超声波智能感应防狼腰带 Original

This work is an ultrasonic intelligent induction anti wolf belt device, which mainly consists of an Arduino board, LED light, ultrasonic sensor, and buzzer. The interaction scenario is that if someone approaches you from behind, the ultrasonic sensor behind the belt will promptly sense and provide feedback. Finally, the buzzer will alarm to remind you that someone is approaching behind, and the LED light will turn on. You will have time to react and determine if you are in a dangerous environment.