three with light modulation.
Embodiment
To describe technology contents, the objects and the effects of the present invention in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：Quantitative analysis, obtained frequency are carried out to dimming control parameters and output parameter
The result of flash-point and the light modulation linearity is more objective and accurate, reduces erroneous judgement of failing to judge.
A kind of method that refer to Fig. 1 and Fig. 2, automatic detection power supply to be measured or dimming light source performance, including：
S1, according to default dimming control parameters brightness adjustment control is carried out to power supply to be measured or light source；
S2, delay preset time obtain the scintillation index of corresponding with the dimming control parameters power supply or light source to be measured；
S3, judge the scintillation index value whether exceed preset value；If so, step S4 is then performed, if it is not, then performing step
Rapid S5；
S4, stop brightness adjustment control in the first preset time, and be spaced the second preset time repeat to obtain power supply to be measured or
N scintillation index of light source, calculates the average value of the value of the n scintillation index, when the average value is more than preset value, then
The dimming control parameters are stroboscopic point, obtain the output ginseng of corresponding with the dimming control parameters power supply or light source to be measured
Number；
S5, acquisition corresponding with the dimming control parameters power supply or light source to be measured output parameter；
S6, the light modulation linearity according to the dimming control parameters and output parameter calculating power supply to be measured or light source.
It was found from foregoing description, the beneficial effects of the present invention are：Can be automatically right by default dimming control parameters
Power supply to be measured carries out continuous and uniform brightness adjustment control, improves testing efficiency and accurate testing degree；To dimming control parameters and correspondingly
Output parameter carry out quantitative analysis, the result of obtained stroboscopic point and the light modulation linearity is more objective and accurate, and reduction is failed to judge mistake
Sentence；Also, delay certain time obtains scintillation index again, and the data of reading can be made more accurate.By in preset time
Calculate the average value of scintillation index to judge corresponding dimming control parameters whether as stroboscopic point so that result of determination more may be used
Lean on, the computational methods of average value can be realized by the computational methods of window average, average value can be arithmetic mean of instantaneous value,
Mean square, harmonic-mean or weighted average, can be set as needed.
Further, the step S1 is specially：
Recognize the light-modulating mode of power supply to be measured or light source；
According to the light-modulating mode default light modulation total time and the number range and step-length of dimming control parameters；
According to the number range and step-length, the control parameter number for obtaining including more than two dimming control parameters is calculated
The step number of row and dimming control parameters；
According to the light modulation total time and the number range and step-length, calculating obtains the dimming interval time；
According to the dimming control parameters and the dimming interval time sequentially taken out in control parameter ordered series of numbers, to electricity to be measured
Source or light source carry out brightness adjustment control.
Seen from the above description, different light-modulating modes can be known when carrying out brightness adjustment control to power supply to be measured or light source
Not, then different dimming control parameters scopes are set according to different light-modulating modes, and dimming control parameters are a series of
Equal difference parameter.
Further, in step S4, when the average value is less than or equal to preset value, then the dimming control parameters are not
Stroboscopic point.
Further, in step S4, after the dimming control parameters are judged as stroboscopic point, stop carrying out brightness adjustment control.
Further, in step S4, after the dimming control parameters are judged as stroboscopic point, next brightness adjustment control ginseng is obtained
The corresponding scintillation index of number, and return to step S3.
Seen from the above description, after determined stroboscopic point, locking can be carried out to stroboscopic point and stops brightness adjustment control, also may be used
To proceed the light modulation of next step, it can be configured according to the need for user.
Further, the output parameter includes current value, and step S6 is specifically included：
Calculate the difference of the adjacent current value got；
Obtain difference maximum in the difference of current value；
The light modulation linearity for obtaining power supply to be measured is calculated according to formula K=N* Δs Ymax/ (I (m)-I (1)), wherein, K is
The linearity is dimmed, N is the step number of dimming control parameters, and Δ Ymax is difference maximum in the difference of current value, and I (m) is acquisition
Last current value arrived, I (1) is first current value got.
Further, the output parameter includes brightness value, and step S6 is specifically included：
Calculate the difference of the adjacent brightness value got；
Obtain difference maximum in the difference of brightness value；
The light modulation linearity for obtaining light source to be measured is calculated according to formula M=N* Δs Lmax/ (L (m)-L (1)), wherein, M is
The linearity is dimmed, N is the step number of dimming control parameters, and Δ Lmax is difference maximum in the difference of brightness value, and L (m) is acquisition
Last brightness value arrived, L (1) is first brightness value got.
