| 摘要 |
PURPOSE: An ultrasonic wave stick is provided to deliver three-dimensional information through vibration and a buzzer. CONSTITUTION: An ultrasonic wave stick comprises: a vibrating motor and a buzzer speaker(a1); a signal transmitter and receiver(a2) which sets ultrasonic frequency band and angle with an optimal value in order to detect a distance required for a walk; a CPU part(a3) which processes desired information through the manipulation of a user; and a power supply unit(a4). |
