The present invention relates to a safety device for a
personal mobility device, the safety device which is mounted on the
personal mobility device to generate different virtual sounds for each driving speed and which, when a collision occurs, notifies an emergency operation center
server of a collision situation so as to recognize the on-site situation. The safety device comprises: an acceleration detection unit (100) configured to detect acceleration of the
personal mobility device; an
ultrasonic detection unit (110) configured to detect, by using ultrasonic
waves, a distance from an obstacle in front of the personal mobility device; an
angular velocity detection unit (120) configured to detect the
angular velocity of the personal mobility device; a sound output unit (300) configured to output sound; and a
control unit (200) configured to receive acceleration detection data from the acceleration sensing unit and calculate a driving speed of the personal mobility device, receive
distance detection data from the
ultrasonic detection unit and calculate a distance from the front obstacle, output different virtual sounds for each driving speed by providing, to the sound output unit, a sound
reproduction signal corresponding to the driving speed, generate an alarm by providing an alarm
reproduction signal to the sound output unit when the distance from the front obstacle becomes less than or equal to a
set distance, determine whether the personal mobility device collides, on the basis of the acceleration detection data and
angular velocity detection data, and when a collision occurs, notify the emergency operation center
server (400) of the collision situation through a user terminal (M).