基于复眼透镜LED蓝绿光黄疸光疗系统的研究与设计

Research and Design of a Blue and Green Light Emitting Diode Phototherapy System Based on Fly Eye Lens for Jaundice

半导体发光二极管(LED)可应用于黄疸的治疗,其中LED蓝绿光照射患儿是全球公认最安全高效、经济便捷的方法。本研究在一种LED蓝绿光作为光源的黄疸光疗系统中利用复眼透镜阵列实现大面积均匀照明。基于AMC7150芯片构建恒流驱动模块,AT89C52单片机和LCD12864液晶显示屏构建人机交互模块。根据国家光疗设备安全专用要求YY0669-2008,设计并实现了光斑面积S=250mm×500mm、蓝光辐照度E蓝光≥2mW/cm2、绿光辐照度E绿光≥1.5mW/cm2、光均匀度≥90%的黄疸光疗系统。和传统光疗系统相比,这种新系统治疗效果更好,生物安全性更高,更易实现人机交互,更经济便捷。

Light emitting diode（LED）can be used in the treatment of jaundice.Blue and green LED irradiation affected with the newborn is currently considered the most effective treatment of the jaundice in the world.A jaundice phototherapy system with blue and green LED as light source utilizing fly eye lens array was built to achieve uniform illumination in the present study.AMC7150 chip was used to build the constant current drive module,and AT89C52 MCU and LCD12864 LCD screen were used to build the human-computer interaction module.Based on national particular phototherapy equipment requirements（YY0669-2008）for the safety,we designed and implemented a phototherapy system which spot area was 250mm×500mm,blue light irradiance reached 2mW/cm2,green light irradiance reached 1.5mW/cm2,and the uniformity of light was over 90%.Compared with the traditional system,the new one designed in this study has better therapeutic effect,higher biological safety,easier to achieve man-machine interaction,and more economical and convenient.