CN106851916B - A kind of LED light modulations shunt method - Google Patents
A kind of LED light modulations shunt method Download PDFInfo
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- CN106851916B CN106851916B CN201710128309.2A CN201710128309A CN106851916B CN 106851916 B CN106851916 B CN 106851916B CN 201710128309 A CN201710128309 A CN 201710128309A CN 106851916 B CN106851916 B CN 106851916B
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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]
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Abstract
The invention discloses a kind of LED to dim shunt method, including initialization system, arrange parameter, and reads sampled data；Dim signal and shunting signal are sampled respectively, and sampling virtual value Processing Algorithm is called to be handled, obtains dim signal value and shunting signal value；According to dim signal value and shunting signal value, calls light modulation shunting smoothing processing algorithm to handle it, obtain light modulation value and shunting value；According to light modulation value and shunting value, preserves and export light modulation output valve or shunting output valve is dimmed or shunted to LED.The present invention by dim and shunt it is independent separate, unaffected to colour temperature when can make light modulation, consistency is high.And the present invention accurately calculate interference caused by processing can solve manual operation and hardware error by the data sampling, and light variation can be allowed to seamlessly transit by being smoothed to light modulation streamed data, it is effectively improved light visual effect.It the composite can be widely applied in LED technology field.
Description
Technical field
The present invention relates to LED technology fields more particularly to a kind of LED to dim shunt method.
Background technology
With the development of lighting engineering, LED has many advantages, such as that energy conservation and environmental protection, light efficiency height, long lifespan are known as " green energy resource "
Title, it has also become the preferred light source of illuminating industry.However requirement of the raising to LED illumination product of people's life is also increasingly
Height, especially intelligent control.In order to meet diversification application and the secondary energy-saving of people, realize brightness regulation, color temperature change and
Personal settings light environment has become the demand of many occasions.
Related data is studies have shown that current light modulation color-temperature regulating does method：1. constant pressure source+binary channels DC/DC constant currents driving；
2. binary channels constant-current source；But the power-efficient of this two kinds aspects is low, poor reliability, power is unstable, dimming effect is poor, of high cost
The shortcomings of.
Wherein, constant pressure source+binary channels DC/DC constant currents driving or binary channels constant-current source are selected, is adjusted although light modulation may be implemented
Colour temperature, but light modulation and color-temperature regulating are all to share a PWM control interface, it is poor in dimming process neutral color temperature consistency, dim vision
Effect is bad, and power is unstable, and power utilization is low to be doubled, of high cost.Especially require high occasion basic at some
Cannot meet the needs of people, such as hospital, film studio, luxury clubhouse.Simultaneously with constant pressure source+binary channels DC/DC constant currents driving
Way volume it is also bigger, it is very improper to the ultra-thin lamps and lanterns of some small sizes.
Invention content
In order to solve the above-mentioned technical problem, the object of the present invention is to provide a kind of energy power invariabilities, and can carry efficient
A kind of LED light modulations shunt method.
The technical solution used in the present invention is：
A kind of LED light modulations shunt method, includes the following steps：
Initialization system, arrange parameter, and read sampled data；
Dim signal and shunting signal are sampled respectively, and sampling virtual value Processing Algorithm is called to be handled, is obtained
To dim signal value and shunting signal value；
According to dim signal value and shunting signal value, calls light modulation shunting smoothing processing algorithm to handle it, obtain
Light modulation value and shunting value；
According to light modulation value and shunting value, preserves and export light modulation output valve or shunting output valve is dimmed or divided to LED
Stream.
Being further improved for shunt method is dimmed as a kind of LED, it is described that dim signal and shunting are believed respectively
It number is sampled, and sampling virtual value Processing Algorithm is called to be handled, obtain dim signal value and shunting signal value, this step
Suddenly it specifically includes：
The sampling dim signal value SD obtained according to samplingsignal, call sampling virtual value Processing Algorithm to handle and dimmed
Signal value Dsignal；
The sampling shunting signal value SC obtained according to samplingsignal, call sampling virtual value Processing Algorithm to handle and shunted
Signal value Csignal。
Being further improved for shunt method is dimmed as a kind of LED, it is described according to dim signal value and shunting
Signal value calls light modulation shunting smoothing processing algorithm to handle it, obtains light modulation value and shunting value, the step for specifically wrap
It includes：
By dim signal value DsignalIt is converted into light modulation PWM value PWM according to preset ratiod, and call light modulation shunting smooth
Processing Algorithm handles it, obtains light modulation value PWMD；
By shunting signal value CsignalIt is converted into shunting PWM value PWM according to preset ratioC, and call light modulation shunting smooth
Processing Algorithm handles it, obtains shunting value PWMC.
