Method and system for carrying out constant current control on LED detection light source
A technology of constant current control and detection system, applied in the use of semiconductor lamps, electrical components, etc., can solve the problems of LED detection light source being unable to test LED detection light source, lack of realization, etc., and achieve the effect of stable equivalent luminous brightness
Active Publication Date: 2022-03-18
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 following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0044] figure 1 A schematic structural diagram of the LED detection system in the embodiment of the present invention is shown, and 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 control module, and the mai...
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The invention discloses a method and system for carrying out constant current control on an LED detection light source, the LED detection system comprises a display module, a communication module, a main control module, a power management module, a switching power supply, an operational amplifier module, the LED detection light source and a color temperature control module, the display module is connected with the main control module, and the communication module is connected with the main control module. The main control module is connected with the color temperature control module, the operational amplifier module, the power management module, the display module, the communication module and the output end of the switching power supply, the switching power supply inputs power to the LED detection light source, and the switching power supply is connected with the operational amplifier module. According to the invention, different LED detection light sources can be combined to trigger different light source instructions, so that the system is combined with the LED detection light sources to accurately control the color temperature value of the LED light sources in a 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) liquid crystal televisions, currently, LED liquid crystal televisions have been popularized in thousands of households. Existing LED LCD TVs adopt the design method of power board + constant current board, in which the power board is responsible for providing suitable 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 needs to meet the constant...
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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