CN109951922A - A kind of light source light spectrum self-correcting and self-test closed-loop control system and its control method - Google Patents
A kind of light source light spectrum self-correcting and self-test closed-loop control system and its control method Download PDFInfo
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Abstract
The invention discloses a kind of light source light spectrum self-correctings and self-test closed-loop control system and its control method, it include light source controller, the light source controller is connected with PERCOM peripheral communication component, for storing the storage assembly of different stalls standard four coloured light flux and four color color temperature informations, the ambient light sensor of feedback environment four coloured light flux and four color color temperature informations, it exports four colored lights pwm signal of gear and corrects the pwm signal output interface of four colored lights pwm signals, the pwm signal output interface is connected with LED light constant current driving assembly, the LED light constant current driving assembly respectively with red LED lamp, green light LED lamp, blue LED lamp, white LED lamp connection, the ambient light sensor is connected with the acquisition optical module of the LED light for acquiring four colored lights, the PERCOM peripheral communication component is connected with Lamps and lanterns peripheral control unit, light source light spectrum self-correcting and self-test closed-loop control effectively improve illumination, and there are the states of error.
Description
[technical field]
The present invention relates to Lighting control field, especially a kind of light source light spectrum self-correcting and self-test closed-loop control system
And its control method.
[background technique]
Existing LED lamp is made of multiple semiconductor materials such as multiple IC, LED, resistance mostly, due to semiconductor material
There are errors, and then affect the consistency of the light emission luminance of LED, color wavelength, specifically be easy to cause following influence:
First, the error of constant current driver circuit for LED output electric current influences LED light emission luminance, output current error includes perseverance
The error that stream driving IC and current limliting detection resistance generate, the two additive error reach ± 5%, so that circuit output 1A electric current misses
Difference is between 950-1050mA, or even has the electric current of difference 100mA, and such error largely affects LED light emission luminance.
Second, LED light emission luminance range is wide, if feux rouges is 40-60LM, green light 65-85LM, blue light 14-24LM,
It encapsulates producer and multiple brightness class is segmented according to different chips, to reduce luminance errors, but the process for brightness class of classifying is again
Increase production cost simultaneously, is unfavorable for competition of the product in price.
Third, LED color wave-length coverage is wide, general LED chip producer is that a color according to wavelength is divided into 4 class,
Every 2.5nm is then a class.
Fourth, white light LED color temperature range is wide, the fluorescent powder of different-colour is added such as on blue chip, then can accordingly be obtained
The colour temperature needed, encapsulation producer is also to 4 class of each colour temperature section point.
Fifth, adjustable white light colour temperature (CCT) is inaccurate, in the prior art, light mixing mainly is carried out using double-colored temperature LED, i.e.,
The two colour temperature LED light mixings of 3200K warm white and 5600K cool white are generally used, the colour temperature between 3200-6500K are obtained, by above-mentioned
One, defect present in two, four is it is found that finally affect the consistency of color temperature of mixed light.
That sixth, the more colors of R/G/B/W mix white light colour temperature (CCT), there are errors is big, colour rendering index CRI is low, based on above-mentioned
One, defect present in two, three is allowed to be inevitably present colour temperature error.
Seventh, the more color light mixing misalignments of R/G/B are big, more color light mixings refer to two or more color
Random color in mixed spectrum out, mainly influences LED light mixing color by above-mentioned one, two, three reasons.
The present invention researchs and proposes for the above technical problems.
[summary of the invention]
The invention overcomes the shortcomings of the above-mentioned technology and provides a kind of light source light spectrum self-correcting and self-test closed-loop controls
System and its control method, effectively improving illumination, there are the states of error.
To achieve the above object, present invention employs following technical proposals:
A kind of light source light spectrum self-correcting of the present invention and self-test closed-loop control system, include with calibration light source brightness
And/or the light source controller 1 of colour temperature, the light source controller 1 are connected with PERCOM peripheral communication component 2, for storing different stalls mark
The storage assembly 3 of quasi- four coloured light flux of red, green, blue and white and four color color temperature informations, four coloured light flux of feedback environment and four color colour temperatures letter
Ambient light sensor 4, output four colored lights pwm signal of gear and the pwm signal output interface for correcting four colored lights pwm signals of breath
5, the pwm signal output interface 5 is connected with LED light constant current driving assembly 6, the LED light constant current driving assembly 6 respectively with
Red LED lamp 7, green light LED lamp 8, blue LED lamp 9, white light LEDs lamp 10 connect, and the ambient light sensor 4, which is connected with, to be used for
The LED light acquisition optical module 11 of four colored lights is acquired, the PERCOM peripheral communication component 2 is connected with lamps and lanterns peripheral control unit 12.
