Research Of Control System For LED Operation Shadowless Lamp

New LED operation shadowless lamp, have high uniformity and high illumination light color, no shadow degree good, adjustable color temperature, brightness is adjustable, a variety of lighting mode selection, operation simple, energy conservation, environmental protection and so on outstanding performance, is our country all levels of hospital operation shadowless lamp replacement of new products.This article first elaborates the research background and research significance, research status at home and abroad, summarizes the principle of LED and its volt-ampere characteristics, LED color temperature mixing principle;Introduced the subject development LED the overall structure of the operation shadowless lamp, LED lamp panel array type design, LED lamp bead, reflective cup, LED color temperature configuration analysis, etc; In LED operation shadowless lamp control system research, analyzed the functional requirements of the control system, control system structure, control system operation mode and control panel design, selection of microcontroller control system, the LED brightness control technology, the LED color temperature control technology, main and auxiliary light disc synchronous operation control technology, lamp plate focusing control technology, LED operation shadowless lamp power control technology and so on and their circuit design, and control system input button and state display interface circuit analysis and design, etc. In system software design, the software structure of control system analysis, design of the main program, interrupt service program design, and studies of synchronization communication protocol and program design, etc.This paper studies the PWM constant current LED brightness control circuit can be operated on the microcontroller failure lamp not go out, can guarantee the safety of the procedure, is a technical innovation. The project operation shadowless lamp has been developed for guizhou province registration production license issued by the food drug administration.