Design of vision protector based on 51 single chip microcomputer

   

introduction

Single chip microcomputer has been developing rapidly for many years , Its advantages are outstanding , High speed , low power consumption , Super low price , Super anti-interference , SCM has been used in many places in public life , For example, the mobile phone you usually use , The remote control and other electronic devices used when watching TV are used . SCM itself is a computer system integrated on a chip , Another name of single chip microcomputer is single chip microcontroller , On him ,CPU, Storage ROM and RAM,IO Port and internal clock , It can be said that although the sparrow is small, it has all five internal organs , It can let the single chip microcomputer complete all kinds of complex operations , Deal with a lot of data , It can provide good conditions for learning and development .

in addition , Ultrasonic ranging is becoming more and more important in daily life , It is used in many life scenes , Ultrasonic sensor is an ultrasonic signal device that changes other forms of signals into the required frequency , In reversing radar 、 Inspection of parking lot 、 Bridge construction 、 Liquid level detection 、 Robot automatic obstacle avoidance walking and other occasions have applications . Ultrasonic sensors are mainly divided into two categories &