A kind of light source light spectrum self-correcting and self-test closed-loop control system as described above, the lamps and lanterns peripheral control unit 12
It is equipped with control panel 13 and detects the peripheral control unit photodetector 14 of lamp brightness.
A kind of light source light spectrum self-correcting and self-test closed-loop control system as described above, the lamps and lanterns peripheral control unit 12
It is that wired or wireless communication is connect with PERCOM peripheral communication component 2.
A kind of light source light spectrum self-correcting and self-test closed-loop control system, the light source controller 1 are connected with as described above
LED light status display component 15.
The present invention also provides a kind of light source light spectrum self-correcting and self-test closed loop control methods, and its step are as follows:
S1: the four coloured light flux of red, green, blue and white and four color color temperature informations of different stalls standard are stored in storage assembly 3；
S2:LED light collection optical module 11 acquires red LED lamp 7, green light LED lamp 8, blue LED lamp 9, white LED lamp
10 LED lamplight, and be output on ambient light sensor 4；
S3: ambient light sensor 4 analyzes each LED light flux, colour temperature data and is converted into the spectroscopic data that can be read；
S4: light source controller 1 compares the storage spectrum number of the detection spectroscopic data and respective notch standard LED of each LED light
According to, the pwm signal mistake of the corresponding LED light of calculating, and compensate and correct；
S5: the pwm signal after correction is output to LED light constant current by pwm signal output interface 5 and driven by light source controller 1
In dynamic component 6, each LED light is driven to shine, repeats step S2.
Compared with prior art, the present invention has the advantage that
1, the present invention realize the more colors of R/G/B/W mix white light colour temperature CCT 2700K-10000K it is adjustable, colour rendering index
CRI (Ra) 93 or more, color saturation Re is up to 90 or more.
2, the present invention readable in real time, the lamps and lanterns peripheral control unit that realizes lamp light source brightness, color, colour temperature status data
All lamp brightness of same environment can be uniformly adjusted according to real time data, be consistent same environment lamp brightness.
3, the present invention solves LED aging light decay by light source light spectrum self-correcting and self-test closed-loop control and brightness occurs
Dimmed, the big problem of multiple color light mixing misalignment solves LED constant current and drives in itself ± 3-5% current error and temperature
Rising curent change influences colour temperature and light mixing misalignment problem, thus reduce consumer product research and development, buying, produce and sell at
This.
[Detailed description of the invention]
Fig. 1 is schematic structural view of the invention.
[specific embodiment]
It is described in further detail with reference to the accompanying drawing with embodiments of the present invention:
As shown in Figure 1, a kind of light source light spectrum self-correcting of the present invention and self-test closed-loop control system, include with school
The light source controller 1 of positive light-source brightness and/or colour temperature, the light source controller 1 are connected with PERCOM peripheral communication component 2, for storing
The storage assembly 3 of four coloured light flux of different stalls standard red, green, blue and white and four color color temperature informations, four coloured light flux of feedback environment and
Ambient light sensor 4, output four colored lights pwm signal of gear and the PWM letter for correcting four colored lights pwm signals of four color color temperature informations
Number output interface 5, the pwm signal output interface 5 are connected with LED light constant current driving assembly 6, the LED lamp constant current driving
Component 6 is connect with red LED lamp 7, green light LED lamp 8, blue LED lamp 9, white LED lamp 10 respectively, the ambient light sensor
4 are connected with the LED light collection optical module 11 for acquiring four colored lights, and the PERCOM peripheral communication component 2 is connected with outside lamps and lanterns
Controller 12.
