CN112449460A - RGBW four-color LED light calibration method - Google Patents
RGBW four-color LED light calibration method Download PDFInfo
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- CN112449460A CN112449460A CN202011252593.2A CN202011252593A CN112449460A CN 112449460 A CN112449460 A CN 112449460A CN 202011252593 A CN202011252593 A CN 202011252593A CN 112449460 A CN112449460 A CN 112449460A
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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]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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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
- H05B45/22—Controlling the colour of the light using optical feedback
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention relates to an RGBW four-color LED light calibration method which comprises a control module, a light driving module, an LED lamp array RGBW light source and a light driving module power supply, and comprises light testing equipment, wherein the RGBW four-color LED light calibration method comprises the following steps: the control module outputs a corresponding PWM duty ratio according to the set RGB value; the light driving module outputs current for driving the LED array; the LED module is lightened; the lighting test equipment tests the x and y values of the LED array; calculating corresponding RGB values; the control module compares the output RGB value with the RGB value fed back by the testing equipment, the LED array is adjusted to the set color, the RGB value and the color are recorded, and the color calibration process is completed. The RGBW four-color LED light calibration method provided by the invention realizes automatic calibration of the RGBW four-color LED color, realizes the observed effect, has a simple structure, is convenient to operate, ensures the consistency of the display effect and the preset display effect, improves the production efficiency, reduces the production cost and ensures the product quality.
Description
Technical Field
The invention relates to an LED light control method, in particular to an RGBW four-color LED light calibration method.
Background
The unmanned aerial vehicle formation performance belongs to emerging trade, utilizes the combination of unmanned aerial vehicle and LED light, can present different pictures in the air, brings a vision feast for people.
At present, there is following problem in the four-color LED in unmanned aerial vehicle performance field, and LED has great difference with predetermineeing display effect in aerial actual display effect big, and has the inconsistent scheduling problem of display effect. Meanwhile, the traditional LED calibration method is too complex, so that the problems of low efficiency and high production cost in the actual production process are caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the RGBW four-color LED light calibration method which can improve the production efficiency, reduce the production cost and ensure the product quality.
The technical scheme adopted by the invention is as follows:
an RGBW four-color LED light calibration method,
the system comprises a control module, a light driving module, an LED lamp array RGBW light source and a light driving module power supply, and comprises light testing equipment, wherein the RGBW four-color LED light calibration steps are as follows:
step 1, a control module outputs a corresponding PWM duty ratio according to a set RGB value;
step 2, outputting current for driving the LED array by the light driving module according to the instruction of the control module;
step 3, lighting the LED module;
step 4, testing the x and y values of the LED array by lamplight testing equipment; calculating corresponding RGB values;
step 5, the control module receives the RGB value output by the light test equipment;
step 6, the control module compares the output RGB value with the RGB value fed back by the test equipment, judges whether the difference value between the output RGB value and the RGB value exceeds a set value or not, if so, the step 2 is executed, and if not, the step 7 is executed;
step 7, adjusting the LED array to a set color, recording the RGB value and the color at the moment, and completing the calibration process of one color;
and 8, ending.
The light test equipment is a spectrometer.
The light driving module receives the PWM signal of the control module, outputs 4-channel current and controls the LED lamp array, and the voltage of the module output current and the duty ratio of the input PWM signal are in a linear relation: namely, it is
D＝K×Iout
D is a PWM duty ratio; a K coefficient; iout lamp driving module outputs current.
The LED lamp array RGBW light source is a four-color LED array, and is connected in series or in parallel.
The test environment is in a closed, dark environment. The real reliability of the data acquired by the detection equipment is ensured, and the influence of other light sources on the test result can be avoided.
Compared with the prior art, the invention has the beneficial effects that:
the RGBW four-color LED light calibration method provided by the invention realizes automatic calibration of RGBW four-color LED colors, solves the problems of large color difference of lamp beads and complex calibration process, realizes the effect obtained by looking, has a simple structure, is convenient to operate, ensures the consistency of the display effect and the preset display effect, improves the production efficiency, reduces the production cost and ensures the product quality.
Drawings
FIG. 1 is a schematic diagram of a calibration method of RGBW four-color LED lamp light;
FIG. 2 is a schematic diagram of device calibration of the RGBW four-color LED lamp light calibration method.
