Led Intelligent Lighting Drive And Control System Based On Single Chip Micro Computer

ABSTRACT: Light Emitting Diode, LED, is a device capable of converting electrical energy into visible light solid-state semiconductor devices. The lamps or lighting facilities that use the new light source, has advantages of long service life, saving the electrical energy.LED lamp, is composed of LED array, a driving circuit and a control circuit; and the drive circuit quality is directly related to LED lamp life and quality. Therefore the design of LED drive circuit is very important.The existing LED drive circuit has low power factor and low efficiency. Low power factor will produce harmonic pollution; low efficiency will reduce the electric energy utilization rate.To solve this problem, a high efficiency, high power factor LED driving circuit was designed in this thesis, that is a flyback switching power supply.In order to further save electric energy, and create a comfortable lighting atmosphere, in this paper, the use of single chip microcomputer development of the intelligent lighting control system, realizing automatic control of the LED lighting brightness.Finally, the thesis completed software and hardware implementation of the LED intelligent lighting drive and control system. And its function and performance parameters were tested and analyzed. Results show that the drive system and control system can meet the design requirements, the system runs well, power supply efficiency and power factor has the very high value.