防近视视力保护器设计

北京理工大学珠海学院2020届本科生毕业设计Design of vision protector against MyopiaAbstractIn this paper,a New Vision Protector based on 89c52 mcu is designed.The eyeprotector uses 89c52 as the main core,and uses C language to program the software,in the hardware aspect,it uses the buzzer alarm module,the light detection module,the LCD display module,the ultrasonic ranging module and the timing function of thesingle chip microcomputer,including the power supply and the key module.Lightdetection module,the use of photosensitive resistor and AD acquisition module tocomplete the function.LCD display module,then use LCD1602 LCD to displayvarious parameters,such as distance,light intensity and time and so on.Ultrasonicranging module,then the use of ultrasonic mold and the principle of ultrasonicreflection to complete the function.When the learner begins to learn,the protectorwill time,measure distance and detect light.If there is a time-out,learning too closeor learning environment is too dark or too bright,the protector will send an alarm,somuch so that it protects your eyes.Keywords:Single-chip computer;Ultrasonic wave;Eye Protection;Lightdetection