Method and device for realizing automatic adjustment of LED (light-emitting diode) lamps

Abstract

The invention discloses a method for realizing automatic adjustment of LED (light-emitting diode) lamps. The method comprises the following steps of: sensing the peripheral light intensity information based on a light sensitive resistor; and adjusting the current passing through the LED lamps by modulating the duty ratio of PWM (pulse width modulation) by an adjustment potentiometer according to the light intensity information. The embodiment of the invention also discloses a device for realizing automatic adjustment of LED lamps. The device comprises a sensing module and a control module, wherein the sensing module is used for sensing the peripheral light intensity information based on the light sensitive resistor; and the control module is used for adjusting the current passing through the LED lamps by modulating the duty ratio of PWM by the adjustment potentiometer according to the light intensity information. The method and the device have the following advantages: the electric energy can be effectively saved by automatically dimming light according to the conditions of the surroundings, thus avoiding that desk lamps still emit light according to the same power under the condition that the light ray is brighter, ensuring fewer LEDs to emit heat and prolonging the service lives of the LEDs.

Description

technical field [0001] The invention relates to the technical field of automatic light adjustment, in particular to a method and device for automatically adjusting LED lights. Background technique [0002] LED lighting, also known as solid-state lighting, is the third-generation lighting technology after incandescent lamps and fluorescent lamps. It has the characteristics of energy saving, environmental protection, safety and reliability. Light source represents the future of lighting technology. The development of new solid-state lighting is not only a revolution in the field of lighting, but also meets the requirements of "building a resource-saving and environment-friendly society" put forward by the current government. The development of LED lighting is in line with the national industrial development strategy. The government attaches great importance to the development of the semiconductor lighting industry. The "Twelfth Five-Year Plan" has included LED projects as key...

AI Technical Summary

Problems solved by technology

[0007] In the actual application of LED table lamps, it is found that the LED lamps still emit light at the same power when the surrounding brightness is high, and will not change with changes in the surrounding light environment. This will not only waste electric energy, but also have a certain impact on vision.

At the same time, because there is a positive correlation between the heat generated by the LED and the current, the heat affects the life of the LED, so the life of the LED is also reduced under unnecessary brightness.

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