Detailed Description
The invention is described in detail below with reference to the figures and examples:
as can be seen from the attached figures 1-2, the RGBW four-color LED light calibration method,
the system comprises a control module, a light driving module, an LED lamp array RGBW light source and a light driving module power supply, and comprises light testing equipment, wherein the RGBW four-color LED light calibration steps are as follows:
step 1, a control module outputs a corresponding PWM duty ratio according to a set RGB value;
step 2, outputting current for driving the LED array by the light driving module according to the instruction of the control module;
step 3, lighting the LED module;
step 4, testing the x and y values of the LED array by lamplight testing equipment; calculating corresponding RGB values;
step 5, the control module receives the RGB value output by the light test equipment;
step 6, the control module compares the output RGB value with the RGB value fed back by the test equipment, judges whether the difference value between the output RGB value and the RGB value exceeds a set value or not, if so, the step 2 is executed, and if not, the step 7 is executed;
step 7, adjusting the LED array to a set color, recording the RGB value and the color at the moment, and completing the calibration process of one color;
and 8, ending.
The light test equipment is a spectrometer.
The light driving module receives the PWM signal of the control module, outputs 4-channel current and controls the LED lamp array, and the voltage of the module output current and the duty ratio of the input PWM signal are in a linear relation: namely, it is
D＝K×Iout
D is a PWM duty ratio; a K coefficient; iout lamp driving module outputs current.
The LED lamp array RGBW light source is a four-color LED array, and is connected in series or in parallel.
The test environment is in a closed, dark environment. The real reliability of the data acquired by the detection equipment is ensured, and the influence of other light sources on the test result can be avoided.
The RGBW four-color LED light calibration method provided by the invention realizes automatic calibration of RGBW four-color LED colors, solves the problems of large color difference of lamp beads and complex calibration process, realizes the effect obtained by looking, has a simple structure, is convenient to operate, ensures the consistency of the display effect and the preset display effect, improves the production efficiency, reduces the production cost and ensures the product quality.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (5)
1. An RGBW four-color LED light calibration method,
the LED lamp array comprises a control module, a light driving module, an LED lamp array RGBW light source and a light driving module power supply, and is characterized in that: the method comprises a light test device, and the RGBW four-color LED light calibration steps are as follows:
step 1, a control module outputs a corresponding PWM duty ratio according to a set RGB value;
step 2, outputting current for driving the LED array by the light driving module according to the instruction of the control module;
step 3, lighting the LED module;
step 4, testing the x and y values of the LED array by lamplight testing equipment; calculating corresponding RGB values;
step 5, the control module receives the RGB value output by the light test equipment;
step 6, the control module compares the output RGB value with the RGB value fed back by the test equipment, judges whether the difference value between the output RGB value and the RGB value exceeds a set value or not, if so, the step 2 is executed, and if not, the step 7 is executed;
step 7, adjusting the LED array to a set color, recording the RGB value and the color at the moment, and completing the calibration process of one color;
and 8, ending.
2. The RGBW four-color LED lamp calibration method of claim 1, wherein:
the light test equipment is a spectrometer.
3. The RGBW four-color LED lamp calibration method of claim 1, wherein:
the light driving module receives the PWM signal of the control module, outputs 4-channel current and controls the LED lamp array, and the voltage of the module output current and the duty ratio of the input PWM signal are in a linear relation: namely, it is
D＝K×Iout
D is a PWM duty ratio; a K coefficient; iout lamp driving module outputs current.
4. The RGBW four-color LED lamp calibration method of claim 1, wherein:
the LED lamp array RGBW light source is a four-color LED array, and is connected in series or in parallel.
5. The RGBW four-color LED lamp calibration method of claim 1, wherein:
the test environment is in a closed, dark environment.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113626334A (en) * | 2021-08-23 | 2021-11-09 | 一飞(海南)科技有限公司 | Method, system, medium, terminal and unmanned aerial vehicle for testing airplane functions |
| 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 |
| CN115066053A (en) * | 2022-06-15 | 2022-09-16 | 歌尔科技有限公司 | Lamp effect calibration method, control method and device of LED lamp module and electronic equipment |
| CN118019167A (en) * | 2024-03-27 | 2024-05-10 | 广东博朗灯光音响科技有限公司 | Control method and control system for RGBW four-color stage lamp |
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- 2020-11-11 CN CN202011252593.2A patent/CN112449460A/en active Pending
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| CN1460393A (en) * | 2001-03-29 | 2003-12-03 | 皇家菲利浦电子有限公司 | System for RGB based LED luminary |
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| 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 |
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