基于多波段红光LED的低能量光疗系统设计  

Design of low-energy phototherapy system based on multi-band red light LED

作　　者：陈静[1,2] 王计平 郑奇[1,2] 王晓军 卞杰勇[3] 郭立泉[1,2] CHEN Jing;WANG Jiping;ZHENG Qi;WANG Xiaojun;BIAN Jieyong;GUO Liquan(School of Biomedical Engineering,University of Science and Technology of China,Hefei 230026,China;Suzhou Institute of Biomedical Engineering,Chinese Academy of Sciences,Suzhou 215011,China;Suzhou Xiangcheng People’s Hospital,Suzhou 215000,China)

机构地区：[1]中国科学技术大学生物医学工程学院,安徽合肥230026 [2]中国科学院苏州生物医学工程技术研究所,江苏苏州215011 [3]苏州市相城人民医院,江苏苏州215000

出　　处：《传感器与微系统》2020年第5期65-67,70,共4页Transducer and Microsystem Technologies

基　　金：苏州市科技计划项目(SS201608,SS201851)。

摘　　要：针对目前光疗技术中激光、强脉冲光等光源在安全方面存在的缺陷,提出了基于多波段红光发光二极管(LED)的低能量光疗方法。采用630,830,940 nm多个波段红光LED模组作为光源,以STM32微处理器为核心搭建了硬件控制系统,给出了具体电路设计和系统实现。通过波长选择,可实现不同深度皮肤和组织的光疗作用,并对光疗部位进行温度实时监测和报警。为了验证系统的性能,对系统光照强度及光斑均匀度进行了测试,结果表明:所设计的LED低能量光疗系统有效光功率密度达到75 mW/cm 2,光斑均匀度大于0.8。Aiming at the defect of safety of light source such as laser and intense pulsed light in current phototherapy technology,a low energy phototherapy method based on multi-band red light light-emitting diode(LED)is proposed.Multi-band red light LED module of 630,830,940 nm are used as light source.The hardware control system is built using STM32 microprocessor as the core,and the circuit design and system implementation are given.By choosing different wavelengths,phototherapy function of different depth skin and tissue can be realized.And realtime monitoring and alarm of temperature of phototherapy part can be achieved.Illumination intensity and spot evenness of system are test to verify property of system.The results show that effective photo power density of the designed low energy phototherapy based on LED can reach 75 mW/cm 2,and the evenness of spot is above 0.8.

关 键 词：多波段 发光二极管(LED) 光疗 低能量 

分 类 号：TN29[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]