Being further improved for shunt method is dimmed as a kind of LED, it is described according to light modulation value and shunting value, it protects
Deposit and export light modulation output valve or shunting output valve LED is dimmed or is shunted, the step for specifically include：
Judge current light modulation output valve PWMDoutIt is whether equal with light modulation value PWMD, if so, preserving and exporting light modulation
Output valve PWMDout；Conversely, then assignment PWMDout=PWMD, and preserve and then export light modulation output valve PWMDout；
Judge current shunting output valve PWMCoutIt is whether equal with shunting value PWMC, if so, preserving simultaneously output steering
Output valve PWMCout；Conversely, then assignment PWMCout=PWMC, and preserve output steering output valve PWMC in turnout。
Being further improved for shunt method is dimmed as a kind of LED, the sampling virtual value Processing Algorithm,
It specifically includes：
A1, the sampled signal data V for obtaining inputsignal, preset cumulative number condition value SC and equal cumulative number
Condition value CQ；
A2, initialization dynamic variable and static variable and assignment clearing, wherein dynamic variable are output Vout=0, static state becomes
Amount is cumulative number value Vcount=0, equal aggregate-value SVcount=0, starting logo position Startmark=0, update numerical value flag bit
Firstmark=0, update numerical value Vfirst=0；
A3, the data for being switched on and operating are judged, if meeting Startmark=0 or | Vsignal-Vout| >=2, then opening
Machine mark position 1, i.e. Startmark=1, it is First that update numerical value flag bit, which is reset,mark=0, and assignment output data Vout=
Vsignal, and execute step A4；Conversely, then directly executing step A4；
A4, judge whether to meet Firstmark=0, if so, assignment Vfirst=VsignalWith mark Firstmark=1, add up
Secondary numerical value and equal aggregate-value reset Vcount=0、SVcountIt=0 and exits；Conversely, then by VcountFrom adding 1, and execute step A5；
A5, judge update numerical value VfirstWith sampled signal data VsignalIt is whether equal, if so, equal aggregate-value
SVcountFrom adding 1 and execute step A6；Conversely, equal aggregate-value is then reset SVcount=0, and directly exit；
A6, judge whether to meet cumulative number value Vcount>=SC, if so, update numerical value flag bit Firstmark=0, and
Execute step A7；Conversely, then directly exiting；
A7, judge whether to meet equal aggregate-value SVcount>=CQ, if so, illustrating that the signal data of sampling is just to truly have
Valid value update output Vout=Vfirst。
Being further improved for shunt method is dimmed as a kind of LED, the light modulation shunts smoothing processing algorithm,
It is specifically included：
B1, input delta data Vchange, output data Vout, cumulative number value ADDunit, wherein ADDunit＞ 1；
B2, judge delta data VchangeWith output data VoutWhether V is metchange≠Vout, if so, thening follow the steps
B3；Conversely, then directly exiting；
B3, judge delta data VchangeWhether output data V is more thanout, if so, cycle is to VoutIt is 0 with initial value
Cycle-index i is carried out from adding 1, until i=ADDunitOr Vout=Vchange；Conversely, then ring is to VoutIt carries out subtracting 1 and to initial value certainly
It is carried out from adding 1, until i=ADD for 0 cycle-index iunitOr Vout=Vchange；
B4, output Vout。
The beneficial effects of the invention are as follows：
A kind of LED of present invention light modulation shunt methods by dim and shunt it is independent separate, when can make light modulation to colour temperature not by
It influences, consistency is high.And the present invention carries out accurately calculating processing by the data to sampling can solve manual operation and hardware
Interference caused by error, and light variation can be allowed to seamlessly transit by being smoothed to light modulation streamed data, it is effectively improved light
Visual effect.
