摘要
利用嵌入式技术,设计了一款便携式红蓝光LED光疗仪。仪器采用STM32微处理器为主控芯片,选用红、蓝色LED实现最优LED光源阵列排布,并基于PT4115构建恒流驱动电流;利用STM32单片机输出的PWM信号分别控制红蓝光驱动芯片的输出电流,实现对仪器光照强度的线性调节;采用STem Win进行图形用户界面设计。实验结果表明:该仪器能够实现对光照强度的线性调节,在光照强度、光强分布和光照均匀性等方面均达到设计要求。
A portable red-blue light emitting diode phototherapy system is designed on embedded technology. The device takes the STM32 microprocessor as its central-controller, and red and blue narrow-band LED are used as the light source, driven by PT4115. The STM32 is used for PWM which could achieve continuously adjustable duty cycle to realize the linearly adjust light intensity, and the results can be displayed in screen based on STemWin. The testing results show that the device can realize the linearly adjust light intensity and satisfy the need for light intensity, distribution and uniformity.
出处
《天津职业技术师范大学学报》
2017年第2期18-21,共4页
Journal of Tianjin University of Technology and Education
基金
天津职业技术师范大学研究生创新基金项目(YC17-25)
天津职业技术师范大学校级基金项目(KYQD12012)