When work, lamps and lanterns peripheral control unit 12 sends a gear control to light source controller 1 by PERCOM peripheral communication component 2
System instruction, 1 analytic operation data of light source controller simultaneously export default tetra- color of RGBW of respective notch by pwm signal output interface 5
The pwm signal of light, LED light constant current driving assembly 6 respectively drive red LED lamp 7, green according to each pwm signal of four coloured light of output
Light LED light 8, blue LED lamp 9, white LED lamp 10 realize that lamp light source shines, while LED light acquisition optical module 11 is adopted
Collect tetra- coloured light of RGBW, then the data such as LED modules with different colors luminous flux, color wavelength are analyzed by ambient light sensor 4 and are converted into
In the spectroscopic data feedback to light source controller 1 that can be read, light source controller 1 stores different stalls standard according to storage assembly 3
The LED light data that four coloured light flux of red, green, blue and white and four color color temperature informations detect ambient light sensor 4 compensate and correct,
And revised four colors pwm signal duty ratio is output to LED light constant current driving assembly 6 through pwm signal output interface 5, it drives
Dynamic tetra- color LED light of RGBW, before 1 receiving light peripheral control unit of light source controller, 12 next instruction, light source controller 1 is such as
This constantly repeats four coloured light PWM signal dutyfactors of correction in real time, allows lamp light source to export accurate brightness, to obtain standard
True white light colour temperature CCT and color.
Wherein, light source controller 1 can be STM32 series, STM8 series, PIC16F, PIC18F, PIC32 series, STC
Series, C8051f, domestic GD32, the new pool of TaiWan, China etc. have the single-chip microcontroller of multi-channel PWM output function；Ambient light sensing
The model of device 4 can for AS7225, AS7221, TCS3430, TCS3400, TCS3200, TCS34715, BH1749,
ISL29023, isl29125 etc..
A kind of light source light spectrum self-correcting of the present invention and self-test closed loop control method, steps are as follows:
S1: the four coloured light flux of red, green, blue and white and four color color temperature informations of different stalls standard are stored in storage assembly 3；
S2:LED light collection optical module 11 acquires red LED lamp 7, green light LED lamp 8, blue LED lamp 9, white LED lamp
10 LED lamplight, and be output on ambient light sensor 4；
S3: ambient light sensor 4 analyzes each LED light flux, colour temperature data and is converted into the spectroscopic data that can be read；
S4: light source controller 1 compares the storage spectrum number of the detection spectroscopic data and respective notch standard LED of each LED light
According to the pwm signal mistake of the corresponding LED light of calculating reduces duty ratio to the higher channel pwm signal of light-source brightness, light-source brightness is inclined
The method that low pass road pwm signal increases duty ratio compensates and corrects；
S5: the pwm signal after correction is output to LED light constant current by pwm signal output interface 5 and driven by light source controller 1
In dynamic component 6, each LED light is driven to shine, repeats step S2.
The lamps and lanterns peripheral control unit 12 is equipped with the external control of the control panel 13 for sending instruction and detection lamp brightness
Device photodetector 14 processed, so that lamps and lanterns peripheral control unit 12 can be read and all under same environment close with self-correcting and self-test
Ring controls the real-time luminosity state of lamps and lanterns, and analyzes each desk lamp brightness data, sends then to all lamps and lanterns minimum in environment
The maximum brightness data of bright light tool, so that the lamps and lanterns with self-correcting and self-test closed-loop control can analyze limitation maximum brightness,
Realize that the lamp brightness of the same model of same environment is consistent.
The lamps and lanterns peripheral control unit 12 is that wired or wireless communication is connect with PERCOM peripheral communication component 2, the light source control
Device 1 is connected with LED light status display component 15, real-time display LED light working condition.
The present invention effectively improves illumination condition, can be applied to eye-protecting desk lamp, medical lamp, video display lamp, stage lighting, open air
Headlamp, advertising lamp, Landscape Lamp, cosmetic mirror, direct broadcasting room lamp, Commercial lighting, household lamp, network intelligence illumination etc..
The description thereof is more specific and detailed for above embodiments, and is only present invention embodiment therein, but should not be understood
The present invention only has above embodiment, that is, should not be understood limitation of the above embodiment to invention patent protection range.It should refer to
Out, for those of ordinary skill in the art, without departing from the inventive concept of the premise, if can also make
Dry modification and improvement, these are all within the scope of protection of the present invention.