Description of the drawings
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of step flow chart of LED light modulations shunt method of the present invention.
Specific implementation mode
With reference to figure 1, a kind of LED of the present invention dims shunt method, includes the following steps：
Initialization system, arrange parameter, and read sampled data；
Dim signal and shunting signal are sampled respectively, and sampling virtual value Processing Algorithm is called to be handled, is obtained
To dim signal value and shunting signal value；
According to dim signal value and shunting signal value, calls light modulation shunting smoothing processing algorithm to handle it, obtain
Light modulation value and shunting value；
According to light modulation value and shunting value, preserves and export light modulation output valve or shunting output valve is dimmed or divided to LED
Stream.
Wherein, the initialization system is specifically, such as：The parameters such as I/O, ADC, EEPROM register and variable it is initial
Change definition and assignment.And the last time powered-down preceding light modulation PWMD that can also repeatedly read EEPROM preservationsoutValue and shunting PWMCoutValue
It is compared, ensures accuracy when the inconsistent error of data is re-read, while exporting light modulation PWMDoutValue and shunting PWMCout
It is to prepare into main program that LED is lighted in value control.
It is further used as preferred embodiment, it is described that dim signal and shunting signal are sampled respectively, and call
Sampling virtual value Processing Algorithm is handled, and obtains dim signal value and shunting signal value, the step for specifically include：
The sampling dim signal value SD obtained according to samplingsignal, call sampling virtual value Processing Algorithm to handle and dimmed
Signal value Dsignal；
The sampling shunting signal value SC obtained according to samplingsignal, call sampling virtual value Processing Algorithm to handle and shunted
Signal value Csignal。
It is further used as preferred embodiment, it is described according to dim signal value and shunting signal value, call light modulation point
Levelling is slided Processing Algorithm and is handled it, obtains light modulation value and shunting value, the step for specifically include：
By dim signal value DsignalIt is converted into light modulation PWM value PWM according to preset ratiod, and call light modulation shunting smooth
Processing Algorithm handles it, obtains light modulation value PWMD；
By shunting signal value CsignalIt is converted into shunting PWM value PWM according to preset ratioC, and call light modulation shunting smooth
Processing Algorithm handles it, obtains shunting value PWMC.
It is further used as preferred embodiment, it is described according to light modulation value and shunting value, it preserves and exports light modulation output
Value or shunting output valve LED is dimmed or is shunted, the step for specifically include：
Judge current light modulation output valve PWMDoutIt is whether equal with light modulation value PWMD, if so, preserving and exporting light modulation
Output valve PWMDout；Conversely, then assignment PWMDout=PWMD, and preserve and then export light modulation output valve PWMDout；
Judge current shunting output valve PWMCoutIt is whether equal with shunting value PWMC, if so, preserving simultaneously output steering
Output valve PWMCout；Conversely, then assignment PWMCout=PWMC, and preserve output steering output valve PWMC in turnout。
It is further used as preferred embodiment, the sampling virtual value Processing Algorithm specifically includes：
A1, the sampled signal data V for obtaining inputsignal, preset cumulative number condition value SC and equal cumulative number
Condition value CQ；
A2, initialization dynamic variable and static variable and assignment clearing, wherein dynamic variable are output Vout=0, static state becomes
Amount is cumulative number value Vcount=0, equal aggregate-value SVcount=0, starting logo position Startmark=0, update numerical value flag bit
Firstmark=0, update numerical value Vfirst=0；
A3, the data for being switched on and operating are judged, if meeting Startmark=0 or | Vsignal-Vout| >=2, then opening
Machine mark position 1, i.e. Startmark=1, it is First that update numerical value flag bit, which is reset,mark=0, and assignment output data Vout=
Vsignal, and execute step A4；Conversely, then directly executing step A4；
A4, judge whether to meet Firstmark=0, if so, assignment Vfirst=VsignalWith mark Firstmark=1, add up
Secondary numerical value and equal aggregate-value reset Vcount=0、SVcountIt=0 and exits；Conversely, then by VcountFrom adding 1, and execute step A5；
A5, judge update numerical value VfirstWith sampled signal data VsignalIt is whether equal, if so, equal aggregate-value
SVcountFrom adding 1 and execute step A6；Conversely, equal aggregate-value is then reset SVcount=0, and directly exit；
A6, judge whether to meet cumulative number value Vcount>=SC, if so, update numerical value flag bit Firstmark=0, and
Execute step A7；Conversely, then directly exiting；
A7, judge whether to meet equal aggregate-value SVcount>=CQ, if so, illustrating that the signal data of sampling is just to truly have
Valid value update output Vout=Vfirst。