Seen from the above description, by the maximum difference of output parameter, step number, first output parameter and last is defeated
Go out parameter and quantitative analysis is carried out to the light modulation linearity of power supply to be measured or light source to be measured, obtained result is more objective and accurate, subtracts
Fail to judge less erroneous judgement.
Further, also include after the step S5：
Judge first current value got and last current value whether in the first preset range respectively；
If it is not, then the dimming behavior of power supply to be measured is unqualified.
Seen from the above description, the current value of output just judges the light modulation of power supply to be measured in certain preset range
Can be qualified.
Further, also include after the step S5：
Judge first brightness value got and last brightness value whether in the second preset range respectively；
If it is not, then the dimming behavior of light source to be measured is unqualified.
Seen from the above description, the brightness value of output just judges the light modulation of light source to be measured in certain preset range
Can be qualified.
Further, also include after the step S5：
According to the scintillation index, the worst-case value of the value of the scintillation index is obtained；
Judge whether the worst-case value is more than default worst-case value；
If so, then the dimming behavior of the power supply to be measured or light source is unqualified.
Seen from the above description, only when the worst-case value of scintillation index is less than or equal to default worst-case value, power supply to be measured
Or the dimming behavior of light source is just qualified.
Fig. 1 is refer to, embodiments of the invention one are：
A kind of method for the dimming behavior for obtaining power supply to be measured or light source automatically, carries out quantitative analysis to dimming behavior, obtains
The stroboscopic point arrived is more objective reliable.Comprise the following steps：
S1, according to default dimming control parameters brightness adjustment control is carried out to power supply to be measured or light source.The power supply to be measured can
Think LED drive power, light source to be measured can be LED, they have different light-modulating modes, different light-modulating mode correspondences
Different dimming control parameters, for example, the dimming control parameters of DC light-modulating modes are dimmer voltage, the light modulation of PWM light-modulating modes
Control parameter is PWM duty cycle, and dutycycle is generally 0%-100%, is also likely to be 10%-90% certainly, AC light-modulating modes
Dimming control parameters are light modulation angle, and the maximum anglec of rotation is generally 270 ° or 275 °.
S2, delay preset time obtain the scintillation index of corresponding with the dimming control parameters power supply or light source to be measured.
Preset time can be configured as needed, it is preferred that the preset time in the present embodiment is the light modulation of dimming control parameters
Interval time, i.e., after a dimming control parameters are inputted, the dimming interval time is waited, then read scintillation index.
S3, judge the scintillation index value whether exceed preset value；If so, step S4 is then performed, if it is not, then performing step
Rapid S5.The size of preset value can be configured as needed.
S4, stop brightness adjustment control in the first preset time, and be spaced the second preset time repeat to obtain power supply to be measured or
N scintillation index of light source, calculates the average value of the value of the n scintillation index, when the average value is more than preset value, then
The dimming control parameters are stroboscopic point, obtain the output ginseng of corresponding with the dimming control parameters power supply or light source to be measured
Number.When the average value is less than or equal to preset value, then the dimming control parameters are not stroboscopic point.First preset time and
The size of two preset times can be configured as needed, and the second preset time can set shorter.In the present embodiment, specifically
For：After n scintillation index is read, the average value of value of this n scintillation index is calculated as the foundation for judging whether stroboscopic,
The average value can be calculated by the computational methods of window average.If average value is less than or equal to the preset value, system
Judge, without stroboscopic, next step light modulation action to be carried out immediately.If now average value is default first still greater than the preset value
In time, continue to stop brightness adjustment control, continue to read (n+1)th scintillation index, and calculate from the 2nd to the (n+1)th scintillation index
Value average value as the basis for estimation with the presence or absence of stroboscopic, by that analogy, until average value is less than or equal to frequency preset value, or
First preset time terminates.This finally calculates obtained average value and also serves as scintillation index under corresponding dimming control parameters
Value, recorded in test data.
After the dimming control parameters are judged as stroboscopic point, it can stop carrying out brightness adjustment control or continue to obtain next
The corresponding scintillation index of dimming control parameters, and return to step S3.Whether brightness adjustment control is proceeded, and user can be as needed
It is configured.
S5, acquisition corresponding with the dimming control parameters power supply or light source to be measured output parameter.In the present embodiment, sentence
After whether a certain dimming control parameters that break are stroboscopic point, then the output parameter of corresponding power supply to be measured or light source is obtained, it is described
Output parameter includes current value and brightness value.If the value of the corresponding scintillation index of a certain dimming control parameters is less than or equal to default
Value, then can directly obtain corresponding current value and brightness value.If the value of the corresponding scintillation index of a certain dimming control parameters
More than preset value, then after whether dimming control parameters to be determined are stroboscopic point, then obtain corresponding current value and brightness value.
