为了进一步提高视力保护系统的功能和响应速度,设计了基于STM32F嵌入式视力保护仪。该设计采用模块化的设计方法,主控芯片采用STM32F103嵌入式处理器,包括超声波测距模块、光线感应模块、定时模块、声光报警模块、液晶显示模块。利用STM32处理器自带D/A转换功能将光敏电阻一端的电压信号转换成数字信号,光线过强或过暗,发出声光报警。利用超声波传感器测量距离,纠正坐姿。利用STM32处理器的定时器系统控制学习时间。进而起到保护视力的作用。 In order to further improve the functionality and response speed of the vision protection system, an embedded vision protection device based on STM32F was designed. The design uses a modular design method, the main control chip STM32F103 embedded processor, including ultrasonic ranging module, light sensing module, timing module, sound and light alarm module, liquid crystal display module. Use STM32 processor comes with D / A conversion function of the photoresistor voltage signal at one end into a digital signal, the light is too strong or too dark, audible and visual alarm. Use ultrasonic sensors to measure distance and correct sitting position. Using the STM32 processor’s timer system to control learning time. Then play the role of protecting eyesight.