It is further used as preferred embodiment, the light modulation shunts smoothing processing algorithm, specifically includes：
B1, input delta data Vchange, output data Vout, cumulative number value ADDunit, wherein ADDunit＞ 1；
B2, judge delta data VchangeWith output data VoutWhether V is metchange≠Vout, if so, thening follow the steps
B3；Conversely, then directly exiting；
B3, judge delta data VchangeWhether output data V is more thanout, if so, cycle is to VoutIt is 0 with initial value
Cycle-index i is carried out from adding 1, until i=ADDunitOr Vout=Vchange；Conversely, then ring is to VoutIt carries out subtracting 1 and to initial value certainly
It is carried out from adding 1, until i=ADD for 0 cycle-index iunitOr Vout=Vchange；
B4, output Vout。
From the foregoing it can be that a kind of LED light modulation shunt methods of the present invention are independently separated by dimming and shunting, tune can be made
Light time is unaffected to colour temperature, and consistency is high.And the present invention by the data to sampling accurately calculate and handles and can solve
Interference caused by manual operation and hardware error, and light variation can be allowed smoothed by being smoothed to light modulation streamed data
It crosses, is effectively improved light visual effect.
It is to be illustrated to the preferable implementation of the present invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations or be replaced under the premise of without prejudice to spirit of that invention
It changes, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of LED dims shunt method, which is characterized in that include the following steps：
Initialization system, arrange parameter, and read sampled data；
Dim signal and shunting signal are sampled respectively, and sampling virtual value Processing Algorithm is called to be handled, is adjusted
Optical signal value and shunting signal value；
According to dim signal value and shunting signal value, calls light modulation shunting smoothing processing algorithm to handle it, dimmed
Value and shunting value；
According to light modulation value and shunting value, preserves and export light modulation output valve or shunting output valve is dimmed or shunted to LED；
The sampling virtual value Processing Algorithm, specifically includes：
A1, the sampled signal data V for obtaining inputsignal, preset cumulative number condition value SC and equal cumulative number item
Part value CQ；
A2, initialization dynamic variable and static variable and assignment clearing, wherein dynamic variable are output Vout=0, static variable is
Cumulative number value Vcount=0, equal aggregate-value SVcount=0, starting logo position Startmark=0, update numerical value flag bit
Firstmark=0, update numerical value Vfirst=0；
A3, the data for being switched on and operating are judged, if meeting Startmark=0 or | Vsignal-Vout| >=2, then booting is marked
Remember position 1, i.e. Startmark=1, it is First that update numerical value flag bit, which is reset,mark=0, and assignment output data Vout=
Vsignal, and execute step A4；Conversely, then directly executing step A4；
A4, judge whether to meet Firstmark=0, if so, assignment Vfirst=VsignalWith mark Firstmark=1, add up secondary
Numerical value and equal aggregate-value reset Vcount=0, SVcountIt=0 and exits；Conversely, then by VcountFrom adding 1, and execute step A5；
A5, judge update numerical value VfirstWith sampled signal data VsignalIt is whether equal, if so, equal aggregate-value SVcountFrom adding
1 and execute step A6；Conversely, equal aggregate-value is then reset SVcount=0, and directly exit；
A6, judge whether to meet cumulative number value Vcount>=SC, if so, update numerical value flag bit Firstmark=0, and execute
Step A7；Conversely, then directly exiting；
A7, judge whether to meet equal aggregate-value SVcount>=CQ, if so, illustrating that the signal data of sampling is correct virtual value
Update output Vout=Vfirst。
2. a kind of LED according to claim 1 dims shunt method, it is characterised in that：It is described respectively to dim signal and
Shunting signal is sampled, and sampling virtual value Processing Algorithm is called to be handled, and obtains dim signal value and shunting signal value,
The step for specifically include：
The sampling dim signal value SD obtained according to samplingsignal, sampling virtual value Processing Algorithm is called to handle to obtain dim signal
Value Dsignal；
The sampling shunting signal value SC obtained according to samplingsignal, sampling virtual value Processing Algorithm is called to handle to obtain shunting signal
Value Csignal。
3. a kind of LED according to claim 1 dims shunt method, it is characterised in that：It is described according to dim signal value
With shunting signal value, calls light modulation shunting smoothing processing algorithm to handle it, obtain light modulation value and shunting value, the step for
It specifically includes：
By dim signal value DsignalIt is converted into light modulation PWM value PWM according to preset ratiod, and call light modulation shunting smoothing processing
Algorithm handles it, obtains light modulation value PWMD；
By shunting signal value CsignalIt is converted into shunting PWM value PWM according to preset ratioC, and call light modulation shunting smoothing processing
Algorithm handles it, obtains shunting value PWMC.