S6, the light modulation linearity according to the dimming control parameters and output parameter calculating power supply to be measured or light source.May be used also
To calculate the actual dimming scope value of power supply to be measured or light source.With reference to the inspection of light modulation flicker, the light modulation linearity and dimming scope
Survey, with an automatic light meter while, realize the full performance detection of light modulation.
The present embodiment can carry out continuous uniform tune to power supply to be measured or light source automatically by default dimming control parameters
Photocontrol, improves testing efficiency and test accuracy；Quantitative analysis is carried out to dimming control parameters and corresponding output parameter, obtained
It is as a result more objective and accurate to the stroboscopic point and the light modulation linearity of power supply to be measured or light source, reduce erroneous judgement of failing to judge.
Embodiment two
Fig. 2 is refer to, embodiments of the invention two are further expanded for above-described embodiment one, and something in common is no longer gone to live in the household of one's in-laws on getting married
State, difference is, step S1 is specifically included：
S11, identification power supply to be measured or light source light-modulating mode；
S12, number range and step-length according to the light-modulating mode default light modulation total time and dimming control parameters；This
Embodiment is by taking DC light-modulating modes as an example, then dimming control parameters are dimmer voltage, it is assumed that light modulation total time is 10 seconds, dimmer voltage
Number range be 1-5, step-length is 1.
S13, according to the number range and step-length, calculate and obtain the control comprising more than two dimming control parameters and join
Number ordered series of numbers；For example, control parameter ordered series of numbers is 1,2,3,4,5.
S14, according to the light modulation total time and number range and step-length, calculating obtains the dimming interval time；Enter
One step, the dimming interval time is calculated according to formula S=T*L/ (X2-X1), wherein, S is the dimming interval time, and T is total for light modulation
Time, L is the step-length of dimming control parameters, and X1 is the minimum value of dimming control parameters, and X2 is the maximum of dimming control parameters；
The dimming interval time consistency of each dimming control parameters in control parameter ordered series of numbers, then corresponding with above-mentioned control parameter ordered series of numbers
The dimming interval time is 2.5 seconds.
S15, according to the dimming control parameters and the dimming interval time sequentially taken out in control parameter ordered series of numbers, treat
Survey power supply or light source carries out brightness adjustment control.That is, when carrying out light modulation test for the first time, the voltage for inputing to power supply to be measured is
1, interval carries out second of light modulation test, the voltage for inputing to power supply to be measured is changed into 2, then is spaced after 2.5 seconds, carries out after 2.5 seconds
Third time light modulation test, the voltage for inputing to power supply to be measured is changed into 3, by that analogy.
Step S6 is specifically included：
The difference for the adjacent current value that S61, calculating are got, and calculate the difference of the adjacent brightness value got
Value.Assuming that obtained electric current value set is { a, b, c, d, e }, that is, calculate | b-a |, | c-b |, | d-c |, | e-d |, further,
In order to prevent obtained difference from being negative value, therefore also signed magnitude arithmetic(al) is carried out to difference.
S62, obtain difference maximum in maximum difference in the difference of current value and the difference of brightness value.Obtain |
B-a |, | c-b |, | d-c |, | e-d | maximum value in four values.
S63, calculated according to formula K=N* Δs Ymax/ (I (m)-I (1)) and obtain the light modulation linearity of power supply to be measured, wherein,
K is the light modulation linearity, and N is the step number of dimming control parameters, and Δ Ymax is difference maximum in the difference of current value, and I (m) is to obtain
Last current value got, I (1) is first current value got.
The light modulation linearity for obtaining light source to be measured is calculated according to formula M=N* Δs Lmax/ (L (m)-L (1)), wherein, M is
The linearity is dimmed, N is the step number of dimming control parameters, and Δ Lmax is difference maximum in the difference of brightness value, and L (m) is acquisition
Last brightness value arrived, L (1) is first brightness value got.
Also include after the step S5：
Judge first current value got and last current value whether in the first preset range respectively；If no
It is that then the dimming behavior of power supply to be measured is unqualified.The size of first preset range can be configured as needed.
Judge first brightness value got and last brightness value whether in the second preset range respectively；If no
It is that then the dimming behavior of light source to be measured is unqualified.The size of second preset range can be configured as needed.
