Is proposed according to the environment changes, infrared light intensity in the realization of automatic switch, adjust brightness LED lighting design scheme of the system. For system control adopts single-chip microcomputer AT89C52 single core, designed by photocell and integrated amp composed of sensor, choose the light intensity heat-releasing infrared wireless sensor module as, also use LCD realized work information display. System in light of 2 170 lx strong can automatic shutoff, when light intensity is less than 1 can automatically open when enjoy the lx; When light is strong in 1 000 ~ 2 000 lx change, LED luminance can adjust to maintain environmental illumination basically stable.
The so-called "green lighting LED light source" fourth generation, has started gradually applied in the telecommunication, transportation, agriculture, medicine, military, etc. Leds (Light emitting Diode, - leds) is a solid semiconductor components, will be able to power directly into Light energy. As a solid lighting source, LED have long life, high photosynthetic efficiency, much light color features, can work under low voltage in safety, also can continuous switch flash is broken, can realize 0% ~ 100% dimmer.
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