4. a kind of LED according to claim 1 dims shunt method, it is characterised in that：It is described according to light modulation value and point
Flow valuve, preserve and export light modulation output valve or shunting output valve LED is dimmed or is shunted, the step for specifically include：
Judge current light modulation output valve PWMDoutIt is whether equal with light modulation value PWMD, if so, preserving and exporting light modulation output
Value PWMDout；Conversely, then assignment PWMDout=PWMD, and preserve and then export light modulation output valve PWMDout；
Judge current shunting output valve PWMCoutIt is whether equal with shunting value PWMC, if so, preserving simultaneously output steering output
Value PWMCout；Conversely, then assignment PWMCout=PWMC, and preserve output steering output valve PWMC in turnout。
5. a kind of LED according to claim 1 or 3 dims shunt method, it is characterised in that：The light modulation shunting is smooth
Processing Algorithm specifically includes：
B1, input delta data Vchange, output data Vout, cumulative number value ADDunit, wherein ADDunit＞ 1；
B2, judge delta data VchangeWith output data VoutWhether V is metchange≠Vout, if so, thening follow the steps B3；Instead
It, then directly exit；
B3, judge delta data VchangeWhether output data V is more thanout, if so, cycle is to VoutThe cycle for being 0 with initial value
Number i is carried out from adding 1, until i=ADDunitOr Vout=Vchange；Conversely, then ring is to VoutCertainly subtract 1 and be to initial value
0 cycle-index i is carried out from adding 1, until i=ADDunitOr Vout=Vchange；
B4, output Vout。
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| CN106851916B true CN106851916B (en) | 2018-10-12 |
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| CN205610982U (en) * | 2016-03-28 | 2016-09-28 | 阿坝师范学院 | LED lamp that LED lamp switch was adjusted luminance and is mixed colours and review drive circuit and have it |
| CN205754954U (en) * | 2016-05-18 | 2016-11-30 | 深圳市越宏普照照明科技有限公司 | LED light modulation color-temperature regulating circuit and light fixture |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07176389A (en) * | 1993-12-21 | 1995-07-14 | Canon Inc | Fluorescent lamp lighting device |
| US5559394A (en) * | 1994-03-04 | 1996-09-24 | International Rectifier Corporation | MOS gate driver for ballast circuits |
| CN104768280A (en) * | 2015-01-22 | 2015-07-08 | 浙江凯耀照明股份有限公司 | Color temperature compensation method for LED lamp |
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| CN205610982U (en) * | 2016-03-28 | 2016-09-28 | 阿坝师范学院 | LED lamp that LED lamp switch was adjusted luminance and is mixed colours and review drive circuit and have it |
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| CN106851916A (en) | 2017-06-13 |
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Denomination of invention: A method of LED dimming and splitting Effective date of registration: 20210129 Granted publication date: 20181012 Pledgee: China Co. truction Bank Corp Guangzhou Tianhe subbranch Pledgor: GUANGDONG DELOS LIGHTING INDUSTRIAL Co.,Ltd. Registration number: Y2021440000031 |