Claims (5)
1. a kind of light source light spectrum self-correcting and self-test closed-loop control system, it is characterised in that: include bright with calibration light source
The light source controller (1) of degree and/or colour temperature, the light source controller (1) are connected with PERCOM peripheral communication component (2), for storing not
With the storage assembly (3) of four coloured light flux of gear standard red, green, blue and white and four color color temperature informations, four coloured light flux of feedback environment and
Ambient light sensor (4), output four colored lights pwm signal of gear and the PWM letter for correcting four colored lights pwm signals of four color color temperature informations
Number output interface (5), the pwm signal output interface (5) are connected with LED light constant current driving assembly (6), the LED light constant current
Driving assembly (6) is connect with red LED lamp (7), green light LED lamp (8), blue LED lamp (9), white LED lamp (10) respectively, institute
It states the LED light that ambient light sensor (4) is connected with for acquiring four colored lights and acquires optical module (11), the PERCOM peripheral communication group
Part (2) is connected with lamps and lanterns peripheral control unit (12).
2. a kind of light source light spectrum self-correcting according to claim 1 and self-test closed-loop control system, it is characterised in that: institute
State the peripheral control unit photodetector (14) of lamps and lanterns peripheral control unit (12) equipped with control panel (13) and detection lamp brightness.
3. a kind of light source light spectrum self-correcting according to claim 1 and self-test closed-loop control system, it is characterised in that: institute
It is that wired or wireless communication is connect that lamps and lanterns peripheral control unit (12), which is stated, with PERCOM peripheral communication component (2).
4. a kind of light source light spectrum self-correcting according to claim 1 and self-test closed-loop control system, it is characterised in that: institute
It states light source controller (1) and is connected with LED light status display component (15).
5. a kind of light source light spectrum self-correcting and self-test closed loop control method, its step are as follows:
S1: the four coloured light flux of red, green, blue and white and four color color temperature informations of storage different stalls standard in storage assembly (3)；
S2:LED light collection optical module (11) acquires red LED lamp (7), green light LED lamp (8), blue LED lamp (9), white light
The LED lamplight of LED light (10), and be output on ambient light sensor (4)；
S3: ambient light sensor (4) analyzes each LED light flux, colour temperature data and is converted into the spectroscopic data that can be read；
S4: light source controller (1) compares the storage spectroscopic data of the detection spectroscopic data and respective notch standard LED of each LED light,
The pwm signal mistake of corresponding LED light is calculated, and is compensated and corrected；
S5: the pwm signal after correction is output to LED light constant current by pwm signal output interface (5) and driven by light source controller (1)
In dynamic component (6), each LED light is driven to shine, repeats step S2.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111080525A (en) * | 2019-12-19 | 2020-04-28 | 成都海擎科技有限公司 | Distributed image and primitive splicing method based on SIFT (Scale invariant feature transform) features |
| CN111511070A (en) * | 2020-05-09 | 2020-08-07 | 江苏复芯云物联科技有限公司 | L ED lighting system with color correction |
| CN112304575A (en) * | 2020-10-10 | 2021-02-02 | 广州市雅江光电设备有限公司 | Automatic testing system and method for built-in color and color temperature of color lamp |
| CN112804782A (en) * | 2021-01-27 | 2021-05-14 | 东莞康视达自动化科技有限公司 | Intelligent color temperature and illumination calibration light source illumination system and method |
| CN113847988A (en) * | 2021-09-27 | 2021-12-28 | 广州穿越千机创新科技有限公司 | Formation unmanned aerial vehicle light module self-detection system and method |
| CN113966030A (en) * | 2021-01-20 | 2022-01-21 | 深圳市耀嵘科技有限公司 | LED lamp dimming spectrum method |
| CN113973409A (en) * | 2021-01-20 | 2022-01-25 | 深圳市耀嵘科技有限公司 | LED lamp light modulation spectrum system |
| CN114364084A (en) * | 2022-03-17 | 2022-04-15 | 杭州雅观科技有限公司 | Cloud-based LED lighting energy-saving system and energy-saving method |
| CN115499968B (en) * | 2022-11-21 | 2023-03-24 | 四川世纪和光科技发展有限公司 | LED lamp with adjustable eye axis and use method thereof |
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| CN114364084A (en) * | 2022-03-17 | 2022-04-15 | 杭州雅观科技有限公司 | Cloud-based LED lighting energy-saving system and energy-saving method |
| CN114364084B (en) * | 2022-03-17 | 2022-06-10 | 杭州雅观科技有限公司 | Cloud-based LED illumination energy-saving system and energy-saving method |
| CN115499968B (en) * | 2022-11-21 | 2023-03-24 | 四川世纪和光科技发展有限公司 | LED lamp with adjustable eye axis and use method thereof |
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