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.
作者
陈静
王计平
郑奇
王晓军
卞杰勇
郭立泉
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)
出处
《传感器与微系统》
CSCD
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)。