According to the scintillation index, the worst-case value of the value of the scintillation index is obtained；Judge whether the worst-case value is more than
Default worst-case value；If so, then the dimming behavior of the power supply to be measured or light source is unqualified.The size of the worst-case value can root
Need to be configured according to user.
In the present embodiment, the dimming scope value for obtaining power supply to be measured can also be calculated according to current value, according to brightness value meter
Calculate the dimming scope value of light source to be measured, finally can also as needed derived current value with dimming control parameters change curve,
Brightness value is with the change curve of the change curve of dimming control parameters and the value of scintillation index with dimming control parameters.
Embodiment three
Fig. 3 and Fig. 4 is refer to, the embodiment of the present invention three is a concrete application scene of above-described embodiment.
Default light modulation total time is T, and the step-length of dimming control parameters is L, and the minimum value of dimming control parameters is X1, maximum
It is worth for X2, then dimming control parameters are just that from X1 to X2, step-length is L ordered series of numbers.According to light modulation total time T and X1, X2 and L
It can calculate and obtain dimming time interval S, S=T*L/ (X2-X1).When carrying out brightness adjustment control, step-length is exported at interval of the S times
For L dimming control parameters to power supply to be measured.
Each dimming control parameters can correspond to one group of output parameter, and each of which group output parameter includes a current value
And scintillation index, the current value of output is designated as { I (1), I (2), I (i) ..., I (m) }, the value of the scintillation index of output is designated as
{ F (1), F (2), F (i) ..., F (m) }.Then the difference of two neighboring current value is calculated, and filters out the maximum of the difference
Value, is designated as Δ Ymax, light modulation linearity K=N* Δs Ymax/ (I (m)-I (1)).K value then shows to dim the linearity closer to 1
Better.As shown in figure 3, being the variation relation figure that is acted with light modulation of output current of the present embodiment, each light modulation action has one
Individual corresponding dimming control parameters, it can be seen that the light modulation linearity of power supply to be measured is bad.As shown in figure 4, being
The variation relation figure that the value of the scintillation index of the present embodiment is acted with light modulation, it can be seen that in light modulation to the 200th step
When have stroboscopic phenomenon.
In summary, the method for a kind of dimming behavior for obtaining power supply to be measured or light source automatically that the present invention is provided, can be with
Stroboscopic point and light modulation linear properties to power supply to be measured or light source are tested automatically, and testing efficiency is high, and passes through quantitative scoring
The evaluation result of obtained stroboscopic Points And lines performance is reliable.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (10)
1. a kind of method of automatic detection power supply to be measured or dimming light source performance, it is characterised in that including：
S1, according to default dimming control parameters brightness adjustment control is carried out to power supply to be measured or light source；
S2, delay preset time obtain the scintillation index of corresponding with the dimming control parameters power supply or light source to be measured；
S3, judge the scintillation index value whether exceed preset value；If so, step S4 is then performed, if it is not, then performing step
S5；
S4, stop brightness adjustment control in the first preset time, and be spaced the second preset time to repeat to obtain power supply to be measured or light source
N scintillation index, calculate the average value of the value of the n scintillation index, it is when the average value is more than preset value, then described
Dimming control parameters are stroboscopic point, obtain the output parameter of corresponding with the dimming control parameters power supply or light source to be measured；
S5, acquisition corresponding with the dimming control parameters power supply or light source to be measured output parameter；
S6, the light modulation linearity according to the dimming control parameters and output parameter calculating power supply to be measured or light source.
2. the method for automatic detection power supply to be measured according to claim 1 or dimming light source performance, it is characterised in that described
Step S1 is specially：
Recognize the light-modulating mode of power supply to be measured or light source；
According to the light-modulating mode default light modulation total time and the number range and step-length of dimming control parameters；
According to the number range and step-length, calculate obtain the control parameter ordered series of numbers comprising more than two dimming control parameters and
The step number of dimming control parameters；
According to the light modulation total time and the number range and step-length, calculating obtains the dimming interval time；
According to the dimming control parameters and the dimming interval time sequentially taken out in control parameter ordered series of numbers, to power supply to be measured or
Light source carries out brightness adjustment control.
3. the method for automatic detection power supply to be measured according to claim 1 or dimming light source performance, it is characterised in that step
In S4, when the average value is less than or equal to preset value, then the dimming control parameters are not stroboscopic point.
4. the method for automatic detection power supply to be measured according to claim 1 or dimming light source performance, it is characterised in that step
In S4, after the dimming control parameters are judged as stroboscopic point, stop carrying out brightness adjustment control.
