A method and system for constant current control of LED detection light source
A constant current control and light source technology, applied in the use of semiconductor lamps, electrical components, etc., can solve the problems that LED detection light source cannot be tested by LED detection light source, lack of implementation, etc., and achieve the effect of stable equivalent luminous brightness
Active Publication Date: 2022-06-10
东莞锐视光电科技有限公司
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Problems solved by technology
However, due to the different specifications of LED LCD TVs, the LED light sources corresponding to the constant current boards involved are different. The existing power supply design schemes lack effective detection methods for different LED light sources, making different types of LED detection light sources It is impossible to test the LED detection light source based on the same switching power supply, so there is a lack of realization for the LED detection light source. How to realize the precise control of the system combined with the LED detection light source in constant current mode is a hot issue that needs to be solved urgently.
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[0043]The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0044] figure 1 A schematic structural diagram of an LED detection system in an embodiment of the present invention is shown. The LED detection system includes: a display module, a communication module, a main control module, a power management module, a switching power supply, an operational amplifier module, an LED detection light source, and a color temperature control module , wherein the display module is connected to the main con...
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The invention discloses a method and system for constant current control of an LED detection light source. The LED detection system includes: a display module, a communication module, a main control module, a power management module, a switching power supply, an operational amplifier module, and an LED detection light source . A color temperature control module, wherein the display module is connected to a main control module, and the main control module is connected to a coloring temperature control module, an operational amplifier module, a power management module, a display module, a communication module, and an output terminal of a switching power supply. The switching power supply inputs power to the LED detection light source, and the switching power supply is connected to the operational amplifier module. The implementation of the present invention can combine different LED detection light sources to trigger different light source instructions, thereby realizing precise control of the color temperature value of the LED light source by the system combined with the LED detection light source in constant current mode.
Description
technical field [0001] The invention relates to the technical field of light source detection, in particular to a method and system for constant current control of an LED detection light source. Background technique [0002] With the rapid development of LED (Light Emitting Diode, light-emitting diode) LCD TVs, LED LCD TVs have been popularized in thousands of households at present. Existing LED LCD TVs all adopt the design method of power board + constant current board, in which the power board is responsible for providing appropriate input voltage for the constant current board and TV main board, and the constant current board is responsible for providing constant current for the LED backlight module. The power board + constant current board are collectively referred to as switching power supply. When the TV is working, the switching power supply realizes constant voltage and constant current output, which not only meets the constant current demand of the LED backlight, b...
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IPC IPC(8): H05B45/345H05B45/50H05B45/20H05B45/325H05B45/355H05B45/3725
CPCH05B45/345H05B45/50H05B45/20H05B45/325H05B45/355H05B45/3725Y02B20/30
Inventor 王晶晶李旭森肖金荣黄勇何红华
Owner 东莞锐视光电科技有限公司