5. the method for automatic detection power supply to be measured according to claim 1 or dimming light source performance, it is characterised in that step
In S4, after the dimming control parameters are judged as stroboscopic point, the corresponding scintillation index of next dimming control parameters is obtained, and return
Return step S3.
6. the method for automatic detection power supply to be measured according to claim 2 or dimming light source performance, it is characterised in that described
Output parameter includes current value, and step S6 is specifically included：
Calculate the difference of the adjacent current value got；
Obtain difference maximum in the difference of current value；
The light modulation linearity for obtaining power supply to be measured is calculated according to formula K=N* Δs Ymax/ (I (m)-I (1)), wherein, K is light modulation
The linearity, N is the step number of dimming control parameters, and Δ Ymax is difference maximum in the difference of current value, and I (m) is got
Last current value, I (1) is first current value getting.
7. the method for automatic detection power supply to be measured according to claim 2 or dimming light source performance, it is characterised in that described
Output parameter includes brightness value, and step S6 is specifically included：
Calculate the difference of the adjacent brightness value got；
Obtain difference maximum in the difference of brightness value；
The light modulation linearity for obtaining light source to be measured is calculated according to formula M=N* Δs Lmax/ (L (m)-L (1)), wherein, M is light modulation
The linearity, N is the step number of dimming control parameters, and Δ Lmax is difference maximum in the difference of brightness value, and L (m) is got
Last brightness value, L (1) is first brightness value got.
8. the method for automatic detection power supply to be measured according to claim 2 or dimming light source performance, it is characterised in that described
Also include after step S5：
Judge first current value got and last current value whether in the first preset range respectively；
If it is not, then the dimming behavior of power supply to be measured is unqualified.
9. the method for automatic detection power supply to be measured according to claim 2 or dimming light source performance, it is characterised in that described
Also include after step S5：
Judge first brightness value got and last brightness value whether in the second preset range respectively；
If it is not, then the dimming behavior of light source to be measured is unqualified.
10. the method for automatic detection power supply to be measured according to claim 2 or dimming light source performance, it is characterised in that institute
Stating also includes after step S5：
According to the scintillation index, the worst-case value of the value of the scintillation index is obtained；
Judge whether the worst-case value is more than default worst-case value；
If so, then the dimming behavior of the power supply to be measured or light source is unqualified.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114252799A (en) * | 2021-12-20 | 2022-03-29 | 迈思普电子股份有限公司 | Four-in-one automatic dimming testing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044886A (en) * | 1990-02-01 | 1990-08-22 | 自贡市鸿鹤化工总厂 | High-low pressure Dimming for Discharge Lamps ignition device |
| CN101938865A (en) * | 2009-06-30 | 2011-01-05 | 飞宏科技股份有限公司 | Dimmable light-emitting diode device used for reducing output ripple current and driving circuit thereof |
| WO2014005983A1 (en) * | 2012-07-04 | 2014-01-09 | Zentrum Mikroelektronik Dresden Ag | Method for controlling light-emitting diodes, in which the load current is in phase with the alternating voltage supply |
| US20160100464A1 (en) * | 2014-02-17 | 2016-04-07 | Peter W. Shackle | Ac-powered led light engine |
| US20160128153A1 (en) * | 2014-11-05 | 2016-05-05 | Seoul Semiconductor Co., Ltd. | Led lighting apparatus with improved flicker index |
-
2017
- 2017-07-21 CN CN201710600934.2A patent/CN107148127B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044886A (en) * | 1990-02-01 | 1990-08-22 | 自贡市鸿鹤化工总厂 | High-low pressure Dimming for Discharge Lamps ignition device |
| CN101938865A (en) * | 2009-06-30 | 2011-01-05 | 飞宏科技股份有限公司 | Dimmable light-emitting diode device used for reducing output ripple current and driving circuit thereof |
| WO2014005983A1 (en) * | 2012-07-04 | 2014-01-09 | Zentrum Mikroelektronik Dresden Ag | Method for controlling light-emitting diodes, in which the load current is in phase with the alternating voltage supply |
| US20160100464A1 (en) * | 2014-02-17 | 2016-04-07 | Peter W. Shackle | Ac-powered led light engine |
| US20160128153A1 (en) * | 2014-11-05 | 2016-05-05 | Seoul Semiconductor Co., Ltd. | Led lighting apparatus with improved flicker index |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114252799A (en) * | 2021-12-20 | 2022-03-29 | 迈思普电子股份有限公司 | Four-in-one automatic dimming testing device |
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